Electrosurgical instrument reducing flashover

A - Human Necessities – 61 – B

Patent

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A61B 18/14 (2006.01)

Patent

CA 2442706

An electrode assembly for use in combination with an electrosurgical instrument which includes opposing end effectors and a handle for effecting movement of the end effectors relative to one another. The assembly includes a housing having one portion which is removably engageable with the electrosurgical instrument and a pair of electrodes each havng an electrically conductive sealing surface and an insulating substrate. The electrodes are removably engageable with the end effectors of the electrosurgical instrument such that the electrodes reside in opposing relation relative to one another. The insulating substrate is made from a plastic material having a high Comparative Tracking Index to reduce the incidence of flashover.

L'invention porte sur un ensemble d'électrodes qui s'utilisent avec un élément électro-chirurgical muni d'organes effecteurs terminaux opposés et d'une poignée qui entraîne le mouvement des organes effecteurs terminaux les uns par rapport aux autres. Cet ensemble est doté d'un logement comportant une partie qui peut venir en prise de manière détachable avec l'instrument électro-chirurgical, et une paire d'électrodes équipée chacune d'une surface d'étanchéité électro-conductrice et d'un substrat isolant. Les électrodes viennent en prise de manière détachable avec les organes effecteurs terminaux de l'instrument électro-chirurgical de manière que les électrodes soient opposées les unes par rapport aux autres. Le substrat isolant est constitué d'un matériau plastique à indice de cheminement comparatif élevé afin de réduire la possibilité d'apparition de contournement.

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