CN202235635U - Movable vertebral column stabilizing system - Google Patents
Movable vertebral column stabilizing system Download PDFInfo
- Publication number
- CN202235635U CN202235635U CN2011203502641U CN201120350264U CN202235635U CN 202235635 U CN202235635 U CN 202235635U CN 2011203502641 U CN2011203502641 U CN 2011203502641U CN 201120350264 U CN201120350264 U CN 201120350264U CN 202235635 U CN202235635 U CN 202235635U
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- spherical
- vertebral column
- branch
- spinal rod
- vertebral
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Abstract
The utility model discloses a movable vertebral column stabilizing system which comprises a vertebral column bar. Both ends of the vertebral column bar are respectively provided with a pedicle screw. The vertebral column bar is formed in a mode that two branch vertebral column bars are butted. One branch vertebral column bar is provided with a spherical head part. The end face of the head part of the one branch vertebral column bar is provided with a spherical groove. The other branch vertebral column bar is also provided with a spherical head part. The end face of the head part of the other branch vertebral column bar is provided with a spherical bump. The spherical bump is arranged in the spherical groove. The spherical bump can rotate in the spherical groove. A connecting sleeve is sleeved at the joint of the two branch vertebral column bars. A spherical clamping groove ring is arranged on the inner wall of the connecting sleeve. Both the spherical head parts of the two branch vertebral column bars are clamped in the spherical clamping groove ring. The two spherical head parts can rotate in the spherical clamping groove ring. The utility model overcomes the defect that a conevntional nail-stick system has a rigid structure and cannot be dynamically bent according to the variation of the physiological curvature of the vertebral body. The movable vertebral column stabilizing system can be widely used for treating the spinal vertebral lesions.
Description
Technical field
This utility model relates to the internal fixation of spine apparatus that uses in the bone surgery, is specifically related to spinal stabilization system.
Background technology
The spinal vertebral pathological changes is puzzlement people's commonly encountered diseases and a frequently-occurring disease, and the main method of treating this kind disease is that the spinal column lesion resection is carried out in operation, carries out column reconstruction then.Usually need on spinal column, use vertebral stabilization system to carry out the vertebral body internal fixation in this operation, vertebral stabilization system be commonly called as nail-stick system.Described nail-stick system comprises: the two ends of spinal rod are respectively arranged with pedicle nail.In the above-mentioned nail-stick system, spinal rod is a perfectly straight barred body, operation fixedly finish the back its can't be along with the variation of the physiologic radian of vertebral body dynamic bending, so the lumbar vertebra of postoperative patient is stiff, limitation of activity, even cause contiguous spinal segments generation pathological changes easily.
The utility model content
Thereby the problem that this utility model need solve provide a kind of can be along with the variation of vertebral body physiologic radian dynamic bending can keep the vertebral foramen space, keep the movable spinal stabilization system of decompression operation effect.
For addressing the above problem, this utility model is realized through following technical scheme.
Movable spinal stabilization system comprises: spinal rod, and the two ends of spinal rod are separately installed with pedicle nail, and described spinal rod is formed by two branch spinal rod butt joints, and wherein a branch spinal rod is provided with spherical head, and head end is provided with ball recess; Also be provided with spherical head on another root branch spinal rod, head end is provided with spherical protrusions; Described spherical protrusions is arranged in the ball recess, and spherical protrusions can be rotated in ball recess; The junction of described two branch spinal rod is set with adapter sleeve; The inwall of described adapter sleeve is provided with spherical draw-in groove circle; The spherical head of described two branch spinal rod all is connected in the spherical draw-in groove circle, and described two spherical head all can be rotated in spherical draw-in groove circle.
The utility model has the advantages that: because spinal rod is formed by two branch spinal rod butt joints, the spherical protrusions of joint can be rotated in ball recess, and on the spinal rod of joint, is set with adapter sleeve; Spherical draw-in groove circle and joint divide the hemisphere clamping mutually of spinal rod on the adapter sleeve inwall, have so both guaranteed that two fens spinal rod can relatively rotate, and have guaranteed that again two fens spinal rod can not throw off; Two sections branch vertebral rods beats have corresponding angle limits again simultaneously, can not cause over-drastic beat, can keep the vertebral foramen space after the use; Quicken vertebral fusion; Still can strut the vertebral foramen height during layback, and limit excessive is crooked, keeps the decompression operation effect.This utility model has overcome that nail-stick system was stiff in the past, can't be according to the variation of vertebral body physiologic radian and the shortcoming of dynamic bending.
