Resumen

DUGARTE J, Nelson; MEDINA M, Rubén; ROJAS S, Rubén  y  DUGARTE D, Edinson. Multichannel bioamplifier for ECGAR signal acquisition, DIGICARDIAC prototype. INHRR [online]. 2014, vol.45, n.2, pp.10-29. ISSN 0798-0477.

The prototype DIGICARDIAC is a medical instrument that allows the simultaneous acquisition the twelve lead of standard electrocardiogram (ECG), with high resolution features (ECGAR ). This paper reports the development the multichannel amplifier implemented in the hardware of this prototype. This section consists of 8 differential amplifiers in special configurations, with a high common mode rejection ratio (CMRR). The filters used allow automatic correction of baseline and eliminating noise signals above 300Hz. Additionally were incorporated protective circuits corresponding to a medical team. In the device operation testing efficiency was checked. The results demonstrated the superiority of the instrument developed in comparison with commercial electrocardiographs.

Palabras clave : Digital electrocardiograph; Multichannel bioamplifier; Electrocardiogram; Signal ECGAR.

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