Patents by Inventor Craig T. Davis

Craig T. Davis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11058472
    Abstract: A surgical instrument includes an ultrasonic transducer, a distally extending shaft, and an end effector at a distal end of the shaft. The end effector includes an ultrasonic blade and a clamp arm. The ultrasonic blade includes an upper treatment side, a lower treatment side, a first lateral side, and a second lateral side. The clamp arm is movable relative to the ultrasonic blade for clamping tissue therebetween, and it provides an RF electrode operable to seal tissue with RF energy. The RF electrode includes first and second electrode side portions. The first electrode side portion is spaced laterally outward from the first lateral side of the ultrasonic blade by a first lateral gap distance. The second electrode side portion spaced from the first electrode side portion and is spaced laterally outward from the second lateral side of the ultrasonic blade by a second lateral gap distance.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: July 13, 2021
    Assignee: Cilag GmbH International
    Inventors: Jason R. Lesko, Catherine A. Corbett, Craig T. Davis, Frederick L. Estera
  • Patent number: 11051866
    Abstract: A surgical instrument includes an ultrasonic transducer, a shaft extending distally along a shaft axis, a waveguide acoustically coupled with the ultrasonic transducer and extending distally through the shaft, and an end effector at a distal end of the shaft. The end effector includes an ultrasonic blade acoustically coupled with the waveguide. A nodal support element is arranged within a distal portion of the shaft and encircles the waveguide at a distal-most acoustic node of the waveguide. The nodal support element includes a support portion aligned with the distal-most acoustic node, and a sealing portion extending axially from the support portion. The support portion engages an inner surface of the shaft and is configured to support the waveguide in coaxial alignment with the shaft axis. The sealing portion sealingly engages the inner surface of the shaft and is configured to prevent proximal ingress of fluid through the shaft.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: July 6, 2021
    Assignee: Cilag GmbH International
    Inventors: Frederick L. Estera, Michael A. Keenan, Craig T. Davis, William B. Weisenburgh, II, Jason R. Lesko
  • Publication number: 20210186596
    Abstract: A surgical instrument includes a rotatable electrical coupling assembly having a first part and a second part that electrically couple and rotate relative to each other. The second part is carried by and rotates with a tube collar coupled to a transducer. A portion of the transducer is inserted through an aperture of the second part, but does not contact the second part. The first part of the assembly may electrically couple to the second part via pogo pins, brush contacts, or ball bearings. Alternatively, the first part may comprise conductive channels formed in the casing. The second part may comprise a rotatable drum with a conductive trace. In some versions, one or more components may comprise MID components. In another version, the rotatable electrical coupling assembly comprises a rotatable PC board and brush contact. Further still, a circuit board may be provided with the transducer inside a transducer casing.
    Type: Application
    Filed: February 4, 2021
    Publication date: June 24, 2021
    Inventors: Daniel J. Mumaw, Shawn D. Bialczak, Sora Rhee, Craig T. Davis, John A. Weed, III, Kip M. Rupp, Foster B. Stulen, Timothy G. Dietz, Kevin L. Houser
  • Patent number: 10959769
    Abstract: A surgical instrument includes a rotatable electrical coupling assembly having a first part and a second part that electrically couple and rotate relative to each other. The second part is carried by and rotates with a tube collar coupled to a transducer. A portion of the transducer is inserted through an aperture of the second part, but does not contact the second part. The first part of the assembly may electrically couple to the second part via pogo pins, brush contacts, or ball bearings. Alternatively, the first part may comprise conductive channels formed in the casing. The second part may comprise a rotatable drum with a conductive trace. In some versions, one or more components may comprise MID components. In another version, the rotatable electrical coupling assembly comprises a rotatable PC board and brush contact. Further still, a circuit board may be provided with the transducer inside a transducer casing.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: March 30, 2021
    Assignee: Ethicon LLC
    Inventors: Daniel J. Mumaw, Shawn D. Bialczak, Sora Rhee, Craig T. Davis, John A. Weed, III, Kip M. Rupp, Foster B. Stulen, Timothy G. Dietz, Kevin L. Houser
  • Patent number: 10952759
    Abstract: Various ultrasonic instruments are disclosed. The ultrasonic instruments include structures configured to indicate the cutting length of the instruments, detect when grasped tissue has extended beyond the cutting length of the instrument, and prevent tissue from extending beyond the cutting length. Several techniques for each types of structures are disclosed.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: March 23, 2021
    Assignee: Ethicon LLC
