Method of making controlled release devices
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United States of America Patent
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-
Aug 4, 1998
Grant Date -
N/A
app pub date -
Feb 21, 1997
filing date -
Feb 23, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A process is disclosed for making devices which release active material, e.g. a drug, at a controlled rate, which device comprises a closed container and the active material. The device is made by first making a hollow envelope, e.g. by extrusion or moulding, followed by introducing the active material into the void of the envelope. The device may have a ring or cylindrical form.
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