A dosage form (20) for delivering a beneficial drug formulation (26) to an environment of use, comprising:
a) a wall (22) comprising at least in part a composition permeable to the passage of fluid and substantially impermeable to the passage of a drug formulation (26) which wall surrounds and defines;
b) a compartment (25);
c) a dosage amount of a beneficial drug formulation in the compartment; and
d) exit means (23) in the wall of the dosage form that connects compartment (25) with the exterior of the dosage form for delivering the drug formulation (26) from the dosage form;
characterised by
e) means for producing a biologically acceptable gas (27) in the compartment, said means comprising a pharmaceutically acceptable gas release rate controlling means (28);
characterised by
c) a dosage amount of an anti-inflammatory drug selected from an acylcarboxylic acid or enolic acid anti-inflammatory drug in the compartment (25); and by
d) means (27) for producing gaseous carbon dioxide in the compartment, said means comprising a polymeric film (28) surrounding a member selected from a carbonate and bicarbonate.
一种将有益药物制剂(26)输送到使用环境中的剂型(20),包括
a) 壁(22),该壁至少部分由可渗透流体并基本不透过药物制剂(26)的成分组成,该壁包围并限定了药物制剂(26);
b) 隔室(25)
c) 小室中有益药物制剂的剂量;以及
d) 位于剂型壁上的出口装置(23),用于连接隔室(25)和剂型外部,以便将药物制剂 (26)从剂型中输送出来;
其特征是
e) 在隔室中产生
生物可接受气体(27)的装置,所述装置包括药物可接受气体释放速率控制装置(28);
其特征是
d) 在隔室中产生气态
二氧化碳的装置(27),所述装置包括围绕选自
碳酸盐和
碳酸氢盐的构件的聚合物薄膜(28)。