System for controlled delivery of stents and grafts
First Claim
1. Apparatus for percutaneously delivering a self-expanding prosthesis to a target site within a patient'"'"'s vascular system comprising:
- (a) an outer tubular guiding catheter having a proximal end, a distal end and a lumen extending therebetween;
(b) an inner tubular pusher catheter having a proximal end, a distal end and lumen extending therebetween, the inner pusher catheter having an outer diameter sized to slidingly fit within the lumen of the guiding catheter; and
(c) an elongate, flexible member coaxially insertable through the lumen of the inner pusher catheter, said elongate, flexible member having a proximal end and a distal end, said distal end having a first bead member affixed thereto sized to at least partially fit within the lumen of the inner pusher catheter at said distal end of the inner pusher catheter when a proximally directed tension force is applied to the elongate flexible member with respect to the inner pusher catheter.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention provides a delivery mechanism for percutaneously routing a stent or graft through the vascular system and procedures for addressing an aneurysm or an otherwise damaged vessel. The delivery system includes an outer tubular guide catheter 20, an inner tubular delivery (pusher) catheter 14 coaxially disposed and slidable relative to the outer guide catheter and an elongated flexible wire or cable 26 that is coaxially insertable through the lumen of the inner tubular catheter and that has a frusto-conical bead affixed at the distal end thereof which is sized to at least partially fit within the lumen of the inner pusher catheter when a proximally directed tension force is applied between the elongated flexible wire or cable 26 with respect to the pusher catheter 14. By inserting a compressed coil spring between a proximal end portion of the pusher catheter 14 and the proximal end portion of the cable 26, the requisite clamping force is maintained to secure the stent or graft to the distal end of the pusher catheter until the compression spring force is removed. With the stent or graft clamped to the distal end of the inner pusher catheter, it can be drawn within the lumen of the outer guide catheter for delivery therewith to the target site.
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Citations
43 Claims
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1. Apparatus for percutaneously delivering a self-expanding prosthesis to a target site within a patient'"'"'s vascular system comprising:
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(a) an outer tubular guiding catheter having a proximal end, a distal end and a lumen extending therebetween;
(b) an inner tubular pusher catheter having a proximal end, a distal end and lumen extending therebetween, the inner pusher catheter having an outer diameter sized to slidingly fit within the lumen of the guiding catheter; and
(c) an elongate, flexible member coaxially insertable through the lumen of the inner pusher catheter, said elongate, flexible member having a proximal end and a distal end, said distal end having a first bead member affixed thereto sized to at least partially fit within the lumen of the inner pusher catheter at said distal end of the inner pusher catheter when a proximally directed tension force is applied to the elongate flexible member with respect to the inner pusher catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. Apparatus for percutaneously delivering a self-expanding prosthesis to a target site within a patient'"'"'s vascular system comprising:
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(a) a tubular inner catheter having a proximal end, a distal end and lumen extending therebetween, the inner catheter having an outer diameter adapted to slidingly fit within the lumen of a guiding catheter; and
(b) an elongate, flexible member coaxially insertable through the lumen of the inner tubular catheter, said elongate, flexible member having a proximal end and a distal end, said distal end having a first bead member affixed thereto sized to at least partially fit within the lumen of the inner tubular catheter at said distal end of the inner tubular catheter when a proximally directed tension force is applied to the elongate flexible member with respect to the inner tubular catheter. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A method for controllably delivering a braided, self-expanding tubular prosthesis to a selected site in the vascular system comprising the steps of:
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(a) providing the combination of;
(i) a flexible tubular inner catheter having a proximal end, a distal end and a lumen extending therebetween, the inner catheter having an outer diameter adapted to slidingly fit within the lumen of a guiding catheter, (ii) an elongate, flexible member coaxially insertable through the lumen of the inner tubular catheter, said elongate flexible member having a proximal end and a distal end, said distal end having a first bead member affixed thereto sized to at least partially fit within the lumen of the inner tubular catheter at said distal end of the inner tubular catheter when a proximally directed tension force is applied to the elongate flexible member with respect to the inner tubular catheter, (iii) a braided tubular prosthesis with the proximal ends of individual strands comprising the prosthesis captured between the first bead member and the distal end of the inner tubular catheter;
