Patents by Inventor Grant T. Sims

Grant T. Sims 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: 11628008
    Abstract: A forceps includes shaft members each having a jaw member disposed at a distal end thereof and configured move the jaw members between open and closed position. A knife deployment mechanism includes a trigger moveable along a longitudinal axis to deploy a knife between retracted and extended positions between the jaw members, the knife deployment mechanism including links that cooperate to actuate the knife. A knife kickout mechanism is pivotably coupled to one link and is configured to engage a ramp disposed in a shaft member upon approximation of the shaft members, the knife kickout is configured to cooperate with the links to urge the knife back to an at rest position upon the opening of the shaft members.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: April 18, 2023
    Assignee: Covidien LP
    Inventors: Jennifer L. Rich, Craig V. Krastins, Daniel W. Mercier, Kelley D. Goodman, Grant T. Sims
  • Patent number: 11622804
    Abstract: A forceps includes first and second shafts each having a jaw disposed at a distal end thereof configured to rotate about a pivot to move the jaws between open and closed positions, the shafts defining a longitudinal axis therebetween. A knife deployment mechanism including a rack and pinion mechanism or a series of links is disposed within the first shaft and includes a trigger moveable along the longitudinal axis to deploy a knife between the jaws. A knife lockout is configured to move upon approximation of the first and second shafts between an engaged position preventing deployment of the knife and a disengaged position allowing deployment of the knife. A knife kickout mechanism is disposed within the first shaft in opposition to the second shaft and is configured to force the knife forward upon movement of the first and second shafts from an approximated position to a more open position.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: April 11, 2023
    Assignee: COVIDIEN LP
    Inventors: Jennifer L. Rich, Craig V. Krastins, Kelley D. Goodman, Daniel W. Mercier, Grant T. Sims
  • Publication number: 20230107451
    Abstract: An electrosurgical smoke evacuation pencil includes a handle housing, a suction conduit, an electrode, and a nozzle. The handle housing has a proximal end portion and a distal end portion and defines a lumen therethrough. The suction conduit is coupled to the handle housing and is configured to couple the electrosurgical pencil to a smoke evacuator. The electrode extends from the distal end portion of the handle housing and is configured to couple to a source of electrosurgical energy. The nozzle extends from the distal end portion of the handle housing and defines a lumen in fluid communication with the lumen of the handle housing. The nozzle is configured to transmit light from a light source through the nozzle and out of a distal end of the nozzle to form a light path illuminating therefrom.
    Type: Application
    Filed: August 16, 2022
    Publication date: April 6, 2023
    Inventor: Grant T. Sims
  • Patent number: 11617612
    Abstract: A forceps includes first and second shafts each having a jaw disposed at a distal end thereof configured to rotate about a pivot to move the jaws between open and closed positions, the shafts defining a longitudinal axis therebetween. A knife deployment mechanism including a rack and pinion mechanism or a series of links is disposed within the first shaft and includes a trigger moveable along the longitudinal axis to deploy a knife between the jaws. A knife lockout is configured to move upon approximation of the first and second shafts between an engaged position preventing deployment of the knife and a disengaged position allowing deployment of the knife. A knife kickout mechanism is disposed within the first shaft in opposition to the second shaft and is configured to force the knife forward upon movement of the first and second shafts from an approximated position to a more open position.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: April 4, 2023
    Assignee: Covidien LP
    Inventors: Jennifer L. Rich, Craig V. Krastins, Kelley D. Goodman, Daniel W. Mercier, Grant T. Sims
  • Publication number: 20230094871
    Abstract: A vessel sealing instrument includes a housing having a shaft extending from a distal end thereof including an end effector assembly having opposing first and second jaw members operably coupled thereto. The jaw members movable between open and closed positions for clamping tissue with a closure pressure. The jaw members are adapted to connect to a generator for providing energy thereto. An anti-backdrive mechanism is operably associated with the end effector assembly, the anti-backdrive mechanism including first and second mesh-like electrodes disposed in opposing relation on respective first and second jaw members and including openings defined therein.
    Type: Application
    Filed: September 27, 2022
    Publication date: March 30, 2023
    Inventors: Grant T. Sims, William R. Whitney, Jason G. Weihe, James D. Allen, IV, Jason T. Sanders, Alyssa M. Sawyer, Curtis M. Siebenaller
  • Publication number: 20230088000
    Abstract: A method of assembling a jaw member of an electrosurgical forceps includes aligning in vertical registration an electrically conductive seal plate, an insulative spacer and a jaw support. The method further includes stacking the seal plate atop the insulative spacer and the jaw support such that a flange depending from the seal plate seats within a corresponding cavity defined within a flange depending from the insulative spacer which, in turn, seats within a cavity defined within the jaw support. The method further includes mechanically securing the seal plate, insulative spacer and jaw support to one another and securing a jaw housing to surround the jaw support, the insulative spacer and the seal plate.
    Type: Application
    Filed: November 28, 2022
    Publication date: March 23, 2023
    Inventors: Grant T. Sims, Kelley D. Goodman, Craig V. Krastins, Robert F. McCullough, JR., Daniel W. Mercier, Jennifer L. Rich
  • Patent number: 11607267
    Abstract: An electrosurgical forceps includes first and second shaft members pivotably coupled to one another such that pivoting of the first and second shaft members between spaced-apart and approximated positions pivots jaw members thereof between open and closed positions. A proximal end portion of the second shaft member may be pivoted against a resilient bias of a spring element to apply a predetermined clamping pressure on tissue and ultimately engage an activation switch to delivery electrosurgical energy to the clamped tissue.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: March 21, 2023
    Assignee: Covidien LP
    Inventors: Grant T. Sims, Daniel W. Mercier, Craig V. Krastins, Jennifer L. Rich, Kelley D. Goodman
  • Publication number: 20230081874
    Abstract: A knife limit for a surgical instrument includes a housing having a shaft extending therefrom configured to support an end effector at a distal end thereof, the end effector including first and second jaw members. One or both of the jaw members including a knife channel defined therein and extending therealong to a distal portion thereof. A knife assembly is disposed within the housing and cooperates with a trigger to translate a knife within the knife channel to the distal portion of the jaw member upon actuation thereof. A knife limit button is disposed within the housing and is configured to limit the distal translation of the knife within the knife channel upon selective actuation thereof. The knife limit button is movable between a first position allowing full translation of the knife within the knife channel and a second position limiting distal translation of the knife within the knife channel.
    Type: Application
    Filed: August 18, 2022
    Publication date: March 16, 2023
    Inventors: Jennifer R. Mchenry, Grant T. Sims, Daniel A. Joseph
  • Publication number: 20230076786
    Abstract: An end effector of an electrosurgical forceps includes a first jaw member, a second jaw member, and a cap. The first jaw member has a pivot pin extending inwardly from an inner lateral side thereof. The second jaw member is pivotably coupled to the pivot pin. The cap couples the first and second jaw members to one another.
    Type: Application
    Filed: November 14, 2022
    Publication date: March 9, 2023
    Inventors: Grant T. Sims, JR., Kelley D. Goodman, Craig V. Krastins, Robert F. McCullough, Jr., Jennifer L. Rich, Daniel W. Mercier
  • Publication number: 20230023049
    Abstract: An electrosurgical forceps includes first and second shaft members and first and second jaw members extending distally from the respective first and second shaft members. A pivot couples the first and second shaft members with one another such that the first and second shaft members are movable relative to one another between a spaced-apart position and an approximated position to move the first and second jaw members relative to one another between an open position and a closed position. The jaw members are configured to facilitate tissue treatment, tissue division, and blunt tissue dissection.
