Patents by Inventor Troy J. Chapman

Troy J. Chapman 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: 8679114
    Abstract: An electrode sealing assembly for use with an electrosurgical instrument for sealing tissue includes first and second jaw members which are movable from a first position in spaced relation relative to one another to at least one second position for grasping tissue. The jaw members include electrically conductive sealing plates designed to selectively transmit electrosurgical energy to tissue disposed between the sealing plates. The jaw members also include a thermoelectric cooling plate having a first surface in direct contact with an outer surface of the sealing plate. The thermoelectric cooling plate includes first and second electrical connections on opposite sides of the jaw member. The first connection is configured to selectively transmit a first electrical potential and the second connection is configured to selectively transmit a second electrical potential such that heat generated by the sealing plates is transferred away from the tissue via the thermoelectric cooling plate.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: March 25, 2014
    Assignee: Covidien AG
    Inventors: Troy J. Chapman, Curt D. Hammill, Chelsea Shields, David A. Schechter, Ronald J. Podhajsky
  • Publication number: 20100204698
    Abstract: An electrode sealing assembly for use with an electrosurgical instrument for sealing tissue includes first and second jaw members which are movable from a first position in spaced relation relative to one another to at least one second position for grasping tissue. The jaw members include electrically conductive sealing plates designed to selectively transmit electrosurgical energy to tissue disposed between the sealing plates. The jaw members also include a thermoelectric cooling plate having a first surface in direct contact with an outer surface of the sealing plate. The thermoelectric cooling plate includes first and second electrical connections on opposite sides of the jaw member. The first connection is configured to selectively transmit a first electrical potential and the second connection is configured to selectively transmit a second electrical potential such that heat generated by the sealing plates is transferred away from the tissue via the thermoelectric cooling plate.
    Type: Application
    Filed: April 23, 2010
    Publication date: August 12, 2010
    Inventors: Troy J. Chapman, Curt D. Hammill, Chelsea Shields, David A. Schechter, Ronald J. Podhajsky
  • Patent number: 7753909
    Abstract: An electrode sealing assembly for use in combination with an electrosurgical instrument includes first and second jaw members which are movable from a first, spaced-apart position to a second position to grasp tissue. Each of the jaw members includes an insulative housing, a thermally conductive, electrically non-conductive material and a sealing plate. The insulative housing has a series of electromechanical interfaces which mate with a corresponding series of electromechanical interfaces which extend from the sealing plate such that the sealing plates are a capable of conducting bipolar energy through tissue held between the jaw members. The thermally conductive, electrically nonconductive material is configured to encapsulate and secure the sealing plate to the insulative housing.
    Type: Grant
    Filed: April 29, 2004
    Date of Patent: July 13, 2010
    Assignee: Covidien AG
    Inventors: Troy J. Chapman, Chelsea Shields, David A. Schechter
  • Patent number: 7708735
    Abstract: An electrode sealing assembly for use with an electrosurgical instrument for sealing tissue includes first and second jaw members which are movable from a first position in spaced relation relative to one another to at least one second position for grasping tissue. The jaw members include electrically conductive sealing plates designed to selectively transmit electrosurgical energy to tissue disposed between the sealing plates. The jaw members also include a thermoelectric cooling plate having a first surface in direct contact with an outer surface of the sealing plate. The thermoelectric cooling plate includes first and second electrical connections on opposite sides of the jaw member. The first connection is configured to selectively transmit a first electrical potential and the second connection is configured to selectively transmit a second electrical potential such that heat generated by the sealing plates is transferred away from the tissue via the thermoelectric cooling plate.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: May 4, 2010
    Assignee: Covidien AG
    Inventors: Troy J. Chapman, Curt D. Hammill, Chelsea Shields, David A. Schechter, Ronald J. Podhajsky
  • Patent number: 7147638
    Abstract: An electrode sealing assembly for use in combination with an electrosurgical instrument includes first and second jaw members which are movable from a first, spaced-apart position to a second position to grasp tissue. Each of the jaw members includes an insulative housing, a thermally conductive, electrically non-conductive material and a sealing plate. The insulative housing has a series of electromechanical interfaces which mate with a corresponding series of electromechanical interfaces which extend from the sealing plate such that the sealing plates are a capable of conducting bipolar energy through tissue held between the jaw members. The thermally conductive, electrically non-conductive material is configured to encapsulate and secure the sealing plate to the insulative housing.
    Type: Grant
    Filed: April 29, 2004
    Date of Patent: December 12, 2006
    Assignee: Sherwood Services AG
    Inventors: Troy J. Chapman, Chelsea Shields, David A. Schechter
  • Patent number: 7105002
    Abstract: An anastomosis device for use in coupling an end of a graft vessel to a side of a target vessel. The target vessel has an opening formed in a side wall thereof for insertion of the device. The device comprises a tubular member, at least a portion thereof being radially compressible to a compressed state for insertion of the tubular member into the opening in the target vessel and expandable from the compressed state to an expanded state for engagement of an inner graft vessel surface with an inner surface of the target vessel after insertion of the tubular member into the opening in the side wall of the target vessel. The compressible portion of the tubular member has an inner surface and an outer surface defining a wall thickness therebetween. The wall thickness of the compressible portion in its compressed state is less than the wall thickness of the compressible portion in its expanded state.
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: September 12, 2006
    Assignee: Ethicon, Inc.
