System and method for implanting a replacement valve
First Claim
1. A method of percutaneously implanting a heart valve assembly, the method comprising:
- advancing the heart valve assembly crimped on a collapsed inflatable balloon of an elongated catheter of a delivery system to an implantation site, the inflatable balloon comprising a distal end directly connected to a contoured nose cone at a distal end of the elongated catheter; and
expanding the inflatable balloon to implant the heart valve assembly at the implantation site;
wherein the contoured nose cone has a profile that radially extends beyond a heart valve assembly crimped on the inflatable balloon.
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Accused Products
Abstract
A system for percutaneously inserting a prosthesis containing a biological replacement for a defective valve into an implantation site through a body lumen. The system contains a balloon catheter upon which a collapsable stent containing a venous valvular replacement is mounted. A protective shield is slidably mounted upon the catheter that is movable between a closed position over the balloon and an open position wherein the balloon can be inflated to expand the stent. A central lumen runs through the catheter that is formed of stainless steel. The central lumen provides a one to one torque ratio between the proximal end of the catheter and the distal end to enhance the steerability of the catheter. The vein of the replacement is reduced in thickness between 50% and 90% of its original size thereby considerably reducing the size of the replacement package when the stem is collapsed upon the balloon of the catheter.
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Citations
17 Claims
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1. A method of percutaneously implanting a heart valve assembly, the method comprising:
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advancing the heart valve assembly crimped on a collapsed inflatable balloon of an elongated catheter of a delivery system to an implantation site, the inflatable balloon comprising a distal end directly connected to a contoured nose cone at a distal end of the elongated catheter; and expanding the inflatable balloon to implant the heart valve assembly at the implantation site; wherein the contoured nose cone has a profile that radially extends beyond a heart valve assembly crimped on the inflatable balloon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of percutaneously implanting a heart valve assembly, the method comprising:
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advancing the heart valve assembly crimped on a collapsed inflatable balloon of an elongated catheter of a delivery system to an implantation site, the inflatable balloon comprising a distal end directly connected to a contoured nose cone at a distal end of the elongated catheter; and expanding the inflatable balloon to implant the heart valve assembly at the implantation site; wherein the delivery system further comprises a sheath configured to slidably receive the elongated catheter, the sheath comprising a protective shield at a distal end of the sheath; wherein the protective shield comprises a distal end portion sized and shaped to afford engagement with a proximal end portion of the nose cone. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification