ULTRASONIC PROBE

PROBLEM TO BE SOLVED: To provide an ultrasonic probe which can secure appropriate mechanical strength of a base end side of a sheath and appropriate flexibility at the same time.SOLUTION: An ultrasonic probe includes: a sheath which has an end and a base end and whose end side is closed; an ultrasonic vibrator provided inside on the end side of the sheath; and a tube which covers an outer surface of the base end side of a reference position of the sheath in the case that the position displaced to the base end side from the end of the sheath is a reference position. The tube has: a first fixed part which is provided for a tip area of the tube positioned on the reference position side and fixed onto the outer surface of the sheath; a second fixed part which is provided for a base end area of the tube covering the base end side of the sheath and is fixed onto the outer surface of the sheath; and a relatively movable part relatively movable to the outer surface of the sheath between the first fixed part and the second fixed part.SELECTED DRAWING: Figure 3 【課題】シースの基端側の適度な機械的強度の確保と適度な可撓性の確保とを両立できる超音波プローブを提供する。【解決手段】先端と基端とを有し且つ先端側が閉塞されているシースと、シースの先端側の内部に設けられた超音波振動子と、シースの先端より基端側にずれた位置を基準位置とした場合、シースの基準位置よりも基端側の外面を覆うチューブと、を備え、チューブは、基準位置側に位置するチューブの先端領域に設けられ、シースの外面に固定される第１固定部と、シースの基端側を覆うチューブの基端領域に設けられ、シースの外面に固定される第２固定部と、第１固定部と第２固定部との間でシースの外面に対して相対移動可能な相対移動可能部と、を有する。【選択図】図３