Implantable variable permeability drug infusion techniques

Details Implantable variable permeability drug infusion techniques Implantable variable permeability drug infusion techniques

1996-04-25

1999-02-09

Azpuru, Carlos A.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Implant or insert

6048911, 607 35, A61F 202, A61K 922, A61N 118

Patent

active

058690786

ABSTRACT:
An implantable dispensing device for delivering a treatment agent to a body including a body fluid in which a variable permeability membrane responds to changes in an electro-magnetic parameter in order to vary the rate at which a hygroscopic media increases in volume, thereby controlling the rate of delivery of a treatment agent, such as a drug.

REFERENCES:
patent: 4513034 (1985-04-01), Sparer et al.
patent: 4624847 (1986-11-01), Ayer et al.
patent: 5314458 (1994-05-01), Najafi et al.
patent: 5370672 (1994-12-01), Fowler et al.

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