Patents by Inventor Stephan A. DeFonzo

Stephan A. DeFonzo 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: 5913870
    Abstract: A method for percutaneous dissection of a segment of vascular tissue from a patient is provided which includes providing an elongated tubular member having a proximal end and a distal end, and blunt dissection structure positioned adjacent the distal end of the tubular member and remotely actuable from adjacent the proximal end of the tubular member. The method further provides for percutaneously accessing a first end portion of the vascular tissue segment, the blunt dissection structure is positioned adjacent the vascular tissue segment and is actuated to bluntly dissect the vascular tissue segment from surrounding body tissue.
    Type: Grant
    Filed: August 13, 1996
    Date of Patent: June 22, 1999
    Assignee: United States Surgical Corporation
    Inventors: Stephan A. DeFonzo, H. Jonathan Tovey, Keith Ratcliff, Salvatore Castro, Gerald Castellano
  • Patent number: 5782753
    Abstract: A surgical retractor comprising a base adapted to lie on the patient's skin, a handle slidably mounted with respect to the base, a tissue retracting blade extending from the handle, and a locking member movable from at least a first position to a second position to retain the tissue retracting blade in a selected position. A method for accessing the saphenous vein to facilitate harvesting the vein is also disclosed comprising the steps of making a small incision in the leg of a patient, positioning a retractor on a patient's leg such that a retractor blade extends into the incision and a base lies on the surface of the patient's leg and pulling the retractor blade away from the patient to lift the tissue away from the underlying saphenous vein.
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: July 21, 1998
    Assignee: United States Surgical Corporation
    Inventors: Stephan A. DeFonzo, David M. Farascioni, Corbett W. Stone
  • Patent number: 5680981
    Abstract: A self-contained powered surgical stapling apparatus is provided which includes an elongate body, a fastener applying assembly including an anvil for forming a surgical fastener driven thereagainst, a motor assembly and power source for energizing the motor assembly disposed within the elongate body, and a pusher driven by the motor assembly for driving a surgical fastener toward the anvil to be formed thereby and fastened to body tissue. The apparatus is configured for utilization during conventional invasive surgical procedures as well as endoscopic or laparoscopic surgical procedures by providing a detachable extension shaft.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: October 28, 1997
    Assignee: United States Surgical Corporation
    Inventors: Carlo A. Mililli, Wayne P. Young, Stephan A. DeFonzo, Dominick L. Mastri, Henry Bolanos, Leonard Stern
  • Patent number: 5628446
    Abstract: A self-contained powered surgical apparatus is provided which includes an elongate body defining a longitudinal axis and housing a plurality of surgical fasteners disposed within a feed track, an anvil positioned at a distal end of the elongate body adjacent a terminal end of the feed path for forming surgical fasteners, a fastener pusher mounted for longitudinal movement within the elongate body to individually urge surgical fasteners toward the anvil, a barrel cam assembly disposed within the elongate body for effectuating reciprocatory longitudinal movement of the fastener pusher, a motor assembly disposed within the elongate body for driving the barrel cam assembly, and a power source disposed within the elongate body for energizing the motor assembly.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: May 13, 1997
    Assignee: United States Surgical Corporation
    Inventors: Robert J. Geiste, Stephan A. DeFonzo, Dominick L. Mastri, Wayne P. Young, Carlo A. Mililli
  • Patent number: 5560532
    Abstract: Apparatus is disclosed for applying at least one surgical fastener to body tissue, having a frame and a tubular member connected to the frame and extending distally therefrom. The tubular member has a generally longitudinal axis, a proximal end portion, and a distal end portion. At least one surgical fastener is supported by the tubular member, and a mechanism is provided for advancing the at least one surgical fastener distally for positioning adjacent the body tissue. An articulating structure is included for pivotally rotating the distal end portion to predetermined angles with respect to the generally longitudinal axis, where the articulating structure includes a rotatable mechanism rotatable about an axis generally transverse to the longitudinal axis.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: October 1, 1996
    Assignee: United States Surgical Corporation
    Inventors: Stephan A. DeFonzo, Samson L. Pennatto, Andrew Komlosi
  • Patent number: 5497933
