TURBULENCE-SENSING BLOOD FLOWMETER

摘要

An apparatus which evaluates and signals a characteristic which is interdependent with a rate of flow of the bloodstream in an animal vascular system, by detecting and signalling undular alternations of pressure in the blood which alternations are the consequence of turbulence in the flow and are characteristically related to the flow rate. The invention includes the provision of means artificially to create the turbulence and may include adaptation to use in a surgical bypass duct. A C-shaped member fits onto the surgical bypass duct and turbulence in the duct which is indicative of flow rate is transmitted to the C-shaped member and to an acoustic transducer means mechanically connected to the C-shaped member which generates an electrical signal indicative of flow rate.