Patents by Inventor Matthew J. Chowaniec

Matthew J. Chowaniec 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: 12383260
    Abstract: A surgical stapler includes a tool assembly that has a cartridge assembly, an anvil assembly, and a dissector tip. The dissector tip is moveable between a first configuration aligned with a longitudinal axis of the tool assembly and a second configuration defining an acute angle with the longitudinal axis of the tool assembly.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: August 12, 2025
    Assignee: Covidien LP
    Inventors: Pawel Abramek, Kenneth M. Cappola, Matthew J. Chowaniec, Zalika Walcott
  • Patent number: 12349910
    Abstract: An end effector for use with a surgical stapler includes a staple cartridge assembly movable relative to an anvil assembly. The staple cartridge assembly defines a plurality of retention slots and a cavity. The staple cartridge assembly includes a plurality of staples, a plurality of pushers, an actuation sled, a surgical buttress material, a suture, and an anchoring button. The actuation sled is configured for movement along a length of the staple cartridge assembly to sequentially engage the plurality of pushers to eject the plurality of staples through the respective plurality of retention slots. The anchoring button is configured to be received in the cavity of the staple cartridge assembly such that a portion of the suture is supported in the cavity to be severed by a knife blade of the actuation sled when the actuation sled is advanced distally.
    Type: Grant
    Filed: February 28, 2024
    Date of Patent: July 8, 2025
    Assignee: Covidien LP
    Inventors: Roanit Fernandes, Suresh Kumar Prema Mohanasundaram, Jitendra Bhargava Srinivas, Matthew J. Chowaniec
  • Publication number: 20240374256
    Abstract: A surgical stapling device includes a drive assembly and a tool assembly having an anvil and a cartridge assembly that is pivotably coupled to the anvil for movement between an open position and a clamped position. The cartridge assembly includes a staple cartridge and a channel member that defines a cavity that receives the staple cartridge. The channel member includes a channel lock that is positioned on a proximal portion of the channel member. The drive assembly is movable between a drive advanced position and a drive retracted position and engages the channel lock in the drive retracted position to retain the tool assembly in the open position.
    Type: Application
    Filed: May 2, 2024
    Publication date: November 14, 2024
    Inventors: Roanit A. Fernandes, Matthew J. Chowaniec
  • Publication number: 20240252173
    Abstract: An anvil buttress loading system includes an anvil assembly, an anvil buttress loading tool, and an anvil buttress. The anvil buttress is retainable on each of the anvil buttress loading tool and the anvil buttress, and is transferrable from the anvil buttress loading tool to the anvil assembly.
    Type: Application
    Filed: April 8, 2024
    Publication date: August 1, 2024
    Inventors: Pawel Abramek, Kenneth M. Cappola, Matthew J. Chowaniec, Roanit Fernandes
  • Publication number: 20240197319
    Abstract: An end effector for use with a surgical stapler includes a staple cartridge assembly movable relative to an anvil assembly. The staple cartridge assembly defines a plurality of retention slots and a cavity. The staple cartridge assembly includes a plurality of staples, a plurality of pushers, an actuation sled, a surgical buttress material, a suture, and an anchoring button. The actuation sled is configured for movement along a length of the staple cartridge assembly to sequentially engage the plurality of pushers to eject the plurality of staples through the respective plurality of retention slots. The anchoring button is configured to be received in the cavity of the staple cartridge assembly such that a portion of the suture is supported in the cavity to be severed by a knife blade of the actuation sled when the actuation sled is advanced distally.
    Type: Application
    Filed: February 28, 2024
    Publication date: June 20, 2024
    Inventors: Roanit Fernandes, Suresh Kumar Prema Mohanasundaram, Jitendra Bhargava Srinivas, Matthew J. Chowaniec
  • Patent number: 11974750
    Abstract: A staple cartridge is adapted to enhance cell migration towards a wound site when staples are placed in tissue. In order to enhance cell migration, the staples in the staple cartridge are adapted to create an electrical potential within the tissue in the area of a wound or cut line. More specifically, the staples are arranged in spaced rings, wherein the staples in the spaced rings are formed of dissimilar metals having different anodic indexes to create a voltage gradient in the tissue to enhance cell migration toward the cut line.
    Type: Grant
    Filed: March 10, 2022
    Date of Patent: May 7, 2024
    Assignee: COVIDIEN LP
    Inventors: Olesea Diaz-Chiosa, Robert H. Knapp, Matthew S. Eschbach, Matthew J. Chowaniec, Johana M. Marinelli
  • Patent number: 11957348
    Abstract: An anvil buttress loading system includes an anvil assembly, an anvil buttress loading tool, and an anvil buttress. The anvil buttress is retainable on each of the anvil buttress loading tool and the anvil buttress, and is transferrable from the anvil buttress loading tool to the anvil assembly.
