公开(公告)号：US20190274706A1

公开(公告)日：2019-09-12

申请号：US16144383

申请日：2018-09-27

Applicant: Ethicon LLC

Inventor： Cameron R. Nott ,  Foster B. Stulen ,  Fergus P. Quigley ,  John E. Brady ,  Gregory A. Trees ,  Amrita S. Sawhney ,  Patrick J. Scoggins ,  Kristen G. Denzinger ,  Craig N. Faller ,  Madeleine C. Jayme ,  Alexander R. Cuti ,  Matthew S. Schneider ,  Chad P. Boudreaux ,  Brian D. Black ,  Maxwell T. Rockman ,  Gregory D. Bishop ,  Eric M. Roberson ,  Stephen M. Leuck ,  James M. Wilson

IPC: A61B17/32 ,  A61B17/3211 ,  A61B18/14 ,  A61B18/12 ,  A61B17/00

Abstract: Various aspects of a generator, ultrasonic device, and method for estimating and controlling a state of an end effector of an ultrasonic device are disclsoed. The ultrasonic device includes an electromechanical ultrasonic system defined by a predetermined resonant frequency, including an ultrasonic transducer coupled to an ultrasonic blade. A control circuit measures a complex impedance of an ultrasonic transducer, wherein the complex impedance is defined as Z g  ( t ) = V g  ( t ) I g  ( t ) . The control circuit receives a complex impedance measurement data point and compares the complex impedance measurement data point to a data point in a reference complex impedance characteristic pattern. The control circuit then classifies the complex impedance measurement data point based on a result of the comparison analysis and assigns a state or condition of the end effector based on the result of the comparison analysis. The control circuit estimates the state of the end effector of the ultrasonic device and controls the state of the end effector of the ultrasonic device based on the estimated state.

公开(公告)号：US20180055531A1

公开(公告)日：2018-03-01

申请号：US15679952

申请日：2017-08-17

Applicant: Ethicon LLC

Inventor： Jeffrey D. Messerly ,  Craig T. Davis ,  Mark E. Tebbe ,  Brian D. Black ,  Stephen M. Leuck ,  Eric M. Roberson ,  John Brady ,  Amrita S. Sawhney ,  Shan Wan ,  Ion V. Nicolaescu ,  James Wilson ,  Amelia Pierce

IPC: A61B17/32 ,  B29C65/48

Abstract: Disclosed is an ultrasonic surgical instrument comprising a transducer base plate, first and second piezoelectric elements positioned on opposite faces of the transducer base plate. The transducer base plate is coupled to a waveguide. The waveguide is electrically coupled to the first and second piezoelectric elements by a conductive adhesive. The first and second piezoelectric elements are electrically coupled to an ultrasonic signal generator through an electrode. A thermal conductor conducts thermal energy away from the first and second piezoelectric elements. Also disclosed is a method of fabricating such an ultrasonic surgical instrument.

公开(公告)号：US11464532B2

公开(公告)日：2022-10-11

申请号：US16144383

申请日：2018-09-27

Applicant: Ethicon LLC

Inventor： Cameron R. Nott ,  Foster B. Stulen ,  Fergus P. Quigley ,  John E. Brady ,  Gregory A. Trees ,  Amrita S. Sawhney ,  Patrick J. Scoggins ,  Kristen G. Denzinger ,  Craig N. Faller ,  Madeleine C. Jayme ,  Alexander R. Cuti ,  Matthew S. Schneider ,  Chad P. Boudreaux ,  Brian D. Black ,  Maxwell T. Rockman ,  Gregory D. Bishop ,  Eric M. Roberson ,  Stephen M. Leuck ,  James M. Wilson

IPC: A61B17/32 ,  A61B18/12 ,  A61B18/14 ,  A61B17/3211 ,  A61B17/00 ,  A61B17/22 ,  A61B18/00 ,  A61B17/28 ,  A61B34/30 ,  A61B34/10 ,  A61B90/00

Abstract: Various aspects of a generator, ultrasonic device, and method for estimating and controlling a state of an end effector of an ultrasonic device are disclosed. The ultrasonic device includes an electromechanical ultrasonic system defined by a predetermined resonant frequency, including an ultrasonic transducer coupled to an ultrasonic blade. A control circuit measures a complex impedance of an ultrasonic transducer, wherein the complex impedance is defined as Z g ⁡ ( t ) = V g ⁡ ( t ) I g ⁡ ( t ) . The control circuit receives a complex impedance measurement data point and compares the complex impedance measurement data point to a data point in a reference complex impedance characteristic pattern. The control circuit then classifies the complex impedance measurement data point based on a result of the comparison analysis and assigns a state or condition of the end effector based on the result of the comparison analysis. The control circuit estimates the state of the end effector of the ultrasonic device and controls the state of the end effector of the ultrasonic device based on the estimated state.

