CN104546094A - Extending tension type non-fusion fixation system - Google Patents
Extending tension type non-fusion fixation system Download PDFInfo
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- CN104546094A CN104546094A CN201510037791.XA CN201510037791A CN104546094A CN 104546094 A CN104546094 A CN 104546094A CN 201510037791 A CN201510037791 A CN 201510037791A CN 104546094 A CN104546094 A CN 104546094A
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- screw
- connecting rod
- connector
- fixation system
- nonfusion
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- 230000004927 fusion Effects 0.000 title abstract description 5
- 238000005516 engineering process Methods 0.000 claims description 4
- 241000168254 Siro Species 0.000 claims description 3
- 238000009987 spinning Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 238000000034 method Methods 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 6
- 230000006837 decompression Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 231100000915 pathological change Toxicity 0.000 description 4
- 230000036285 pathological change Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004899 motility Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 210000004705 lumbosacral region Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035790 physiological processes and functions Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 241001079814 Symphyotrichum pilosum Species 0.000 description 1
- 235000004224 Typha angustifolia Nutrition 0.000 description 1
- 230000008485 antagonism Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000002692 epidural anesthesia Methods 0.000 description 1
- 230000003100 immobilizing effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 230000001009 osteoporotic effect Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Neurology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
An extending tension type non-fusion fixation system comprises pedicle screws and a first connecting rod. Two ends of the first connecting rod are connected to the pedicle screws, and the first connecting rod is connected to two extending parts through first connectors. The system is capable of connecting with more than three lumbar vertebrae and forming at least three gaps by supporting, and the problem that an existing system is capable of connecting with two lumbar vertebrae and one gap in the prior art is solved; two pedicle screws are connected to the two ends of the first connecting rod, the first connecting rod is connected to the two extending parts through the first connectors, the extending parts are connected to at least four pedicle screws, the pedicle screws can be knocked into four lumbar vertebrae and form three gaps by supporting, by means of the biomechanical effects uplifting in space, the sufficient tension force and supporting force can be provided in a three-dimensional elastic space better.
Description
Technical field
The present invention relates to a kind of lumbar vertebra internal fixation system, be specifically related to the drawing Nonfusion fixation system of a kind of extended pattern, belong to technical field of medical instruments.
Background technology
Patent ZL2013207349620 discloses a kind of drawing nonfusion posterior lumbar fixation system, comprise two pieces of pedicle screws and a connector, described connector two ends are all set to " U " type structure, described " U " type structure two ends connect one piece of pedicle screw respectively, it is characterized in that: described connector middle is provided with at least one protuberance, one end of protuberance two ends respectively with two " U " type structure is connected.This patent possesses following advantage: 1, special 3 D stereo design, substituted by stretching and strut, increase span between stress point to a certain extent, the design science more of coupling part, profile design more freely, press close to human spine's physiological curve and physiological function, the perfect non-fused elastic stability embodying this system fixes feature, reduces the stiff rigidity merging fixed system.Both allowed Stabilization be played, and also allowed motility enough be represented.System internal stress cushioning effect is obvious, and the damage of nail rod loosens probability and obviously declines." impact " side effect rigidly fixing generation between screw and adapter is weakened by elastic connecting device between screw, makes bone be able to better maintenance to screw hold.There is certain pliability in system, closer to human spine's physiological movement function on stable immobilizing foundation.2, coupling part is near the rotation axis of spinal column axis, stretch in the wrong, side is bent and in rotation, more meet spinal column multiaxis conjugate movement feature, keeps again suitable motility to the movable existing definite limitation of spinal column multiaxis.Unique appearance design is different from other similar holders, and what its biomechanical function can be made to embody is more perfect.Drawing cantilever opens effect, makes pedicle of vertebral arch torque arm length have certain substituting prolongation.From biomechanics aspect observational study, this system had both realized pedicle screw fixation, reached again between spinous process and strutted fixed effect.Screw is positioned at pedicle of vertebral arch part, and system is fixing to be had no significant effect the original physiological function of zygapophysial joints.In connection, the fixed system that dynamic non-fused is stable, its each can produce elastic deformation position be all that elasticity connects; Can effectively control institute's fixed-segment shearing action all around; Certain restriction is had again to the multiaxis over-activity of institute's fixed-segment.This system does not destroy ligament tissue between supraspinatus, crosses activity restriction in the wrong constant to spinal column.3, motion segment has unique Biomechanical on the shearing action in antagonism 360 degree of directions, can adapt to various cause nervous tissue to oppress bone and soft tissue decompression operation after internal fixtion, can effectively limit spinal column cross extend through bend and side bent movable, but retain certain movement motility.Part is had to limit but without hindrance effect to motion segment multiaxial motion.4, operating theater instruments uses simple, is easy to grasp.This internal fixation system, inserts convenience, wound is little, persistent during operation.This operation wide adaptability, easily popularizes.5, the technique of materials processing is simple, and consumptive material is few, higher to material quality requirement.6, comparatively like product is low for surgery cost, is easy to be accepted by patient.Significant economic benefit and social benefit can be produced.7, to gerontal patient or suffer from osteoporotic patient, can Cement strengthening pedicle screw, make the effect of screw anchor nail stronger.
Therefrom can find out that this fixed system can solve the problem between adjacent two lumbar vertebras well, cannot solve for this system of lumbar vertebra problem of more than three or three.Three such as adjacent lumbar vertebras all need to be fixed, middle lumbar vertebra needs to squeeze into two pedicle screws, can realize with two cover the patented product in theory, but due to the restriction of lumbar vertebra size, middle lumbar vertebra is difficult to squeeze into two pedicle screws, and more cannot realize for more this system of lumbar vertebra problem.
Summary of the invention
The present invention is directed to the problems referred to above, provide the drawing Nonfusion fixation system of a kind of extended pattern, object is: solve existing lumbar vertebra fixed system by the present invention and cannot solve three and fix with upper lumbar spine and to carry out the fixing difficult problem of non-fused with non-fused gap, Fusion levels two ends.
Technical solution of the present invention:
The drawing Nonfusion fixation system of a kind of extended pattern, comprise pedicle screw, it is characterized in that: described fixed system also comprises head rod, described head rod two ends are connected to pedicle screw, and described head rod is connected with extension device by the first connector.
Described first connector and extension device are at least two covers, mostly are five covers most.
Described extension device one end is provided with " U " type structure, described " U " type structure one end is connected with pedicle screw, " U " type structure one end is connected with the second connector one end being provided with at least one protuberance, the second connector other end is connected with second connecting rod one end, the second connecting rod other end is connected with first connector one end, described " U " type structure, the second connector and the one-body molded design of the second connecting rod.
Described first connector comprises two sections for semicircle and/or circular fixture, and described semicircle and/or circular fixture are connected by the 3rd connecting rod, described 3rd connecting rod and the semicircle and/or one-body molded design of circular fixture.
Described 3rd connecting rod two ends are provided with maximum two the first screws, are provided with fixing screw in the first screw.
The angle of described first screw and the 3rd connecting rod is 30-60 degree.
The angle of described first screw and the 3rd connecting rod is 45 degree.
Described head rod and the second connecting rod are by screw and semicircle and/or circular fixture compact siro spinning technology.
Described circular fixture is provided with the second screw, in the second screw, is provided with fixing screw.
Beneficial effect of the present invention:
1, the present invention effectively can connect three and strut at least three gaps with upper lumbar spine, solve the difficult problem that prior art can only connect two lumbar vertebras gap, two pedicle screws are connected especially by head rod two ends, and two extension devices are connected with by the first connector on head rod, extension device is connected with pedicle screw again thus at least four pedicle screws can be connected, such four pedicle screws are squeezed in four lumbar vertebras respectively, three gaps can be strutted simultaneously, coordinate protuberance Biomechanical spatially, make the present invention can embody enough tension force and support force in three dimensional elasticity space better, 2, the present invention can carry out non-fused to non-fused gap, Fusion levels two ends and fixes, and solves the technical barrier that prior art cannot complete.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 side-looking structural representation.
Fig. 2 is the main TV structure schematic diagram of the embodiment of the present invention 1.
Fig. 3 is extension device perspective view of the present invention.
Fig. 4 is the embodiment of the present invention 2 structural representation.
Fig. 5 is the embodiment of the present invention 3 structural representation.
Fig. 6 is the embodiment of the present invention 4 structural representation.
