A spinal nerve distraction device

Abstract

The invention discloses a spinal nerve stretching device, which relates to the technical field of medical equipment, and comprises a main strut, an auxiliary strut, the auxiliary strut is movably installed on the main strut, and is provided with a locking member, the main strut, the auxiliary Nail pins are movable on the struts. It can push away the nerve stably for a long time, maintain a clear surgical field of view, and facilitate the operation.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a spinal nerve distraction device. Background technique [0002] Lumbar disc herniation is one of the more common diseases, mainly because various parts of the lumbar intervertebral disc (nucleus pulposus, annulus fibrosus and cartilage plate), especially the nucleus pulposus, have degenerative changes to varying degrees, and under the action of external forces , the annulus fibrosus of the intervertebral disc ruptures, and the nucleus pulposus tissue protrudes (or protrudes) from the rupture to the rear or in the spinal canal, causing the adjacent spinal nerve roots to be stimulated or compressed, resulting in low back pain, numbness and pain in one or both lower limbs and other clinical symptoms. Lumbar intervertebral disc herniation has the highest incidence rate in lumbar 4-5 and lumbar 5-sacral 1, accounting for about 95%. [0003] In the surgical treatment of lumb...

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Problems solved by technology

[0003] In the surgical treatment of lumbar disc herniation, enter through the patient’s lumbar incision, remove part of the lamina and ligamentum flavum, and expose the dural sac and nerve roots to facilitate surgery. During the operation, the dural sac and nerve roots need to be pushed out to the On one side, to provide the doctor with a clear surgical field of view, it is mainly necessary to temporarily push away the cauda equina and nerve roots in the dural sac. At present, nerve retractors and nerve dissectors are usually used to assist in pushing and keeping them for a certain period of time. However, during the operation Among them, the two instruments that push the nerves need to be supported by the assistant's hands, which affects the surgical field of view of the chief surgeon. At the same time, the correct position of the instruments is easily affected by the operation, and it is difficult to maintain the surgical field of view stably for a long time with manual hand-held instruments, which is not conducive to the operation. conduct

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