公开(公告)号：US20190274717A1

公开(公告)日：2019-09-12

申请号：US16144335

申请日：2018-09-27

Applicant: Ethicon LLC

Inventor： Cameron R. Nott ,  Fergus P. Quigley ,  Amrita S. Sawhney ,  Stephen M. Leuck ,  Brian D. Black ,  Eric M. Roberson ,  Kristen G. Denzinger ,  Patrick J. Scoggins ,  Craig N. Faller ,  Madeleine C. Jayme ,  Jacob S. Gee

IPC: A61B17/32

Abstract: A generator, ultrasonic device, and method for controlling a temperature of an ultrasonic blade are disclosed. A control circuit coupled to a memory determines an actual resonant frequency of an ultrasonic electromechanical system comprising an ultrasonic transducer coupled to an ultrasonic blade by an ultrasonic waveguide. The actual resonant frequency is correlated to an actual temperature of the ultrasonic blade. The control circuit retrieves from the memory a reference resonant frequency of the ultrasonic electromechanical system. The reference resonant frequency is correlated to a reference temperature of the ultrasonic blade. The control circuit then infers the temperature of the ultrasonic blade based on the difference between the actual resonant frequency and the reference resonant frequency. The control circuit controls the temperature of the ultrasonic blade based on the inferred temperature

公开(公告)号：US20190201036A1

公开(公告)日：2019-07-04

申请号：US16115205

申请日：2018-08-28

Applicant: Ethicon LLC

Inventor： Cameron R. Nott ,  Fergus P. Quigley ,  Amrita Singh Sawhney ,  Stephen M. Leuck ,  Brian D. Black ,  Eric M. Roberson ,  Patrick J. Scoggins ,  Craig N. Faller ,  Madeleine C. Jayme ,  Jacob S. Gee ,  Frederick E. Shelton, IV ,  David C. Yates

IPC: A61B17/32

CPC classification number: A61B17/320092 ,  A61B18/12 ,  A61B34/30 ,  A61B90/37 ,  A61B2017/00017 ,  A61B2017/00022 ,  A61B2017/00026 ,  A61B2017/0003 ,  A61B2017/00075 ,  A61B2017/00084 ,  A61B2017/00106 ,  A61B2017/00115 ,  A61B2017/00199 ,  A61B2017/00221 ,  A61B2017/00398 ,  A61B2017/00464 ,  A61B2017/07285 ,  A61B2018/00994 ,  A61B2090/064 ,  A61B2090/066 ,  A61B2090/0809 ,  A61B2090/0811 ,  A61B2217/005 ,  A61B2217/007

Abstract: A generator, ultrasonic device, and method of determining a temperature of an ultrasonic blade are disclosed. A control circuit coupled to a memory determines an actual resonant frequency of an ultrasonic electromechanical system comprising an ultrasonic transducer coupled to an ultrasonic blade by an ultrasonic waveguide. The actual resonant frequency is correlated to an actual temperature of the ultrasonic blade. The control circuit retrieves from the memory a reference resonant frequency of the ultrasonic electromechanical system. The reference resonant frequency is correlated to a reference temperature of the ultrasonic blade. The control circuit then infers the temperature of the ultrasonic blade based on the difference between the actual resonant frequency and the reference resonant frequency.

公开(公告)号：US11259830B2

公开(公告)日：2022-03-01

申请号：US16144335

申请日：2018-09-27

Applicant: Ethicon LLC

Inventor： Cameron R. Nott ,  Fergus P. Quigley ,  Amrita S. Sawhney ,  Stephen M. Leuck ,  Brian D. Black ,  Eric M. Roberson ,  Kristen G. Denzinger ,  Patrick J. Scoggins ,  Craig N. Faller ,  Madeleine C. Jayme ,  Jacob S. Gee

IPC: A61B17/32 ,  A61B18/14 ,  A61B17/3211 ,  A61B18/12 ,  A61B17/00 ,  A61B17/22 ,  A61B18/00 ,  A61B17/28 ,  A61B34/30 ,  A61B34/10 ,  A61B90/00

Abstract: A generator, ultrasonic device, and method for controlling a temperature of an ultrasonic blade are disclosed. A control circuit coupled to a memory determines an actual resonant frequency of an ultrasonic electromechanical system comprising an ultrasonic transducer coupled to an ultrasonic blade by an ultrasonic waveguide. The actual resonant frequency is correlated to an actual temperature of the ultrasonic blade. The control circuit retrieves from the memory a reference resonant frequency of the ultrasonic electromechanical system. The reference resonant frequency is correlated to a reference temperature of the ultrasonic blade. The control circuit then infers the temperature of the ultrasonic blade based on the difference between the actual resonant frequency and the reference resonant frequency. The control circuit controls the temperature of the ultrasonic blade based on the inferred temperature