    Type: Application
    Filed: October 3, 2022
    Publication date: January 26, 2023
    Inventors: Grant T. Sims, Benjamin R. Arts, Kelley D. Goodman, David Michael Keffeler, Craig V. Krastins, Robert F. McCullough, JR., Daniel W. Mercier, Jennifer L. Rich
  • Publication number: 20220409264
    Abstract: A vessel sealing instrument includes a housing having a shaft extending from a distal end thereof including an end effector assembly having opposing first and second jaw members operably coupled thereto. One of the jaw members moveable between open and closed positions for clamping tissue with a closure pressure within the range of about 3 kg/cm2 to about 16 kg/cm2. The jaw members are adapted to connect to a generator for providing energy thereto in accordance with a sealing algorithm. An anti-backdrive mechanism is associated with the end effector assembly and includes: a drive shaft coupled to a controller and a screw on opposite ends, the screw configured to engage one of the jaw members upon extension thereof to provide additional closure pressure therebetween. The drive shaft is rotatable by the controller to extend the screw in response to tissue expansion during sealing based on the sealing algorithm.
    Type: Application
    Filed: June 24, 2022
    Publication date: December 29, 2022
    Inventors: Grant T. Sims, William R. Whitney, Jason G. Weihe, James D. Allen, IV, Jason T. Sanders, Alyssa M. Sawyer, Curtis M. Siebenaller
  • Publication number: 20220409266
    Abstract: A vessel sealing instrument includes a housing having a shaft extending from a distal end thereof, the distal end including an end effector assembly having a pair of opposing jaw members operably coupled thereto. One or both of the jaw members is moveable between open and closed positions for clamping tissue with a closure pressure. One or both of the jaw members connects to a generator that provides energy thereto in accordance with a sealing algorithm upon activation thereof. An anti-backdrive mechanism is coupled to the end effector assembly and includes a drive shaft coupled at one end to a solenoid and another end that engages one of the jaw members upon extension thereof to provide additional closure pressure between the jaw members. The drive shaft is extendible by the solenoid to extend the drive shaft in response to tissue expansion during sealing based on the sealing algorithm.
    Type: Application
    Filed: June 24, 2022
    Publication date: December 29, 2022
    Inventors: Grant T. Sims, William R. Whitney, Jason G. Weihe, James D. Allen, IV, Jason T. Sanders, Alyssa M. Sawyer, Curtis M. Siebenaller
  • Publication number: 20220409265
    Abstract: A vessel sealing instrument includes a housing having a shaft extending from a distal end thereof having an end effector assembly including a pair of opposing first and second jaw members operably coupled thereto. A drive assembly is disposed within the housing and is configured to move the jaw members upon actuation thereof between an open position and a closed position for clamping tissue with a closure pressure within the range of about 3 kg/cm2 to about 16 kg/cm2. An anti-backdrive assembly is operably disposed within the housing and includes a drive wedge. A solenoid controller is operably coupled to the drive wedge and is configured to selectively move the drive wedge into the drive assembly upon activation thereof to increase the closure pressure between the jaw members in response to tissue expansion during sealing.
    Type: Application
    Filed: June 24, 2022
    Publication date: December 29, 2022
    Inventors: Grant T. Sims, William R. Whitney, Jason G. Weihe, James D. Allen, IV, Jason T. Sanders, Alyssa M. Sawyer, Curtis M. Siebenaller
  • Publication number: 20220401143
    Abstract: A method of sealing tissue includes attempting to grasp tissue between first and second jaw members of an end effector assembly of an electrosurgical instrument, attempting to conduct electrosurgical energy between the first and second jaw members, and determining, based on impedance feedback from the electrosurgical energy, whether an error exists. In a case where no error is detected, the method includes implementing a tissue treating algorithm to treat tissue grasped between the first and second jaw members. The tissue treating algorithm includes conducting electrosurgical energy between the first and second jaw members and through tissue grasped therebetween. In a case where an error is detected, the method includes determining, based on additional feedback data, a cause of the error, and outputting an alarm indicating the error and the cause of the error.
