Vertebral plate measuring instrument used for determining grooving position in single-door laminoplasty

Abstract

The invention relates to a vertebral plate measuring instrument used for determining a grooving position in the single-door laminoplasty. The instrument includes a hand shank, a positioning needle andpositioning arms; the hand shank is provided with a slide groove arranged in the axial direction, and a slider is installed in the slide groove and slidingly cooperated with the slide groove; the middle portions of the two positioning arms are hinged through a hinge pin, and the hinge pin is installed on the hand shank; the rear ends of the positioning arms are hinged to connection rods, one endof each connection rod is hinged to the corresponding positioning arm, the other end of each connection rod is hinged to the corresponding slider, the front ends of the positioning arms are provided with palm parts, and operation windows used for grooving are formed in the palm parts; the front end of the positioning needle is provided with a tapered tip and installed on the hand shank and can slide front and back relative to the hand shank. The vertebral plate measuring instrument can rapidly and accurately determine the grooving position, when near to the outside, the instrument avoids the injury of the vertebral artery, and when near to the inside, the instrument avoids the injury of the dural sac and even medulla spinalis. The instrument is rapid and convenient to operate, the groovingdistance can be ensured, and the optimal decompression effect is achieved; the difficulty of a surgery can be reduced, the surgical operation errors are reduced, the surgery quality is improved, andthe learning curves of young surgeons can be shortened.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a lamina measuring instrument used for determining slotting positions in single-door operations. Background technique [0002] It is very important to determine the slotting position in single-door surgery. The slotting position is close to the articular process and is not easy to wear through the lamina, resulting in more bleeding and even damage to the vertebral artery; the slotting position is inward and it is easy to damage the dural sac and even the spinal cord. At present, the surgeon mainly relies on the experience of the surgeon to determine the position of the slot. The operation is difficult, and the learning curve for young surgeons is long. Contents of the invention [0003] The present invention aims to provide a lamina measuring instrument for determining the slotting position in single-door surgery, which can quickly and accurately determine the slott...

AI Technical Summary

Problems solved by technology

At present, the experience of the surgeon is mainly used to judge the slotting position. The operation is difficult, and the learning curve for young surgeons is long.

Images