http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102688198-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8b203893fdb731946cdf3672524be643 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K9-1647 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61P3-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61P3-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K47-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K47-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K47-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-16 |
| filingDate | 2012-06-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bac2c31e9804ce34b5b399004d4dfbe1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_403995f388566dbfbe84dcb2be1b2bea |
| publicationDate | 2015-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102688198-B |
| titleOfInvention | Polypeptide drug sustained-release microsphere preparation and preparation method thereof |
| abstract | The invention discloses a polypeptide drug sustained-release microsphere preparation and a preparation method thereof. The method comprises the following steps of: dissolving the polylactic acid-glycollic acid copolymer or polylactic acid, a protective agent and a polypeptide drug in an organic solvent to form a completely uniform mixed solution; adding the mixed solution into an oil phase to form emulsion; removing the organic solvent; and performing centrifugal washing and freeze drying to obtain the polypeptide drug sustained-release microsphere. In the invention, an O/O method is adopted, the problem that the drug spreads toward the outer aqueous phase in the multiple-emulsion preparation method is solved, and the drug encapsulation efficiency is improved to 60-95%. The biological active polypeptide drug is degraded in the body and slowly released with the polymer material of the microsphere through the pores on the microsphere surface; the release time can be as long as several weeks and even several months; and the in-vitro release test indicates that the release conforms to similar zero-order release. |
| priorityDate | 2012-06-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 370.