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Having multiple connected bodies

Subclass of:

623 - Prosthesis (i.e., artificial body members), parts thereof, or aids and accessories therefor

623100100 - ARTERIAL PROSTHESIS (I.E., BLOOD VESSEL)

623100150 - Stent structure

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Entries
DocumentTitleDate
20100121430Helical Stent Design - An expandable tubular reinforcing member used for body lumens such as blood vessels, the reinforcing member being formed of a continuous elongated helical element comprised of spaced undulating portions forming end loop portions and including a plurality of curvilinear connector elements extending between and interconnecting at least some of the adjacent undulating portions of the helical element over its length.05-13-2010
20100161034STENTS WITH ATTACHED LOOPED ENDS - An open frame prosthesis is formed with looped end terminations at its proximal and distal ends. At one end of the prosthesis, the filaments or strands are welded together in pairs to form strand couplings. A plurality of loop segments are connected to the strand couplings, one loop segment for each pair of adjacent strand couplings. In one version of the prosthesis, strands at the opposite end are bent to form looped ends. In another version, loop segments are connected to pairs of strand couplings at both ends of the prosthesis. The loop segments can be connected to the couplings by welding, fusion bonds, or tubes, which are either crimped or heat shrunk.06-24-2010
20120172973SELF-EXPANDING OCCLUSION DEVICE - An occlusion device for implantation within a body lumen includes a distal end, a proximal end, and an expandable member extending from the distal end to the proximal end. The expandable tubular member defines a passageway extending from the distal end to the proximal end. The expandable tubular member includes a plurality of struts that are joined to adjacent struts to form a plurality of closed shapes each defining a closed path. The plurality of struts are joined to form a plurality of fixed joints so that adjacent struts are pivotable around respective one of the fixed joints when an external force is applied to the expandable tubular member. The tubular member defines an ellipsoid shape.07-05-2012
20120172972Multi Stage Opening Stent Designs - In at least one embodiment, a stent comprises an unexpanded configuration, a nominally expanded configuration, and a fully expanded configuration. The stent further comprises a plurality of circumferential bands and a plurality of connectors connecting adjacent circumferential bands to one another. Each circumferential band has a plurality of struts interconnected by bridges. Adjacent struts form strut pairs and are connected to one another at a first end or a second end but not both. Each strut pair defines an opening between the struts of the strut pair; the bridges extend into the openings. In the unexpanded configuration, the struts are straight along their length. Also in the unexpanded configuration, the bridges comprise two adjacent straight segments that are connected by a u-shaped segment, and the straight segments are parallel to one another and to the longitudinal axis of the stent.07-05-2012
20100137974Stent with Graduated Stiffness - Disclosed herein is a stent having a generally tubular stent body with a first end region, a second end region, and a third region therebetween. The stent has a plurality of circumferential serpentine bands and a plurality of connector columns. Each connector column is located between two immediately adjacent serpentine bands, with each connector column having at least one connector. Connectors are connected at one end to one serpentine band and at the other end to an immediately adjacent serpentine band. The connectors of the first and second end regions have a first length which is substantially parallel to the longitudinal axis, and the connectors of the third region have a length greater than the first length and form an oblique angle relative to the longitudinal axis.06-03-2010
20100152836Intraluminar perforated radially expandable drug delivery prosthesis and a method for the production thereof - A radially expandable prosthesis for implantation in a lumen comprises a tubular wall having an inner surface and an outer surface. The tubular wall is provided with cuts to form solid struts which have a thickness and which enables the prosthesis to expand. The solid struts have reservoirs made therethrough in the form of perforating holes for containing a therapeutic agent. The perforating holes each have an inner opening and an outer opening of substantially the same size. The prosthesis, including said perforating holes, has a smooth electrochemically polished surface.06-17-2010
20090192589INTRAVASCULAR STENT - The invention is directed to an expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The invention provides for an intravascular stent having a plurality of cylindrical rings connected by undulating links. The stent has a high degree of flexibility in the longitudinal direction, yet has adequate vessel wall coverage and radial strength sufficient to hold open an artery or other body lumen. The stent can be compressed or crimped onto a catheter to a very low profile since the peaks that are adjacent the curved portion of the undulating link are shorter than other peaks in the same cylindrical ring to prevent overlap yet still achieve a very low profile, tightly crimped stent onto a catheter.07-30-2009
20120179240STENT/FIBER STRUCTURAL COMBINATIONS - A plurality of endoluminal segments axially connected by fiber bridges is disclosed. The endoluminal segments may be superelastic nitinol that is balloon-expandable or self-expanding. The intraluminal segments may possess a textured surface or at least one geometric feature per segment, located at the apex of a strut pair comprising the intraluminal segment, serving as an anchoring point for the fiber bridges. These geometric features may transmit axially compressive loads during deployment from a device such as a catheter, and may be capable of interlocking the endoluminal segments when constrained within a device such as a catheter. The fibers comprising the bridges may be polymeric, silk, collagen, bioabsorbable, or a blend thereof. The fiber network comprising the bridges may be regularly oriented, randomly oriented, localized, or continuous. The intraluminal segments and fiber bridges may be individually impregnated with therapeutic material, or may both be impregnated with therapeutic material.07-12-2012
20120179238STENT HAVING VARIABLE STIFFNESS - A plurality of radially expandable cylindrical elements are generally aligned along a common longitudinal axis and are interconnected by a plurality of interconnecting members placed so that the stent is flexible in the longitudinal direction. The plurality of cylindrical elements collectively form first and second stent ends longitudinally separated by a stent body. At least one of the first and second stent ends is reverse-tapered laterally outward from the longitudinal axis and longitudinally away from the stent body. The stent body has a stiffness value of X, and at least one of the first and second stent ends has a stiffness value of Z, with Z being greater than07-12-2012
20100114297STENT - A stent has a tubular flexible body with a wall formed of a web structure: The web structure has a plurality of neighboring web patterns which include webs arranged side by side. The web patterns are interconnected via at least one connection element. To prevent the connection element from moving out of the plane of the wall during expansion, the connection elements are each provided with connection webs arranged at an angle relative to one another and interconnected via hinges.05-06-2010
20120245676STENT DESIGNS FOR USE WITH ONE OR MORE TRIGGER WIRES - The present embodiments provide a stent for use in a medical procedure that comprises a series of proximal apices disposed at a proximal end of the stent and a series of distal apices disposed at a distal end of the stent. In a first embodiment, a first proximal apex comprises a bore for receiving a trigger wire, and a second proximal apex, disposed adjacent to the first proximal apex, comprises at least one barb. In an alternative embodiment, a first proximal apex comprises a first bore and a second, adjacent proximal apex comprises a second bore, such that a single trigger wire may be disposed through the first and second bores to restrain the first and second proximal apices during delivery.09-27-2012
20120245674VASCULAR REMODELING DEVICE - A vascular remodeling device is provided. The device includes an anchor portion, sized for deployment in a blood vessel, that is radially expandable from a collapsed state to an expanded state. The device also includes a distal portion that is sized for deployment in a blood vessel. The distal portion is radially expandable from a collapsed state to an expanded state and, in some embodiments, has a distal face that is sufficiently occlusive in the distal-to-proximal direction to perform a therapeutic blocking function at an aneurysm. Some embodiments have an intermediate portion that connects a distal end of the anchor portion and a proximal end of the distal portion, and in some embodiments, the anchor portion and distal portion are able to pivot relative to each other at or near the intermediate portion.09-27-2012
20130030517STENT GRAFT DEVICE - A stent graft device for implanting in a body lumen, comprising a stent with non-staggered or staggered apexes, said stent comprising a plurality of stent sections, bendable connecting members forming said non-staggered or staggered apexes and connecting each of said stent sections to other stent sections to form a zigzag pattern, wherein said stent is staggerdly sutured to a graft by a plurality of suture knots, and wherein said suture knots and staggered apexes are staggered when said stent sections are crimped, and methods of use thereof.01-31-2013
20130079866STENT GEOMETRY - A stent structure is provided with an alternating arrangement of hoop cells and flex cells. Longitudinal struts extend through the hoop cells but do not extend through the flex cells. The flex struts in the flex cells are wider than the hoop struts in the hoop cells.03-28-2013
20130035753Multiple Scaffold Design And Coating Thereof - A multiple stent structure including a plurality of stent bodies arranged end to end in which adjacent stent bodies of the structure are connected by a severable connecting portion disposed between the adjacent stent bodies is disclosed. A method of coating a plurality of stents including depositing a coating on the multiple stent structure and severing the severable connecting portions to disconnect the plurality of stent bodies is disclosed.02-07-2013
20130035754DRUG-DELIVERY ENDOVASCULAR STENT AND METHOD OF FORMING THE SAME - An intravascular stent and method for inhibiting restenosis, following vascular injury, is disclosed. The stent has an expandable, linked-filament body and a drug-release coating formed on the stent-body filaments, for contacting the vessel injury site when the stent is placed in-situ in an expanded condition. The coating releases, for a period of at least 4 weeks, a restenosis-inhibiting amount of a monocyclic triene immunosuppressive compound having an alkyl group substituent at carbon position 40 in the compound. The stent, when used to treat a vascular injury, gives good protection against clinical restenosis, even when the extent of vascular injury involves vessel overstretching by more than 30% diameter. Also disclosed is a stent having a drug-release coating composed of (i) 10 and 60 weight percent poly-dl-Iactide polymer substrate and (ii) 40-90 weight percent of an anti-restenosis compound, and a polymer undercoat having a thickness of between 1-5 microns.02-07-2013
20120185035FLEXIBLE AND EXPANDABLE STENT - In one embodiment of the invention, a stent may be provided comprising a first undulating band having alternating peaks and troughs, a second undulating band having alternating peaks and troughs, a first substantially longitudinal connector extending between the first and second undulating bands and a second very short connector extending between the first and second undulating bands, the first connector substantially longer than the second very short connector.07-19-2012
20090306766STENT WITH A BIO-RESORBABLE CONNECTOR AND METHODS - A helical stent having bioresorbable connecting members connecting sections of the stent. The connecting members provide various spring rates or spring constants to the stent, and permit a change in the flexibility of the stent subsequent to implantation while maintaining the unitary design of the stent. A method of making the helical stent includes forming a tube with a section made of a bioresorbable material prior to forming the stent.12-10-2009
20110270384Polymeric Stents and Method of Manufacturing Same - A pattern is used to form a stent scaffold from a polymeric precursor tube having a particular outer diameter. A new pattern can be derived from a base pattern, wherein the new pattern can be used to form a stent scaffold from a precursor tube having an outer diameter OD11-03-2011
20110015721Intraluminal Stent - An intraluminal stent made of a zig-zag or sinusoidal member defining a successive series of struts connected by apex sections and formed into a series of axially displaced hoop members wherein at least one of the hoop members has at least 5 one strut connected to a strut of an adjacent hoop. The connected struts may be connected by spot welding, continuous welding, or suturing, for example, or by a bridging member connected to each strut, and may be spaced along the length of the stent in a pattern to form a connective spine. The number of zigs of the zig-zag member in each hoop member may be varied, as can the zig length. A plurality of 10 connective spines may also be included.01-20-2011
20130060321MULTIPLE INDEPENDENT NESTED STENT STRUCTURES AND METHODS FOR THEIR PREPARATION AND DEPLOYMENT - Blood vessels and other body lumens are stented using stent structures comprising a plurality of radially expansible rings where at least some of the rings comprise axially extending elements which interleave with axially extending elements on adjacent unconnected rings. The ring structures may be open cell structures or closed cell structures, and the axially extending elements will typically be formed as part of the open cell or closed cell structure.03-07-2013
20130060322EXPANDABLE FRAMEWORK WITH OVERLAPPING CONNECTORS - A stent may comprise a plurality of serpentine bands and connectors. A first connector may overlap a second connector when the stent is unexpanded. The first connector may also overlap the second connector in an unexpanded state when the stent is subject to compressive forces in the local area of the connectors, such as when the connectors are located on the inside of a curve. The second connector may be shaped according to a rotation of the first connector about the centroid of the cell between the first connector and the second connector.03-07-2013
20090069882Endoluminal Prosthesis - An endoluminal prosthesis comprises a tubular body which can be expanded about a longitudinal axis. A plurality of serpentines extend in a substantially circumferential direction. Each comprises arm portions and bend portions which join two subsequent arms. The bends facing an adjacent serpentine are circumferentially offset relative to the respective opposite bends of the contiguous serpentine, both when the prosthesis is collapsed and when the prosthesis is expanded. A first portion comprises at least two adjacent serpentines interconnected by at least one bridge, and at least two bends situated at the shortest longitudinal distance between the two serpentines is not connected by a bridge. A second portion comprises at least two adjacent serpentines interconnected by a number of bridges equal to the number of pairs of bends of the two serpentines, at the shortest longitudinal distance between the two serpentines.03-12-2009
20120226346Low Strain High Strength Stent - In at least one embodiment, a stent comprises an expandable framework comprising a plurality of serpentine bands and a plurality of connector struts. Each serpentine band comprises a plurality of alternating struts and turns. A plurality of the serpentine bands each have their proximal turns aligned on a common stent circumference and comprise first distal turns and second distal turns. The first distal turns are aligned with one another on a common stent circumference. The second distal turns aligned with one another on another common stent circumference. Each band in the plurality comprises first struts and second struts. Each first strut is attached between a proximal turn and a first distal turn, and each second strut is attached between a proximal turn and a second distal turn. The second struts are wider than said first struts.09-06-2012
20110022156LONGITUDINALLY FLEXIBLE STENT - An intravascular stent especially suited for implanting in curved arterial portions. The stent retains longitudinal flexibility after expansion. The stent is formed of intertwined meander patterns forming triangular cells. The triangular cells are adapted to provide radial support, and also to provide longitudinal flexibility after expansion. The triangular cells provide increased coverage of a vessel wall. The stent can have different portions adapted to optimize radial support or to optimize longitudinal flexibility. Loops in the stent are disposed and adapted to cooperate so that after expansion of said stent within a curved lumen, the stent is curved and cells on the outside of the curve open in length, but narrow in width whereas cells on the inside of the curve shorten in length but thicken in width to maintain a density of stent element area which much more constant than otherwise between the inside and the outside of the curve. As a result, when the stent is coated with a medicine the more constant density of stent elements results in an even dose being applied to the inside wall of the lumen, avoiding the possibility that a toxic dose be supplied at one area while a less than effective dose is applied to another area.01-27-2011
20090248136MEDICAL SUPPORTING IMPLANT, IN PARTICULAR STENT - A medical supporting implant, in particular a stent, comprises a tubular base body which is made up of bendable struts (10-01-2009
20090012599Biodegradable Connectors - An expandable bifurcated stent is formed of a main body and a first branch. The body wall is made up of interconnected stent members that define a plurality of cells, at least one of which is a side opening. The first branch body extends from the body wall from at least two regions adjacent the side opening. At least one stent member adjacent the perimeter is bioabsorbable.01-08-2009
20110034992Stent and Method of Coating Same - Coating a stent may include continuously rotating the stent in one direction while spraying a first coating layer followed by continuously rotating the stent in another direction while spraying a second coating layer, wherein the first layer is preferentially distributed over a side surface of the stent struts and the second layer is preferentially distributed over an opposite side surface of the stent struts. The overall coating distribution combining both layers may be evenly distributed over the two side surfaces of the stent struts.02-10-2011
20110282434AXIALLY-RADIALLY NESTED EXPANDABLE DEVICE - Expandable medical implants for maintaining support of a body lumen are disclosed. These implants comprise an axially-radially nested, diametrically expandable, moveable vascular device for enlarging an occluded portion of a vessel. The device can be configured to allow for motion such as translating and/or slide and lock. One advantage of the axially-radially nested stent is that it maintains the expanded size, without significant recoil.11-17-2011
20110282435Longitudinally Flexible Expandable Stent - Segmented articulatable stent of open structure comprised of end-connected struts of first and second lengths making up first and second segments with angular interconnects between adjacent first and second segments.11-17-2011
20110282433Stent Design Allowing Extended Release of Drug and/or Enhanced Adhesion of Polymer to OD Surface - The invention is directed to mechanisms and methods that reduce the delamination of a therapeutic agent from a stent. The mechanisms include holes (channels, wells, and other hole configurations), protrusions, sintered metal cores, clamps/staples, pins, and stainless steel shields.11-17-2011
20100268325MEDICAL DEVICES AND METHODS OF MAKING THE SAME - Medical devices, such as endoprostheses, and methods of making the devices are disclosed. In some embodiments, an endoprosthesis includes a first portion having a first width, and a second portion having a second width different than the first width, wherein the first and second portions have different grain sizes.10-21-2010
20090149943FLEXIBLE STENT - This invention involves a radially expandable stent that has wire wound circular sections that are cojoined to create a cylinder by a series of single strand wire hinges. The hinges are situated to provide the stent created by the expanded sections with enhanced flexibility without sacrificing the overall support strength of the stent.06-11-2009
20090248135Eversible Branch Stent-Graft and Deployment Method - A method of deploying an eversible branch stent-graft includes deploying the eversible branch stent-graft into a main vessel such that a collateral opening in a main stent-graft of the eversible branch stent-graft is aligned with an ostium of a branch vessel emanating from the main vessel. A branch stent ring suture threaded though outer exposed crowns of an outer stent ring of the branch stent-graft is grasped and pulled through the collateral opening to evert the branch stent-graft into the branch vessel as a branch anchor suture is removed to release a protruding end of a branch stent-graft from a proximal end of the main stent-graft.10-01-2009
20100010622HYBRID SEGMENTED ENDOPROSTHESIS - Generally, the present disclosure includes a hybrid segmented endoprosthesis for delivery into a lumen of a body. The hybrid segmented endoprosthesis has different types of segments that are joined together. The segments are typically distinct and distinguishable from each other by each segment having a unique configuration different from at least one other segment. Additionally, the segments can be coupled together by various processes well known for interconnecting the materials of endoprostheses. The segmented endoprosthesis can provide improved deliverability, strength, flexibility, and/or functionality during and after deployment. The use of a segmented endoprosthesis can combine the configurations of multiple small endoprostheses into a standard- or regular-sized endoprosthesis.01-14-2010
20110166643Stent - A stent shaped as a three-dimensional body which is formed by interlaced threads (07-07-2011
20110288632REPOSITIONABLE ENDOLUMINAL SUPPORT STRUCTURE AND ITS APPLICATIONS - An endo luminal support structure (11-24-2011
20110288633STENT WITH DUAL SUPPORT STRUCTURE - A intraluminal stent comprises a reticulated tube having an un-deployed diameter and expandable to an enlarged diameter. The tube includes a structural beam extending between first and second ends. The structural beam changes from a first geometry to a second geometry when the tube changes from the un-deployed diameter to the enlarged diameter. The structural beam includes first and second longitudinal elements each extending at least partially between the first and second ends and with a spacing between the first and second elements. Each of said first and second elements changes from the first geometry to the second geometry when the tube changes from the un-deployed diameter to the enlarged diameter for the spacing to remain substantially unchanged as the tube changes from the un-deployed diameter to the enlarged diameter.11-24-2011
20110288631Preventing Vascular Stenosis of Cardiovascular Stent - A novel cardiovascular stent for preventing vascular stenosis is disclosed. The basic components of the cardiovascular stent of the present invention include V-shape rib unit, multi-link unit and connective ring unit. In addition, each ring rib part is formed by a plurality of double V-shape rib units that are connected together via the bridging portions of the multi-link units. Also, each connective part comprises a plurality of connective ring units. The integrally formed stent of the present invention is formed with the ring rib parts that are connected together by the connective parts.11-24-2011
20110295360STENT - A stent includes a plurality of wavy annular bodies each formed in an annular shape from a wavy linear member, and a connection part provided between the adjacent wavy annular bodies, interconnecting the adjacent wavy annular bodies coaxially, weaker than the wavy annular bodies and rupturable. The connection part extends in a slanting manner relative to an axial direction in which the wavy annular bodies are aligned, and interconnects that one inflexed part of one wavy annular body which is curved in a shape projected toward the other wavy annular body adjacent to the one wavy annular body and that the other inflexed part of the other wavy annular body which is curved in a shape projected toward the one wavy annular body.12-01-2011
