Patents by Inventor David C. Racenet
David C. Racenet 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: 11944293Abstract: A surgical instrument including a handle assembly, a first endoscopic portion, a motor, and a first end effector is disclosed. The first endoscopic portion is selectively connectable to a distal portion of the handle assembly and defines a longitudinal axis. The first endoscopic portion includes a housing adjacent its proximal portion and includes an actuation member. The motor is disposed in mechanical cooperation with the housing of the first endoscopic portion and is operatively connected to the actuation member for moving the actuation member substantially along the longitudinal axis. The first end effector is selectively connectable to a distal portion of the first endoscopic portion and is configured to perform a first stapling function.Type: GrantFiled: January 20, 2022Date of Patent: April 2, 2024Assignee: COVIDIEN LPInventors: Michael A. Zemlok, David C. Racenet
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Patent number: 11517310Abstract: A surgical device comprising a first jaw member, a second jaw member, a clamping member and a clamp apparatus is disclosed. The clamping member is slidably positioned to translate at least partially through the first jaw member. The clamping member engages the first jaw member and the second jaw member, and has a knife blade for cutting tissue. A flange of the clamping member is configured to engage a cam surface to pivot the second jaw member with respect to the first jaw member from an open position toward an approximated position. The clamp apparatus is movable from a retracted position to an advanced position for preventing a gap between proximal portions of the first jaw member and the second jaw member from exceeding a predetermined distance. The clamping member and the clamp apparatus are separately movable.Type: GrantFiled: February 13, 2020Date of Patent: December 6, 2022Assignee: Covidien LPInventors: David C. Racenet, Philip Roy, John Beardsley, Lee Olson, Ralph Stearns, Clifford L. Emmons
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Patent number: 11399824Abstract: A tool assembly for a surgical stapling device includes a channel member for supporting a staple cartridge therein and an anvil to deform a plurality of staples ejected from the staple cartridge thereagainst. The tool assembly also includes a sled which is movable to force the staples from the cartridge against the anvil to staple tissue disposed between the anvil and the staple cartridge. A dynamic clamping member is included which has a pin which movably engages the anvil and a flange which movably engages the channel assembly. The dynamic clamping member is mounted to and movable with the sled. The pin and the flange of the dynamic clamping member cooperating to oppose the forces associated with clamping and stapling tissue and also to maintain a substantially uniform gap between the anvil and the staple cartridge during stapling of the tissue.Type: GrantFiled: March 15, 2019Date of Patent: August 2, 2022Assignee: Covidien LPInventors: Lee Ann Olson, Philip Roy, John W. Beardsley, Ralph Stearns, David C. Racenet, Clifford J. Emmons
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Patent number: 11399830Abstract: A surgical instrument includes an end effector configured to clamp, staple or cut tissue, a motor configured to drive the end effector, and a control system. The control system is configured to receive information about at least one tissue property and select a tissue management mode based on the at least one tissue property. The control system controls the motor based on the selected tissue management mode.Type: GrantFiled: May 6, 2019Date of Patent: August 2, 2022Assignee: Covidien LPInventor: David C. Racenet
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Patent number: 11357502Abstract: A surgical stapling device is disclosed which includes a handle assembly, an endoscopic body portion and a tool assembly. The tool assembly is rotatably and pivotally supported on a distal end of the endoscopic body portion. A tool assembly rotation mechanism is provided which includes a rotation knob, a substantially rigid tube and a flexible member interconnecting the rigid tube to the tool assembly. The substantially rigid tube translates rotation of the rotation knob to rotation of the flexible member and provides a channel for passage of other components of the surgical stapling device.Type: GrantFiled: February 28, 2020Date of Patent: June 14, 2022Assignee: Covidien LPInventors: David C. Racenet, Ralph A. Stearns, Philip C. Roy, John W. Beardsley, Lee A. Olson
