An anterior cervical orthopedic vertebral distractor

Abstract

The invention discloses a rotary orthopedic centrum expander for anterior cervical vertebra. The expander includes a connecting part, two sliding block sleeves, two orthopedic arms and two centrum pins, wherein the connecting part consists of an arc-shaped sliding rail and a hand-held handle which are connected into a whole part, and the arc-shaped sliding rail is provided with a toothed groove; the two sliding block sleeves are arranged on the front and rear portions of the arc-shaped sliding rail in a sleeving mode respectively, a retraction stopping reed is hinged to each sliding block sleeve, one end of each retraction stopping reed is provided with a retraction stopping hook, and openings are formed in the corresponding positions of the sliding block sleeves and used for the retraction stopping hooks to penetrate to hook the toothed groove in the arc-shaped sliding rail; the upper ends of the orthopedic arms are perpendicularly connected with the two sliding block sleeves respectively, and trepannings are formed in the lower ends of the two orthopedic arms respectively; each centrum pin includes a tip part and a rod part. By using the rotary orthopedic centrum expander for the anterior cervical vertebra, the kyphosis centrum of the cervical vertebra can be rotatably corrected and intervertebral space can be expanded at the same time, so that the difficulty of operations is greatly reduced, and the precision of the operations is improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an anterior cervical rotation orthopedic vertebral body spreader for correcting cervical kyphosis. Background technique [0002] Cervical kyphosis is a type of cervical kyphosis that is caused by a variety of pathological factors. The normal physiological lordosis of the cervical spine disappears and forms a backward curvature deformity, which leads to the destruction of the normal sequence of the cervical spine and causes local and / or nerve stimulation and compression symptoms and signs. disease. Common causes of cervical kyphosis include degenerative, traumatic, developmental, neuromuscular, iatrogenic, and idiopathic. Severe cervical kyphosis often requires surgical correction. The steps of anterior cervical orthopedic surgery include intervertebral space decompression and / or osteotomy, intervertebral space distraction, bone graft fusion and internal fixation. Among...

AI Technical Summary

Problems solved by technology

When the above two methods are used to distract the intervertebral space, the rotational stress acting on the main body is insufficient or even completely absent. For the stiff and angulated cervical kyphosis, the degree of correction is limited due to the rotational stress, and it is difficult to maintain, and even cutting damage to the vertebral body may occur. Severe complications such as bone or device fracture and residual body

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