Laminate device for controlled and prolonged release of substances to an ambient environment
申请人:PFIZER INC.
公开号:EP0153070A2
公开(公告)日:1985-08-28
Laminate device for the controlled and prolonged release of at least one active agent to an ambient environment comprising at least one core sheet, said core sheet or sheets comprising said agent or agents in a polymer matrix, and, in a preferred embodiment, a porosity enhancing agent in admixture with said agent; said core sheet or sheets be:ng alternately sandwiched or interposed between coextensive inert polymeric films substantially impermeable to said environment and to said agent or agents, said device being perforated by one or a plurality of macroholes extending through said sheets and said films. In a modification of said device the perimeter edge thereof is coated by an inert polymeric film substantially impermeable to said environment and to said agent or agents. Also included are methods for making such a device.
用于控制和延长向周围环境释放至少一种活性剂的层压装置,该装置包括至少一个芯片,所述芯片包括聚合物基质中的所述一种或多种制剂,在一个优选的实施方案中,还包括与所述制剂混合的孔隙度增强剂;所述芯片交替地夹在或插在基本上不渗透所述环境和所述一种或多种制剂的同层惰性聚合物薄膜之间:ng 交替夹在或插在惰性聚合薄膜之间,这些薄膜对环境和制剂具有很好的防渗透性,所述装置上有一个或多个大孔穿过所述薄片和薄膜。在所述装置的一种改型中,其周边边缘涂有一层惰性聚合薄膜,该薄膜对所述环境和所述一种或多种药剂基本上是不渗透的。还包括制造这种装置的方法。