    Type: Grant
    Filed: July 28, 2022
    Date of Patent: April 16, 2024
    Assignee: COVIDIEN LP
    Inventors: Pawel Abramek, Kenneth M. Cappola, Matthew J. Chowaniec, Roanit Fernandes
  • Patent number: 11918218
    Abstract: An end effector for use with a surgical stapler includes a staple cartridge assembly movable relative to an anvil assembly. The staple cartridge assembly defines a plurality of retention slots and a cavity. The staple cartridge assembly includes a plurality of staples, a plurality of pushers, an actuation sled, a surgical buttress material, a suture, and an anchoring button. The actuation sled is configured for movement along a length of the staple cartridge assembly to sequentially engage the plurality of pushers to eject the plurality of staples through the respective plurality of retention slots. The anchoring button is configured to be received in the cavity of the staple cartridge assembly such that a portion of the suture is supported in the cavity to be severed by a knife blade of the actuation sled when the actuation sled is advanced distally.
    Type: Grant
    Filed: February 24, 2022
    Date of Patent: March 5, 2024
    Assignee: COVIDIEN LP
    Inventors: Roanit Fernandes, Suresh Kumar Prema Mohanasundaram, Jitendra Bhargava Srinivas, Matthew J. Chowaniec
  • Publication number: 20220361875
    Abstract: An anvil buttress loading system includes an anvil assembly, an anvil buttress loading tool, and an anvil buttress. The anvil buttress is retainable on each of the anvil buttress loading tool and the anvil buttress, and is transferrable from the anvil buttress loading tool to the anvil assembly.
    Type: Application
    Filed: July 28, 2022
    Publication date: November 17, 2022
    Inventors: Pawel Abramek, Kenneth M. Cappola, Matthew J. Chowaniec, Roanit Fernandes
  • Publication number: 20220304692
    Abstract: A staple cartridge is adapted to enhance cell migration towards a wound site when staples are placed in tissue. In order to enhance cell migration, the staples in the staple cartridge are adapted to create an electrical potential within the tissue in the area of a wound or cut line. More specifically, the staples are arranged in spaced rings, wherein the staples in the spaced rings are formed of dissimilar metals having different anodic indexes to create a voltage gradient in the tissue to enhance cell migration toward the cut line.
    Type: Application
    Filed: March 10, 2022
    Publication date: September 29, 2022
    Inventors: Olesea Diaz-Chiosa, Robert H. Knapp, Matthew S. Eschbach, Matthew J. Chowaniec, Johana M. Marinelli
  • Patent number: 11399833
    Abstract: An anvil buttress loading system includes an anvil assembly, an anvil buttress loading tool, and an anvil buttress. The anvil buttress is retainable on each of the anvil buttress loading tool and the anvil buttress, and is transferrable from the anvil buttress loading tool to the anvil assembly.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: August 2, 2022
    Assignee: Covidien LP
    Inventors: Pawel Abramek, Kenneth M. Cappola, Matthew J. Chowaniec, Roanit Fernandes
  • Publication number: 20220175379
    Abstract: An end effector for use with a surgical stapler includes a staple cartridge assembly movable relative to an anvil assembly. The staple cartridge assembly defines a plurality of retention slots and a cavity. The staple cartridge assembly includes a plurality of staples, a plurality of pushers, an actuation sled, a surgical buttress material, a suture, and an anchoring button. The actuation sled is configured for movement along a length of the staple cartridge assembly to sequentially engage the plurality of pushers to eject the plurality of staples through the respective plurality of retention slots. The anchoring button is configured to be received in the cavity of the staple cartridge assembly such that a portion of the suture is supported in the cavity to be severed by a knife blade of the actuation sled when the actuation sled is advanced distally.
    Type: Application
    Filed: February 24, 2022
    Publication date: June 9, 2022
    Inventors: Roanit Fernandes, Suresh Kumar Prema Mohanasundaram, Jitendra Bhargava Srinivas, Matthew J. Chowaniec
  • Publication number: 20220117600
    Abstract: An anvil buttress loading system includes an anvil assembly, an anvil buttress loading tool, and an anvil buttress. The anvil buttress is retainable on each of the anvil buttress loading tool and the anvil buttress, and is transferrable from the anvil buttress loading tool to the anvil assembly.
