Patents by Inventor Keith Ratcliff

Keith Ratcliff 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).

  • Publication number: 20080017692
    Abstract: An endoscopic surgical apparatus is provided for placing lateral lines of surgical fasteners into body tissue. The apparatus includes a frame portion, an elongated portion extending from the frame portion, and an articulating fastener applying assembly associated with a distal end of the elongated portion. The fastener applying assembly includes a base portion, a staple cartridge housing, and an anvil member which has a forming surface thereon against which surgical fasteners are driven as they are ejected from the cartridge housing. A first mechanism is provided for effectuating the rotation of the fastener applying assembly about an axis defined by the body portion, a second mechanism is provided for effectuating the articulation of the fastener applying assembly, and a third mechanism is provided for independently rotating the cartridge housing and anvil member relative to a longitudinal axis defined by the base position to increase the range of operability of the apparatus.
    Type: Application
    Filed: August 31, 2007
    Publication date: January 24, 2008
    Inventors: David Green, Keith Ratcliff, Keith Milliman, Henry Sienkiewicz, Mitchell Palmer, Graham Bryan
  • Patent number: 7296724
    Abstract: An endoscopic surgical apparatus is provided for placing lateral lines of surgical fasteners into body tissue. The apparatus includes a frame portion, an elongated portion extending from the frame portion, and an articulating fastener applying assembly associated with a distal end of the elongated portion. The fastener applying assembly includes a base portion, a staple cartridge housing, and an anvil member which has a forming surface thereon against which surgical fasteners are driven as they are ejected from the cartridge housing. A first mechanism is provided for effectuating the rotation of the fastener applying assembly about an axis defined by the body portion, a second mechanism is provided for effectuating the articulation of the fastener applying assembly, and a third mechanism is provided for independently rotating the cartridge housing and anvil member relative to a longitudinal axis defined by the base position to increase the range of operability of the apparatus.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: November 20, 2007
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Keith Ratcliff, Keith Milliman, Henry R. Sienkiewicz, Mitchell J. Palmer, Graham W. Bryan
  • Publication number: 20070129739
    Abstract: Surgical instrumentation and methods for performing a bypass procedure in a digestive system incorporate laparoscopic techniques to minimize surgical trauma to the patient. The instrumentation includes an outer guide member dimensioned for insertion and passage through an esophagus of a patient and defining an opening therein extending at least along a portion of the length of the outer guide member, an elongate anvil delivery member at least partially disposed within the opening of the outer guide member and being adapted for longitudinal movement within the outer guide member between an initial position and an actuated position and an anvil operatively engageable with the delivery member. The anvil includes an anvil rod defining a longitudinal axis and an anvil head connected to the anvil rod.
    Type: Application
    Filed: December 15, 2006
    Publication date: June 7, 2007
    Inventors: Tim Nolan, Ernie Aranyi, John Klinger, Keith Ratcliff, John Robertson
  • Patent number: 7179267
    Abstract: Surgical instrumentation and methods for performing a bypass procedure in a digestive system incorporate laparoscopic techniques to minimize surgical trauma to the patient. The instrumentation includes an outer guide member dimensioned for insertion and passage through an esophagus of a patient and defining an opening therein extending at least along a portion of the length of the outer guide member, an elongate anvil delivery member at least partially disposed within the opening of the outer guide member and being adapted for longitudinal movement within the outer guide member between an initial position and an actuated position and an anvil operatively engageable with the delivery member. The anvil includes an anvil rod defining a longitudinal axis and an anvil head connected to the anvil rod.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: February 20, 2007
    Assignee: Tyco Healthcare Group LP
    Inventors: Tim Nolan, Ernie Aranyi, John Klinger, Keith Ratcliff, John Charles Robertson
  • Publication number: 20060229643
    Abstract: Surgical instrumentation and methods for performing a bypass procedure in a digestive system incorporate laparoscopic techniques to minimize surgical trauma to the patient. The instrumentation includes an outer guide member dimensioned for insertion and passage through an esophagus of a patient and defining an opening therein extending at least along a portion of the length of the outer guide member, an elongate anvil delivery member at least partially disposed within the opening of the outer guide member and being adapted for longitudinal movement within the outer guide member between an initial position and an actuated position and an anvil operatively engageable with the delivery member. The anvil includes an anvil rod defining a longitudinal axis and an anvil head connected to the anvil rod.
