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An electrosurgical knife includes a stainless steel blade whose surface is abraided or etched, a first coat of primer material applied over the blade, where the surface of the primer material is also abraided or etched, and a second coat of non-stick fluorinated hydrocarbon material applied over the

An electrosurgical knife includes a stainless steel blade whose surface is abraided or etched, a first coat of primer material applied over the blade, where the surface of the primer material is also abraided or etched, and a second coat of non-stick fluorinated hydrocarbon material applied over the coat of primer material to cover the primer material, for a total thickness of about three mils. The stainless steel blade is completely covered by the coatings but the thickness of the coatings is not so great as to prevent conduction of radio-frequency electrical energy from the blade through the coatings to tissue being cut.

대표청구항 ▼

An electrosurgical instrument for use with a source of radio-frequency electrical energy during surgery to cauterize tissue, said instrument comprising: a. a stainless steel portion of said instrument for receiving said radio-frequency energy and having at least one flesh contacting surface formed t

An electrosurgical instrument for use with a source of radio-frequency electrical energy during surgery to cauterize tissue, said instrument comprising: a. a stainless steel portion of said instrument for receiving said radio-frequency energy and having at least one flesh contacting surface formed thereon, b. a first coat of primer material covering at least all of said flesh contacting surface, and c. a second coat of fluorinated hydrocarbon material entirely covering the primer material to cause a total thickness of the first and second coats of about 3 mils thereby enabling said radio-frequency energy to be transported across said coatings to said flesh by capacitive coupling.