    Type: Application
    Filed: October 19, 2020
    Publication date: April 21, 2022
    Inventors: Pawel Abramek, Kenneth M. Cappola, Matthew J. Chowaniec, Roanit Fernandes
  • Patent number: 11272937
    Abstract: An end effector for use with a surgical stapler includes a staple cartridge assembly movable relative to an anvil assembly. The staple cartridge assembly defines a plurality of retention slots and a cavity. The staple cartridge assembly includes a plurality of staples, a plurality of pushers, an actuation sled, a surgical buttress material, a suture, and an anchoring button. The actuation sled is configured for movement along a length of the staple cartridge assembly to sequentially engage the plurality of pushers to eject the plurality of staples through the respective plurality of retention slots. The anchoring button is configured to be received in the cavity of the staple cartridge assembly such that a portion of the suture is supported in the cavity to be severed by a knife blade of the actuation sled when the actuation sled is advanced distally.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: March 15, 2022
    Assignee: Covidien LP
    Inventors: Roanit Fernandes, Suresh Kumar Prema Mohanasundaram, Jitendra Bhargava Srinivas, Matthew J. Chowaniec
  • Patent number: 11123068
    Abstract: A staple cartridge is adapted to enhance cell migration towards a wound site when staples are placed in tissue. In order to enhance cell migration, the staple cartridge is adapted to create an electrical potential within the tissue in the area of a wound or cut line. In embodiments, the electrical potential is created within the tissue by using staples in spaced rows formed of dissimilar metals having different anodic indexes to create a voltage gradient in the tissue to enhance cell migration toward the cut line.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: September 21, 2021
    Assignee: Covidien LP
    Inventors: Matthew Eschbach, Matthew J. Chowaniec, Johana Marinelli, Robert Knapp
  • Publication number: 20210219977
    Abstract: An end effector for use with a surgical stapler includes a staple cartridge assembly movable relative to an anvil assembly. The staple cartridge assembly defines a plurality of retention slots and a cavity. The staple cartridge assembly includes a plurality of staples, a plurality of pushers, an actuation sled, a surgical buttress material, a suture, and an anchoring button. The actuation sled is configured for movement along a length of the staple cartridge assembly to sequentially engage the plurality of pushers to eject the plurality of staples through the respective plurality of retention slots. The anchoring button is configured to be received in the cavity of the staple cartridge assembly such that a portion of the suture is supported in the cavity to be severed by a knife blade of the actuation sled when the actuation sled is advanced distally.
    Type: Application
    Filed: January 22, 2020
    Publication date: July 22, 2021
    Inventors: Roanit Fernandes, Suresh Kumar Prema Mohanasundaram, Jitendra Bhargava Srinivas, Matthew J. Chowaniec
  • Publication number: 20210177401
    Abstract: A surgical stapler includes a tool assembly that has a cartridge assembly, an anvil assembly, and a dissector tip. The dissector tip is moveable between a first configuration aligned with a longitudinal axis of the tool assembly and a second configuration defining an acute angle with the longitudinal axis of the tool assembly.
    Type: Application
    Filed: December 13, 2019
    Publication date: June 17, 2021
    Inventors: Pawel Abramek, Kenneth M. Cappola, Matthew J. Chowaniec, Zalika Walcott
  • Publication number: 20210137521
    Abstract: A staple cartridge is adapted to enhance cell migration towards a wound site when staples are placed in tissue. In order to enhance cell migration, the staple cartridge is adapted to create an electrical potential within the tissue in the area of a wound or cut line. In embodiments, the electrical potential is created within the tissue by using staples in spaced rows formed of dissimilar metals having different anodic indexes to create a voltage gradient in the tissue to enhance cell migration toward the cut line.
    Type: Application
    Filed: November 8, 2019
    Publication date: May 13, 2021
    Inventors: Matthew Eschbach, Matthew J. Chowaniec, Johana Marinelli, Robert Knapp
  • Publication number: 20200352568
    Abstract: The present disclosure is directed to a surgical apparatus, comprising an anvil jaw configured to form at least one surgical staple, a cartridge jaw configured to deploy one or more surgical staples against the anvil jaw, and a pressure distribution device attached to at least one of the anvil jaw and the cartridge jaw, wherein the pressure distribution device is configured to distribute a clamping pressure to a target tissue during a clamping and a stapling of the target tissue.
    Type: Application
    Filed: July 24, 2020
    Publication date: November 12, 2020
    Inventors: Matthew J. Chowaniec, Xingrui Chen, Peter T. Collings, Luis Dussan, Paul D. Richard
  • Patent number: 10786251
    Abstract: The present disclosure is directed to a surgical apparatus, comprising an anvil jaw configured to form at least one surgical staple, a cartridge jaw configured to deploy one or more surgical staples against the anvil jaw, and a pressure distribution device attached to at least one of the anvil jaw and the cartridge jaw, wherein the pressure distribution device is configured to distribute a clamping pressure to a target tissue during a clamping and a stapling of the target tissue.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: September 29, 2020
    Assignee: COVIDIEN LP
    Inventors: Matthew J. Chowaniec, Xingrui Chen, Peter T. Collings, Luis Dussan, Paul D. Richard