03971367 is referenced by 31 patents and cites 8 patents.

An improved intrauterine device which delivers a predetermined therapeutically effective dosage of drug locally to the uterus over a defined period of time is disclosed. The device is initially of a uterine-retentive shape. The device is characterized by undergoing a structural biotransformation in the uterus such that at the completion of the defined period of drug delivery it has achieved a nonuterine-retentive configuration.

Title
Intrauterine device having means for changing from uterine-retentive shape to nonuterine-retentive shape
Application Number
319014
Publication Number
3971367
Application Date
June 4, 1975
Publication Date
July 27, 1976
Inventor
Alejandro Zaffaroni
Atherton
CA, US
Agent
Thomas E Ciotti
Edward L Mandell
Paul L Sabatine
Assignee
Alza Corporation
CA, US
IPC
A61F 5/46
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