Vascular prosthesis
First Claim
1. A vascular prosthesis which comprises a corrugated tube (1) of textile material is characterized by presenting a pattern of a series of separate axially disposed markings (3 or 4 or 5) on the corrugations (2), the disposition of the markings being such that when the prosthesis is extended to about the predetermined correct degree of extension whereby to increase the angle between opposite sides of each corrugation the observed pattern of markings along the prosthesis changes to provide a signal that the correct degree of extension has been attained.
1 Assignment
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Accused Products
Abstract
A vascular prosthesis intended to act as a substitute blood vessel comprises a porous corrugated tube (1) of textile material presenting a pattern of a series of axially disposed markings (3,4 or 5) on the corrugations (2) so disposed that the appearance of the pattern changes when the prosthesis is extended. The change in the appearance of the pattern as the tube is extended provides an indication to the user when the prosthesis has been extended to the desirable extent.
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Citations
5 Claims
- 1. A vascular prosthesis which comprises a corrugated tube (1) of textile material is characterized by presenting a pattern of a series of separate axially disposed markings (3 or 4 or 5) on the corrugations (2), the disposition of the markings being such that when the prosthesis is extended to about the predetermined correct degree of extension whereby to increase the angle between opposite sides of each corrugation the observed pattern of markings along the prosthesis changes to provide a signal that the correct degree of extension has been attained.
Specification