Patents by Inventor Kenneth S. Wales

Kenneth S. Wales 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: 5826776
    Abstract: A surgical instrument for performing endoscopic surgical procedures. In one embodiment, the instrument includes a knife that remains unexposed until initiation of a cutting sequence, and returns to an unexposed position at the conclusion of the cutting sequence, minimizing the risk of injury to the person handling the instrument. In another embodiment, the instrument includes a flexible neck for articulating a surgical head assembly with respect to the shaft of the instrument. In another embodiment, a device for locking the articulated head at an angle of articulation is provided. In yet another embodiment, a mechanism for opening and closing an anvil assembly is disclosed.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: October 27, 1998
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Dale R. Schulze, Joseph Paraschac, William D. Fox, Michael E. Setser, Kenneth S. Wales, Mark S. Zeiner
  • Patent number: 5800449
    Abstract: A surgical instrument according to the present invention includes a handle, an elongated closure tube, an end effector, a pair of wireform elements which may be, for example, wireform conductors, extending through the elongated tube from the handle to the end effector and a knife blade at the end effector and a tissue stop adapted to shield the knife blade when the knife blade is in its proximal most position. In a surgical instrument according to the present invention, the wireform elements are positioned within wireform guide channels formed in the tissue stop. In a surgical instrument according to the present invention, the closure tube includes a tissue stop including a distal end and a proximal end. The tissue stop further includes a body, a neck a knife housing and knife channel, the knife channel being adapted to support the shank of the knife as it moves within the knife channel.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: September 1, 1998
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventor: Kenneth S. Wales
  • Patent number: 5797938
    Abstract: An electrosurgical hemostatic instrument including a curved end effector. A preferred embodiment of the invention provides a bipolar endoscopic clamping, coagulation and cutting device. In this device, a substantially straight, axially flexible knife is used to cut tissue grasped by the jaws of the end effector. The end effector includes a knife channel which is wider than the knife. The knife may include sacrificial contact points adapted to contact the walls of the knife channel as the knife moves through the channel, protecting the cutting edges of the knife blade from damage.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: August 25, 1998
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Joseph F. Paraschac, Kenneth S. Wales, Rudolph H. Nobis, Kip Rupp
  • Patent number: 5730740
    Abstract: A surgical instrument including a handle and a trigger is designed to be closed and latched by the operator, and includes a latch mechanism. The latch mechanism includes a latch on the grip, a latch knob including a latching notch on the trigger and a latch guide on the trigger to guide the latch hook into the latching notch.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: March 24, 1998
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Kenneth S. Wales, Charles A. Hansford, J. David Hughett
  • Patent number: 5702408
    Abstract: A four-bar linkage for an articulation assembly adapted for use with a surgical instrument is disclosed. The first link is in the form of an actuation lever which pivots transversely to the longitudinal axis of the instrument. The second and third links are operatively connected to the first link. The fourth link is in the form of an end effector for the instrument, and it is rotatably attached to the second and third links for movement transverse to the longitudinal axis. When the first link is pivotally rotated, a driver assembly causes the second and third links to move in tandem generally parallel to the longitudinal axis of the instrument in opposite directions. Consequently, the end effector rotates in the same direction as that of the actuation lever from an unarticulated position to an articulated position. The four-bar linkage is simple and efficient, and eliminates the need for a conventional central pivot for the articulation joint.