    Inventors: Jeffrey D. Messerly, William E. Clem, John A. Weed, III, Eric Stout, Craig T. Davis, John E. Brady, Joseph D. Dennis, Phillip H. Clauda, Monica L. Z. Rivard
  • Patent number: 10945778
    Abstract: A surgical instrument includes a body, a shaft assembly rotatable relative to the body, and an end effector at a distal end of the shaft assembly and having an RF electrode operable to seal tissue with RF energy. An electrical contact assembly is arranged proximally of the end effector and is configured to electrically couple the RF electrode with an RF energy source. The electrical contact assembly includes a first electrical contact secured to the body and a second electrical contact secured to the shaft assembly. The first contact is configured to electrically couple with the RF energy source. The second contact is electrically coupled with the RF electrode and the first contact, and is configured to rotate with the shaft assembly relative to the first contact. The first and second electrical contacts are configured to remain electrically coupled throughout rotation of the shaft assembly relative to the body.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: March 16, 2021
    Assignee: Ethicon LLC
    Inventors: William B. Weisenburgh, II, Catherine A. Corbett, Jason R. Lesko, Craig T. Davis
  • Patent number: 10945779
    Abstract: A surgical instrument includes a shaft, an ultrasonic transducer, a waveguide, and an end effector at a distal end of the shaft. The end effector includes an ultrasonic blade acoustically coupled with the waveguide, a clamp arm movable relative to the ultrasonic blade, a first RF electrode provided by the clamp arm, and a second RF electrode provided by the ultrasonic blade. The first RF electrode is electrically coupled with a first RF electrical path of the instrument, and the second RF electrode is electrically coupled with a second RF electrical path of the instrument. The RF electrodes are operable to seal tissue with bipolar RF energy. An electrically insulative layer is provided on at least a portion of at least one of the ultrasonic blade, the waveguide, the shaft, or the clamp arm, and is configured to prevent shorting between the first and second RF electrical paths.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: March 16, 2021
    Assignee: Ethicon LLC
    Inventors: William B. Weisenburgh, II, Jason R. Lesko, Catherine A. Corbett, Stephen M. Leuck, Craig T. Davis
  • Patent number: 10828056
    Abstract: Various ultrasonic instruments are disclosed. The ultrasonic instruments include an ultrasonic waveguide acoustically coupled to an ultrasonic transducer. Several techniques for acoustically coupling the ultrasonic transducer to the ultrasonic waveguide are disclosed.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: November 10, 2020
    Assignee: Ethicon LLC
    Inventors: Jeffrey D. Messerly, Benjamin D. Dickerson, Rafael J. Ruiz Ortiz, Ryan M. Asher, Joseph D. Dennis, Brian D. Black, Craig T. Davis, Mark E. Tebbe, Ion V. Nicolaescu, Frederick Estera, William A. Olson, Amelia Pierce, James Wilson, William D. Dannaher, Fajian Zhang, Foster B. Stulen
  • Patent number: 10813662
    Abstract: An ultrasonic surgical instrument includes a body, a shaft, an ultrasonic transducer, a waveguide, and an end effector coupled to a distal end of the shaft. A rotation knob is rotatably coupled to the body and is configured to rotate the shaft, the waveguide, and the end effector together relative to the body. A torque transfer structure is positioned radially outwardly of and in direct contact with the waveguide at an acoustic node thereof. The torque transfer structure is rotationally fixed relative to the waveguide and is configured to rotationally couple the waveguide with the shaft and the rotation knob. The waveguide includes a first axial constraining feature defining a distally facing surface, and the torque transfer structure includes a second axial constraining feature defining a proximally facing surface configured to abut the distally facing surface to constrain the waveguide axially relative to the torque transfer structure and the body.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: October 27, 2020
    Assignee: Ethicon LLC
    Inventors: Rafael J. Ruiz Ortiz, Craig T. Davis, Stephen M. Leuck, Benjamin M. Boyd, Joseph Dennis, Joseph E. Hollo, Nathan Cummings, Ion V. Nicolaescu, Tony C. Siebel, Joseph Isosaki, Frederick L. Estera, John E. Brady, Bryce L. Heitman, Cory G. Kimball
  • Publication number: 20200268408
    Abstract: Systems, devices, and methods are operable to track usage of a surgical instrument and modify the performance of the surgical instrument based on the prior usage of the surgical instrument. Some surgical instruments are designed to have a limited service life beginning at their first use, or a limit to their overall usage in order to ensure safe use of the sensitive instruments. However, a lack of ability to track usage characteristics when the instrument is separated from an external power supply allows for user abuse and avoidance of such safety mechanisms. Adding a battery or capacitor to the instrument may allow for an ability to track usage when the instrument is separated from an external power supply. Implementing special user prompts, device use ratios, and device use half-life upon powering down of an instrument may additionally be used to prevent circumvention of safety features.