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Publication number: 20220133298Abstract: A surgical instrument including a handle assembly, a first endoscopic portion, a motor, and a first end effector is disclosed. The first endoscopic portion is selectively connectable to a distal portion of the handle assembly and defines a longitudinal axis. The first endoscopic portion includes a housing adjacent its proximal portion and includes an actuation member. The motor is disposed in mechanical cooperation with the housing of the first endoscopic portion and is operatively connected to the actuation member for moving the actuation member substantially along the longitudinal axis. The first end effector is selectively connectable to a distal portion of the first endoscopic portion and is configured to perform a first stapling function.Type: ApplicationFiled: January 20, 2022Publication date: May 5, 2022Inventors: Michael A. Zemlok, David C. Racenet
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Patent number: 11246589Abstract: A surgical instrument including a handle assembly, a first endoscopic portion, a motor, and a first end effector is disclosed. The first endoscopic portion is selectively connectable to a distal portion of the handle assembly and defines a longitudinal axis. The first endoscopic portion includes a housing adjacent its proximal portion and includes an actuation member. The motor is disposed in mechanical cooperation with the housing of the first endoscopic portion and is operatively connected to the actuation member for moving the actuation member substantially along the longitudinal axis. The first end effector is selectively connectable to a distal portion of the first endoscopic portion and is configured to perform a first stapling function.Type: GrantFiled: July 3, 2019Date of Patent: February 15, 2022Assignee: COVIDIEN LPInventors: Michael A. Zemlok, David C. Racenet
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Patent number: 11224429Abstract: A surgical device comprising a first jaw member, a second jaw member, a clamping member and a clamp apparatus is disclosed. The clamping member is slidably positioned to translate at least partially through the first jaw member. The clamping member engages the first jaw member and the second jaw member, and has a knife blade for cutting tissue. A flange of the clamping member is configured to engage a cam surface to pivot the second jaw member with respect to the first jaw member from an open position toward an approximated position. The clamp apparatus is movable from a retracted position to an advanced position for preventing a gap between proximal portions of the first jaw member and the second jaw member from exceeding a predetermined distance. The clamping member and the clamp apparatus are separately movable.Type: GrantFiled: February 22, 2021Date of Patent: January 18, 2022Assignee: Covidien LPInventors: David C. Racenet, Philip Roy, John Beardsley, Lee Olson, Ralph Stearns, Clifford Emmons
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Patent number: 11224430Abstract: A surgical device comprising a first jaw member, a second jaw member, a clamping member and a clamp apparatus is disclosed. The clamping member is slidably positioned to translate at least partially through the first jaw member. The clamping member engages the first jaw member and the second jaw member, and has a knife blade for cutting tissue. A flange of the clamping member is configured to engage a cam surface to pivot the second jaw member with respect to the first jaw member from an open position toward an approximated position. The clamp apparatus is movable from a retracted position to an advanced position for preventing a gap between proximal portions of the first jaw member and the second jaw member from exceeding a predetermined distance. The clamping member and the clamp apparatus are separately movable.Type: GrantFiled: February 22, 2021Date of Patent: January 18, 2022Assignee: Covidien LPInventors: David C. Racenet, Philip Roy, John Beardsley, Lee Olson, Ralph Stearns, Clifford Emmons
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Patent number: 11207069Abstract: The present disclosure provides for a surgical instrument which includes a housing and an endoscopic portion extending distally from the housing and defining a first longitudinal axis. The surgical instrument also includes an end effector disposed adjacent a distal portion of the endoscopic portion. The end effector includes an anvil assembly and a cartridge assembly. The anvil assembly is pivotally coupled to the cartridge assembly to be movable from a first actuation position to at least one other second actuation position. The surgical instrument further includes a firing rod having a shaft defining a second longitudinal axis, the shaft having a cam member which is in mechanical cooperation with the anvil assembly and is configured to move the anvil assembly from the first actuation position to the at least one other second actuation position upon rotation of the firing rod about the second longitudinal axis.Type: GrantFiled: January 27, 2020Date of Patent: December 28, 2021Assignee: Covidien LPInventors: Michael Zemlok, David C. Racenet
