Patents by Inventor Duane E. Kerr

Duane E. Kerr 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: 11523862
    Abstract: A forceps includes an end effector assembly having first and second jaw members movable between a spaced-apart position and an approximated position for grasping tissue therebetween. A knife assembly having a cutting blade disposed at a distal end thereof is also provided. The knife assembly is translatable relative to the end effector assembly between a retracted position and an extended position, wherein the cutting blade extends between the jaw members to cut tissue grasped therebetween. The knife assembly includes a proximal component and a first distal component that includes the cutting blade. The proximal and first distal components are removably coupled to one another to facilitate replacement of the first distal component. Methods of preparing such forceps for reuse are also provided.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: December 13, 2022
    Assignee: COVIDIEN LP
    Inventors: Duane E. Kerr, James D. Allen, IV, Edward M. Chojin, Allan J. Evans, Russell D. Hempstead, Glenn A. Horner, Mark J. Huseman, Daniel A. Joseph, Arlen J. Reschke, Robert M. Sharp
  • Publication number: 20220378490
    Abstract: An electrosurgical device includes jaw members, a thermal cutting element coupled to one of the jaw members. When the jaw members are in an approximated position, power is delivered to the thermal cutting element to maintain the temperature of the thermal cutting element at an operating temperature for cutting sealed tissue grasped between the jaw members. When the jaw members are in the spaced apart position, power is delivered to the thermal cutting element to maintain the temperature of the thermal cutting element at a standby setpoint temperature. In response to a determination of contact between tissue and the thermal cutting element when the jaw members are in the spaced apart position, power is delivered to the thermal cutting element to increase the temperature of the thermal cutting element from the standby setpoint temperature to a cutting setpoint temperature for dissecting tissue.
    Type: Application
    Filed: May 27, 2021
    Publication date: December 1, 2022
    Inventors: James D. Allen, IV, William D. Faulkner, Duane E. Kerr
  • Publication number: 20220378494
    Abstract: An electrosurgical system includes jaw members having a cutting element extending therebetween and a generator configured to: provide minimal power to the cutting element to maintain a pre-dissection temperature thereof; sense a change in resistance of the cutting element and ramp up power to a dissection temperature; regulate the temperature of the cutting element by regulating power; and terminate power to the cutting element to allow the cutting element to cool to the pre-dissection temperature before providing power back to the cutting element.
    Type: Application
    Filed: May 27, 2021
    Publication date: December 1, 2022
    Inventors: James D. Allen, IV, William D. Faulkner, Duane E. Kerr
  • Patent number: 11504201
    Abstract: A surgical device for providing haptic feedback includes a housing having a cavity defined therein configured to receive a finger of a user and an elongated shaft configured to extend through the housing and into the cavity and configured to support a spring thereon and a pressure contact. A fluid-filled sensor is included that has a plurality of tubes configured to extend from the cavity, each tube includes a fluid-filled bladder at both ends thereof joined by a fluid channel therebetween. Each tube is configured to contain a fluid therein such that when a user's finger is engaged between the fluid-filled bladder at the proximal end of the tubes and the pressure contact, changes in pressure in the fluid-filled bladders at a distal end of the tubes is correspondingly registered in the fluid-filled bladders at the proximal end of the tubes providing haptic feedback to the user.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: November 22, 2022
    Assignee: COVIDIEN LP
    Inventors: Daniel A. Joseph, John A. Hammerland, III, Duane E. Kerr
  • Patent number: 11490959
    Abstract: A forceps includes a drive assembly and an end effector assembly having first and second jaw members movable between a spaced-apart position, a first approximated position, and a second approximated position. The drive assembly includes a drive housing and a drive bar. The proximal end of the drive bar is coupled to the drive housing, while the distal end of the drive bar is coupled to at least one of the jaw members. The drive housing and the drive bar are selectively movable in conjunction with one another between a first position and a second position to move the jaw members between the spaced-apart position and the first approximated position. The drive assembly is selectively activatable to move the drive bar independent of the drive housing from the second position to a third position to move the jaw members from the first approximated position to the second approximated position.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: November 8, 2022
    Assignee: COVIDIEN LP
    Inventors: William H. Nau, Jr., Arlen J. Reschke, Robert M. Sharp, Duane E. Kerr, James D. Allen, IV
  • Publication number: 20220257311
    Abstract: A forceps is provided and includes a housing having a shaft. An end effector assembly operatively connects to a distal end of the shaft and includes a pair of first and second jaw members. One or both of the first and second jaw members is movable relative to the other jaw member from a clamping position to an open position. A resilient member operably couples to at least one of the first and second jaw members. The resilient member is configured to bias the first and second jaw members in the clamping position and provide a closure force on tissue disposed therebetween.
