PROBLEM TO BE SOLVED: To provide a power supply apparatus embedded in a living body that can supply power to equipment safely and semipermanently as long as the living body is alive by using movements indispensable to a vital function for power generation.SOLUTION: The power supply apparatus includes the followings as a power supply apparatus embedded in the living body or a secondary power supply for a primary battery 5: a piezoelectric element 2 that is disposed in the proximity of the heart 1 of the living body and generates a charge by using a mechanical stress F due to the beat of the heart 1 a piezoelectric element that is disposed in the proximity of the lung of the living body and generates a charge by using a mechanical stress due to the movements of lung breathing and a charge storage device 3 that stores the charges that are generated in the piezoelectric elements.COPYRIGHT: (C)2012,JPO&INPIT【課題】生体機能に不可欠な動作を発電に利用することにより、生体が生存する限り安全かつ半永久的に機器に電力を供給することができる生体内埋め込み型電源装置を得る。【解決手段】生体の心臓1近傍に配置されて、心臓1の拍動による機械的応力Fによって電荷を発生する圧電素子2、または生体の肺近傍に配置されて、肺呼吸の動作による機械的応力によって電荷を発生する圧電素子と、前記圧電素子で発生した電荷を蓄積する蓄電装置3とを、生体内埋め込み型機器の電源装置または一次バッテリー5の補助電源として備える。【選択図】図1
