Intervertebral space opening device and use method

A intervertebral space and intervertebral technology, applied in the field of intervertebral space distraction devices, can solve problems such as difficulty in ensuring surgical quality, inconvenient implementation, and loose screws, and achieve the effects of avoiding frontal blood vessel damage, facilitating surgical operations, and preventing excessive insertion

Pending Publication Date: 2017-05-31
SHANDONG PROVINCIAL HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For patients with obvious spondylolisthesis, the intervertebral space needs to be distracted during the operation to restore the spondylolisthesis. The traditional method of distraction is to drive pedicle screws into the pedicles of the two adjacent vertebral bodies respectively. Then, the intervertebral space is enlarged by applying force to the tail of the pedicle screw. In practice, this method tends to cause the intervertebral space to form a narrow wedge at the front and wide at the back, and because of the obstruction of the instrument itself, it is not conducive to observation and subsequent related operations. , it is inconvenient to implement
Lumbar spondylolist...

Method used

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  • Intervertebral space opening device and use method
  • Intervertebral space opening device and use method
  • Intervertebral space opening device and use method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as Figure 1-Figure 7 As shown, a distraction device for the intervertebral space includes an intervertebral insert 1 and a spreader 2. The intervertebral insert 1 includes a body 101, a support portion 103 and a connecting head 104. The spreader 2 includes a pliers head 202 and Pliers handle 201; supporting part 103 is connected to the rear end of sheet body 101, and connecting head 104 is connected on the supporting part 103, and pliers head 202 is provided with the groove 204 that matches with connecting head 104, and groove 204 is used for connecting head 104 connection fixed.

[0038] The connecting head 104 is cylindrical, and the groove 204 on the pliers head is arc-shaped, which facilitates the connection between the connecting head 104 and the groove 204 .

[0039] The sheet body 101 is a high-strength metal sheet with a thickness of 1mm. On the one hand, the operation requires that the thickness of the sheet body 101 does not affect the operation. The b...

Embodiment 2

[0045] A method for using an intervertebral space distraction device, comprising the following steps:

[0046] 1) After anesthesia, take the prone position and expose the spinous process of the spondylolisthesis and facet joints through the posterior median approach;

[0047] 2) Resect the lamina of the slipped vertebral body, expose the dural sac and nerve roots, pull the nerve roots inward for protection, incise the fibrous annulus of the slipped segment, and remove the intervertebral disc tissue;

[0048] 3) Insert the intervertebral insert 1 into the intervertebral space, make the side with the anti-slip protrusion 103 face the vertebra, and clamp the anti-slip protrusion 103 on the vertebra;

[0049] 4) Connect the clamp head 202 of the spreader 2 to the connector 104 of the intervertebral insert 1, and stretch the intervertebral space to the width required for the operation through the spreader 2;

[0050] 5) Bone grafting in the intervertebral space, and a suitable type ...

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Abstract

The invention discloses an intervertebral space opening device and a use method. The device is used for opening an intervertebral space in operations such as lumbar vertebra posterior-path spondylolisthesis reduction and bone graft fusion internal fixation. According to the scheme, the intervertebral space opening device comprises an intervertebral insertion and an opening clamp, the intervertebral insertion comprises an insertion body, a support part and a connector, and the opening clamp comprises a clamp head and a clamp handle; the support part is arranged at the rear end of the insertion body, the connector is arranged on the support part and used for being connected with the clamp head of the opening clamp, and the clamp head is provided with a groove matched with the connector. The intervertebral space opening device can easily and effectively open the intervertebral space, the inner width and the outer width of the opened space are similar, the phenomenon that the opened intervertebral space is narrow in front and wide in back can not occur, the problem that when an interbody fusion cage or a test mold is forcibly placed, end-plate fracture, interbody fusion cage collapse and the like occur is avoided, the operation process is accelerated conveniently for the operation, the operation time is shortened, the operation safety is improved, the success rate is increased, and then pain of patients is relieved.

Description

technical field [0001] The invention relates to the field of orthopedic medical instruments, in particular to an intervertebral space distraction device and a usage method. Background technique [0002] Lumbar spondylolisthesis is one of the more common orthopedic degenerative diseases clinically. It is a common and frequently-occurring disease in orthopedics. It is mostly caused by intervertebral disc degeneration or spondylolisthesis fracture. The most common symptom is pain, which can be manifested as low back pain , Sciatica. In general, the most effective treatment method is posterior lumbar decompression and spondylolisthesis reduction, intervertebral bone graft, fusion and internal fixation. For patients with obvious spondylolisthesis, the intervertebral space needs to be distracted during the operation to restore the spondylolisthesis. The traditional method of distraction is to drive pedicle screws into the pedicles of the two adjacent vertebral bodies respectively...

Claims

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Application Information

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IPC IPC(8): A61B17/02A61B17/56
CPCA61B17/025A61B2017/564A61B2017/0256
Inventor 韩世杰
Owner SHANDONG PROVINCIAL HOSPITAL
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