Description of drawings
Fig. 1 is the structural representation of the described movable spinal stabilization system of this utility model.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment this utility model is done further to specify.
As shown in Figure 1; Movable spinal stabilization system; Comprise: spinal rod, the two ends of spinal rod are separately installed with pedicle nail 1, and described spinal rod is formed by first fen spinal rod 2 and spinal rod 3 butt joints in second fen; Wherein first fen spinal rod 2 end face of being provided with first spherical head, 21, the first spherical head 21 is provided with ball recess 22; The end face that second fen spinal rod 3 is provided with second spherical head, 31, the second spherical head 31 is provided with spherical protrusions 32; Described spherical protrusions 32 is arranged in the ball recess 22, and spherical protrusions 32 can be rotated in ball recess 22; The junction of described two branch spinal rod is set with adapter sleeve 4; The inwall of described adapter sleeve 4 is provided with spherical draw-in groove circle 41; Described first spherical head 21 and second spherical head 31 all are connected in the spherical draw-in groove circle 41, and described first spherical head 21 and second spherical head 31 all can be rotated in spherical draw-in groove circle 41.
When carrying out the vertebral body internal fixation; Normally nail-stick system vertically is installed in intervertebral; Because spinal rod is formed by first fen spinal rod 2 and spinal rod 3 butt joints in second fen, can be movable relatively between the spherical protrusions 32 on the ball recess 22 on first fen spinal rod 2 and the second fen spinal rod 3, like this when the bending of operation postcentrum; Also can relatively rotate between ball recess 22 and the spherical protrusions 32 with the crooked direction of vertebral body; Rotate in first spherical head 21 and the spherical draw-in groove circle 41 of second spherical head 31 on adapter sleeve 4 simultaneously, adapter sleeve 4 has guaranteed the reliability of spinal rod connection in two fens, and the angle of swing of having controlled two fens spinal rod simultaneously is in required scope.Movable spinal stabilization system like this can be crooked and crooked with vertebral body, and patient then can not feel its vertebral body limitation of activity after surgery.
The utility model has the advantages that: because spinal rod is formed by two branch spinal rod butt joints; The spherical protrusions of joint can be rotated in ball recess; And on the spinal rod of joint, be set with adapter sleeve; Spherical draw-in groove circle and joint divide the spherical head clamping mutually of spinal rod on the adapter sleeve inwall, have so both guaranteed that two fens spinal rod can relatively rotate, and have guaranteed that again two fens spinal rod can not throw off.This utility model has overcome that the nail-stick system structure was stiff in the past, can't be according to the variation of vertebral body physiologic radian and the shortcoming of dynamic bending.Can be widely used in treating the spinal vertebral pathological changes.
Claims (1)
1. movable spinal stabilization system; Comprise: spinal rod, the two ends of spinal rod are separately installed with pedicle nail, it is characterized in that: described spinal rod is formed by two branch spinal rod butt joints; Wherein a branch spinal rod is provided with spherical head, and head end is provided with ball recess; Also be provided with spherical head on another root branch spinal rod, head end is provided with spherical protrusions; Described spherical protrusions is arranged in the ball recess, and spherical protrusions can be rotated in ball recess; The junction of described two branch spinal rod is set with adapter sleeve; The inwall of described adapter sleeve is provided with spherical draw-in groove circle; The spherical head of described two branch spinal rod all is connected in the spherical draw-in groove circle, and described two spherical head all can be rotated in spherical draw-in groove circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203502641U CN202235635U (en) | 2011-09-19 | 2011-09-19 | Movable vertebral column stabilizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203502641U CN202235635U (en) | 2011-09-19 | 2011-09-19 | Movable vertebral column stabilizing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202235635U true CN202235635U (en) | 2012-05-30 |
Family
ID=46096951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203502641U Expired - Lifetime CN202235635U (en) | 2011-09-19 | 2011-09-19 | Movable vertebral column stabilizing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202235635U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106344138A (en) * | 2016-03-07 | 2017-01-25 | 无锡市闻泰百得医疗器械有限公司 | Novel lumbar vertebra arch spondylolysis fixed connecting rod with angles adjustable |
-
2011
- 2011-09-19 CN CN2011203502641U patent/CN202235635U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106344138A (en) * | 2016-03-07 | 2017-01-25 | 无锡市闻泰百得医疗器械有限公司 | Novel lumbar vertebra arch spondylolysis fixed connecting rod with angles adjustable |
| CN106344138B (en) * | 2016-03-07 | 2019-03-01 | 无锡市闻泰百得医疗器械有限公司 | A kind of fixedly adjustable angle pitman of novel lumbar spondylolysis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |