Osmotically driven fluid dispenser

Details Osmotically driven fluid dispenser Osmotically driven fluid dispenser

1980-12-08

1982-03-23

Rosenbaum, C. Fred

Surgery

Respiratory method or device

Ozone or ion generation

A61M 700

Patent

active

043207588

ABSTRACT:
An improved version of an osmotically driven mini-osmotic pump that is used to administer drug solutions. The basic components of the improved pump are: an inner flexible bag that holds the drug solution; a plug having a recessed inner end that seals the bag opening; a solution filling/discharge port through the plug; a cup-shaped, thermo-formed sleeve that fits partly about the bag and is made from a dispersion of an osmotically effective solute in a water soluble, theroplastic polymer vehicle; a shape-retaining, semipermeable membrane that encapulates the bag-sleeve subassembly; and a flow moderator that is received through the filling/discharge port in the plug.

REFERENCES:
patent: 3732865 (1973-09-01), Higuchi et al.
patent: 3760805 (1973-09-01), Higuchi
patent: 3987790 (1976-10-01), Eckenhoff et al.
patent: 3995631 (1976-12-01), Higuchi et al.
patent: 4034756 (1977-07-01), Higuchi et al.
Cimmino et al., Polymer, 19:1079-1082 (1978).
Union Carbide Corp., "Polyox.RTM., Water-Soluble Resins are Unique", 1973.

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