Patents by Inventor Herbert W. Korthoff

Herbert W. Korthoff 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: 5474732
    Abstract: A method for forming a surgical clip and fixture for use therein includes molding a polymeric clip body, the clip body having hinged legs, the polymer of the clip body being substantially amorphous. The clip body can then be moved to a desired configuration while being subjected to a temperature above the glass transition temperature. The molded clip body is then heated to a temperature within the crystallization range for a period of time sufficient to impart at least 20% crystallinity thereto to impart a spring back property. Also disclosed herein is a fixture for forming a surgical clip in accordance with this method.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: December 12, 1995
    Assignee: United States Surgical Corporation
    Inventors: Herbert W. Korthoff, Daniel Shichman, Ross R. Muth, Charles E. Gorman, Jr.
  • Patent number: 5366458
    Abstract: A latchless surgical clip provides effective hemostasis while avoiding or minimizing the risk of injury to the tissue site to which the clip is applied. The clip includes a hinge region having an elastic spring back property so that the legs are spread apart to engage opposing sides of the tissue and then released to return to their tissue clamping (closed) position. A method for forming the latchless surgical clip and a fixture for use therein are also described.
    Type: Grant
    Filed: December 13, 1990
    Date of Patent: November 22, 1994
    Assignee: United States Surgical Corporation
    Inventors: Herbert W. Korthoff, Daniel Shichman, Ross R. Muth, Charles E. Gorman, Jr.
  • Patent number: 5259845
    Abstract: A combined surgical needle-suture device of controlled suture release characteristics and a method for manufacturing the device employ a shrinkable tubing to connect the needle to a suture possessing a lubricated tip.
    Type: Grant
    Filed: April 3, 1991
    Date of Patent: November 9, 1993
    Assignee: United States Surgical Corporation
    Inventor: Herbert W. Korthoff
  • Patent number: 5226912
    Abstract: A surgical needle is attached to a braided suture of particular construction to provide a combined surgical needle-braided suture device. A shrinkable tubing is employed to secure the needle to the suture. The tubing shrinks in response to the application of energy, e.g., heat. Attachment parameters may be controlled to provide standard needle attachment or removable needle attachment.
    Type: Grant
    Filed: August 21, 1990
    Date of Patent: July 13, 1993
    Assignee: United States Surgical Corporation
    Inventors: Donald S. Kaplan, Matthew E. Hermes, Ross R. Muth, Herbert W. Korthoff
  • Patent number: 5156615
    Abstract: A combined surgical needle-suture device of controlled suture release characteristics and a method for manufacturing the device employ a shrinkable tubing and a bonding agent to attach the needle to the suture.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: October 20, 1992
    Assignee: United States Surgical Corporation
    Inventors: Herbert W. Korthoff, Michael S. Kassim
  • Patent number: 5139514
    Abstract: A suture is attached to a surgical needle possessing a shank of reduced diameter the butt end of which is rounded. Attachment is accomplished by means of a shrinkable tubing which is fitted about the shank of the needle and an end of the suture, application of heat to the tubing effecting its shrinkage with consequent secure attachment of the needle to the suture. Rounding of the butt end of the needle shank minimizes the possibility that during use, the needle will protrude or rip through the tubing or otherwise compromise the security of the attachment of the needle to the suture.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: August 18, 1992
    Assignee: United States Surgical Corporation
    Inventors: Herbert W. Korthoff, Richard N. Granger
  • Patent number: 5133738
    Abstract: A surgical needle is attached to a spiroid braided suture to provide a combined surgical needle-spiroid braided suture device. A shrinkable tubing is employed to secure the needle to the suture. The tubing shrinks in response to the application of energy, e.g., heat. Attachment parameters may be controlled to provide standard needle attachment or removable needle attachment.
    Type: Grant
    Filed: August 21, 1990
    Date of Patent: July 28, 1992
    Assignee: United States Surgical Corporation
    Inventors: Herbert W. Korthoff, Michael P. Chesterfield, Ilya Koyfman, Matthew E. Hain
  • Patent number: 5122156
    Abstract: An apparatus and method is disclosed for performing circular anastomosis on body portions, such body portions preferably include at least one tubular organ such as intestines, colons, or the like. The apparatus includes an annular crown-like structure which includes a plurality of elongated sharp resilient members positioned and adapted to pierce and secure the tubular body part in position for attachment to the other body part. An anvil for providing closure in such circular anastomosis and a method of performing such circular anastomosis are also disclosed. A unique anvil for performing such procedures with staples is also disclosed.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: June 16, 1992
    Assignee: United States Surgical Corporation
    Inventors: Richard N. Granger, Herbert W. Korthoff
  • Patent number: 5089011
    Abstract: Attachment of a surgical needle to a capped suture to provide a combined surgical needle-suture device employs a shrinkable tubing a suture cutting edge. The cap on the suture possesses a suture cutting edge such that separation of the needle from the suture can be achieved when desired by bringing the suture to bear under tension against the cutting edge of the cap thereby severing the suture.
