Pumps – Expansible chamber type – Elongated flexible chamber wall progressively deformed
Patent
1994-12-14
1996-01-23
Bertsch, Richard A.
Pumps
Expansible chamber type
Elongated flexible chamber wall progressively deformed
138119, 138128, F04B 4308, F16L 1108
Patent
active
054860997
ABSTRACT:
A peristaltic pump having a pump conduit with an occlusive inlet segment. The pump includes a frame with rollers carried by rotor and rotated by a motor. A flexible conduit having an inlet end and an outlet end is positioned around the rollers and includes an occlusive segment and non-occlusive segment. In its free condition, the occlusive segment is collapsed and the passageway through it substantially completely occluded when the pressure within the occlusive segment is equal to or less than pressure acting on the outside of the occlusive segment. The non-occlusive segment is mildly biased to exhibit an inflated condition with an open passage when in its free condition with the pressure within the non-occlusive segment equal to pressure acting on the outside of the non-occlusive segment.
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Bertsch Richard A.
Korytnyk Peter G.
Michigan Critical Care Consultants, Inc.
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