Permanent shape memory alloy stent

Details Permanent shape memory alloy stent Permanent shape memory alloy stent

A - Human Necessities

61

L

A61L 27/00 (2006.01) A61F 2/06 (2006.01) A61F 2/00 (2006.01)

Patent

CA 2199956

A permanent tissue supporting device, and a method for supporting tissue, wherein a stent-like member comprising a shape-memory alloy is permanently positioned to support the tissue of a tubular organ of a living body. The shape-memory alloy of the positioned stent-like member is in the martensitic state and exhibits a strain on a horizontal plateau of a stress-strain curve of the shape-memory alloy when permanently positioned in the tubular organ.

On décrit un dispositif permanent de support tissulaire et un procédé de support d'un tissu, pour lesquels un élément semblable à un extenseur, réalisé en un alliage à mémoire de forme, est disposé de façon permanente de façon à supporter le tissu d'un organe tubulaire dans un organisme vivant. L'alliage à mémoire de forme de cet élément semblable à un extenseur est à l'état martensitique et présente un allongement sur le replat horizontal de sa courbe contrainte/allongement, lorsque l'élément est disposé de façon permanente dans l'organe tubulaire.

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