Positive pressure drug releasing device

Details Positive pressure drug releasing device Positive pressure drug releasing device

1980-02-25

1982-01-26

Rosenbaum, C. Fred

Surgery

Respiratory method or device

Ozone or ion generation

A61M 700

Patent

active

043123473

ABSTRACT:
A positive pressure long-term drug delivery device particularly useful for the intravaginal or intrauterine release of a drug capable of passing through a diffusion membrane and being absorbed by the vaginal or uterine epithelium. The device includes a tubular casing having a plunger urged by a compression spring to create a continuous positive pressure on a drug in liquid form within the chamber of the casing, a supported membrane at one end of the casing through which such drug diffuses at a predetermined rate, and resilient elements at the opposite end of the casing for facilitating retention of the device throughout the term of administration of the drug.

REFERENCES:
patent: 1476946 (1923-12-01), Bessesen
patent: 3057344 (1962-10-01), Abella et al.
patent: 3492993 (1970-02-01), Tillman
patent: 3659600 (1972-05-01), Merrili
patent: 3788322 (1974-01-01), Michaels
patent: 3929132 (1975-12-01), Higuchi
patent: 3948263 (1976-04-01), Drake
patent: 4004582 (1977-01-01), Nakamura et al.
patent: 4014334 (1977-03-01), Theeuwes
patent: 4036227 (1977-07-01), Zaffaroni
patent: 4160452 (1979-01-01), Theeuwes

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