Patent ID: 6954671

Claim:
An implantable heart stimulator comprising: a heart signal detector connected to a cardiac lead having an electrode adapted to detect electrical a heart signal originating from either a ventricle or an atrium; at least two detection channels connected to said heart signal detector for receiving said electrical heart signal from said electrode; each of said detection channels comprising a bandpass filter which emits a bandpass filtered signal at a filter output, a threshold detector which compares said bandpass filtered signal to a threshold and which generates a threshold detector output signal if said bandpass filtered signal exceeds said threshold, and a peak amplitude determining unit connected to the output of said bandpass filter which generates a peak amplitude value of said bandpass filtered signal; the respective bandpass filters in said at least two detection channels having different passbands from each other, and each of said detection channels being continuously active; and a heart event identifying unit connected to the threshold detector and the peak amplitude determining unit in each of said detection channels which unambiguously identifies, by applying predetermined heart event identifying criteria to the threshold detector output and the peak amplitude value from each of said detection channels, a type of the electrical heart signal detected by said heart signal detector.