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Vertebral pedicle fixator and fixing system

A pedicle and fixator technology, applied in the field of medical instruments, can solve the problems of long operation time, excessive bleeding, and large secondary operation trauma, and achieve the effect of short operation time, less bleeding, and less trauma

Inactive Publication Date: 2016-09-28
深圳市斯玛仪器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is to provide a pedicle fixer and a fixation system, which can solve the problems of large trauma, heavy bleeding and long operation time in the second operation

Method used

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  • Vertebral pedicle fixator and fixing system
  • Vertebral pedicle fixator and fixing system
  • Vertebral pedicle fixator and fixing system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0025] see figure 1 , the first embodiment of the pedicle fixator of the present invention includes: a fixation nail 100 and a fastener 101, wherein the fixation nail 100 includes a nail body 101 and a nail seat 102 located on the nail body;

[0026] The nail seat 102 is provided with at least two nail grooves 106, at least two nail grooves 106 are used to respectively accommodate a fixing bar 113, the nail seat 102 further cooperates with the fastener 101 to fix the fixing bar 113 in the corresponding nail groove 106 .

[0027] Specifically, the pedicle fixator belongs to Class III implantable devices in medical devices. The pedicle fixator is implanted into the human body to maintain the natural physiological curvature and support structure of the diseased spine. Patients who implanted a pedicle fixator in one operation, after a period of time, degeneration of the adjacent intervertebral disc during the fixation stage requires a second operation.

[0028] The traditional ...

no. 2 approach

[0038] Please refer to image 3 and Figure 4 , the second embodiment of the pedicle fixator of the present invention includes: a fixation nail 20 and a fastener 23 / 24, wherein the fixation nail 20 includes a nail body 21 and a nail seat 22 located on the nail body;

[0039] The nail base 22 is provided with two nail grooves 25 / 26, the nail groove 25 / 26 is a U-shaped groove 25 / 26 whose opening is arranged on the top surface of the nail base 22, and the side wall of the U-shaped groove 25 / 26 is provided with an internal thread (not shown in the figure), the fastener 23 / 24 is a plug 23 / 24.

[0040] The fixing rod 27 / 28 is arranged at the bottom of the U-shaped groove 25 / 26 and is pressed and fixed by a plug 23 / 24 matched with the internal thread, and the plug 23 / 24 can be a screw plug or a top screw.

[0041] The same fixed rod 27 / 28 of diameter can be fixed in the two U-shaped grooves 25 / 26, and the fixed rod 27 / 28 of different diameters can also be fixed. The bottom size of ...

no. 3 approach

[0045] see Figure 5 , the third embodiment of the pedicle fixer of the present invention, the difference between the pedicle fixer of this embodiment and the pedicle fixer of the above-mentioned second embodiment is that the nail groove 31 of this embodiment is an opening set in The other parts of the U-shaped groove 31 on the side are similar and will not be repeated here.

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Abstract

The invention discloses a vertebral pedicle fixator. The vertebral pedicle fixator comprises a fixing nail and a fastening piece, wherein the fixing nail comprises a nail body and a nail base positioned on the nail body, the nail base is provided with at least two nail grooves, each of the at least two nail grooves is used for accommodating a fixing bar, and the nail base is further matched with fastening piece to fix the fixing bars in the corresponding nail grooves. The invention further discloses a vertebral pedicle fixing system. With the adoption of the manner, during the secondary operation, the operation of cutting open all the parts of the primary operation is not needed, only a new fixing bar needs to be placed in the at least one vacant nail groove, then the extension of the fixing bar is realized, therefore, the wound caused by the secondary operation is small, the bleeding is tiny, the operation time is short, and the clinical application value is high.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a pedicle fixer and a fixation system. Background technique [0002] With the development of industry, transportation and population aging, spinal trauma and diseases are on the rise year by year. At present, the "thoracolumbar spine fixation system" and "cervical spine fixation system" and other products on the market are implanted with screws in the pedicle of the patient, put rods in the screw slots, and connect the longitudinal screws with rods. The plug is locked so that it effectively forms the support structure of the spine. [0003] However, some patients undergoing spinal internal fixation undergo degeneration of the adjacent intervertebral disc during the fixation stage after a period of time, requiring a second operation. The screw of the fixator currently on the market has only one U-shaped groove. If a second operation is required to extend the fixed part to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/70
CPCA61B17/7035A61B17/7032
Inventor 陈章卫高春正
Owner 深圳市斯玛仪器有限公司
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