Patents by Inventor Jeffrey T. Laackman

Jeffrey T. Laackman 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).

  • Implantable N-phasic defibrillator output bridge circuit
    Patent number: 4998531
    Abstract: An output bridge circuit comprising four independently controlled transistors connected between first and second electrode terminals and a defibrillation capacitor. Two of the four transistors are driven by push-pull driver circuits and connected between the capacitor and the first and second electrode terminals. The remaining two transistors are connected between the first and second electrode terminals and ground terminals. By triggering one of the transistors connected to the push-pull driver circuits and one of the transistors connected between the electrode terminals and the ground terminal, a mono-phasic, multi-phasic, or sequential defibrillation pulse can be generated by activating the appropriate transistors.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: March 12, 1991
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: David E. Bocchi, Jeffrey T. Laackman, Stanley M. Bach, Jr.
  • Implantable N-phasic defibrillator output bridge circuit
    Patent number: RE34879
    Abstract: An output bridge circuit comprising four independently controlled transistors connected between first and second electrode terminals and a defibrillation capacitor. Two of the four transistors are driven by push-pull driver circuits and connected between the capacitor and the first and second electrode terminals. The remaining two transistors are connected between the first and second electrode terminals and ground terminals. By triggering one of the transistors connected to the push-pull driver circuits and one of the transistors connected between the electrode terminals and the ground terminal, a mono-phasic, multi-phasic, or sequential defibrillation pulse can be generated by activating the appropriate transistors.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: March 14, 1995
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: David E. Bocchi, Jeffrey T. Laackman, Stanley M. Bach, Jr.