Prosthesis comprising an expansible or contractile tubular body
First Claim
1. An implantation device for complete insertion and implantation of a prosthesis in a body vessel comprising in combination:
- (a) the prosthesis having a radially and axially flexible, elastic tubular body with a predetermined diameter that is variable under axial movement of ends of the body relative to each other and which is composed of a plurality of individually rigid but flexible and elastic thread elements each of which extends in helix configuration along the center line of the body as a common axis, the flexible and elastic elements defining radially self-expanding body, said body provided by a first number of elements having a common direction of winding but be axially displaced relative to each other and crossing a second number of elements also axially displaced relative to each other but having an opposite direction of winding, the crossing of the first and second elements defining at least an obtuse angle; and
(b) load applying means placing said tubular body in a reduced diameter state prior to the insertion, said load applying means removed from said body after said insertion of the tubular body so as to permit said tubular body to radially self-expand in the vessel.
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Abstract
A prosthesis for transluminal implantation comprising a flexible tubular body which has a diameter that is variable by axial movement of the ends of the body relative to each other and which is composed of several individual rigid but flexible thread elements each of which extends in helix configuration with the center line of the body as a common axis, a number of elements having the same direction of winding but being axially displaced relative to each other crossing a number of elements also axially displaced relative to each other but having the opposite direction of winding; and method for transluminal implantation.
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Citations
12 Claims
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1. An implantation device for complete insertion and implantation of a prosthesis in a body vessel comprising in combination:
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(a) the prosthesis having a radially and axially flexible, elastic tubular body with a predetermined diameter that is variable under axial movement of ends of the body relative to each other and which is composed of a plurality of individually rigid but flexible and elastic thread elements each of which extends in helix configuration along the center line of the body as a common axis, the flexible and elastic elements defining radially self-expanding body, said body provided by a first number of elements having a common direction of winding but be axially displaced relative to each other and crossing a second number of elements also axially displaced relative to each other but having an opposite direction of winding, the crossing of the first and second elements defining at least an obtuse angle; and (b) load applying means placing said tubular body in a reduced diameter state prior to the insertion, said load applying means removed from said body after said insertion of the tubular body so as to permit said tubular body to radially self-expand in the vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification