03948254 is referenced by 339 patents and cites 6 patents.

A drug delivery device for administering a drug at a controlled rate for a prolonged period of time to produce a local or systemic physiological or pharmacological effect is comprised of a wall surrounding a reservoir containing a drug. The reservoir is formed of a solid drug carrier permeable to the passage of the drug. The wall is formed in at least a part of a microporous material the pores of which contain a drug release rate controlling medium also permeable to the passage of the drug, but the rate of passage of the drug through the medium is lower than the rate passage of the drug through the solid drug carrier so that drug release by the medium in the microporous wall is the drug release rate controlling step for releasing drug from the drug delivery device.

Title
Novel drug delivery device
Application Number
42786
Publication Number
3948254
Application Date
August 28, 1974
Publication Date
April 6, 1976
Inventor
Alejandro Zaffaroni
Atherton
CA, US
Agent
Thomas E Ciotti
Edward L Mandell
Paul L Sabatine
Assignee
Alza Corporation
CA, US
IPC
A61M 31/00
A61F 5/46
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