Inherent shape memory coupling for heart valve

Details Inherent shape memory coupling for heart valve Inherent shape memory coupling for heart valve

A - Human Necessities

61

F

3/120

A61F 2/24 (2006.01) A61L 27/04 (2006.01)

Patent

CA 1115455

-12- ABSTRACT A prosthetic heart valve for long-term implantation in the human body is made by using a coupling element to join a circumscribing sewing cuff to a generally tubular, rigid portion of a heart valve body. A ductile metal alloy coupling element at a temperature below its transition temperature is deformed from its original shape. Heating the coupling element to a temperature above the transition temperature, as by passing electric current therethrough, causes the coupling to try to return to its original shape and effects a secure joinder.

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