Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1989-02-01
1990-04-17
Pellegrino, Stephen C.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
138 43, A61M 500
Patent
active
049176870
ABSTRACT:
A variable infusion device for administering liquids parenterally to a patient is formed of inexpensive plastic members. The device includes an elongated passage defined between two members of the device which are bonded to one another. A third member is movable relative to the first and second members to change the length of the elongated passage through which liquid flows thereby changing the flow rate of the liquid through the device. The liquid flow rates to the patient can be incrementally adjusted over a wide range of flow rates. Settings also include a flow rate for merely keeping the patient's vein open.
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"Low-Compliance Perfusion Pump for Oesophagael Manometry", P. Ask, Medical & Biological Engineering & Computing, Nov. 1978, pp. 732-738, vol. 16.
Lewis Ralph
Pellegrino Stephen C.
Sta-Set Corporation
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