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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Publication number: 20170172550Abstract: 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: ApplicationFiled: December 6, 2016Publication date: June 22, 2017Inventors: Nilay Mukherjee, Andrew Miesse, David C. Racenet
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Publication number: 20170172574Abstract: 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: March 6, 2017Publication date: June 22, 2017Inventors: Michael Zemlok, David C. Racenet
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Patent number: 9668731Abstract: 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 11, 2016Date of Patent: June 6, 2017Assignee: Covidien LPInventors: Michael A. Zemlok, David C. Racenet
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Patent number: 9585664Abstract: 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: June 13, 2016Date of Patent: March 7, 2017Assignee: Covidien LPInventors: Michael Zemlok, David C. Racenet
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Publication number: 20170042535Abstract: 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: October 31, 2016Publication date: February 16, 2017Inventors: David C. Racenet, Ralph A. Stearns, Philip C. Roy, John W. Beardsley, Lee Ann Olson
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Publication number: 20170007285Abstract: 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: ApplicationFiled: September 23, 2016Publication date: January 12, 2017Inventors: Ernest Aranyi, Dwight G. Bronson, David C. Racenet
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Publication number: 20160367250Abstract: 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: August 30, 2016Publication date: December 22, 2016Inventors: David C. Racenet, Philip Roy, John Beardsley, Lee Olson, Ralph Stearns, Clifford Emmons
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Patent number: 9517066Abstract: In accordance with the present disclosure a cartridge for use with a surgical stapler is disclosed. The cartridge has a plurality of individual directionally biased surgical staples therein and associated pushers for ejecting the staples from the cartridge, each of the staples being supported within the cartridge in spaced relation from adjacent staples and each of the staples comprising a backspan, and a pair of deformable legs depending from the backspan. The legs are configured to come into contact with anvil pockets for formation of the staple. Each of the staples has a substantially uniform cross-section along substantially the entire length of each leg, the cross-section includes a shape that is selected from the group consisting of a trapezoid, a triangle and a semicircle.Type: GrantFiled: October 5, 2010Date of Patent: December 13, 2016Assignee: Covidien LPInventors: David C. Racenet, Hanspeter Bayer, Scott Cunningham
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Patent number: 9498212Abstract: 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: March 20, 2013Date of Patent: November 22, 2016Assignee: Covidien LPInventors: David C. Racenet, Ralph A. Stearns, Philip C. Roy, John W. Beardsley, Lee Ann Olson
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Patent number: 9480492Abstract: 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: June 19, 2013Date of Patent: November 1, 2016Assignee: Covidien LPInventors: Ernest Aranyi, Dwight G. Bronson, David C. Racenet
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Publication number: 20160287255Abstract: 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: June 13, 2016Publication date: October 6, 2016Inventors: Michael Zemlok, David C. Racenet
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Patent number: 9433411Abstract: 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: March 7, 2013Date of Patent: September 6, 2016Assignee: Covidien LPInventors: David C Racenet, Philip Roy, John W Beardsley, Lee Ann Olson, Ralph Stearns, Clifford L Emmons
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Patent number: 9427231Abstract: A surgical stapling device for applying an array of surgical staples to tissue is provided. The stapling device includes an approximation mechanism for moving a cartridge assembly and an anvil assembly between spaced and approximated positions and a firing mechanism for ejecting the array of staples from the cartridge assembly. A single trigger is operable to effect approximation and firing of the device. The device also includes an alignment pin assembly which can be selectively manually or automatically advanced. The anvil assembly includes a stiffener plate which allows the device to have a reduced head portion profile.Type: GrantFiled: June 3, 2014Date of Patent: August 30, 2016Assignee: Covidien LPInventors: David C. Racenet, Timothy N. Wells
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Patent number: 9364222Abstract: 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: May 8, 2013Date of Patent: June 14, 2016Assignee: Covidien LPInventors: Michael Zemlok, David C. Racenet
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Publication number: 20160120540Abstract: 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 11, 2016Publication date: May 5, 2016Inventors: Michael A. Zemlok, David C. Racenet
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Patent number: 9241712Abstract: 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 28, 2015Date of Patent: January 26, 2016Assignee: Covidien LPInventors: Michael A. Zemlok, David C. Racenet
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Publication number: 20150327857Abstract: 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: July 28, 2015Publication date: November 19, 2015Inventors: Michael A. Zemlok, David C. Racenet
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Patent number: 9138226Abstract: A staple cartridge assembly comprising a cartridge housing, a plurality of staples, a plurality of staple pushers, and an actuation sled is disclosed. Each staple pusher includes a first base portion, and a second base portion laterally and longitudinally spaced from one another. The actuation sled disposed in the cartridge housing and is longitudinally translatable therethrough to move the staple pushers. The actuation sled includes at least a first cam wedge and a second cam wedge arranged to engage the first base portion and the second base portion of the pushers. The first cam wedge is laterally and longitudinally spaced apart from the second cam wedge.Type: GrantFiled: September 26, 2011Date of Patent: September 22, 2015Assignee: Covidien LPInventors: David C. Racenet, Philip Roy, John W. Beardsley, Lee Ann Olson, Ralph Stearns, Clifford L. Emmons
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Patent number: 9113876Abstract: 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: December 11, 2014Date of Patent: August 25, 2015Assignee: Covidien LPInventors: Michael A. Zemlok, David C. Racenet
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Publication number: 20150090764Abstract: 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: December 11, 2014Publication date: April 2, 2015Inventors: MICHAEL A. ZEMLOK, DAVID C. RACENET