Osmotic delivery system having space efficient piston

Details Osmotic delivery system having space efficient piston Osmotic delivery system having space efficient piston

2006-02-14

2006-02-14

Kennedy, Sharon (Department: 3762)

Surgery

Controlled release therapeutic device or system

Osmotic or diffusion pumped device or system

C424S422000

Reexamination Certificate

active

06997922

ABSTRACT:
An osmotic delivery system having a space-efficient piston is provided. The enclosure has an interior holding the piston, a beneficial agent, and an osmopolymer including a tablet. The piston is movable with respect to an interior surface of the capsule, and defines a movable seal with the interior surface of the capsule. The movable seal separates the osmopolymer from the beneficial agent. The piston has a recess that receives at least a portion of the osmopolymer. The osmopolymer imbibes liquid from a surrounding environment through a semipermeable body to cause the piston to move and, in turn, cause delivery of the beneficial agent from the capsule.

REFERENCES:
patent: 3732865 (1973-05-01), Higuchi et al.
patent: 3995632 (1976-12-01), Nakano et al.
patent: 4619652 (1986-10-01), Eckenhoff et al.
patent: 4874388 (1989-10-01), Wong et al.
patent: 5062841 (1991-11-01), Siegel
patent: 5221278 (1993-06-01), Linkwitz et al.
patent: 5234424 (1993-08-01), Yum et al.
patent: 5279608 (1994-01-01), Cherif Cheikh
patent: 5318558 (1994-06-01), Linkwitz et al.
patent: 5639477 (1997-06-01), Maruyama et al.
patent: 5728396 (1998-03-01), Peery et al.
patent: 5997527 (1999-12-01), Gumucio et al.
patent: 6270787 (2001-08-01), Ayer
patent: 6283953 (2001-09-01), Ayer et al.
patent: 6287295 (2001-09-01), Chen et al.
patent: 6544252 (2003-04-01), Theeuwes et al.
patent: 2178659 (1987-02-01), None
Theeuwes et al., “Principles of the Design and Operation of Generic Osmotic Pumps for the Delivery of Semisolid or Liquid Drug Formulations”, Annals of Biomedical Engineering 4 (1970), pp. 343-353.
U.S. Appl. No. 08/595,761, Entitled “Sustained Delivery of an Active Agent Using an Implantable System”, 23 pages, without figures or claims.

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