20100217380FLEXIBLE STENT DESIGN - The present invention relates to tissue-supporting medical devices and drug delivery systems, and more particularly to tubular flexible stents that are implanted within a body lumen of a living animal or human to support the organ, maintain patency and/or deliver drugs or agents. The tubular flexible stent has a cylindrical shape defining a longitudinal axis and includes a helical section having of a plurality of longitudinally oriented strut members and a plurality of circumferentially oriented hinge members connecting circumferentially adjacent strut members to form a band. The band is wrapped about the longitudinal axis in a substantially helical manner to form a plurality of helical windings. At least one connector member extends between longitudinally adjacent helical windings of the band.08-26-2010
20100211162Stent - A stent shaped as a three-dimensional body which is formed by interlaced threads (08-19-2010
20080319529Stent With Improved Mechanical Properties - A stent includes a central portion having a first waveform. The first waveform is wrapped around a longitudinal axis of the stent at a pitch to define a plurality of helical turns. The stent also includes an end segment connected to one end of the central portion. The end segment has a second waveform that includes a plurality of struts and a plurality of crowns. Each of the plurality of struts has a different length so that peaks of the crowns that define an end of the stent lie within a plane that is substantially perpendicular to the longitudinal axis. Cross-sectional areas of the struts having different lengths vary so that the struts move substantially uniformly during radial contraction and/or radial expansion of the stent.12-25-2008
20100010619Closed-Cell Flexible Stent Hybrid - A stent has a first stent body and a second stent body. The first stent body is a rolled stent having a first end and a second end and the second stent body is a tubular stent. The stent has a deployed state, the stent being within a body lumen in the deployed state. The second stent body at least partially disposed within the first stent body when the stent is in the deployed state so that the first end of the first stent body overlaps the second end of the first stent body for a first overlap length.01-14-2010
20080294241STENT HAVING HELICAL ELEMENTS - An expandable stent comprised of a plurality of helical segments is disclosed. In one embodiment, the stent is generally cylindrical in shape having a cylindrical axis, and comprises a first and second set of helical segments. The helical segments in the first set are substantially parallel and have a first pitch forming a first helical angle with respect to the cylindrical axis. The helical segments in the second set are also generally parallel to each other and form a second pitch that differs from the first pitch, thereby forming a second helical angle with respect to the cylindrical axis. In an alternative embodiment, the stent comprises one set of helical segments and a plurality of circumferential elements that are joined together by the helical segments to form a plurality of cylindrical elements which are joined together to form a stent body. The stent may also have endzones.11-27-2008
20090248138STENTS - A stent is provided for external application to an artery in which an aneurysm has occurred or is about to occur to provide support thereto, the stent being of bespoke character by virtue of its creation to conform morphologically to the actual contour of the artery captured using for example MRI, CAD and RP.10-01-2009
20100114296INTRALUMENALLY-IMPLANTABLE FRAMES - Implantable frames for use in body passages are provided herein. The implantable frames can include a plurality of hoop members joined by a plurality of longitudinal connecting members to form a tubular frame defining a cylindrical lumen. The plurality of longitudinal connecting members may include first and second longitudinal connecting members joining a first hoop member to a second hoop member such that the first and second longitudinal connecting members extend across an entire space separating the first and second hoop members.05-06-2010
20100268326Expandable Framework with Overlapping Connectors - A stent may comprise a plurality of serpentine bands and connectors. A first connector may overlap a second connector when the stent is unexpanded. The first connector may also overlap the second connector in an unexpanded state when the stent is subject to compressive forces in the local area of the connectors, such as when the connectors are located on the inside of a curve. The second connector may be shaped according to a rotation of the first connector about the centroid of the cell between the first connector and the second connector.10-21-2010
20100280593STENT WITH VARIABLE FEATURES TO OPTIMIZE SUPPORT AND METHOD OF MAKING SUCH STENT - An intravascular stent especially suited for implanting in curved arterial portions or ostial regions. The stent can include an end region which is fabricated to have a greater radial strength than the remaining axial length of the stent. Such a stent is particularly suited for use in ostial regions, which require greater support near the end of the stent. The stent alternatively can include sections adjacent the end of the stent with greater bending flexibility than the remaining axial length of the stent. Such a stent is particularly suited for use in curved arteries. The stent can also be constructed with an end that has greater radial strength and sections adjacent the end with greater bending flexibility. Such a stent prevents flaring of the stent end during insertion.11-04-2010
20090149944Medical Devices and EFAB Methods and Apparatus for Producing Them - Various embodiments of the invention present miniature medical devices that may be formed totally or in part using electrochemical fabrication techniques. Sample medical devices include micro-tweezers or forceps, internally expandable stents, bifurcated or side branch stents, drug eluting stents, micro-valves and pumps, rotary ablation devices, electrical ablation devices (e.g. RF devices), micro-staplers, ultrasound catheters, and fluid filters. In some embodiments devices may be made out of a metal material while in other embodiments they may be made from a material (e.g. a polymer) that is molded from an electrochemically fabricated mold. Structural materials may include gold, platinum, silver, stainless steel, titanium or pyrolytic carbon-coated materials such as nickel, copper, and the like.06-11-2009
20120109283STENT HAVING ADJACENT ELEMENTS CONNECTED BY FLEXIBLE WEBS - A stent incorporating flexible, preferably polymeric, connecting elements into the stent wherein these elements connect adjacent, spaced-apart stent elements. Preferably the spaced-apart adjacent stent elements are the result of forming the stent from a helically wound serpentine wire having space provided between adjacent windings. Other stent forms such as multiple, individual spaced-apart ring-shaped or interconnected stent elements may also be used. The connecting elements are typically web-shaped and result from creating slits or apertures in a covering of graft material applied to the stent and then, for example, applying heat to cause the slits or apertures to enlarge. The remaining graft material forms the interconnecting webs between the adjacent stent elements.05-03-2012
20110046717DEVICE AND METHOD FOR TREATING A BODY LUMEN - A device and method for treating a body conduit/lumen having an undesired reduced diameter include delivering an expandable stent in a contracted configuration to a target location. The stent has small cells that form an open tight mesh providing the effective capture of small particles such as thrombi. Preferably, the tight mesh is combined with structure that permits creation of large side openings to accommodate lumen branches.02-24-2011
20100087913Temporary, Repositionable Or Retrievable Intraluminal Devices - A stent formed of a metallic material having a two-way memory adapted to be retrieved or repositioned after delivery includes an elongated tubular body and at least one crown connected to a respective longitudinal end of said body, the crown including a plurality of unconnected leaves, each leaf having a longitudinally extending frame connected at one end to said end of said body. A method of manufacturing the stent to that the crown has a greater two-way memory effect than the body is disclosed.04-08-2010
20100228337MIRROR IMAGE STENT AND METHOD OF USE - that at least a proximal end ring in combination with its associated links is the mirror image of a distal end ring and its associated links. The rings that form the proximal end and the rings that form the distal end have a radial stiffness associated therewith, and said stiffness is greater than a stiffness of the rings that form the interior portion of the stent. The dual stiffness of the stent leads to a more uniform expansion in the presence of uneven radial forces on the stent during the expansion process.09-09-2010
20100228338STENTS WITH TAPERED STRUTS - A stent may include a stent body having a stent axis. The stent body may include structural members defining openings through the stent body. The structural members are provided with regions having different widths. The relative sizes of the widths are selected to control the length of the stent body as the stent body is radially expanded from an undeployed orientation to a deployed orientation. In one embodiment, the regions having different widths are provided by tapering the widths of selected segments of the structural member.09-09-2010
20080208319Multi-Segment Modular Stent And Methods For Manufacturing Stents - A modular stent comprises at least one stent module including an intermediate segment consisting of one of either a closed-cell segment or a Z-segment and a pair of end segments connected to respective longitudinal ends of said intermediate segment, each end segment consisting of the other of said closed-cell segment or Z-segment, each closed-cell segment consisting solely of at least one annular closed-cell ring and each Z-segment consisting solely of at least one annular Z-ring. A method of manufacturing a stent form a small diameter tube includes laser-cutting the small diameter tube to define a plurality of longitudinally adjacent Z-rings, providing interconnector portions of said tube integrally joining facing aligned or offset Z-rings, expanding the small diameter tube, and removing predetermined interconnector portions from the expanded tube to provide the predetermined desired arrangement of interconnected closed-cell rings and Z-rings.08-28-2008
20110270383Methods for Crimping a Polymeric Stent Onto a Delivery Balloon - A medical device-includes a polymer stent crimped to a catheter having an expansion balloon. The stent is crimped to the balloon by a process that includes heating the stent to a temperature below the polymer's glass transition temperature to improve stent retention without adversely affecting the mechanical characteristics of the stent when later deployed to support a body lumen.11-03-2011
20090276034EXPANDABLE MEDICAL DEVICE FOR DELIVERY OF BENEFICIAL AGENT - An expandable medical device having a plurality of elongated struts, the plurality of elongated struts being joined together to form a substantially cylindrical device which is expandable from a cylinder having a first diameter to a cylinder having a second diameter, and the plurality of struts each having a strut width in a circumferential direction. At least one of the plurality of struts includes at least one opening extending at least partially through a thickness of said strut. A beneficial agent may be loaded into the opening within the strut. The expandable medical device may further include a plurality of ductile hinges formed between the elongated struts, the ductile hinges allowing the cylindrical device to be expanded or compressed from the first diameter to the second diameter by deformation of the ductile hinges.11-05-2009
20090281615STENT WITH TABS AND HOLES FOR DRUG DELIVERY - A stent can include a tubular body, a plurality of circumferential serpentine bands, a plurality of connectors extending between immediately adjacent serpentine bands, and a plurality of tabs. The plurality of tabs include peak tabs and trough tabs. Each peak tab and each trough tab have a first end and a second end wherein only the first end is engaged to a serpentine band, each peak tab extends substantially parallel to the longitudinal axis from a peak on a serpentine band toward a peak on an immediately distal serpentine band. Each trough tab extends substantially parallel to the longitudinal axis from a trough on a serpentine band toward a trough on an immediately proximal serpentine band. Each serpentine band defines a plurality of holes and each tab defines a plurality of holes. The holes are constructed and arranged to contain a therapeutic agent11-12-2009
20120143309LONGITUDINALLY FLEXIBLE EXPANDABLE STENT - Segmented articulatable stent of open structure comprised of end-connected struts of first and second lengths making up first and second segments with angular interconnects between adjacent first and second segments.06-07-2012
20120143313LONGITUDINALLY FLEXIBLE EXPANDABLE STENT - Segmented articulatable stent of open structure comprised of end-connected struts of first and second lengths making up first and second segments with angular interconnects between adjacent first and second segments.06-07-2012
20120143315LONGITUDINALLY FLEXIBLE EXPANDABLE STENT - Segmented articulatable stent of open structure comprised of end-connected struts of first and second lengths making up first and second segments with angular interconnects between adjacent first and second segments.06-07-2012
20100292777Stent - An expandable stent has a plurality of expandable rings formed of a plurality of struts and at least one first connector interconnecting adjacent expandable rings. The plurality of struts include a first strut and the at least one first connector has a first arm. A first portion of the first arm is engaged to a first portion of the first strut so that the first portion of the first arm and the first portion of the first strut define a through hole.11-18-2010
20130218259BIFURCATED SIDE-ACCESS INTRAVASCULAR STENT GRAFT - A bifurcated intravascular stent graft comprises primary stent segments and a primary graft sleeve, forming a main fluid channel and having a side opening therethrough. An external graft channel formed on the primary graft sleeve has a first end communicating with the side opening and an open second end outside the primary graft sleeve, thereby providing a branch flow channel from the main channel out through the side opening and external graft channel. The primary stent segments and graft sleeve engage an endoluminal surface of a main vessel and form substantially fluid-tight seals. The stent graft further comprises a secondary stent graft, which may be positioned partially within the external graft channel, through the open second end thereof, and partially within a branch vessel. The secondary stent graft engages the inner surface of the external graft channel and the endoluminal surface of the branch vessel, thereby forming substantially fluid-tight seals.08-22-2013
20080249608Bioabsorbable Polymer, Bioabsorbable Composite Stents - Biocompatible materials may be configured into any number of implantable medical devices including intraluminal stents. The biocompatible material may comprise metallic and non-metallic materials in hybrid structures. In one such structure, a device may be fabricated with one or more elements having an inner metallic core that is biodegradable with an outer shell formed from a polymeric material that is biodegradable. Additionally, therapeutic agents may be incorporated into the microstructure or the bulk material.10-09-2008
20080249609EXPANDABLE MEDICAL DEVICE WITH DUCTILE HINGES - An expandable tissue supporting device of the present invention employs ductile hinges at selected points in the expandable device. When expansion forces are applied to the device as a whole, the ductile hinges concentrate expansion stresses and strains in small well defined areas. The expandable medical device including ductile hinges provides the advantages of low expansion force requirements, relatively thick walls which are radio-opaque, improved crimping properties, high crush strength, reduced elastic recoil after implantation, and control of strain to a desired level. The expandable tissue supporting device includes a plurality of elongated beams arranged in a cylindrical device and connected together by a plurality of ductile hinges. Although many ductile hinge configurations are possible, the ductile hinges preferably have a substantially constant hinge cross sectional area which is smaller than a beam cross sectional area such that as the device is expanded from a first diameter to a second diameter, the ductile hinges experience plastic deformation while the beams are not plastically deformed.10-09-2008
20110208291BISTABLE SPRING CONSTRUCTION FOR A STENT AND OTHER MEDICAL APPARATUS - The present invention is directed to bistable cells and their use in devices, particularly medical devices such as stents, clamps and valves. An expandable stent formed of a plurality of bistable cells is described. The stent has two or more stable configurations, including a first stable configuration with a first diameter and a second stable configuration with a second, larger diameter. A valve comprising a bistable cell for use in eliminating incontinence is also disclosed.08-25-2011
20080281403Stent and Stent Retrieval System and a Method of Pulling a Stent Into a Tubular Member - A stent has an engagement member (11-13-2008
20080281404Stent with Offset Cell Geometry - A stent defining a longitudinal axis is disclosed. A plurality of circumferential support structures are spaced-apart along the longitudinal axis. At least some of the circumferential support structures are interconnected by connection members that extend generally in a circumferential direction.11-13-2008
20080228261Intravascular stent with integrated link and ring strut - An expandable stent is implanted in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The stent includes a plurality of rings connected by links. The stent has a high degree of flexibility in the longitudinal direction, yet has adequate vessel wall coverage and radial strength sufficient to hold open an artery or other body lumen. The stent can be compressed or crimped onto a catheter to a very low profile since links are integrally formed from a portion of the struts forming the rings. The stent is constructed so that the cylindrical rings are very close together in order to provide maximum scaffolding, and if the stent has a drug coating, to provide a uniform drug delivery over the length of the stent. The connecting links are integrally formed from a portion of the struts forming the rings so that the links can have a maximum length thereby providing increased longitudinal flexibility of the stent.09-18-2008
20080294242EXPANDABLE MEDICAL DEVICE WITH DUCTILE HINGES - An expandable tissue supporting device of the present invention employs ductile hinges at selected points in the expandable device. When expansion forces are applied to the device as a whole, the ductile hinges concentrate expansion stresses and strains in small well defined areas. The expandable medical device including ductile hinges provides the advantages of low expansion force requirements, relatively thick walls which are radio-opaque, improved crimping properties, high crush strength, reduced elastic recoil after implantation, and control of strain to a desired level. The expandable tissue supporting device includes a plurality of elongated beams arranged in a cylindrical device and connected together by a plurality of ductile hinges. Although many ductile hinge configurations are possible, the ductile hinges preferably have a substantially constant hinge cross sectional area which is smaller than a beam cross sectional area such that as the device is expanded from a first diameter to a second diameter, the ductile hinges experience plastic deformation while the beams are not plastically deformed.11-27-2008
20080294240Flexible stent with torque-absorbing connectors - The present invention concerns a stent with a highly flexible structure that is configured to provide an elevated degree of vessel scaffolding and to absorb torque applied on the stent. In one embodiment, the stent of the present invention includes an essentially tubular body formed by a web structure that is composed of a plurality of longitudinally adjacent web rings, each including a plurality of web elements that are disposed circumferentially around the longitudinal axis of the stent and that are adjoined one to the other by a junction bend. Each junction bend in a first web ring is coupled to another junction bend in a neighboring ring by a connector having a step-wise configuration, in which a central segment of the connector is disposed essentially parallel to the longitudinal axis of the stent and may become twisted to absorb torque imposed on the stent.11-27-2008
20080262600MULTILAYER STENT - A composite stent having a substrate tube made of stainless steel, a nickel-cobalt-chromium-molybdenum alloy, or chonichrome with at least one metal cladding tube is disclosed. Specifically, the substrate tube is placed within a metal cladding tube made of platinum, gold, tantalum, tungsten, platinum-iridium, palladium, or nickel-titanium, preferably with an interference fit therebetween. The composite, laminate tube then undergoes a series of rolling or cold drawing processes interspersed with heat treating to release built up stresses. When the final diameter of the laminate tube is reached, the cladding has been laminated to the exterior of the substrate tube by a bond generated from the rolling and/or cold drawing operations. The finished laminate tube is then cut by laser cutting or chemical etching to form a suitable stent pattern.10-23-2008
20080269873FLEXIBLE EXPANDABLE STENT - A stent for implanting in the body to hold open a blood vessel includes cells with facing loops and the curved flexible links disposed and adapted to cooperate so that, when unexpanded, the stent can flex as it is moved through curved blood vessels to a site where it is to be expanded and so that, when the stent is expanded in a curved vessel, at that site, as compared to each other, cells on the outside of the curve are open in length, but narrow in width as compared to cells on the inside of the curve which are short in length but increased in width to result in a more constant stent cell area between the inside and the outside of the curve than would otherwise occur causing the stent, when coated with a medicine, to apply a more even dose to the inside wall of the lumen, avoiding the possibility that a toxic dose is supplied at one area while a less than effective dose is applied to another area.10-30-2008
20080294238Connector Node for Durable Stent - A stent has adjacent bands being connected by connectors. Each band has a plurality of interconnected struts. The width of a portion of a strut end region is greater than the width of a portion of the strut medial region. Adjacent strut end regions within a band are connected at a turn. Each connector has first and second connector end regions, and a connector medial region. The width of a portion of the first connector end region or second connector end region is greater than the width of a portion of the connector medial region. The first connector end region is engaged to one turn of a first band and the second connector end region is engaged to one turn of a second longitudinally adjacent band, the first and second bands having connected turns and unconnected turns, the connected turns having a greater width than the unconnected turns.11-27-2008
20080288048STENTS FOR ANGIOPLASTY - This invention is a stent having a substantially tubular body defining a longitudinal axis comprising first and second adjacent annular segments, each segment defining a substantially sinusoidal shape having a plurality of peaks and valleys, the peaks of the first segment extending toward the second segment and being aligned longitudinally with the valleys of the second segment. The stent has a plurality of bridge elements having a U-shaped portion between first and second connector arms, the first connector arm of one bridge element being connected between a first peak and a first valley of the first segment and the second connector arm being connected between a first peak and a first valley of the second segment.11-20-2008
20090099644COVERED STENT - A stent to be used in an intraluminal cavity is disclosed. The stent comprises an elongated scaffold formed by a plurality of cells formed by a plurality of interlinked struts. In some embodiments, the scaffold comprises two longitudinally opposed ends, each of the ends having at least one protrusion that can be used to secure a cover to the stent. Each protrusion defines a cavity extending therethrough. The cover is secured to the scaffold at the protrusion by an adhesive extending through the cavity. Alternatively, the scaffold comprises at least two protrusions or segments, each defining a cavity for securing one end of the cover to the scaffold.04-16-2009
20090030502Socket For Fenestrated Tubular Prosthesis - A stent graft adapted to telescopically receive a secondary stent graft characterized in that the stent graft comprises at least one socket communicating with at least one opening in the stent graft. The at least one socket comprises an elastic wall that forms a lumen with a stent at least partially encased within the wall. The socket can be adapted for use with stent grafts for implantantation in an aneurysm.01-29-2009
