PROBLEM TO BE SOLVED: To provide a medical device which can be disposed both horizontally and vertically not requires to secure a setting area wide and in which an inside circuit board hardly influenced by external force.SOLUTION: An ultrasonic observing device 3 has a plurality of circuit parts therein and further has a device body 3A whose contour shape is a rectangular parallelepiped shape, a handle part 39 arranged in one side face which is the upper face in a vertically disposed state of the device body, and two boss parts and a handle part 39 arranged in one side face which is the lower face in the vertically disposed state of the device body 3A. In the device body 3A, the circuit boards included in the plurality of circuit parts is fixed to the inside chassis 63A fixed to the device body, and at least two circuit parts heavier than the other circuit parts of the plurality of circuit parts arranged symmetrically relative to a face in a vertical direction passing through the center part of the device body 3A in the vertically disposed state of the device body 3A.COPYRIGHT: (C)2010,JPO&INPIT【課題】縦置きと横置きの両方が可能で、設置領域を広く確保する必要のなく、かつ内部回路基板が外力の影響を受けにくい医療用装置を実現する。【解決手段】超音波観測装置3は、複数の回路部を内部に有し、外形形状が略直方体の装置本体3Aと、装置本体の縦置き状態において上面となる一側面に設けられたハンドル部39と、装置本体3Aの縦置き状態において下面となる一側面に設けられた2つの突出部とハンドル部39を有する。装置本体3A内において、複数の回路部に含まれる回路基板は、装置本体に固定された内部シャーシ63Aに固定され、かつ、複数の回路部のうち、他の回路部よりも重い少なくとも2つの回路部は、装置本体3Aの縦置き状態において装置本体3Aの中央部を通る鉛直方向の面に対して、対称的に配置されている。【選択図】図19
