×

Subcutaneous cardiac sensing and stimulation system employing blood sensor

  • US 20080091242A1
  • Filed: 10/17/2007
  • Published: 04/17/2008
  • Est. Priority Date: 04/11/2003
  • Status: Active Grant
First Claim
Patent Images

1. An implantable subcutaneous device, comprising:

  • a housing configured for subcutaneous non-intrathoracic placement;

    detection circuitry provided in the housing and configured to produce a cardiac electrophysiologic signal;

    energy delivery circuitry provided in the housing;

    at least one electrode configured for subcutaneous non-intrathoracic placement and coupled to the detection and energy delivery circuitry;

    an implantable blood sensor configured to produce a blood sensor signal; and

    a processor provided in the housing and coupled to the blood sensor, the detection circuitry, and the energy delivery circuitry, the processor configured to discriminate between a tachyarrhythmia condition that requires cardioversion or defibrillation therapy and a condition that does not require cardioversion or defibrillation therapy using the cardiac electrophysiologic signal and the blood sensor signal, the processor configured to withhold delivery of cardioversion or defibrillation therapy in response to determining, using the blood sensor signal, that the condition does not require cardioversion or defibrillation therapy.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×