Nonoral preparation having three-layer structure
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United States of America Patent
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Apr 13, 2010
Grant Date -
Aug 21, 2003
app pub date -
May 24, 2001
filing date -
May 26, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The purpose of the present invention is to provide micro- or mili-capsules and film preparations having not only sustained-release function but also targeting and adhesive functions with approximately 100% loading efficiency of the objective substance. The present invention provides a parenteral preparation having three layers structure of; basement layer composed of polymer; carrying layer that contains objective substances selected from drugs, aroma chemicals, mosquito propellant, dyes, cells or antigens; and surface layer, and in which the carrying layer is sandwiched between the basement layer and the surface layer.
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