STENT DELIVERY CATHETER SYSTEM WITH HIGH TENSILE STENGTH
First Claim
1. A stent delivery catheter system, comprisinga) an elongated delivery catheter having an inner tubular member, a stent holder region, a guidewire lumen-defining tubular member extending within at least a distal section of the inner tubular member, a distal tip at a distal end of the guidewire lumen-defining tubular member, an outer tubular member which has a stent restraining region and which is adapted for axial movement with respect to the stent holder region to transition from an advanced configuration surrounding the stent holder region to a proximally retracted configuration, and having a reinforcing tether member secured to the inner tubular member, which has a distal end length extending helically in the distal tip member or proximally adjacent to the proximal end of the distal tip member, and which extends axially on the guidewire-defining tubular member from the proximal end of the helical end length such that the tether member is configured to enhance the tensile strength of the catheter;
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1 Assignment
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Accused Products
Abstract
A stent delivery catheter system having a reinforcing tether member secured to the catheter such that the catheter is provided with an improved combination of an enhanced tensile strength together with other catheter performance characteristics such as low profile and high flexibility.
33 Citations
20 Claims
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1. A stent delivery catheter system, comprising
a) an elongated delivery catheter having an inner tubular member, a stent holder region, a guidewire lumen-defining tubular member extending within at least a distal section of the inner tubular member, a distal tip at a distal end of the guidewire lumen-defining tubular member, an outer tubular member which has a stent restraining region and which is adapted for axial movement with respect to the stent holder region to transition from an advanced configuration surrounding the stent holder region to a proximally retracted configuration, and having a reinforcing tether member secured to the inner tubular member, which has a distal end length extending helically in the distal tip member or proximally adjacent to the proximal end of the distal tip member, and which extends axially on the guidewire-defining tubular member from the proximal end of the helical end length such that the tether member is configured to enhance the tensile strength of the catheter; - and
b) a self-expanding stent which is in a collapsed configuration surrounding the stent holder region of the catheter with the catheter outer tubular member in the advanced configuration, and which is configured to be deployed by radially self-expanding from the collapsed configuration upon movement of the catheter outer tubular member to the retracted configuration. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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4. A stent delivery catheter system, comprising
a) an elongated delivery catheter having an inner tubular member, a stent holder region, a guidewire lumen-defining tubular member extending within at least a distal section of the inner tubular member, a distal tip at a distal end of the guidewire lumen-defining tubular member, an outer tubular member which has a stent restraining region and which is adapted for axial movement with respect to the stent holder region to transition from an advanced configuration surrounding the stent holder region to a proximally retracted configuration, and having a reinforcing tether member secured to the distal tip member and secured to the inner tubular member, which extends at least in part helically in the distal tip member, and which extends axially from the proximal end of the distal tip member on the guidewire-defining tubular member such that the tether member is configured to enhance the tensile strength of the catheter; - and
b) a self-expanding stent which is in a collapsed configuration surrounding the stent holder region of the catheter with the catheter outer tubular member in the advanced configuration, and which is configured to be deployed by radially self-expanding from the collapsed configuration upon movement of the catheter outer tubular member to the retracted configuration.
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19. A stent delivery catheter system, comprising
a) an elongated delivery catheter having an inner member, a stent holder region, a guidewire lumen-defining tubular member extending within the stent holder region, a distal tip at a distal end of the guidewire lumen-defining tubular member, an outer tubular member which has a stent restraining region and which is adapted for axial movement with respect to the stent holder region to transition from an advanced configuration surrounding the stent holder region to a proximally retracted configuration, and having a reinforcing tether member which extends axially on at least a portion of the guidewire lumen-defining tubular member from a distal end of the inner tubular member to a proximal end of the distal tip member and which has an annular distal end extending around the circumference of the guidewire lumen-defining tubular member; - and
b) a self-expanding stent which is in a collapsed configuration surrounding the stent holder region of the catheter with the catheter outer tubular member in the advanced configuration, and which is configured to be deployed by radially self-expanding from the collapsed configuration upon movement of the catheter outer tubular member to the retracted configuration. - View Dependent Claims (20)
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Specification