Surgery – Respiratory method or device – Ozone or ion generation
Patent
1980-04-28
1981-07-14
Rosenbaum, C. Fred
Surgery
Respiratory method or device
Ozone or ion generation
A61M 700
Patent
active
042780870
ABSTRACT:
An osmotic device is disclosed for delivering an agent to an environment of use. The device comprises (1) a semipermeable wall, surrounding a compartment with a passageway through the wall for delivering an agent from the compartment, and (2) an osmotic system in the compartment comprising a body formed of a polymer having depots consisting of an agent osmotic solute dispersed in the polymer and surrounded individually by a layer of the polymer. In operation, agent is delivered by the device imbibing fluid from the environment through the semipermeable wall into the compartment, with the system imbiding fluid from the compartment into the depots dissolving the solute and filling the depots with solution, thereby causing the depots to form apertures and release agent, with (a) the system delivering the agent at a controlled rate to the compartment and (b) the device delivering the agent from the compartment at a controlled rate through the passageway to the exterior of the device.
REFERENCES:
patent: 4036228 (1977-07-01), Theeuwes
patent: 4177256 (1979-12-01), Michaels et al.
patent: 4217898 (1980-08-01), Theeuwes
ALZA Corporation
Mandell Edward L.
Rosenbaum C. Fred
Sabatine Paul L.
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