PROBLEM TO BE SOLVED: To provide a medical fluid administration device capable of being enhanced in its users convenience.SOLUTION: The medical fluid administration device is a portable medical fluid administration device held on a living body, and includes a medical fluid storage portion 110 for storing a medical fluid, an pressing portion 140 for oppressing a medical fluid bag 110 and a feeding portion 130 for externally feeding the medical fluid stored in the medical fluid bag 110. The medical fluid storage portion 110 is made of a sheet-shaped member, and has a bottom surface part and an upper surface part having a predetermined area, and formed as a bottom surface and an upper surface of the medical fluid storage portion 110 formed by folding the sheet-shaped member, and a side surface part provided between the bottom surface part and the upper surface part to be respectively connected to the respective edges of the bottom and upper surface parts, and formed into a shape folded back odd number of times at least three times in the overlapped direction of the bottom and upper surface parts.COPYRIGHT: (C)2013,JPO&INPIT【課題】使い勝手を向上し得る薬液投与装置を提供する。【解決手段】生体に保持される携帯型の薬液投与装置であって、薬液を貯蔵する薬液貯蔵部110と、薬液パックを110圧迫する圧迫部140と、薬液パック110に貯蔵される薬液を外部に送出する送出部130とを有し、薬液貯蔵部110は、シート状の部材でなり、所定の面積を有し、折りたたむことにより形成される薬液貯蔵部110の底面及び上面となる底面部及び上面部と、底面部と上面部の間であってそれぞれの縁に接続され、底面部及び上面部と重なる方向に少なくとも3回以上の奇数回折り返された形状でなる側面部とを有する。【選択図】図3
