Sustained release method and product
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United States of America Patent
Stats
-
Jan 24, 1989
Grant Date -
N/A
app pub date -
Oct 20, 1986
filing date -
Oct 20, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A capsule product and method for gradually releasing a medicament for absorption to a body of a warm blooded animal through the gastrointestinal system. The capsule has a fill material which includes a masticatory substance and a medicament that is dispersed throughout the gum. The medicament is of a type that is effectively and desirably released for absorption by the body through the gastrointestinal tract over an extended period of time. The masticatory substance forms a supporting cohesive matrix for the medicament. The gelatin shell, usually formed from gelatin, water, and a plasticizer, formed around the fill material into a capsule of a size and shape to be readily swallowable. Upon swallowing, the gelatin shell is rapidly dissolved in the gastrointestinal juices, while the fill material is substantially insoluble in the gastrointestinal juices. The matrix having the medicament dispersed throughout is subjected to substantially continuous random motion while contained within the gastrointestinal juices, while at body temperatures, and while under the influence of peristaltic movement for substantially varying the exposed surface area of the fill. As the surface area of the fill material is being changed, the medicament is gradually released from the exposed surface area for an extended period of time for ultimate absorption of the drug by the body.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
| Patent Owner | Address | |
|---|---|---|
| R P SCHERER CORP A DE CORP | Not Provided |
International Classification(s)
Inventor(s)
| Inventor Name | Address | # of filed Patents | Total Citations |
|---|---|---|---|
| Ebert, William R | St. Petersburg, FL | 3 | 176 |
| Hom, Foo S | Safety Harbor, FL | 5 | 324 |
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Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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