Patent application number | Description | Published |
20080243232 | BIFURCATION STENT AND BALLOON ASSEMBLIES - A bifurcated stent that is positionable adjacent to a branched body vessel. The stent includes a tapered middle portion with a side branch assembly for positioning within the deviating branch of a body vessel. The portion of the stent positioned within the first body vessel and the portion positioned within the main branch vessel have largely different sized diameters. The middle region tapers steeply to bridge this diameter differential. The tapered middle region also angles the side branch assembly which can easily be extended at an angle to the main body of the stent. | 10-02-2008 |
20080281395 | RATCHETING BIO CELL DESIGNS - A bifurcated stent having a side branch constructed out of a bioabsorbable material. The side branch comprises one or more bio cells which are flexible and easily deformable when the stent is in the unexpanded state. The bio cells have a locking member which fixedly holds the bio cells in place once the stent assumes the expanded state. The locking member uses oppositely directed hooks or ratchet teeth to prevent contraction in the bio cells once the expanded state is assumed. By having an appropriate alternation between flexibility and rigidity the side branch is flexible enough to deal with the geometric difficulties of bending and deploying a side branch while being fixed and rigid enough to properly support and scaffold a side branch assembly. The deployment of the side branch can be facilitated by the use of a ratcheting device. The side branch can also have a flared shape. | 11-13-2008 |
20080281402 | Stent 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. | 11-13-2008 |
20090012599 | Biodegradable 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 |
20090069881 | Bifurcated 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 |
20090138075 | Bifurcated Stent with Drug Wells for Specific Ostial, Carina, and Side Branch Treatment - The invention is directed to a stent that delivers multiple therapeutic regimens from different regions of the stent. | 05-28-2009 |
20090192593 | Stent for Delivery a Therapeutic Agent from a Side Surface of a Stent StSrut - Described herein are implantable medical devices, such as implantable or intravascular stents, for delivering a therapeutic agent, and methods for making such medical devices. In one embodiment, the medical device comprises a stent having a plurality of struts, at least one of which has a cavity disposed therein. A therapeutic agent is delivered from the cavity through and opening in a strut surface. In another embodiment, the medical device is a stent having a coating disposed on the side surface(s) of at least one strut for deliver of a therapeutic agent from the coating. | 07-30-2009 |
20090240318 | STENT 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 |
20090240322 | Bifurcation Stent Pattern - A stent may comprise a plurality of serpentine bands connected by connector struts. The stent may further comprise a side branch cell having a plurality of outwardly deployable petals. Each serpentine band may have an approximate longitudinal axis. A portion of the serpentine bands may be flared in the unexpanded state, wherein a portion of the axis of each flared band is oriented helically about a portion of the stent. The bands may reorient during stent expansion, whereafter the axis of each band is oriented in a circumferential direction. | 09-24-2009 |
20090299460 | Bifurcated Stent and Delivery System - A delivery system has a stent and a balloon The stent has a first section made of a plurality of interconnected framework members which define a plurality of potential side branches. The balloon is a dual lumen balloon that can inflate from the proximal end to the distal end with a plurality of protrusions and/or herniations. | 12-03-2009 |
20090319026 | Composite 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 |
20100070023 | BIODEGRADABLE 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 |
20100137974 | Stent 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 |
20100137977 | Coating for Medical Device Having Increased Surface Area - Described herein are implantable medical devices for delivering a therapeutic agent to the body tissue of a patient, and methods for making such medical devices. In particular, the implantable medical devices, such as intravascular stents, have a coating which includes at least one coating composition and has an exposed abluminal surface and an exposed luminal surface or exposed side surface. | 06-03-2010 |
20100292777 | Stent - 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 |
20110066227 | Stent with Dynamic Drug Reservoirs - A stent having one or more beneficial agents which enhance the healing effect of the stent. The agent is positioned within a reservoir. The reservoir dynamically releases the agent when the stent is expanded. The reservoir makes use of various changes in stent shape during expansion to assure proper release of the agent. Agent release can be modulated at various points along the stent and with various rates of release. The reservoirs can also be cooperatively combined with features that enhance stent flexibility, structural integrity, and which prevent recoil. | 03-17-2011 |
20110160840 | Repetitive Cell Bifurcation / Side Branch Ostia Support Stent - A stent comprises at least one closed pathway that defines a single cell. In some embodiments, the closed pathway includes a plurality of petals constructed and arranged to extend away from the tubular wall of the stent. In one embodiment, some of the petals of the closed pathway overlap other of the petals of the closed pathway when the stent is in a reduced state. In at least one embodiment, the stent comprises a plurality of closed pathways. In one embodiment, the closed pathways are arranged in bands that extend either along the length of the stent or about the circumference of the stent. | 06-30-2011 |
20110160843 | High 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 |
20110245905 | ENDOPROSTHESIS - Among other things, a bio-erodible implantable endoprosthesis comprises a member that includes (a) a core having a surface, and (b) a bio-erodible metal on a least a portion of the surface of the core, wherein the bio-erodible metal erodes more slowly than the core and includes openings through which physiological fluids can access the core upon implantation. | 10-06-2011 |
20110276126 | Longitudinally 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 |
20110282428 | BIODEGRADABLE COMPOSITE STENT - A biodegradable stent body is defined by a composite of a biodegradable polymer and a biodegradable metal insert. The composition, geometry, and location of the metal and polymer are selected for desirable stent performance. | 11-17-2011 |
20110301574 | ADJUSTABLE STIFFNESS CATHETER - Medical devices such as catheters can include structure or provision that permit a physician or other health care professional to adjust the stiffness of at least a portion of the medical device. In some instances, the medical device may be adjusted prior to inserting the medical device into a patient. In some cases, the medical device may be adjusted while in use within the patient. | 12-08-2011 |
20120004719 | Stent 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 |
20120095548 | MEDICAL IMPLANT INCLUDING A MAGNESIUM-BASED TIE LAYER - A medical implant includes a metallic base, a tie layer, and at least a first layer overlying an outer surface of the tie layer. The tie layer is bonded to at least a portion of a surface of the metallic base. The tie layer includes magnesium or a magnesium-based alloy. The tie layer can have an outer surface comprising dendritic grains. The tie layer can have a rough outer surface defined by pores, projecting grain structures, and/or projecting particles. A method of producing a tie layer on a medical device includes applying magnesium or a magnesium-based alloy to the medical device and cooling the magnesium or the magnesium-based alloy to produce a rough outer surface. | 04-19-2012 |
20120165920 | Stent - 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 |
20120172972 | Multi 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 |
20120226346 | Low 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 |
20120239128 | STENT AND DELIVERY SYSTEM - Techniques are disclosed that allow a stent to be folded within a balloon of a stent delivery system. In one example, a stent has first and second columns that extend from a proximal end to a distal end along a longitudinal axis. Each of the first columns extend substantially parallel to the longitudinal axis and comprise a plurality of elements that each have a substantially polygonal shape. Each of the second columns extend substantially parallel to the longitudinal axis and are between adjacent first columns. Each of the respective second columns include a plurality of first connectors that have a curvilinear shape and that extend in a substantially circumferential direction to connect adjacent first columns. The stent also has a plurality of second connectors, wherein at least one of the second connectors extends between a first element and a second element. | 09-20-2012 |
20130096535 | ADJUSTABLE STIFFNESS CATHETER - Medical devices such as catheters can include structure or provision that permit a physician or other health care professional to adjust the stiffness of at least a portion of the medical device. In some instances, the medical device may be adjusted prior to inserting the medical device into a patient. In some cases, the medical device may be adjusted while in use within the patient. | 04-18-2013 |