Patents Assigned to George J. Picha
  • Spinal implant
    Publication number: 20020040242
    Abstract: A spinal implant including a hollow, generally tubular shell having an exterior lateral surface, a leading end, and a trailing end. The exterior surface includes a plurality of pillars arranged in a non-helical array. Each pillar has a height of 100-4500 microns and a lateral dimension at the widest point of 100-4500 microns. The exterior surface also has a plurality of holes therethrough to permit bone ingrowth therethrough.
    Type: Application
    Filed: December 5, 2001
    Publication date: April 4, 2002
    Applicant: George J. Picha
    Inventors: George J. Picha, Jeffrey A. Goldstein
  • Spinal implant
    Patent number: 6071310
    Abstract: A spinal implant including a hollow, generally tubular shell having an exterior lateral surface, a leading end, and a trailing end. The shell has a helical thread projecting from its exterior surface. The thread includes a plurality of pillars. Each pillar has a height of 100-4500 microns and a lateral dimension at the widest point of 100-4500 microns. The exterior surface has a plurality of holes therethrough to permit bone growth therethrough. The spinal implant may alternatively have a plurality of pillars projecting from its exterior surface in a regular, non-helical array.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: June 6, 2000
    Assignee: George J. Picha
    Inventors: George J. Picha, Jeffrey A. Goldstein
  • Spinal implant
    Patent number: 5876457
    Abstract: A spinal implant including a hollow, generally tubular shell having an exterior lateral surface, a leading end, and a trailing end. The shell has a helical thread projecting from its exterior surface. The thread includes a plurality of pillars. Each pillar has a height of 100-4500 microns and a lateral dimension at the widest point of 100-4500 microns. The exterior surface has a plurality of holes therethrough to permit bone growth therethrough. The spinal implant may alternatively have a plurality of pillars projecting from its exterior surface in a regular, non-helical array.
    Type: Grant
    Filed: May 20, 1997
    Date of Patent: March 2, 1999
    Assignee: George J. Picha
    Inventors: George J. Picha, Jeffrey A. Goldstein
  • Collagen disruptive surface morphology for implants
    Patent number: 5798065
    Abstract: An implant is provided with an open-celled silicone elastomer foam outer layer. The implant may be formed by compressively deforming beads mixed with liquid elastomer in a mold containing a preformed support structure. The elastomer is cured and the beads dissolved out. Infusion and sensor catheters covered with the foam provide improved transport rates and faster response.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: August 25, 1998
    Assignee: George J. Picha
    Inventor: George J. Picha
  • Infusion device for soft tissue
    Patent number: 5564439
    Abstract: An implant is provided with an open-celled silicone elastomer foam outer layer. The implant may be formed by compressively deforming beads mixed with liquid elastomer in a mold containing a preformed support structure. The elastomer is cured and the beads dissolved out. Infusion and sensor catheters covered with the foam provide improved transport rates and faster response.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: October 15, 1996
    Assignee: George J. Picha
    Inventor: George J. Picha