A medical intervertebral distractor with adjustable distraction height

Abstract

The invention discloses a medical intervertebral distractor with adjustable distraction height, which comprises a distraction body and a pushing body, wherein the distraction body comprises an elliptic conical table and an elliptic cylindrical body which are sequentially connected; the distraction body is equally divided into an upper half body a and a lower half body b; the upper half body a andthe lower half body b respectively comprise a semi-elliptic conical table c and a semi-elliptic cylindrical body d which are sequentially connected, and the semi-elliptic cylindrical body d is provided with an inclined hole; the pushing body comprises an engagement block and a pulling rod which are sequentially connected, the engagement block comprises a middle block a and two inclined strips b which are connected with the middle block a, one end of the middle block a, which is far away from the inner side of the engagement block, is connected with one end of the pulling rod, and the inclinedstrips b are respectively inserted into one inclined hole; a guide shaft and a guide hole are respectively arranged on the opposite surfaces of the upper half body a and the lower half body b, and theguide hole is matched with the guide shaft. The medical intervertebral distractor with adjustable distraction height is only convenient to operate, the height adjustment is realized through simple pulling, and the use convenience of the intervertebral distractor is improved.

Description

technical field [0001] The invention relates to the field of medical machinery, in particular to a medical intervertebral distractor with adjustable distraction height. Background technique [0002] Lumbar spondylolisthesis and degenerative lumbar scoliosis are common lumbar diseases. Severe spondylolisthesis, degenerative lumbar scoliosis and other diseases are often accompanied by extremely narrow intervertebral space on one or both sides. During the treatment process, the narrow intervertebral space needs to be enlarged. At present, there is a lack of intervertebral distraction devices in the medical industry, which makes it very difficult to distract the narrow conical space. Therefore, it is necessary to provide people with an intervertebral spacer kit that can conveniently realize the distraction of the narrow intervertebral space. [0003] The prior art CN204169915U discloses a set of intervertebral distractors. After it needs to be embedded in the body, the height ...

AI Technical Summary

Problems solved by technology

Prior art CN206761749U discloses a kind of intervertebral distractor, although the height of its distraction is adjustable, it needs to open a gap with a certain height first, then put it into the gap, and then continuously rotate the threaded sleeve, due to the rotation The way of stretching requires a lot of torque when turning by hand, and the threaded sleeve cannot be twisted smoothly. When external tools such as pliers are used, the wound on the human body is not easy to be too large, so it is impossible to use tools such as pliers to perform the threaded sleeve. reverse

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