1
David A Witt, Jerome R Morgan, Foster B Stulen, James R Giordano: Feedback control in an ultrasonic surgical instrument for improved tissue effects. Ethicon Endo Surgery, Verne E Kreger, September 19, 2006: US07108695 (422 worldwide citation)

A temperature monitoring device and/or method which control the tissue temperature at the end-effector of a therapeutic ultrasonic cutting and coagulating instrument as the tissue is being heated with ultrasonic vibrations from the end-effector. One or more temperature sensors are located at the end ...


2
David A Witt, Jerome R Morgan, Foster B Stulen, James R Giordano: Feedback control in an ultrasonic surgical instrument for improved tissue effects. Ethicon Endo Surgery, Verne E Kreger Jr, September 24, 2002: US06454781 (388 worldwide citation)

A temperature or impedance sensing device monitors the tissue temperature or impedance at the end-effector of a therapeutic ultrasonic cutting and coagulating instrument as the tissue is being heated with ultrasonic vibrations from the end-effector. One or more sensors are located at the end-effecto ...


3
Eitan T Wiener, Foster B Stulen, Michael J Stokes, Karen K Isaacs: Ultrasonic surgical instruments. Ethicon Endo Surgery, April 30, 2013: US08430898 (217 worldwide citation)

A surgical instrument. The surgical instrument may comprise a transducer and an end effector. The transducer may be configured to provide vibrations along a longitudinal axis at a predetermined frequency and may comprise a piezoelectric stack positioned along the longitudinal axis. The transducer al ...


4
Andrew T Beckman, Paul Guerra, Jason L Harris, Prasanna Malaviya, Foster B Stulen, Jeffrey S Swayze, Bradley E White: Surgical instruments with electrodes. Ethicon Endo Surgery, December 24, 2013: US08613383 (189 worldwide citation)

A surgical stapling assembly is configured to be used to form a tissue seal having an arcuate portion. The surgical stapling assembly comprises an end-effector extending from the distal end of the shaft. The end-effector comprises a first portion and a second portion. The first portion comprises a f ...


5
Eitan T Wiener, Foster B Stulen, Allan L Friedman: Method for detecting presence of a blade in an ultrasonic system. Ethicon Endo Surgery, Darby & Darby, December 9, 2003: US06662127 (176 worldwide citation)

The type of blade installed in a hand piece of an ultrasonic system is determined and the information used to adjust the fault detection threshold of the generator by using an impedance diagram to determine the type of blade which is connected to the hand piece. A check is performed to determine the ...


6
Ashvani K Madan, Jean M Beaupre, Eitan T Wiener, Foster B Stulen: Apparatus and method for tuning ultrasonic transducers. Ethicon Endo Surgery, Verne E Kreger Jr, August 21, 2001: US06278218 (175 worldwide citation)

A method of manufacturing high power sandwich type ultrasonic transducers and, more particularly, a new method of tuning high power sandwich type ultrasonic transducers without the need for a trimming process. A method in accordance with the present invention includes the steps of assembling a sandw ...


7
Foster B Stulen, Steven K Neuenfeldt, Kevin L Houser: Ultrasonic surgical blade and instrument having a gain step. Ethicon Endo Surgery, January 16, 2007: US07163548 (174 worldwide citation)

An ultrasonic surgical blade, and an instrument, having a gain step. The blade body has, in any half wave length of the ultrasonic-surgical-blade body, a first vibration antinode, a vibration node, a second vibration antinode, and a gain step. The gain step is located between the second vibration an ...


8
Allan L Friedman, Foster B Stulen: Method for detecting a loose blade in a hand piece connected to an ultrasonic surgical system. Ethicon Endo Surgery, Darby & Darby, March 25, 2003: US06537291 (174 worldwide citation)

A method for detecting loose blades in a hand piece connected to an ultrasonic surgical system by performing frequency sweeps of a drive signal through a range which includes the resonance of a hand piece/blade system and the resonance of the hand piece without a blade attached. The frequencies of r ...


9
Zhifan F Huang, Jason L Harris, Prasanna Malaviya, Foster B Stulen, Jeffrey S Swayze, Scott A Woodruff, Gwendolyn P Payne, Donna L Korvick, David K Norvell, Aron O Zingman, Paul Guerra, Mary E Mootoo, Jeffrey L Aldridge, Timothy G Dietz, David A Witt: Surgical instruments with electrodes. Ethicon Endo Surgery, June 4, 2013: US08453906 (171 worldwide citation)

An end-effector assembly configured to be attached to a surgical instrument. The end-effector assembly comprises a first jaw and a second jaw comprising a staple cavity. At least one of the first jaw and the second jaw is movable relative to the other jaw. The end-effector assembly comprises a stapl ...


10
Kenneth S Kramer, Eitan T Wiener, William T Donofrio, Kevin Houser, Foster B Stulen: Method for calculating transducer capacitance to determine transducer temperature. Ethicon Endo Surgery, Verne E Kreger Jr, July 18, 2006: US07077853 (164 worldwide citation)

A method for calculating the capacitance of a transducer (C0) without knowing the exact resonance frequency of a transducer/blade combination is achieved by sweeping across a broad frequency range which contains resonant and non-resonant frequencies where C0 can be measured. A pre-defined frequency ...