Patent application number | Description | Published |
20090182407 | LUER OR CLAMP-TYPE SUTURE RELEASE APPARATUS AND METHOD FOR LOADING AND DELIVERING A STENT - An assembly for delivering a self-expanding stent within a body lumen is includes a self-expanding stent, a delivery catheter for delivering the stent, a transfer member removeably engagable with a distal end of the delivery catheter, and an elongate filament for manipulating the stent through the passage of the transfer member. The delivery catheter includes an elongate flexible shaft having a stent holder at its distal end for restraining axial movement of the stent when the stent is disposed within a hollow cylindrical passage of an elongate tube moveably disposed over a portion of the shaft, and a handle secured to the proximal end of the flexible shaft. The elongate filament is releasably secured to the stent, and the ends of the filament are accessible at the handle to permit movement of the stent within the device by manipulation of the filament. | 07-16-2009 |
20100161034 | STENTS 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 |
20100240954 | MEDICAL DEVICE POSITIONING SYSTEM - Embodiments of the invention include a medical device for accessing a patient's body portion and used for diagnosis and treatment of medical conditions. Embodiments of the invention may include a particular endoscopic positioning mechanism for placing an endoscope and an additional treatment device within desired body portions in order to assist in diagnosis and treatment of anatomical diseases and disorders. In particular, a medical device according to an embodiment of the invention may include an outer flexible tube and a positioning mechanism configured for rotating one portion of the flexible tube relative to another portion of the flexible tube. | 09-23-2010 |
20110028984 | RAPID EXCHANGE ENTERAL STENT DELIVERY SYSTEM - Devices for palliating gastrointestinal strictures using rapid exchange type enteral stent placement catheters. The catheter may include an inner member and an outer member, with the two members being slidable with respect to one another. In various device embodiments, a ramp for directing a guidewire out from within the catheter is provided using portions of the outer member or a shaped mandrel. The inner member may take a number of forms, including a tubular distal portion, a skived or integrally attached elongate midsection, and a proximal portion. A mandrel can be used in a portion proximal of the guidewire ramp, with the mandrel taking one of several disclosed forms. | 02-03-2011 |
20110079315 | ATRAUMATIC STENT WITH REDUCED DEPLOYMENT FORCE, METHOD FOR MAKING THE SAME AND METHOD AND APPARATUS FOR DEPLOYING AND POSITIONING THE STENT - An implantable stent includes a plurality of elongate wires braided to form a hollow tubular structure having a tubular wall to define an interior surface and an exterior surface and having opposed open first and second ends, wherein the opposed open first and second ends are atraumatic ends. The atraumatic ends of the stent are desirably free of any loose wire ends. The wires include composite wires to enhance visibility of the wires to provide improved external imaging of the wires in the body. The elongate composite wires of the stent may be metallic wires having an outer metallic portion including a first metal, such as nitinol, and an inner metallic core portion including a second metal, which is a radiopaque material, such as gold, barium sulfate, ferritic particles, platinum, platinum-tungsten, palladium, platinum-iridium, rhodium, tantalum or combinations thereof. | 04-07-2011 |
20110295359 | Stent With Reduced Weld Profiles and a Closed-End Wire Configuration - A method for making an implantable stent includes the steps of (i) providing a plurality of elongate stent wires; (ii) forming said wires into a hollow tubular structure having opposed first and second open ends; (iii) terminating said wires at the second end; (iv) aligning the wires at the second end into a plurality of mated adjacent wires to define a plurality of abutting regions; (v) welding the mated adjacent wires to one and the other at the abutting regions to define a plurality of welds; and optionally (vi) chemically or electro-chemically removing a portion of the welds. The method may further include the steps of (a) extending at least one of the mated stent wires to provide an extended stent wire; (b) looping the extended stent wire so the extended end abuts a proximal pair of stent wires; and (c) welding the extended and looped wire to the proximal pair of wires. The step of looping may include the forming of the wire into a equilaterally arched loop having an apex, but not having other sharp bends. | 12-01-2011 |
20110313404 | STENT DELIVERY SYSTEM HAVING RETENTION STRUCTURE - A stent delivery system including an elongate shaft of a medical device, a stent selectively coupled to a distal portion of the elongate shaft, and a coupling mechanism for selectively coupling the stent to the elongate shaft by inserting a tab on one of the stent or the elongate shaft into an opening in the other of the stent or the elongate shaft. The tab may be deflected from a first position to a second position to disengage the tab from the opening. | 12-22-2011 |
20110319904 | DELIVERY SYSTEM HAVING STENT RETENTION STRUCTURE - A drainage stent delivery system including an elongate shaft of a medial device, a drainage catheter or stent, and an interference fit member for selectively coupling the drainage stent to the elongate shaft. The drainage stent is selectively coupled to a distal portion of the elongate shaft by an interference fit between the interference fit member and the drainage stent such that axial movement of the elongate shaft relative to the drainage stent moves the interference fit member from a first position in which the interference fit member is engaged with the drainage stent and forms an interference fit with the drainage stent to a second position in which the interference fit member is disengaged from the drainage stent. | 12-29-2011 |
