Patents by Inventor Anthony T. Nguyen
Anthony T. Nguyen 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: 10149680Abstract: A surgical instrument comprising a gap setting system is disclosed.Type: GrantFiled: April 9, 2014Date of Patent: December 11, 2018Assignee: Ethicon LLCInventors: Shailendra K. Parihar, John S. Kimsey, Robert L. Koch, Jr., Anil K. Nalagatla, Anthony T. Nguyen
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Publication number: 20140305991Abstract: A drive system for a surgical instrument is disclosed. The system can comprise a drive assembly, a first output assembly, and a second output assembly. The drive assembly can be coupled to a motor, and can operably transmit a force from the motor to the first output assembly and/or the second output assembly. The drive system can further comprise a shifter assembly, which can shift engagement of the drive assembly between the first output assembly and the second output assembly. A spring-loaded latch for releasably securing a drive member of n handle to a drive member socket of a coupling arrangement in a surgical end effector is also disclosed.Type: ApplicationFiled: April 9, 2014Publication date: October 16, 2014Applicant: ETHICON ENDO-SURGERY, INC.Inventors: Shailendra K. Parihar, John S. Kimsey, Robert L. Koch, JR., Anil K. Nalagatla, Anthony T. Nguyen
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Patent number: 8496673Abstract: A surgical clip applier and methods for applying surgical clips to a vessel, duct, shunt, etc., during a surgical procedure are provided. In one embodiment, a surgical clip applier is provided and can include a housing having a trigger movably coupled thereto and an elongate shaft extending therefrom with opposed jaws formed on a distal end thereof. The clip applier can include an advancer assembly disposed within the elongate shaft and configured to advance one of a plurality of clips disposed within the elongate shaft into the opposed jaws. A feeder shoe can be disposed within the elongate shaft and can be configured to engage and prevent the advancer assembly from moving to a proximal position after the advancer assembly has moved to a distal position to advance a proximal-most clip into the opposed jaws. This can indicate to a user that a clip supply of the surgical clip applier is depleted.Type: GrantFiled: May 19, 2011Date of Patent: July 30, 2013Assignee: Ethicon Endo-Surgery, Inc.Inventors: Anthony T. Nguyen, Denzel Z. Herrera-Davis
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Patent number: 8308755Abstract: A retractor for use in laparoscopic procedures includes an upper retractor ring, a lower retractor ring, and a retractor sheath extending between the upper retractor ring and the lower retractor ring to form a tubular passageway through which instruments or a medical practitioner's hands may pass during a medical procedure. The retractor sheath includes an elliptical passageway extending between lower retractor ring and the upper retractor ring.Type: GrantFiled: September 24, 2007Date of Patent: November 13, 2012Assignee: Ethicon Endo-Surgery, Inc.Inventors: Michael D. Cronin, Anthony T. Nguyen
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Patent number: 8267945Abstract: A surgical clip applier and methods for applying surgical clips to a vessel, duct, shunt, etc., during a surgical procedure are provided. In one embodiment, a surgical clip applier is provided and can include a housing having a trigger movably coupled thereto and an elongate shaft extending therefrom with opposed jaws formed on a distal end thereof. The clip applier can include an advancer assembly disposed within the elongate shaft and configured to advance one of a plurality of clips disposed within the elongate shaft into the opposed jaws. A feeder shoe can be disposed within the elongate shaft and can be configured to engage and prevent the advancer assembly from moving to a proximal position after the advancer assembly has moved to a distal position to advance a proximal-most clip into the opposed jaws. This can indicate to a user that a clip supply of the surgical clip applier is depleted.Type: GrantFiled: December 1, 2009Date of Patent: September 18, 2012Assignee: Ethicon Endo-Surgery, Inc.Inventors: Anthony T. Nguyen, Denzel Z. Herrera-Davis
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Patent number: 8262679Abstract: A surgical clip applier and methods for applying surgical clips to a vessel, duct, shunt, etc., during a surgical procedure are provided. In one embodiment, a surgical clip applier is provided and can include a shaft having a proximal end and a distal end with opposed jaws thereon, a guide member disposed within the shaft and configured to guide a clip into the opposed jaws, the guide member having a channel formed in a surface thereof, and an advancer movably disposed within the shaft and configured to advance a clip over the guide member and into the opposed jaws, the advancer having a distal tip that slidably engages the channel for maintaining contact with a surgical clip as it is advanced into the opposed jaws. In other embodiments, the guide member can also include a proximal channel formed in a superior surface thereof.Type: GrantFiled: October 9, 2009Date of Patent: September 11, 2012Assignee: Ethicon Endo-Surgery, Inc.Inventor: Anthony T. Nguyen
