Patents by Inventor Per Renstrom

Per Renstrom 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).

  • Method and an apparatus for joint-controlled training of different motoric units for development of functional muscle strength and proprioceptivity
    Patent number: 5330417
    Abstract: A method and apparatus for joint controlled training of different motoric units for development of functional muscle strength and proprioceptiviety, wherein the direction of action of the resistance is adjusted in relation to the muscle groups or motoric units to be trained. In the method and apparatus all joint positions are arrested for the joints associated with the groups of muscles or the motoric units to be trained. The apparatus incorporates orthoses (1, 4, 5) for arresting positions of all joints which are affected by the muscle groups or motoric units to-be-trained, as well as a non-resilient strap (8). The strap (8) facilitates adjustment of the angle under which a load (12) is applied.
    Type: Grant
    Filed: October 3, 1991
    Date of Patent: July 19, 1994
    Inventors: Ken Petersen, Per Renstrom, Malcolm Pope
  • Permanent ligament prosthesis
    Patent number: 4773910
    Abstract: A cruciate ligament prosthesis constructed with two separately tensionable strands. Each strand is composed of a plurality of fine polyolefin filaments, each filament having a diameter of from 25 to 50 microns and the breaking strength of each strand is at least 1000 pounds.
    Type: Grant
    Filed: August 17, 1987
    Date of Patent: September 27, 1988
    Assignee: Johnson & Johnson Consumer Products, Inc.
    Inventors: Elizabeth H. Chen, Alastair J. T. Clemow, Steven W. Arms, Malcolm H. Pope, Per Renstrom