    Type: Application
    Filed: June 6, 2006
    Publication date: October 12, 2006
    Inventors: Tim Nolan, Ernie Aranyi, John Klinger, Keith Ratcliff, John Robertson
  • Patent number: 7041055
    Abstract: An improved surgical dilator extractor is introduced into the abdominal cavity through a trocar cannula and expanded, forming a tissue receiving space, at the distal end. The tissue receiving space is enlarged by passing a grasper through a lumen of the dilator extractor to interact with a guide surface on the interior of dilator extractor to expand a dilator portion having a single leaf beyond the natural resiliency of the leaf. The tissue being extracted is then manipulated into the space with the grasper. The tissue is then removed from the cavity by the surgeon applying a force onto the dilator extractor that insures the elongation of the tissue and temporarily dilates the entry wound to the extent necessary for the tissue to be removed. Alternative embodiments of the surgical dilator extractor and related instrument tool sets and methods for the use thereof also are disclosed.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: May 9, 2006
    Inventors: Wayne P. Young, John I. Shipp, Keith Ratcliff
  • Publication number: 20060025781
    Abstract: A surgical dilator extractor is introduced into the abdominal cavity through a trocar cannula and expanded, forming a tissue receiving space, at the distal end. The tissue that is to be extracted is then suctioned to the dilator. The tissue is then removed from the cavity by the surgeon applying a force onto the dilator extractor that insures the elongation of the tissue and temporarily dilates the entry wound to the extent necessary for the tissue to be removed. Alternative embodiments of the surgical dilator extractor and related instrument tool sets and methods for the use thereof also are disclosed.
    Type: Application
    Filed: March 2, 2005
    Publication date: February 2, 2006
    Inventors: Wayne Young, John Shipp, Keith Ratcliff
  • Publication number: 20050184126
    Abstract: An endoscopic surgical apparatus is provided for placing lateral lines of surgical fasteners into body tissue. The apparatus includes a frame portion, an elongated portion extending from the frame portion, and an articulating fastener applying assembly associated with a distal end of the elongated portion. The fastener applying assembly includes a base portion, a staple cartridge housing, and an anvil member which has a forming surface thereon against which surgical fasteners are driven as they are ejected from the cartridge housing. A first mechanism is provided for effectuating the rotation of the fastener applying assembly about an axis defined by the body portion, a second mechanism is provided for effectuating the articulation of the fastener applying assembly, and a third mechanism is provided for independently rotating the cartridge housing and anvil member relative to a longitudinal axis defined by the base position to increase the range of operability of the apparatus.
    Type: Application
    Filed: March 7, 2005
    Publication date: August 25, 2005
    Inventors: David Green, Keith Ratcliff, Keith Milliman, Henry Sienkiewicz, Mitchell Palmer, Graham Bryan
  • Publication number: 20050149063
    Abstract: A surgical ligation instrument and method for ligating a fluid carrying structure are provided. In one aspect, there is provided a surgical ligation instrument and method for deploying a spring clip over the fluid carrying structure without pre-clamping the fluid carrying structure.
    Type: Application
    Filed: October 20, 2004
    Publication date: July 7, 2005
    Inventors: Wayne Young, Keith Ratcliff, George Trutza
  • Patent number: 6877647
    Abstract: An endoscopic surgical apparatus is provided for placing lateral lines of surgical fasteners into body tissue. The apparatus includes a frame portion, an elongated portion extending from the frame portion, and an articulating fastener applying assembly associated with a distal end of the elongated portion. The fastener applying assembly includes a base portion, a staple cartridge housing, and an anvil member which has a forming surface thereon against which surgical fasteners are driven as they are ejected from the cartridge housing. A first mechanism is provided for effectuating the rotation of the fastener applying assembly about an axis defined by the body portion, a second mechanism is provided for effectuating the articulation of the fastener applying assembly, and a third mechanism is provided for independently rotating the cartridge housing and anvil member relative to a longitudinal axis defined by the base position to increase the range of operability of the apparatus.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: April 12, 2005
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Keith Ratcliff, Keith Milliman, Henry R. Sienkiewicz, Mitchell J. Palmer, Graham W. Bryan
  • Publication number: 20040260339
    Abstract: An arterial closure device for use following coronary catherization procedures to close arterial access openings through the arterial wall while permitting post operative flow through the artery includes a housing having proximal and distal ends, and defining a longitudinal axis, first and second arterial tissue everting members mounted adjacent the distal end of the housing and first and second jaw members mounted adjacent the first and second tissue engaging members. The first and second arterial tissue everting members are dimensioned for at least partial positioning within the arterial access opening in the arterial wall and are deployable in at least a radial outward direction relative to the longitudinal axis of the housing to engage respective opposed arterial tissue portions on opposed sides of the opening and move the tissue arterial portions to an everted condition thereof.
