These devices were designed in CLEMA for the cardiological clinics and EP labs in the early 80's.

The Pacemaker-Pulse Microcomputer is a microprocessor-based instrument, designed for automatic measurement and computation of pacing pulse parameters. It is designed for pacemaker follow-up and post-implantation/post-operative monitoring, to identify electrode or device malfunctions. The device measures pulse frequency, pulse duration, inter-pulse distance, A-V interval in cases where A and V pulses can be separately detected, pulse amplitude, slope of leading and trailing edge, pulse area in mV.ms etc. These parameters are printed upon request on a miniprinter. The pulse shapes are stored in memory, and can be plotted on a slow printer or ECG machine at time magnification x 100/200/500/1000. The Pacemaker-Pulse Microcomputer can also be used in monitoring mode, to continuously compute the above parameters and compare them to initial values. Deviation of 20% in any parameter would trigger automatically a printout. Amplifier sensitivity: 2 mV to 500 mV. ADC conversion time: 16 microseconds.

The Pace-Stopis designed for controllable temporary inhibition of pacemaker pulses, in order to examine the patient's spontaneous electrical activity in the electrophysiological labs. Such examinations are frequently needed, e.g. for planning a pacemaker replacement, for reprogramming of pacemaker parameters, for assessment of improvement of spontaneous activity in children after long-term pacing, etc. Pacing suppression is accomplished gradually following an automatic preprogrammed sequence, thus avoiding the unwanted effects of an eventual abrupt asystoly. The device is connected to the patient via two small contact electrodes, to be placed approximately along the heart's axis. A conventional ECG is taken simultaneously to blocking. The stop program gradually reduces the stimulated rhythm, for 60 s. the fully blocked state lasts 4 sec. The program can be interrupted by the doctor at any time, to restore normal stimulation whenever necessary. the fully stopped time interval can also be increased by holding down two buttons, but only after gradual suppression. Blocking pulses: double pulses, rectangular, 20 ms duration, 20 V amplitude. Power supply: 12 V rechargeable battery.

Pace-Stop