20120035700 | STENT DELIVERY SYSTEM - A drainage stent delivery system including an elongate shaft of a medial device, a drainage catheter or stent, and a retention mechanism for selectively retaining the drainage stent on the elongate shaft. The tubular stent is positioned on and surrounding the elongate shaft. The elongate shaft includes a distal tip portion which is deflectable from a first position to a second position, the distal tip portion of the elongate shaft being biased toward the first position. Deflecting the distal tip portion of the elongate shaft from the first position to the second position moves the distal tip portion toward the central longitudinal axis of the tubular stent to allow the stent to be decoupled from the elongate shaft. | 02-09-2012 |
20120095567 | OUTER TUBE FOR STENT REPOSITIONING AND DEPLOYMENT - A drainage stent delivery system including a stent, a guide catheter, a push catheter, and an outer sheath. The guide catheter extends through the lumen of the stent and the push catheter is disposed over a portion of the guide catheter proximal of the distal end of the stent. The outer sheath is slidably disposed over the push catheter and surrounding at least a portion of the stent. The outer sheath may be actuated from a first position in which a distal portion of the outer sheath surrounds the stent to a second position in which the distal portion of the outer sheath is proximal of the stent. The stent delivery system may also include a retention mechanism for selectively coupling the stent to the outer sheath which may selectively decouple the stent from the outer sheath through rotational and/or translational motion of the outer sheath relative to the stent. | 04-19-2012 |
20120101564 | STENTS 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. | 04-26-2012 |
20120203325 | Rapid Exchange Stent Delivery System - Stent delivery systems and methods for making and using stent delivery systems are disclosed. An example stent delivery system may include a guide member having a proximal portion and a distal portion. A stent may be disposed about the distal portion of the guide member. The stent may have a wall having an opening formed therein. A pusher member may be disposed about the guide member and positioned proximal of the stent. A holding filament may be disposed at the opening and may extend to the proximal portion of the guide member. The holding filament may be configured to releasably secure the position of the stent relative to the pusher member. The holding filament may be releasable from the stent independently of movement of the guide member. | 08-09-2012 |
20120283816 | PROSTHESIS ANCHORING AND DEPLOYING DEVICE - A system for intraluminally delivering and deploying stents and other prostheses includes an outer catheter, an inner catheter movable axially relative to the outer catheter, and an anchoring device mounted to a distal end region of the inner catheter. The anchoring device includes one or more control features that interact with a linking structure proximally disposed on the prosthesis, preferably including one or more loops. The control features and loops interact by surface engagement to anchor the prosthesis relative to the inner catheter in a nonfrictional manner, thus to maintain lower axial prosthesis deployment and retraction forces. In one version of the anchor, the control features extend radially outward from a sleeve. In another version, the control features are formed in respective recesses which also receive the loops or other linking structure. | 11-08-2012 |
20130030416 | Rapid Exchange Stent Delivery System - Stent delivery systems, components thereof, and methods for making and using stent delivery systems and components are disclosed. An example combination device may function as both an anchoring mechanism cover and a guidewire lock. The combination device may include a tubular body. The tubular body may define an inner diameter and may have a locking portion. The inner diameter may be sized to fit about an outer diameter of a drainage stent having an anchoring mechanism. The locking portion may be configured to secure the position of a guidewire relative to a catheter system. | 01-31-2013 |
20130274685 | RAPID EXCHANGE ENTERAL STENT DELIVERY SYSTEM - Devices for palliating gastrointestinal strictures using rapid exchange type enteral stent placement catheters. The catheter may include an inner member and an outer member, with the two members being slidable with respect to one another. In various device embodiments, a ramp for directing a guidewire out from within the catheter is provided using portions of the outer member or a shaped mandrel. The inner member may take a number of forms, including a tubular distal portion, a skived or integrally attached elongate midsection, and a proximal portion. A mandrel can be used in a portion proximal of the guidewire ramp, with the mandrel taking one of several disclosed forms. | 10-17-2013 |