公开(公告)号：US10736649B2

公开(公告)日：2020-08-11

申请号：US15679952

申请日：2017-08-17

Applicant: Ethicon LLC

Inventor： Jeffrey D. Messerly ,  Craig T. Davis ,  Mark E. Tebbe ,  Brian D. Black ,  Stephen M. Leuck ,  Eric M. Roberson ,  John E. Brady ,  Amrita S. Sawhney ,  Shan Wan ,  Ion V Nicolaescu ,  James M. Wilson ,  Amelia A. Pierce

IPC: A61B17/32 ,  H01L41/053 ,  H01L41/083 ,  H01L41/09 ,  A61B17/00 ,  B29C65/48 ,  A61N7/02 ,  A61B17/22 ,  A61B17/29 ,  B29L31/00 ,  A61B17/16 ,  A61B18/00

Abstract: Disclosed is an ultrasonic surgical instrument comprising a transducer base plate, first and second piezoelectric elements positioned on opposite faces of the transducer base plate. The transducer base plate is coupled to a waveguide. The waveguide is electrically coupled to the first and second piezoelectric elements by a conductive adhesive. The first and second piezoelectric elements are electrically coupled to an ultrasonic signal generator through an electrode. A thermal conductor conducts thermal energy away from the first and second piezoelectric elements. Also disclosed is a method of fabricating such an ultrasonic surgical instrument.

公开(公告)号：US20190274705A1

公开(公告)日：2019-09-12

申请号：US16144351

申请日：2018-09-27

Applicant: Ethicon LLC

Inventor： Amrita S. Sawhney ,  Stephen M. Leuck ,  Brian D. Black ,  Eric M. Roberson

IPC: A61B17/32 ,  A61B17/3211 ,  A61B18/14 ,  A61B18/12 ,  A61B17/00

Abstract: A method of controlling the temperature of an ultrasonic blade includes applying a power level to an ultrasonic transducer to achieve a desired temperature at an ultrasonic blade coupled to the transducer via an ultrasonic waveguide, inferring a temperature of the blade based on a voltage Vg(t) signal and a current Ig(t) signal applied to the transducer, comparing the inferred temperature of the blade to a predetermined temperature; and adjusting the power level to the transducer based on the comparison. In some aspects, the method includes measuring a phase angle φ between the voltage Vg(t) and the current Ig(t) and inferring the temperature of the blade from the phase angle φ. In some aspects, the method includes measuring an impedance Zg(t) equal to a ratio of the voltage Vg(t) to the current Ig(t) and inferring the temperature of the blade from the impedance Zg(t).

公开(公告)号：US20200375651A1

公开(公告)日：2020-12-03

申请号：US16997136

申请日：2020-08-19

Applicant: Ethicon LLC

Inventor： David A. Witt ,  Frederick E. Shelton, IV ,  David C. Yates ,  Chad P. Boudreaux ,  Eric M. Roberson ,  Kevin L. Houser ,  Geoffrey S. Strobl

IPC: A61B18/14

Abstract: An end effector of an electrosurgical device may include a discharge port in communication with a first fluid path, an aspiration port in communication with a second fluid path, a first and second electrode, and a diverter in mechanical communication with the two electrodes. The diverter may receive, on its surface, a fluid emitted by the discharge port, and maintain a contact of the fluid with the first and second electrodes. The diverter may be further configured to prevent an aspiration, by the aspiration port, of the fluid on its surface. An electrosurgical device may include a source port in communication with a first fluid path, an evacuation port in communication with a second fluid path, a first and second electrode, and a housing. The device may include a shaft extending distally from the housing and the end effector as described above.

公开(公告)号：US20190201043A1

公开(公告)日：2019-07-04

申请号：US16115240

申请日：2018-08-28

Applicant: Ethicon LLC

Inventor： Frederick E. Shelton, IV ,  Jeffrey D. Messerly ,  Jason L. Harris ,  David C. Yates ,  Amrita S. Sawhney ,  Stephen M. Leuck ,  Brian D. Black ,  Eric M. Roberson

IPC: A61B17/32 ,  A61B18/14 ,  A61B34/30 ,  A61B18/12

CPC classification number: A61B17/320092 ,  A61B18/1442 ,  A61B18/1445 ,  A61B34/37 ,  A61B2017/0003 ,  A61B2017/00084 ,  A61B2018/0063 ,  A61B2018/00827 ,  A61B2018/00994 ,  A61B2018/1226 ,  A61B2090/065 ,  A61B2090/066

Abstract: A surgical instrument is disclosed. The surgical instrument comprises an end effector comprising an ultrasonic blade and a clamp arm. The clamp arm is movable relative to the ultrasonic blade to transition the end effector between an open configuration and a closed configuration to clamp tissue between the ultrasonic blade and the clamp arm. The surgical instrument further comprises an ultrasonic transducer configured to generate an ultrasonic energy output and a waveguide configured to transmit the ultrasonic energy output to the ultrasonic blade. The surgical instrument further comprises a control circuit, configured to detect an immersion of the end effector in a liquid and compensate for heat flux lost due to the immersion of the end effector in the liquid.