1
David C Yates, James W Voegele, Jesse Kuhns, Anil Nalagatla, Warren P Williamson IV, Steven H Mersch, Martin Madden, Richard P Nuchols: Electrosurgical hemostatic device. Ethicon Endo Surgery, Bernard Shay, September 22, 1998: US05810811 (901 worldwide citation)

An improved electro surgical instrument is provided for cauterization and/or welding of tissue of varying impedances, thicknesses and vascularity especially in the performance of endoscopic procedures. The instrument compresses the tissue between one pole of a bipolar energy source located on one in ...


2
Bryan D Knodel, Richard P Nuchols, Warren P Williamson IV: Surgical stapler instrument. Ethicon Endo Surgery, November 14, 1995: US05465895 (876 worldwide citation)

A surgical stapler instrument is provided for applying lateral lines of staples to tissue while cutting the tissue between those staple lines. The instrument includes a handle portion, an implement portion, a reciprocating section, a drive member and a movable actuator. The implement portion include ...


3
David C Yates, Jesse J Kuhns, Warren P Williamson IV: Electrosurgical hemostatic device. Ethicon Endo Surgery, January 20, 1998: US05709680 (831 worldwide citation)

An electrosurgical instrument is provided for cauterization and/or welding of tissue of varying impedances, thicknesses and vascularity especially in the performance of endoscopic procedures. The instrument compresses the tissue in the compression zone between first interfacing surface and second in ...


4
Warren P Williamson IV, David C Yates: Surgical tissue treating device with locking mechanism. Ethicon Endo Surgery, Bernard Shay, February 15, 2000: US06024741 (755 worldwide citation)

A locking mechanism for ensuring proper sequential usage of a surgical instrument is provided for an instrument utilizing a tissue treating energy, particularly a tissue heating energy, such as, for example, electrosurgical, ultrasonic, thermal, laser, infrared light, or other heating energies. One ...


5
Warren P Williamson IV, Thomas W Huitema, James H Chambers: Surgical stapler and staple cartridge. Ethicon Endo Surgery, Dressler Rockey Milnamow & Katz, February 16, 1999: US05871135 (682 worldwide citation)

A surgical stapler comprising at least one cam having a cam surface, an arrangement for actuating the cam for a longitudinal firing movement of the cam surface, a cartridge having a plurality of staple drive members driven by the longitudinal movement of the cam surface, and a plurality of surgical ...


6
Bryan D Knodel, Richard P Nuchols, Warren P Williamson IV: Surgical stapler instrument. Ethicon Endo Surgery, Bernard E Shay, October 8, 1996: US05562241 (663 worldwide citation)

A surgical stapler instrument is provided for applying lateral lines of staples to tissue while cutting the tissue between those staple lines. The instrument includes a handle portion, an implement portion, a reciprocating section, a drive member and a movable actuator. The implement portion include ...


7
Warren P Williamson IV, David C Yates: Surgical tissue treating device with locking mechanism. Ethicon Endo Surgery, September 15, 1998: US05807393 (639 worldwide citation)

A locking mechanism for ensuring proper sequential usage of a surgical instrument is provided for an instrument utilizing a tissue treating energy, particularly a tissue heating energy, such as, for example, electrosurgical, ultrasonic, thermal, laser, infrared light, or other heating energies. One ...


8
Warren P Williamson IV, David C Yates: Impedance feedback monitor with query electrode for electrosurgical instrument. Ethicon Endo Surgery, October 6, 1998: US05817093 (638 worldwide citation)

Query electrodes are provided for monitoring the electrical impedance of tissue as it is treated with electrosurgical energy. In one embodiment, based on a predicted model of tissue impedance and a number of initial impedance readings, the impedance at which tissue treatment is completed is predicte ...


9
Warren P Williamson IV, Leo J Nolan: Surgical stapler with tissue gripping ridge. Ethicon Endo Surgery, Matthew S Goodwin, September 26, 1995: US05452837 (484 worldwide citation)

An improved surgical stapler is disclosed having a tissue gripping ridge on at least one of the tissue contacting surfaces. The tissue contact surfaces are preferably displayed on both the anvil and the cartridge surfaces of the surgical stapler. The tissue gripping ridges preferably have serrated s ...


10
Warren P Williamson IV: Staple cartridge for a surgical stapler. Ethicon Endo Surgery, Dressler Goldsmith Shore & Milnamow, May 23, 1995: US05417361 (469 worldwide citation)

A staple cartridge for a surgical stapler includes a staple drive member which is driven by longitudinal movement of a cam through the surgical stapler for firing at least one surgical staple. The staple drive member comprises a staple drive element having a staple driving surface in association wit ...