CN101601601B - Dynamic spinal internal fixation system - Google Patents
Dynamic spinal internal fixation system Download PDFInfo
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- CN101601601B CN101601601B CN2009100318085A CN200910031808A CN101601601B CN 101601601 B CN101601601 B CN 101601601B CN 2009100318085 A CN2009100318085 A CN 2009100318085A CN 200910031808 A CN200910031808 A CN 200910031808A CN 101601601 B CN101601601 B CN 101601601B
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Abstract
The invention relates to a dynamic spinal internal fixation system, belonging to the technical field of medical apparatus and instruments in spinal surgery; the dynamic spinal internal fixation system is composed of a connecting rod, a U-shaped pedicle of vertebral arch nail, a locking screw, a ball joint pedicle of vertebral arch nail, and a limit screw; wherein one end of the connecting rod is provided with a long-waist connecting block, a long-waist through hole is arranged in the long-waist connecting block, a long-waist spherical hole is arranged at the lower part of the long-waist through hole; the ball joint pedicle of vertebral arch nail is arranged in the long-waist spherical hole of the connecting rod and can slide in the hole, the limit screw is connected with a screwed hole limit in the head part of the ball joint pedicle of vertebral arch nail by the long-waist through hole of the connecting rod, the connecting rod is arranged on a U-shaped groove of a plurality of the U-shaped pedicle of vertebral arch nails and is pressed by the locking screw, and leads the U-shaped pedicle of vertebral arch nail and the ball joint pedicle of vertebral arch nail to be connected, thereby forming a dynamic spinal pedicle group of vertebral arch nails, and two dynamic spinal pedicle groups of the vertebral arch nails form the dynamic spinal internal fixation system.
Description
Technical field
The present invention relates to a kind of dynamic spinal internal fixation system, belong to the spinal surgery technical field of medical instruments.
Background technology
Development along with basic medical, related discipline and industrial technology, many basic conceptions of field of spinal surgery, diagnostic criteria, treatment theory and Therapeutic Method are constantly perfect, spinal surgery diagnoses and treatment level is constantly progressive, has occurred multiple spinal internal fixation system on the market.The pedicle nail technology occurs using in the eighties in last century and treat various spinal diseases, begin to use the fusion device system nineties, the principle of these spinal internal fixation systems all is a spinal fusion techniques, promptly the vertebral body of pathological changes is the center, its one or two vertebral body that closes on is merged, and then becoming as a whole, spinal fusion remains the main Therapeutic Method of treatment vertebra degenerated unstability at present.The advantage of this fusion technology is: the fusion of lesion segment bone, eliminate unstability, alleviating pain.Shortcoming is: the adjacent segment regression increases the weight of, and the conversion syndrome occurs, and may influence the part physiological function.
For the height of keeping intervertebral space, keep the stable of spinal column, at utmost recover the function of spinal column, since nineteen ninety in Europe and part Asian countries adopt the non-fusion of various lumbar vertebras, as artificial intervertebral disk, artificial nucleus and X2 St op, Graf and Dynesys spinal column way of escape elastic force fixed system etc.The spinal stability reconstruction technique is for youngster, athlete and patient that the multi-segmental regression is arranged, fusion obviously is unaccommodated, but not fusion will become ideal selection, because this technology can provide normal heavy burden pattern, change spinal segments motor pattern and load transfer mode, recover normal vertebral height of spinal column and intersegmental mobility.
Summary of the invention
The objective of the invention is provides a kind of dynamic spinal internal fixation system at above-mentioned weak point, can provide the normal stability of spinal column can keep mobility between vertebral body again, normal heavy burden pattern between the vertebral body is provided, change spinal segments motor pattern and load transfer mode, recover normal vertebral height of spinal column and intersegmental mobility, alleviate the risk of adjacent vertebral bodies regression in the operation, avoid the concurrent syndrome in the fusion.
