PROBLEM TO BE SOLVED: To provide a component measurement device and a medical device, securing power normally operating a circuit as thoroughly as possible without using a backup power source even when the internal resistance of a battery has become large.SOLUTION: This component measurement device includes: a measurement part 88 measuring a prescribed component of a body fluid a voice output control part 108 outputting a voice signal indicating at least a measurement value measured in the measurement part 88 to a speaker 58 a power source supplying power to the measurement part 88 and the voice output control part 108 and a voltage detection part 90 detecting a voltage value Vb of the power source. The voice output control part 108 reduces a voltage level L of the voice signal according as the voltage value Vb detected by the voltage detection part 90 is reduced from an initial voltage value of the power source.COPYRIGHT: (C)2013,JPO&INPIT【課題】電池の内部抵抗が大きくなった場合であっても、バックアップ電源を用いることがなく、回路が正常に動作する電力を可及的に確保することができる成分測定装置及び医療機器を提供する。【解決手段】成分測定装置は、体液の所定成分を測定する測定部88と、少なくとも測定部88で測定された測定値を示す音声信号をスピーカ58に出力する音出力制御部108と、測定部88及び音出力制御部108に電力を供給する電源と、電源の電圧値Vbを検出する電圧検出部90とを備え、音出力制御部108は、電圧検出部90が検出した電圧値Vbが電源の初期電圧値から低下するに従って、音声信号の電圧レベルL´を低下させる。【選択図】図7