20140018901 | Apparatus for Loading and Delivering a Stent - A stent loading and deployment device includes an outer elongate tubular member having opposed proximal and distal ends and an inner elongate tubular member having opposed proximal and distal ends and slidably disposed within the outer tubular member. When the distal ends of the outer tubular member and the inner tubular member are axially aligned, a stent deployment region is defined there in between. The device further includes a stent loading member having opposed proximal and distal ends and slidably disposed between the outer tubular member and the inner tubular member. The distal end of the stent loading member is slidable to a distal position past the distal end of the outer tubular member for receiving a stent and is further slidable toward the proximal end of the outer tubular member to a location past the stent deployment region for disengagement of a stent from the stent loading member. | 01-16-2014 |
20140074220 | Stent With Reduced Weld Profiles and a Closed-End Wire Configuration - A prosthesis including a composite wire forming a mesh, the mesh having a variable diameter wherein at least one end region has a larger diameter than a middle portion; the mesh having an exterior surface and an interior surface, wherein at least one of the surfaces is covered with silicone; and a retrieval loop positioned at at least one end of the mesh. | 03-13-2014 |
20140081382 | STENTS 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. | 03-20-2014 |
20140276407 | Medical Devices Having Micropatterns - Medical devices having one or more micropatterned surfaces (e.g., micropatterned coatings). | 09-18-2014 |
20140277443 | SUPERHYDROPHOBIC COATING FOR AIRWAY MUCUS PLUGGING PREVENTION - A method for reducing mucus accumulation in an airway including disposing an implantable device within an airway, wherein the implantable device has a first end, a second end, and an inner surface defining a lumen extending from the first end to the second end; wherein at least a portion of the inner surface has a hydrophobic polymer coating thereon, wherein a polymer coating surface has dynamic water contact angles of 145 degrees or greater; and wherein the implantable device is constructed and arranged to maintain patency of the airway; wherein accumulation of mucus is reduced as compared to a similar implantable device without the hydrophobic portion of the inner surface. An implantable medical device having a superhydrophobic surface and a method of making an implantable medical device having a superhydrophobic surface are also provided. An implantable medical device having a micropatterned surface with enhanced adhesion to tissue, optionally in combination with other region(s) having a superhydrophobic surface and a method of making such a device. Methods and devices for prevention of bacterial adhesion to implanted medical devices. | 09-18-2014 |
20140296959 | Apparatus and method for loading and delivering a stent using a suture retaining mechanism - An assembly for delivering an intraluminary member into a body lumen including a delivery catheter including an elongated tubular member, an elongated rod disposed within and slidingly engaged with the tubular member, a handle fixed to a proximal end of the rod, and at least one securing mechanism located on the handle, and a thread-like member removably secured to one end of the intraluminary member, the thread-like member extending between the intraluminary member and the handle, the at least one securing mechanism adapted to secure the thread-like member. | 10-02-2014 |
20140324152 | DELIVERY SYSTEM HAVING STENT RETENTION STRUCTURE - A drainage stent delivery system including an elongate shaft of a medial device, a drainage catheter or stent, and an interference fit member for selectively coupling the drainage stent to the elongate shaft. The drainage stent is selectively coupled to a distal portion of the elongate shaft by an interference fit between the interference fit member and the drainage stent such that axial movement of the elongate shaft relative to the drainage stent moves the interference fit member from a first position in which the interference fit member is engaged with the drainage stent and forms an interference fit with the drainage stent to a second position in which the interference fit member is disengaged from the drainage stent. | 10-30-2014 |
20150031948 | MEDICAL DEVICE POSITIONING SYSTEM - Embodiments of the invention include a medical device for accessing a patient's body portion and used for diagnosis and treatment of medical conditions. Embodiments of the invention may include a particular endoscopic positioning mechanism for placing an endoscope and an additional treatment device within desired body portions in order to assist in diagnosis and treatment of anatomical diseases and disorders. In particular, a medical device according to an embodiment of the invention may include an outer flexible tube and a positioning mechanism configured for rotating one portion of the flexible tube relative to another portion of the flexible tube. | 01-29-2015 |
20150081005 | Apparatus for Loading and Delivering a Stent - A stent loading and deployment device includes an outer elongate tubular member having opposed proximal and distal ends and an inner elongate tubular member having opposed proximal and distal ends and slidably disposed within the outer tubular member. When the distal ends of the outer tubular member and the inner tubular member are axially aligned, a stent deployment region is defined there in between. The device further includes a stent loading member having opposed proximal and distal ends and slidably disposed between the outer tubular member and the inner tubular member. The distal end of the stent loading member is slidable to a distal position past the distal end of the outer tubular member for receiving a stent and is further slidable toward the proximal end of the outer tubular member to a location past the stent deployment region for disengagement of a stent from the stent loading member. | 03-19-2015 |