Drug administration method

A method for administering a biopolymer having hemostatic or adhesion preventing functions, comprising the steps of:

• fluidizing fine particles of the biopolymer having hemostatic or adhesive preventing functions with a gas to prepare a homogenous mixed-phase fluid, wherein the biopolymer comprises at least two types of biopolymers, the two types of biopolymers being a combination of an anionic biopolymer and a cationic biopolymer;
• transferring the mixed-phase fluid through at least onc micro-tube by flowing the gas;
• mixing a liquid with the mixed-phase fluid, the liquid being selected from the group consisting of a saline solution, an infusion solution, an aqueous solution of a drug and an aqueous solution of a biopolymer;
• the liquid being injected into the micro-tube thorough at least one inner tube so that the liquid is mixed with the mixed-phase fluid, wherein the inner tube is contained within the micro-tube;
• spraying the mixed liquid and the mixed-phase fluid toward a target sitc from an open tip of the micro-tube;
• wherein the mixed liquid and the mixed-phase fluid become a gel compound after the liquid and the mixed-phase fluid are mixed;
• whereby the fine particles of the biopolymer are capable of being sprayed as a gel compound toward the target site.

A method for administering a biopolymer having hemostatic or adhesion preventing functions, comprising the steps of:

• fluidizing fine particles of the biopolymer selected from the group consisting carboxymethyl celluloses, carboxyethyl celluloses, oxycelluloses, agaroses, chitins, chitosans, hyluronic acids, starches, glycogens, alginates, pectins, dextrans, chondroitin sulfates, gelatins and collagens with a gas to prepare a homogenous mixed-phase fluid;
• transferring the mixed-phase fluid through at least one micro-tube by flowing the gas;
• mixing a liquid with the mixed-phase fluid, the liquid being selected from the group consisting of a saline solution, an infusion solution, an aqueous solution of a drug and an aqueous solution of a biopolymer;
• thc liquid being injected into the micro-tube thorough at least one inner tube so that the liquid is mixed with the mixed-phase fluid, wherein the inner tube is configured to be within the micro-tube;
• spraying the mixed liquid and the mixed-phase fluid toward a target site from an open tip of the micro-tube;
• wherein the mixed liquid and the mixed-phase fluid become a gel compound after the liquid and the mixed-phase fluid are mixed;
• whereby the fine particles of the biopolymer are capable of being sprayed as a gel compound toward the target site to provide a seal upon the target site.