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).

  • Patent number: 5549617
    Abstract: A method and apparatus for elevating, approximating and/or restraining internal organs or structures, and more particularly for treating female urinary stress incontinence are provided. The apparatus include an anchoring device having an elongated suture with an anchor at each end thereof and a cinching member therebetween for adjusting the operative length of the suture, an articulating apparatus for applying the anchoring device during an endoscopic or laparoscopic procedure, and an apparatus for drawing the suture relative to the cinching member after it has been emplaced.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: August 27, 1996
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Henry R. Sienkiewicz, Keith Ratcliff, Salvatore Castro, Scott E. Manzo
  • Patent number: 5509596
    Abstract: A surgical stapling or fastening instrument for applying surgical fasteners to tissue having an adjustable closure mechanism to linearly approximate the distance between the jaw members of the instrument. The adjustable closure mechanism consists of an advancing mechanism and a retaining mechanism which is actuable to urge the jaw members towards each other. A coupling arrangement is also provided which permits firing of the staples or fasteners only when the jaw members are approximated a predetermined distance from each other.
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: April 23, 1996
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Henry Bolanos, Keith Ratcliff, Lisa W. Heaton, Frank J. Viola
  • Patent number: 5507754
    Abstract: A method and apparatus for elevating, approximating and/or restraining internal organs or structures, and more particularly for treating female urinary stress incontinence is provided. The invention includes an anchoring device having an elongated suture with an anchor at each end thereof and a cinching member therebetween for adjusting the length of the suture, an apparatus for applying the anchoring device, and an apparatus for drawing the suture relative to the cinching member after it has been emplaced. The method involves securing a first anchor to a first structure, such as the vaginal wall, securing a second anchor to a second structure, such as Cooper's ligament, and drawing the suture relative to the cinching member to approximate the first and second anchors, and thereby move the first structure and the second structure into juxtaposition so as to approximate them.
    Type: Grant
    Filed: August 20, 1993
    Date of Patent: April 16, 1996
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Henry R. Sienkiewicz, Keith Ratcliff, Salvatore Castro, Scott E. Manzo
  • Patent number: 5482197
    Abstract: A self contained gas powered 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 cartridge assembly mounted to a distal end of the elongated portion. An anvil member is operatively associated with the articulating cartridge assembly and has a forming surface thereon against which surgical fasteners are driven as they are ejected from the cartridge assembly. A collar which is provided in the elongated portion translates longitudinally to draw a cable which operates to move the anvil member relative to the cartridge assembly, thereby clamping body tissue to be fastened. A self contained pneumatic system is associated with the frame portion and is actuable to eject the surgical fasteners from the cartridge assembly.
    Type: Grant
    Filed: May 17, 1994
    Date of Patent: January 9, 1996
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Keith Ratcliff, Keith L. Milliman, Henry R. Sienkiewicz, Mitchell J. Palmer
  • Patent number: 5476206
    Abstract: A surgical stapler for placing lateral lines of staples and making an incision, all through an endoscopic tube, includes an anvil member which is mounted to the distal end of an elongated housing. A tubular collar disposed around the arm of the anvil member is movable to a distal position to bias the anvil member and a cartridge assembly into cooperative alignment, thereby clamping body tissue to be fastened between the anvil member and cartridge assembly.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: December 19, 1995
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Henry Bolanos, Daniel E. Alesi, Keith Ratcliff, Charles R. Sherts
  • Patent number: 5456401
    Abstract: A self contained gas powered 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 cartridge assembly mounted to a distal end of the elongated portion. An anvil member is operatively associated with the articulating cartridge assembly and has a forming surface thereon against which surgical fasteners are driven as they are ejected from the cartridge assembly. A collar which is provided in the elongated portion translates longitudinally to draw a cable which operates to move the anvil member relative to the cartridge assembly, thereby clamping body tissue to be fastened. A self contained pneumatic system is associated with the frame portion and is actuable to eject the surgical fasteners from the cartridge assembly.
    Type: Grant
    Filed: April 21, 1994
    Date of Patent: October 10, 1995
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Keith Ratcliff, Keith L. Milliman, Henry R. Sienkiewicz, Mitchell J. Palmer
  • Patent number: 5431322
    Abstract: A self contained gas powered endoscopic surgical apparatus is provided for placing lateral lines of surgical fasteners into body tissue. The apparatus includes an anvil member and a surgical fastener cartridge member mounted to the distal end of an elongated endoscopic portion. A tubular collar of the endoscopic portion moves distally to engage the anvil member and bias the anvil member and the cartridge member into cooperative alignment, thereby clamping body tissue to be fastened between the anvil member and the cartridge member. A self contained pneumatic system is disposed in the surgical apparatus and is actuable to eject and/or form the surgical fasteners in the clamped body tissue. The apparatus further comprises a locking mechanism for preventing firing of the instrument after it has been fired a predetermined number of times. A counter for displaying the number of times the apparatus has been fired may be provided.
