A flow control device for use with flowing fluids to monitor pressure during blood pressure measurements having at least one passage extending from an inlet to an outlet. This passage has two flow paths, one a non-closable, narrow flow path including a capillary bore for normal flow. The other is a flushing...http://www.google.es/patents/US4696305?utm_source=gb-gplus-sharePatente US4696305 - Flow controller