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Publication number: 20210177414Abstract: A surgical device comprising a first jaw member, a second jaw member, a clamping member and a clamp apparatus is disclosed. The clamping member is slidably positioned to translate at least partially through the first jaw member. The clamping member engages the first jaw member and the second jaw member, and has a knife blade for cutting tissue. A flange of the clamping member is configured to engage a cam surface to pivot the second jaw member with respect to the first jaw member from an open position toward an approximated position. The clamp apparatus is movable from a retracted position to an advanced position for preventing a gap between proximal portions of the first jaw member and the second jaw member from exceeding a predetermined distance. The clamping member and the clamp apparatus are separately movable.Type: ApplicationFiled: February 22, 2021Publication date: June 17, 2021Inventors: David C. Racenet, Philip Roy, John Beardsley, Lee Olson, Ralph Stearns, Clifford Emmons
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Publication number: 20210169479Abstract: A surgical device comprising a first jaw member, a second jaw member, a clamping member and a clamp apparatus is disclosed. The clamping member is slidably positioned to translate at least partially through the first jaw member. The clamping member engages the first jaw member and the second jaw member, and has a knife blade for cutting tissue. A flange of the clamping member is configured to engage a cam surface to pivot the second jaw member with respect to the first jaw member from an open position toward an approximated position. The clamp apparatus is movable from a retracted position to an advanced position for preventing a gap between proximal portions of the first jaw member and the second jaw member from exceeding a predetermined distance. The clamping member and the clamp apparatus are separately movable.Type: ApplicationFiled: February 22, 2021Publication date: June 10, 2021Inventors: David C. Racenet, Philip Roy, John Beardsley, Lee Olson, Ralph Stearns, Clifford Emmons
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Patent number: 10959723Abstract: A tool assembly for a surgical stapling device includes a channel member for supporting a staple cartridge therein and an anvil to deform a plurality of staples ejected from the staple cartridge thereagainst. The tool assembly also includes a sled which is movable to force the staples from the cartridge against the anvil to staple tissue disposed between the anvil and the staple cartridge. A dynamic clamping member is included which has a pin which movably engages the anvil and a flange which movably engages the channel assembly. The dynamic clamping member is mounted to and movable with the sled. The pin and the flange of the dynamic clamping member cooperating to oppose the forces associated with clamping and stapling tissue and also to maintain a substantially uniform gap between the anvil and the staple cartridge during stapling of the tissue.Type: GrantFiled: July 11, 2018Date of Patent: March 30, 2021Assignee: Covidien LPInventors: Lee Ann Olson, Philip Roy, John W. Beardsley, Ralph Stearns, David C. Racenet, Clifford J. Emmons
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Publication number: 20200197004Abstract: A surgical stapling device is disclosed which includes a handle assembly, an endoscopic body portion and a tool assembly. The tool assembly is rotatably and pivotally supported on a distal end of the endoscopic body portion. A tool assembly rotation mechanism is provided which includes a rotation knob, a substantially rigid tube and a flexible member interconnecting the rigid tube to the tool assembly. The substantially rigid tube translates rotation of the rotation knob to rotation of the flexible member and provides a channel for passage of other components of the surgical stapling device.Type: ApplicationFiled: February 28, 2020Publication date: June 25, 2020Inventors: David C. Racenet, Ralph A. Stearns, Philip C. Roy, John W. Beardsley, Lee A. Olson
