Improved electrosurgical hemostatic method and device

Details Improved electrosurgical hemostatic method and device Improved electrosurgical hemostatic method and device

A - Human Necessities

61

B

A61B 18/12 (2006.01) A61B 17/072 (2006.01) A61B 18/14 (2006.01) A61B 17/115 (2006.01) A61B 17/32 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2237429

An electrosurgical instrument is provided for cauterization and/or welding of tissue of varying impedance, thickness and vascularity especially in the performance of endoscopic procedures. The instrument compresses the tissue between one pole of a bipolar energy source located on one interfacing surface, and a second interfacing surface applying pressure in a predetermined range. A second pole is located one of the two interfacing surfaces. In a preferred embodiment, the second pole is located on the same interfacing surface as the first pole and an insulator electrically isolates the two poles. A preferred application of the invention is in a cutting instrument wherein a hemostatic line is formed along a cut line using RF energy.

Est décrit un instrument électrochirurgical servant à cautériser et/ou à souder des tissus d'impédance, d'épaisseur et de vascularité variables, spécialement dans l'exécution d'interventions endoscopiques. L'instrument comprime le tissu entre un pôle d'une source d'énergie bipolaire située sur une face d'interface, et une seconde face qui exerce une pression d'une force prédéterminé. Un deuxième pôle est situé sur l'une des deux faces de l'interface. Dans une version privilégiée, le deuxième pôle est situé sur la même face de l'interface que le premier pôle, et un isolateur isole électriquement les deux pôles. Une application privilégiée de l'invention consiste en un instrument de coupe grâce auquel une ligne hémostatique est formée le long d'une ligne de coupe en utilisant une énergie RF.

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