The present invention is directed to a solid porous matrix comprising a solvent and a surfactant in combination with a bioactive agent. The solvent and the surfactant may, if desired, form vesicles, an agglomeration of which comprises the matrix. The composition optionally comprises a gas or a gaseous precursor. The emulsion may be dried, and subsequently reconstituted in an aqueous or organic solution.
The present invention is also directed to a method of preparing a solid porous matrix comprising combining a solvent, a surfactant, and a therapeutic to form an emulsion; and processing the emulsion by controlled drying, or controlled agitation and controlled drying to form a solid porous matrix. The resulting solid porous matrix may also comprise a gas or gaseous precursor and be added to a resuspending medium.
A method for the controlled delivery of a targeted therapeutic to a region of a patient is another embodiment of the present invention. The method comprises administering to the patient a composition having a solid porous matrix comprising a solvent, a surfactant, a therapeutic, and a gas or gaseous precursor, monitoring the composition using energy to determine the presence of the composition in the region; and releasing the therapeutic from the composition in the region using energy.
本发明涉及一种固体多孔基质,由溶剂和表面活性剂以及
生物活性剂组成。如果需要,溶剂和表面活性剂可以形成囊泡,囊泡的聚集体构成基质。组合物可选择包含气体或气态前体。乳液可以干燥,然后在
水溶液或有机溶液中
重组。
本发明还涉及一种制备固体多孔基质的方法,包括将溶剂、表面活性剂和治疗剂混合形成乳液;并通过控制干燥或控制搅拌和控制干燥处理乳液以形成固体多孔基质。所形成的固体多孔基质还可包含气体或气态前体,并加入到重悬介质中。
本发明的另一个实施方案是一种将靶向治疗药物有控制地输送到患者区域的方法。该方法包括向患者施用具有固体多孔基质的组合物,该固体多孔基质包含溶剂、表面活性剂、治疗剂和气体或气态前体;使用能量监测组合物,以确定该区域存在组合物;以及使用能量从该区域的组合物中释放治疗剂。