    Type: Grant
    Filed: November 2, 1993
    Date of Patent: July 11, 1995
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Henry Bolanos, Keith Ratcliff, Jeffrey J. Blewett, Randolph F. Lehn, Charles R. Sherts, Graham W. Bryan, Salvatore Castro, Gary S. Kappel
  • Patent number: 5425745
    Abstract: A surgical stapler for placing lateral lines of staples and making an incision, all through an endoscopic tube, includes an anvil member which is mounted to the distal end of an elongated housing. A tubular collar disposed around the arm of the anvil member is movable to a distal position to bias the anvil member and a cartridge assembly into cooperative alignment, thereby clamping body tissue to be fastened between the anvil member and cartridge assembly.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: June 20, 1995
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Henry Bolanos, Daniel E. Alesi, Keith Ratcliff, Charles R. Sherts
  • Patent number: 5413268
    Abstract: A surgical stapler for placing lateral lines of staples and making an incision, all through an endoscopic tube, includes an anvil member which is mounted to the distal end of an elongated housing. A tubular collar disposed around the arm of the anvil member is movable to a distal position to bias the anvil member and a cartridge assembly into cooperative alignment, thereby clamping body tissue to be fastened between the anvil member and cartridge assembly.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: May 9, 1995
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Henry Bolanos, Daniel E. Alesi, Keith Ratcliff, Charles R. Sherts
  • Patent number: 5392979
    Abstract: The end-to-end anastomosis apparatus is provided with a mounting means which can receive a trocar for making holes in tissue and, subsequently, an anvil shaft for the mounting of an anvil assembly for stapling purposes. The anvil shaft is provided with splines which cooperate with splines on a shell liner within the housing of the apparatus to align the buckets on the anvil assembly with the staples in a cartridge secured in the apparatus. In addition, the anvil assembly is provided with a spring for locking of the anvil housing on the anvil shaft.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: February 28, 1995
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Henry Bolanos, Keith Ratcliff
  • Patent number: 5383881
    Abstract: A safety device is provided for use with endoscopic instrumentation, particularly and endoscopic clip applier. The device includes a collar which is adapted to be disposed on the elongated shaft of the endoscopic instrument. A release means is provided as part of the trocar guide sleeve which is adapted to contact the collar and release it from engagement with the elongated shaft.
    Type: Grant
    Filed: September 22, 1993
    Date of Patent: January 24, 1995
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Henry Bolanos, Wayne P. Young, Richard A. McGarry, Lisa W. Heaton, Keith Ratcliff
  • Patent number: 5358506
    Abstract: Approximating apparatus for surgical jaw structure is provided which effects substantially parallel approximation of first and second surgical jaw structure to permit substantially parallel working interaction therebetween. The approximating apparatus includes camming structure for engaging at least one movable jaw of the surgical jaw structure to bias that jaw toward or away from a second jaw structure in a substantially parallel manner. A tissue stop may be provided to more easily guide and protect tissue captured by the jaw structure.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: October 25, 1994
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Henry Bolanos, Jeffrey J. Blewett, Keith Ratcliff, Frank J. Viola, Charles R. Sherts
  • Patent number: 5336232
    Abstract: Approximating apparatus for surgical jaw structure is provided which effects substantially parallel approximation of first and second surgical jaw structure to permit substantially parallel working interaction therebetween. The approximating apparatus includes camming structure for engaging at least one movable jaw of the surgical jaw structure to bias that jaw toward or away from a second jaw structure in a substantially parallel manner.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: August 9, 1994
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Henry Bolanos, Jeffrey J. Blewett, Keith Ratcliff, Frank J. Viola, Charles R. Sherts
  • Patent number: 5326013
    Abstract: A self contained gas powered 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 cartridge assembly mounted to a distal end of the elongated portion. An anvil member is operatively associated with the articulating cartridge assembly and has a forming surface thereon against which surgical fasteners are driven as they are ejected from the cartridge assembly. A collar which is provided in the elongated portion translates longitudinally to draw a cable which operates to move the anvil member relative to the cartridge assembly, thereby clamping body tissue to be fastened. A self contained pneumatic system is associated with the frame portion and is actuable to eject the surgical fasteners from the cartridge assembly.