Fig. 7 is the embodiment of the present invention 5 side-looking structural representation.
Fig. 8 is the main TV structure schematic diagram of the embodiment of the present invention 5.
Wherein, 1, head rod, the 2, first connector, 3, extension device, 4, pedicle screw, 5, pedicle of vertebral arch nut, 21, semicircle fixture, the 22, the 3rd connecting rod, 24, circular fixture, 31, " U " type structure, 32, the second connector, the 33, second connecting rod, the 221, first screw, 222, screw, the 241, second screw.
Detailed description of the invention
Following institute drawings attached is only convenient to explain basic condition of the present invention, in accompanying drawing by form the component count of preferred embodiment, position, relation and size extension will have illustrated by, belong to industry technical ability at the change read and be correlated with after understanding situation of the present invention.In addition, in reading and after understanding situation of the present invention, specific strength, weight, intensity and the accurate dimension of similar requirement and the change of dimension scale is coordinated also to belong to industry technical ability.
Identical or similar assembly is indicated in different figures with identical label; Please understand in addition such as " first ", " second " in literary composition, " the 3rd ", " on ", D score, "front", "rear", " interior ", " outward ", " end ", " portion ", " section ", " width ", " thickness ", " district " etc. and similar term to be only convenient in observer's reference diagram structure and only to describe the present invention for helping.
As shown in Figure 1 to Figure 3, the drawing Nonfusion fixation system of a kind of extended pattern, comprise pedicle screw 4, described fixed system also comprises head rod 1, described head rod two ends are connected to pedicle screw, and described head rod is connected with extension device 3 by the first connector 2.
Described first connector and extension device are at least two covers, mostly are five covers most.
Described extension device one end is provided with " U " type structure 31, described " U " type structure one end is connected with pedicle screw, " U " type structure one end is connected with second connector 32 one end being provided with at least one protuberance, the second connector other end is connected with second connecting rod 33 one end, the second connecting rod other end is connected with first connector one end, described " U " type structure, the second connector and the one-body molded design of the second connecting rod.
Described first connector comprises two sections for semicircle and/or circular fixture, and described semicircle fixture 21 and/or circular fixture 24 are connected by the 3rd connecting rod, described 3rd connecting rod and the semicircle and/or one-body molded design of circular fixture.
Described 3rd connecting rod two ends are provided with in maximum two the first screw 221, first screws and are provided with fixing screw 222.
The angle of described first screw and the 3rd connecting rod is 30-60 degree.
The angle of described first screw and the 3rd connecting rod is 45 degree.
Described head rod and the second connecting rod are by screw and semicircle and/or circular fixture compact siro spinning technology.
Described circular fixture is provided with in the second screw 241, second screw and is provided with fixing screw.
Embodiment 1:
As depicted in figs. 1 and 2, head rod is installed two cover pedicle screws, head rod is also connected by two the first connectors and is connected with two extension devices, each extension device installs a set of pedicle screw respectively, four cover pedicle screws have so just been installed, the lumbar vertebra that centre is merged can be propped up, solve the lumbar vertebra problem merged, concrete fusion position can be decided by the position adjusting pedicle screw.
Embodiment 2:
As shown in Figure 4, a circular fixture is connected respectively by the 3rd connecting rod two ends, circular fixture arranges the second screw, then head rod and the 3rd connecting rod to be inserted respectively in circular fixture and to carry out fastening locking by the nut in screw-in second screw.
Embodiment 3:
As shown in Figure 5, a circular fixture and a semicircle fixture is connected respectively by the 3rd connecting rod two ends, 3rd connecting rod one end arranges the first screw, circular fixture arranges the second screw, then head rod and the 3rd connecting rod to be inserted respectively in circular fixture and semicircle fixture and to carry out fastening locking by the nut in screw-in first screw and the second screw.
Embodiment 4:
As shown in Figure 6, two semicircle fixtures are connected respectively by the 3rd connecting rod two ends, 3rd connecting rod two ends arrange the first screw, then head rod and the 3rd connecting rod to be inserted respectively in semicircle fixture and to carry out fastening locking by the nut in screw-in first screw.
