Improved flexible source wire for localized internal...

A - Human Necessities – 61 – N

Patent

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Details

A61N 5/00 (2006.01)

Patent

CA 2237168

A flexible source wire (10) is provided containing a radioactive source (160) that is capable of maneuvering through a tortuous narrow passage to a treatment site within the body. This source wire (10) includes an elongated flexible housing tube (120) with its proximal end (140) (i.e., the treatment end) modified to receive a radioactive core (160). The preferred embodiment of the source wire (10) is constructed from a material exhibiting little or no memory retention when bent such as certain nickel/titanium alloys. Both ends (140, 150) of the source wire (10) are sealed and the proximal end (140) of the source wire (10) is rounded to allow ease of movement as it travels through the bends and turns in the body.

Cette invention concerne un fil de source souple (10) contenant une source radioactive (160) qui est capable de se faufiler dans un passage étroit et sinueux vers un site de traitement situé à l'intérieur du corps. Le fil de source (10) comprend un tube protecteur (120) souple allongé dont l'extrémité proximale (140) (c'est-à-dire l'extrémité de traitement) est modifiée pour recevoir un coeur radioactif (160). La forme de réalisation préférée du fil de source (10) est construite à partir d'un matériau qui ne garde pas, ou qui garde très peu, la mémoire de la forme lorsqu'on le plie, comme c'est le cas de certains alliages nickel/titane. Les deux extrémités (140, 150) du fil de source (10) sont soudées et l'extrémité proximale (140) du fil de source (10) est enroulée pour faciliter son mouvement lorsqu'il se déplace en parcourant les passages sinueux à l'intérieur du corps.

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