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: December 30, 1997
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Kenneth S. Wales, Joseph F. Paraschac, David Stefanchik
  • Patent number: 5692668
    Abstract: A surgical instrument for performing endoscopic surgical procedures. In one embodiment, the instrument includes a knife that remains unexposed until initiation of a cutting sequence, and returns to an unexposed position at the conclusion of the cutting sequence, minimizing the risk of injury to the person handling the instrument. In another embodiment, the instrument includes a flexible neck for articulating a surgical head assembly with respect to the shaft of the instrument. In another embodiment, a device for locking the articulated head at an angle of articulation is provided. In yet another embodiment, a mechanism for opening and closing an anvil assembly is disclosed.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: December 2, 1997
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Dale R. Schulze, Joseph Paraschac, William D. Fox, Michael E. Setser, Kenneth S. Wales, Mark S. Zeiner
  • Patent number: 5680982
    Abstract: A surgical instrument for performing endoscopic surgical procedures. In one embodiment, the instrument includes a knife that remains unexposed until initiation of a cutting sequence, and returns to an unexposed position at the conclusion of the cutting sequence, minimizing the risk of injury to the person handling the instrument. In another embodiment, the instrument includes a flexible neck for articulating a surgical head assembly with respect to the shaft of the instrument. In another embodiment, a device for locking the articulated head at an angle of articulation is provided. In yet another embodiment, a mechanism for opening and closing an anvil assembly is disclosed.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: October 28, 1997
    Assignee: Ethicon ENdo-Surgery, Inc.
    Inventors: Dale R. Schulze, Joseph Paraschac, William D. Fox, Michael E. Setser, Kenneth S. Wales, Mark S. Zeiner
  • Patent number: 5673841
    Abstract: A surgical instrument for performing endoscopic surgical procedures. In one embodiment, the instrument includes a knife that remains unexposed until initiation of a cutting sequence, and returns to an unexposed position at the conclusion of the cutting sequence, minimizing the risk of injury to the person handling the instrument. In another embodiment, the instrument includes a flexible neck for articulating a surgical head assembly with respect to the shaft of the instrument. In another embodiment, a device for locking the articulated head at an angle of articulation is provided. In yet another embodiment, a mechanism for opening and closing an anvil assembly is disclosed.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: October 7, 1997
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Dale R. Schulze, Joseph Paraschac, William D. Fox, Michael E. Setser, Kenneth S. Wales, Mark S. Zeiner
  • Patent number: 5673840
    Abstract: A surgical instrument for performing endoscopic surgical procedures. In one embodiment, the instrument includes a knife that remains unexposed until initiation of a cutting sequence, and returns to an unexposed position at the conclusion of the cutting sequence, minimizing the risk of injury to the person handling the instrument. In another embodiment, the instrument includes a flexible neck for articulating a surgical head assembly with respect to the shaft of the instrument. In another embodiment, a device for locking the articulated head at an angle of articulation is provided. In yet another embodiment, a mechanism for opening and closing an anvil assembly is disclosed.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: October 7, 1997
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Dale R. Schulze, Joseph Paraschac, William D. Fox, Michael E. Setser, Kenneth S. Wales, Mark S. Zeiner
  • Patent number: 5669544
    Abstract: A surgical instrument for performing endoscopic surgical procedures. In one embodiment, the instrument includes a knife that remains unexposed until initiation of a cutting sequence, and returns to an unexposed position at the conclusion of the cutting sequence, minimizing the risk of injury to the person handling the instrument. In another embodiment, the instrument includes a flexible neck for articulating a surgical head assembly with respect to the shaft of the instrument. In another embodiment, a device for locking the articulated head at an angle of articulation is provided. In yet another embodiment, a mechanism for opening and closing an anvil assembly is disclosed.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: September 23, 1997
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Dale R. Schulze, Joseph Paraschac, William D. Fox, Michael E. Setser, Kenneth S. Wales, Mark S. Zeiner
  • Patent number: 5632432