    Type: Grant
    Filed: June 21, 1990
    Date of Patent: February 18, 1992
    Assignee: United States Surgical Corporation
    Inventor: Herbert W. Korthoff
  • Patent number: 5089010
    Abstract: A combined surgical needle-suture device and a method for manufacturing the device employ a shrinkable tubing to connect the needle to a suture possessing a weakened segment. Separation of the needle from the suture is achieved by providing a weakened suture segment and applying a rupturing force to the suture within a predetermined range.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: February 18, 1992
    Assignee: United States Surgical Corporation
    Inventor: Herbert W. Korthoff
  • Patent number: 5084063
    Abstract: A combined surgical needle-suture device of controlled suture release characteristics and a method for manufacturing the device employ a shrinkable tubing and a suture having an expandable tip region to connect the needle to the suture.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: January 28, 1992
    Assignee: United States Surgical Corporation
    Inventor: Herbert W. Korthoff
  • Patent number: 5067959
    Abstract: A combined surgical needle-suture device of controlled suture release characteristics and a method for manufacturing the device employ a shrinkable tubing and a bonding agent to attach the needle to the suture.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: November 26, 1991
    Assignee: United States Surgical Corporation
    Inventor: Herbert W. Korthoff
  • Patent number: 5059212
    Abstract: A combined surgical needle-suture device of controlled suture release characteristics and a method for manufacturing the device employ a shrinkable tubing to connect the needle to the suture. The tip of the suture which is connected to the needle possesses a reduced cross section relative to the remainder of the suture, such reduced cross section being capable of rupture by applying an amount of force therto, e.g., a sharp tug, within a predetermined range thus effecting needle separation.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: October 22, 1991
    Assignee: United States Surgical Corporation
    Inventor: Herbert W. Korthoff
  • Patent number: 5051107
    Abstract: A combined surgical needle-suture device of controlled suture release characteristics and a method for manufacturing the device employ a shrinkable tubing to connect the needle to the suture. A tensioning force is applied to the device to bring the average force required for the release of the needle from its attached suture to within a predetermined range of average pull-out force.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: September 24, 1991
    Assignee: United States Surgical Corporation
    Inventor: Herbert W. Korthoff
  • Patent number: 5041128
    Abstract: Attachment of a surgical needle to a suture to provide a combined surgical needle-suture device employs a shrinkable tubing possessing a suture cutting edge. Separation of the needle from the suture can be achieved when desired by bringing the suture to bear under tension against the cutting edge of the tubing thereby severing the suture.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: August 20, 1991
    Assignee: United States Sirgical Corporation
    Inventor: Herbert W. Korthoff
  • Patent number: 4917114
    Abstract: The two-part surgical fastener is composed of an annular stapling part having projecting prongs and annular retaining board having an annular gap which receives the prongs. Barbs on the prongs serve to abutt against a retaining ring on the retaining part to maintain a fixed relationship between the parts for stapling purposes. The anvil assembly on which the retaining part of the fastener is mounted as fingers which can be collapsed radially inwardly after stapling to permit ease of removal.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: April 17, 1990
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Herbert W. Korthoff
  • Patent number: 4893622
    Abstract: The two-part surgical fastener is composed of an annular stapling part having projecting prongs and an annular retaining part having an annular gap which receives the prongs. The anvil assembly on which the retaining part of the fastener is mounted has fingers which can be collapsed radially inwardly after stapling to permit ease of removal. During stapling, the annular stapling part is driven through the tubular ends of the tissue into retained engagement with the retaining part. At the same time, the clamped ends of the tissue are cut on a circular line and, thereafter, the anvil assembly is collapsed radially inwardly to permit withdrawing of the stapling apparatus.
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: January 16, 1990
    Assignee: United States Surgical Corporation
    Inventors: David T. Green, Herbert W. Korthoff
  • Patent number: 4752024
    Abstract: The two-part surgical fastener is composed of an annular stapling part having projecting prongs and annular retaining board having an annular gap which receives the prongs. Barbs on the prongs serve to abut against a retaining ring on the retaining part to maintain a fixed relationship between the parts for stapling purposes. The anvil assembly on which the retaining part of the fastener is mounted as fingers which can be collapsed radially inwardly after stapling to permit ease of removal.
    Type: Grant
    Filed: October 17, 1986
    Date of Patent: June 21, 1988
    Inventors: David T. Green, Herbert W. Korthoff
  • Patent number: 4667674
    Abstract: A surgical fastener comprising a fastener member and a retainer member is disclosed. The fastener provides improved hemostasis and, desirably, is of a resinous material that is absorbable in the body. The fastener member has prongs which extend substantially perpendicularly from a base to interlock with apertures in the retainer member. The base and the retainer member are substantially equal in length, and each prong extends from a point on the base spaced inward from its respective end of the base. The fasteners are preferably applied by apparatus including a pusher associated with each fastener member and having a particular structural relationship to the associated fastener member.
    Type: Grant
    Filed: June 5, 1985
    Date of Patent: May 26, 1987
    Assignee: United States Surgical Corporation
    Inventors: Herbert W. Korthoff, David T. Green
  • Patent number: D286441
    Type: Grant
    Filed: October 16, 1984
    Date of Patent: October 28, 1986
    Assignee: United States Surgical Corporation
    Inventors: Herbert W. Korthoff, David T. Green