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公开(公告)号:US5320853A
公开(公告)日:1994-06-14
申请号:US995309
申请日:1992-12-22
申请人: Kazuo Noda , Yoshiyuki Hirakawa , Hiroyuki Yoshino , David D. MacLaren , Paul F. Skultety , John R. Lefler , Greg M. Beck
发明人: Kazuo Noda , Yoshiyuki Hirakawa , Hiroyuki Yoshino , David D. MacLaren , Paul F. Skultety , John R. Lefler , Greg M. Beck
IPC分类号: A61K9/52 , A61K9/50 , A61K9/54 , A61K9/58 , A61K31/554 , A61K47/12 , A61K47/20 , A61P9/12 , A61K9/24
CPC分类号: A61K9/5078
摘要: Controlled release pharmaceutical beads are provided having a multi-layered core and a multi-layered periphery. The core contains at least (A) an inner portion having a suitable organic acid and (B) a sustainably-acid-releasing coating thereover. The periphery contains at least (A) an inner portion having a mixture of at least (i) a pharmaceutical compound and (ii) a surface-active agent, and (B) a sustainably-drug-releasing exterior coating.
摘要翻译: 提供具有多层芯和多层外围的控释药物珠粒。 核心至少包含(A)具有合适的有机酸的内部部分和(B)其上可持续发酸的涂层。 外围至少包含(A)具有至少(i)药物化合物和(ii)表面活性剂的混合物的内部部分,和(B)可持续释放药物的外部涂层。