Apparatus for widening a stenosis
First Claim
1. An apparatus for widening a stenosis in a body cavity, the apparatus comprising an endoprosthesis fashioned of a memory alloy and having a substantially cylindrical outer contour, a sleeve surrounding and radially supporting the endoprosthesis, an endoprosthesis applicator for the endoprosthesis adapted to be axially movable in the sleeve, said endoprosthesis being positioned radially between the sleeve and the applicator, and wherein said applicator is provided with a slide portion located within the endoprosthesis, said slide portion projects radially outwardly of the applicator and is adapted to act in an intermediate area of the endoprosthesis for sliding the endoprosthesis out of the sleeve.
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Abstract
The invention relates to an apparatus for widening a stenosis in an elongated body cavity such as an artery, the urethra, the ureter, a bile duct or the like, characterized by an endoprosthesis made from a memory alloy with a substantially cylindrical jacket-like outer contour with a lock surrounding and radially holding together the endoprosthesis and with an applicator for the endoprosthesis. It is important that the apparatus is supplied in such a way that in the delivery pack the endoprosthesis is held radially from the outside in its compressed (low temperature) position, which is ensured by the above-described construction of the apparatus according to the invention.
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Citations
15 Claims
- 1. An apparatus for widening a stenosis in a body cavity, the apparatus comprising an endoprosthesis fashioned of a memory alloy and having a substantially cylindrical outer contour, a sleeve surrounding and radially supporting the endoprosthesis, an endoprosthesis applicator for the endoprosthesis adapted to be axially movable in the sleeve, said endoprosthesis being positioned radially between the sleeve and the applicator, and wherein said applicator is provided with a slide portion located within the endoprosthesis, said slide portion projects radially outwardly of the applicator and is adapted to act in an intermediate area of the endoprosthesis for sliding the endoprosthesis out of the sleeve.
Specification