Rapid-exchange balloon catheter shaft and method

Details Rapid-exchange balloon catheter shaft and method Rapid-exchange balloon catheter shaft and method

A - Human Necessities

61

M

A61M 25/10 (2006.01) A61F 2/84 (2006.01) A61M 25/00 (2006.01)

Patent

CA 2675209

A balloon catheter or stent delivery system for medical treatment of a patient has a proximal hub, a balloon, and an improved shaft design The catheter shaft has a rapid-exchange configuration, and a tubular outer body that includes a hypotube extending from the catheter proximal end to a position at or near a proximal leg of the balloon An inner tubular body defines a guidewire lumen extending from a distal guidewire port at the catheter distal end to a proximal port located at a position between the balloon and the hub The hypotube has an aperture for accepting the inner body proximal end, and a circumferential cut pattern The cut pattern adds flexibility, and may extend from the hypotube distal end to a position proximal of the proximal guidewire port

L'invention porte sur un système d'administration de cathéter ou stent à ballonnet pour le traitement médical d'un patient. Ce système comporte un moyeu proximal, un ballonnet et un type de tige perfectionné. La tige de cathéter a une configuration d'échange rapide, et un corps externe tubulaire comprenant un hypotube s'étendant de l'extrémité proximale du cathéter à une position se trouvant au niveau ou proche d'une patte proximale du ballonnet. Un corps tubulaire interne définit une lumière de fil guide s'étendant d'un orifice de fil guide distal au niveau de l'extrémité distale du cathéter à un orifice proximal situé à une position entre le ballonnet et le moyeu. L'hypotube a une ouverture pour accepter l'extrémité proximale du corps interne, et un motif de découpe périphérique. Le motif de découpe ajoute de la flexibilité, et peut s'étendre de l'extrémité distale de l'hypotube à une position proche du l'orifice de fil guide proximal.

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