PROBLEM TO BE SOLVED: To provide an ultrasonic diagnostic apparatus that can perform the heat radiation of an ultrasonic probe without impairing the operability of the ultrasonic probe by a simple structure.SOLUTION: A receiving heat terminal 31 of a heat radiation unit 3 disposed at the body of an operator is connected with a heat radiation terminal 15 of an ultrasonic probe 1. The heat generated in each of sections in the ultrasonic probe 1 at the diagnosis is conducted from each of heat generation sections to a heat radiation section 32 of the heat radiation unit 3 through a heat transfer member in the ultrasonic probe 1, the heat radiation terminal 15, and the receiving heat terminal 31 of the heat radiation unit 3, and is discharged from the heat radiation section 32 into the atmosphere.COPYRIGHT: (C)2012,JPO&INPIT【課題】簡単な構造で且つ超音波プローブの操作性を損なうことなく超音波プローブの放熱を行うことができる超音波診断装置を提供する。【解決手段】操作者の身体に取り付けられた放熱ユニット3の受熱端子31が超音波プローブ1の放熱端子15に接続され、診断に際して超音波プローブ1内の各部で発生した熱が、各発熱部から超音波プローブ1内の伝熱部材、放熱端子15および放熱ユニット3の受熱端子31を介して放熱ユニット3の放熱部32に伝導され、放熱部32から大気中へ放出される。【選択図】図1