Patents by Inventor Robert E. Graser

Robert E. Graser 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: 6004321
    Abstract: An apparatus and method for retrieval of fractured cannulated screws used for bone fixation. The retractor comprises a retraction shaft having a proximal end and a distal end, a tool shaft connected to the proximal end, a body having a reverse helix connected to the distal end, and a feeler shaft having a point connected to the body.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: December 21, 1999
    Inventor: Robert E. Graser
  • Patent number: 5891161
    Abstract: Two semicylindrical bodies, each mounted on a respective end of one member of a pair of pivotally interconnected blades, are closed to form a cylindrical body having a first end in which a frustoconical surface is arranged to guide a wire into a central bore, and a second end communicating with bore and in which a semi-spherical cavity is shaped to receive a bone end. The wire insertion guide is particularly applicable to procedures such as resectional arthroplasties requiring K-wire fixation, Hoffman-Clayton type rheumatoid forefoot reconstructive procedures, and procedures relating to finger reconstruction.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: April 6, 1999
    Inventor: Robert E. Graser
  • Patent number: 5843085
    Abstract: An osteotomy guide apparatus for assisting in the conduct of Chevron, Youngswick, and Reverdin osteotomy procedures. The osteotomy guide comprises a first and second saw slot converging at an apex. The apparatus further comprises a multiplicity of bone pin holes to firmly fix the osteotomy guide in place and optionally, a visualizer element to indicate to the surgeon the amount of correction which may be expected from the procedure before actual bone cuts are made. The guide may also comprise a first and second stage body which operate in a cooperative fashion to increase the amount of correction and stability provided by any given procedure.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: December 1, 1998
    Inventor: Robert E. Graser