Self-driven fluid dispenser

Details Self-driven fluid dispenser Self-driven fluid dispenser

1980-07-18

1981-11-17

Rosenbaum, C. Fred

Surgery

Respiratory method or device

Ozone or ion generation

106169, A61M 700

Patent

active

043005586

ABSTRACT:
An improvement in self-driven miniature fluid dispensers is disclosed. The basic components of the dispensers are: an outer rigid semipermeable cellulose membrane that acts as a housing, an inner collapsible bag housed within the membrane that is adapted to contain the fluid, a water-imbibing composition interposed between the outer membrane and the inner bag, and a port that extends from the interior of the bag to the exterior of the dispenser through which the fluid may be charged to and discharged from the dispenser. The improvement lies in using a blend of cellulose acetate butyrate and polymethylmethacrylate to make the outer membrane, thereby forming a membrane of reduced water permeability.

REFERENCES:
patent: 3987790 (1976-10-01), Eckenhoff et al.
patent: 3995631 (1976-12-01), Higuchi et al.
patent: 4034756 (1977-07-01), Higuchi et al.
patent: 4077407 (1978-03-01), Theeuwes et al.

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