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Patent number: 8075482Abstract: A laparoscopic surgical access device comprises a first frame and a second frame having relative axial positions. A flexible and resilient iris valve is connected to the first and second frames and has a closed position and an opened position based on the relative angular position of the first and second frames. A lock is connected to the first and second frames, the lock being selectively operative to prevent relative rotational movement in a first rotational direction. One embodiment uses a ratchet and pawl mechanism operable with a control ring. Another embodiment uses a ratchet and pawl mechanism operable with a button. Yet another embodiment uses a wedge track and ball mechanism.Type: GrantFiled: February 22, 2007Date of Patent: December 13, 2011Assignee: Ethicon Endo-Surgery, Inc.Inventors: Andrew T. Beckman, Patrick J. Minnelli, Anthony T. Nguyen, Chester O. Baxter, III, Michele D'Arcangelo
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Patent number: 8070770Abstract: A laparoscopic surgical access device comprises a first frame and a second frame having relative axial positions. A flexible and resilient iris valve is connected to the first and second frames and has a closed position and an opened position based on the relative angular position of the first and second frames. A lock is connected to the first and second frames, the lock being selectively operative to prevent relative rotational movement in a first rotational direction. One embodiment uses a ratchet and pawl mechanism operable with a control ring. Another embodiment uses a ratchet and pawl mechanism operable with a button. Yet another embodiment uses a wedge track and ball mechanism.Type: GrantFiled: February 22, 2007Date of Patent: December 6, 2011Assignee: Ethicon Endo-Surgery, Inc.Inventors: Andrew T. Beckman, Patrick J. Minnelli, Anthony T. Nguyen, Chester O. Baxter, III, Michele D'Arcangelo
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Publication number: 20110218556Abstract: A surgical clip applier and methods for applying surgical clips to a vessel, duct, shunt, etc., during a surgical procedure are provided. In one embodiment, a surgical clip applier is provided and can include a housing having a trigger movably coupled thereto and an elongate shaft extending therefrom with opposed jaws formed on a distal end thereof. The clip applier can include an advancer assembly disposed within the elongate shaft and configured to advance one of a plurality of clips disposed within the elongate shaft into the opposed jaws. A feeder shoe can be disposed within the elongate shaft and can be configured to engage and prevent the advancer assembly from moving to a proximal position after the advancer assembly has moved to a distal position to advance a proximal-most clip into the opposed jaws. This can indicate to a user that a clip supply of the surgical clip applier is depleted.Type: ApplicationFiled: May 19, 2011Publication date: September 8, 2011Applicant: ETHICON ENDO-SURGERY, INC.Inventors: Anthony T. Nguyen, Denzel Z. Herrera-Davis
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Publication number: 20110087243Abstract: A surgical clip applier and methods for applying surgical clips to a vessel, duct, shunt, etc., during a surgical procedure are provided. In one embodiment, a surgical clip applier is provided and can include a housing having a trigger movably coupled thereto and an elongate shaft extending therefrom with opposed jaws formed on a distal end thereof. The clip applier can include an advancer assembly disposed within the elongate shaft and configured to advance one of a plurality of clips disposed within the elongate shaft into the opposed jaws. A feeder shoe can be disposed within the elongate shaft and can be configured to engage and prevent the advancer assembly from moving to a proximal position after the advancer assembly has moved to a distal position to advance a proximal-most clip into the opposed jaws. This can indicate to a user that a clip supply of the surgical clip applier is depleted.Type: ApplicationFiled: December 1, 2009Publication date: April 14, 2011Applicant: ETHICON ENDO-SURGERY, INC.Inventors: Anthony T. Nguyen, Denzel Z. Herrera-Davis
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Publication number: 20110087241Abstract: A surgical clip applier and methods for applying surgical clips to a vessel, duct, shunt, etc., during a surgical procedure are provided. In one embodiment, a surgical clip applier is provided and can include a shaft having a proximal end and a distal end with opposed jaws thereon, a guide member disposed within the shaft and configured to guide a clip into the opposed jaws, the guide member having a channel formed in a surface thereof, and an advancer movably disposed within the shaft and configured to advance a clip over the guide member and into the opposed jaws, the advancer having a distal tip that slidably engages the channel for maintaining contact with a surgical clip as it is advanced into the opposed jaws. In other embodiments, the guide member can also include a proximal channel formed in a superior surface thereof.Type: ApplicationFiled: October 9, 2009Publication date: April 14, 2011Applicant: Ethicon Endo-Surgery, Inc.Inventor: Anthony T. Nguyen
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Publication number: 20100261972Abstract: Various methods and devices are provided for sealing a working channel of a surgical access device using a non-resealable membrane. The non-resealable membrane seals the working channel of the device before use and is punctured when a surgical instrument is inserted into the device such that it will no longer provide a seal in the working channel.Type: ApplicationFiled: April 8, 2009Publication date: October 14, 2010Applicant: Ethicon Endo-Surgery, Inc.Inventors: Christopher W. Widenhouse, Katherine J. Schmid, Anthony T. Nguyen, Denzel Z. Herrera-Davis, Patrick J. Minnelli, Frederick E. Shelton, IV