Dynamic spinal internal fixation system is to take following technical scheme to realize:
Dynamic spinal internal fixation system is made up of pitman, U type pedicle nail, lock-screw, bulb pedicle nail, stop screw; Wherein pitman one end is provided with long waist type contiguous block, is provided with a long waist typed through hole in the long waist type contiguous block, and long waist typed through hole bottom is provided with a long waist type spherical pore; The bulb pedicle nail is installed in the long waist type spherical pore of pitman, and can slide in this hole, adopts stop screw spacing by the screwed hole in the long waist typed through hole connection bulb pedicle nail head of pitman; U type pedicle screw is provided with a U type groove that can hold pitman, pitman is installed on the U type groove of several U type pedicle nails, compress by lock-screw, and U type pedicle nail and bulb pedicle nail linked together, constituted dynamic spinal pedicle nail group, two groups of dynamic spinal pedicle nail groups are installed in respectively on the pedicle of vertebral arch of spinal vertebral spinous process both sides, form whole dynamic spinal internal fixation system.
Described pitman cross section is cylindrical, waist shape or square.
Described bulb pedicle nail head is a hemispherical, is provided with a hexagon ring or plum blossom hole in the bulb pedicle of vertebral arch head, is provided with one section screwed hole below the hole, and bulb pedicle nail afterbody is provided with one section bone thread.
Described U type pedicle screw adopts unidirectional pedicle nail or universal pedicle nail.
Described unidirectional U type pedicle nail, its bone thread afterbody can not move in its head axle center relatively, unidirectional U type pedicle nail is provided with a U type groove that can hold pitman, U type groove top is provided with one section screw thread, this screw thread cooperates with lock-screw, be used for pitman is pressed on U type groove, unidirectional U type pedicle nail afterbody is provided with one section bone thread.
Described universal U type pedicle nail, its bone thread afterbody can become 0 °～40 ° angle in its head axle center relatively, universal U type pedicle nail is by universal cover, intermediate and button are formed, it is to cooperate realization by button with sphere between the universal cover that its angle changes, intermediate is used to connect button and universal cover, universally be arranged with a U type groove that can hold pitman, U type groove top is provided with one section screw thread, this screw thread cooperates with lock-screw, be used for pitman is pressed on U type groove, the button afterbody is provided with one section bone thread.
Described lock-screw is cylindrical, and its cylindrical is provided with the external screw thread that matches with U type pedicle nail, and its cross section is provided with the hole that is used for the rotational lock screw, and the shaped design in its hole is hexagon, octagonal, quincunx or square.
Described dynamic spinal pedicle nail group has two U type pedicle nails at least for every group.
Described two groups of dynamic spinal pedicle of vertebral arch groups link together by horizontal connecting rod and horizontal butt hook, described horizontal butt hook top is provided with the through hole that holds horizontal connecting rod, the top is provided with a screw, laterally the butt hook bottom is provided with the hook groove that holds pitman, and the screw nail compresses horizontal connecting rod and pitman by the screw at horizontal butt hook top.
Described horizontal butt hook profile is cylindrical, waist shape or square; Described screw nail cylindrical is provided with the full thread that matches with horizontal butt hook top screw, and screw nail center is provided with the hole that is used to rotate the screw nail, and it is shaped as square, hexagon, octagonal or quincunx; Described horizontal connecting rod cross section is cylindrical, waist shape or square.
Operation principle: when this dynamic spinal internal fixation system uses, two groups of dynamic spinal pedicle nail groups are installed in respectively in the both sides pedicle of vertebral arch of vertebra that the patient damages and adjacent vertebrae, earlier in the pedicle of vertebral arch of a vertebral body that the implantation of U type pedicle nail is damaged and an adjacent pleurocentrum, again on the pedicle of vertebral arch of the opposite side vertebral body that the vertebral body that the implantation of ball-type pedicle nail is damaged is adjacent, then pitman is installed on U type pedicle nail and the ball-type pedicle nail, by lock-screw locking pitman and U type pedicle nail, and movable in certain limit in the long waist type spherical pore of pitman, thereby reach dynamic fixing function of the present invention by stop screw restriction ball-type pedicle nail hemispherical nose.Two groups of dynamic spinal pedicle of vertebral arch groups can link together stability when being used to improve the dynamic spinal internal fixation system use by horizontal connecting rod and horizontal butt hook.
Dynamic spinal internal fixation system is reasonable in design, simple in structure, use this system, can provide normal heavy burden pattern between the vertebral body by the activity between pitman and bulb pedicle nail, change spinal segments motor pattern and load transfer mode, recover normal vertebral height of spinal column and intersegmental mobility, alleviate the risk of adjacent vertebral bodies regression in the operation, avoid the concurrent syndrome in the fusion.And this dynamic spinal internal fixation system production and processing is simple, and clinical manipulation is convenient, can replace the pattern of fusion spinal internal fixation system, reaches better clinical therapeutic efficacy.