    Type: Application
    Filed: May 3, 2022
    Publication date: August 18, 2022
    Inventors: David M. Garrison, James D. Allen, IV, Jeffrey R. Unger, Duane E. Kerr, Sean T. O'Neill, Peter M. Mueller, Kim V. Brandt, James S. Cunningham, Keir Hart, Daniel A. Joseph, Jason Sanders, Robert M. Sharp
  • Publication number: 20220226038
    Abstract: A surgical instrument includes a housing, an end effector and an elongated shaft extending therebetween. The end effector is movable between open and closed configurations. The elongated shaft includes a distal portion that is movable between aligned and articulated configurations. The surgical instrument further includes a driving assembly that induces motion in the end effector between open and closed configuration and maintains a closure pressure in the range of about 3 kg/cm2 to about 16 kg/cm2 between aligned and articulated configurations of the elongated shaft.
    Type: Application
    Filed: February 16, 2022
    Publication date: July 21, 2022
    Inventor: Duane E. Kerr
  • Patent number: 11376058
    Abstract: A plasma instrument includes an elongated body defining a lumen therethrough, the lumen being in fluid communication with an ionizable media source; and a plasma applicator coupled to a distal portion of the elongated body. The plasma applicator includes: an active electrode configured to couple to an active terminal of a generator; and a corona electrode configured to couple to a return terminal of a generator. The plasma instrument also includes a switching element coupled to the corona electrode, the switching element configured to control at least one of resistivity or connectivity of the corona electrode to a generator.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: July 5, 2022
    Assignee: Covidien LP
    Inventors: Arlen K. Ward, Duane E. Kerr
  • Patent number: 11324545
    Abstract: A forceps is provided and includes a housing having a shaft. An end effector assembly operatively connects to a distal end of the shaft and includes a pair of first and second jaw members. One or both of the first and second jaw members is movable relative to the other jaw member from a clamping position to an open position. A resilient member operably couples to at least one of the first and second jaw members. The resilient member is configured to bias the first and second jaw members in the clamping position and provide a closure force on tissue disposed therebetween.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: May 10, 2022
    Assignee: Covidien LP
    Inventors: David M. Garrison, James D. Allen, IV, Jeffrey R. Unger, Duane E. Kerr, Sean T O'Neill, Peter M. Mueller, Kim V. Brandt, James S. Cunningham, Keir Hart, Daniel A. Joseph, Jason T. Sanders, Robert M. Sharp
  • Patent number: 11304717
    Abstract: An end effector assembly configured for use with a surgical instrument or surgical system includes first and second jaw members each including an outer jaw housing, a tissue-treating plate, and a longitudinally-extending channel therethrough. At least one of the first or second jaw members is pivotable relative to the other between a spaced-apart position and an approximated position. A cutting mechanism is configured to cut tissue grasped between the jaw members. The cutting mechanism may include an activation member coupled to a knife and configured to advance the knife transversely between the jaw members, a heat-activated elongated sheet configured to un-roll to advance a cutting edge thereof transversely between the jaw members, or a clutch and spring mechanism configured to deploy a knife longitudinally between the jaw members.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: April 19, 2022
    Assignee: Covidien LP
    Inventors: Thomas E. Drochner, David J. Van Tol, Duane E. Kerr, Gary M. Couture, James D. Allen, IV, Robert M. Sharp
  • Patent number: 11278345
    Abstract: A surgical instrument includes a housing, an end effector and an elongated shaft extending therebetween. The end effector is movable between open and closed configurations. The elongated shaft includes a distal portion that is movable between aligned and articulated configurations. The surgical instrument further includes a driving assembly that induces motion in the end effector between open and closed configuration and maintains a closure pressure in the range of about 3 kg/cm2 to about 16 kg/cm2 between aligned and articulated configurations of the elongated shaft.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: March 22, 2022
    Assignee: Covidien LP
    Inventor: Duane E. Kerr
  • Patent number: 11224476
    Abstract: A bipolar forceps includes a mechanical forceps including first and second shafts each having a jaw member extending from a distal end thereof and a handle disposed at a proximal end thereof for effecting movement of the jaw members relative to one another about a pivot. A disposable housing is configured to releasably couple to at least one of the shafts and an electrode assembly is configured to releasably couple to the disposable housing. The electrode assembly includes electrodes releasably coupleable to the jaw members. At least one of the electrodes includes a knife channel configured to receive a knife blade therethrough to cut tissue grasped between the jaw members. An actuation mechanism is configured to selectively advance the knife blade through the knife channel to cut tissue.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: January 18, 2022
    Assignee: Covidien LP
    Inventors: Weijiang Ding, Peixiong Yi, Xiucheng Shen, Duane E. Kerr, Sarfraz A. Syed
  • Publication number: 20220008121
    Abstract: An end effector assembly for a surgical instrument includes first and second jaw members each including a jaw housing, an electrically-conductive tissue-treatment plate, and a longitudinally-extending channel. The first and/or second jaw member is movable relative to the other between a spaced-apart position and an approximated position. A cutting mechanism is disposed at least partially within the second jaw member. The cutting mechanism may include an inflatable bladder, a fluid line coupled to the inflatable bladder, and a knife coupled to the inflatable bladder. The cutting mechanism may alternatively include a fluid line, a knife, and a sealing member that defines a variable-volume sealed chamber within the longitudinally-extending channel of the second jaw member. The cutting mechanism may alternatively include at least one electromagnet, at least one electrical wire coupled to the at least one electromagnet, and a knife operably coupled to the at least one electromagnet.