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Publication number: 20090082631Abstract: A retractor for use in laparoscopic procedures includes an upper retractor ring, a lower retractor ring, and a retractor sheath extending between the upper retractor ring and the lower retractor ring to form a tubular passageway through which instruments or a medical practitioner's hands may pass during a medical procedure. The retractor sheath includes an elliptical passageway extending between lower retractor ring and the upper retractor ring.Type: ApplicationFiled: September 24, 2007Publication date: March 26, 2009Inventors: Michael D. Cronin, Anthony T. Nguyen
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Publication number: 20080208175Abstract: A laparoscopic surgical access device comprises a first frame and a second frame having relative axial positions. A flexible and resilient iris valve is connected to the first and second frames and has a closed position and an opened position based on the relative angular position of the first and second frames. A lock is connected to the first and second frames, the lock being selectively operative to prevent relative rotational movement in a first rotational direction. One embodiment uses a ratchet and pawl mechanism operable with a control ring. Another embodiment uses a ratchet and pawl mechanism operable with a button. Yet another embodiment uses a wedge track and ball mechanism.Type: ApplicationFiled: February 22, 2007Publication date: August 28, 2008Inventors: Andrew T. Beckman, Patrick J. Minnelli, Anthony T. Nguyen, Chester O. Baxter, Michele D'Arcangelo
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Publication number: 20080208222Abstract: A laparoscopic surgical access device comprises a first frame and a second frame having relative axial positions. A flexible and resilient iris valve is connected to the first and second frames and has a closed position and an opened position based on the relative angular position of the first and second frames. A lock is connected to the first and second frames, the lock being selectively operative to prevent relative rotational movement in a first rotational direction. One embodiment uses a ratchet and pawl mechanism operable with a control ring. Another embodiment uses a ratchet and pawl mechanism operable with a button. Yet another embodiment uses a wedge track and ball mechanism.Type: ApplicationFiled: February 22, 2007Publication date: August 28, 2008Inventors: Andrew T. Beckman, Patrick J. Minnelli, Anthony T. Nguyen, Chester O. Baxter, Michele D'Arcangelo
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Patent number: 6120462Abstract: A method is provided for removing at least one tissue sample from a surgical patient using a biopsy instrument. The biopsy instrument comprises an elongated piercer having a piercer lumen extending therethrough. The biopsy instrument further comprises a cutter rotatably and translationally positionable relative to the piercer. The piercer has a port for receiving and transferring the tissue portion into the piercer lumen.Type: GrantFiled: March 31, 1999Date of Patent: September 19, 2000Assignee: Ethicon Endo-Surgery, Inc.Inventors: John A. Hibner, Chris K. Quatrochi, Randy M. Raczek, Mark A. Burdorff, Anthony T. Nguyen
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Patent number: 6117158Abstract: A hand held surgical instrument for grasping and clamping tissue is disclosed. The surgical instrument has a handle body assembly and an elongated shaft. The shaft is connected to the handle body assembly at a proximal end and has an end effector at a distal end. The end effector is operably coupled to an actuation member extending from the handle body. The actuation member is moveable toward and away from the handle body to open and close the end effector. A locking tab is located on the handle body assembly and is moveable between a locked position and an unlocked position. A locking rod is movably engaged with a hole in the locking tab. When the locking tab is in the unlocked position, the actuation member is free to move towards and away from the handle body assembly to open and close the end effector. When the locking tab is in the locked position, movement to open the actuation member is prevented.Type: GrantFiled: July 7, 1999Date of Patent: September 12, 2000Assignee: Ethicon Endo-Surgery, Inc.Inventors: John P. Measamer, Robert L. Koch, Jr., Robert F. Welch, Anthony T. Nguyen
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Patent number: 6086544Abstract: The present invention is a control apparatus for removing at least one tissue sample from a surgical patient using a surgical biopsy device. The biopsy device comprises an elongated piercer having a piercer lumen extending therethrough, and a cutter rotatably and axially positionable relative to the piercer. The piercer has a port for receiving and transferring the tissue sample into the piercer lumen. The biopsy device further comprises a rotation motor for rotating the cutter and a translation motor for translating the cutter in the axial direction. In one embodiment of the present invention, the control apparatus comprises a computing device for the coordinated control of the rotation and translation motors. The control apparatus further comprises a first sensor operationally connected to the rotation motor for supplying a rotation signal to the computing device for measuring the rotational speed of the cutter.Type: GrantFiled: March 31, 1999Date of Patent: July 11, 2000Assignee: Ethicon Endo-Surgery, Inc.Inventors: John A. Hibner, Chris K. Quatrochi, Randy M. Raczek, Mark A. Burdorff, Anthony T. Nguyen