System for implanting a replacement valve
First Claim
1. A system for percutaneously inserting a biological valve prosthesis in an implantation site that includes an elongated catheter having a proximal end and a distal end, an elongated inflatable balloon mounted at the distal end of said catheter, said balloon being connected to means for inflating and deflating said balloon, a protective shield slidably mounted upon said catheter for movement between a first closed position wherein said balloon is located under the shield and a second open position wherein said shield is moved back clear of said shield to free said balloon for inflation, a center lumen passing through said catheter, said center lumen being fabricated of stainless steel tubing such that the torque ratio between the distal end and the proximal end of the catheter is about one to one.
2 Assignments
0 Petitions
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.
463 Citations
16 Claims
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1. A system for percutaneously inserting a biological valve prosthesis in an implantation site that includes
an elongated catheter having a proximal end and a distal end, an elongated inflatable balloon mounted at the distal end of said catheter, said balloon being connected to means for inflating and deflating said balloon, a protective shield slidably mounted upon said catheter for movement between a first closed position wherein said balloon is located under the shield and a second open position wherein said shield is moved back clear of said shield to free said balloon for inflation, a center lumen passing through said catheter, said center lumen being fabricated of stainless steel tubing such that the torque ratio between the distal end and the proximal end of the catheter is about one to one.
Specification