The invention provides a loop
ligature device capable of being repeatedly used. The loop
ligature device comprises a shell, a negative pressure suction pump, a storage battery, a sucker, a
straw, a push ring, a push rod, a
storage tank and a trigger, wherein the front end of the
storage tank is provided with a connector, the front end of the
straw is communicated with the sucker, and the rear end of the
straw is detachably inserted into a cylinder-shaped cavity, so that the straw is communicated with the
storage tank. The loop
ligature device is characterized in that an opening of the cylinder-shaped cavity on the connector is exposed to the outside, so that a user can replace the straw and the push rod conveniently, and the repeated use of the loop ligature device is realized. According to the loop ligature device provided by the invention, the connector connected with the straw is exposed to the outside, and a push block for driving the push rod is exposed to the outside, so that the straw and the push rod can be conveniently assembled and disassembled, the defect that the connector and the push block can not be seen clearly if being arranged inside the shell is overcome, further, the medical workers can conveniently use the loop ligature device, the medical cost is reduced, the materials are saved, the environment-protecting and energy-saving effects are good, the beneficial effects are obvious, and thus the application and promotion are easy.