Electro-cautery catheter

A - Human Necessities – 61 – B

Patent

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A61B 18/14 (2006.01)

Patent

CA 2328242

This invention is an integrated catheter assembly for enabling diverse endoscopic in situ therapies. The assembly includes a catheter (12) with an irrigation fluid lumen, a distal electrode tip portion (20) that acts as a hemostat, and a cutting wire (23) for making incisions in or ablating tissue. A cutting wire hub (21) provides a sealing entrance for a cutting wire. An operator (24) enables the physician to displace the cutting wire between extended, and retracted positions. The cutting wire, and electrode are electrically isolated. The apparatus of the present invention allows the physician to make incisions in or ablate tissue using electrosurgery, irrigate tissue, and cauterize or coagulate tissue without having to remove the apparatus from the working channel of the endoscope.

la présente invention concerne un ensemble de cathéter intégré utilisé dans le cadre de divers traitements endoscopiques in situ. L'ensemble comprend un cathéter (12) avec lumière pour fluide d'irrigation, une partie distale à pointe d'électrode (20) à action hémostatique et un fil de coupe (23) pour l'incision ou l'ablation de tissus. Le fil de coupe traverse une gaine étanche (21). Grâce à un manipulateur (24), le médecin peut déplacer le fil de coupe entre des positions sorti et rentré. Le fil de coupe et l'électrode sont électriquement isolés. La présente invention permet d'effectuer des opérations d'incision ou d'ablation de tissus par électrochirurgie, d'irriguer des tissus et de procéder à une cautérisation ou à une coagulation sans devoir retirer l'appareil de la gaine de l'endoscope.

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