Description of drawings
The invention will be further described below with reference to accompanying drawing:
Fig. 1 is dynamic spinal internal fixation system structure and user mode sketch map.
Fig. 2 is the A-A cutaway view of dynamic spinal internal fixation system.
Fig. 3 is the pitman structural representation of dynamic spinal internal fixation system.
Fig. 4 is the pitman partial structurtes B-B cutaway view of dynamic spinal internal fixation system.
Fig. 5 is the unidirectional U type pedicle nail sketch map of dynamic spinal internal fixation system.
Fig. 6 is the universal U type pedicle nail sketch map of dynamic spinal internal fixation system.
Fig. 7 is the ball-type pedicle nail sketch map of dynamic spinal internal fixation system.
Fig. 8 is the lock-screw sketch map of dynamic spinal internal fixation system.
Fig. 9 is the stop screw sketch map of dynamic spinal internal fixation system.
Figure 10 is horizontal butt hook of the present invention and horizontal connecting rod sketch map.
The specific embodiment
With reference to accompanying drawing 1～10, dynamic spinal internal fixation system is by pitman 3, U type pedicle nail 7, lock-screw 8, bulb pedicle nail 1, stop screw 2 compositions such as grade.Wherein, pitman 3 one ends are provided with long waist type contiguous block 3-1, are provided with a long waist typed through hole 3-2 among the long waist type contiguous block 3-1, and long waist typed through hole bottom is provided with a long waist type spherical pore 3-3, and pitman 3 cross section 3-4 are cylindrical, waist shape or square; Bulb pedicle nail 1 head is hemispherical 1-2, be provided with a hexagon ring or plum blossom hole 1-4 in bulb pedicle of vertebral arch 1 head, be provided with one section screwed hole 1-3 below the hole, bulb pedicle nail afterbody 1-1 is provided with one section bone thread, bulb pedicle nail 1 is installed in the long waist type spherical pore 3-3 of pitman 3, and can in this hole, slide, adopt stop screw 2 spacing by the screwed hole 1-3 in long waist typed through hole 3-3 connection bulb pedicle nail 1 head of pitman 3.U type pedicle screw 7 is provided with a U type groove that can hold pitman 3, and pitman is installed on the U type groove of several U type pedicle nails 7.
Described U type pedicle screw 7 adopts unidirectional pedicle nail 7-1 or universal pedicle nail 7-2.
Described unidirectional U type pedicle nail 7-1, its bone thread afterbody 7-1-3 can not move in its head axle center relatively, unidirectional U type pedicle nail 7-1 is provided with a U type groove 7-1-2 that can hold pitman 3, U type groove 7-1-2 top is provided with one section screw thread 7-1-1, this screw thread 7-1-1 can cooperate with lock-screw 8, be used for pitman 1 is pressed on U type groove 7-1-2, unidirectional U type pedicle nail 7-1 afterbody is provided with one section with the same bone thread 7-1-3 of bulb pedicle of vertebral arch 1 afterbody.
Described universal U type pedicle nail 7-2, its bone thread 7-2-3 afterbody can become 0 °～40 ° angle in its head axle center relatively, universal U type pedicle nail 7-2 is by universal cover 7-2-4, intermediate 7-2-5 and button 7-2-6 form, it is to cooperate realization by button 7-2-6 with sphere 7-2-7 between the universal 7-2-4 of overlapping that its angle changes, intermediate 7-2-5 is used to connect button 7-2-6 and universal cover 7-2-4, universal cover 7-2-4 is provided with a U type groove 7-2-2 that can hold pitman 3, U type groove 7-2-2 top is provided with one section screw thread 7-2-1, this screw thread 7-2-1 can cooperate with lock-screw 8, be used for pitman 1 is pressed on U type groove 7-2-2, button 7-2-6 afterbody is provided with one section with the same bone thread 7-2-3 of bulb pedicle of vertebral arch 1 afterbody.
Described lock-screw 8 is cylindrical, and its cylindrical is provided with the external screw thread 8-2 that matches with U type pedicle nail, and its cross section is provided with the hole 8-1 that is used for the rotational lock screw, its hole be shaped as hexagon, octagonal, quincunx or square.
