Piston cap and boot seal for a medication infusion system

Details Piston cap and boot seal for a medication infusion system Piston cap and boot seal for a medication infusion system

1987-12-01

1990-07-10

Smith, Leonard E.

Pumps

Motor driven

Electric or magnetic motor

604152, 92 99, F04B 2100

Patent

active

049403990

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.

REFERENCES:
patent: 2178953 (1939-11-01), Chilton
patent: 3224345 (1965-12-01), Doetsch
patent: 3250225 (1966-05-01), Taplin
patent: 3446154 (1969-05-01), Fuchs
patent: 3993061 (1976-11-01), O'Leary
patent: 4086036 (1978-04-01), Hagen et al.
patent: 4240335 (1980-12-01), Stucka et al.
patent: 4277226 (1981-07-01), Archibald
patent: 4396385 (1983-08-01), Kelly et al.
patent: 4729238 (1988-03-01), Bergmans
patent: 4798589 (1989-01-01), Tseo

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