Pressure diaphragm for a medication infusion system

Details Pressure diaphragm for a medication infusion system Pressure diaphragm for a medication infusion system

1987-12-01

1989-08-15

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

73727, 92103R, 128675, G01L 708

Patent

active

048563404

ABSTRACT:
A pressure diaphragm installed in a disposable cassette for use on a main pump unit is disclosed which allows pressure downstream of a fluid pump to be measured with a high degree of accuracy. The pressure diaphragm is located over a raised cylindrical pressure plateau, and is spaced away from the plateau on the top and on the sides thereof to allow for a free movement of the pressure diaphragm. Fluid flow is from one side of the pressure plateau to the opposite side, with fluid flowing between the pressure diaphragm and the top and sides of the pressure plateau, as well as through a channel disposed in the pressure plateau.

REFERENCES:
patent: 3713341 (1973-01-01), Madsen et al.
patent: 4398542 (1983-08-01), Cunningham et al.

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