RESUMEN
Objective:Putting digital electrocardiograph detection method into practice, some problems could be find out and analyzed. Moreover, the quality safety of digital electrocardiograph can be guaranteed.Methods: According to the relevant national standards and regulations, EGC-1 c type verification instrument and CMRR tester can be used to detect the electrocardiograph. By checking the appearance of the electrocardiograph machine, testing various performance parameters to judge the accuracy of the electrocardiograph machine.Results: Through regular detection, not only can eliminate potential risk of digital electrocardiograph but also can make sure quality safety of clinical use.Conclusion: Quality control detection to digital electrocardiograph is an important component of medical safety. Detection on time and maintenance in time can ensure that the measurement size of monitors is correct and credible and these monitors serve the patients better.
RESUMEN
El prototipo DIGICARDIAC es un instrumento de uso médico que permite la adquisición simultánea de las doce derivaciones del electrocardiograma (ECG) estándar, con características de alta resolución (ECGAR). El presente trabajo reporta el desarrollo de la etapa de amplificación multicanal implementada en el hardware de este prototipo. Esta etapa consta de 8 amplificadores diferenciales en configuraciones especiales, con un elevado rechazo al ruido en modo común (CMRR). Los filtros utilizados permiten la corrección automática de la línea de base y la eliminación de señales de ruido por encima de los 300Hz. Adicionalmente se incorporaron los circuitos de protección correspondientes a un equipo médico. En las pruebas de funcionamiento se comprobó la eficiencia del dispositivo. Los resultados demostraron la superioridad del instrumento desarrollado en comparación con los electrocardiógrafos comerciales.
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.