20100145433ENDOPROSTHESES FOR DEPLOYMENT IN A BODY LUMEN - Example embodiments include an endoprosthesis that has a first annular segment that is radially expandable and a second annular segment that is also radially expandable. An axial segment, which includes one or more struts, is operatively associated with the first annular segment and the second annular segment to maintain a specified distance between the first annular segment and the second annular segment.06-10-2010
20110224777STENT WITH INDEPENDENT STENT RINGS AND TRANSITIONAL ATTACHMENTS - A vascular endoprosthesis (09-15-2011
20100004736ANGIOPLASTY STENTS - An angioplasty stent comprises a body comprising a plurality of successive segments connected in pairs by bridge means so that the successive segments can be oriented relative to one another for the purposes of bending of the body in any direction defined by a linear combination of respective orientation axes defined by the bridge connection means. During the radial expansion of the stent, the axial contraction of the segments resulting from the opening-out of the respective loops is compensated by axial projection of the bridge elements from the respective concave portions. The wall of the body comprises arms for supporting a lumen as well as regions which are selectively deformable during the expansion of the stent, the arms and the selectively deformable regions having different cross-sections and/or cross-sectional areas. At least one portion of the body may have a substantially reticular structure, the branches of which define geometrical figures identifiable as fractals.01-07-2010
20090005856ENDOPROSTHESES FOR PERIPHERAL ARTERIES AND OTHER BODY VESSELS - An endoprostheses for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen includes a plurality of elongate strut members spaced apart and extending along a longitudinal axis, each elongate strut member having a plurality of alternating peaks and valley. At least one flexible connecting link connects each elongate strut member to an adjacent elongate strut member. The elongate strut members and connecting links forming a generally tubular stent body having a first delivery diameter and a second implanted diameter. The positioning of the connecting links along the stent body produces desired stent performance characteristics.01-01-2009
20090187239STENT, STENT DELIVERY DEVICE AND STENT DELIVERY METHOD - A stent to be implanted in a living body is formed substantially as a tube having a form in which plural wavy annular members are arranged adjacent to each other in the axial direction of the stent, with the axially adjacent wavy annular members connected to each other. The stent possesses an outer diameter whose dimension is so set that the stent is insertable into a lumen inside a living body, and is expandable when a force spreading radially from the inside of the tube is applied. The wavy annular member has parallel straight-line portions extending parallel to the axis of the stent before and after the stent expands. The stent has connection portions each connecting ends of the parallel straight-line portions of the adjacent wavy annular members to each other.07-23-2009
20090259293Side Branch Stent Having a Proximal Split Ring - A stent has a generally cylindrical body portion and is intended for placement in a side branch vessel associated with a bifurcated or trifurcated vessel. The side branch stent includes a proximal split ring formed of two detached semi-circular portions, a first semi-circular portion and a second semi-circular portion. The first semi-circular portion has a larger radius than the second semi-circular portion such that in a compressed or crimped state, the second semi-circular portion nests within the first semi-circular portion to achieve a low delivery profile. Upon expansion of the side branch stent as explained in further detail below, the two detached semi-circular portions expand to form a ring. The outer diameter of the proximal split ring, in both the compressed and expanded configurations, is larger than the outer diameter of the side branch stent's generally cylindrical body portion. The proximal split ring is used as a stopper or anchor which contacts the ostium of a vessel or the inner surface of a stent deployed in a main vessel of a bifurcated vessel in order to properly position the side branch stent in a side branch vessel.10-15-2009
20080319530ENDOVASCULAR PROSTHESIS AND A METHOD OF CONNECTING A STRUCTURAL COMPONENT AND A WOVEN GRAFT MATERIAL - An endovascular prosthesis that includes a stent and a woven graft material. The stent is connected to the graft material by direct attachment of the stent to the graft material at thermoplastically fused regions of the graft material.12-25-2008
20090024205Radially Expandable Stent - A highly compressible stent is described. The stent includes a plurality of circumferentially offset and interconnected undulating rings having intermediate struts disposed between at least some of the undulating ring struts.01-22-2009
20090024206STENT WITH VARIABLE FEATURES TO OPTIMIZE SUPPORT AND METHOD OF MAKING SUCH STENT - An intravascular stent especially suited for implanting in curved arterial portions or ostial regions. The stent can include an end region which is fabricated to have a greater radial strength than the remaining axial length of the stent. Such a stent is particularly suited for use in ostial regions, which require greater support near the end of the stent. The stent alternatively can include sections adjacent the end of the stent with greater bending flexibility than the remaining axial length of the stent. Such a stent is particularly suited for use in curved arteries. The stent can also be constructed with an end that has greater radial strength and sections adjacent the end with greater bending flexibility. Such a stent prevents flaring of the stent end during insertion.01-22-2009
20110144736FLEXIBLE STENT - The present invention is directed to a flexible expandable stent for implantation in a body lumen, such as a coronary artery. The stent generally includes a series of metallic cylindrical rings longitudinally aligned on a common axis of the stent and interconnected by a series of links which be polymeric or metallic. Varying configurations and patterns of the links provides longitudinal and flexural flexibility to the stent while maintaining sufficient column strength to space the cylindrical rings along the longitudinal axis. The metallic material forming the rings provides the necessary radial stiffness.06-16-2011
20110144737POLYMERIC STENT HAVING MODIFIED MOLECULAR STRUCTURES - A biocompatible material may be configured into any number of implantable medical devices including intraluminal stents. Polymeric materials may be utilized to fabricate any of these devices, including stents. The stents may be balloon expandable or self-expanding. By preferential mechanical deformation of the polymer, the polymer chains may be oriented to achieve certain desirable performance characteristics.06-16-2011
20090192590EXPANDABLE STENT AND METHOD FOR DELIVERY OF SAME - An expandable stent comprising a proximal end and a distal end in communication with one another and a tubular wall disposed between the proximal end and the distal end. The tubular wall has a longitudinal axis and a porous surface defined by a plurality of intersecting members comprising a series of longitudinal struts disposed substantially parallel to the longitudinal axis of the stent. Each longitudinal strut in the series comprises flexure means for substantially complementary extension and compression of a diametrically opposed pair of the longitudinal struts upon flexure of the stent. The stent is expandable from a first, contracted position to a second, expanded position upon the application of a radially outward force on the stent. The provision of such flexure means in the series of longitudinal struts leads to a very desirable balance of lateral flexibility of the unexpanded stent and radial rigidity of the expanded stent.07-30-2009
20110230959INTRAVASCULAR STENT WITH INVERTED END RINGS - The invention is directed to an expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The invention provides for an intravascular stent having a plurality of cylindrical rings connected by undulating links. A plurality of inverted cylindrical end rings can be coupled at least in part to a plurality of adjacent cylindrical rings in the form of mirror images such that a symmetrical configuration is present on at least one of a proximal end and a distal end of the stent. The stent has a high degree of flexibility in the longitudinal direction, yet has adequate vessel wall coverage and radial strength sufficient to hold open an artery or other body lumen. The inverted end ring configuration of the stent aims at reducing the stent-to-shoulder distance as well as delivering therapeutic drug to the peri-stent area while maintaining a pristine stent deployment.09-22-2011
20090054967Flexible Cells for Axially Interconnecting Stent Components - Interconnects 02-26-2009
20110230957ALTERNATING CIRCUMFERENTIAL BRIDGE STENT DESIGN AND METHODS FOR USE THEREOF - A stent includes a first section and a second section. The second section is aligned with the first section along a longitudinal axis of the stent. Each section includes a plurality of expandable modules and a plurality of bridging modules. Each expandable module includes a plurality of strut elements that join together at a plurality of apices. Each bridging module includes bridging elements that connect an apex of a first module with an apex of a second module. The plurality of expandable modules or the plurality of bridging modules in the first section are more radially stiff than the plurality of expandable modules or the plurality of bridging modules in the second section such that at least a portion of the first section is configured to be placed in a region of a vein subjected to physiologic compression.09-22-2011
20110230956REPOSITIONABLE ENDOLUMINAL SUPPORT STRUCTURE AND ITS APPLICATIONS - An endoluminal support structure includes strut members interconnected by pivot joints to form a series of linked scissor mechanisms. The structure can be remotely actuated to compress or expand its shape by adjusting the scissor joints within a range of motion. In particular, the support structure can be repositioned within the body lumen or retrieved from the lumen. The support structure can be employed to introduce and support a prosthetic valve within a body lumen.09-22-2011
20120078344STENT WITH SUPPORT BRACES - A stent includes expandable rings formed from a plurality of interconnected struts. A plurality of bridges couple adjacent rings together. The bridges are connected to adjacent rings at first and second connection points, and a first brace element is disposed therebetween. The first connection point is circumferentially offset relative to the second connection point so that the bridge is transverse to the longitudinal axis of the stent. The first brace element of one bridge engages an adjacent bridge or a brace element of the adjacent bridge when the corresponding adjacent rings are in the contracted configuration thereby providing additional support and rigidity to the stent to lessen buckling of the stent during loading onto a delivery catheter or during deployment therefrom.03-29-2012
20080262601Stent Device with Multiple Helix Construction - An improved stent design is disclosed that employs a series of helically oriented expansion elements encircling the stent. Each of the expansion elements includes a stepped pattern employing two distinct pitch angles. The expansion elements are oriented to cooperate with each other to form a series of virtual radially expandable rings that provide suitable outward force for proper stent function, but which are not connected together to form a continuous coherent ring if separated from the stent as a whole. In this manner, a distinctive stent design is provided that has numerous functional benefits over stents described in the prior art.10-23-2008
20090204201BEND-CAPABLE STENT PROSTHESIS - Normally, when stents are bent, inside the body of the stented patient, there is head-to-head collision between facing V-points on the inside of the bend. However, by alternating between two whole numbers the number of struts between successive connectors around the circumference of each of the stenting rings, the V-points are caused to veer circumferentially in opposite directions as they approach each other on the inside of the bend, so allowing them to pass by each other without collision, thereby allowing in the same stent both close packing of the ring stack, and an enhanced ability to tolerate severe bending, after placement in the body.08-13-2009
20090204202STENT DESIGNS FOR USE WITH ONE OR MORE TRIGGER WIRES - The present embodiments provide a stent for use in a medical procedure that comprises a series of proximal apices disposed at a proximal end of the stent and a series of distal apices disposed at a distal end of the stent. A trigger wire is adapted to be coupled to at least one of the proximal apices to restrain a proximal end of the stent during delivery. In a first embodiment, a first proximal apex comprises a bore for receiving the trigger wire, and a second proximal apex, disposed adjacent to the first proximal apex, comprises at least one barb. The trigger wire therefore is only coupled to selected ones of the proximal apices. In an alternative embodiment, a first proximal apex comprises a first bore and a second, adjacent proximal apex comprises a second bore, such that a single trigger wire may be disposed through the first and second bores to restrain the first and second proximal apices during delivery.08-13-2009
20090204200Highly Flexible Stent and Method of Manufacture - Preferred embodiments of a stent with a high degree of flexibility are shown and described. The stent can include a continuous helical winding and at least one bridge. The continuous helical winding has a plurality of circumferential sections that circumscribe a longitudinal axis from a first end to a second end to define a tube. The circumferential sections are spaced apart along the axis. The at least one bridge is configured to connect one circumferential section to an axially-spaced adjacent circumferential section. The at least one bridge extends on a plane generally orthogonal with respect to the axis.08-13-2009
20110144738ENDOPROSTHESIS HAVING STRUTS LINKED BY FOOT EXTENSIONS - The present invention relates to an endoprosthesis having a plurality of web rings coupled by connectors, which include two or more essentially parallel struts and a foot extension protruding from one of the struts. An endoprosthesis constructed according to the principles of the present invention provides an elevated degree of scaffolding to a body lumen while retaining an acceptable degree of flexibility.06-16-2011
20110224778STENT PATTERN FOR POLYMERIC STENTS - A stent having a stent pattern including a plurality of cylindrical rings, each ring including a plurality of diamond-shaped cells having four curved elements defining apices of the diamond-shaped cells is disclosed herein.09-15-2011
20090240318STENT EXPANSION COLUMN, STRUT AND CONNECTOR SLIT DESIGN - A bifurcated stent that is positionable adjacent to a branched body vessel. The stent includes a number of stent members at least some of which have slits extending through them. The slits are positioned relative to the tensile and compressive forces imposed by stent expansion to enhance the flexibility of the stent members. The slits can be positioned to increase stent compression about a catheter, increase how far the stent can be bent during catheter deployment, and allow specific portions of the stent to have improved flexibility. The slits can allow the stent to assume a bent shape, and compensate for rigidity imposed the bifurcating side branch. The slits can be combined with curved sections to create a highly flexibly stent.09-24-2009
20090240319Intraluminal Flexible Stent Device - A stent made up of at least two connected bands, each band having a pattern of undulations formed from long, short and mid-sized segments connected together by turns. In particular, the pattern includes a repeating series having five segments: a long segment, a short segment, a mid-sized segment, a mid-sized segment, a short segment (LSMMS). When adjacent bands are connected together to form the stent body, the LSMMS segment configuration forms a series of consecutive tapered gaps between the consecutive unconnected close ended turns of adjacent bands which provide greater flexibility for the stent. The series of consecutive tapered gaps allow the stent to flex with little or no interference with adjacent bands when the stent is tracked around a small radius bend in a vessel. In addition, the length of the longest rigid element of the stent is decreased to further improve flexibility. A rigid element is formed by the lengths of the segments on both sides of a connection between adjacent bands. By decreasing the length of this rigid element, the length which must be tracked around the bends of a vessel is shortened and thus the stent is easier to advance.09-24-2009
20100274348Modular Stent Assembly - The present invention relates to an assembly (10-28-2010
20080215133LONGITUDINALLY FLEXIBLE STENT - An intravascular stent especially suited for implanting in curved arterial portion. The stent retains longitudinal flexibility after expansion. The stent is formed of intertwined meander patterns forming triangular cells. The cells are adapted to provide radial support, and also provide longitudinal flexibility after expansion. The cells also provide increase coverage of a vessel wall. The stent has a reduced crimped profile due to the differing lengths of adjacent structural members within the cells, resulting in loops which are not aligned around the circumference of the stent. Also, this stent may contain a second type of square cells, which are adapted predominately to minimize flaring of the stent ends and to provide additional stiffness.09-04-2008
20120172975Medical Device for Fluid Flow and Method of Forming Such Device - A medical device which defines a lumen for flowing a bodily fluid from an upstream end of the device to a downstream end thereof is disclosed. The device has a luminal wall (07-05-2012
20120172971STENT WITH OFFSET CELL GEOMETRY - A stent defining a longitudinal axis is disclosed. A plurality of circumferential support structures are spaced-apart along the longitudinal axis. At least some of the circumferential support structures are interconnected by connection members that extend generally in a circumferential direction.07-05-2012
20100161033GRADUALLY SELF-EXPANDING STENT - A gradually self-expanding stent includes a first plurality of stent cells including a first plurality of circumferentially adjacent structural members in mechanical communication with each other. The stent also includes a second plurality of stent cells including a second plurality of circumferentially adjacent structural members in mechanical communication with each other. The circumferentially adjacent structural members of the first and second plurality of stent cells have a compressed configuration and an expanded configuration. A restraining material is attached to each of the circumferentially adjacent structural members defining each of the second plurality of stent cells such that it substantially covers an entirety of each of the second plurality of stent cells in the compressed configuration. Over time, the restraining material releases the structural members defining each of the second plurality of stent cells, thereby allowing the second plurality of stent cells to assume the expanded configuration.06-24-2010
20100228339LONGITUDINALLY FLEXIBLE STENT - An intravascular stent especially suited for implanting in curved arterial portion. The stent retains longitudinal flexibility after expansion. The stent is formed of intertwined meander patterns forming triangular cells. The cells are adapted to provide radial support, and also provide longitudinal flexibility after expansion. The cells also provide increase coverage of a vessel wall. Loops in the stent are disposed and adapted to cooperate, so that after expansion of said stent within a curved lumen, the stent is curved and cells on the outside of the curve open in length, but narrow in width, whereas cells on the inside of the curve shorten in length, but thicken in width to maintain a density of the stent element area which is much more constant than otherwise between the inside and outside of the curve. The stent also minimizes flaring out by eliminating free loops of the radially supporting circumferential bands of loops.09-09-2010
20100217381LOW PROFILE SUPPORT FRAME AND RELATED INTRALUMINAL MEDICAL DEVICES - A low profile support frame for use as an or in an expandable intraluminal medical device includes first and second wire members that define arcuate paths having opposing curves. Connectors join the wire members, and barbs can be disposed on the connectors. The support frame has radially compressed and radially expanded configurations. When the support frame is in the radially expanded configuration, substantially no portion of the support frame is disposed on a first transverse axis of the frame opposite one end of the frame and substantially no portion of the frame is disposed on a second transverse axis of the frame opposite the other end of the frame. The support frame can be used as an intraluminal medical device by itself or as a component in a medical device that includes other components, such as a stent, prosthetic valve, occluder, or filter.08-26-2010
20100241217Stent - A radially expandable stent comprising a plurality of spaced band-like elements and intersecting links is disclosed. The band-like elements have a generally serpentine configuration to provide continuous waves of generally sinusoidal character to each band-like element. The waves are characterized by a plurality of peaks and troughs taking a generally longitudinal direction along the cylinder such that the waves in the band-like elements open as the stent is expanded from a first diameter to a second diameter. The intersecting links are substantially U-shaped and terminate in first and second shanks. The first shank of a link emanates from a region between a peak and trough on a band-like element and the second shank of the link emanates from a region between a peak and trough on an adjacent band-like element.09-23-2010
20090076590ENDOPROSTHESES WITH STRUT PATTERN HAVING MULTIPLE STRESS RELIEVERS - An endoprostheses for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen can be formed with a structure, referred to as a stress reliever, designed to distribute and reduce the amount of strain which can act on the movable struts of the stent. Stress relievers can be disposed at a strut junction where one end of a strut is attached to the end of an adjacent strut. The positioning and shape of the stress reliever help to distribute the amount of strain that would otherwise be exerted on the movable struts as the struts move relative to each other. As a result, there is less possibility that the struts will fracture at the strut junction when the struts move from a collapsed position to an expanded position.03-19-2009
20090076592Stent with Protruding Branch Portion for Bifurcated Vessels - The present invention is directed to a stent for use in a bifurcated body lumen having a main branch and a side branch. The stent comprises a radially expandable generally tubular stent body having proximal and distal opposing ends with a body wall having a surface extending therebetween. The surface has a geometrical configuration defining a first pattern, and the first pattern has first pattern struts and connectors arranged in a predetermined configuration. The stent also comprises a branch portion comprised of a second pattern, wherein the branch portion is at least partially detachable from the stent body.03-19-2009
20090076591Stent Design Allowing Extended Release of Drug and/or Enhanced Adhesion of Polymer to OD Surface - The invention is directed to mechanisms and methods that reduce the delamination of a therapeutic agent from a stent. The mechanisms include holes (channels, wells, and other hole configurations), protrusions, sintered metal cores, clamps/staples, pins, and stainless steel shields.03-19-2009
20100145434KINK RESISTANT BIFURCATED PROSTHESIS - The invention relates to an endoluminal prosthesis adapted for placement at a bifurcation site within the body. The stent or stent-graft may be constructed to have segments of differing structural properties. A section of the stent-graft may be constructed to have a single-lumen tubular stent member covering a multilumen graft member. The stent-graft may comprise at least two modular components adapted for in situ assembly. An extended cylindrical interference fit may be used to seal the modular components.06-10-2010
20100241215CONFORMABLE STENT STRUCTURE AND METHOD OF MAKING SAME09-23-2010
20110112627Stents with Enhanced Fracture Toughness - Stents and methods of manufacturing a stents with enhanced fracture toughness are disclosed.05-12-2011
