Cardiac monitoring installation for freely-moving patients - utilises radio links between two ECG sensors placed on chest of patient, and central autonomous receiver

摘要

Each patient is monitored by two skin electrodes (1,2) wired (3,4) to a pocket transmitter (5) powered by a ama small battery (6). ECG signals are thus transmitted by modulated radio waves to a central receiver (7) associated with any conventional decoding monitor (8). The receiver is equipped with output sockets (9,10,11) suitable for the insertion of standard plugs (12,13,14) at the ends of input conductors (15,16,17) of the monitor (8). The lightweight sensor and transmitter do not encumber the patient, nor impose stress on the wires which would give rise to intermittent contacts, false alarms or parasitic signals. The monitoring is consequently more accurate and reliable, and can be computerised with confidence even when a patient is equipped with a pacemaker. The compact receiver is compatible with existing monitors having standard input connectors which are not subject to the safety requirements imposed by direct wiring connection to the patients.