The invention relates to an intracavitary ultrasonic
lithotripsy device. The intracavitary ultrasonic
lithotripsy device comprises an outer lens sheath and a lens body, wherein a rotating sheath and an inner lens sheath are arranged in the outer lens sheath, and the inner lens sheath is sheathed in the rotating sheath in a rotating manner and no
relative displacement in the axial direction is generated between the rotating sheath and the inner lens sheath; a stone
pickup assembly is arranged on one end, away from the lens body, of the inner lens sheath; an opening is formed in the side wall of the stone
pickup assembly and can be covered by a sealing
assembly, an instrument channel tube is arranged in the cavity of the inner lens sheath, a stone breaking assembly is arranged in the instrument channel tube, and a stone breaking end of the stone breaking assembly stretches into the stone
pickup assembly. According to the intracavitary ultrasonic
lithotripsy device, stones can be limited in a sealed space, stone residues cannot enter a
human body when the lithotripsy is carried out, no stone is left after the lithotripsy, the damage to surrounding tissues is little, and the interference caused by the stone chippings with the view of an
endoscope is little, so that the operation efficiency and effect can be remarkably improved, and the pain and burden of a patient are obviously relieved.