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    • 74. 发明专利
    • PREPARATION OF DONOR OF BIODEGRADABLE DRUG
    • JPS6036410A
    • 1985-02-25
    • JP14542883
    • 1983-08-08
    • UNITIKA LTD
    • KIBUNE KOUJI
    • A61K9/18A61K9/20A61K9/22A61K47/36
    • PURPOSE:To provide the titled donor capable of releasing the drug in a living body under controlled condition, by dissolving chitin in a solvent, contacting the obtained dope with a coagulating liquid to obtain swollen chitin, impregnating the swollen chitin with a drug-containing solution, and drying the product. CONSTITUTION:Chitin (poly-N-acetyl-D-glucosamine) is dissolved in a solvent (e.g. trichloroacetic acid), and the obtained dope is charged in a pressure tank and extruded with a gear pump, etc. through a sepcific die into a coagulating liquid (e.g. water, alcohol, ketone, etc.) to obtain a swollen product having the form of rod, ring, sheet, etc. The product is impregnated with a solution containing a drug (e.g. proteinous drug, anti-infective, carcinostatic agent, remedy for ophthalmic diseases, etc.), and dried to obtain the objective donor. When the donor is brought ino contact with a body fluid, it releases the drug slowly over a lont time into the body fluid, and finally the donor itself also disappears. The releasing period can be adjusted.
    • 75. 发明专利
    • Aqueous pharmaceutical preparation
    • 水质制剂
    • JPS59152320A
    • 1984-08-31
    • JP2597983
    • 1983-02-17
    • Takeda Chem Ind Ltd
    • HIRAI SHINICHIROUKINO KUMIKOSHIMIZU HISAYOSHI
    • A61K9/08A61K9/00A61K9/18A61K47/10A61K47/40A61K47/48C08B37/00
    • B82Y5/00A61K9/0014A61K9/0019A61K47/10A61K47/40A61K47/6951C08B37/0015
    • PURPOSE: In an aqueous pharmaceutical preparation containing a main drug and cyclodextrin, the pharmaceutical preparation having the stabilized main drug and improved solubility, containing a specific phenolic derivative as a preservative.
      CONSTITUTION: In an aqueous pharmaceutical preparation containing a main drug and cyclodextrin, the preparation containing a compound shown by the formula (R is alkyl; X is halogen; n is 0W2; m is 0W3). Generally a drug having high hydrophilic nature and low distribution ratio of oil and water has low absorption properties, it is blended with dextrin to improve absorption properties, to stabilize the main drug, and to improve solubility, and it contains a preservative. But some of aqueous pharmaceutical preparation have reduction in preserving effect of the preservative. When the phenolic derivative is used as the preservative, reduction in antimicrobial power, precipitation of insoluble complex, etc. caused by interaction with cyclodextrin are not observed, and reduction in preserving effect will not occur. A concentration of the preservative added is preferably about 0.01W1%(w/v).
      COPYRIGHT: (C)1984,JPO&Japio
    • 目的:在含有主要药物和环糊精的含水药物制剂中,具有稳定的主要药物和改善的溶解性的药物制剂含有特定的酚类衍生物作为防腐剂。 构成:在含有主要药物和环糊精的水性药物制剂中,含有式(R为烷基,X为卤素,n为0〜2,m为0〜3)的化合物的制剂。 通常,具有高亲水性和油水分配比低的药物具有低吸收性能,与糊精混合以改善吸收性能,稳定主要药物,提高溶解性,并含有防腐剂。 但一些水性药物制剂具有降低防腐剂的保存效果。 当酚类衍生物用作防腐剂时,没有观察到由与环糊精相互作用引起的抗菌力降低,不溶性络合物的沉淀等,并且不会发生保存效果的降低。 加入的防腐剂的浓度优选为约0.01-1%(w / v)。