    Abstract: A surgical instrument for performing endoscopic surgical procedures. In one embodiment, the instrument includes a knife that remains unexposed until initiation of a cutting sequence, and returns to an unexposed position at the conclusion of the cutting sequence, minimizing the risk of injury to the person handling the instrument. In another embodiment, the instrument includes a flexible neck for articulating a surgical head assembly with respect to the shaft of the instrument. In another embodiment, a device for locking the articulated head at an angle of articulation is provided. In yet another embodiment, a mechanism for opening and closing an anvil assembly is disclosed.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: May 27, 1997
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Dale R. Schulze, Joseph Paraschac, William D. Fox, Michael E. Setser, Kenneth S. Wales, Mark S. Zeiner
  • Patent number: 5562700
    Abstract: A jaw assembly is provided with a pair of jaws which are closed with a flexible, tension member that is pulled by the operator of the instrument. In a preferred embodiment, one of the jaws is pivotally mounted in a slot to the other jaw. A cord, having a loop configuration, is attached to the pivoting jaw and can be pulled to pivot the jaw closed. A second cord can be provided to initially hold the proximal end of the pivoting jaw away from the other jaw until the distal ends of the jaws are closer together. In another embodiment, jaws can be closed in a parallel orientation by rotating two pulleys with threaded shafts engaged with the jaws.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: October 8, 1996
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Thomas W. Huitema, Warren P. Williamson, Matthew Otten, Kenneth S. Wales, Mark Fogelberg, James H. Chambers
  • Patent number: 5562702
    Abstract: A jaw assembly is provided with a pair of jaws which are closed with a flexible, tension member that is pulled by the operator of the instrument. In a preferred embodiment, one of the jaws is pivotally mounted in a slot to the other jaw. A cord, having a loop configuration, is attached to the pivoting jaw and can be pulled to pivot the jaw closed. A second cord can be provided to initially hold the proximal end of the pivoting jaw away from the other jaw until the distal ends of the jaws are closer together. In another embodiment, jaws can be closed in a parallel orientation by rotating two pulleys with threaded shafts engaged with the jaws.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: October 8, 1996
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Thomas W. Huitema, Warren P. Williamson, Matthew Otten, Kenneth S. Wales, Mark Fogelberg, James H. Chambers
  • Patent number: 5562701
    Abstract: A jaw assembly is provided with a pair of jaws which are closed with a flexible, tension member that is pulled by the operator of the instrument. In a preferred embodiment, one of the jaws is pivotally mounted in a slot to the other jaw. A cord, having a loop configuration, is attached to the pivoting jaw and can be pulled to pivot the jaw closed. A second cord can be provided to initially hold the proximal end of the pivoting jaw away from the other jaw until the distal ends of the jaws are closer together. In another embodiment, jaws can be closed in a parallel orientation by rotating two pulleys with threaded shafts engaged with the jaws.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: October 8, 1996
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Thomas W. Huitema, Warren P. Williamson, Matthew Otten, Kenneth S. Wales, Mark Fogelberg, James H. Chambers
  • Patent number: 5507773
    Abstract: A jaw assembly is provided with a pair of jaws which are closed with a flexible, tension member that is pulled by the operator of the instrument. In a preferred embodiment, one of the jaws is pivotally mounted in a slot to the other jaw. A cord, having a loop configuration, is attached to the pivoting jaw and can be pulled to pivot the jaw closed. A second cord can be provided to initially hold the proximal end of the pivoting jaw away from the other jaw until the distal ends of the jaws are closer together. In another embodiment, jaws can be closed in a parallel orientation by rotating two pulleys with threaded shafts engaged with the jaws.
    Type: Grant
    Filed: February 18, 1994
    Date of Patent: April 16, 1996
    Assignee: Ethicon Endo-Surgery
    Inventors: Thomas W. Huitema, Warren P. Williamson, Matthew Otten, Kenneth S. Wales, Mark Fogelberg, James H. Chambers
  • Patent number: 5409498
    Abstract: A new and improved endoscopic surgical instrument. The business head of the instrument is rotatable about its longitudinal axis and is also articulatable in and out of longitudinal alignment with the longitudinal axis of the instrument.
    Type: Grant
    Filed: November 5, 1992
    Date of Patent: April 25, 1995
    Assignee: Ethicon, Inc.
    Inventors: Charles K. Braddock, Thomas W. Huitema, David Stefanchik, Kenneth S. Wales