Alternative current pathways for bipolar surgical cutting tool

Details Alternative current pathways for bipolar surgical cutting tool Alternative current pathways for bipolar surgical cutting tool

A - Human Necessities

61

B

A61B 18/12 (2006.01) A61B 17/072 (2006.01) A61B 17/32 (2006.01) A61B 18/14 (2006.01)

Patent

CA 2206440

A bipolar electrosurgical tool comprises a retractable cutting element (144) movable along a cutting path, and an electrical energy supply source (26) which communicates electrical energy (e.g., radio frequency energy) through one or more energy delivering electrodes associated with a tissue affecting portion (118) of the tool to tissue adjacent the electrodes. One or more additional electrodes, such as return electrodes that form a second pole of the bipolar electrical connection, are also associated with the tissue affecting portion (118), and are electrically isolated from the energy delivering electrode. Various combinations of electrically conductive and electrically isolated elements associated with the tissue affecting portion (118) of the device can be used as the two poles of the bipolar system.

Un instrument d'électrochirurgie bipolaire comporte un élément coupant rétractable (144) mobile le long d'un chemin de coupe, et une source (26) d'alimentation en énergie électrique transmettant à un tissu proche des électrodes de l'énergie électrique (par exemple un courant H.F.) grâce à une ou plusieurs électrodes d'apport d'énergie associées à une zone d'intervention tissulaire (118) de l'instrument. Une ou plusieurs électrodes supplémentaires, telles que des électrodes de retour constituant un second pole du circuit électrique, sont également associées à la zone d'interventin tissulaire (118), mais elles sont électriquement isolées de l'électrode d'apport d'énergie. Pour former les deux pôles du système bipolaire, il est possible d'utiliser différentes combinaisons d'éléments électro-conducteurs et d'éléments électriquement isolés associés à la zone d'intervention tissulaire (118) du dispositif.

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