Patent ID: 8827922

Claim:
An ultrasound endoscope comprising: an insertion portion adapted to be inserted into a subject along an insertion axis; an ultrasound transducer array which is provided at the insertion portion and transmits and receives ultrasound; a first channel opening which is an opening provided at the insertion portion and arranged to be distal or proximal with respect to the ultrasound transducer array; and a first raising base which is arranged inside the first channel opening for adjusting a guiding direction of a treatment instrument guided out of the first channel opening; wherein the first raising base includes: a raising block which guides the treatment instrument, a frame which is provided in a distal end rigid portion of a distal end portion and pivotally supports the raising block, a tube member which extends from a rear of the frame and rotates around an insertion axis to thereby rotate the raising block in a first direction around an axis along the insertion axis, and a wire which is connected to the raising block and causes the raising block to be raised in a second direction around an axis perpendicular to the insertion axis by advancing and retreating in the insertion direction, and wherein the first raising base causes the treatment instrument to be tilted in the first direction and also causes the treatment instrument to be raised in the second direction around the axis perpendicular to the insertion axis.