    Type: Application
    Filed: September 24, 2021
    Publication date: January 13, 2022
    Inventors: Thomas E. Drochner, James D. Allen, IV, Gary M. Couture, Duane E. Kerr, William H. Nau, JR., Robert M. Sharp, David J. Van Tol
  • Publication number: 20210361347
    Abstract: A forceps includes an end effector assembly having first and second jaw members. One (or both) of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One (or both) of the jaw members includes an opposed jaw surface having an electrically-conductive tissue sealing plate disposed thereon. The electrically-conductive tissue sealing plate includes a first portion configured to conduct energy through tissue grasped between the jaw members to create a main tissue seal and a second portion including a plurality of spaced-apart fingers extending from the first portion. The second portion is configured to conduct energy through tissue grasped between the jaw members to create an auxiliary tissue seal extending from the main tissue seal for reducing stress concentrations adjacent the main tissue seal.
    Type: Application
    Filed: August 3, 2021
    Publication date: November 25, 2021
    Inventors: Barbara R. Tyrrell, Duane E. Kerr
  • Patent number: 11116565
    Abstract: A surgical instrument is provided and includes a housing having a shaft. An end effector assembly operatively connects to the shaft and has a pair of first and second jaw members. A jaw insert is operably associated with the first and second jaw members. The jaw insert includes one or more cam slots defined therein configured to receive a cam pin that upon movement thereof rotates the first and second jaw members from an open position to a clamping position and an opening defined therein configured to securely house a pivot pin that provides a point of pivot for the first and second jaw members. The jaw insert is manufactured from an insulative medium to dielectrically isolate the first and second jaw members.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: September 14, 2021
    Assignee: Covidien LP
    Inventors: Duane E. Kerr, Glenn A. Horner
  • Publication number: 20210267667
    Abstract: A surgical instrument is provided and includes a housing having a shaft. An end effector assembly operatively connects to the shaft and has a pair of first and second jaw members. A jaw insert is operably associated with the first and second jaw members. The jaw insert includes one or more cam slots defined therein configured to receive a cam pin that upon movement thereof rotates the first and second jaw members from an open position to a clamping position and an opening defined therein configured to securely house a pivot pin that provides a point of pivot for the first and second jaw members. The jaw insert is manufactured from an insulative medium to dielectrically isolate the first and second jaw members.
    Type: Application
    Filed: May 17, 2021
    Publication date: September 2, 2021
    Inventors: Duane E. Kerr, Glenn A. Horner
  • Patent number: 11103302
    Abstract: A forceps includes a housing having a shaft. An end effector assembly operatively connects to a distal end of the shaft and includes a pair of first and second jaw members. One or both of the first and second jaw members is movable relative to the other jaw member from a clamping position to an open position. A resilient member operably couples to the first and second jaw members. The resilient member is configured to bias the first and second jaw members in the clamping position and provide a closure force on tissue disposed therebetween.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: August 31, 2021
    Assignee: Covidien LP
    Inventors: David M. Garrison, Jeffrey M. Roy, Duane E. Kerr
  • Patent number: 11076907
    Abstract: A forceps includes an end effector assembly having first and second jaw members. One (or both) of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One (or both) of the jaw members includes an opposed jaw surface having an electrically-conductive tissue sealing plate disposed thereon. The electrically-conductive tissue sealing plate includes a first portion configured to conduct energy through tissue grasped between the jaw members to create a main tissue seal and a second portion including a plurality of spaced-apart fingers extending from the first portion. The second portion is configured to conduct energy through tissue grasped between the jaw members to create an auxiliary tissue seal extending from the main tissue seal for reducing stress concentrations adjacent the main tissue seal.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: August 3, 2021
    Assignee: COVIDIEN LP
    Inventors: Barbara R. Tyrrell, Duane E. Kerr
  • Publication number: 20210212750
    Abstract: A bipolar forceps includes a mechanical forceps including first and second shafts each having a jaw member extending from a distal end thereof and a handle disposed at a proximal end thereof for effecting movement of the jaw members relative to one another about a pivot. A disposable housing is configured to releasably couple to at least one of the shafts and an electrode assembly is associated with the disposable housing. The electrode assembly includes electrodes releasably coupleable to the jaw members. At least one of the electrodes includes a knife channel configured to receive a knife blade therethrough to cut tissue grasped between the jaw members. A switch is configured to initiate delivery of electrosurgical energy from the source of electrosurgical energy to the electrodes. An actuation mechanism is configured to selectively advance the knife blade through the knife channel to cut tissue.
    Type: Application
    Filed: March 29, 2021
    Publication date: July 15, 2021
    Inventors: Weng-Kai K. Lee, Scott N. Lacosta, Kelley D. Goodman, Keir Hart, Duane E. Kerr, Geneva Ladtkow, Kenneth E. Netzel, Jeffrey R. Townsend, Raghavendra L. Bhandari, Peixiong Yi
  • Patent number: D956973
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: July 5, 2022
    Assignee: Covidien AG
    Inventors: Sean T. Dycus, Duane E. Kerr, Darion R. Peterson