Implant Deployment Apparatus
First Claim
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1. An endoluminal implant device for implanting within a body lumen having a natural lumen diameter, the device comprising:
- a tubular graft member made of expanded polytetrafluoroethylene, wherein the graft member has a proximal end for positioning in an upstream location of the body lumen and a distal end for positioning in a downstream location of the body lumen;
a stent member attached to the proximal end of the graft member, wherein the stent member is self-expanding from a collapsed configuration to an expanded configuration, wherein a diameter of the stent member in the expanded configuration is larger than the natural lumen diameter of the body lumen, and wherein the stent member comprises;
a wire undulating around the graft member, the undulating wire defining proximal apexes and distal apexes, anda plurality of anchors disposed around the undulating wire, wherein each anchor protrudes from the wire away from the graft member and in a direction toward the distal apexes, and is disposed between the proximal apexes and the distal apexes along the longitudinal axis of the graft member.
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Abstract
A delivery system including a restraining member maintains a collapsed implant in its collapsed state for delivery through a small passageway to a desired site in a mammalian body. Once the implant is positioned at the desired site, the restraining member is released so that the stent may expand or be expanded to its expanded state. In a preferred embodiment, the restraining member comprises a sheet of material that surrounds at least a portion of the collapsed stent. Portions of the restraining member are releasably coupled to one another with a low profile thread-like member or suture.
147 Citations
27 Claims
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1. An endoluminal implant device for implanting within a body lumen having a natural lumen diameter, the device comprising:
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a tubular graft member made of expanded polytetrafluoroethylene, wherein the graft member has a proximal end for positioning in an upstream location of the body lumen and a distal end for positioning in a downstream location of the body lumen; a stent member attached to the proximal end of the graft member, wherein the stent member is self-expanding from a collapsed configuration to an expanded configuration, wherein a diameter of the stent member in the expanded configuration is larger than the natural lumen diameter of the body lumen, and wherein the stent member comprises; a wire undulating around the graft member, the undulating wire defining proximal apexes and distal apexes, and a plurality of anchors disposed around the undulating wire, wherein each anchor protrudes from the wire away from the graft member and in a direction toward the distal apexes, and is disposed between the proximal apexes and the distal apexes along the longitudinal axis of the graft member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An endoluminal implant device for implanting within a body lumen having a natural lumen diameter, the device comprising:
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a tubular graft member made of expanded polytetrafluoroethylene, wherein the graft member has a proximal end for positioning in an upstream location of the body lumen and a distal end for positioning in a downstream location of the body lumen; a stent wire attached to the proximal end of the graft member, wherein the stent wire undulates around the graft member and defines proximal apexes and distal apexes, wherein the stent wire is self-expanding from a collapsed configuration to an expanded configuration, and wherein a diameter of the stent wire in the expanded configuration is larger than the natural lumen diameter of the body lumen; and a plurality of anchor wires disposed around the undulating stent wire, wherein each anchor wire protrudes away from the graft member at a location between the proximal apexes and the distal apexes along the longitudinal axis of the graft member, and in a direction toward the distal apexes. - View Dependent Claims (19, 20, 21, 22, 23)
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24. A method for manufacturing an endoluminal implant device for implanting within a body lumen having a natural lumen diameter, the method comprising:
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forming a tubular graft member from expanded polytetrafluoroethylene, wherein the graft member has a proximal end for positioning in an upstream location of the body lumen and a distal end for positioning in a downstream location of the body lumen; forming a stent wire that wraps in a generally cylindrical configuration to define an interior area and an exterior area, and undulates to define proximal apexes, distal apexes, and openings between the distal and proximal apexes, wherein the stent wire is self-expanding from a collapsed configuration to an expanded configuration, and wherein a diameter of the stent wire in the expanded configuration is larger than the natural lumen diameter of the body lumen; forming a plurality of anchor wires disposed around the undulating stent wire, wherein each anchor wire protrudes away from the interior area at a location between the proximal apexes and the distal apexes along the longitudinal axis defined by the cylindrical configuration, and in a direction toward the distal apexes; placing the tubular graft member on a mandrel; placing the stent wire over the tubular graft member; placing an outer graft member, made from expanded polytetrafluoroethylene, around the stent wire such that the outer graft member is exposed to the tubular graft member through the openings in the stent wire; heating the outer graft member and the tubular graft member to adhere the outer graft member to the tubular graft member through the openings in the stent wire, thereby forming the implant device; and removing the mandrel from inside the tubular graft member. - View Dependent Claims (25)
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26. An endoluminal implant device for implanting within a body lumen having a natural lumen diameter, the device comprising:
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a tubular graft member made of expanded polytetrafluoroethylene, wherein the tubular graft member has a proximal end for positioning in an upstream location of the body lumen and a distal end for positioning in a downstream location of the body lumen; a stent member attached to the proximal end of the tubular graft member, wherein the stent member wraps in a generally cylindrical configuration around the tubular graft member, wherein the stent member is self-expanding from a collapsed configuration to an expanded configuration, and wherein a diameter of the stent member in the expanded configuration is larger than the natural lumen diameter of the body lumen; and a plurality of anchors attached to the stent member, wherein each anchor protrudes away from the tubular graft member and in a direction toward the distal end of the tubular graft member. - View Dependent Claims (27)
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Specification