Patents by Inventor Lee A. Cantrell

Lee A. Cantrell 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).

  • Device and method for cardiac arrhythmia therapy with failure detection and backup
    Patent number: 5571141
    Abstract: An implantable automatic cardioverter/defibrillator device for a cardiac patient has a primary control mode for a defibrillation therapy delivery system. The primary control mode is responsive to detection of fibrillation of the patient's heart for causing the delivery of a preselected electrical waveform therapy to the heart. The device also has a secondary control mode which is enabled by detecting a predetermined failure mechanism that causes malfunctioning of the primary mode. The enabled secondary control mode uses at least some of the functional part of the primary mode in responding to fibrillation of the patient's heart to initiate generation of defibrillation therapy for application to the patient's heart.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: November 5, 1996
    Assignee: Intermedics, Inc.
    Inventors: Ken R. McNeil, Lee A. Cantrell, Balakrishnan Shankar