Non-stick coated electrosurgical instruments and method for manufacturing the same
AssigneeCovidien LP
InventorsJoe D. Sartor, William E. Robinson, Todd W. Boucher
Life of this patent
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Abstract
An end effector assembly for use with an electrosurgical instrument is provided. The electrosurgical instrument includes a handle having a shaft that extends therefrom, an end effector disposed at a distal end of the shaft, at least one electrode operably coupled to the end effector and adapted to couple to a source of electrosurgical energy, a chromium nitride coating covering at least a portion of the electrode, and a hexamethyldisiloxane plasma coating covering at least a portion of the chromium nitride coating.
Claims17
An electrosurgical instrument, comprising:
- a handle having a shaft that extends therefrom;
- an end effector disposed at a distal end of the shaft, the end effector including:
- a support base;
- and
- at least one electrode assembled to the support base and adapted to couple to a source of electrosurgical energy;
- a chromium nitride coating covering at least a portion of the electrode at varying thicknesses and not covering the end effector;
- and
- a hexamethyldisiloxane plasma coating covering an entirety of an outer surface of the end effector including an outer surface of the support base and the at least one electrode including at least a portion of the chromium nitride coating.
An end effector assembly including a pair of opposing jaw members, each of the jaw members comprising:
- a support base;
- an electrical jaw lead;
- a sealing plate coupled to the electrical jaw lead and the support base, the sealing plate having a stainless steel layer;
- a chromium nitride coating disposed over at least a portion of the stainless steel layer at varying thicknesses and not disposed over the support base;
- and
- a hexamethyldisiloxane plasma coating disposed over an entirety of an outer surface of the jaw member including an outer surface of the support base and the sealing plate including the chromium nitride coating.
A method of manufacturing an electrosurgical instrument, comprising:
- applying a chromium nitride coating to at least a portion of an electrically conductive surface to form a coated electrically conductive surface;
- assembling the coated electrically conductive surface to a treatment member by affixing the coated electrically conductive surface to a support base to form an assembled treatment member;
- and
- after assembling the coated electrically conductive surface to the treatment member, applying a hexamethyldisiloxane plasma coating over at least a portion of the assembled treatment member, the coated electrically conductive surface, and the support base such that the chromium nitride coating is only disposed over the electrically conductive surface and not disposed over the treatment member and the hexamethyldisiloxane plasma coating is disposed over the assembled treatment member and the chromium nitride coating.
Dependencies are inferred from the claim text.