Patents by Inventor William J. Bolt

William J. Bolt 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).

  • Ventricular support system
    Patent number: 4782817
    Abstract: An extracorporate ventricular support system includes a two bladder pump employing continuous gravity fill to the first bladder, while the second bladder is pneumatically driven to produce a pulsatile blood flow. A processor responds to air flow in the pneumatic drive line to control the pump through an electromagnetic valve supplying pressurized air. The program controls the output of blood volume per stroke to meet a target value.
    Type: Grant
    Filed: May 29, 1987
    Date of Patent: November 8, 1988
    Assignee: Abiomed Cardiovascular, Inc.
    Inventors: Param I. Singh, William J. Bolt, Dana C. Sawyer