Patents Assigned to NuSurg Medical, Inc.
  • Patent number: 5628760
    Abstract: A laparoscopic hook knife for use in surgical procedures includes an elongate shaft having a pistol grip handle at its proximal end and a blade support with a hook-shaped member at the distal end. The hook-shaped member has a blunt distal tip which is formed in the shape of a spade contained in a plane generally perpendicular to the plane containing the attached blade. An outlet is provided at the proximal end of the instrument for attaching a source of unipolar electric current for the purposes of creating hemostasis along the cutting path in the tissue. The shaft and blade support, except for the spade tip and at least one contact point between the blade and the blade support, are coated with an electrically insulating material to prevent any undesirable conduction of electricity. A second embodiment includes a blade member having an outer, straight cutting edge and an inner, curved cutting edge.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: May 13, 1997
    Assignee: NuSurg Medical, Inc.
    Inventor: Dennis J. Knoepfler
  • Patent number: 5454819
    Abstract: A surgical needle holder particularly adapted for use in laparoscopic procedures include a first and a second jaw element which have parallel engaging jaw faces. The first jaw element is stationary relative to the needle holder and the second jaw element is moveable. A rod extends from the moveable jaw element through the body of the needle holder and is spring biased forcing the moveable jaw element into engagement with the stationary jaw element. The jaw elements are opened by the handle which includes a generally V-shaped linkage between two handle members. When the handle members are squeezed together, the linkage is compressed and forced against the spring elements forcing it into compression and opening the jaw elements. Preferably the faces of the jaw elements are at a 30.degree. angle relative to the axis. This allows a needle to be held in the jaws and inserted through the cannula in a laparoscopic procedure.
    Type: Grant
    Filed: March 17, 1994
    Date of Patent: October 3, 1995
    Assignee: NuSurg Medical, Inc.
    Inventor: Dennis J. Knoepfler
  • Patent number: 5397333
    Abstract: A laparoscopic hook knife for use in surgical procedures includes an elongate shaft having a pistol grip handle at its proximal end and a blade support with a hook-shaped member at the distal end. The hook-shaped member has a blunt distal tip which is formed in the shape of a spade contained in a plane generally perpendicular to the plane containing the attached blade. An outlet is provided at the proximal end of the instrument for attaching a source of unipolar electric current for the purposes of creating hemostasis along the cutting path in the tissue. The shaft and blade support, except for the spade tip and at least one contact point between the blade and the blade support, are coated with an electrically insulating material to prevent any undesirable conduction of electricity. A second embodiment includes a blade member having an outer, straight cutting edge and an inner, curved cutting edge.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: March 14, 1995
    Assignee: NuSurg Medical, Inc.
    Inventor: Dennis J. Knoepfler