A distraction device for lumbar spinous process

Abstract

The invention discloses a distraction device for the spinous process of the lumbar spine, and mainly relates to the field of medical devices. It includes a stretching part and a gripping part. The stretching part includes two stretching units. The gripping part includes a left grip handle and a right grip handle. Slider, connecting rod, a support is provided between the stretching part and the gripping part, a limit plate is provided at the end of the left grip handle far away from the support, and the limit plate is connected to the left side through the fourth hinge shaft. The grip handle is hinged, and a torsion spring is provided on the fourth hinge shaft, one end of the torsion spring is connected with the left grip handle, and the other end is connected with a limit plate, and several locking holes are arranged on the limit plate , the end of the right holding handle away from the support is provided with a wedge-shaped locking block adapted to the locking hole. The beneficial effect of the present invention is that it is easy to operate, and automatically locks while stretching, which can simplify the operation process of medical staff, reduce the burden on the wrists of medical staff, and reduce the pain of patients.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a distraction device for lumbar spinous processes. Background technique [0002] In the treatment of lumbar degenerative diseases, it is often necessary to use distraction instruments to distract the lumbar spinous processes of the adjacent segments of the degenerated intervertebral space before using instruments for resection. Most of the existing lumbar spinous process expansion devices use two opening mouths that can be opened or closed in parallel to open the lumbar spinous processes of adjacent segments. For example, in the existing invention patent with the patent number of 201410392576. A lumbar interspinous process stretching device that can effectively stretch the lumbar spinous processes, expand the lumbar intervertebral space, and at the same time effectively prevent the spinous processes from being loosened from the spreader. However, when the device is used, it is too ...

AI Technical Summary

Problems solved by technology

Most of the existing lumbar spinous process expansion devices use two opening mouths that can be opened or closed in parallel to open the lumbar spinous processes of adjacent segments. For example, in the existing invention patent with the patent number of 201410392576. A lumbar interspinous process stretching device that can effectively stretch the lumbar spinous processes, expand the lumbar intervertebral space, and at the same time effectively prevent the spinous processes from being loosened from the spreader. However, when the device is used, it is too long. The body of the device causes excessive pressure on the wrists of the medical staff, and after the lumbar spinous process is stretched, it needs to be locked manually. During the manual locking process, the wrists of the medical staff need to be kept tightly. The strength of the lower part is relatively large, and the problem of repositioning the stretched lumbar spinous process may also occur. Sometimes it needs to be stretched a second time, which will bring some pain to the patient.

Images