Embodiment 5:
As shown in Figure 7 and Figure 8, when five lumbar vertebras all need to prop up, on head rod, each first connector is connected to an extension device, then on each extension device, a pedicle screw is connected again, each pedicle screw coordinates a supporting pedicle of vertebral arch nut 5, so just four of a five lumbar vertebras gap all can be propped up.
As shown in Figure 3, in order to save space, " U " type structure 31 in the present invention designs in XZ plane, the opening direction of " U " type structure is X-axis negative direction, second stud connector design is in XY plane, and the protuberance direction on the second connector is Y-axis positive direction, and the 3rd connecting rod direction is X-direction.
Concrete using method:
According to the concrete state of an illness of patient, the position at pathological changes place, can select one-sided or bilateral to fix.
Whole body or epidural anesthesia success, get ventricumbent position, and routine disinfection paving is single.Get posterior midline, centered by pathological changes gap, make the otch that a longitudinal length is suitable, successively cut, be separated articular process place, large both sides from spinous process to both sides along subperiosteum.X-ray is located, and pedicle screw one piece is respectively inserted at pedicle of vertebral arch place, pathological changes gap three.
If the person that needs spinal canal decompression, then give abundant spinal canal decompression, nerve root is made to remove compressing, thorough decompression, then holder is installed, in the middle of first " U " type structure and the 3rd " U " type structure one end and second " U " type structure, locking screw screws in, the next screw lock, strut pathological changes gap with dilator, screwing upper screw, now its non-fused flexible fastening function just exercised by holder.Lift spinous process with towel forceps, check and understand fixing rear effect.
If do not needed decompression, then, after being installed by holder, also lift spinous process with towel forceps, effect after inspection understanding is fixing.Satisfied, then layering is sewed up and is closed otch.
Basic instruction of the present invention is illustrated, and for the people with the usual technical ability in this area, many extensions and change will be aobvious and Yi Zhizhe.For example, " U " of the present invention type structure is only not " U " shape, and as semicircle, half elliptic, protuberance are all passable, object " U " type structure can be allowed larger in the elasticity of a dimension by being designed to arcuate structure; For another example XYZ coordinate axle of the present invention is not to special restriction of the present invention, but is convenient to the understanding of reader.
The present invention disclosed due to description can not depart from the present invention's spirit or other particular form of general characteristics be implemented, and some forms of these particular forms are noted, so the embodiment that description discloses should be considered as illustrating and unrestricted.Scope of the present invention is defined by appended claim, instead of defined by above-mentioned explanation, and the institute for the impartial meaning and scope that fall into claim changes and will be included within its scope.
To sum up, the present invention produces a desired effect.
Claims (9)
1. the drawing Nonfusion fixation system of extended pattern, comprise pedicle screw, it is characterized in that: described fixed system also comprises head rod, described head rod two ends are connected to pedicle screw, and described head rod is connected with extension device by the first connector.
2. the drawing Nonfusion fixation system of a kind of extended pattern according to claim 1, is characterized in that: described first connector and extension device are at least two covers, mostly are five covers most.
3. the drawing Nonfusion fixation system of a kind of extended pattern according to claim 1, it is characterized in that: described extension device one end is provided with " U " type structure, described " U " type structure one end is connected with pedicle screw, " U " type structure one end is connected with the second connector one end being provided with at least one protuberance, the second connector other end is connected with second connecting rod one end, the second connecting rod other end is connected with first connector one end, described " U " type structure, the second connector and the one-body molded design of the second connecting rod.
4. the drawing Nonfusion fixation system of a kind of extended pattern according to claim 3, it is characterized in that: described first connector comprises two sections for semicircle and/or circular fixture, described semicircle and/or circular fixture are connected by the 3rd connecting rod, described 3rd connecting rod and the semicircle and/or one-body molded design of circular fixture.
5. the drawing Nonfusion fixation system of a kind of extended pattern according to claim 4, is characterized in that: described 3rd connecting rod two ends are provided with maximum two the first screws, are provided with fixing screw in the first screw.
6. the drawing Nonfusion fixation system of a kind of extended pattern according to claim 5, is characterized in that: the angle of described first screw and the 3rd connecting rod is 30-60 degree.
7. the drawing Nonfusion fixation system of a kind of extended pattern according to claim 6, is characterized in that: the angle of described first screw and the 3rd connecting rod is 45 degree.
