Compliant rotor for an improved cartridge for drug infusion pump

Details Compliant rotor for an improved cartridge for drug infusion pump Compliant rotor for an improved cartridge for drug infusion pump

1993-09-24

1994-07-05

Bertsch, Richard A.

Pumps

Expansible chamber type

Elongated flexible chamber wall progressively deformed

418 45, 417474, F04B 4312

Patent

active

053262360

ABSTRACT:
An improved rotor for use with a segmented peristaltic cartridge comprising a housing and a cover for assembly, said assembled housing and cover defining a pumping chamber which holds the improved rotor, a rotor sleeve and a section of flexible tubing wrapped around the rotor and connected to respective inlet and outlet ports of the cartridge. The flexible rotor includes an eccentric structure wherein flexible beam members provided on an outer surface of the rotor form a compliant member which improves the flexibility of the rotor assembly to avoid excessive compression loads or high torque and/or dynamic leak back or low torque for the tubing in the cartridge.

REFERENCES:
patent: 1543163 (1925-06-01), Johnson et al.
patent: 4431327 (1984-07-01), Mazzagatti
patent: 4472116 (1984-09-01), Wenstrup
patent: 4559040 (1989-12-01), Horres et al.
patent: 5057081 (1991-10-01), Sunderland

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