Piston cap and boot seal for a medication infusion system
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United States of America Patent
Stats
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Jul 10, 1990
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 unitary piston cap and boot seal for use in a medication infustion system is disclosed which is mounted on a rigid piston contained in a cylinder disposed in a cassette. The piston cap and boot seal, which are made of a flexible, elastomeric material, effectively both form the pumping element disposed in the cylinder, and prevent contamination of the pump through use of a rolling seal. The device may be sterilized by gas, since a tortuous path affording passage to gas is included in the retaining skirt mounted around the outer diameter of the pump cylinder.
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