Patents Examined by L. C. M. Dvorak
  • Chest compression apparatus
    Patent number: 5056505
    Abstract: Oscillatory chest compression apparatus to aid in loosening and eliminating mucus from the lungs of a cystic fibrosis patient. The apparatus includes a mechanism for applying pressurized air to a bladder covering the chest of a person and a mechanism for venting pressurized air from the bladder. In addition, the apparatus includes a mechanism for supplying the air to the bladder in a pattern of pulses having high rise times like square waves. The application of the pressurized pulses and the pulse rate is controllable by the patient.
    Type: Grant
    Filed: January 30, 1990
    Date of Patent: October 15, 1991
    Assignee: Regents of the University of Minnesota
    Inventors: Warren J. Warwick, Leland G. Hansen