PROBLEM TO BE SOLVED: To provide a substance supply device capable of being easily handled and capable of continuously supplying a small quantity of a substance into a living body for a long period of time.SOLUTION: A drug solution bag 16 in which a drug solution including a drug as the substance to be supplied is sealed is stored in a storage space 28 within a container 18. The drug solution bag 16 is broken by a bag breaking projection 44 disposed in a movable plate 32 which is a part of the bottom surface of the container 18. A drive liquid is fed into the storage space by a liquid feeder pump mounted outside. The fed drive liquid presses the drug solution bag, so that the drug solution of the same amount as the amount of the drive liquid fed into the container 18 is delivered and supplied to the living body from micro-needles 20.COPYRIGHT: (C)2011,JPO&INPIT【課題】長時間にわたって微量の物質を連続的に生体内に供給可能で、取り扱いやすい物質供給装置を提供する。【解決手段】容器18内の収容空間28に供給物質としての薬剤を含む薬液を封入した薬液袋16を収容する。容器18の底面の一部である移動板32に設けられた破袋突起44により薬液袋16を破る。外部に設けられた送液装置のポンプにより、収容空間内に駆動液体を送り込む。送り込まれた駆動液体が薬液袋を押圧して、容器18に送り込まれた駆動液体と同じ量の薬液が微細針20より送出され、生体に供給される。【選択図】図2