Sutures utilizing shape memory alloys

Details Sutures utilizing shape memory alloys Sutures utilizing shape memory alloys

A - Human Necessities

61

B

A61B 17/00 (2006.01) A61B 17/06 (2006.01) A61B 17/064 (2006.01) A61F 2/00 (2006.01)

Patent

CA 2076672

A suture and a suturing method are set forth for suturing a wound in the tissue of a patient and defined by tissue edges. The suture comprises an alloy member having a first end portion, a second end portion, and a first undeformed shape. It is deformable into a second deformed shape. The member has the property of recovering from its second shape towards its first shape upon the second shape being subjected to specified conditions. The first shape is a suturing loop adapted to draw and hold the tissue edges defining the wound together. The second shape is adapted to allow the member to be drawn through the tissue in position for the loop to form. The method comprises inserting such a member while it is in its second shape into position for it to assume its first suturing loop shape and subjecting it to conditions which cause it to recover towards its first shape.

Une suture (10) et un procédé de suture permettent de suturer une plaie (20) dans les tissus (24) d'un patient définie par des bords (20). La suture comprend un élément en alliage avec une première partie terminale (16), une deuxième partie terminale (18) et une première forme non déformée (12) capable de se déformer jusqu'à présenter une deuxième forme déformée. L'élément est capable de se retransformer de sa deuxième forme lorsque la deuxième forme est soumise à certaines conditions spécifiques. La première forme constitue une boucle de suture qui tire et maintient ensemble les bords du tissu qui définissent la plaie. La deuxième forme permet de tirer l'élément à travers le tissu et de le placer dans la position où la boucle se forme. Selon le procédé, on introduit l'élément dans sa deuxième forme jusqu'à la position où il doit assumer sa première forme de boucle de suture, puis on le soumet aux conditions qui l'amènent à reprendre sa première forme.

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