Process for forming a passageway in an osmotic device

Details Process for forming a passageway in an osmotic device Process for forming a passageway in an osmotic device

1979-07-30

1981-06-02

Czaja, Donald E.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Stratified or layered articles

264119, 264128, 264DIG51, D04H 120

Patent

active

042711134

ABSTRACT:
A process is disclosed for forming an outlet passageway in an osmotic dispensing device. The process comprises compressing a drug formulation into a solid mass, forming a recess in the solid mass, and then spray coating the mass with a wall forming material that surrounds the mass. The outlet passageway in the wall is formed at the recess simultaneously and automatically during the coating procedure. The passageway extends through the wall and communicates with the drug and the exterior of the device for dispensing the drug over a prolonged period of time.

REFERENCES:
patent: 2059983 (1936-11-01), Dent et al.
patent: 2844489 (1958-07-01), Gemmer
patent: 3146169 (1964-08-01), Stephenson et al.
patent: 3916899 (1975-11-01), Theeuwes

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