Pressure diaphragm for a medication infusion system
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United States of America Patent
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Aug 15, 1989
Grant Date -
N/A
app pub date -
Dec 1, 1987
filing date -
Dec 1, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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