Catheter system and method for injection of a liquid embolic...

A - Human Necessities – 61 – M

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Details

A61M 5/00 (2006.01) A61B 17/12 (2006.01) A61M 25/00 (2006.01) A61B 17/00 (2006.01)

Patent

CA 2306992

A catheter according to the present invention includes a multiple lumen catheter (10) for delivery of a liquid embolic composition through a first lumen, and delivery of a solidification agent through a second lumen. The catheter allows adjustment of the relative longitudinal position of the two lumens to control the solidification of the embolic composition within a blood vessel. The multiple lumen catheter system (10) is used by inserting the catheter endo-vascularly into an aneurysm site, and injecting a liquid embolic composition through the first lumen while injecting a solidification agent through the second lumen to wash the area of the aneurysm of blood which has become saturated with solvent, while replacing it with a fresh solidification agent. The controlled solidification of the liquid embolic composition by use of the solidification agent allows the aneurysm to be filled precisely, and rapidly even when the aneurysm is located such that gravity does not cause the liquid embolic composition to flow into the aneurysm.

Cathéter (10) selon la présente invention qui comporte plusieurs passages pour l'administration d'une composition d'embolisation liquide par un premier passage, et l'administration d'un agent de solidification par un second passage. Ledit cathéter permet l'ajustement de la position longitudinale relative des deux passages pour réguler la solidification de la composition d'embolisation à l'intérieur du vaisseau sanguin. On utilise ledit système (10) de cathéter à plusieurs passages en introduisant le cathéter de manière intravasculaire sur un site d'anévrisme, en injectant une composition d'embolisation liquide par le premier passage et en injectant en même temps un agent de solidification par le second passage pour débarrasser la zone de l'anévrisme du sang qui est devenu saturé de solvant et remplacer ce sang par un agent de solidification neuf. La solidification régulée de la composition d'embolisation liquide à l'aide de l'agent de solidification permet de remplir l'anévrisme avec précision et rapidité, même lorsque cet anévrisme est situé de telle manière que la gravité ne provoque pas l'écoulement de la composition d'embolisation liquide dans l'anévrisme.

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