| 摘要 |
PROBLEM TO BE SOLVED: To provide an implant for dosage of an effective substance, e.g. minor minerals necessary for health physiological functions.SOLUTION: An implant (60) using a porous silicon is impregnated with an effective substance, e.g. minor minerals necessary for health physiological functions, and grafted in the subcutaneous to allow complete corrosion over several months and/or years for controlled release of the minor minerals. In a second embodiment, an implant (62) is a reservoir type porous implant which contains an effective substance and includes a large number of holes (72) closed with biological erosive doors (76 and 78) different in thickness so as to yield a time difference in long-time release of the effective substance after breaks of the doors. |