    Type: Application
    Filed: March 23, 2022
    Publication date: December 22, 2022
    Inventor: Grant T. Sims
  • Patent number: 11523861
    Abstract: A method of assembling a jaw member of an electrosurgical forceps includes aligning in vertical registration an electrically conductive seal plate, an insulative spacer and a jaw support. The method further includes stacking the seal plate atop the insulative spacer and the jaw support such that a flange depending from the seal plate seats within a corresponding cavity defined within a flange depending from the insulative spacer which, in turn, seats within a cavity defined within the jaw support. The method further includes mechanically securing the seal plate, insulative spacer and jaw support to one another and securing a jaw housing to surround the jaw support, the insulative spacer and the seal plate.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: December 13, 2022
    Assignee: COVIDIEN LP
    Inventors: Grant T. Sims, Kelley D. Goodman, Craig V. Krastins, Robert F. Mccullough, Jr., Daniel W. Mercier, Jennifer L. Rich
  • Patent number: 11510725
    Abstract: An electrosurgical forceps includes a pair of first and second shaft members pivotably coupled to one another, an end effector assembly coupled to the pair of first and second shaft members, a knife, and a knife deployment mechanism. The knife deployment mechanism has one or more safety features that resist an inadvertent deployment of the knife.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: November 29, 2022
    Assignee: Covidien LP
    Inventors: Grant T. Sims, Kelley D. Goodman, Craig V. Krastins, Robert F. McCullough, Jr., Jennifer L. Rich, Daniel W. Mercier
  • Patent number: 11497545
    Abstract: An end effector of an electrosurgical forceps includes a first jaw member, a second jaw member, and a cap. The first jaw member has a pivot pin extending inwardly from an inner lateral side thereof. The second jaw member is pivotably coupled to the pivot pin. The cap couples the first and second jaw members to one another.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: November 15, 2022
    Assignee: Covidien LP
    Inventors: Grant T. Sims, Kelley D. Goodman, Craig V. Krastins, Robert F. McCullough, Jr., Jennifer L. Rich, Daniel W. Mercier
  • Patent number: 11490953
    Abstract: An electrosurgical instrument includes an elongated first shaft fabricated from thermally-conductive plastic material, an elongated second shaft, and opposing first and second jaw members each having a proximal end portion coupled to a distal end portion of the respective first and second shafts. One or both of the jaw members has a jaw frame and an electrically-conductive tissue sealing structure disposed over the jaw frame. The first shaft has a heat sink disposed therein configured to dissipate heat from the tissue sealing structure toward the thermally-conductive plastic material.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: November 8, 2022
    Assignee: Covidien LP
    Inventor: Grant T. Sims
  • Publication number: 20220331004
    Abstract: An electrosurgical forceps includes first and second shaft members and first and second jaw members extending distally from the respective first and second shaft members. A pivot couples the first and second shaft members with one another such that the first and second shaft members are movable relative to one another between a spaced-apart position and an approximated position to move the first and second jaw members relative to one another between an open position and a closed position. The jaw members are configured to facilitate tissue treatment, tissue division, and blunt tissue dissection.
    Type: Application
    Filed: July 1, 2022
    Publication date: October 20, 2022
    Inventors: Grant T. Sims, Benjamin R. Arts, Kelley D. Goodman, David M. Keffeler, Craig V. Krastins, Robert F. McCullough, Jr., Daniel W. Mercier, Jennifer L. Rich
  • Patent number: 11471211
    Abstract: An electrosurgical forceps includes first and second shaft members and first and second jaw members extending distally from the respective first and second shaft members. A pivot couples the first and second shaft members with one another such that the first and second shaft members are movable relative to one another between a spaced-apart position and an approximated position to move the first and second jaw members relative to one another between an open position and a closed position. The jaw members are configured to facilitate tissue treatment, tissue division, and blunt tissue dissection.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: October 18, 2022
    Assignee: Covidien LP
    Inventors: Grant T. Sims, Benjamin R. Arts, Kelley D. Goodman, David M. Keffeler, Craig V. Krastins, Robert F. Mccullough, Jr., Daniel W. Mercier, Jennifer L. Rich