20120035709ENDOPROSTHESIS HAVING FOOT EXTENSIONS - Endoprosthesis for delivery in a body lumen is provided. The endoprosthesis includes an annular element defined by a set of interconnected strut members, each strut member including a first end and a second end. The first end of selected pairs of circumferentially-adjacent strut members of the annular element are interconnected to define apices proximate a first longitudinal side of the annular element and the second end of selected pairs circumferentially-adjacent strut members are interconnected to define apices proximate a second longitudinal side of the annular element. At least one of the selected pairs of circumferentially-adjacent strut members has a modulator disposed proximate the apex defined there between, the modulator having a first mode to allow expansion of the annular element from an unexpanded configuration toward an expanded configuration and a second mode to resist contraction of the annular element from the expanded configuration toward the unexpanded configuration.02-09-2012
20100222868Stent - A stent with strut bands and connectors, wherein the strut bands have long and short struts with a junction positioned between the short struts. Each junction defines a reservoir, wherein the reservoirs of a strut band are substantially circumferentially aligned. The connectors each have arms, wherein each arm includes an opposing U-shaped link. The opposing links have a shared portion disposed between a peak on one strut band and a longitudinally adjacent trough of an adjacent strut band.09-02-2010
20080288049Stent for In-Stent Restenosis - A second stent having a wall thickness of 0.002 inches or less or a second stent having a tubular surface with openings therethrough where the ratio of the area of the surface to the area of the openings is at least 3:7 may be implanted in a first stent which has been previously implanted in a bodily vessel.11-20-2008
20130218260Bend-Capable Tubular Prosthesis - A tubular prosthesis having a succession of turns around a longitudinal axis includes connectors between adjacent turns distributed around the circumference of the prosthesis. Each turn includes struts interspersed by inflection zones located at the axial ends of each turn such that, when the prosthesis expands radially, gaps open up between adjacent struts of each of the turn. The inflection zones are distributed regularly around the circumference so that the gaps are substantially the same size as each other around the circumference of the turn. The prosthesis may include a turn that exhibits a stagger zone within which the gap between adjacent struts is of an individual size different from that common to the other gaps of that turn. The inflection zones in that turn that lie circumferentially next to the stagger zone are displaced out of facing relationship with corresponding zones of inflection in the adjacent turn.08-22-2013
20120143314LONGITUDINALLY FLEXIBLE EXPANDABLE STENT - Segmented articulatable stent of open structure comprised of end-connected struts of first and second lengths making up first and second segments with angular interconnects between adjacent first and second segments.06-07-2012
20120143308LONGITUDINALLY FLEXIBLE EXPANDABLE STENT - Segmented articulatable stent of open structure comprised of end-connected struts of first and second lengths making up first and second segments with angular interconnects between adjacent first and second segments.06-07-2012
20120143312LONGITUDINALLY FLEXIBLE EXPANDABLE STENT - Segmented articulatable stent of open structure comprised of end-connected struts of first and second lengths making up first and second segments with angular interconnects between adjacent first and second segments.06-07-2012
20120143311LONGITUDINALLY FLEXIBLE EXPANDABLE STENT - Segmented articulatable stent of open structure comprised of end-connected struts of first and second lengths making up first and second segments with angular interconnects between adjacent first and second segments.06-07-2012
20120143310LONGITUDINALLY FLEXIBLE EXPANDABLE STENT - Segmented articulatable stent of open structure comprised of end-connected struts of first and second lengths making up first and second segments with angular interconnects between adjacent first and second segments.06-07-2012
20100063582ENDOVASCULAR DEVICE - Embodiments of an endovascular device and of methods for treating an aneurysm therewith are described. In certain embodiments, an endovascular device includes a distal assembly coupled to a flow reducing member. In some embodiments, the distal assembly is composed of multiple engagement members that, when deployed within an aneurysm, engage an inner surface of the aneurysm. In certain embodiments, the engagements members are substantially parallel to a central axis of the distal assembly in a first position and shift away from the central axis to a second position, and the distal ends of some engagement members are substantially curled when in the second position. In certain embodiments, the flow-reducing member reduces blood flow from a blood vessel into the aneurysm. In certain embodiments the flow reducing member includes a membrane, which can include a porous section.03-11-2010
20090319027SELF-EXPANDABLE STENT - A self-expandable stent includes axially arranged wavy-line annular bodies having a first shared linear portion and a second shared linear portion on one end side, a third shared linear portion and a fourth shared linear portion on the other end side, a first bent linear portion coupled with the first and third shared linear portions, a second bent linear portion coupled with the third and second shared linear portions, a third bent linear portion coupled with the second and fourth shared linear portions, and a fourth bent linear portion coupled with the fourth and first shared linear portions. Two of the four bent linear portions have a first equal number of bends and a common form at inversion, and the other two of the four bent linear portions have an equal number of bends different from the first equal number of bends and a common form at inversion.12-24-2009
20080294239Flexible stent with elevated scaffolding properties - The present invention concerns a stent that generates an elevated degree of scaffolding to a bodily vessel while retaining a highly flexible structure. In one embodiment, a stent according to the present invention includes an essentially tubular body formed by a web structure that is configured to expand from a contracted delivery configuration to an expanded deployed configuration and that is composed of a plurality of longitudinally adjacent web rings. Those web rings are formed by a plurality of web elements disposed circumferentially around the longitudinal axis of the stent and adjoined one to the other with a junction bend. Each junction bend in a first web ring is coupled to another junction bend in a neighboring ring with a S-shaped connector, and the coupled junction bends are not longitudinally aligned but are instead laterally offset.11-27-2008
20110060401Tubular Supporting Prosthesis Capable of Growing - The invention relates to a tubular supporting prosthesis capable of growing, comprising a mesh structure, wherein the mesh structure comprises at least two structural rings, which are connected to each other via connecting members and are disposed point-symmetrically about the longitudinal supporting prosthesis axis, wherein the structural rings and/or the connecting members have at least one predetermined breaking point.03-10-2011
20090069881Bifurcated Stent with Open Ended Side Branch Support - In some embodiments, a stent comprises a side branch structure defining an inner side branch cell. The inner side branch cell has a shape that is different from any other cell of the stent. The stent further comprises first and second support members, which are positioned on opposite sides of the side branch structure. The first and second support members each have a strut width that is greater than the width of a strut included in the side branch structure. The stent further comprises first and second connecting members, which are positioned on opposite ends of the side branch structure. Each connecting member is connected at one end to the first support member and is connected at the other end to the second support member. Each connecting member comprises a serpentine structure having a plurality of straight struts and turns. One or both of the connecting members includes at least one straight strut that has a length that is at least ten times its width. In some embodiments, each connecting member comprises at least four struts that have a length that is at least then times their width.03-12-2009
20090036973PTFE LAYERS AND METHODS OF MANUFACTURING - Thin PTFE layers are described having little or no node and fibril microstructure and methods of manufacturing PTFE layers are disclosed that allow for controllable permeability and porosity of the layers. In some embodiments, the PTFE layers may act as a barrier layer in an endovascular graft or other medical device.02-05-2009
20090036972Stent With Flexible Sections In High Strain Regions - A stent for treating a bodily lumen with a flexible section in a high strain region is disclosed. A flexible section may be selectively positioned to reduce an amount of strain in the high strain region when subjected to the applied stress during use to inhibit or prevent fracturing in the high strain region.02-05-2009
20130138203Prosthesis having a plurality of distal and proximal prongs - An expandable vascular stent includes an m×n array of ovals formed in a cylinder, m being the number of columns of ovals in the circumferential direction and n being the number of rows of ovals in the axial direction, and a plurality of prongs extending inwardly from the outer ends of respective ovals in rows 1 and n of the m×n array, and being arranged in facing pairs extending from axially-aligned ovals. The cylinder is expandable from an initial diameter to a pre-determined final diameter, wherein an increase in the diameter of the stent results in a substantial decrease in the length of the stent. The tube and the prongs can be made of surgical stainless steel, the tube being expandable using an angioplasty balloon; or the tube and the prongs can be made of a memory metal and the tube is self-expanding.05-30-2013
20130138204STENT - A stent that is extremely useful in practice, with excellent proof stress (elastic limit stress).05-30-2013
20110029063AUXETIC STENTS - Stents of the type used to treat and prevent localized flow constriction in body vessels are based upon negative Poisson's ratio (NPR) structures. An auxetic stent constructed in accordance with this invention comprises a tubular structure having two ends defining a length with a central longitudinal axis and an axial view defining a cross section. The tubular structure is composed of a plurality of unit cells with two different configurations, called V-type and X-type. In V-type auxetic stents, each unit cell comprises a pair of side points A and B defining a width, a first pair of members interconnecting points A and B and intersecting at a point C forming a first V shape, and a second pair of members interconnecting points A and B and intersecting at a point D forming a second V shape. In X-type auxetic stents, each unit cell comprises eight points from A to H defining an outline of the unit cell. Eight straight or curved members interconnecting points A and B, B and C, C and D, C and E, E and F, F and G, G and H, G and A, respectively, forming the X-type unit cell. In both configurations, the unit cells are connected in rows and columns, such that compression of the structure between the two ends thereof causes the cross section of the structure to shrink in size. The auxetic structure configurations invented can also be used, with similar dimensions or significantly different dimensions, for other applications, such as in a nano-structural device, a tubal fastener design, or in an application associated with a large oil pipe or other pipelines.02-03-2011
20110009950VASCULAR AND BODILY DUCT TREATMENT DEVICES AND METHODS - A device including a self-expandable member having a proximal end portion and a main body portion. The self-expandable member is movable from a first delivery position to a second placement position, in the first delivery position the expandable member being in an unexpanded position and having a nominal first diameter and in the second position the expandable member being in a radially expanded position and having a second nominal diameter greater than the first nominal diameter for deployment within a vessel or duct of a patient. The expandable member includes a plurality of cell structures with the cell structures in the main body portion extending circumferentially around a longitudinal axis of the expandable member and the cell structures in the proximal end portion extending less than circumferentially around the longitudinal axis of the expandable member. In one implementation the cell structures have dimensional and material characteristics that result in about a −1.5N to a about a −3.5N overall reduction in radial force along the length of the expandable member per millimeter of expansion during about an initial 0.50 mm diametric range of expansion from the nominal diameter and that results in about a −0.10N to about a −0.50N overall reduction in radial force along the length of the expandable member per millimeter of expansion during subsequent diametric ranges of expansion.01-13-2011
20110245908Mandrels Supporting Medical Devices During Processing of the Medical Devices - An apparatus and method for applying a coating composition to a stent. A mandrel for supporting the stent has one or more drive pins and other supporting structure that loosely supports the stent, in an unstable position. The support permits freedom of movement of the stent relative to the mandrel to cause the stent to frequently re-position itself over the mandrel during a spraying process. When a coating composition is applied, the stent randomly or periodically moves about relative to the mandrel due to intermittent contact between the stent and the rotating mandrel and fluidic forces applied through the sprayed coating composition.10-06-2011
20110040370ENDOPROSTHESES FOR PERIPHERAL ARTERIES AND OTHER BODY VESSELS - An endoprostheses for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen includes a plurality of elongate strut members spaced apart and extending along a longitudinal axis, each elongate strut member having a plurality of alternating peaks and valley. At least one flexible connecting link connects each elongate strut member to an adjacent elongate strut member. The elongate strut members and connecting links forming a generally tubular stent body having a first delivery diameter and a second implanted diameter. The positioning of the connecting links along the stent body produces desired stent performance characteristics.02-17-2011
20110046718STENT AND METHOD FOR THE PRODUCTION OF SUCH A STENT - A stent having a tubular lattice structure includes lattice elements, webs (02-24-2011
20110245907Implantable Prosthesis Having Through-Holes - A prosthesis for intraluminal drug delivery can comprise a plurality of interconnected struts and links that form a tubular structure. The struts and links can have luminal surfaces facing radially inward, abluminal surfaces facing radially outward, and side surfaces connecting the luminal surfaces to the abluminal surfaces. At least some of the struts and links have through-holes in the side surfaces. At least some of the through-holes contain a drug, which can be carried in a polymer matrix.10-06-2011
20100249902STENT AND TREATMENT DEVICE FOR TUBULAR ORGAN - The present invention provides a stent and tubular organ treatment device that can flexibly deform according to a curved portion of a tubular organ, contracts less in the longitudinal direction during insertion, and is easy to handle. A stent (09-30-2010
20110213458INTRAVASCULAR STENT - The invention is directed to an expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The invention provides for a an intravascular stent having a plurality of cylindrical rings connected by undulating links. The stent has a high degree of flexibility in the longitudinal direction, yet has adequate vessel wall coverage and radial strength sufficient to hold open an artery or other body lumen.09-01-2011
20120172974STENT - The stent comprises a tubular body comprising a plurality of ring units arranged in the axis direction and bridged by a connecting element. Each of the units comprises a plurality of cells connected with each other, each of the cells having a U-shaped form comprising two linear parts and a circular arc part therebetween, and opening toward one end. The ring units comprise first and second units alternatively arranged and the oppositely disposed cells of the first and second units are only partly bridged by the connecting elements. The shapes of the cells of the first and second units are axisymmetrical about the connecting element. The curvature radius of the top of the arc constituting the arc part is 1.1 and 1.5 times larger than that of each of the tangent circles formed at the edges of two linear parts of the cell on the circular arc part side.07-05-2012
20120245675VASCULAR REMODELING DEVICE - A vascular remodeling device is provided. The device has an anchor portion, sized for deployment in a blood vessel, that is radially expandable from a collapsed state to an expanded state. The device also includes a distal portion sized for deployment in a blood vessel. The distal portion is radially expandable from a collapsed state to an expanded state and has a distal face that is sufficiently occlusive in the distal-to-proximal direction to perform a therapeutic blocking function in an aneurysm neck. The device also has an intermediate portion that interconnects a distal end of the anchor portion and a proximal end of the distal portion. In some embodiments, the anchor portion and/or distal portion has a plurality of interconnected struts.09-27-2012
20100057190Frangible bridge structure for a stent, and stent including such bridge structures - A frangible bridge structure for a stent includes three successive branches, a first of which is connected to one of the stent portions which the bridge structure makes it possible to connect and a second of which is connected to the other of the stent portions which the bridge structure makes it possible to connect, these first and second branches being connected, by two connecting portions, to a third intermediate branch, between the first and second branches, these three branches extending parallel to each other with the longitudinal direction of these branches preferably being oriented perpendicular to the longitudinal direction of the stent, and in immediate proximity to each other.03-04-2010
20100131047Stent Cell Configurations - A generally cylindrical, radially expandable stent may be composed of a plurality of interconnected multibonate cell structures. The cells have three or more enlarged end portions radiating from a common center within the cell. The cells may be of tribonate or higher order multibonate configuration. Stents composed up of a series of generally multibonate cell elements are also disclosed.05-27-2010
20100131044STENT - An expandable stent for use within a body passageway. The stent includes at least two struts and a connector securing together said two struts. At least one of said struts includes an elbow section and an undulating section. The apex of at least one strut can include at least one a dimple, divot and/or slot.05-27-2010
20100131046STENT WITH DRUG COATING WITH VARIABLE RELEASE RATE - A stent is provided with a coating having a variable drug release rate. The release rate can be greater over a curved or bent segment of a strut network as compared to generally linear segments of the strut network. The coating can have a barrier region that is thicker over the generally linear segments. The coating can have a drug mixed with polymers. The curved or bent segment can have a greater amount of a polymer having relatively high drug permeability as compared to the generally linear segments.05-27-2010
20090216312Stent for the Positioning and Anchoring of a Valvular Prosthesis in an Implantation Site in the Heart of a Patient - The present invention relates to a stent for the positioning and anchoring of a valvular prosthesis in an implantation site in the heart of a patient. Specifically, the present invention relates to an expandable stent for an endoprosthesis used in the treatment of a narrowing of a cardiac valve and/or a cardiac valve insufficiency. So as to ensure that no longitudinal displacement of a valvular prosthesis fastened to a stent will occur relative the stent in the implanted state of the stent, even given the peristaltic motion of the heart, the stent according to the invention comprises at least one fastening portion via which the valvular prosthesis is connectable to the stent. The stent further comprises positioning arches and retaining arches, whereby at least one positioning arch is connected to at least one retaining arch via a first connecting web. The stent moreover comprises at least one auxiliary retaining arch which connects the respective arms of the at least one retaining arch connected to the at least one positioning arch.08-27-2009
20100070023BIODEGRADABLE CONNECTORS - An expandable bifurcated stent is formed of a main body and a first branch. The body wall is made up of interconnected stent members that define a plurality of cells, at least one of which is a side opening. The first branch body extends from the body wall from at least two regions adjacent the side opening. At least one stent member adjacent the perimeter is bioabsorbable.03-18-2010
20100070021Stenting Ring with Marker - A stenting ring made of a tube or rolled-up sheet that has a characteristic wall thickness. The ring defines a lumen and is equipped with at least one marker made of a material different from that of the ring. The ring is expansible from a radially compact disposition with a relatively small circumference to a radially expanded disposition with a relatively large circumference. The ring exhibits in the compact disposition a serpentine arrangement of succeeding struts lying in alternate opposite directions to the longitudinal axis of the lumen. The marker has a thickness in the radial direction of the ring that is less than the characteristic wall thickness, and has a width that extends circumferentially around an arc of the ring. The marker is attached to the ring at a zone located at a point intermediate in the extent of said arc. The marker overlaps with a respective one of said struts, at each end of its circumferential arc, when the ring is in the compact disposition, the respective struts moving away from each other, and from the marker, when the ring expands towards said radially expanded disposition.03-18-2010
20110098800AXIALLY ANCHORING COLLAPSIBLE AND RE-EXPANDABLE PROSTHETIC HEART VALVES FOR VARIOUS DISEASE STATES04-28-2011
20100070022LAYER BY LAYER MANUFACTURING OF A STENT - A stent is provided which has a relatively less porous support structure that includes a first set of consolidated particles and at least one relatively more porous reservoir that includes a second set of consolidated particles that differ in composition from the first set of consolidated particles.03-18-2010
20110153002Extendible Stent Apparatus - The present invention concerns novel stent apparatuses for use in treating lesions at or near the bifurcation point in bifurcated cardiac, coronary, renal, peripheral vascular, gastrointestinal, pulmonary, urinary and neurovascular vessels and brain vessels. More particularly, the invention concerns a stent apparatus with at least one side opening which may further comprise an extendable stent portion laterally extending from the side opening and at least partly in registry with the wall of the side opening. Devices constructed in accordance with the invention include, singularly or in combination, a main expandable stent comprising at least one substantially circular side opening located between its proximal and distal end openings, which side opening may further comprise an expandable portion extending radially outward from the edges of the side opening; and a branch stent comprising proximal and distal end openings and which may further comprise a contacting portion at its proximal end, and which may optionally be constructed to form either a perpendicular branch or a non-perpendicular branch when inserted through a side opening of the main stent. The stents of the invention are marked with, or at least partially constructed of, a material which is imageable during intraluminal catheterization techniques, most preferably but not limited to ultrasound and x-ray.06-23-2011
20110251672ASPECT RATIO FOR STENT STRUT DESIGN - An intravascular stent is provided to be implanted in coronary arteries and other body lumens. The stent includes stent struts that have a transverse cross-section that is substantially rectangular and an aspect ratio in the range of 0.9 to 1.0 to 1.4 to 1.0. This range of aspect ratios for the stent struts minimizes out of plane twisting of the struts or projecting edges of the struts when the stent is expanded from a compressed diameter to an expanded diameter in a coronary artery.10-13-2011
20120150279LONGITUDINALLY FLEXIBLE EXPANDABLE STENT - Segmented articulatable stent of open structure comprised of end-connected struts of first and second lengths making up first and second segments with angular interconnects between adjacent first and second segments.06-14-2012
20120150278LONGITUDINALLY FLEXIBLE EXPANDABLE STENT - Segmented articulatable stent of open structure comprised of end-connected struts of first and second lengths making up first and second segments with angular interconnects between adjacent first and second segments.06-14-2012
