Patents by Inventor Donald B. Williams

Donald B. Williams 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).

  • Publication number: 20030191494
    Abstract: The present invention provides a surgical device having a tissue engaging portion, a shaft member, and a handle assembly. The tissue engaging portion includes first and second opposed jaws for grasping, securing, and occluding body tissue and conduits. The shaft member is operatively coupled to the tissue engaging portion and is capable of being placed in different curvatures. The handle assembly is operatively coupled to both the shaft member and to the tissue engaging portion. The shaft member of the present invention allows the surgeon to bend and adjust the shape of the surgical device to minimize its intrusion and to allow for proper positioning in predetermined body locations. In a preferred embodiment, a portion of the device is disposable.
    Type: Application
    Filed: April 11, 2003
    Publication date: October 9, 2003
    Applicant: Allegiance Healthcare Corporation
    Inventors: Joel Donald Gray, Donald B. Williams, Thomas J. Block, Delos M. Cosgrove
  • Patent number: 6139563
    Abstract: The present invention provides a surgical device having a tissue engaging portion, a shaft member, and a handle assembly. The tissue engaging portion includes first and second opposed jaws for grasping, securing, and occluding body tissue and conduits. The shaft member is operatively coupled to the tissue engaging portion and is capable of being placed in different curvatures. The handle assembly is operatively coupled to both the shaft member and to the tissue engaging portion. The shaft member of the present invention allows the surgeon to bend and adjust the shape of the surgical device to minimize its intrusion and to allow for proper positioning in predetermined body locations. In a preferred embodiment, a portion of the device is disposable.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: October 31, 2000
    Assignee: Allegiance Corporation
    Inventors: Delos M. Cosgrove, III, Joel Donald Gray, Donald B. Williams, Thomas J. Block
  • Patent number: 5399161
    Abstract: An endoscopic kitner features a delivery tube with a continuous supply of absorbent material. The absorbent material is retractable into a housing as new absorbent material is placed in position for use. The spent absorbing material is movable into a housing for removal of the kitner. A hand-held drive mechanism is employed to advance the absorbent material.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: March 21, 1995
    Assignee: Linvatec Corporation
    Inventors: Donald B. Williams, Peter L. Visconti
  • Patent number: 5308316
    Abstract: An endoscopic kitner features a delivery tube with a continuous supply of absorbent material. The absorbent material is retractable into a housing as new absorbent material is placed in position for use. The spent absorbing material is movable into a housing for removal of the kitner. A hand-held drive mechanism is employed to advance the absorbent material.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: May 3, 1994
    Assignee: Edward Weck Incorporated
    Inventors: Donald B. Williams, Peter L. Visconti
  • Patent number: 5289817
    Abstract: An endoscopic tissue retractor capable of being inserted through an endoscopic tube and subsequently capable of forming a T-shaped bar at its distal end. The legs of the "T" may be aligned with the axis of the tissue retractor for insertion within an endoscopic tube and situated transversely to the longitudinal axis for actual use. In use, the legs extend to diametrically opposed sides of the longitudinal axis of the tissue retractor and are rotatable in a plane passing through the axis of the endoscopic tube. A transversely slidable locking mechanism is provided to lock the components of the tissue retractor in a desired position.
    Type: Grant
    Filed: August 20, 1991
    Date of Patent: March 1, 1994
    Assignee: Linvatec Corporation
    Inventors: Donald B. Williams, Peter L. Visconti
  • Patent number: 4759756
    Abstract: Various embodiments of an improved reconstitution device 30, 168, 170, 186, 242, 256, 274 are disclosed, directed to the proper mixing of two substances, and are particularly directed to the medical field for the reconstitution of a drug 36 which may be stored in a drug vial 32 with a diluent 60 stored in a flexible medical solution container 34 and used for the intravenous delivery of a medicament. In one embodiment the reconstitution device 30 includes an improved vial adapter 76 and bag adapter 78 which permit the permanent coupling of the vial 32 and liquid container 34. The bag adapter 78 may be rotatable relative to the vial adapter 76 to operate a valve including a stem channel 108 and a base post 148 on the vial adapter 76, a base segment channel 136 and a cut out portion 146 of a rim 140 on the bag adapter 78, and a sealing segment 80 disposed between the vial and bag adapter 76, 78.
    Type: Grant
    Filed: September 14, 1984
    Date of Patent: July 26, 1988
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Hugh M. Forman, Donald B. Williams