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).
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Patent number: 12383260Abstract: 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: GrantFiled: December 13, 2019Date of Patent: August 12, 2025Assignee: Covidien LPInventors: Pawel Abramek, Kenneth M. Cappola, Matthew J. Chowaniec, Zalika Walcott
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Patent number: 12349910Abstract: 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: GrantFiled: February 28, 2024Date of Patent: July 8, 2025Assignee: Covidien LPInventors: Roanit Fernandes, Suresh Kumar Prema Mohanasundaram, Jitendra Bhargava Srinivas, Matthew J. Chowaniec
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Publication number: 20240374256Abstract: 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: ApplicationFiled: May 2, 2024Publication date: November 14, 2024Inventors: Roanit A. Fernandes, Matthew J. Chowaniec
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Publication number: 20240252173Abstract: 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: ApplicationFiled: April 8, 2024Publication date: August 1, 2024Inventors: Pawel Abramek, Kenneth M. Cappola, Matthew J. Chowaniec, Roanit Fernandes
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Publication number: 20240197319Abstract: 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: ApplicationFiled: February 28, 2024Publication date: June 20, 2024Inventors: Roanit Fernandes, Suresh Kumar Prema Mohanasundaram, Jitendra Bhargava Srinivas, Matthew J. Chowaniec
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Patent number: 11974750Abstract: 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: GrantFiled: March 10, 2022Date of Patent: May 7, 2024Assignee: COVIDIEN LPInventors: Olesea Diaz-Chiosa, Robert H. Knapp, Matthew S. Eschbach, Matthew J. Chowaniec, Johana M. Marinelli
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Patent number: 11957348Abstract: 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: GrantFiled: July 28, 2022Date of Patent: April 16, 2024Assignee: COVIDIEN LPInventors: Pawel Abramek, Kenneth M. Cappola, Matthew J. Chowaniec, Roanit Fernandes
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Patent number: 11918218Abstract: 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: GrantFiled: February 24, 2022Date of Patent: March 5, 2024Assignee: COVIDIEN LPInventors: Roanit Fernandes, Suresh Kumar Prema Mohanasundaram, Jitendra Bhargava Srinivas, Matthew J. Chowaniec
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Publication number: 20220361875Abstract: 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: ApplicationFiled: July 28, 2022Publication date: November 17, 2022Inventors: Pawel Abramek, Kenneth M. Cappola, Matthew J. Chowaniec, Roanit Fernandes
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Publication number: 20220304692Abstract: 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: ApplicationFiled: March 10, 2022Publication date: September 29, 2022Inventors: Olesea Diaz-Chiosa, Robert H. Knapp, Matthew S. Eschbach, Matthew J. Chowaniec, Johana M. Marinelli
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Patent number: 11399833Abstract: 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: GrantFiled: October 19, 2020Date of Patent: August 2, 2022Assignee: Covidien LPInventors: Pawel Abramek, Kenneth M. Cappola, Matthew J. Chowaniec, Roanit Fernandes
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Publication number: 20220175379Abstract: 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: ApplicationFiled: February 24, 2022Publication date: June 9, 2022Inventors: Roanit Fernandes, Suresh Kumar Prema Mohanasundaram, Jitendra Bhargava Srinivas, Matthew J. Chowaniec
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Publication number: 20220117600Abstract: 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: ApplicationFiled: October 19, 2020Publication date: April 21, 2022Inventors: Pawel Abramek, Kenneth M. Cappola, Matthew J. Chowaniec, Roanit Fernandes
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Patent number: 11272937Abstract: 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: GrantFiled: January 22, 2020Date of Patent: March 15, 2022Assignee: Covidien LPInventors: Roanit Fernandes, Suresh Kumar Prema Mohanasundaram, Jitendra Bhargava Srinivas, Matthew J. Chowaniec
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Patent number: 11123068Abstract: 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: GrantFiled: November 8, 2019Date of Patent: September 21, 2021Assignee: Covidien LPInventors: Matthew Eschbach, Matthew J. Chowaniec, Johana Marinelli, Robert Knapp
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Publication number: 20210219977Abstract: 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: ApplicationFiled: January 22, 2020Publication date: July 22, 2021Inventors: Roanit Fernandes, Suresh Kumar Prema Mohanasundaram, Jitendra Bhargava Srinivas, Matthew J. Chowaniec
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Publication number: 20210177401Abstract: 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: ApplicationFiled: December 13, 2019Publication date: June 17, 2021Inventors: Pawel Abramek, Kenneth M. Cappola, Matthew J. Chowaniec, Zalika Walcott
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Publication number: 20210137521Abstract: 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: ApplicationFiled: November 8, 2019Publication date: May 13, 2021Inventors: Matthew Eschbach, Matthew J. Chowaniec, Johana Marinelli, Robert Knapp
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Publication number: 20200352568Abstract: 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: ApplicationFiled: July 24, 2020Publication date: November 12, 2020Inventors: Matthew J. Chowaniec, Xingrui Chen, Peter T. Collings, Luis Dussan, Paul D. Richard
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Patent number: 10786251Abstract: 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: GrantFiled: December 2, 2016Date of Patent: September 29, 2020Assignee: COVIDIEN LPInventors: Matthew J. Chowaniec, Xingrui Chen, Peter T. Collings, Luis Dussan, Paul D. Richard