Radiation treatment of the vascular system

Details Radiation treatment of the vascular system Radiation treatment of the vascular system

A - Human Necessities

61

M

A61M 25/00 (2006.01) A61M 25/10 (2006.01) A61M 36/12 (2006.01) A61N 5/10 (2006.01)

Patent

CA 2222706

Apparatus for delivery of a treatment element (22) such as a radiation source, through a catheter (92) to a desired site in the interluminal passageways of a patient, such as the coronary artery, for inhibiting the formation of scar tissue such as may occur in restenosis following balloon angioplasty. One or more treatment elements (22), such as a capsule or pellet containing radioactive material, is positionable within the lumen (144) and movable between the proximal and distal end portions under the force of liquid flowing through the lumen. Balloon membrane (256) can be used for angioplasty.

On décrit un appareil destiné à fournir un élément (22) de traitement, tel qu'une source radique, à travers un cathéter (92) et vers un site désiré dans un passage endoluminal d'un patient, tel que l'artère coronaire, afin d'inhiber la formation d'un tissu cicatriciel, laquelle peut survenir dans une resténose suivant une angioplastie par ballonnet. On peut placer un ou plusieurs éléments de traitement (22), tels qu'une capsule ou une pastille contenant un matériau radioactif, dans le conduit interne (144) du cathéter, ces éléments étant mobiles entre les portions d'extrémité distale et proximale du cathéter sous la poussée du liquide circulant à travers ledit conduit interne. On peut utiliser une membrane gonflable (256) pour l'angioplastie.

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