Biliary tract suction curette

Biliary tract suction curette, the curette comprises an outer sheath, a push rod and a curette head, the outer sheath is of a tubular structure which is through up and down; the lower part of the sheath is in threaded connection with a plugging cover; a through hole is formed in the center of the plugging cover; the push rod is of a hollow rod-shaped structure. The upper part of the push rod penetrates through the through hole of the plugging cover and extends into the sheath; the push rod and the sheath are coaxially arranged, the lower portion of the sheath is connected with a negative pressure suction connector, the curette head is connected to the upper end of the push rod and comprises an inner core and four arc-shaped supporting rods, the inner core is coaxially inserted into the push rod, the inner core is of a rod-shaped structure with the hollow interior, and the outer diameter of the inner core is equal to the inner diameter of the push rod. In conclusion, the wall-attached calculus removing device