Press rod combination device

Abstract

The invention relates to a combined machine for pressing a rod. The combined machine comprises a pair of rod-pressing pincers, a reset core and a screw-plug holding device, wherein the rod-pressing pincers mainly comprise an upper pincer body and a lower pincer body which are connected through a pin shaft; an inner hole which penetrates front and back is formed; an annular bump is arranged at the front end of the inner hole; screw threads are arranged on the middle part of the inner hole; a spring is arranged behind the pin shaft; the reset core mainly comprises a main body and a head and is provided with an axial through hole; the head can rotate around the axial line of the main body; a groove is formed in the front end of the head; a positioning pin is arranged at the tail end of the head; elastic baffle sheets are arranged on the two sides of the main body; screw threads corresponding to the rod-pressing pincers are arranged on the reset core; the front end of the screw-plug holding device is a head section matched with a screw plug; elastic locking sheets are arranged on the two sides of the screw-plug holding device; the screw-plug holding device is provided with a positioning step; and a groove is formed in the positioning step. A cone body can be quickly and stably lifted at a constant speed by the combined machine, operations, such as lifting, rod pressing, screw plug mounting and screw plug fastening, can be finished at one time, the visual field during surgery is wide, the operation is simpler and more convenient, the surgery is smoother, and the risk of surgery is further reduced.

Description

technical field [0001] The invention relates to a surgical instrument for implantation, in particular to a pressing rod combined instrument. Background technique [0002] In the internal fixation treatment of the spine, the doctor will implant the pedicle screw of the spinal pedicle or vertebral body, and use the surgical instrument frog forceps or rod presser to lift and reset the spondylolisthesis and lift the spine for orthopedic treatment. Reset, or press titanium rods into the U-shaped groove of the pedicle screw to recover the patient's spinal function. It is mainly used for symptoms such as spinal instability, spinal degenerative diseases, spondylolisthesis and scoliosis. [0003] see figure 1 As shown, although the existing frog-type forceps can complete the function of lifting the spondylolisthesis during the operation process and solve the problem of lifting and resetting the spondylolisthesis, in the operation process, the lifting of the spondylosis cone depends ...

AI Technical Summary

Problems solved by technology

[0003] see figure 1 As shown, although the existing frog-type forceps can complete the function of lifting the spondylolisthesis during the operation process and solve the problem of lifting and resetting the spondylolisthesis, in the operation process, the lifting of the spondylosis cone depends entirely on the doctor's discretion. The grip strength is complete, and the process and strength of the lifting cannot be freely controlled. Therefore, there is a high requirement for the doctor to master the strength. The process will be accelerated suddenly, which will cause the lifting process to be too fast and too violent, which will cause damage to the main nerve plexus and nerve roots, resulting in secondary paralysis or partial / partial loss of nerve function, resulting in incomplete or even failure of the operation

[0004] At the same time, after the lifting process is completed, the process of pressing the rod and tightening the screw plug cannot be completed at the same time. The frog-type pliers must be removed to tighten the screw plug, and there will also be situations where the screw plug and the screw are not easy to align , prolonging the operation time

[0005] This shows that the above-mentioned existing frog-type pliers obviously still have inconvenience and defects in structure and use, and need to be further improved urgently.

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