Patent ID: 7302294
Filing Date: 2007-11-27
Classification: A61B,A61N

Abstract:
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 and the detection and energy delivery circuitry, the processor configured to use the blood sensor signal to verify that the cardiac electrophysiologic signal comprises a cardiac signal, and configured to evaluate a cardiac rhythm using the blood sensor signal and the cardiac electrophysiologic signal comprising the cardiac signal.