Pitman 3 is installed on the U type groove of several U type pedicle nails 7, compress by lock-screw 8, and U type pedicle nail 7 and bulb pedicle nail 1 linked together, constituted dynamic spinal pedicle nail group, dynamic spinal pedicle nail group has two U type pedicle nails 7 at least for every group, two groups of dynamic spinal pedicle nail groups are installed in respectively on the pedicle of vertebral arch of spinal vertebral spinous process both sides, form whole dynamic spinal internal fixation system.
Described two groups of dynamic spinal pedicle of vertebral arch groups can link together by horizontal connecting rod 6 and horizontal butt hook 4, to reach better stablizing effect.Described horizontal butt hook 4 tops are provided with the through hole 4-3 that holds horizontal connecting rod 6, the top is provided with a screw 4-1, laterally butt hook 4 bottoms are provided with the hook groove 4-2 that holds pitman 3, and the screw nail 5 screw 4-1 by horizontal butt hook 4 tops compress horizontal connecting rod 6 and pitman 3.Described horizontal butt hook 6 profiles are cylindrical, waist shape or square.Described screw is followed closely 5 cylindricals and is provided with the full thread that matches with horizontal butt hook 4 top screw 4-1, and screw 5 centers of following closely are provided with the hole 5-1 that is used to rotate screw nail 5, and it is shaped as square, hexagon, octagonal or quincunx.Described horizontal connecting rod 6 cross section 6-1 are cylindrical, waist shape or square.
Claims (10)
1. a dynamic spinal internal fixation system is characterized in that being made up of pitman, U type pedicle nail, lock-screw, bulb pedicle nail, stop screw; Wherein pitman one end is provided with long waist type contiguous block, is provided with a long waist typed through hole in the long waist type contiguous block, and long waist typed through hole bottom is provided with a long waist type spherical pore; The bulb pedicle nail is installed in the long waist type spherical pore of pitman, and can slide in this hole, adopts stop screw spacing by the screwed hole in the long waist typed through hole connection bulb pedicle nail head of pitman; U type pedicle nail is provided with a U type groove that can hold pitman, pitman is installed on the U type groove of several U type pedicle nails, compress by lock-screw, and U type pedicle nail and bulb pedicle nail linked together, constituted dynamic spinal pedicle nail group, two groups of dynamic spinal pedicle nail groups are formed whole dynamic spinal internal fixation system.
2. dynamic spinal internal fixation system according to claim 1 is characterized in that described pitman cross section is cylindrical, waist shape or square.
3. dynamic spinal internal fixation system according to claim 1, it is characterized in that described bulb pedicle nail head is a hemispherical, be provided with a hexagon ring or plum blossom hole in the bulb pedicle nail head, be provided with one section screwed hole below the hole, bulb pedicle nail afterbody is provided with one section bone thread.
4. dynamic spinal internal fixation system according to claim 1 is characterized in that described U type pedicle screw adopts unidirectional pedicle nail or universal pedicle nail.
5. dynamic spinal internal fixation system according to claim 4, it is characterized in that described unidirectional U type pedicle nail, its bone thread afterbody can not move in its head axle center relatively, unidirectional U type pedicle nail is provided with a U type groove that can hold pitman, U type groove top is provided with one section screw thread, this screw thread cooperates with lock-screw, is used for pitman is pressed on U type groove, and unidirectional U type pedicle nail afterbody is provided with one section bone thread.
6. dynamic spinal internal fixation system according to claim 4, it is characterized in that described universal U type pedicle nail, its bone thread afterbody can become 0 °～40 ° angle in its head axle center relatively, universal U type pedicle nail is by universal cover, intermediate and button are formed, it is to cooperate realization by button with sphere between the universal cover that its angle changes, intermediate is used to connect button and universal cover, universally be arranged with a U type groove that can hold pitman, U type groove top is provided with one section screw thread, this screw thread cooperates with lock-screw, is used for pitman is pressed on U type groove, and the button afterbody is provided with one section bone thread.
7. dynamic spinal internal fixation system according to claim 1, it is characterized in that described lock-screw is cylindrical, its cylindrical is provided with the external screw thread that matches with U type pedicle nail, its cross section is provided with the hole that is used for the rotational lock screw, its hole be shaped as hexagon, octagonal, quincunx or square.
