Portable infusion apparatus

Details Portable infusion apparatus Portable infusion apparatus

1980-02-14

1981-11-17

Yasko, John D.

Surgery

Respiratory method or device

Ozone or ion generation

128DIG12, A61M 500

Patent

active

043005543

ABSTRACT:
Disclosed is a portable continuous infusion apparatus for administering an injectable liquid to a patient. The apparatus expells the contents of a syringe on a time controlled basis. It employs two separate springs, with one spring used to power a clockwork and another spring to power a gear rack to advance the syringe plunger or piston. Opening and shutting the apparatus cover automatically winds both springs simultaneously. A safety prevents closing the cover unless the springs are wound. Advancement of the gear rack is adjustable by a control which acts on an escapement lever which regulates an escape wheel. The control moves the escapement lever axially so it can engage a different number of wings on the escape wheel, thereby regulating the incremental advance of the gear rack acting on the syringe plunger.

REFERENCES:
patent: 2602446 (1952-07-01), Glass et al.
patent: 2896621 (1959-07-01), Rodrigues
patent: 3415419 (1968-12-01), Jewett et al.
patent: 3886938 (1975-06-01), Szabo et al.
patent: 4059110 (1977-11-01), Wuthrich et al.

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