Patents Assigned to Health Products Research, Inc.
  • Rectal insert
    Patent number: 4563182
    Abstract: A method of treating hemorrhoids which comprises inserting into the rectum of a subject afflicted therewith a substantially cylindrical shaped insert, comprising a water swellable polymer having a water content of at least 35% by weight, said insert having previously been frozen by being subjected to a temperature below 0.degree. C. for a sufficient amount of time to freeze the free water therein and maintaining said insert with at least a portion thereof outside the sphincter muscle, and apparatus therefore.
    Type: Grant
    Filed: November 1, 1984
    Date of Patent: January 7, 1986
    Assignee: Health Products Research, Inc.
    Inventors: Vladimir A. Stoy, George P. Stoy
  • Dilation device for the cervix
    Patent number: 4480642
    Abstract: There is disclosed a cervical canal swelling device having an essentially cylindrically shaped stem formed in major portion thereof of a dehydrated hydrogel having a swelling capacity of 0.01 to 0.25 and an enforced unimaxial deformation of at least 1.1 and sized to a diameter of from 2 to 10 mm. and to a length of from 35 to 150 mm.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: November 6, 1984
    Assignee: Health Products Research, Inc.
    Inventors: Vladimir A. Stoy, George P. Stoy