    Type: Application
    Filed: February 26, 2020
    Publication date: August 27, 2020
    Inventors: Craig N. Faller, Benjamin D. Dickerson, Jeffrey L. Aldridge, Jeffrey A. Bullock, Richard W. Timm, Ryan M. Asher, Timothy S. Holland, Craig T. Davis, Christina M. Hough, Cory G. Kimball, Ashvani K. Madan, David C. Yates, Shan Wan, Jacob S. Gee, Joseph E. Hollo, Chad P. Boudreaux, John B. Schulte, Tylor C. Muhlenkamp, Brian D. Black
  • Patent number: 10736649
    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.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: August 11, 2020
    Assignee: Ethicon LLC
    Inventors: 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
  • Publication number: 20200170665
    Abstract: An ultrasonic instrument includes a housing, an ultrasonic transducer support by the housing, and an integrated usage indicator. The housing is configured to removably connect to a shaft assembly. The ultrasonic transducer is configured to be acoustically connected to a waveguide and operated a predetermined number of use cycles. The integrated usage indicator is operatively connected to the housing and includes a used state indicator. The used state indicator is configured to indicate to a clinician in a used state when the ultrasonic transducer has been operated at least the predetermined number of use cycles for limiting usage of the ultrasonic transducer to the predetermined number of use cycles.
    Type: Application
    Filed: November 26, 2019
    Publication date: June 4, 2020
    Inventors: Ryan M. Asher, Brian D. Black, Chad P. Boudreaux, Nathan Cummings, William D. Dannaher, Craig T. Davis, Glenn W. Ellison, Frederick L. Estera, Jacob S. Gee, Geni Giannotti, Timothy S. Holland, Kevin L. Houser, Gregory W. Johnson, Amy M. Krumm, Jason R. Lesko, Stephen M. Leuck, Ion V. Nicolaescu, Candice Otrembiak, Amelia A. Pierce, Eric Roberson, Shan Wan
  • Patent number: 10624667
    Abstract: Systems, devices, and methods are operable to track usage of a surgical instrument and modify the performance of the surgical instrument based on the prior usage of the surgical instrument. Some surgical instruments are designed to have a limited service life beginning at their first use, or a limit to their overall usage in order to ensure safe use of the sensitive instruments. However, a lack of ability to track usage characteristics when the instrument is separated from an external power supply allows for user abuse and avoidance of such safety mechanisms. Adding a battery or capacitor to the instrument may allow for an ability to track usage when the instrument is separated from an external power supply. Implementing special user prompts, device use ratios, and device use half-life upon powering down of an instrument may additionally be used to prevent circumvention of safety features.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: April 21, 2020
    Assignee: Ethicon LLC
    Inventors: Craig N. Faller, Benjamin D. Dickerson, Jeffrey L. Aldridge, Jeffrey A. Bullock, Richard W. Timm, Ryan M. Asher, Timothy S. Holland, Craig T. Davis, Christina M. Hough, Cory G. Kimball, Ashvani K. Madan, David C. Yates, Shan Wan, Jacob S. Gee, Joseph E. Hollo, Chad P. Boudreaux, John B. Schulte, Tylor C. Muhlenkamp, Brian D. Black
  • Publication number: 20200085465
    Abstract: Ultrasonic surgical instruments including a handle housing, a switch frame, and a switch assembly are disclosed. The switch assembly may include a first switch arrangement movably supported on a distal portion of the handle housing and selectively movable relative to a first switch contact supported by the switch frame. The switch assembly may further include a second switch arrangement including a right switch button movably supported on a right side of the handle housing and selectively movable relative to a right switch contact supported by the switch frame, and a left switch button movably supported on a left side of the handle housing and selectively movable relative to a left switch contact supported by the switch frame. The first and second switch arrangements may be configured to be selectively actuatable by a single hand supporting the handle housing.