    Type: Application
    Filed: January 12, 2004
    Publication date: December 23, 2004
    Inventors: Roberto Pedros, Keith Ratcliff, John C. Robertson
  • Patent number: 6827712
    Abstract: Disposable loading units (DLUs) configured for mounting to a robotic arm for performing at least one surgical task are presented. Each DLU includes an attachment platform having at least one connector for engaging at least one connector on a distal end of the robotic arm for connecting the DLU to the robotic arm, a head portion connected to the attachment platform at one end and configured for housing an electro-mechanical actuation assembly therein, and at least one surgical tool member extending from the head portion and operatively associated with the electro-mechanical actuation assembly for controlling the operation and movement of the at least one surgical tool member. The at least one surgical tool member may include a cutting assembly, an aortic hole punch assembly, a lasing assembly, a coring assembly, or a vascular suturing assembly.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: December 7, 2004
    Assignee: United States Surgical Corporation
    Inventors: H. Jonathan Tovey, Keith Ratcliff, Kenneth E. Toso, Peter W. J. Hinchliffe
  • Publication number: 20040243109
    Abstract: Disposable loading units (DLUs) configured for mounting to a robotic arm for performing at least one surgical task are presented. Each DLU includes an attachment platform having at least one connector for engaging at least one connector on a distal end of the robotic arm for connecting the DLU to the robotic arm, a head portion connected to the attachment platform at one end and configured for housing an electro-mechanical actuation assembly therein, and at least one surgical tool member extending from the head portion and operatively associated with the electro-mechanical actuation assembly for controlling the operation and movement of the at least one surgical tool member. The at least one surgical tool member may include a cutting assembly, an aortic hole punch assembly, a lasing assembly, a coring assembly, or a vascular suturing assembly.
    Type: Application
    Filed: May 21, 2004
    Publication date: December 2, 2004
    Inventors: H. Jonathan Tovey, Keith Ratcliff, Kenneth E. Toso, Peter W.J. Hinchliffe
  • Publication number: 20040242969
    Abstract: Apparatus and method for surgery is disclosed which includes a retractor having a substantially planar base defining an opening for overlying an operative site on a patient, and at least one retractor blade slidably mounted to the base. The base is positioned on the patient such that the opening therein overlies the operative site. The operative site is percutaneously accessed, and obstructing tissue is retracted by engaging the tissue with the retractor blade. A surgical instrument is provided which is engageable with the base and operable at the operative site through the opening in the base. A surgical procedure is carried out through the opening in the base with the surgical instrument.
    Type: Application
    Filed: March 26, 2004
    Publication date: December 2, 2004
    Inventors: Charles R. Sherts, David A. Nicholas, David Farascioni, Keith Ratcliff, Peter W.J. Hinchliffe, Cathy Aranvi
  • Publication number: 20040225192
    Abstract: An improved surgical dilator extractor is introduced into the abdominal cavity through a trocar cannula and expanded, forming a tissue receiving space, at the distal end. The tissue receiving space is enlarged by passing a grasper through a lumen of the dilator extractor to interact with a guide surface on the interior of dilator extractor to expand a dilator portion having a single leaf beyond the natural resiliency of the leaf. The tissue being extracted is then manipulated into the space with the grasper. The tissue is then removed from the cavity by the surgeon applying a force onto the dilator extractor that insures the elongation of the tissue and temporarily dilates the entry wound to the extent necessary for the tissue to be removed. Alternative embodiments of the surgical dilator extractor and related instrument tool sets and methods for the use thereof also are disclosed.
    Type: Application
    Filed: October 7, 2003
    Publication date: November 11, 2004
    Applicant: SURGICON, INC.
