Ruminal drug delivery device

Details Ruminal drug delivery device Ruminal drug delivery device

1995-06-07

1997-06-17

Phelan, D. Gabrielle

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Tablets, lozenges, or pills

424438, 6048921, F61K 924

Patent

active

056394772

ABSTRACT:
The present invention is concerned with improving the delivery of a drug from a ruminal delivery device to give a consistent delivery of drug to the ruminal environment. Thus, the invention is directed to an improved ruminal drug delivery device comprising a semipermeable membrane having an exit orifice and defining a compartment, the compartment containing a swellable osmotic agent expandable driving member, a drug to be dispensed, a density element and, optionally, a partition layer between the osmotic expandable driving member and the drug formulation, wherein the improvement comprises an essentially gas-impermeable barrier means that separates the density element from the other components within the delivery device for isolating gases evolved from the density element from the other components within the delivery device. The barrier means further includes a coupling to transfer osmotic pressure to the semipermeable wall. The invention is also directed to methods and articles for providing a consistent delivery of drug from a ruminal drug delivery device.

REFERENCES:
patent: 4595583 (1986-06-01), Eckenhoff et al.
patent: 4612186 (1986-09-01), Eckenhoff et al.
patent: 4772474 (1988-09-01), Eckenhoff et al.
patent: 4844984 (1989-07-01), Eckenhoff et al.
patent: 4872873 (1989-10-01), Zingerman
patent: 5045082 (1991-09-01), Ayer et al.
patent: 5122128 (1992-06-01), Cardinal et al.
patent: 5206024 (1993-04-01), Peery et al.
patent: 5213809 (1993-05-01), Wright et al.

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