Apparatus and method for engrafting a blood vessel

Details Apparatus and method for engrafting a blood vessel Apparatus and method for engrafting a blood vessel

A - Human Necessities

61

F

A61F 2/06 (2006.01)

Patent

CA 2235675

A method and apparatus for engrafting a blood vessel (34) is disclosed. The apparatus includes a hollow tubular graft (15) of a preselected cross section having a proximal (11) and distal (12) end containing compressible and expandable nitinol springs (11, 12) and connecting bars (13) to facilitate physical communication between both springs (11, 12). Furthermore, the apparatus contains a transport and deployment means for delivering said hollow tubular graft (15) to an engrafting site within a blood vessel (34). The transport and deployment apparatus is comprised of an insertion catheter (31) having a graft balloon (32) and a tip balloon (32a), as well as multiple inner tracks for injection of fluid into said balloons (32, 32a) and the blood vessel (34) interior. The method includes transport and deployment of said graft (15) as well as non surgical movement and removal of said graft (15) in the event of misplacement.

L'invention porte sur une technique et un appareil permettant d'effectuer une greffe sur un vaisseau sanguin (34). Cet appareil comporte un transplant tubulaire creux (15) d'une section transversale présélectionnée possédant des extrémités proximale (11) et distale (12) contenant des ressorts en nitinol (11, 12), compressibles et expansibles, ainsi que des tiges de connexion (13) afin de faciliter une communication physique entre les deux ressorts (11, 12). L'appareil comporte, de surcroît, des organes de transport et de déploiement permettant d'amener ledit transplant tubulaire creux (15) sur un site de greffe à l'intérieur d'un vaisseau sanguin (34). Cet équipement de transport et de déploiement est placé dans un cathéter pour insertion (31) pourvu d'un ballonnet de transplant (32) et d'un ballonnet d'extrémité (32a) ainsi que de plusieurs voies internes servant à l'injection de fluide dans les ballonnets (32, 32a) et l'intérieur du vaisseau sanguin (34). La technique consiste en un transfert et un déploiement dudit transplant (15), en un déplacement non chirurgical et un retrait du transplant en cas de pose défectueuse.

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