Medical forceps

Abstract

The invention relates to medical forceps. The medical forceps comprise a handle, a traction rope, a spring hose, a forceps holder, a push-pull rod, connecting pieces and forceps claws; the spring hoseis connected with the cup holder, the traction rope penetrates through the spring hose and the forceps holder, one end of the traction rope is connected with the handle, and the other end of the traction rope is connected with the push-pull rod; the middles of the two forceps claws are hinged through a hinge shaft, the hinge shaft is installed on the forceps holder, the lower portion of each forceps claw is hinged to one end of the corresponding connecting piece, the other end of each connecting piece is hinged to the push-pull rod, the push-pull rod is provided with two hinge centers for being hinged to the two connecting pieces respectively, and the two connecting pieces are crossed. According to the medical forceps, the push-pull rod adopts a double-hinge central structure, a staggeredfive-connecting-rod mechanism is formed by the forceps claws, the connecting pieces and the push-pull rod, the meshing force of the forceps is improved while it is ensured that the forceps are flexibly pushed, and the efficiency and accuracy of clamping tissue by the biopsy forceps are improved.

Description

technical field [0001] The invention relates to a medical device, in particular to a medical forceps used under an endoscope. Background technique [0002] With the rapid development of endoscopy and other related technologies, and the frequent occurrence of cancer diseases, it is particularly important to use biopsy forceps to sample living tissues under endoscopy, and perform sectioning and pathological analysis. [0003] At present, the biopsy forceps that exist in the field of endoscopic biopsy sampling, whether it is a four-bar or wire hook structure, or other similar structures, often have insufficient occlusal force, resulting in biting tissue and tearing and bleeding when the forceps cup is closed. Follow-up hemostatic treatment is required, which prolongs the operation time and treatment costs, and brings pain to the patient. [0004] In the existing structure, the handle is pushed, and the pushing force is transmitted to the push-pull rod of the pliers head assemb...

AI Technical Summary

Problems solved by technology

[0005] In the existing structure, during the opening and closing process of the pliers cup, since the push-pull rod is a single-hole push-pull rod with only one hinge center, when the pliers cup bites, it is close to the "dead point" position of the four-bar linkage mechanism, and the transmission angle is small, which affects the smooth pushing At the same time, it also greatly reduces the bite force transmitted from the handle to the forceps cup, which directly affects the performance of the biopsy forceps