Electrosurgical snare

A - Human Necessities – 61 – B

Patent

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Details

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

Patent

CA 2386839

An electrosurgical instrument includes a handle (28) with a hollow elongate configuration and an electrosurgical assembly (48) having ends disposed within the hollow handle and forming a continuous loop (33) moveable by operation of the handle between an enlarged state and a contracted state. An electrosurgical element included in the assembly has an outer surface (64), and axis (55), and a lumen extending along the axis. Transverse portions of the element define a plurality of slots (66) extending transverse to the axis and providing fluid communication between the lumen and the outer surface of the element. The element includes an insulated backbone (64) and a plurality of ribs (62) disposed to extend in space relation to each other transverse to the backbone.

Un instrument électrochirurgical comprend un manche (28) ayant une configuration oblongue creuse ainsi qu'un ensemble électrochirurgical (48) dont les extrémités sont disposées à l'intérieur du manche creux et formant une boucle continue (33) pouvant passer d'un état agrandi à un état diminué et inversement sous la commande du manche. Un élément électrochirurgical contenu dans l'ensemble présente une surface extérieure (64) et un axe (65) ainsi qu'une lumière s'étendant le long de l'axe. Des parties transversales de l'élément définissent une pluralité de fentes (66) s'étendant transversalement à l'axe et permettant une communication fluide entre la lumière et la surface extérieure de l'élément. L'élément comprend un squelette isolé (64) et une pluralité de nervures (62) disposées de manière à s'étendre en une relation espacée mutuellement et transversalement au squelette.

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