| 摘要 |
PROBLEM TO BE SOLVED: To provide a drug administration method, in which a finely powdered drug can be precisely administered to a target site located within a body cavity via the utilization of a fluidization process and/or a spraying process that uses a gas within a micro tube, specifically, a method for administering a biopolymer, whereby a single drug or a biopolymer, or a drug with a biopolymer as its carrier, can be sprayed. SOLUTION: The method comprises finely milling the drug and/or the biopolymer, fluidizing the powder of the drug and/or the biopolymer with a gas, transporting the fluidized matter in a micro tube 103 by the gas stream, and spraying the fine drug powder from the tip of the micro tube 103 toward the target site. Further, the method comprises concentrically providing a capillary tube in the micro tube 103, supplying an aqueous solution of the drug and/or the biopolymer from the capillary tube into the gas stream, and then mixing it with other fine particles of the drug and/or the biopolymer under transportation by the gas, to be sprayed. COPYRIGHT: (C)2010,JPO&INPIT |
