Endoluminal prosthesis deployment devices and methods
First Claim
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1. A catheter system for deploying an endoluminal prosthesis in a body lumen of a patient, comprising:
- a flexible elongate chassis having a proximal end, a distal end, a distal section and an overall column strength sufficient for advancement of the chassis through a body lumen of a patient;
a self-expanding tubular endoluminal prosthesis disposed in a constrained state over the distal section of the chassis; and
a thin, flexible, resilient extension comprisinga proximal end which is secured in fixed relation to the chassis,a distal end which is disposed radially outward from an outside surface of the chassis and distal of the proximal end of the extension; and
wherein the extension extends through a wall of a distal end of the endoluminal prosthesis with the extension in a radially constrained state such that the extension at least partially captures a distal segment of the endoluminal prosthesis and restricts proximal displacement of the endoluminal prosthesis relative to the chassis, wherein the extension comprises an s-shape in an unconstrained relaxed state, and wherein a proximal most deflection of the s-shape of the extension extends away from the chassis and a distal most deflection of the s-shape of the extension extends towards the chassis.
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Abstract
Catheter systems and methods for deployment of an endoluminal prosthesis in a body lumen of a patient while maintaining control of a position of the endoluminal prosthesis during the deployment process. Some of the systems and methods are configured to minimize frictional forces of components of the catheter systems during deployment procedures.
72 Citations
19 Claims
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1. A catheter system for deploying an endoluminal prosthesis in a body lumen of a patient, comprising:
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a flexible elongate chassis having a proximal end, a distal end, a distal section and an overall column strength sufficient for advancement of the chassis through a body lumen of a patient; a self-expanding tubular endoluminal prosthesis disposed in a constrained state over the distal section of the chassis; and a thin, flexible, resilient extension comprising a proximal end which is secured in fixed relation to the chassis, a distal end which is disposed radially outward from an outside surface of the chassis and distal of the proximal end of the extension; and wherein the extension extends through a wall of a distal end of the endoluminal prosthesis with the extension in a radially constrained state such that the extension at least partially captures a distal segment of the endoluminal prosthesis and restricts proximal displacement of the endoluminal prosthesis relative to the chassis, wherein the extension comprises an s-shape in an unconstrained relaxed state, and wherein a proximal most deflection of the s-shape of the extension extends away from the chassis and a distal most deflection of the s-shape of the extension extends towards the chassis. - 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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Specification