20110153003STENT WITH FLEXIBLE HINGES - A helical stent includes at least one helical winding. Each helical winding includes a plurality of alternating long struts and short struts, ends of at least some of the long struts being joined to an end of an adjacent short strut by a flexible hinge arrangement, the struts being substantially rigid. The stent also includes at least one interconnection member connecting a hinge arrangement on one turn of the at least one winding with a hinge arrangement on an adjacent turn of the at least one winding. Fewer than all hinge arrangements on the at least one helical winding are connected to other hinge arrangements by an interconnection member.06-23-2011
20120123524Flexible Stent With Improved Axial Strength - A stent comprises a generally cylindrical band having a pattern of alternating first and second struts, the first struts being wider than the second struts, the first and second struts being of substantially the same length.05-17-2012
20120303112STENT - The invention relates to a medical device and a method of using it. The device is a stent which can be percutaneously deliverable with (or on) an endovascular catheter or via other surgical or other techniques and then expanded. The stent is configured to have a central portion defined by “open” cells and at least two end portions, defined by “closed” cells, spaced apart and directly connected to the distal and proximal ends of the central portion of the stent. The stent may also optionally have a covering or a lattice with openings.11-29-2012
20110251673STENT HAVING A BRIDGE STRUCTURE - In a stent intended for implantation in a living body and having a bridge structure in which at least two bridges are coupled to one another at at least one node region on at least one of the bridges near the node region, the section modulus of the bridge varies along the length thereof, and the stresses arising at the node region upon deformation of the stent are distributed in the longitudinal direction of the bridge.10-13-2011
20110257727Expanding Vascular Stent - An expanding vascular stent is disclosed that is inserted into a blood vessel in the human body and expands the blood vessel. The stent is configured in such a way that adjacent rows, each of which is comprised of a plurality of identical cells, are symmetrically arranged, in an out of phase manner. When the stent is expanded in the radial direction, the adjacent rows are expanded in opposite directions, maintaining their linearly symmetrical state. Therefore, the reduction in the length of the stent can be minimized. Since the stent has also a great degree of flexibility, when it is inserted into the blood vessel, it can minimize the damage to the blood vessel wall.10-20-2011
20100262227IMPLANTS HAVING HIGH FATIGUE RESISTANCE, IMPLANT DELIVERY SYSTEMS, AND METHODS OF USE - According to one aspect of the present invention, a fatigue resistant stent comprises a flexible tubular structure having an inside diameter, an outside diameter, and a sidewall therebetween and having apertures extending through the sidewall. According to other aspects of the invention, processes for making a fatigue resistant stent are disclosed. According to further aspects of the invention, delivery systems for a fatigue resistant stent and methods of use are provided.10-14-2010
20110251674EXPANDABLE SLIDE AND LOCK STENT - An expandable slide and lock stent comprises a tubular member that can be expanded from a collapsed state to an expanded state. The tubular member can comprise a reversing helical backbone and at least one rail member extending from the helical backbone in a circumferential direction. The backbone can have at least one engagement element that can be configured to receive a rail member to form the tubular member. In some embodiments, the reversing helical backbone can comprise a plurality of discrete segments having a variable profile and/or wave form.10-13-2011
20120203327INTRALUMENALLY-IMPLANTABLE FRAMES - Implantable frames for use in body passages are provided herein. The implantable frames can include a plurality of hoop members joined by a plurality of longitudinal connecting members to form a tubular frame defining a cylindrical lumen. The plurality of longitudinal connecting members may include first and second longitudinal connecting members joining a first hoop member to a second hoop member such that the first and second longitudinal connecting members extend across an entire space separating the first and second hoop members.08-09-2012
20100004735Polymeric Stent - A strut pattern of an endoprosthesis includes a plurality of W-shape cells that define a tubular body, the W-shaped cells at the opposite ends of the tubular body have a modified configuration that is different than the W-shaped cells at the middle portion of the tubular body. At the distal end of the tubular body, the W-shaped cells have crests with axial positions that are axially spaced apart, and have troughs with circumferential positions that are spaced apart. At the intermediate and distal end of the tubular body, the W-shaped cells crests with axial positions that coincide and have troughs with circumferential positions that coincide. The strut pattern is cut from a tubular precursor construct made of PLLA that has been radially expanded and axially extended by blow molding.01-07-2010
20090143853AXIALLY-RADIALLY NESTED EXPANDABLE DEVICE - Expandable medical implants for maintaining support of a body lumen are disclosed. These implants comprise an axially-radially nested, diametrically expandable, moveable vascular device for enlarging an occluded portion of a vessel. The device can be configured to allow for motion such as translating and/or slide and lock. One advantage of the axially-radially nested stent is that it maintains the expanded size, without significant recoil.06-04-2009
20100324661STENT HAVING HELICAL ELEMENTS - An expandable stent comprised of a plurality of helical segments is disclosed. In one embodiment, the stent is generally cylindrical in shape having a cylindrical axis, and comprises a first and second set of helical segments. The helical segments in the first set are substantially parallel and have a first pitch forming a first helical angle with respect to the cylindrical axis. The helical segments in the second set are also generally parallel to each other and form a second pitch that differs from the first pitch, thereby forming a second helical angle with respect to the cylindrical axis. In an alternative embodiment, the stent comprises one set of helical segments and a plurality of circumferential elements that are joined together by the helical segments to form a plurality of cylindrical elements which are joined together to form a stent body. The stent may also have endzones.12-23-2010
20110054592FLEXIBLE EXPANDABLE STENT AND METHODS OF DEPLOYMENT - A flexible, expandable stent assembly comprises a pattern of interconnected struts along a curvilinear path. The struts define a cylindrically shaped channel that extends along a longitudinal axis. The channel has a plurality of openings. The struts comprise a plurality of circumferential arrays of webs or bends. Each circumferential array is connected to an adjacent circumferential array by fewer than four cross-links. Each cross-link extending from a first side of a circumferential array of the plurality of circumferential arrays is substantially circumferentially offset from every cross-link extending from an opposite side of the same circumferential array. Each of the struts has, in a cross-section generally normal to the curvilinear path of the strut and normal to a center of curvature of the channel, a strut surface width that is at least one and a half times that of a strut surface height of the strut.03-03-2011
20110118822STENT AND METHOD FOR MANUFACTURING THEREOF - According to one aspect of the present disclosure, a method and technique for manufacturing a stent is disclosed. The stent is a non-metallic stent having a furled small-diameter state and an expanded large-diameter state where the stent, in the furled small-diameter state, includes a plurality of central lobes arranged at spaced apart intervals and extending longitudinally defining a stent axis, the plurality of central lobes defining a cylindrical plane of the stent. The stent also includes at least one peripheral lobe formed on at least one of the plurality of central lobes, the peripheral lobe oriented along the cylindrical plane.05-19-2011
20110118821LOW PROFILE NON-SYMMETRICAL STENT - Various stents and stent-graft systems for treatment of medical conditions are disclosed. In one embodiment, an exemplary stent-graft system may be used for endovascular treatment of a thoracic aortic aneurysm. The stent-graft system may comprise proximal and distal components, each comprising a graft having proximal and distal ends, where upon deployment the proximal and distal components at least partially overlap with one another to provide a fluid passageway therebetween. The proximal component may comprise a proximal stent having a plurality of proximal and distal apices connected by a plurality of generally straight portions, where a radius of curvature of at least one of the proximal apices may be greater than the radius of curvature of at least one of the distal apices. The distal component may comprise a proximal z-stent coupled to the graft, where the proximal end of the graft comprises at least scallop formed therein that generally follows the shape of the proximal z-stent. Further, the distal component may comprise at least one z-stent stent coupled to the distal end of the graft and extending distally therefrom that reduces proximal migration of the distal component.05-19-2011
20110125251Self-Expanding Stent with Polygon Transition Zone - The self-expanding stent of the present invention provides for a transition zone between the main body of the stent and the end zone, comprising a plurality of n-sided polygons where the surface area of the adjacent polygons in the transition zone is unequal. In one embodiment, the surface area of the polygons in the transition zone increases circumferentially across the transition zone in a clockwise or counterclockwise manner. The polygons are formed from two pairs of undulations which are connected by segments. The bending moment of the undulations is equal within each polygon and constant across the transition zone.05-26-2011
20100324662STENT HAVING HELICAL ELEMENTS - An expandable stent comprised of a plurality of helical segments is disclosed. In one embodiment, the stent is generally cylindrical in shape having a cylindrical axis, and comprises a first and second set of helical segments. The helical segments in the first set are substantially parallel and have a first pitch forming a first helical angle with respect to the cylindrical axis. The helical segments in the second set are also generally parallel to each other and form a second pitch that differs from the first pitch, thereby forming a second helical angle with respect to the cylindrical axis. In an alternative embodiment, the stent comprises one set of helical segments and a plurality of circumferential elements that are joined together by the helical segments to form a plurality of cylindrical elements which are joined together to form a stent body. The stent may also have endzones.12-23-2010
20100324658FLEXIBLE STENT WITH HINGED CONNECTORS - A composite implantable prosthesis including a scaffold with a plurality of axially spaced apart sections connected by one or more bridges, each bridge including one or more hinges. The material of the bridges is generally distinct from the material of the scaffold.12-23-2010
20100324657LOCKED SEGMENTS PUSHABLE STENT-GRAFT - An implantable prosthesis includes a scaffold with a plurality of expandable segments axially spaced apart along a substrate, adjacent segments connected by one or more support members when the prosthesis is in a collapsed configuration and disconnected when the prosthesis is in an expanded configuration.12-23-2010
20100324660INTRAVASCULAR STENTS - Stent designs for use in vessels, such as the carotid and coronary arteries, are disclosed. The stents consist of a plurality of radially expandable cylindrical elements generally aligned on a common longitudinal stent axis and interconnected by one or more interconnecting members placed so that the stent is flexible in a longitudinal direction. The cylindrical elements form a generally serpentine wave pattern transverse to the longitudinal axis between alternating valley portions and peak portions. The interconnecting members are attached to the double-curved portions to connect a cylindrical element to an adjacent cylindrical element and interconnecting members are attached to the inverted double-curved portions to connect the cylindrical element to the other adjacent cylindrical element.12-23-2010
20100331961STENT WITH IMPROVED STENT DESIGN - An example embodiment of the invention is an expandable stent comprising a tubular base body with a lumen along a longitudinal axis, wherein the base body has a plurality of circumferential support structures which are successively positioned along the longitudinal axis and are each composed of a sequence of diagonal elements and arched elements, and has one or more connectors, wherein two successive circumferential support structures are joined together by at least one connector, and each connector is attached to one diagonal element of the two circumferential support structures to be connected; characterized in that a diagonal element to which a connector is attached has an elongated shape with two opposite ends, i) wherein the diagonal element at its first end has a branching point with a diameter d12-30-2010
20090171446LOW PROFILE STENT WITH FLEXIBLE LINK - The invention provides an improved stent design for repairing vasculature, the stent having rings including struts defining first peaks and second peaks, selected second peaks of adjacent rings being connected by links. The stent design incorporates non-linear links with undulating portions extending generally perpendicular to or circumferentially with respect to a longitudinal axis of the stent and adjacent first peaks with different longitudinal lengths such that stent flexibility is increased without sacrificing stent compression for delivery.07-02-2009
20090171445Electrical Conduction Block Implant Device - The present invention provides an electrical block implant sized and shaped for securement at the perimeter of the pulmonary ostium of the left atrium. By utilizing various expandable ring designs and optional anchoring mechanisms, the present invention causes even, circular scarring around the perimeter of the pulmonary ostium, achieving reliable blocking of aberrant electrical signals responsible for atrial fibrillation.07-02-2009
20090171444Two-Stage Scar Generation for Treating Atrial Fibrillation - The present invention seeks to provide an implant configured to utilize at least two different scar-generating mechanisms that are generated in sequential or overlapping stages. For example, in one embodiment the present invention provides an expandable device that can be positioned at a desired target location within a patient to generate mechanical ablation damage. After a predetermined amount of mechanical ablation has occurred, additional ablation damage is generated by a different source, such as energy delivery, drug delivery, or inflammatory material delivery. In this respect, the overall ablation scarring can be better controlled by utilizing the ablation techniques that are most appropriate at specific phases of a technique or locations within a patient.07-02-2009
20110153001BIODEGRADABLE STENT - A biodegradable stent includes flexible connection units comprising extensions and a base perpendicular thereto. The base includes ring members coupled by links. The extension includes a first end, a ring element at a second end and a hollow double-convex shaped intermediate section. The width of the intermediate section is greater than an inner diameter of each of the ring members and each of the ring elements. The ring elements of the extensions of a first connection unit are inserted through the ring members of the extensions of a second connection unit to assemble the first and second connection units. The connection units are connected and securely joined to form a contracted tubular stent. The base of the second connection unit is superimposed with the second end of the first connection unit. In such a manner the stent is expanded.06-23-2011
20120150280LONGITUDINALLY FLEXIBLE EXPANDABLE STENT - Segmented articulatable stent of open structure comprised of end-connected struts of first and second lengths making up first and second segments with angular interconnects between adjacent first and second segments.06-14-2012
20110190873Stent - A stent with strut bands and connectors, wherein the strut bands have long and short struts with a junction positioned between the short struts. Each junction defines a reservoir, wherein the reservoirs of a strut band are substantially circumferentially aligned. The connectors each have arms, wherein each arm includes an opposing U-shaped link. The opposing links have a shared portion disposed between a peak on one strut band and a longitudinally adjacent trough of an adjacent strut band.08-04-2011
20110190872Crush Recoverable Polymer Scaffolds Having a Low Crossing Profile - A medical device includes a polymer scaffold crimped to a catheter having an expansion balloon. The scaffold, after being deployed by the balloon, provides a crush recovery of about 90% after the diameter of the scaffold has been pinched or crushed by 50%. The scaffold also has a reduced crimped profile and a modification of the scaffold's ring structure at the crowns that contributes to the reduced crimped profile.08-04-2011
20100016951STENT - A stent for securing a passageway of a body lumen in a constricted portion of the body lumen is disclosed. The stent includes a first cylindrical band body formed in a zigzag shape having a plurality of straight sections interconnected by first peaks and first valleys and having opposite ends that are integrally formed, a second cylindrical band body having a same structure as the first cylindrical band body, the second cylindrical band body being disposed such that second valleys of the second cylindrical band body face the respective first peaks of the first cylindrical band body and second peaks of the second cylindrical band body face the respective first valleys of the first cylindrical band body with a plurality of predetermined gaps of a first row, thereby defining a plurality of rhombus spaces of a first row, at least one first link member that is provided in at least one rhombus spaces of the first row to interconnect the first and second band bodies, at least one second link members that are provided in at least one rhombus spaces of the second row to interconnect the second and third band bodies.01-21-2010
20090319026Composite Stent with Reservoirs for Drug Delivery and Methods of Manufacturing - A composite stent structure and methods of manufacturing same, include a stent wall having two or more layers of the same or different material. The wall provides various means of drug delivery while maintaining the stent's overall structure. The outer layers and/or inner layers may have holes, reservoirs, or openings that allow for the delivery of drugs or other therapeutic agents.12-24-2009
20090210049Peripheral overlap stent - A peripheral stent with individual segments reduces the occurrence of fatigue fracture failure seen in vessels and tubes having bending and twisting movement. Segments can be attached via connecting fibers that biodegrade and offer the segments freedom of movement. The segments are balloon-expandable but will not be crushed by external forces placed upon the stent. Hinges and struts provide the stent with a plastic deformation during expansion and remain elastic if exposed to an oval shape. The segments overlap each other to provide improved scaffolding of the vessel wall and a greater flexibility during delivery. A composite stent having both balloon-expandable and self-expanding character has application in the venous system.08-20-2009
20100131045STENT DESIGNS, MATERIALS AND PROCESSING METHODS - Stents and methods for design, usage and manufacture, using novel materials and designs, for example, high yield strength, low Young modulus, cold worked and/or with low elongation requirements.05-27-2010
20110307050Laser System And Processing Conditions For Manufacturing Bioabsorbable Stents - The present invention involves laser machining polymer substrates to form a stent with laser parameters that minimize damage to the substrate in a surface region adjacent to the machined edge surface. The wavelength and pulse width are selected for this unique application and they can be controlled to minimize the surface modifications (such as voids, cracks which are induced by the laser-material interaction) which contribute to the variation in mechanical properties with distance from the edge surface, bulk mechanical properties, or a combination thereof.12-15-2011
20090292350Stents for Prosthetic Heart Valves - A stented valve including a stent structure including a generally tubular body portion having a first end, a second end, an interior area, a longitudinal axis, and a plurality of vertical wires extending generally parallel to the longitudinal axis around a periphery of the body portion, wherein the plurality of vertical wires includes multiple commissure wires and at least one structural wire positioned between adjacent commissure wires, and a plurality of V-shaped wire structures having a first end, a second end, and a peak between the first and second ends, wherein a first end of each V-shaped structure extends from a first vertical wire and a second end of each V-shaped structure extends from a second vertical wire that is adjacent to the first vertical wire, wherein each V-shaped structure is oriented so that its peak is facing in the same direction relative to the first and second ends of the body portion, and a valve structure including a plurality of leaflets attached to the stent structure within the tubular body portion.11-26-2009
20120041543STENT HAVING CIRCUMFERENTIALLY DEFORMABLE STENTS - Disclosed is a method of treating a bodily lumen with a stent, the method comprising: disposing a stent within a bodily lumen, the stent comprising a plurality of deformable struts that are substantially circumferentially aligned and are configured to selectively deform in a circumferential direction in localized regions in the struts upon application of an outward radial force; and expanding the stent by applying the outward radial force, wherein the outward radial force causes selective deformation of the deformable struts in a localized region in the struts.02-16-2012
20090062905DYNAMIC STENT03-05-2009
20110071617Stent With Improved Flexibility - A stent includes a continuous wave form wrapped around a longitudinal axis of the stent at a pitch to define a helix comprising a plurality of turns. The wave form includes a plurality of struts and a plurality of crowns. Each crown connects adjacent struts within a turn to define the continuous wave form. The stent also includes a plurality of connections configured to connect selected crowns of adjacent turns. Unconnected crowns of adjacent turns that substantially face each other are spaced from each other and define a gap therebetween. The gap between the unconnected crowns of adjacent turns is variable around a circumference of the stent.03-24-2011
20110071616Stent Including a Toggle Lock Strut - A tubular stent includes cylindrical rings disposed adjacent to each other and coupled to each other by a plurality of longitudinal segments. Each cylindrical ring includes circumferentially oriented toggle lock struts. The toggle lock struts include a first arm and a second arm coupled together at an elbow. When the stent is in a compressed configuration for delivery, the toggle lock struts are bent at the elbow such that the first arm is disposed at an angle of less than 180 degrees relative to the second arm. Upon radial expansion of the stent, the toggle lock struts are unbent to a straight configuration and permitted to relax slightly beyond the straight configuration to a locked configuration such that the angle between the first arm and the second arm changes from less than 180 degrees to more than 180 degrees.03-24-2011
20110071620Methods for Forming an Orthogonal End on a Helical Stent - A method of manufacturing a stent includes forming a wave form having a plurality of struts and a plurality of crowns. Each crown connects two adjacent struts. The wave form has a central portion and two end portions located on opposite sides the central portion. Some of the struts located in the end portions have lengths longer and/or shorter than an average length of all of the struts of the wave form. The method includes wrapping the wave form about a longitudinal axis to define a plurality of turns so that an end turn is oriented at an angle relative to the longitudinal axis, a second turn is at a first pitch angle that is less than the angle that the end turn is disposed relative to the longitudinal axis, a third turn is at a second pitch angle that is less than the first pitch angle, and a fourth turn is at a third pitch angle that is less than the second pitch angle.03-24-2011