    Type: Application
    Filed: November 25, 2019
    Publication date: March 19, 2020
    Inventors: Richard W. Timm, Daniel W. Price, Jeffery T. Kirk, Jose Domingo Vasquez, Timothy G. Dietz, Richard D. Smith, Ryan M. Asher, Jeffrey L. Aldridge, Craig T. Davis, Emron J. Henry, James W. Voegele, Gregory W. Johnson
  • Patent number: 10561436
    Abstract: An ultrasonic instrument includes a housing, an ultrasonic transducer support by the housing, and an integrated usage indicator. The housing is configured to removably connect to a shaft assembly. The ultrasonic transducer is configured to be acoustically connected to a waveguide and operated a predetermined number of use cycles. The integrated usage indicator is operatively connected to the housing and includes a used state indicator. The used state indicator is configured to indicate to a clinician in a used state when the ultrasonic transducer has been operated at least the predetermined number of use cycles for limiting usage of the ultrasonic transducer to the predetermined number of use cycles.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: February 18, 2020
    Assignee: Ethicon LLC
    Inventors: Ryan M. Asher, Brian D. Black, Chad P. Boudreaux, Nathan Cummings, William D. Dannaher, Craig T. Davis, Glenn W. Ellison, Frederick L. Estera, Jacob S. Gee, Geni Giannotti, Timothy S. Holland, Kevin L. Houser, Gregory W. Johnson, Amy M. Krumm, Jason R. Lesko, Stephen M. Leuck, Ion V. Nicolaescu, Candice Otrembiak, Amelia A. Pierce, Eric Roberson, Shan Wan
  • Patent number: 10517627
    Abstract: Ultrasonic surgical instruments including a handle housing, a switch frame, and a switch assembly are disclosed. The switch assembly may include a first switch arrangement movably supported on a distal portion of the handle housing and selectively movable relative to a first switch contact supported by the switch frame. The switch assembly may further include a second switch arrangement including a right switch button movably supported on a right side of the handle housing and selectively movable relative to a right switch contact supported by the switch frame, and a left switch button movably supported on a left side of the handle housing and selectively movable relative to a left switch contact supported by the switch frame. The first and second switch arrangements may be configured to be selectively actuatable by a single hand supporting the handle housing.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: December 31, 2019
    Assignee: Ethicon LLC
    Inventors: Richard W. Timm, Emron J. Henry, James W. Voegele, Gregory W. Johnson, Daniel W. Price, Jeffery T. Kirk, Jose Domingo Vasquez, Timothy G. Dietz, Richard C. Smith, Ryan M. Asher, Jeffrey L. Aldridge, Craig T. Davis
  • Publication number: 20190133635
    Abstract: A surgical apparatus comprises a body, an ultrasonic transducer, a shaft, an acoustic waveguide, an articulation section, an end effector, and an articulation drive assembly. The ultrasonic transducer is operable to convert electrical power into ultrasonic vibrations. The shaft couples the end effector and the body together. The acoustic waveguide is coupled with the transducer. The articulation section includes a collar that is located distal to a nodal portion of the waveguide and is operable to deflect the end effector away from the longitudinal axis. The end effector comprises an ultrasonic blade in acoustic communication with the ultrasonic transducer. The articulation drive assembly is operable to drive articulation of the articulation section. The articulation drive assembly comprises at least one translating articulation driver coupled with the collar. The ultrasonic blade is operable to deliver ultrasonic vibrations to tissue even when the articulation section is in an articulated state.
