Device for measuring the pressure of blood in extracorporeal blood circuit.

摘要

Device for measuring blood pressure in a conduit (44) of an extracorporeal blood circuit (42) comprising a section for measuring the pressure (46) having a compartment (58) which is delimited by a main wall (64) and by a secondary wall (65) facing it, the two walls (64, 65) substantially rigid and parallel, the main wall (64) a hole (66) which is sealed by a closure element main (68), the inner face (70) which is in contact with the blood and the external face (72) which is in contact with ambient air, being possible to elastically deform or displace the closure element main (68 ) along an axis of deformation or displacement (AA), which is substantially orthogonal to its general plane, under the effect of the blood pressure, being designed main closure element (68) for coupling to a detector load (56), so that a part of the external face (72) of the main closure element (68), in its rest state, is in direct or indirect contact with the load sensor (56), which can measure the force applied axially to the internal face ( 70) of the main closure element (68) by the blood pressure, in order to calculate therefrom the value of this pressure.