Patents by Inventor Paul Gisin

Paul Gisin 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).

  • Compression drill guide
    Patent number: 5507801
    Abstract: A drill guide for drilling screw holes in bone fragments that are to be stabilized by means of a device composed of a compression plate and round-headed screws, the drill guide having a hollow outer cylinder and hollow inner cylinder, positioned so that the hollow inner cylinder can be slid axially within the outer cylinder by means of a spring mechanism, the plate-side end of the outer cylinder and the plateside of the inner cylinder having the shape of the spherical underside of the head and the shank of the screws to be used, respectively.
    Type: Grant
    Filed: December 16, 1992
    Date of Patent: April 16, 1996
    Assignee: Synthes (U.S.A.)
    Inventors: Paul Gisin, Stephan M. Perren
  • Bone screw
    Patent number: 5180382
    Abstract: A bone screw (1) has a screw head (2), a screw tip (11), and a shaft (5) with a thread (8,14). The threaded segment (6,7) of the shaft (5) has a head-end, essentially cylindrical first shaft section (6) with minor diameter d.sub.1 (16), and a tip-end second shaft segment (7) that is connected with the first shaft segment (6) and which has a smaller minor diameter d.sub.2 (17). The thread (8,14) in the two shaft segments (6,7) has the same pitch (10,12).
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: January 19, 1993
    Assignee: Synthes (U.S.A.)
    Inventors: Robert Frigg, Stephan Perren, Martin Allgower, Paul Gisin
  • Angular attachment for drill
    Patent number: 5041119
    Abstract: An angle frame for surgical use is made of materials permeable by X-radiation.
    Type: Grant
    Filed: December 5, 1989
    Date of Patent: August 20, 1991
    Assignee: Synthes
    Inventors: Robert Frigg, Paul Gisin, Guido Scandella
  • Bone screw
    Patent number: 5019078
    Abstract: A bone screw has a smooth shaft segment, a threaded segment and a tapered transition segment between the shaft and the threaded segment.
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: May 28, 1991
    Assignee: Synthes (U.S.A.)
    Inventors: Stephen M. Perren, Robert Frigg, Paul Gisin, Robert Mathys, Jr.
  • Sighting instrument
    Patent number: 4803976
    Abstract: A sighting instrument, particularly for surgical purposes, comprising a handle, a tool socket and a direction finder which may be held between a radiation source and a radiation receiver, the position of which can be represented visibly by means of an image converter, allowing continuous adjustment of its orientation.
    Type: Grant
    Filed: April 8, 1988
    Date of Patent: February 14, 1989
    Assignee: Synthes
    Inventors: Robert Frigg, Paul Gisin, Stephan M. Perren, Urs Jenny, Gebhard Ritter
  • Device for producing a hole in a bone
    Patent number: 4341206
    Abstract: A tool for forming a stepped blind hole in bone for receipt of a fracture reducing and stabilizing surgical implant. The tool comprises a small diameter drill portion axially adjustable with respect to a larger diameter reamer portion. A conical portion includes cutting surfaces to chamfer the entrance of the hole and also includes non-cutting portions which serve to limit penetration of the tool into the bone. The tool is cannulated to allow its use in conjunction with a previously installed Kirschner guide wire.
    Type: Grant
    Filed: December 18, 1979
    Date of Patent: July 27, 1982
    Assignee: Synthes AG
    Inventors: T. Robert Perrett, Franz Sutter, Paul Gisin