20110071619Stent With Constant Stiffness Along the Length of the Stent - A stent includes a wave form that includes a plurality of struts and a plurality of crowns. Each crown connects two adjacent struts within the wave form. The wave form is wrapped around a longitudinal axis at a pitch angle to define a plurality of turns and has a central portion and two end portions located on opposite sides of the central portion. At least some of the struts located in the end portions have lengths longer than an average length of all of the struts of the wave form. The stent also includes a plurality of connections. Each connection connects selected crowns from adjacent turns. The connections are positioned along the stent substantially equally so that a density of the number of connections of the end portions is substantially equal to a density of the number of connections of the central portion.03-24-2011
20110071618Helical Stent With Connections - A stent includes a continuous wave form wrapped around a longitudinal axis of the stent at a first pitch angle to define a first helix comprising a plurality of turns. The wave form includes a plurality of struts and a plurality of crowns. Each crown connects adjacent struts within a turn to define the continuous wave form. The stent also includes a plurality of connections configured to connect selected crowns of adjacent turns so that when the stent is in an unexpanded condition, the plurality of connections are aligned at a second pitch angle to define a second helix, and when the stent is in an expanded condition, at least some of the connections align along a substantially straight line parallel to the longitudinal axis of the stent.03-24-2011
20120041542IMPLANT WITH ATTACHED ELEMENT AND METHOD OF MAKING SUCH AN IMPLANT - A tubular implant having an axial end to which is attached a ring of spoons of a material different from that of the implant. In another aspect, the invention provides a method of attaching elements to an axial end of a tubular implant comprising the steps of providing said elements on one end of a support tube having a radius substantially that of the implant in its unexpanded configuration, abutting the implant and elements end-to-end, fixing the elements to the implant, and parting the elements from the support tube. In a third aspect, the invention provides an implant carrying an element of another material, the element and implant having complementary tapered mating surfaces for achieving a taper form-fit of the element onto the implant.02-16-2012
20120078345LONGITUDINALLY FLEXIBLE EXPANDABLE STENT - Segmented articulatable stent of open structure comprised of end-connected struts of first and second lengths making up first and second segments with angular interconnects between adjacent first and second segments.03-29-2012
20120004719Stent Configurations - A stent may comprise a plurality of serpentine bands, wherein adjacent serpentine bands are connected by at least one connector strut. A serpentine band may comprise alternating straight struts and s-shaped struts. Connector struts may comprise first connector struts and second connector struts, wherein the first connector struts are nonparallel to the second connector struts.01-05-2012
20110098801STENT WITH A BIO-RESORBABLE CONNECTOR - A helical stent having bio-resorbable connecting members connecting sections of the stent. The connecting members provide various spring rates or spring constants to the stent, and permit a change in the flexibility of the stent subsequent to implantation while maintaining the unitary design of the stent.04-28-2011
20120065724Intravascular Stent - A stent in a non-expanded state has a first and second expansion column, each consisting of a plurality of expansion strut pairs. An expansion strut pair includes a first expansion strut, a second expansion strut and a joining strut that couples the first and second expansion struts at one end. Expansion strut pairs include expansion strut pair first and second corners formed where the joining strut couples the first and second expansion struts. A connecting strut column, formed of a plurality of connecting struts couples the first and second expansion columns. Connecting struts include a proximal section, a distal section and an intermediate section. The proximal section is coupled to the corner of an expansion strut pair of the first expansion column, and the distal section is coupled to the joining strut of an expansion strut pair of the second expansion column intermediate the expansion strut pair first corner and the expansion strut pair second corner.03-15-2012
20110166642Stent Configurations - The invention is directed to an expandable stent which is longitudinally flexible in both the unexpanded and expanded conditions. The stent includes spiral structures which at least partially unwind upon expansion of the stent to limit stent recoil. Regions of low strain in the stent during expansion are provided by the spiral structures.07-07-2011
20110166641HIGHLY FLEXIBLE STENT AND METHOD OF MANUFACTURE - Preferred embodiments of a stent with a high degree of flexibility are shown and described. The stent can include a continuous helical winding having interconnected struts joined at vertices, and having bridges connecting sections of the helical winding to each other. An annular ring can be provided at one or both ends of the helical winding, and the annular ring can have extensions extending to connect to the helical winding. One of the extensions can connect to a bridge and another extension can connect to a vertex. The struts at the ends of the helical winding can have strut lengths that differ from the strut lengths of the struts Po. in a central portion of the winding between the ends of the winding.07-07-2011
20120016462Stent - A stent comprises a plurality of circumferential bands. Circumferential bands which are adjacent one another are connected one to the other. The circumferential bands include peaks and troughs interconnected by bent struts. The bands may overlap or may be connected by connectors.01-19-2012
20120022637VASCULAR IMPLANT - A medical implant (01-26-2012
20120059453ENDOPROSTHESIS FOR CONTROLLED CONTRACTION AND EXPANSION - Endoprosthesis including a plurality of annular elements, each annular element connected to an adjacent annular element at least one connection location, is provided. Each annular element includes an interconnected series of strut members, at least one strut member connected to a first circumferentially adjacent strut member at a first longitudinal apex and to a second circumferentially adjacent strut member at a second longitudinal apex. The at least one strut member includes a first end portion at a first end of the strut member, the first end extending to the first apex, an intermediate portion hingedly connected to the first end portion, and a second end portion hingedly connected to the intermediate portion and extending to the second apex. The endoprosthesis has a delivery diameter when in a delivery condition and a deployed diameter when in a deployed condition.03-08-2012
20120158125STENT HAVING EXPANDABLE ELEMENTS - A medical implant for the expansion and support of a body vessel is formed as elongate struts in a shape of a tube. The struts are plastically deformable at least in sections so that the implant remains permanently expanded in the radial direction transversely to a longitudinal axis of the struts in the expanded state. A course of the expandable element has a plurality of direction changes with respect to the longitudinal axis. The expandable element has a constriction point in the contracted state designed as an intended breaking point for the expandable element. The constriction point breaks upon application of excessive force applied in the radial direction preventing further expansion of the expandable element.06-21-2012
20120071962INTRAVASCULAR STENT - Stents are provided with scaffold structures which have low exposures when implanted in arteries and other blood vessels and lumens. The cross-sectional dimensions, materials, and patterns are controlled to provide sufficient strength and coverage while maintaining the low exposure.03-22-2012
20120071964MEDICAL IMPLANT AND METHOD FOR PRODUCING MEDICAL IMPLANT - The invention relates to a medical implant, particularly a stent, having a wall (03-22-2012
20120071963EXPANDABLE MEDICAL DEVICE FOR DELIVERY OF BENEFICIAL AGENT - An expandable medical device having a plurality of elongated struts, the plurality of elongated struts being joined together to form a substantially cylindrical device which is expandable from a cylinder having a first diameter to a cylinder having a second diameter, and the plurality of struts each having a strut width in a circumferential direction. At least one of the plurality of struts includes at least one opening extending at least partially through a thickness of said strut. A beneficial agent may be loaded into the opening within the strut. The expandable medical device may further include a plurality of ductile hinges formed between the elongated struts, the ductile hinges allowing the cylindrical device to be expanded or compressed from the first diameter to the second diameter by deformation of the ductile hinges.03-22-2012
20120071961Stent With Hollow Drug-Eluting Elements - A stent includes a plurality of cylindrical elements joined along a common longitudinal axis to form a tube. The cylindrical elements include struts joined by crowns. Hollow, drug-eluting elements are disposed between adjacent cylindrical elements and connect adjacent cylindrical elements to each other. A therapeutic substance fills the lumen of the drug-eluting elements, and openings in the walls of the drug-eluting elements allow elution of therapeutic substance from the lumen for treatment of a vessel.03-22-2012
20110066225Bioabsorbable Stent With Time Dependent Structure And Properties And Regio-Selective Degradation - A bioabsorbable polymeric stent with time dependent structure and properties and methods of treating a diseased blood vessel with the bioabsorable polymeric stent are disclosed. The structure and properties of the stent change with time and allow the vessel to be restored to a natural unstented state. The bioabsorbable stent loses mechanical integrity in a controlled manner due to modification of selected structural elements.03-17-2011
20110106238INTRALUMINAL DEVICE WITH IMPROVED FLEXIBILITY AND DURABILITY - In accordance with the present invention, there is provided a stent for insertion into a vessel of a patient. The stent is a tubular member having front and back open ends and a longitudinal axis extending there between. The tubular member has a first smaller diameter for insertion into a patient and navigation through the vessels, and a second larger diameter for deployment into the target area of a vessel. The tubular member is made from a plurality of adjacent hoops extending between the front and back ends. The hoops include a plurality of longitudinal struts and a plurality of loops connecting adjacent struts. The stent further includes a plurality of bridges having loop to bridge connections which connect adjacent hoops to one another. The bridge to loop connection points are separated angularly with respect to the longitudinal axis. The bridges have one end attached to a loop, another end attached to a loop on an adjacent hoop. The connection point between the bridge and the hoops will have a repeating pattern over a plurality of strut apices such that the benefits of a decreased number of bridges is realized while simultaneously avoiding the creation of overly unconstrained hoops. It is preferred that the ratio of total number of circumferentially aligned loops to the number of loops spanned by a particular bridge be a whole number.05-05-2011
20100094405Bioabsorbable Polymeric Medical Device - In embodiments there is described a cardiovascular tube-shaped lockable and expandable bioabsorbable scaffold having a low immunogenicity manufactured from a crystallizable bioabsorbable polymer composition or blend.04-15-2010
20100249903STENT - A radially expansible annular stent is disclosed. The stent comprises a plurality of stenting turns around a lumen centred on a longitudinal axis. Adjacent turns of the stent are joined by connector struts. The stent annulus has a wall thickness related to the material from which it is formed. The radial thickness of the connector struts is smaller than that of the stent annulus. A method of making such a stent is also disclosed. The method includes cutting the connector struts from a tubular workpiece with a laser beam. The laser beam is aimed so as to be offset from a longitudinal axis of the workpiece to provide the reduced radial thickness of the connector struts.09-30-2010
20120221097CIRCUMFERENTIALLY NESTED EXPANDABLE DEVICE - Expandable medical implants for maintaining support of a body lumen are disclosed. Some embodiments of these implants comprise a circumferentially nested, diametrically expandable, moveable vascular device for enlarging an occluded portion of a vessel. The device can be configured to allow for motion such as rotating, translating, and/or slide and lock.08-30-2012
20120165920Stent - An expandable medical framework for implantation in a mammalian body comprises a plurality of serpentine bands and connector columns. Each serpentine band comprises alternating straight band struts and turns. Each connector column comprises a plurality of connector struts and connects adjacent serpentine bands. The turns of a serpentine band comprise connected turns and unconnected turns, each connected turn having a connector strut extending therefrom. Each unconnected turn has no connector struts extending therefrom. The serpentine bands at the ends of the framework are each connected to an intermediate serpentine band via four or more connector struts which are equally spaced about the circumference of the expandable medical framework. Each two adjacent intermediate serpentine bands is connected one to the other via two connector struts which are equally spaced about the circumference of the expandable medical framework.06-28-2012
20120165921FLEXIBLE STENT WITH TORQUE-ABSORBING CONNECTORS - The present invention concerns a stent with a highly flexible structure that is configured to provide an elevated degree of vessel scaffolding and to absorb torque applied on the stent. In one embodiment, the stent of the present invention includes an essentially tubular body formed by a web structure that is composed of a plurality of longitudinally adjacent web rings, each including a plurality of web elements that are disposed circumferentially around the longitudinal axis of the stent and that are adjoined one to the other by a junction bend. Each junction bend in a first web ring is coupled to another junction bend in a neighboring ring by a connector having a step-wise configuration, in which a central segment of the connector is disposed essentially parallel to the longitudinal axis of the stent and may become twisted to absorb torque imposed on the stent.06-28-2012
20080262599Stent - A stent for insertion in a fluid conduit of a human or animal body includes a hollow structure having generally circumferentially extending parts which have opposite end portions in the longitudinal direction. The circumferential parts are joined to a longitudinally adjacent circumferential parts along the length of the hollow structure wherein the end portions of adjacent circumferential parts are not in parallel planes and/or the end portions of the same part are not in parallel planes. Also, the non-parallel end portions are arranged along the length of the hollow structure such that a flow lumen defined by the hollow structure, and imposed on the flow lumen by the hollow structure when in the fluid conduit, follows a non-planar curve.10-23-2008
20120083873EXPANDABLE MEDICAL DEVICE WITH DUCTILE HINGES - An expandable tissue supporting device employs ductile hinges at selected points. When expansion forces are applied to the device as a whole, the ductile hinges concentrate expansion stresses and strains in small well defined areas. The expandable medical device including ductile hinges provides the advantages of low expansion force requirements, relatively thick walls which are radio-opaque, improved crimping properties, high crush strength, reduced elastic recoil after implantation, and control of strain to a desired level. The expandable tissue supporting device includes a plurality of elongated beams arranged in a cylindrical device and connected together by a plurality of ductile hinges. The ductile hinges can have a substantially constant hinge cross sectional area which is smaller than a beam cross sectional area such that as the device is expanded from a first diameter to a second diameter, the ductile hinges experience plastic deformation while the beams are not plastically deformed.04-05-2012
20100204780FLEXIBLE EXTENDABLE STENT AND METHODS OF SURFACE MODIFICATION THEREFOR - Stent strut and surface geometries are provided for enhancing surface coating applications while providing highly beneficial biomechanical properties. A low-profile, flexible, expandable, elongated, stent assembly is provided and defined by a structure of connected circumferential arrays of webs or bends, the webs or bends and their connections having limited degrees of curvature that help avoid interference during various surface-modifying and surface-enhancing processes.08-12-2010
20120136428Helical Stent Design - An expandable tubular reinforcing member used for body lumens such as blood vessels, the reinforcing member being formed of a continuous elongated helical element comprised of spaced undulating portions forming end loop portions and including a plurality of curvilinear connector elements extending between and interconnecting at least some of the adjacent undulating portions of the helical element over its length.05-31-2012
20110184507MULTI-SECTION STENT - A multi-section tubular device suitable for use as a stent is provided. The multisection tubular device includes a first tubular section (07-28-2011
20110184506VASCULAR STENT - A vascular stent to be implanted in a vessel of a living body to scaffold the vessel from inside is provided. The stent includes a tubular body formed by assembling a plurality of tubular-body forming elements constituting a part of a tubular body. The tubular-body forming elements are formed by bending a strand made of a biodegradable polymer such that legs as linear parts and bend parts alternate in sequence, to form a single flow channel from one end to the other end. The plurality of tubular-body forming elements constitute the tubular body by connecting and unifying two connecting members by melt welding, each of the connecting members being attached to adjacent portions of the plurality of tubular-body forming elements.07-28-2011
20100174358Multi-Segment Modular Stent And Methods For Manufacturing Stents - A modular stent comprises at least one stent module including an intermediate segment consisting of one of either a closed-cell segment or a Z-segment and a pair of end segments connected to respective longitudinal ends of said intermediate segment, each end segment consisting of the other of said closed-cell segment or Z-segment, each closed-cell segment consisting solely of at least one annular closed-cell ring and each Z-segment consisting solely of at least one annular Z-ring. A method of manufacturing a stent form a small diameter tube includes laser-cutting the small diameter tube to define a plurality of longitudinally adjacent Z-rings, providing interconnector portions of said tube integrally joining facing aligned or offset Z-rings, expanding the small diameter tube, and removing predetermined interconnector portions from the expanded tube to provide the predetermined desired arrangement of interconnected closed-cell rings and Z-rings.07-08-2010
20120179241STENT SEGMENTS AXIALLY CONNECTED BY THIN FILM - In accordance with the present invention, there is provided a stent for insertion into a vessel of a patient. The stent has a front and back open ends and a longitudinal axis extending therebetween. The stent has a plurality of adjacent hoops that are held in alignment with the longitudinal axis between the front and back open ends by a thin film tube. The hoops are attached to either the inner or outer surface of the thin film tube. The stent is compressed into a first smaller diameter for insertion into the vessel with a delivery tube and a second larger diameter for deployment into the vessel. The inventive stent can be retracted into the delivery tube if it is improperly deployed.07-12-2012
20100049304Endoprosthesis Having Foot Extensions - Endoprosthesis, such as a stent, includes at least one annular element defined by a first set of strut members interconnected to define apices proximate opposite sides of the annular element. The annular element further includes a foot extension extending between at least one pair of circumferentially-adjacent strut members. The foot extension has first and second foot portions extending circumferentially from corresponding ends of the circumferentially-adjacent strut members, and are contoured to provide at least two areas of flexure. The first and second foot portions are joined at a toe portion of the foot extension, and define a circumferentially-directed apex between the pair of circumferentially-adjacent strut members. Preferably, at least one or more additional annular elements, each defined by interconnected strut members, are provided. The annular elements are generally expandable between a delivery configuration and a deployed configuration. The annular elements are longitudinally aligned and connected at connection locations with connectors, wherein at least one of the connectors is constructed of a bio-absorbable material.02-25-2010
20100049303MEDICAL DEVICE FOR TREATING A HEART VALVE INSUFFICIENCY - A medical device for treating a heart valve insufficiency, with an endoprosthesis which can be introduced into a patient's body and expanded to secure a heart valve prosthesis in the patient's aorta. In an embodiment, the endoprosthesis has at plurality of positioning arches configured to be positioned with respect to a patient's aorta and a plurality of retaining arches to support a heart valve prosthesis. The endoprosthesis includes a first collapsed mode during the process of introducing it into the patient's body and a second expanded mode when it is implanted.02-25-2010
20100298926CYLINDRICALLY-SHAPED ELEMENT FOR LUMINAL STENT, AND LUMINAL STENT - A cylindrically-shaped element forming a luminal stent includes a cylindrical body including a strand of a biodegradable polymer. The strand is repeatedly bent such that linear parts and bend parts alternate in sequence, and ends of the strand are connected together to form a cylindrical shape. Both ends of the strand constituting the cylindrically-shaped elements are connected together by a cylindrical connecting member of a biodegradable polymer holding both ends.11-25-2010
20100274349Stents with High Radial Strength and Methods of Manufacturing Same - Polymeric stents having fracture toughness and resistance to recoil after deployment are disclosed along with methods of manufacturing such stents. Improvements to mechanical characteristics and other improvements may be achieved by having polymer chains within individual stent struts oriented in a direction that is closer to or in line with the axis of the individual stent struts. The struts are connected to each other by hinge elements that are configured to bend during crimping and deployment of the stent. The hinge elements may be tangent or non-tangent to the adjoining struts so as to form W-shaped closed cells arranged in an offset brick pattern in which the size each W-shaped closed cell can be defined in part by a curvilinear length that is approximately 4.5 mm, which allows the stent to be crimped down to an OD of about 1.3 mm and expanded to an OD of at least about 3.5 mm.10-28-2010
20120179239VASCULAR PROSTHESIS CONNECTING STENT - An expandable vascular stent includes an m 3 n array of ovals formed in a cylinder, m being the number of columns of ovals in the circumferential direction and n being the number of rows of ovals in the axial direction, and a plurality of prongs extending inwardly from the outer ends of respective ovals in rows 1 and n of the m 3 n array, and being arranged in facing pairs extending from axially-aligned ovals. The cylinder is expandable from an initial diameter to a pre-determined final diameter, wherein an increase in the diameter of the stent results in a substantial decrease in the length of the stent. The tube and the prongs can be made of surgical stainless steel, the tube being expandable using an angioplasty balloon; or the tube and the prongs can be made of a memory metal and the tube is self-expanding.07-12-2012
20100010621STENT HAVING BIODEGRADABLE STENT STRUTS AND DRUG DEPOTS - A stent comprising stent struts (01-14-2010
20100010620Stent - A stent has a circumference and a plurality of members that define a lumen. The stent has three stable states, which include an unexpanded state, a partially deployed state, and a deployed state The lumen has a first cross-sectional shape in the unexpanded state, a second cross-sectional shape in the partially deployed state and a third cross-sectional shape in the deployed state The first cross-sectional shape of the lumen is different from the second and third cross-sectional shapes of the lumen, and the first cross-sectional shape of the lumen is a non-round shaped cross-sectional shape01-14-2010
