Ethicon Endo-Surgery, Inc.

Kenneth V Moran

David C Yates

Chester O Baxter, Iii

James R Giordano

David A Witt

Jesse J Kuhns

Terry McFarland

William A Crawford

Phillip Q Shuster

Chester O Baxter Iii

An electrosurgical stapling instrument includes an end effector capable of applying bipolar RF energy into tissue. The end effector has a first pole electrode and a second pole electrode for forming an RF contact circuit with tissue. At least one of the electrodes may have a dielectric coating thereon to create a RF circuit with tissue. The dielectric coating can cover one of the electrodes to create a capacitive coupling circuit with tissue, or can have at least one open passageway extending through the dielectric coating to enable tissue contact with the electrode and the passage of RF energy therethrough. The dielectric coating on the electrode can be masked to create passageways through the dielectric, or the dielectric coating can be locally removed with a variety of techniques to form passageways. The dielectric coating may provide a barrier to prevent shorting between the dielectrically coated electrode and a conductive fastener embedded within tissue. Alternately, a cartridge coating can be used to reduce an electric surface sheet charge on the cartridge thermoplastic that can occur during the application of RF energy to tissue.

End effector coatings for electrosurgical instruments

A notch-locating fixture for forming notches at predetermined locations along a needle wire used in a surgical suturing apparatus includes a base having at least one semi-circular recess shaped and dimensioned for receiving the needle wire. The fixture also includes a cover member including at least one aligned slot formed therein in a manner providing a grinding wheel with access to needle wire held between the base and the cover member. The fixture further includes a securing structure selectively coupling the base to the cover member.

Producing notch feature in small diameter steel alloy needle wire

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Loveland, OH, United States of America

Kenneth V Moran