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Cervical vertebra pedicle screw fixing device, fixing system and fixing method

A technology of a pedicle screw and a fixing device, applied in the field of medical devices, can solve the problems of high difficulty and high risk of screw placement, and achieve the effects of less difficulty in screw placement, low risk and lower operation costs.

Pending Publication Date: 2019-07-12
晏怡果
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the theoretical feasibility of cervical percutaneous pedicle screw placement technology has been recognized by scholars at home and abroad, but there are still technical problems such as high difficulty and high risk of screw placement

Method used

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  • Cervical vertebra pedicle screw fixing device, fixing system and fixing method
  • Cervical vertebra pedicle screw fixing device, fixing system and fixing method
  • Cervical vertebra pedicle screw fixing device, fixing system and fixing method

Examples

Experimental program
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Effect test

Embodiment 1

[0061] Such as figure 1 with figure 2 As shown, the cervical pedicle screw fixation device provided by the present invention is used to be worn on the screw guide wire, and includes: a connecting part 100, a fixing part 200 and a connecting rod 300; the connecting part 100 is connected with the fixing part 200, The fixing part 200 is used to fix the diseased part, and the connecting rod 300 is used to connect a plurality of connecting parts 100, which can realize percutaneous nail placement in the posterior cervical spine, and can also realize the removal of the above-mentioned fixing device under minimally invasive procedures, reducing the trauma of the patient's reoperation , to reduce the pain and financial burden of patients.

[0062] specific:

[0063] Such as Figure 3 to Figure 6 As shown, the connecting part 100 includes a body 110, a fixing assembly 120 and a locking member 130; the body 110 is provided with a connecting rod groove 111;

[0064] The bottom of the...

Embodiment 2

[0093] In addition, an embodiment of the present invention also provides a cervical pedicle screw fixation system, which includes a hollow puncture positioner, a screw guide pin, a hole reamer, and the cervical pedicle screw fixation device in the first embodiment above;

[0094] The hollow puncture locator is a hollow cylindrical structure, the length of which is preferably about 250mm, which is convenient for electric drill clamping. The outer wall of the hollow puncture locator at the head end 0-5cm is set as a sharp planing structure; There is a cylindrical channel with a diameter of about 0.9mm, which is used to pass the nail guide pin. The nail guide pin is a round rod with a length of 300mm and a diameter of 0.8mm, which matches the cylindrical channel of the puncture locator body.

[0095] The reamer has a T-shaped structure, its head end is a tap structure, and its diameter is set to about 2.0mm. The end of the reamer is a wooden handle, and the interior of the reamer...

Embodiment 3

[0099] An embodiment of the present invention also provides a fixation method according to the above-mentioned two-stage cervical pedicle screw fixation system, the fixation method includes:

[0100] S01, according to the patient's preoperative X-ray, CT, MRI and other related image data, determine the patient's cervical spine surgery segment;

[0101] S02, routine inhalation general anesthesia, routine disinfection and laying sheets;

[0102] S03, using intraoperative CT or 3D C-arm to scan and reconstruct the surgical part of the patient again;

[0103] S04, using the intraoperative navigation system to select a suitable trajectory for nail placement;

[0104] S05, cut the skin and muscle tissue of the nail placement track;

[0105] S06, install the hollow puncture locator on the electric drill, drive the hollow puncture locator into the anterior column of the vertebral body along the nail placement track with the assistance of the navigation system; perform real-time correc...

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Abstract

The invention provides a cervical vertebra pedicle screw fixing device, a fixing system and a fixing method, and relates to the technical field of medical appliances; the cervical vertebra pedicle screw fixing device comprises a connecting part, a fixing part and a connecting rod; the connecting part comprises a body, a fixing assembly and a locking piece; the body is provided with a connecting rod groove and accommodating grooves, the fixing assembly is arranged in the accommodating grooves, and the accommodating grooves penetrate through the body in the axial direction; the locking piece isconnected with the connecting rod groove; the fixing part comprises a screw and a connector, the connector is connected with the head end of the screw, the connector is arranged in the fixing assembly, a pin guide hole penetrating through the screw and the connector in the axial direction is arranged in the screw, and the pin guide hole is communicated with the accommodating groove; the connectingrod is arranged in the connecting rod groove of the connecting part in a penetrating way and is fixed by the locking piece. The device fills up the blank of the screw placement of the pedicle of vertebral arch under the current posterior transpedicular mode of the cervical vertebra, has the advantage of small screw placement difficulty and low risk, and reduces the operation cost and the operation wound of patients.

Description

technical field [0001] The invention relates to the technical field of medical appliances, in particular to a cervical pedicle screw fixation device, a fixation system and a fixation method. Background technique [0002] Cervical degenerative diseases and other related diseases are relatively common in clinical practice. Most patients with relatively simple conditions can be treated by anterior cervical or spinal endoscopic surgery, but there are still some patients who have already experienced instability due to degenerated segments. Or endoscopic surgery can not fully meet the needs of all patients. Usually, patients in such cases are treated by combined anterior-posterior approach or purely posterior approach. However, due to the complex structure of muscles and ligaments related to the posterior approach of the cervical spine, and the wide range of soft tissue stripping such as muscles and fascia in traditional posterior surgery, a large number of patients have intracta...

Claims

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Application Information

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IPC IPC(8): A61B17/70
CPCA61B17/7002A61B17/7071A61B17/7019
Inventor 晏怡果彭文王程
Owner 晏怡果
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