Systems and methods for clot disruption and retrieval

Details Systems and methods for clot disruption and retrieval Systems and methods for clot disruption and retrieval

A - Human Necessities

61

B

A61B 17/22 (2006.01) A61M 25/00 (2006.01) A61M 29/00 (2006.01)

Patent

CA 2392207

Occlusive material, notably thrombus or clot, can block body cavities. Treatment requires disrupting, collecting and removing the material. A catheter for removing occlusive material from a body lumen is provided that has a catheter body having a proximal end, a distal end, and a lumen therethrough, a radially expansible positioning cage near the distal end of the catheter body, and a radially expansible macerator configured to break up occlusive material within the cage and draw the material into the catheter body lumen. The macerator includes a shaped wire having a spiral geometry.

La thrombectomie et d'autres traitements sont effectués au moyen d'un cathéter (12) comportant une cage de positionnement (26) et un broyeur d'organes (40) situé à l'intérieur de la cage de positionnement. Ce cathéter est indroduit dans une lumière anatomique cible, généralement un vaisseau sanguin, et une cage de positionnement déployée sur un site de traitement. Le broyeur d'organes est ensuite actionné de manière à détruire un thrombus, un caillot ou d'autres matières occlusives au niveau du site de traitement. Le cathéter est également utilisé afin de collecter et de retirer la matière perturbatrice de la lumière anatomique. Dans des exemples particuliers, le broyeur d'organes radialement extensible est éventuellement pivoté et/ou axialement coulissé dans la cage de positionnement afin de provoquer la destruction de la matière occlusive.

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