Patents Assigned to NPH Ltd.
  • Prosthetic anal sphincter
    Patent number: 5593443
    Abstract: A prosthetic anal sphincter is described which is implantable around the upper anal canal to reproduce the action of the sphincter muscles which maintain continence. This is achieved by inflating a tube with liquid from a reservoir and creating an angle of about 90.degree. between the rectum and the anal canal and by flattening the upper anal canal by squeezing the posterior wall of anal canal against the anterior wall.
    Type: Grant
    Filed: October 31, 1995
    Date of Patent: January 14, 1997
    Assignee: NPH Ltd.
    Inventors: Kenneth B. Carter, Ian G. Finlay, William Richardson