Method of preparing microspheres for intravascular delivery
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United States of America Patent
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Jan 8, 1985
Grant Date -
N/A
app pub date -
Nov 15, 1983
filing date -
Nov 15, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The field of this invention is the encapsulation of therapeutic or diagnostic substances in minute capsules or spheres from which the substances are slowly released over a prescribed period of time. The general processes for preparing such capsules or spheres include coacervation or a related process by means of which liquid droplets can be encapsulated, and solid phase entrapment in which the water-soluble agent is dispersed in a solid matrix material. The method of this invention can be classified as an improved procedure for matrix encapsulation or entrapment.
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