The invention discloses a cannula puncture needle for laparoscopic liver resection. The cannula puncture needle comprises a main body, a
handle, a sleeve cylinder, a gas valve, a sleeve
pipe, a thread, an outlet, a puncture needle, a supporting mechanism and a connecting mechanism. The thread is formed at the rear end of the outer
diameter surface of the sleeve
pipe, and the supporting mechanism is mounted on the outer
diameter of the thread. After the puncture needle is inserted into the body of a patient, a knob is rotated and thus a
ball bearing inside a through hole moves on the thread, then the supporting mechanism can move downward, the
skin of the patient is pressed down by a fixing cylinder at the lower end of a connecting rod, a
silicone layer is arranged at the bottom of the fixing cylinder, provides stable support after being contacted and is not easy to slip, a ventilation effect is achieved through a gas port and a venting hole, the fixing effect is good, the connecting mechanism is arranged at a position where the lower end of the
handle and the puncture needle are connected, an
insertion rod in the middle of a rod body is pushed out, and
insertion blocks in two setsof fixing rods can be separated from
insertion slots, and thus a convenient and quick effect is achieved; during installation, the two sets of fixing rods are connected and the insertion rod is inserted directly simply to facilitate the reuse of the
handle.