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US 4,193,293 AGranted
Apparatus for determining blood elasticity parameters
AssigneeE.L.V.I. S.p.A.
InventorFrancesco Cavallari
Life of this patent
Estimating the term…
Abstract
Apparatus for determining blood elasticity parameters, comprising a cylinder suitable to be immersed in a blood container subjected to regular oscillations. The cylinder is rigidly secured to a frame oscillating according to a vertical axis and mechanically connected to an electromagnetic device generating a reaction force; the frame is also connected to a linear electromagnetic transducer suitable to supply signals to a thromboelastogram recording apparatus.
Claims8
An apparatus for determining blood elasticity parameters, comprising in combination:
- a cylinder rotatably carried about its vertical axis and suitable to be immersed in a blood container subjected to regular oscillations;
- a magnetic transducer for the cylinder oscillations connectable to an apparatus for recording the amplitude of the cylinder oscillations;
- the cylinder being rigidly suspended from a frame oscillating in line with the cylinder axis and being mechanically connected to a magnetic device exerting a reaction moment, said device comprising a ferromagnetic core rotating in a uniform magnetic field.
Dependencies are inferred from the claim text.