Medical stents for body lumens exhibiting peristaltic motion

Details Medical stents for body lumens exhibiting peristaltic motion Medical stents for body lumens exhibiting peristaltic motion

A - Human Necessities

61

F

A61F 2/04 (2006.01) A61F 2/06 (2006.01) A61F 2/00 (2006.01)

Patent

CA 2146156

A steal (100) for reinforcement of the lumen of a peristaltic organ, and methods for forming, shaping and heat treating of such a steal. The steal (100) is formed by knitting preferably a nitinol wire into a pattern of overlapping loops selected such that from a relaxed state each row of loops may shift axially relative to and independently of the rows on either side. A steal is also shown which comprises two resilient cylindrical mesh layers (532, 534) and a semi-permeable compliant membrane (530) such as expanded polytetrafluoroethylene, sandwiched between. A method is also shown of manufacturing a delivery system for a resilient tubular device such as a steal so that the device can be inserted into the body in a substantially reduced diameter.

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