    Inventors: Wayne P. Young, John I. Shipp, Keith Ratcliff
  • Patent number: 6733445
    Abstract: Apparatus and method for surgery is disclosed which includes a retractor having a substantially planar base defining an opening for overlying an operative site on a patient, and at least one retractor blade slidably mounted to the base. The base is positioned on the patient such that the opening therein overlies the operative site. The operative site is percutaneously accessed, and obstructing tissue is retracted by engaging the tissue with the retractor blade. A surgical instrument is provided which is engageable with the base and operable at the operative site through the opening in the base. A surgical procedure is carried out through the opening in the base with the surgical instrument.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: May 11, 2004
    Assignee: United States Surgical Corporation
    Inventors: Charles R. Sherts, David A. Nicholas, David Farascioni, Keith Ratcliff, Peter W. J. Hinchliffe, Cathy Aranyi
  • Publication number: 20040087977
    Abstract: Surgical instrumentation and methods for performing a bypass procedure in a digestive system incorporate laparoscopic techniques to minimize surgical trauma to the patient. The instrumentation includes an outer guide member dimensioned for insertion and passage through an esophagus of a patient and defining an opening therein extending at least along a portion of the length of the outer guide member, an elongate anvil delivery member at least partially disposed within the opening of the outer guide member and being adapted for longitudinal movement within the outer guide member between an initial position and an actuated position and an anvil operatively engageable with the delivery member. The anvil includes an anvil rod defining a longitudinal axis and an anvil head connected to the anvil rod.
    Type: Application
    Filed: August 30, 2002
    Publication date: May 6, 2004
    Applicant: United States Surgical
    Inventors: Tim Nolan, Ernie Aranyi, John Klinger, Keith Ratcliff, John Charles Robertson
  • Publication number: 20040059344
    Abstract: An endo-vascular fastener applicator is provided for endo-luminal fastening a prosthetic to a vessel with a fastener. The applicator includes a tubular body that is configured for positioning within a vessel; an expandable portion disposed adjacent distal end of the tubular body, and deployed to support a prosthetic in contact with an inner surface of a vessel; and a drive assembly for advancing a fastener into the prosthetic. The applicator may include a control assembly; and a delivery tube that is disposed for movement within the tubular body, and which defines a channel for movement of the drive assembly therewithin. The delivery tube may include an applicator head having an injection mount that is disposed for movement relative to the prosthetic. A method for endo-luminal repairing a damaged portion of a vessel is also disclosed.
    Type: Application
    Filed: July 14, 2003
    Publication date: March 25, 2004
    Applicant: United States Surgical Corporation
    Inventors: Juan Carlos Parodi, Keith Ratcliff, Frank M. Rende, Charles R. Sherts
  • Publication number: 20040050902
    Abstract: An endoscopic surgical apparatus is provided for placing lateral lines of surgical fasteners into body tissue. The apparatus includes a frame portion, an elongated portion extending from the frame portion, and an articulating fastener applying assembly associated with a distal end of the elongated portion. The fastener applying assembly includes a base portion, a staple cartridge housing, and an anvil member which has a forming surface thereon against which surgical fasteners are driven as they are ejected from the cartridge housing. A first mechanism is provided for effectuating the rotation of the fastener applying assembly about an axis defined by the body portion, a second mechanism is provided for effectuating the articulation of the fastener applying assembly, and a third mechanism is provided for independently rotating the cartridge housing and anvil member relative to a longitudinal axis defined by the base position to increase the range of operability of the apparatus.
    Type: Application
    Filed: September 22, 2003
    Publication date: March 18, 2004
    Inventors: David T. Green, Keith Ratcliff, Keith Milliman, Henry R. Sienkiewicz, Mitchell J. Palmer, Graham W. Bryan
  • Patent number: 6676685
    Abstract: An arterial closure device for use following coronary catherization procedures to close arterial access openings through the arterial wall while permitting post operative flow through the artery includes a housing having proximal and distal ends, and defining a longitudinal axis, first and second arterial tissue everting members mounted adjacent the distal end of the housing and first and second jaw members mounted adjacent the first and second tissue engaging members. The first and second arterial tissue everting members are dimensioned for at least partial positioning within the arterial access opening in the arterial wall and are deployable in at least a radial outward direction relative to the longitudinal axis of the housing to engage respective opposed arterial tissue portions on opposed sides of the opening and move the tissue arterial portions to an everted condition thereof.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: January 13, 2004
    Assignee: Tyco Healthcare Group LP
    Inventors: Roberto Pedros, Keith Ratcliff, John C. Robertson