| 摘要 |
<p>PURPOSE:A remedying tool obtained by impregnating an oily drug into magnetic pieces in such a way that they have voids to be communicated with the outside and the inside of the pieces by the use of ferrite iron or a rare earth element. CONSTITUTION:Ferrite iron powder or rare earth element powder is uniformly blended with paste to be gasified at a high temperature, and molded under pressure, to give magnetic pieces having a large number of voids to be communi cated with the outside and the inside of the pieces, and >=2% (preferably >=5%) void ratio. The voids of the magnetic pieces are impregnated with an oily drug which is regulated in such a way that a volatilization amount is 0.5-1%/hr at 35 deg.C, to give a remedying tool. EFFECT:A void ratio can be easily selected by changing a blending ratio of a material, and uniform blending provides voids uniform in the whole magnetic pieces without requiring high technology. Consequently, a volatilization amount of an active ingredient has small variability, and is constant, so the title tool is safe.</p> |