8. the drawing Nonfusion fixation system of a kind of extended pattern according to claim 1 or 3, is characterized in that: described head rod and the second connecting rod are by screw and semicircle and/or circular fixture compact siro spinning technology.
9. the drawing Nonfusion fixation system of a kind of extended pattern according to claim 8, is characterized in that: described circular fixture is provided with the second screw, is provided with fixing screw in the second screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510037791.XA CN104546094A (en) | 2015-01-26 | 2015-01-26 | Extending tension type non-fusion fixation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510037791.XA CN104546094A (en) | 2015-01-26 | 2015-01-26 | Extending tension type non-fusion fixation system |
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| CN104546094A true CN104546094A (en) | 2015-04-29 |
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| CN201510037791.XA Pending CN104546094A (en) | 2015-01-26 | 2015-01-26 | Extending tension type non-fusion fixation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113440236A (en) * | 2021-06-22 | 2021-09-28 | 浙江德康医疗器械有限公司 | Domino connection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5000165A (en) * | 1989-05-15 | 1991-03-19 | Watanabe Robert S | Lumbar spine rod fixation system |
| CN1798528A (en) * | 2003-04-04 | 2006-07-05 | 斯蒂芬·里特兰德 | Dynamic fixture and method of use |
| CN101073513A (en) * | 2006-05-15 | 2007-11-21 | 巴奥米特西班牙整形公司 | Surgical screw system and its application |
| US20080262552A1 (en) * | 2006-12-07 | 2008-10-23 | Soo-Kyung Kim | Spinal Stabilization Apparatus |
| CN101579253A (en) * | 2009-05-27 | 2009-11-18 | 陈哲 | Lumbar spondylolysis restoration internal fixation system |
| CN102499745A (en) * | 2011-11-07 | 2012-06-20 | 南方医科大学 | Improved spinal dynamic internal fixation device |
| CN202458646U (en) * | 2012-01-18 | 2012-10-03 | 沙漠 | Posterior lumbar dynamic fixing device |
| CN203539427U (en) * | 2013-10-12 | 2014-04-16 | 苏州西脉记忆合金有限公司 | Elastic inner fixing device of spine |
| CN203647451U (en) * | 2013-11-20 | 2014-06-18 | 杨春 | Stretching type posterior lumbar non-fusion fixing system |
| CN204428142U (en) * | 2015-01-26 | 2015-07-01 | 杨春 | The drawing Nonfusion fixation system of a kind of extended pattern |
-
2015
- 2015-01-26 CN CN201510037791.XA patent/CN104546094A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5000165A (en) * | 1989-05-15 | 1991-03-19 | Watanabe Robert S | Lumbar spine rod fixation system |
| CN1798528A (en) * | 2003-04-04 | 2006-07-05 | 斯蒂芬·里特兰德 | Dynamic fixture and method of use |
| CN101073513A (en) * | 2006-05-15 | 2007-11-21 | 巴奥米特西班牙整形公司 | Surgical screw system and its application |
| US20080262552A1 (en) * | 2006-12-07 | 2008-10-23 | Soo-Kyung Kim | Spinal Stabilization Apparatus |
| CN101579253A (en) * | 2009-05-27 | 2009-11-18 | 陈哲 | Lumbar spondylolysis restoration internal fixation system |
| CN102499745A (en) * | 2011-11-07 | 2012-06-20 | 南方医科大学 | Improved spinal dynamic internal fixation device |
| CN202458646U (en) * | 2012-01-18 | 2012-10-03 | 沙漠 | Posterior lumbar dynamic fixing device |
| CN203539427U (en) * | 2013-10-12 | 2014-04-16 | 苏州西脉记忆合金有限公司 | Elastic inner fixing device of spine |
| CN203647451U (en) * | 2013-11-20 | 2014-06-18 | 杨春 | Stretching type posterior lumbar non-fusion fixing system |
| CN204428142U (en) * | 2015-01-26 | 2015-07-01 | 杨春 | The drawing Nonfusion fixation system of a kind of extended pattern |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113440236A (en) * | 2021-06-22 | 2021-09-28 | 浙江德康医疗器械有限公司 | Domino connection system |
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