System and method for monitoring a heartbeat

Details System and method for monitoring a heartbeat System and method for monitoring a heartbeat

A - Human Necessities

61

B

A61B 5/113 (2006.01) A61B 5/11 (2006.01) G01P 13/00 (2006.01)

Patent

CA 2269713

A monitor system for monitoring the heartbeat, in particular of a baby, without being attached to the living being, comprising a transducer (40, 80) responsive the the heartbeat to generate an electrical signal, the system further comprising a filter (226) for filtering the electrical signal and processing circuitry (236) to process the filtered signal. An oscillating element generates, in response to a heartbeat signal, a sinusoidal signal of decaying amplitude. The oscillating element comprises an active band-pass filter (230), which passes a selected range of frequencies centred on a frequency of between 10 Hz and 15 Hz. The processing circuitry (236) is arranged to activate an alarm if the heartbeat ceases.

L'invention concerne un système de surveillance pouvant contrôler les pulsations cardiaques, en particulier d'un nourrisson, sans être relié à l'être vivant. Le système comprend un transducteur (40, 80) qui réagit aux pulsations cardiaques en émettant un signal électrique, un filtre (226) pour filtrer le signal électrique, et un circuit de traitement (236) pour traiter le signal filtré. Un élément oscillant émet, en réponse à un signal de pulsation cardiaque, un signal sinusoïdal d'amplitude décroissante. L'élément oscillant comprend un filtre passe-bande actif (230) qui fait passer une gamme de fréquences sélectionnée centrée sur une fréquence comprise entre 10 Hz et 15 Hz. Le circuit de traitement (236) est conçu pour activer une alarme en cas d'arrêt des pulsations cardiaques.

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