DEVICE FOR MEASURING THE BLOOD PRESSURE UNDERSTANDING A MEMBRANE MOLDED IN A CASSETTE.

摘要

Extracorporeal blood circuit (42), comprising conduits (44) and a section (46) for measuring blood pressure within a conduit (44) that has a substantially rigid wall (64) comprising a hole (66) that is Seals by means of a closure element (68) made in one piece with the associated rigid wall (64) of the pressure measurement section (46), where the inner face (70) of the closure element (68) will be in contact with the blood and the external face (72) thereof will be in contact with the ambient air, it being possible that the closure element (68) is elastically deformed or moves globally along a deformation or displacement axis ( AA) substantially orthogonal to its general plane, under the effect of blood pressure, characterized by the fact that the closure element (68) comprises a substantially rigid central preform (74) that will be, in its resting state, in contact direct or ind directly with a load sensor (56), which is delimited by a thinned annular peripheral region (76) with an axial thickness less than the axial thickness of the rigid wall (64) to form an elastically deformable region with less resistance to the axial elastic deformation, in comparison with the rigid wall (64).