Plication device with formable linear fastener for use in...

A - Human Necessities – 61 – B

Patent

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A61B 17/064 (2006.01) A61B 17/122 (2006.01) A61B 17/128 (2006.01) A61B 17/00 (2006.01)

Patent

CA 2740040

A system for the treatment of mitral valve regurgitation by reshaping the mitral valve annulus using one or more plications of annular tissue each fixed by a retaining clip is described. The system includes four devices to achieve such percutaneous direct plication annuloplasty. The first is a prolapsable crossing catheter. Second, a deflecting guide catheter is used to provide a means for guiding the plication device into proper position at the subvalvular region of the mitral valve annulus. The plication device is then used to make placations in the subvalvular region of the mitral valve annulus. Fourth, a formable linear retainer clip is deployed by the plication device in order to retain the plicated tissue in the plicated form. The formable linear retainer is formed into a reverse "C" clip by the jaws of the plication device acting in conjunction with a retainer pusher.

L'invention porte sur un système de traitement d'une régurgitation de valvule mitrale par refaçonnage de l'anneau de valvule mitrale à l'aide d'une ou plusieurs plicatures de tissu annulaire, chacune fixée par une pince de retenue. Le système comprend quatre dispositifs afin d'obtenir une telle annuloplastie par plicature directe percutanée. Le premier est un cathéter transversal pouvant faire l'objet d'un prolapsus. Ensuite, on utilise un cathéter déflecteur de guidage pour fournir un moyen de guidage du dispositif de plicature dans une position appropriée dans la région subvalvulaire de l'anneau de valvule mitrale. On utilise ensuite le dispositif de plicature pour effectuer des plicatures dans la région subvalvulaire de l'anneau de valvule mitrale. Ensuite, on déploie une pince de retenue linéaire formable par le dispositif de plicature afin de retenir le tissu plicaturé dans la forme plicaturée. On forme le dispositif de retenue linéaire formable selon une pince en « C » inversé par les mâchoires du dispositif de plicature agissant conjointement avec un poussoir de retenue.

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