20100010618Overlapping Stent - A stent defines a plurality of holes with a therapeutic agent deposited therein and has a plurality of members where at least some of the members overlap when the stent is in the unexpanded state01-14-2010
20110106239STENT AND STENT DELIVERY DEVICE - A stent has a plurality of wavy annular members arranged adjacently to each other in an axial direction of the stent, with the adjacent wavy annular members connected with each other. Each of the wavy annular members has a plurality of one-end side bent portions each having an apex at one-end side of the stent in an axial direction thereof and a plurality of other-end side bent portions each having an apex at the other-end side of the stent in the axial direction thereof. An apex of each of the one-end side bent portions of each wavy annular member penetrates into a space formed between the adjacent other-end side bent portions of one of the adjacent wavy annular members. An apex of each of the other-end side bent portions of each wavy annular member penetrates into a space formed between the adjacent one-end side bent portions of the other of the adjacent wavy annular members. The apex of the one-end side bent portion of each wavy annular member and the apex of the other-end side bent portion of the adjacent wavy annular member curve in an approach direction, thus engaging each other.05-05-2011
20090248137EXPANDABLE STENT - An expandable stent comprising a tubular body made up of a plurality of separated tubular elements (10-01-2009
20100241216STENTS FOR ANGIOPLASTY - A stent has a substantially tubular body defining a longitudinal axis including first and second adjacent annular segments, each segment defining a substantially sinusoidal shape having a plurality of peaks and valleys, the peaks of the first segment extending toward the second segment and being aligned longitudinally with the valleys of the second segment. A plurality of bridge elements interconnect the annular segments. Each bridge element has a U-shaped portion between first and second connector arms, the first connector arm of one bridge element being connected between a first peak and a first valley of the first segment and the second connector arm of the one bridge element being connected between a first peak and a first valley of the second segment.09-23-2010
20120271407STENT SYSTEM HAVING INTERLOCKING SIDE EXTENSION MEMBERS - Devices, systems and methods are provided for performing intra-lumenal medical procedures in a desired area of the body. Stents, stent delivery devices and methods of performing medical procedures to redirect and or re-establish the intravascular flow of blood are provided for the treatment of hemorrhagic and ischemic disease states.10-25-2012
20120191178VASCULAR IMPLANTS AND METHODS - The present invention is directed to vascular implants and methods for fabricating the same. The implantable devices include but are not limited to stents, grafts and stent grafts. In many embodiments, the devices include one or more side branch lumens interconnected with the main lumen.07-26-2012
20120191177Tubular Helical Stent With Rotatable Connections and Method of Making - A tubular stent includes a plurality of bands aligned generally along a common longitudinal axis. A first band has a plurality of first crowns and a second band adjacent to the first band has a plurality of second crowns. A connecting ring connects the first band to the second band, wherein one of the first crowns is rotatably disposed through a lumen of the connecting ring and one of the second crowns is fused to the wall of the connecting ring outside of the lumen of the connecting ring. Methods of making tubular stents with rotatable connections are also disclosed.07-26-2012
20130172983Stent with Anti-Migration Features - A stent has a first end region, a middle region, and a second end region, each region including a plurality of strut columns. The stent includes at least one barb. Each barb in an expanded state is at an angle relative to the outer surface of the stent.07-04-2013
20080319531FLEXIBLE AND EXPANDABLE STENT - In one embodiment of the invention, a stent may be provided comprising a first undulating band having alternating peaks and troughs, a second undulating band having alternating peaks and troughs, a first substantially longitudinal connector extending between the first and second undulating bands and a second very short connector extending between the first and second undulating bands, the first connector substantially longer than the second very short connector.12-25-2008
20100324659STENT HAVING IMPROVED STENT DESIGN - A stent is provided having a base body circumscribing a cylindrical shape and radially expandable from a contracted starting position into a dilated support position, including a plurality of meander-shaped struts disposed in the circumferential direction and arrayed on one another in the axial direction, each strut being meander-shaped in its coarse structure and made of a flexible material, and at least one axial connector in the axial direction, connecting the meander-shaped struts of two axially adjacent meandering curves, wherein the at least one axial connector connects the inside radius of a zenith point of a first meandering curve with a second meandering curve, characterized in that the at least one axial connector at the inside radius of the zenith point of the first meandering curve has an at least double-arm structure.12-23-2010
20080300674Intravascular Stent - A stent comprises a first expansion strut column of first expansion strut pairs and a second expansion strut column of second expansion strut pairs. Each first expansion strut pair is connected to a second expansion strut pair by a connecting strut. Each connecting strut comprises at least one wrap portion, the at least one wrap portion being at least partially wrapped about at least one of the first joining portions of at least one of the first expansion strut column and the second expansion strut column.12-04-2008
20110004293ENDOVASCULAR PLATFORMS FOR THE DIFFERENTIAL TARGETING OF MOLECULES TO VESSEL WALL AND VESSEL LUMEN - A drug delivering medical system intended for placement into a blood vessel is provided. The drug delivering medical system includes a stent device having a plurality of interconnected distinct strut elements comprising distinct strut element surfaces. At least some of the distinct strut surfaces are neither in contact with the lumen wall nor in contact with wall-contacting flow recirculation zones. The stent device releases at least one biologically active compound intended for distal delivery and provides sufficient surface area for delivering the required drug dose to a distal tissue.01-06-2011
20110004292OSTIUM SUPPORT FOR TREATING VASCULAR BIFURCATIONS - A prosthesis is disclosed for placement across an ostium opening from a main body lumen to a branch body lumen. The prosthesis comprises a radially expansible support at one end, a circumferentially extending link at the other end and at least one frond extending axially therebetween.01-06-2011
20110004291OSTIUM SUPPORT FOR TREATING VASCULAR BIFURCATIONS - A prosthesis is disclosed for placement across an ostium opening from a main body lumen to a branch body lumen. The prosthesis comprises a radially expansible support at one end, a circumferentially extending link at the other end and at least one frond extending axially therebetween. The circumferential link can comprise a catheter securement portion and a frond engagement portion.01-06-2011
20110004290HIGHLY FLEXIBLE STENT AND METHOD OF MANUFACTURE - Preferred embodiments of a stent with a high degree of flexibility are shown and described. The stent can include a continuous helical winding having interconnected struts joined at vertices, and having bridges connecting sections of the helical winding to each other. An annular ring can be provided at one or both ends of the helical winding, and the annular ring can have five extensions extending to connect to the helical winding. One of the extensions can connect to a bridge and another extension can connect to a vertex. The struts at the ends of the helical winding can have strut lengths that differ from the strut lengths of the struts in a central portion of the winding between the ends of the winding.01-06-2011
20120239136FLEXIBLE INTRALUMINAL STENT - A stent comprising: at least one individual closed hoop member formed from a resilient material, the hoop, in a two dimensional configuration, having a diametral dimension that exceeds the diameter of the largest blood vessel into which it will be inserted; and the hoop being resiliency deformable or resiliency deformed so as to occupy a spatial envelope of reduced diameter when inserted in a lumen, wherein when occupying the spatial envelope of reduced diameter, the closed hoop member has at least two substantially diametrically-opposed generally circumferentially extending regions; and at least two regions that extend at least in part generally axially relative to the generally circumferentially extending regions, each of said regions that extend at least in part generally axially being disposed between two of said generally circumferentially extending regions.09-20-2012
20120239137DEFFERENTIAL DILATION STENT AND METHOD OF USE - Embodiments herein provide differential dilation stents for use in percutaneous interventions, such as transluminal bypass procedures. In some embodiments, the stents may be used in the process of creating an arteriovenous (AV) fistula during a percutaneous bypass procedure, and such stents may have two or more specialized regions that are configured to adopt a predetermined diameter, shape, and/or tensile strength upon insertion in order to suit the needs of the vessel or procedure. The disclosed stents may be used for creating and/or maintaining an arterial/venous fistula for bypass of an occlusion in a cardiac artery using a cardiac vein, or the femoral artery, for example using the tibial or popliteal vein.09-20-2012
20120265292STENT - A radially expandable stent comprising a plurality of spaced band-like elements and intersecting links is disclosed. The band-like elements have a generally serpentine configuration to provide continuous waves of generally sinusoidal character to each band-like element. The waves are characterized by a plurality of peaks and troughs taking a generally longitudinal direction along the cylinder such that the waves in the band-like elements open as the stent is expanded from a first diameter to a second diameter. The intersecting links are substantially U-shaped and terminate in first and second shanks. The first shank of a link emanates from a region between a peak and trough on a band-like element and the second shank of the link emanates from a region between a peak and trough on an adjacent band-like element.10-18-2012
20120265293STENT SYSTEM HAVING INTERMESHING SIDE EXTENSION MEMBERS - Devices, systems and methods are provided for performing intra-lumenal medical procedures in a desired area of the body. Stents, stent delivery devices and methods of performing medical procedures to redirect and or re-establish the intravascular flow of blood are provided for the treatment of hemorrhagic and ischemic disease states.10-18-2012
20120265291MANUFACTURE OF FINE-GRAINED MATERIAL FOR USE IN MEDICAL DEVICES - Medical devices are manufactured from fine grained materials, processed from of a variety of metals and alloys, such as stainless steel, cobalt-chromium and nickel-titanium alloys. A fine grained metal or alloy is formed from a specimen rapidly heated to its recrystallization temperature, and then subjected to high temperature, multi-axial deformation, for example, by heavy cross-forging or swaging. The deformed specimen may be cooled and reheated to a second recrystallization temperature. The metal or alloy in the specimen is then allowed to recrystallize, such that the grain size is controlled by quenching the specimen to room temperature. A desired medical device is then configured from the fine grained material. Decreasing the average grain size of a substrate material and increasing the number of grains across a thickness of a strut or similar component of the medical device increases the strength of the device and imparts other beneficial properties into the device.10-18-2012
20120323307HYBRID STENT - A stent is provided with a series of short pieces or sections connected together by a bioresorbable polymer. The stent sections are designed to separate or articulate with time as the polymer biodegrades. The time of separation can be controlled by the characteristics of the bioresorbable polymer to allow the stent to be buried in neo-intima. By using a tube made of a bioresorbable polymer, the continuous covering of the tubing may inhibit embolization in the first few weeks after stent implantation within the walls of a vessel and timing for removal of the tube through formulation of the bioresorbable polymer can be controlled to occur when embolization is no longer a risk. When the detachment of the stent pieces or sections occurs, they are fixedly secured within the vessel and each is able to flex with the vessel independently of the other stent segments.12-20-2012
20120323308Coatings for Medical Devices Comprising a Therapeutic Agent and a Metallic Material - The invention relates generally to an implantable medical device for delivering a therapeutic agent to the body tissue of a patient, and a method for making such a medical device. In particular, the invention pertains to an implantable medical device, such as an intravascular stent, having a coating comprising a first coating composition comprising a therapeutic agent and, optionally, a polymer; and a second coating composition comprising a metallic material.12-20-2012
20110238158EXPANDABLE VASCULAR ENDOLUMINAL PROSTHESES - The invention provides expandable tubular endoluminal prostheses for the treatment of atherosclerotic lesions of blood vessels, including vulnerable plaque lesions, and methods of treatment using the prostheses. Various prostheses of the invention are characterized by hoop strength suitable for treating vulnerable plaque lesions, good conformability and good apposition to vessel walls, as well as minimal coverage areas in order to minimize the inflammatory response to the implanted prostheses.09-29-2011
20110238157CORONARY ARTERY VASCULAR STENT WITH MEDICINE CARRYING SLOTS - The present invention discloses a coronary artery vascular stent with drug carrying slots (09-29-2011
20110238156Flexible Stent Design - Stents having a plurality of serpentine bands including a proximal end portion, a distal end portion, and a middle portion therebetween are herein disclosed. Each of the bands includes peaks and valleys. Serpentine bands of the proximal end portion are connected together in a repeating pattern of connected and unconnected peaks and valleys. Serpentine bands of the distal end portion are connected together in a repeating pattern of connected and unconnected peaks and valleys. The repeating pattern of the proximal end portion is different than the repeating pattern of the distal end portion.09-29-2011
20100249905BALLOON EXPANDABLE BIOABSORBABLE STENT WITH A SINGLE STRESS CONCENTRATION REGION INTERCONNECTING ADJACENT STRUTS - An expandable, implantable medical device, such as an intraluminal stent (09-30-2010
20100249904STENT AND LIVING ORGAN DILATOR - A stent, composed of linear components, comes into close contact with a tissue in vivo upon being deformed when set indwelling in vivo. The stent has linear components which are deformed to exhibit a force for maintaining dilation when the stent is set indwelling in vivo. The linear components deformed when the stent is set indwelling in vivo are composed of non-biodegradable metallic linear components and a plurality of biodegradable material-made linear components which are bonded to the non-biodegradable metallic linear components. Furthermore, when set indwelling in vivo, the stent exhibits the force for maintaining the dilation owing to both the non-biodegradable metallic linear components and the biodegradable material-made linear components. After a predetermined period of time, biodegradation of the biodegradable material-made linear components proceeds, which results in a lowering of the force for maintaining the dilation09-30-2010
20100234936SELF-EXPANDING STENT - A self-expanding stent comprising a series of zig-zag stenting rings (A, B, C, D, E, F, D09-16-2010
20120089219STENT HAVING INCREASED VISIBILITY IN THE X-RAY IMAGE - A stent comprising a tubular base body having a lumen along a longitudinal axis. The base body has a plurality of circumferential support structures and one or more connectors. Two successive circumferential support structures are connected to one another via at least one connector. The stent is characterized in that one, multiple, or all support structures and/or connectors have a slotted passage, and the slotted passage is filled with a radiopaque material and has a curvature which increases at least toward one end of the slotted passage.04-12-2012
20110276126Longitudinally Flexible Expandable Stent - In at least one embodiment, a stent comprises a plurality of serpentine bands and a plurality of connector columns. Each serpentine band comprises a plurality of alternating straight band struts and turns. Adjacent serpentine bands are connected across a connector column by a plurality of connector struts. Each connector strut is connected at one end to a turn of one serpentine band and connected at the other end to a turn of another serpentine band. The turns of a serpentine band comprise connected turns that connect to a connector strut and unconnected turns that do not connect to a connector strut. At least one serpentine band comprises a repeating pattern of three band struts and then five band struts extending between connected turns as the serpentine band is traversed. At least one serpentine band comprises a repeating pattern of three band struts and then one band strut extending between connected turns as the serpentine band is traversed.11-10-2011
20110319980COVERED STENT - A covered stent having a selected arrangement of uncovered cells is provided. The uncovered cells are configured to provide a desired flexibility profile to the stent structure. In one preferred embodiment, the stent contains one or more circumferential rows of uncovered cells located between two or more circumferential rows of covered cells. In some embodiments, the stent may have a central body portion and one or more flanges where the circumferential rows of uncovered cells may be located within the flange(s).12-29-2011
20110319979STENT AND METHOD OF MOUNTING THE SAME - A stent that maintains flexibility in a length direction and prevents fatigue failure by securing predetermined durability is disclosed.12-29-2011
20120101567PERCUTANEOUSLY IMPLANTABLE FLAP STENT, DEVICE FOR APPLYING THE SAME AND METHOD FOR PRODUCING THE FLAP STENT - A valve stent includes a plurality of crown elements arranged coaxially one behind the other, each formed by several u-shaped bends with at least one base and two ends. The bases of one crown element are connected to the ends of another crown element via connection bars. To produce this valve stent, 3D droplet dosing technology is used to form a thin-walled sandwich structure. A device, suitable for application of a stent is provided with positioning wires having clamps at their ends which can be connected to the fixing hooks at the ends of the crown elements in force-locking manner.04-26-2012
20120101566STENT HAVING IMPROVED STENT DESIGN - A stent is provided having a base body circumscribing a cylindrical shape and radially expandable from a contracted starting position into a dilated support position, including a plurality of meander-shaped struts disposed in the circumferential direction and arrayed on one another in the axial direction, each strut being meander-shaped in its coarse structure and made of a flexible material, and at least one axial connector in the axial direction, connecting the meander-shaped struts of two axially adjacent meandering curves, wherein the at least one axial connector connects the inside radius of a zenith point of a first meandering curve with a second meandering curve, characterized in that the at least one axial connector at the inside radius of the zenith point of the first meandering curve has an at least double-arm structure.04-26-2012
20120101565BIOABSORBABLE STENT HAVING RADIOPACITY - A radially expandable stent and methods of making the same, the stent made entirely of a bioabsorbable metal, the stent having a portion of increased radiopacity, wherein the portion of increased radiopacity has one or more of the following characteristics:04-26-2012
20120290074IMPLANTABLE MEDICAL DEVICE HAVING ENHANCED ENDOTHELIAL MIGRATION FEATURES AND METHODS OF MAKING THE SAME - An implantable medical device having enhanced endothelial migration features, generally comprises: a structural member including a leading edge and a trailing edge interconnected by a third surface region, the leading edge including a second surface region in a generally curvilinear cross-section, and the trailing edge including a fourth surface region in a generally curvilinear cross-section, whereby blood flow over the second surface region generate shear stress at the second surface region without an eddy region in the second surface region.11-15-2012
20100211161Bendable Stent - A stent formed by slitting a tube to create a matrix of struts, the slitted tube being radially expandable to a stenting disposition in which the struts exhibit a zig-zag pattern in successive loops around the circumference of the stent, the zig-zag pattern exhibiting a cusp between any two adjacent struts, with selected tied cusps of any one loop being connected by a bridge to a facing cusp of the adjacent loop and with intervening free cusps, characterised by lengthwise staggering of circumferentially adjacent said slits within said loops, wherein any two struts that are contiguous with a said tied cusp are of different lengths and any strut that extends from one free cusp to another free cusp has the same length as any other such strut such that, in the said stenting disposition, the free cusps of adjacent loops are circumferentially displaced from each other.08-19-2010
20100204779STENT AND METHOD FOR PRODUCING A STENT - A stent with a tubular grid structure (08-12-2010
20110160843High Strength Low Opening Pressure Stent Design - A stent has a plurality of expansion columns that extend in a radial direction to form a circumference of the stent and interconnected in the axial direction to form an overall axial length of the stent. Each expansion column has a plurality of first cells and a plurality of second cells that alternates along the expansion column with at least one first cell. Each first cell has at least two facing walls extending in the radial direction that have a first width. The second cells each have at least two facing walls that extend in the radial direction which have a second with greater than the first width. The first cell uses less force to open than the second cell, but upon opening provides increased radial strength by creating a substantially vertical cell wall.06-30-2011
20080255657STENT WITH UNCONNECTED STENT SEGMENTS - This invention generally relates to stents, such as intravascular stents. More particularly, the invention is directed to stents comprising expandable stent segments, such as unconnected expandable stent segments. The invention is also directed to methods for making such stents.10-16-2008
20080243231Medical device with a porous surface for delivery of a therapeutic agent - The present invention is generally directed to implantable medical devices for delivering therapeutic agents to the body tissue of a patient and methods for making such medical devices. In particular, the present invention is directed to implantable medical devices, such as intravascular stents, having a surface that includes a plurality of cavities and a plurality of pores and a composition disposed in the pores and/or cavities, as well as, implantable medical devices, such as intravascular stents, having a surface that has a coating composition disposed on the surface, wherein the coating composition includes a plurality of cavities and a plurality of pores and another coating composition disposed in the pores and/or cavities.10-02-2008
20080234800Stent Including a Toggle Lock - A stent includes cylindrical rings disposed adjacent to each other. Each cylindrical ring includes longitudinal segments that may be disposed generally parallel to a longitudinal axis of the stent. The longitudinal segments are coupled to each other by toggle lock struts. The toggle lock struts are disposed substantially at the center of the circumferentially adjacent longitudinal segments. When the stent is in a compressed state for delivery, the toggle lock struts are bent such that the longitudinal segments are disposed close to each other. Upon expansion of the stent, the toggle lock struts straighten such that the longitudinal segments are disposed father apart form each other.09-25-2008
20130178927LOW PROFILE STENT WITH FLEXIBLE LINK - The invention provides an improved stent design for repairing vasculature, the stent having rings including struts defining first peaks and second peaks, selected second peaks of adjacent rings being connected by links. The stent design incorporates non-linear links with undulating portions extending generally perpendicular to or circumferentially with respect to a longitudinal axis of the stent and adjacent first peaks with different longitudinal lengths such that stent flexibility is increased without sacrificing stent compression for delivery.07-11-2013
