Apparatus for the recognition of the initiaton of heart beat, from an electrocardiogram under extreme conditions

Claim 1

Apparatus for the recognition of the initiation of heart beat from an electrocardiograph under extreme conditions, said apparatus comprising: a. at least one relatively wide-band conventionally controlled electrocardiographic amplifier connected to the output of the electrocardiograph and having a voltage output, b. a plurality of filter means covering a frequency spectrum and being electrically connected in parallel to the voltage output of the amplifier for filtering the entire output range of the electrocardiograph, c. each filter means having a respective voltage output, d. a plurality of trigger means wherein each trigger means is electrically connected to the voltage output of a respective filter means and is responsive to the pulse produced at said voltage output, e. each said trigger means having an output for transmitting trigger pulses, f. a logic control means electrically connected to all the pulse-transmitting outputs of said plurality of trigger means for receiving all said trigger pulses, g. said logic control means having an output for transmitting that trigger pulse from all the trigger pulses received, that is optimal for the recognition of cardiac activity, and h. means electrically connected to said output of the logic control means for displaying the initiation of the heart beat.