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Publication number: 20200178962Abstract: A surgical device comprising a first jaw member, a second jaw member, a clamping member and a clamp apparatus is disclosed. The clamping member is slidably positioned to translate at least partially through the first jaw member. The clamping member engages the first jaw member and the second jaw member, and has a knife blade for cutting tissue. A flange of the clamping member is configured to engage a cam surface to pivot the second jaw member with respect to the first jaw member from an open position toward an approximated position. The clamp apparatus is movable from a retracted position to an advanced position for preventing a gap between proximal portions of the first jaw member and the second jaw member from exceeding a predetermined distance. The clamping member and the clamp apparatus are separately movable.Type: ApplicationFiled: February 13, 2020Publication date: June 11, 2020Inventors: David C. Racenet, Philip Roy, John Beardsley, Lee Olson, Ralph Stearns, Clifford L. Emmons
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Publication number: 20200155154Abstract: The present disclosure provides for a surgical instrument which includes a housing and an endoscopic portion extending distally from the housing and defining a first longitudinal axis. The surgical instrument also includes an end effector disposed adjacent a distal portion of the endoscopic portion. The end effector includes an anvil assembly and a cartridge assembly. The anvil assembly is pivotally coupled to the cartridge assembly to be movable from a first actuation position to at least one other second actuation position. The surgical instrument further includes a firing rod having a shaft defining a second longitudinal axis, the shaft having a cam member which is in mechanical cooperation with the anvil assembly and is configured to move the anvil assembly from the first actuation position to the at least one other second actuation position upon rotation of the firing rod about the second longitudinal axis.Type: ApplicationFiled: January 27, 2020Publication date: May 21, 2020Inventors: Michael Zemlok, David C. Racenet
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Patent number: 10646219Abstract: A surgical stapling device is disclosed which includes a handle assembly, an endoscopic body portion and a tool assembly. The tool assembly is rotatably and pivotally supported on a distal end of the endoscopic body portion. A tool assembly rotation mechanism is provided which includes a rotation knob, a substantially rigid tube and a flexible member interconnecting the rigid tube to the tool assembly. The substantially rigid tube translates rotation of the rotation knob to rotation of the flexible member and provides a channel for passage of other components of the surgical stapling device.Type: GrantFiled: October 31, 2016Date of Patent: May 12, 2020Assignee: Covidien LPInventors: David C. Racenet, Ralph A. Stearns, Philip C. Roy, John W. Beardsley, Lee Ann Olson
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Patent number: 10624616Abstract: A surgical instrument includes a handle portion, first and second jaw members operably coupled to the handle portion, and first and second sensors associated with the first or second jaw members. The first sensor is configured to measure local perfusion in tissue grasped between the first and second jaw members, and the second sensor is configured to measure a pressure applied to the tissue by the first and second jaw members.Type: GrantFiled: December 6, 2016Date of Patent: April 21, 2020Assignee: Covidien LPInventors: Nilay Mukherjee, Andrew Miesse, David C. Racenet
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Patent number: 10603037Abstract: A surgical device comprising a first jaw member, a second jaw member, a clamping member and a clamp apparatus is disclosed. The clamping member is slidably positioned to translate at least partially through the first jaw member. The clamping member engages the first jaw member and the second jaw member, and has a knife blade for cutting tissue. A flange of the clamping member is configured to engage a cam surface to pivot the second jaw member with respect to the first jaw member from an open position toward an approximated position. The clamp apparatus is movable from a retracted position to an advanced position for preventing a gap between proximal portions of the first jaw member and the second jaw member from exceeding a predetermined distance. The clamping member and the clamp apparatus are separately movable.Type: GrantFiled: June 17, 2019Date of Patent: March 31, 2020Assignee: Covidien LPInventors: David C. Racenet, Philip Roy, John Beardsley, Lee Olson, Ralph Stearns, Clifford Emmons
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Patent number: 10543009Abstract: A surgical device has a jaw assembly with a first jaw and a second jaw, a pivoting linkage, and a camming assembly configured to pivot the jaw assembly. A cam slot having a first portion, a second portion, and a third portion may have a Y shaped configuration. A flexible shaft allows further pivoting of the jaw assembly.Type: GrantFiled: September 23, 2016Date of Patent: January 28, 2020Assignee: Covidien LPInventors: Ernest Aranyi, Dwight G. Bronson, David C. Racenet