20130178926Stent Having At Least One Connecting Member Configured to Controllably Sever In Vivo - A stent may include a connector having a first portion, a second portion, and a third portion positioned between the first and second portions. The connector may be configured to interconnect axially adjacent stent segments. The connector may be further configured such that the third portion severs in response to a threshold amount of axial force, axial foreshortening, and/or cyclic loading or fatigue, in order to predispose the severance of one or more pre-configured connectors in a controlled manner to minimize any potential harm to the surrounding vasculature of a patient.07-11-2013
20130178928STENTS WITH LOW STRUT THICKNESS AND VARIABLE STRUT GEOMETRY - The invention disclosed herein is a balloon expandable metallic stent with low and uniform strut thickness for implantation in a body lumen such as artery. The stent consists of variable geometry of scaffold structure consisting of cells with open and closed configuration across its axial length to impart differential mechanical strength to different parts. The closed cell configuration is stronger than the open cell configuration and hence offers more resistance to radial expansion than the open cell configuration. The stent is divided into distinct sections of rows of closed and open cells. By providing closed cells in the end portions and open cells in the central portion of a stent, the dog-boning effect can be eliminated. Other configurations can be created by making only one end section of the stent with closed cells. The thickness of the stent made from cobalt-chromium alloy L-605 could be reduced to as low as 35 microns with adequate radial strength as well as fatigue resistance. The stent with thinner struts and elimination of dog-boning effect are known to reduce arterial injury.07-11-2013
20130090719Highly Flexible Stent and Method of Manufacture - Preferred embodiments of a stent with a high degree of flexibility are shown and described. The stent can include a continuous helical winding having interconnected struts joined at vertices, and having bridges connecting sections of the helical winding to each other. An annular ring can be provided at one or both ends of the helical winding, and the annular ring can have five extensions extending to connect to the helical winding. One of the extensions can connect to a bridge and another extension can connect to a vertex. The struts at the ends of the helical winding can have strut lengths that differ from the strut lengths of the struts in a central portion of the winding between the ends of the winding.04-11-2013
20130090718RADIALLY EXPANDABLE POLYMER PROSTHESIS AND METHOD OF MAKING SAME - Polymeric stents having fracture toughness and resistance to recoil after deployment are disclosed along with methods of manufacturing such stents. Improvements to mechanical characteristics and other improvements may be achieved by having polymer chains within individual stent struts oriented in a direction that is closer to or in line with the axis of the individual stent struts. The struts are connected to each other by hinge elements that are configured to bend during crimping and deployment of the stent. Ring struts form ring structures. A ring structure can have an overall curvilinear length from about 12 mm to about 15 mm.04-11-2013
20130096669PARTIALLY ANNEALED STENT - A stent and method for manufacturing a stent that achieves both strength as well as ductility. In the manufacturing process, the material used to form the stent is only partially annealed to lower the grain size across the thickness of the stent. The material is partially annealed either prior to or after the cutting a stent pattern into a tube.04-18-2013
20130096670Expandable Medical Implant - An implant includes at least one supporting arrangement which is suited for supporting the implant at or on an implantation position, wherein both the supporting arrangement and the implant are expandable from a first diameter to a second diameter and/or are collapsible from the second diameter to the first diameter. The supporting arrangement includes bars which are connected to each other by means of connecting sections and at least one post for connecting the supporting arrangement with at least one other structure of the implant. At least two of the connecting sections differ in at least one material characteristic, for example, thickness.04-18-2013
20130123906BIOABSORBABLE POLYMERIC MEDICAL DEVICE - In embodiments there is described a cardiovascular tube-shaped lockable and expandable bioabsorbable scaffold having a low immunogenicity manufactured from a crystallizable bioabsorbable polymer composition or blend.05-16-2013
20130123905OFFSET PEAK-TO-PEAK STENT PATTERN - The invention is directed to an expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The invention provides for an intravascular stent having a plurality of cylindrical rings connected by links. The links between adjacent rings provide axial strength when subjected to longitudinal compressive forces.05-16-2013
20130123904BIFURCATED ENDOLUMINAL PROSTHESIS - The present disclosure provides a bifurcated stent for use in juxtaposition with an angiological bifurcation. The disclosure provides a bifurcated stent that includes a proximal portion adapted to be disposed within a blood vessel in juxtaposition with a bifurcation, a first distal stent portion adapted to extend across the bifurcation into one of the branched blood vessels, and a second distal stent portion adapted to allow blood to flow from the proximal portion into the other branch blood vessel. The disclosure also provides a bifurcated prosthesis including such a bifurcated stent and a tubular graft layer formed from a biocompatible fabric in juxtaposition with the stent. The disclosure also provides a stent joining means for joining two stents one to the other to define a continuous lumen through the two stents.05-16-2013
20130123903ENHANCED RETENTION STENT - An expandable stent has larger cells located at the proximal and distal ends of the stent than in the body portion so that more of a catheter balloon can protrude into the stent cells to increase stent retention. The intravascular stent has a plurality of cylindrical rings connected by links, the spacing of which is a factor in defining the cell size. Where the spacing between adjacent rings is longer such as at the ends of the stent, more than one U-shaped elements can be incorporated into the links to improve flexibility. The stent can be compressed or crimped onto a balloon catheter to a very low profile and maintain a high degree of stent retention due to increased spacing between rings at the proximal and distal ends of the stent.05-16-2013
20110313511EXPANDABLE PROSTHESES FOR TREATING ATHEROSCLEROTIC LESIONS INCLUDING VULNERABLE PLAQUES - The invention provides expandable tubular prostheses that are designed for the treatment of atherosclerotic lesions, such as vulnerable plaques, and that are characterized by no foreshortening, optimal radial force and accuracy of deployment. In the treatment of vulnerable plaque, the device may be expanded in a blood vessel so that its central section at least partially contacts a vulnerable plaque lesion and/or the blood vessel wall in close proximity to the vulnerable plaque lesion. The invention also provides more general methods of treating atherosclerosis and promoting endothelialization using the prostheses of the invention.12-22-2011
20130131783IMPLANTABLE MEDICAL DEVICES CONSTRUCTED OF SHAPE MEMORY MATERIAL - Medical apparatus (05-23-2013
20130144375ENDOLUMINAL DEVICE AND METHOD - An endoluminal device can be configured for precise positioning during deployment within a vessel. The endoluminal device can be a tack, stent, vascular implant or other type of implant. The endoluminal device can have circumferential member with an undulating configuration having multiple inward and outward apexes and struts extending therebetween. Two of the struts can be used to establish a foot for the precise positioning of the device during deployment. A method of placing the endoluminal device can include withdrawing an outer sheath such that a portion of the endoluminal device is expanded prior to the rest of the endoluminal device.06-06-2013
20080200976CARBON STENTS - Exemplary embodiments of the present invention relate to a stent having a supporting structure of a non-particulate inorganic carbon material.08-21-2008
20110213457ANGIOPLASTY STENTS - An angioplasty stent comprises a body comprising a plurality of successive segments connected in pairs by bridge means so that the successive segments can be oriented relative to one another for the purposes of bending of the body in any direction defined by a linear combination of respective orientation axes defined by the bridge connection means. During the radial expansion of the stent, the axial contraction of the segments resulting from the opening-out of the respective loops is compensated by axial projection of the bridge elements from the respective concave portions. The wall of the body comprises arms for supporting a lumen as well as regions which are selectively deformable during the expansion of the stent, the arms and the selectively deformable regions having different cross-sections and/or cross-sectional areas. At least one portion of the body may have a substantially reticular structure, the branches of which define geometrical figures identifiable as fractals.09-01-2011
20110230958Stent - It is an object of the present invention to provide a stent including a plurality of loop stents connected with one another using a plurality of loop struts and adapted to bend uniformly as a whole.09-22-2011
20110245909EXPANDABLE SLIDE AND LOCK STENT - An expandable slide and lock stent is provided that comprises a plurality of radial elements interconnected to form a tubular member. Each radial element can comprise a helical backbone and at least one elongate member extending from the helical backbone in a circumferential direction. Each backbone can have at least one slot that can be configured to receive an elongate member of an adjacent radial element.10-06-2011
20130150950Stent06-13-2013
20100312329ENDOPROSTHESIS HAVING FOOT EXTENSIONS - Endoprosthesis, such as a stent, includes at least one annular element defined by a first set of strut members interconnected to define apices proximate opposite sides of the annular element. The annular element further includes a foot extension extending between at least one pair of circumferentially-adjacent strut members. The foot extension has first and second foot portions extending circumferentially from corresponding ends of the circumferentially-adjacent strut members, and are contoured to provide at least two areas of flexure. The first and second foot portions are joined at a toe portion of the foot extension, and define a circumferentially-directed apex between the pair of circumferentially-adjacent strut members. Preferably, at least one or more additional annular elements, each defined by interconnected strut members, are provided. The annular elements are generally expandable between a delivery configuration and a deployed configuration. The annular elements are longitudinally aligned and connected at connection locations. Preferably, each connection location includes a foot extension, such as by an overlapping pattern between the longitudinally-adjacent annular elements or by a connector extending therebetween.12-09-2010
20100318181IMPLANTABLE VASCULAR GRAFT - Disclosed is a tubular endoluminal vascular prosthesis, useful in treating, for example, an abdominal aortic aneurysm. The prosthesis comprises a self-expandable wire support structure having a tubular main body support and first and second branch supports. The prosthesis can have a plurality of radially outwardly extending barbs. The branch supports may articulate with the main body to permit the branches to pivot laterally from the axis of the main body throughout a substantial range of motion.12-16-2010
20100318180MULTI-LAYER STENT ASSEMBLY - A stent assembly includes a first stent having a first plurality of struts defining a first cellular pattern and a second stent having a second plurality of struts defining a second cellular pattern. The first and second cellular patterns may be different. In one example, the first plurality of struts may be disposed within one or more first range of angles and the second plurality of struts may be disposed within one or more second range of angles, where the one or more first range of angles and the one or more second range of angles may be mutually exclusive ranges. In other examples, the first and second cellular patterns may be mirrored or have a different periodicity.12-16-2010
20120283818SECURED STRAND END DEVICES - A woven, self-expanding stent device has one or more strands and is configured for insertion into an anatomical structure. The device includes a coupling structure secured to two different strand end portions that are substantially aligned with each other. The two different strand end portions include nickel and titanium. The coupling structure is not a strand of the device.11-08-2012
20120283817HELICAL HYBRID STENT - An expandable helical stent is provided, wherein the stent may be formed of an amorphous metal alloy or other non-amorphous metal with a securement. The stent is formed from flat or tubular metal in a helical coiled structure which has an undulating pattern. The main stent component may be formed of a single helically coiled component. Alternatively, a plurality of helically coiled ribbons may be used to form a stent heterogeneous in design, material, or other characteristic particular to that stent. The helical tubular structure may be secured with a securement, such as a weld, interlock or a polymer, to maintain the helical coils in a tubular configuration. The helical coils of the main stent component may be spaced apart or nestled to each other to maintain the tubular shape of the helically coiled stent and prevent the polymer layer from sagging at any point between cycles of the coils.11-08-2012
20110307051Bioerodible Endoprostheses Including Electrochemical Cell - A bioerodible endoprosthesis includes a bioerodible body and a bioerodible electrochemical cell. The bioerodible body includes a bioerodible metal. The bioerodible electrochemical cell includes a cathode, an anode, and an electrolyte between the cathode and the anode. The cathode is adapted to be in electrical contact with at least a first portion of the bioerodible body when the electrochemical cell is activated to accelerate the bioerosion of the first portion of the bioerodible body when the endoprosthesis is implanted within a physiological environment.12-15-2011
20120029624HYBRID STENT AND METHOD OF MAKING SUCH A STENT - A hybrid stent (02-02-2012
20120029623FLEXIBLE STENT HAVING PROTRUDING HINGES - The present invention relates to tissue-supporting medical devices and drug delivery systems, and more particularly to tubular flexible stents that are implanted within a body lumen of a living animal or human to support the organ, maintain patency and/or deliver drugs or agents. The tubular flexible stent has a cylindrical shape defining a longitudinal axis and includes a helical section having of a plurality of longitudinally oriented strut members and a plurality of circumferentially oriented hinge members connecting circumferentially adjacent strut members to form a band. The band is wrapped about the longitudinal axis in a substantially helical manner to form a plurality of helical windings. At least one connector member extends between adjacent windings.02-02-2012
20120029622FLEXIBLE HELICAL STENT HAVING DIFFERENT HELICAL REGIONS - The present invention relates to tubular stents that are implanted within a body lumen. The stent has a cylindrical shape defining a longitudinal axis and includes a proximal helical section, a distal helical section and an intermediate ring section there between. Each of the proximal and distal helical sections has of a plurality of longitudinally oriented strut members and a plurality of circumferentially oriented hinge members connecting circumferentially adjacent strut members to form a band, the band being wrapped about the longitudinal axis in a substantially helical manner to form a plurality of helical windings, wherein the distal helical section is wound about the longitudinal axis in the opposite direction from the proximal helical section. The intermediate ring section includes a plurality of longitudinally oriented strut members and a plurality of circumferentially oriented hinge members connecting circumferentially adjacent strut members to form an endless ring.02-02-2012
20120029621FLEXIBLE HELICAL STENT HAVING INTERMEDIATE NON-HELICAL REGION - The present invention relates to tubular stents that are implanted within a body lumen. The stent has a cylindrical shape defining a longitudinal axis and includes a helical section and a closed endless ring section within the helical section. The helical section has of a plurality of longitudinally oriented strut members and a plurality of circumferentially oriented hinge members connecting circumferentially adjacent strut members to form a band, the band being wrapped about the longitudinal axis in a substantially helical manner to form a plurality of helical windings. The closed ring section interrupts the repeating helical pattern and separates the helical section into a proximal helical section and a distal helical section. The intermediate ring section includes a plurality of longitudinally oriented strut members and a plurality of circumferentially oriented hinge members connecting circumferentially adjacent strut members to form an endless ring.02-02-2012
20120029620FLEXIBLE HELICAL STENT HAVING INTERMEDIATE STRUCTURAL FEATURE - The present invention relates to tubular stents that are implanted within a body lumen to support the organ, maintain patency and/or deliver drugs or agents. The stent has a cylindrical shape defining a longitudinal axis and includes a helical section having of a plurality of longitudinally oriented strut members and a plurality of circumferentially oriented hinge members connecting circumferentially adjacent strut members to form a band. The band is wrapped about the longitudinal axis in a substantially helical manner to form a plurality of helical windings. The helical section further includes a proximal section, a distal section and an intermediate section there between. The stent further includes a plurality of connector members extending between longitudinally adjacent helical windings, wherein the number of circumferentially adjacent connector members per winding in the intermediate section is greater than the number of circumferentially adjacent connector members per winding in the proximal or distal sections.02-02-2012
20120029619FLEXIBLE HELICAL STENT HAVING INTERMEDIATE STRUCTURAL FEATURE - The present invention relates to tubular stent and drug delivery systems. The stent has a cylindrical shape defining a longitudinal axis and includes a helical section having of a plurality of longitudinally oriented strut members and a plurality of circumferentially oriented hinge members connecting circumferentially adjacent strut members to form a band. The band is wrapped about the longitudinal axis in a substantially helical manner to form a plurality of helical windings. The helical section further includes a proximal section, a distal section and an intermediate section, wherein the band forming the proximal and distal sections has members with a first width at coincident points along the band length, and the band forming the intermediate section has members with a second width greater than the first width at coincident points along the band length. The wider width in the intermediate section functionally separates the helical section into two subsections.02-02-2012
20120029618Stent Connector Bump Design - An endoprosthesis comprises a plurality of serpentine bands. Each serpentine band comprises a plurality of interconnected struts forming peaks and troughs. Adjacent serpentine bands are interconnected by one or more connectors. First and second serpentine bands are connected via at least one connector. The connector has a first side facing one the struts and a second side facing another of the struts. The connector extends from an inside of a trough of the first serpentine bands to the outside of a trough of the other of the serpentine bands. The connector has a first bump extending from the first side and a second bump extending from the second side opposite the first, the first bump located adjacent a first peak and the second bump located adjacent a second peak.02-02-2012
20120035710RING STENT - A stent arrangement which has at least a first ring (02-09-2012
20120035708BLOOD PERFUSION DEVICE - A perfusion device and a delivery system for repair of a damaged portion of a body vessel. Perfusion device can include a tubular body that is self-expandable, having a proximal portion, a distal portion, and an intermediate portion. One or more series of barbs can be disposed circumferentially along the intermediate portion. Barbs are capable of penetrating into the tunica intima and tunica media of said vessel wall upon insertion of said device into said body vessel, and not into said tunica adventitia. A graft can be associated with the tubular body. Graft has a proximal end and a distal end, and preferably extends entirely along a luminal wall of the tubular body. Graft may also extend along an exterior surface of the tubular body at the proximal and distal portions. A remodelable covering can be applied along the intermediate portion. Delivery devices for the perfusion implant and methods of delivering the perfusion implant are also provided.02-09-2012
20130204349BIOABSORBABLE STENT AND IMPLANTABLE MEDICAL DEVICE - A stent assembly (08-08-2013
20130204350HELICAL HYBRID STENT - An expandable helical stent with a securement is provided. The stent is formed from flat or tubular metal in a helical coiled structure which has an undulating pattern. The main stent component may be formed of a single helically coiled component. Alternatively, a plurality of helically coiled ribbons may be used to form a stent heterogeneous in design, material, or other characteristi. The helical tubular structure may be secured with a securement, such as a weld, interlock or a polymer, to maintain the helical coils in a tubular configuration. The helical coils of the main stent component may be spaced apart or nestled to each other. The nestling of the undulation of adjacent helical coils contributes to maintaining the tubular shape of the helically coiled stent. In addition, the nestling of helical coils may prevent the polymer layer from sagging at any point between cycles of the helical coils.08-08-2013
20120078346LONGITUDINALLY FLEXIBLE EXPANDABLE STENT - Segmented articulatable stent of open structure comprised of end-connected struts of first and second lengths making up first and second segments with angular interconnects between adjacent first and second segments.03-29-2012
20120095545MEDICAL STENT - A medical stent comprising a coil formed by winding a wire around an axis, an outer layer formed substantially tubular made from a first resin material, provided on an outer peripheral side of said coil and coaxial to said coil, and an inner layer formed substantially tubular made from a second resin material, provided on an inner peripheral side of said coil and coaxial to said coil.04-19-2012
20130211498ENDOPROSTHESIS WITH VARYING COMPRESSIBILITY AND METHODS OF USE - The present disclosure is directed to an endoprosthesis comprising a graft component and at least one support component with varying compressibility along the length of the endoprosthesis. In various embodiments, the endoprosthesis comprises at least a first segment and a second segment, wherein the first segment is more compressible than the second. In another embodiment having a second segment between the first and third segments, the third segment can also be more compressible than the second segment. Alternatively, in an embodiment, a second segment can have greater rigidity than a first segment, as well as a third segment, if present.08-15-2013
20130211499INTRALUMINAL MEDICAL DEVICE WITH STRAIN CONCENTRATING BRIDGE - An intraluminal medical device having axially adjacent segments connected by at least one strain concentrating bridge. The axially adjacent segments remain connected during delivery to an intended treatment site. After delivery, at least one of the at least one strain concentrating bridge may yield to separate at least two of the axially adjacent segments, if subjected to sufficient dynamic loading in the area within which the device is emplaced. The intraluminal device is ideally comprised of biocompatible metal materials and the at least one bridge is also comprised of such biocompatible metal materials, wherein the at least one strain concentrating bridge has a threshold level of strain less than that of the axially adjacent segments. Changing materials or changing dimensions of the at least one strain concentrating bridge can alter the threshold level of strain of the at least one bridge. Ideally the at least one strain concentrating bridge yields to disconnect the axially adjacent segments when subjected to prescribed loading conditions. The strain concentrating bridge may include a notched strain riser, a thinned portion, or a slotted portion that receives protrusions.08-15-2013

Patent applications in class Having multiple connected bodies