(b) feeding the inner tubular catheter with the braided tubular prosthesis attached through a lumen of the guiding catheter and out a distal end thereof;
(c) moving the elongate flexible member relative to the tubular inner catheter to release the tubular prosthesis from the distal end of the tubular inner catheter. - View Dependent Claims (41)
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42. A method for controllably delivering a braided, self-expanding tubular prosthesis to a selected site in the vascular system comprising the steps of:
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(a) providing the combination of;
i) an outer guiding catheter;
ii) A flexible, tubular inner catheter having a proximal end, a distal end and a lumen extending therebetween the inner catheter having an outer diameter adapted to slidingly fit within a lumen of the guiding catheter, iii) an elongate, flexible member coaxially insertable through the lumen of the inner tubular catheter, said elongate flexible member having a proximal end and a distal end, said distal end having a first bead member affixed thereto sized to at least partially fit within the lumen of the inner tubular catheter at said distal end of the inner tubular catheter when a proximally directed tension force is applied to the elongate flexible member with respect to the inner tubular catheter, (iv) a braided tubular prosthesis with the proximal ends of individual strands comprising the prosthesis captured between the first bead member and the distal end of the inner tubular catheter (b) routing the guiding catheter through the vascular system until a distal end of the guiding catheter is proximate said selected site;
(c) advancing the tubular inner catheter, elongate flexible member and braided tubular prosthesis through the lumen of the outer guiding catheter until the tubular prosthesis is disposed at the distal end of the guiding catheter;
(d) manipulating the inner tubular catheter relative to the guiding catheter to expose the braided tubular prosthesis out from the distal end of the guiding catheter;
(e) releasing the braided tubular prosthesis from the distal end of the inner tubular catheter when the braided tubular prosthesis is properly located at the selected site or drawing the braided tubular prosthesis back into the guiding catheter when the braided tubular prosthesis is not properly located at the selected site; and
(f) repeating step (e) until the tubular prosthesis is properly located at the treatment site.
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43. A method for controllably delivering a braided, self-expanding tubular prosthesis to a selected site in the vascular system comprising the steps of:
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(a) providing the combination of;
i) an outer guiding catheter;
ii) an elongated guidewire;
iii) a flexible, tubular inner catheter having a proximal end, a distal end and a lumen extending therebetween the inner catheter having an outer diameter adapted to slidingly fit within a lumen of the guiding catheter, iv) an elongate, flexible, tubular member coaxially insertable through the lumen of the inner tubular catheter, said elongate flexible member having a proximal end and a distal end and a lumen extending therebetween for receiving the guidewire therethrough, said distal end having a first bead member affixed thereto sized to at least partially fit within the lumen of the inner tubular catheter at said distal end of the inner tubular catheter when a proximally directed tension force is applied to the elongate flexible member with respect to the inner tubular catheter, (v) a braided tubular prosthesis with the proximal ends of individual strands comprising the prosthesis captured between the first bead member and the distal end of the inner tubular catheter (b) routing the guiding catheter through the vascular system until a distal end of the guiding catheter is proximate said selected site;
(c) advancing the guidewire through the guiding catheter;
(d) advancing the tubular inner catheter, elongate tubular flexible member and braided tubular prosthesis over the guidewire and through the lumen of the outer guiding catheter until the tubular prosthesis is disposed at the distal end of the guiding catheter;
(e) manipulating the inner tubular catheter relative to the guiding catheter to expose the braided tubular prosthesis out from the distal end of the guiding catheter;
(f) releasing the braided tubular prosthesis from the distal end of the inner tubular catheter when the braided tubular prosthesis is properly located at the selected site or drawing the braided tubular prosthesis back into the guide catheter when the braided tubular prosthesis is not properly located at the selected site;
(g) repeating step (f) until the tubular prosthesis is properly located at the treatment site. (h) removing the guiding catheter, the inner catheter, the flexible member and the guidewire from the vascular system.
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Specification