    Type: Grant
    Filed: September 23, 1992
    Date of Patent: July 5, 1994
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Keith Ratcliff, Keith L. Milliman, Henry R. Sienkiewicz, Mitchell J. Palmer
  • Patent number: 5318221
    Abstract: A surgical stapler for placing lateral lines of staples and making an incision, all through an endoscopic tube, includes an anvil member which is mounted to the distal end of an elongated housing. A tubular collar disposed around the arm of the anvil member is movable to a distal position to bias the anvil member and a cartridge assembly into cooperative alignment, thereby clamping body tissue to be fastened between the anvil member and cartridge assembly.
    Type: Grant
    Filed: September 10, 1992
    Date of Patent: June 7, 1994
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Henry Bolanos, Daniel E. Alesi, Keith Ratcliff, Charles R. Sherts
  • Patent number: 5285944
    Abstract: The end-to-end anastomosis apparatus is provided with a mounting means which can receive a trocar for making holes in tissue and, subsequently, an anvil shaft for the mounting of an anvil assembly for stapling purposes. The anvil shaft is provided with splines which cooperate with splines on a shell liner within the housing of the apparatus to align the buckets on the anvil assembly with the staples in a cartridge secured in the apparatus. In addition, the anvil assembly is provided with a spring for locking of the anvil housing on the anvil shaft.
    Type: Grant
    Filed: December 6, 1990
    Date of Patent: February 15, 1994
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Henry Bolanos, Keith Ratcliff
  • Patent number: 5158222
    Abstract: The end-to-end anastomosis apparatus is provided with a mounting means which can receive a trocar for making holes in tissue and, subsequently, an anvil shaft for the mounting of an anvil assembly for stapling purposes. The anvil shaft is provided with splines which cooperate with splines on a shell liner within the housing of the apparatus to align the buckets on the anvil assembly with the staples in a cartridge secured in the apparatus. In addition, the anvil assembly is provided with a spring for locking of the anvil housing on the anvil shaft.
    Type: Grant
    Filed: May 17, 1991
    Date of Patent: October 27, 1992
    Assignee: United States Surgical Corp.
    Inventors: David T. Green, Keith Ratcliff, Henry Bolanos
  • Patent number: 5119983
    Abstract: The end-to-end anastomosis apparatus is provided with a mounting means which can receive a trocar for making holes in tissue and, subsequently, an anvil shaft for the mounting of an anvil assembly for stapling purposes. The anvil shaft is provided with splines which cooperate with splines on a shell liner within the housing of the apparatus to align the buckets on the anvil assembly with the staples in a cartridge secured in the apparatus. In addition, the anvil assembly is provided with a spring for locking of the anvil housing on the anvil shaft.
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: June 9, 1992
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Keith Ratcliff
  • Patent number: 5100420
    Abstract: An apparatus for applying surgical clips through an endoscopic tube includes an endoscopic portion housing a jaw blade, a pusher bar for feeding clips one at a time to the jaws, a channel bar for camming the jaw blades into closed position, and an array of surgical clips. The body of the apparatus comprises a frame housing an actuating mechanism and a transmission mechanism for transferrring movement to the pusher bar and channel. The endoscopic portion is rotatable relative to the frame. In one embodiment the apparatus is single disposable unit. In an alternative embodiment the endoscopic portion is detachable and disposable whereas the non-endoscopic body portion is reusable.
    Type: Grant
    Filed: July 18, 1989
    Date of Patent: March 31, 1992
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Henry Bolanos, Wayne P. Young, Richard A. McGarry, Lisa W. Heaton, Keith Ratcliff
  • Patent number: 5084057
    Abstract: A disposable apparatus is disclosed for applying surgical clips to body tissue in endoscopic surgical procedures. The apparatus includes a frame which is adapted to be gripped by hand, and an endoscopic section permanently connected to the handle and capable of storing surgical clips in preparation for clipping arteries or other body tissue. The apparatus includes means for advancing each clip sequentially to a pair of distal jaws and means for closing the jaws about the clip. When the jaws are closed, the clip advancing means is simultaneously positioned to advance the next clip. When all clips are spent the apparatus becomes automatically locked against further advancement of the clip advancing means as well as further closing of the clip closing jaws. The present apparatus also makes it possible to partially close a clip without interfering with the sequential movement of the clip advancing mechanism.
    Type: Grant
    Filed: May 30, 1990
    Date of Patent: January 28, 1992
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Henry Bolanos, Wayne P. Young, Richard A. McGarry, Lisa W. Heaton, Keith Ratcliff