Installation for the processing of EKG signals

DETAILED DESCRIPTION Referring now in detail to the schematic block diagram shown in the drawing, through the use of electrodes located, for example, on the body of a patient, EKG signals tapped-out therewith are transmitted to the input E of a preprocessing arrangement 1.
The preprocessing arrangement 1 thereby includes, for example, a preamplifier for the EKG signals, a band-pass for the selection of frequencies, for example, which are significant for the QRS-complexes and, upon occasion, also an amplitude-compensating regulatory circuit for the R-display amplitudes.
The EKG signals which are received at the output of the preprocessing arrangement are then transmitted, through a diode 2 having a series-connected ohmic resistance 3, to the input E.
sub.
MK of a monostable flip-flop or stepping oscillator 4.
The monostable flip-flop 4 hereby includes two transistors 5 and 6.
The transistor 5 is herewith connected on its base side, on the one hand, to a negative operative voltage -U.
sub.
o (for example, -15 volt) through an ohmic resistance 7, and, on the other hand, connected through a ohmic resistance 8 with the collector of the transistor 6.
Both transistors 5 and 6 further are each connected through, respectively, a collector resistance 9 or 10 with a positive operating voltage +U.
sub.
0 (for example, +15 volts).
Correspondingly applicable is also the base resistance 11 which is coupled to the base of the transistor 6 through a diode 12.
Additionally coupled to the input of the diode 12 the oscillating condenser 13 of the monostable flip-flop 4.
The operative connection of this oscillating condenser 13 to the collector of the transistor 5 is effected, on the one hand, across a high-ohmic series resistance 14, as well as, on the other hand a zener diode 15 which is connected in parallel thereto.
The element 16 represents an indicating or processing apparatus for the collector output impulses of the transistor 5.
In the monostable flip-flop 4 as shown in the figure of the drawing, the transistor 5 provides a threshold element for the R-displays or waves of the EKG signals which come from the preprocessing arrangement