Expanding Bow Patents (Class 604/105)
  • Urethral catheter
    Patent number: 4553959
    Abstract: A urethral catheter comprising a tube for insertion into the bladder and having an inlet (17) for the drainage of urine via the tube, and a wall portion (18) having reduced thickness and increased flexural properties such that this wall portion (18) will undergo substantially complete collapse under normal urethral pressure thus to comply with the irregular and slit-like lumen (11) but permit adequate distension for normal drainage.
    Type: Grant
    Filed: January 21, 1983
    Date of Patent: November 19, 1985
    Assignee: The Victoria University of Manchester
    Inventors: David S. Hickey, John C. Brocklehurst