| 摘要 |
PROBLEM TO BE SOLVED: To provide a drug administration device for surely administering a drug to a desired site to be dosed. SOLUTION: The drug administration device A is equipped with: a drug administration device main body 1 supplied into a celom; a housing chamber 3 provided inside the drug administration device main body 1; a movable wall 5 formed of a permanent magnet and freely movably disposed inside the housing chamber 3; a drug housing chamber 3a which houses an administration drug 8 and is composed of a space surrounded by the inner wall of the housing chamber 3 and the movable wall 5 while the movable wall 5 is moved to one end side of a moving range; a drug administering port 6 provided on the other end side of the moving range of the movable wall 5 in the housing chamber 3 and for communicating the housing chamber 3 with the outside; a sealing plug 7 fitted to the drug administering port 6 in a clearance fit condition; spiral coils 9 and 10 formed on both side walls (the surface 2a of a fixed wall 2 and the inner surface 1a of the drug administration device main body 1) of the moving range of the movable wall 5 in the housing chamber 3 by using the technique of manufacturing a three-dimensional solid circuit board; and an excitation circuit 31 for energizing the coils 9 and 10 in accordance with trigger input and generating electromagnetic force for moving the movable wall 5 to the other end side of the moving range. COPYRIGHT: (C)2008,JPO&INPIT
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