申请人:Hanna Calvin
公开号:US20100323978A1
公开(公告)日:2010-12-23
The present invention relates to a delivery system for ophthalmic drugs, and more particularly, to a non aqueous oil delivery system. Low concentrations of ophthalmic drugs suspended in an oil vehicle delivery system are as therapeutically effective in man and animals as the corresponding higher concentrations of ophthalmic drugs that are commercially used in aqueous solutions. Eye drops that utilize this nonaqueous oil delivery system, when used in man, are comfortable to use and produce little ocular irritation, have a longer shelf-life, low systemic toxic potential, and only short term blurring of vision. Using this nonaqueous oil delivery system, a single drop of ophthalmic drug with a concentration that is 10 times less than the same drug used in commercially available aqueous eye drops is as effective as the commercially available aqueous ophthalmic eye drops that require many applications to be effective. In addition, utilizing the nonaqueous oil delivery system as eye drops produces no ocular sensation of burning, stinging or excessive tearing that is commonly associated with the commercially available aqueous eye drops. This very dilute ophthalmic drug preparation has a greatly reduced systemic toxicity potential as compared to the commercially used aqueous ophthalmic drops. The vehicle includes castor oil, corn oil, glycerol, mineral oil USP, vegetable oil, white petrolatum USP, and mixtures, there of. The ophthalmic class of drugs includes antimicrobials, miotics, mydriatics, mydriatic-cycloplegics, mydriatic-cycloplegic reversal agents and topical anesthetics.
本发明涉及一种眼科药物递送系统,更具体地说,涉及一种非水油递送系统。低浓度的眼科药物悬浮于油载体递送系统中,在人和动物中具有与商业上使用的含水溶液中对应的更高浓度的眼科药物一样的治疗效果。利用这种非水油递送系统的眼药水,在人类使用时,使用起来舒适,产生少量眼部刺激,具有更长的保质期,低系统毒性潜力,只有短期的视力模糊。使用这种非水油递送系统,一滴眼科药物的浓度比商业上可用的含水眼药水中同一药物的浓度低10倍,但与商业上可用的含水眼药水相比,其效果相同,需要多次使用才能发挥作用。此外,使用非水油递送系统作为眼药水不会产生常见于商业上可用的含水眼药水中的灼烧、刺痛或过度流泪的眼部感觉。这种非常稀释的眼科药物制剂与商业上使用的含水眼药水相比,具有明显降低的系统毒性潜力。该载体包括蓖麻油、玉米油、甘油、USP矿物油、植物油、USP白色凡士林和其混合物。眼科药物类包括抗微生物药、瞳孔收缩剂、瞳孔扩张剂、瞳孔扩张剂-环扩剂、瞳孔扩张剂-环扩剂逆转剂和局部麻醉剂。