    Type: Application
    Filed: November 16, 2018
    Publication date: May 9, 2019
    Inventors: Foster B. Stulen, David A. Monroe, William B. Weisenburgh, II, Richard C. Smith, Ashvani K. Madan, Craig T. Davis, Barry C. Worrell, Benjamin D. Dickerson, Chad P. Boudreaux, Geoffrey S. Strobl, Thomas C. Gallmeyer, Amy L. Benchek, Tylor C. Muhlenkamp, Sean P. Conlon, John A. Hibner
  • Publication number: 20190099212
    Abstract: An end effector of an electrosurgical device may include a discharge port, an aspiration port, two electrodes, and a diverter formed from a porous material. The diverter includes a matrix having voids to receive fluid from the discharge port. A releasable diverter assembly may include an assembly body configured to receive a pair of electrodes and a diverter composed of a porous material. A shaft assembly of an electrosurgical device may include two electrodes and two fluid cannulae. Each cannula may be disposed proximate to a surface of each of the electrodes. An end effector of an electrosurgical device may include a fluid discharge port, two electrodes, and a diverter disposed therebetween. A proximal edge of the diverter may form a secant line with respect to the end of the discharge port so that fluid emitted by the discharge port is disposed on a surface of the diverter.
    Type: Application
    Filed: September 29, 2017
    Publication date: April 4, 2019
    Inventors: Mark A. Davison, Craig T. Davis, Jeffrey W. Bullock, Mark E. Tebbe, Shan Wan, Jeffrey L. Aldridge, Ryan M. Asher, Kristen G. Denzinger, Monica L. Rivard, Kevin A. Bash, Eric M. Roberson
  • Publication number: 20190059988
    Abstract: An apparatus includes a shaft assembly and an end effector. The shaft assembly includes an outer sheath, at least one irrigation conduit, and at least one suction conduit. The end effector includes a first electrode, a second electrode, and a web. The electrodes extend distally relative to a distal end of the outer sheath. The electrodes are operable to apply bipolar RF energy to tissue. The web extends laterally between the first and second electrodes. The web is positioned distal to the distal end of the outer sheath.
    Type: Application
    Filed: August 31, 2017
    Publication date: February 28, 2019
    Inventors: Mark A. Davison, Mark E. Tebbe, Kristen G. Denzinger, Ryan M. Asher, Craig T. Davis, Kevin Bash, Eric Roberson, John E. Brady, Jeffrey A. Bullock, Jeffrey L. Aldridge, Monica L. Zeckel, Shan Wan, Kristen L. D'Uva
  • Publication number: 20190029707
    Abstract: An ultrasonic instrument includes a housing, an ultrasonic transducer support by the housing, and an integrated usage indicator. The housing is configured to removably connect to a shaft assembly. The ultrasonic transducer is configured to be acoustically connected to a waveguide and operated a predetermined number of use cycles. The integrated usage indicator is operatively connected to the housing and includes a used state indicator. The used state indicator is configured to indicate to a clinician in a used state when the ultrasonic transducer has been operated at least the predetermined number of use cycles for limiting usage of the ultrasonic transducer to the predetermined number of use cycles.
    Type: Application
    Filed: July 31, 2017
    Publication date: January 31, 2019
    Inventors: Ryan M. Asher, Brian D. Black, Chad P. Boudreaux, Nathan Cummings, William D. Dannaher, Craig T. Davis, Glenn W. Ellison, Frederick L. Estera, Jacob S. Gee, Geni Giannotti, Timothy S. Holland, Kevin L. Houser, Gregory W. Johnson, Amy M. Krumm, Jason R. Lesko, Stephen M. Leuck, Ion V. Nicolaescu, Candice Otrembiak, Amelia A. Pierce, Eric Roberson, Foster B. Stulen, Shan Wan