A cardiac monitoring and/or stimulation method and systems provide monitoring, defibrillation and/or pacing therapies, including systems detecting and/or treating cardiac arrhythmia. A system includes a housing coupled to a plurality of electrodes configured for subcutaneous non-intrathoracic sensing....http://www.google.de/patents/US20040230128?utm_source=gb-gplus-sharePatent US20040230128 - Separation of a subcutaneous cardiac signal from a plurality of composite signals
