Patents by Inventor Charles Gresl, Jr.

Charles Gresl, Jr. 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).

  • Device for anchoring trocar sleeve
    Patent number: 5267970
    Abstract: A device for mounting a tubular sleeve for an obturator of a trocar to a patient's body includes a sleeve-holding part for attaching to the sleeve and a skin-fixation part for attaching to the patient's skin surface. The sleeve-holding part may be formed by an annular washer made of an elastic material which permits a user to move it longitudinally with respect to the sleeve so as to adjust their relative positions. The skin-fixation part may be a crossbar and a cord attached to the washer at one end and to the crossbar at the other. The cord is stapled to the patient's body for fixation.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: December 7, 1993
    Assignee: Origin Medsystems, Inc.
    Inventors: Albert K. Chin, Charles Gresl, Jr., Frank T. Watkins, III
  • Blood serum separation filter disc
    Patent number: 3972812
    Abstract: An impregnated porous disc made of an inert material with voids adapted for insertion into a collection tube containing clotted blood which disc upon centrifugation of the tube will allow separation of fibrin and cellular material from the serum by centrifugal force during its controlled descent through the serum and will stop when it hits the serum-clot interface to isolate the serum from the clot.
    Type: Grant
    Filed: May 8, 1975
    Date of Patent: August 3, 1976
    Assignee: Becton, Dickinson and Company
    Inventor: Charles Gresl, Jr.