    Abstract: An apparatus is disclosed for endoscopic application of surgical staples to body tissue in laparoscopic hernia surgery, preferably with surgical mesh. The apparatus includes a staple storage cartridge supported on a pivotal support system at the distal end of the endoscopic section. An elongated pusher system extends from the frame to the endoscopic section and individually advances the staples distally. A pair of legs project distally from the pusher plate to engage the staple during closure to prevent unwanted roll or deformation of the staple. A trigger system actuates the pusher. An anvil structure having rounded anvil legs to match the configuration of the staples provides for individually closing each staple to encompass at least a portion of the surgical mesh and to penetrate the body tissue to attach the portion of the mesh to the body tissue. The staple storage cartridge may be pivoted with respect to the longitudinal axis of the endoscopic section from 0.degree. to about 20.degree., 45.degree.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: March 12, 1996
    Assignee: United States Surgical Corporation
    Inventors: Stephan A. DeFonzo, Wayne P. Young, Samson L. Pennatto, Andrew Komlosi
  • Patent number: 5462555
    Abstract: An umbilical cord clip and applicator is disclosed for clamping a maternal side of an umbilical cord, applying an umbilical cord clip to a fetal side of the umbilical cord and severing the cord intermediate the clamped maternal and fetal sides of the umbilical cord. The applicator includes a first arm having a first clamping surface, a second arm movably affixed to the first arm and having a second clamping surface and structure associated with at least one the first and second arms for mounting an umbilical cord clip thereon. The applicator also includes a recessed severing mechanism operatively associated with the first and second arms and disposed intermediate the first and second clamping surfaces and the mounting structure. The severing mechanism is automatically actuable upon closure of the first and second arms about an umbilical cord to sever the cord at a location between the first and second clamping surfaces and the clip.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: October 31, 1995
    Assignee: United States Surgical Corporation
    Inventors: Henry Bolanos, Ghaleb A. Sater, Stephan A. DeFonzo, Wayne P. Young
  • Patent number: 5364002
    Abstract: An apparatus is disclosed for endoscopic application of surgical staples adapted to attach surgical mesh to body tissue in laparoscopic hernia surgery. The apparatus includes a frame, and a generally elongated endoscopic section connected to the frame and extending distally therefrom. A staple storage cartridge is removably supported on a pivotal support system at the distal end portion of the endoscopic section with each staple being configured and adapted to attach the mesh to the body tissue. An elongated pusher system formed of several assembled components and extending from the frame to the endoscopic section is provided for individually advancing at least one staple at a time distally for positioning adjacent the surgical mesh and the body tissue. The pusher system also includes a trigger system to actuate the pusher.
    Type: Grant
    Filed: March 31, 1992
    Date of Patent: November 15, 1994
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Henry Bolanos, Wayne Young, Stephan A. DeFonzo, Richard A. McGarry, Dominick L. Mastri
  • Patent number: 5356064
    Abstract: An apparatus is disclosed for endoscopic application of surgical staples adapted to attach surgical mesh to body tissue in laparoscopic hernia surgery. The apparatus includes a frame, and a generally elongated endoscopic section connected to the frame and extending distally therefrom. A staple storage cartridge is removably supported on a pivotal support system at the distal end portion of the endoscopic section with each staple being configured and adapted to attach the mesh to the body tissue. An elongated pusher system formed of several assembled components and extending from the frame to the endoscopic section is provided for individually advancing at least one staple at a time distally for positioning adjacent the surgical mesh and the body tissue. The pusher system also includes a trigger system to actuate the pusher.
    Type: Grant
    Filed: September 23, 1992
    Date of Patent: October 18, 1994
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Wayne Young, Stephan A. DeFonzo, Samson Pennatto
  • Patent number: D374285
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: October 1, 1996
    Assignee: United States Surgical Corporation
    Inventors: Stephan A. DeFonzo, Francis D. Colligan, Ronald H. Belcourt, Jr., Dragomir C. Marinkovich
  • Patent number: D403066
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: December 22, 1998
    Assignee: United States Surgical Corporation
    Inventor: Stephan A. DeFonzo