The HEV Ventilator

Buytaert, J.; Abud, A. Abed; Allport, P.; 'Alvarez, A. Pazos; Akiba, K.; Francisco, O. Augusto de Aguiar; Bay, A.; Bernard, F.; Baron, S.; Bertella, C.; Brunner, J.; Bowcock, T.; Jode, M. Buytaert-De; Byczynski, W.; Carvalho, R. De; Coco, V.; Collins, P.; Collins, R.; Dikic, N.; Dousse, N.; Dowd, B.; Dumps, R.; Durante, P.; Fadel, W.; Farry, S.; Prieto, A. Fern'andez; Flynn, G.; Lima, V. Franco; Frei, R.; Torreira, A. Gallas; Guida, R.; Hennessy, K.; Henriques, A.; Hutchcroft, D.; Ilic, S.; Jevtic, A.; Joram, C.; Kapusniak, K.; Cid, E. Lemos; Lindner, J.; Lindner, R.; Milovanovic, M.; Mico, S.; Morant, J.; Morel, M.; Manne, G.; Murray, D.; Nasteva, I.; Neufeld, N.; Neuhold, I.; L'opez, F. Pardo-Sobrino; Trigo, E. P'erez; Jallas, G. Pichel; Pilorz, E.; Piquilloud, L.; Pons, X.; Reiner, D.; Roosens, C.; Rostalski, P.; Schmidt, B.; Saucet, E.; Sanders, F.; Sigaud, C.; Schoettker, P.; Schwemmer, R.; Schindler, H.; Sharma, A.; Svihra, P.; Leemput, J. van; Vignaux, L.; Vasey, F.; Woonton, H.; Wyllie, K.

HEV is a low-cost, versatile, high-quality ventilator, which has been designed in response to the COVID-19 pandemic. The ventilator is intended to be used both in and out of hospital intensive care units, and for both invasive and non-invasive ventilation. The hardware can be complemented with an external turbine for use in regions where compressed air supplies are not reliably available. The standard modes provided include PC-A/C(Pressure Assist Control),PC-A/C-PRVC(Pressure Regulated Volume Control), PC-PSV (Pressure Support Ventilation) and CPAP (Continuous Positive airway pressure). HEV is designed to support remote training and post market surveillance via a web interface and data logging to complement the standard touch screen operation, making it suitable for a wide range of geographical deployment. The HEV design places emphasis on the quality of the pressure curves and the reactivity of the trigger, delivering a global performance which will be applicable to ventilator needs beyond theCOVID-19 pandemic. This article describes the conceptual design and presents the prototype units together with their performance evaluation.