Coated electrosurgical electrode and method of manufacture

Details Coated electrosurgical electrode and method of manufacture Coated electrosurgical electrode and method of manufacture

A - Human Necessities

61

B

A61B 18/14 (2006.01)

Patent

CA 2227236

A design and method of manufacture are disclosed for an electrosurgical electrode (10) with a silicone coating. The coating resists the build-up of eschar. The silicone material is thick enough in the flat area of the blade to withstand the electrosurgical voltage without breakdown. The electrosurgical current path is primarily through the blade edges (15) and tip. The flat of the blade remains insulated under most conditions. The relatively thick coating also provides high tear strength and added durability. The composition of the electrode (10) coatings may include silicone elastomers (11) in the form of adhesives, dispersions, or liquid rubbers. The coating composition may also contain adhesion promoters, heat stabilizers, plasticizers, release enhancers, cross-linking agents, and colorants. Several methods of manufacture are illustrated by way of examples.

Cette invention concerne la conception et le procédé de fabrication d'une électrode électrochirurgicale (10) recouverte d'un revêtement silicone. Le revêtement empêche la formation d'escarres. Le matériau silicone est suffisamment épais dans la zone plate de la lame pour supporter sans décharge disruptive la tension électrochirurgicale. Le chemin du courant électrochirurgical passe principalement par les bords (15) et l'extrémité de la lame. Le plat de la lame reste isolé dans la plupart des conditions. Le revêtement relativement épais assure également une résistance élevée au déchirement et une durabilité accrue. La composition des revêtements pour l'électrode (10) peut comprendre des élastomères silicone (11) sous forme d'adhésifs, de dispersions ou de caoutchoucs liquides. La composition de revêtement peut également contenir des promoteurs d'adhésion, des stabilisants thermiques, des plastifiants, des activateurs de relâchement, des agents de réticulation et des colorants. Plusieurs procédés de fabrication sont présentés et illustrés à l'aide d'exemples.

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