CN Patent

CN103751112A — 一种雷诺嗪缓释微丸及其制剂形式

Assigned to SHANGHAI SANDY BIOPHARMACEUTICAL CO Ltd · Expires 2014-04-30 · 12y expired

What this patent protects

本发明提供一种雷诺嗪缓释微丸，其具有空白惰性药芯，以及依次包覆其外的药物层、膨胀层以及水不溶性包衣组合物构成的缓释层。所述水不溶性包衣组合物包含水不溶性聚合物，水不溶性聚合物选自乙基纤维素或其水分散体、醋酸纤维素或其水分散体或甲基丙烯酸共聚物。所述膨胀层选自羟丙甲基纤维素、羟丙基纤维素、低取代羟丙甲纤维素、甲基纤维素、羧甲基淀粉钠、羟丙基淀粉。所述空白惰性药芯为商业上购得的粒径为0.6～0.8mm的空白微丸。本发明雷诺嗪缓释微丸可用于制备治疗心绞痛的药物。

USPTO Abstract

本发明提供一种雷诺嗪缓释微丸，其具有空白惰性药芯，以及依次包覆其外的药物层、膨胀层以及水不溶性包衣组合物构成的缓释层。所述水不溶性包衣组合物包含水不溶性聚合物，水不溶性聚合物选自乙基纤维素或其水分散体、醋酸纤维素或其水分散体或甲基丙烯酸共聚物。所述膨胀层选自羟丙甲基纤维素、羟丙基纤维素、低取代羟丙甲纤维素、甲基纤维素、羧甲基淀粉钠、羟丙基淀粉。所述空白惰性药芯为商业上购得的粒径为0.6～0.8mm的空白微丸。本发明雷诺嗪缓释微丸可用于制备治疗心绞痛的药物。

Drugs covered by this patent

Patent Metadata

Patent number
CN103751112A
Jurisdiction
CN
Classification
—
Expires
2014-04-30
Drug substance claim
No
Drug product claim
No
Assignee
SHANGHAI SANDY BIOPHARMACEUTICAL CO Ltd
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

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