Screw reinforcing fixing device for osteoporotic patient

Abstract

The invention provides a screw reinforcing fixing device for an osteoporotic patient. The screw reinforcing fixing device comprises a pedicle screw, an expansion fixing sleeve and a head film sleeve. The expansion fixing sleeve comprises an expansion fixing sleeve pipe body, a first expansion piece, a second expansion piece and a third expansion piece, wherein the first expansion piece, the second expansion piece and the third expansion piece are arranged on the head of the expansion fixing sleeve pipe body. The head film sleeve comprises a sealing film sleeve, an upper round rubber fixing ring and a lower round rubber fixing ring, wherein the upper round rubber fixing ring and the lower round rubber fixing ring are arranged on the sealing film sleeve. The first expansion piece, the second expansion piece and the third expansion piece are sleeved with the sealing film sleeve. An upper round groove is sleeved with the upper round rubber fixing ring, a lower round groove is sleeved with the lower round rubber fixing ring, therefore, the expansion fixing sleeve is firmly fixed to the spine, the pedicle screw is also installed more firmly, and the situation that the pedicle screw looses and is not firmly fixed is avoided.

Description

technical field [0001] The invention relates to a screw-reinforced fixing device for patients with osteoporosis. Background technique [0002] Spinal fractures, spinal tumors, cervical spondylosis, cervical spinal stenosis, lumbar disc herniation, lumbar spinal stenosis, lumbar segmental instability, lumbar spondylolisthesis and other diseases are very common clinically. These diseases can cause pain, inability to stand, neck and shoulder pain, low back pain and lower extremity pain and numbness, intermittent claudication, and even clinical symptoms of urinary and sexual dysfunction, which seriously affect the patient's health and quality of life. Treatment of these patients often requires spinal fixation techniques. [0003] In 1959, Boucher et al first applied pedicle screw fixation to the spine. In 1970, clinical cases were reported in France and Switzerland. Since the 1980s, pedicle screw instruments have been widely accepted through continuous improvement. Chi Yonglo...

AI Technical Summary

Problems solved by technology

[0004] With the continuous development of the operation, more and more complications have been found, one of which is that the screw is loose, the fixation is not firm, or the position of the screw is not good for the first time during the operation, and it cannot be adjusted. Difficult, the screw cannot be removed after the bone cement is driven in

Especially for patients with osteoporosis, it is more difficult to adjust the screw, and the holding force of the screw is worse. Once it is misplaced, it is difficult to adjust

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