Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1989-12-22
1991-05-28
Pellegrino, Stephen C.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604251, 251342, A61M 500
Patent
active
050190555
ABSTRACT:
A flow regulator for liquid to be administered parenterally to a patient comprises a first member having a flow passage therein for the liquid and a second member arranged to be adjustably telescoped in the passage. The first and second members are constructed such that they can be telescopingly positioned to form a flow rate controlling channel which restricts the flow rate as a function of the length of the channel. The length of the channel is adjustable by changing the relative position of the first and second members. An adjustment force applied to the outside of the regulator is transmitted to the second member within the flow regulator for changing the channel length and therefore the flow rate. The flow regulator can include a drip chamber positioned immediately above the second member for convenient adjustment of the flow rate. Sealing against leakage of air into the flow regulator is attainable because the flow rate controlling second member is located entirely within the first member.
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Lewis Ralph A.
Pellegrino Stephen C.
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