Infusion device

Details Infusion device Infusion device

1987-02-13

1988-10-04

Pellegrino, Stephen C.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604 65, 128DIG13, A61M 5165

Patent

active

047753684

ABSTRACT:
An infusion device is provided with an injection molded drip chamber, a drop sensor, such as a light barrier (26,28) or a piezoelectric crystal. An evaluation circuit processes the output signals furnished by the drop sensor and an optical display means (24) indicates the same to the operator. Recesses are formed integrally in or at the drip chamber to take up the drop sensor (26,28) the evaluation circuit, and the power source as this not only makes it possible to produce the infusion device at low cost but also permits the operator to have a look into the drip chamber, while the dripping rate is displayed optically at the same time. In a preferred modification there is complete control of the dripping rate by means of a control clamp (60) the flow cross section of which is adjustable by a drive means (64).

REFERENCES:
patent: 2807012 (1957-09-01), Schwarz
patent: 3235069 (1966-02-01), Bennett et al.
patent: 3479001 (1969-11-01), Dower
patent: 4038982 (1977-08-01), Burke et al.
patent: 4397648 (1983-08-01), Knute
patent: 4493710 (1985-01-01), King et al.
patent: 4496351 (1985-01-01), Hillel et al.
patent: 4583975 (1986-04-01), Pekkarinen et al.
patent: 4652262 (1987-03-01), Ueracchi
patent: 4681569 (1987-07-01), Coble et al.

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