    Inventor: Troy J. Chapman
  • Publication number: 20030135227
    Abstract: An anastomosis device for use in coupling an end of a graft vessel to a side of a target vessel. The target vessel has an opening formed in a side wall thereof for insertion of the device. The device comprises a tubular member, at least a portion thereof being radially compressible to a compressed state for insertion of the tubular member into the opening in the target vessel and expandable from the compressed state to an expanded state for engagement of an inner graft vessel surface with an inner surface of the target vessel after insertion of the tubular member into the opening in the side wall of the target vessel. The compressible portion of the tubular member has an inner surface and an outer surface defining a wall thickness therebetween. The wall thickness of the compressible portion in its compressed state is less than the wall thickness of the compressible portion is in its expanded state.
    Type: Application
    Filed: March 14, 2003
    Publication date: July 17, 2003
    Inventor: Troy J. Chapman
  • Publication number: 20010001827
    Abstract: An anastomosis device for use in coupling an end of a graft vessel to a side of a target vessel. The target vessel has an opening formed in a side wall thereof for insertion of the device. The device comprises a tubular member, at least a portion thereof being radially compressible to a compressed state for insertion of the tubular member into the opening in the target vessel and expandable from the compressed state to an expanded state for engagement of an inner graft vessel surface with an inner surface of the target vessel after insertion of the tubular member into the opening in the side wall of the target vessel. The compressible portion of the tubular member has an inner surface and an outer surface defining a wall thickness therebetween. The wall thickness of the compressible portion in its compressed state is less than the wall thickness of the compressible portion in its expanded state.
    Type: Application
    Filed: January 19, 2001
    Publication date: May 24, 2001
    Inventor: Troy J. Chapman
  • Patent number: 6119041
    Abstract: An apparatus for ablating body tissue, and particularly for creating linear lesions within a chamber of a patient's heart, includes an elongate member having an ablation section. The ablation section includes an infusion tube and a plurality of spaced electrodes. The infusion tube and electrodes are covered by a fluid permeable foam material, and the foam material is covered by a fluid impermeable covering having a plurality of holes formed in it. During use, the ablation section is positioned against tissue to be ablated. Radiofrequency energy is delivered to he electrodes while saline or other conductive fluid is delivered to the infusion tube. The fluid exits the infusion tube at the ablation section, contacts the electrodes, and carries RF energy from the electrodes through the foam, through the holes in the covering and into contact with the body tissue to form a burn in the body tissue.
    Type: Grant
    Filed: August 4, 1998
    Date of Patent: September 12, 2000
    Assignee: Cardiac Pathways Corporation
    Inventors: Mark L. Pomeranz, Troy J. Chapman, Darren R. Sherman, Mir Imran
  • Patent number: 6010500
    Abstract: A catheter device for creating linear lesions in endocardial tissue or other body tissue is described. The catheter includes an inner shaft telescopically received within an outer shaft. The inner shaft has one or more spaced apart electrodes along its distal section. The outer shaft member includes a fluid permeable window positionable to selectively overlay some or all of the electrodes when the relative positioning of the inner and outer shaft members is adjusted. During use, the window is positioned adjacent to the body tissue which is to be ablated and at least a portion of the electrodes are exposed through the window. RF energy is delivered to the electrodes while saline or other conductive fluid is simultaneously delivered through the infusion tube.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: January 4, 2000
    Assignee: Cardiac Pathways Corporation
    Inventors: Darren Sherman, Mark L. Pomeranz, Troy J. Chapman, N. Parker Willis, Dale Rieb, Robert B. West
  • Patent number: 5993462
    Abstract: In a shapable catheter and method for positioning a shapable catheter within a body cavity, a core wire is provided which includes a pre-shaped region bent into a predetermined shape. A catheter is provided which includes a lumen proportioned to slidably receive the core wire. The catheter includes a rigid proximal section and a flexible distal section. A pull wire may additionally be provided to allow the user to cause deflection at a distal portion of the catheter.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: November 30, 1999
    Assignee: Cardiac Pathways Corporation
    Inventors: Mark L. Pomeranz, Darren R. Sherman, Troy J. Chapman, Peter Park
  • Patent number: 5895417
    Abstract: An apparatus for ablating body tissue, and particularly for creating linear lesions within a chamber of a patient's heart, is provided. The apparatus includes an elongate member having an ablation section which includes an infusion tube and a plurality of spaced electrodes. The infusion tube and electrodes are covered by a fluid permeable foam material, and the foam material is covered by a fluid impermeable covering having a plurality of holes formed in it. During use, the ablation section is placed against tissue to be ablated. This positioning step is facilitated because the ablation section of the inventive devices may be manipulated in various ways. When the ablation section is properly positioned, radio frequency energy is delivered to the electrodes while saline or other conductive fluid is delivered to the infusion tube.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: April 20, 1999
    Assignee: Cardiac Pathways Corporation
    Inventors: Mark L. Pomeranz, Troy J. Chapman, Darren R. Sherman, Scott Tedder, Steven C. Anderson
  • Patent number: 5800482
    Abstract: An apparatus for ablating body tissue, and particularly for creating linear lesions within a chamber of a patient's heart, includes an elongate member having an ablation section. The ablation section includes an infusion tube and a plurality of spaced electrodes. The infusion tube and electrodes are covered by a fluid permeable foam material, and the foam material is covered by a fluid impermeable covering having a plurality of holes formed in it. During use, the ablation section is positioned against tissue to be ablated. Radiofrequency energy is delivered to the electrodes while saline or other conductive fluid is delivered to the infusion tube. The fluid exits the infusion tube at the ablation section, contacts the electrodes, and carries RF energy from the electrodes through the foam, through the holes in the covering and into contact with the body tissue to form a burn in the body tissue.
    Type: Grant
    Filed: March 6, 1996
    Date of Patent: September 1, 1998
    Assignee: Cardiac Pathways Corporation
    Inventors: Mark L. Pomeranz, Troy J. Chapman, Darren R. Sherman, Mir Imran