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：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：US20190274750A1

公开(公告)日：2019-09-12

申请号：US16144486

申请日：2018-09-27

Applicant: Ethicon LLC

Inventor： Madeleine C. Jayme ,  James M. Wilson ,  Craig N. Faller ,  Kristen G. Denzinger

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

Abstract: A radio frequency (RF) instrument may include a method of classifying a tissue in live time. The method may include activating the instrument for a first period of time T1 when the RF instrument contacts the tissue, plotting at least three electrical parameters associated with the tissue to classify the tissue into distinct groups, and applying a classification algorithm to classify the tissue into a distinct group in live time. The parameters may include an initial impedance of the tissue, a minimum impedance of the tissue, and an amount of time that the impedance slope is ˜0. The instrument may collect the parameters during a predetermined amount of time, such as within the first 0.75 seconds of the activation of the device. The classification algorithm may include a support vector machine algorithm that may use a linear, polynomial, or radial basis set.

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：US20190201080A1

公开(公告)日：2019-07-04

申请号：US16182238

申请日：2018-11-06

Applicant: Ethicon LLC

Inventor： Jeffrey D. Messerly ,  Frederick E. Shelton, IV ,  David C. Yates ,  Jason L. Harris ,  James M. Wilson

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

CPC classification number: A61B18/1445 ,  A61B17/320068 ,  A61B17/320092 ,  A61B34/30 ,  A61B50/10 ,  A61B50/13 ,  A61B2017/00017 ,  A61B2017/00022 ,  A61B2017/00504 ,  A61B2017/320073 ,  A61B2017/320094 ,  A61B2017/320095 ,  A61B2018/00636 ,  A61B2018/00642 ,  A61B2018/00702 ,  A61B2018/00875 ,  A61B2018/00994 ,  A61B2050/185 ,  A61B2090/032 ,  G16H40/63 ,  G16H40/67

Abstract: Surgical instruments and system and methods for using surgical instruments are disclosed. A surgical instrument comprises an end effector comprising an ultrasonic blade and clamp arm, an ultrasonic transducer, and a control circuit. The ultrasonic transducer ultrasonically oscillates the ultrasonic blade in response to a drive signal from a generator. The end effector receives electrosurgical energy to weld tissue. The control circuit determines a resonant frequency measure indicative of a thermally induced change in resonant frequency and a electrical continuity measure; calculates a weld focal point based on the determined measures, controls closure of the clamp arm to vary a pressure applied by the clamp arm to provide a threshold control pressure to the tissue loaded into the end effector, and maintains a gap between the ultrasonic blade and clamp arm at a point proximal to the proximal end of the tissue. Pressure is varied based on corresponding weld focal point.

公开(公告)号：US11298148B2

公开(公告)日：2022-04-12

申请号：US16144486

申请日：2018-09-27

Applicant: Ethicon LLC

Inventor： Madeleine C. Jayme ,  James M. Wilson ,  Craig N. Faller ,  Kristen G. Denzinger

IPC: A61B5/00 ,  A61B17/32 ,  A61B18/12 ,  A61B18/14 ,  A61B17/3211 ,  A61B17/00 ,  A61B17/22 ,  A61B18/00 ,  A61B17/28 ,  A61B34/30 ,  A61B34/10 ,  A61B90/00

Abstract: A radio frequency (RF) instrument may include a method of classifying a tissue in live time. The method may include activating the instrument for a first period of time T1 when the RF instrument contacts the tissue, plotting at least three electrical parameters associated with the tissue to classify the tissue into distinct groups, and applying a classification algorithm to classify the tissue into a distinct group in live time. The parameters may include an initial impedance of the tissue, a minimum impedance of the tissue, and an amount of time that the impedance slope is ˜0. The instrument may collect the parameters during a predetermined amount of time, such as within the first 0.75 seconds of the activation of the device. The classification algorithm may include a support vector machine algorithm that may use a linear, polynomial, or radial basis set.

公开(公告)号：US20220015823A1

公开(公告)日：2022-01-20

申请号：US16931495

申请日：2020-07-17

Applicant: Ethicon LLC

Inventor： James M. Wilson ,  Randolph C. Stewart ,  Jason R. Lesko ,  Gregory A. Trees ,  Kristen L. D'Uva

IPC: A61B18/14

Abstract: An apparatus including a body, a shaft assembly extending distally from the body, and an end effector configured to grasp and transmit RF energy to the tissue. The end effector includes a first jaw having a first tissue grasping feature and a second jaw. The second jaw is pivotably coupled to the first jaw between an open position, a partially closed position, and a closed position. The second jaw includes a proximal taper having a proximal electrode surface, a distal taper including a distal electrode surface, and a juncture between the proximal and distal electrode surface. The juncture is spaced further from the first tissue grasping feature compared to the proximal and distal end while the second jaw is in the partially closed position. The proximal and distal electrode surface deform to define a gap with the first tissue grasping feature while in the closed position.