Patents Assigned to William E. Trumbull
  • Patent number: 3998217
    Abstract: An improved surgical retractor device comprises a preferably generally flat, ring-shaped retractor frame with an open central working portion, a plurality of preferably generally flat surgical retractors with depending surgical opening-retracting ends, and connector means comprising spaced studs and mating holes on the frame and retractors to releasably secure the retractors in place without danger of pivoting of the retractors in use. Each retractor can be put in place and locked on the frame with one hand, so that its depending end extends into the open central portion of the frame for effective use. Each retractor can also be adjusted in position relative to the frame with one hand while the frame is in use. The device is simple, inexpensive, foolproof, durable and very easily used and sterilized. It contains no moving parts and cannot be easily damaged.
    Type: Grant
    Filed: January 13, 1975
    Date of Patent: December 21, 1976
    Assignees: William E. Trumbull, James J. Cogley
    Inventors: William Ernest Trumbull, James Joseph Cogley