8. dynamic spinal internal fixation system according to claim 1 is characterized in that every group of described dynamic spinal pedicle nail group has two U type pedicle nails at least.
9. dynamic spinal internal fixation system according to claim 1, it is characterized in that described two groups of dynamic spinal pedicle of vertebral arch groups link together by horizontal connecting rod and horizontal butt hook, described horizontal butt hook top is provided with the through hole that holds horizontal connecting rod, the top is provided with a screw, laterally the butt hook bottom is provided with the hook groove that holds pitman, and the screw nail compresses horizontal connecting rod and pitman by the screw at horizontal butt hook top.
10. dynamic spinal internal fixation system according to claim 9 is characterized in that described horizontal butt hook profile is cylindrical, waist shape or square; Described screw nail cylindrical is provided with the full thread that matches with horizontal butt hook top screw, and screw nail center is provided with the hole that is used to rotate the screw nail, and it is shaped as square, hexagon, octagonal or quincunx; Described horizontal connecting rod cross section is cylindrical, waist shape or square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100318085A CN101601601B (en) | 2009-07-14 | 2009-07-14 | Dynamic spinal internal fixation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100318085A CN101601601B (en) | 2009-07-14 | 2009-07-14 | Dynamic spinal internal fixation system |
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| CN101601601A CN101601601A (en) | 2009-12-16 |
| CN101601601B true CN101601601B (en) | 2011-04-06 |
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| CN2009100318085A Expired - Fee Related CN101601601B (en) | 2009-07-14 | 2009-07-14 | Dynamic spinal internal fixation system |
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| CN105326557A (en) * | 2014-08-11 | 2016-02-17 | 天津康立尔生物科技有限公司 | Fixed pedicle screw system with angle adjusting function |
| CN105708539A (en) * | 2014-08-11 | 2016-06-29 | 天津市康尔医疗器械有限公司 | Universal pedicle screw hook system |
| CN105326547A (en) * | 2014-08-11 | 2016-02-17 | 天津市康尔医疗器械有限公司 | Universal pedicle screw system |
| CN105326546A (en) * | 2014-08-11 | 2016-02-17 | 天津康立尔生物科技有限公司 | Pedicle screw system |
| CN104799927A (en) * | 2015-05-11 | 2015-07-29 | 北京贝思达生物技术有限公司 | Spinal internal fixation screw-rod device |
| CN105125265A (en) * | 2015-07-14 | 2015-12-09 | 屈波 | Fixing method for pelvic posterior ring fracture and fixing device for pelvic posterior ring fracture |
| CN105361941A (en) * | 2015-12-14 | 2016-03-02 | 中国人民解放军第二军医大学 | Atlas vertebral pedicle hollow universal screw |
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| CN108553153A (en) * | 2018-05-15 | 2018-09-21 | 郭志良 | A kind of backbone fixation kit |
| CN108992216A (en) * | 2018-07-18 | 2018-12-14 | 中国医学科学院北京协和医院 | Artificial neural plate and internal fixation device of spine |
| CN109528280B (en) * | 2018-12-19 | 2023-12-29 | 中国人民解放军第二军医大学第二附属医院 | Anti-displacement device and anti-displacement system for internal fixation |
| CN110811800B (en) * | 2019-11-05 | 2024-07-19 | 云南欧铂斯医疗科技有限公司 | Combined type strong orthopedic fixing device for spine |
| CN115530951A (en) * | 2022-09-21 | 2022-12-30 | 北京市富乐科技开发有限公司 | Transverse connector for percutaneous minimally invasive pedicle screw |
| CN118267068B (en) * | 2024-04-17 | 2024-11-12 | 中国医学科学院北京协和医院 | A spinal fixation system and device |
| CN118267069B (en) * | 2024-05-29 | 2024-08-27 | 北京大学人民医院 | Elastic damping bionic assembled pedicle screw rod fixing system |
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| US5601554A (en) * | 1993-03-04 | 1997-02-11 | Advanced Spine Fixation Systems, Inc. | Branch connector for spinal fixation systems |
| CN2366065Y (en) * | 1999-01-29 | 2000-03-01 | 许立 | Multipurpose internal fixer for spinal column |
| CN101366656A (en) * | 2007-08-16 | 2009-02-18 | 上海锐植医疗器械有限公司 | Dynamic spine internal fixation system |
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| CN101601601A (en) | 2009-12-16 |
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