Catheter for maneuvering radioactive source wire to site of...

A - Human Necessities – 61 – N

Patent

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Details

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

Patent

CA 2199967

An apparatus for treating an occlusion or constriction, such as a stenosis (30) in a blood vessel (26) or other conduit in the body, as well as an apparatus for treating bodily disease (e.g., a tumor or cancerous area) occurring around a conduit or duct in the body. The apparatus includes a catheter (12) which is correctly positioned within a conduit of the body utilizing a guide wire (16). The guide wire (16) would pass through the entire length of the catheter (12), or a portion of the length of the catheter, and would exit the catheter (12) through a constriction plug affixed to the end of the catheter (12). A radioactive treatment source wire (38) is then introduced into the catheter (12) and is maneuvered to the site of treatment. The constriction plug (88) is provided with an internal diameter which is less than the diameter of the radioactive source wire (38), but greater than the diameter of the guide wire (16). This constriction plug (88) would prevent the radioactive source wire (38) from remaining in the body after the catheter (12) has been removed.

La présente invention concerne un dispositif de traitement des occlusions ou des constrictions, telles que la sténose d'un vaisseau sanguin (26) ou d'une autre voie anatomique. L'invention concerne également un appareil permettant de traiter une lésion, par exemple une tumeur ou une zone cancéreuse, se présentant autour d'une voie ou d'un canal anatomique. L'appareil comporte un cathéter (12) qu'un fil-guide (16) permet de positionner correctement à l'intérieur d'une voie anatomique. Ce fil-guide (16) doit normalement traverser le cathéter (12) sur tout sa longueur ou une partie de celle-ci, et ressortir du cathéter (12) par un embout à constriction fixé à l'autre extrémité du cathéter (12). Le fil de radiothérapie (38) peut alors être introduit dans le cathéter (12), à la suite de quoi des manipulations permettent d'amener le fil jusqu'au site de traitement. L'embout à constriction (88) présente un diamètre intérieur inférieur au diamètre du fil de radiothérapie (38), mais supérieur au diamètre du fil-guide (16). L'embout à constriction (88) doit normalement empêcher le fil de radiothérapie (38) de rester dans le corps après retrait du cathéter (12).

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