CN103565502A - Spine dynamic connecting rod - Google Patents
Spine dynamic connecting rod Download PDFInfo
- Publication number
- CN103565502A CN103565502A CN201210260364.4A CN201210260364A CN103565502A CN 103565502 A CN103565502 A CN 103565502A CN 201210260364 A CN201210260364 A CN 201210260364A CN 103565502 A CN103565502 A CN 103565502A
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- China
- Prior art keywords
- spinal column
- connection rod
- dynamic connection
- column dynamic
- elastic component
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- 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 ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
- A61B17/7026—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a part that is flexible due to its form
- A61B17/7028—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a part that is flexible due to its form the flexible part being a coil spring
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- 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 ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
- A61B17/7031—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other made wholly or partly of flexible material
Abstract
The invention provides a spine dynamic connecting rod which comprises an upper connecting end, a first elastic piece and a lower connecting end along the vertical direction. The upper connecting end and the lower connecting end are connected through the first elastic piece, an elastic hole is formed in the first elastic piece, and an elastic groove is formed in the periphery of the first elastic piece and communicated or not communicated with the elastic hole of the first elastic piece. The spine dynamic connecting rod is characterized in that the elastic groove is of a multi-point spiral groove structure. The spine dynamic connecting rod has better dynamic performance and fatigue performance.
Description
Technical field
The present invention relates to technical field is orthopedic implant technical field, relates to especially a kind of spinal column dynamic connection rod.
Background technology
When intervertebral disc degeneration or the slippage of little joint or regression, can cause intervertebral height to be lost, rear structure is unstable, thus can cause intervertebral foramina and vertebral foramen narrow; And this narrow spinal nerves or the nerve root of can oppressing causes the symptoms such as patient's lumbago and skelalgia, numbness, have a strong impact on patient's quality of life.
On addressing this problem, known topmost method is to carry out interbody fusion, by this interbody fusion, can keep intervertebral height, reduces the pressure of neuromechanism.At present, mainly adopt pedicle screw system (the metal pitman that in system, pitman is normally firm), fusion device and various tabular device to carry out strong fixing.Yet the relatively fixing stress that can cause of Fusion levels is concentrated to contiguous vertebral body, especially can increase the weight of the load of adjacent vertebral bodies.Meanwhile, the mobility forfeiture of Fusion levels can cause the range of activity of adjacent segment to increase, and to compensate the mobility of Fusion levels, thereby causes the biomechanics environmental abnormality of neighbouring section, and the change of biomechanics environment finally can cause Adjacent segment degeneration.
Spinal surgeons and scientific research personnel study discovery, and existing pedicle screw system is stiff after implantation.Although it has increased the stability of lumbar vertebra, also changed the biomechanics environment of lumbar vertebra, thereby caused the probability of Adjacent segment degeneration simultaneously.Had now the dynamic implant of some lumbar vertebras to occur, but their therapeutic effect is poor, is mainly that stability is inadequate, range of movement is excessive, also has the related complications such as fracture of spinous process, implant be loosening, thereby causes the probability of again performing the operation.On the other hand, these implants can not or be not suitable for the comparatively serious degenerative lumbar symptom for the treatment of, cause the range of application of these implants very narrow.
Recently, there is clinically the dynamic pitman of several pedicles of vertebral arch, for the operative treatment of the degenerative lumbar symptom of various degree.The major function of these dynamic pitmans is to guarantee, on the basis of spinal stabilization, to provide extra dynamic motion performance.
Prior art patent documentation US20070233075 discloses a kind of pedicle screw system, and it is comprised of screw, kernel, a glove etc., and kernel penetrates a glove and is placed on the screw of adjacent vertebral bodies, and is locked by special snap close.By adjusting the rigidity of kernel and a glove, can provide stability and dynamic property for patient.The prior art pedicle screw system need to provide kernel and a glove, thereby complex structure, inconvenient Operation.
Scient ' x-Alphatec Spine company has proposed a kind of
tTL implant, this implant is a kind of dynamic pitman, the centre of this pitman is comprised of a complete buffer unit, this buffer unit comprises stacked plate-like titanium alloy structure, allows linear extendible, Control Shaft to become angular movement.Each disc spring passes through nitrogen oxidation processes, has strengthened antiwear property.The damping characteristics of pitman allows in design 0.4mm maximum axial compression and stretches, and allows the motion of (when bending and stretching with lateroflexion) great achievement ± 2.25 ° simultaneously.Damping characteristics can play the effect of linear elasticity " buffer ".In combination type assembly system, it is applied to non-Fusion levels, has only limited the activity of bending and stretching and axially-movable, but there is no lateral bending and twisting property.In addition, this system also comprises the lordosis of preset nearly 15 °.The structure of the prior art implant is also comparatively complicated, needs more number of assembling steps, inconvenient Operation.
Prior art patent documentation CN100409820C has proposed a kind of bio-flexible spinal fixation system of belt shape memorial alloy, and it adopts the flexible longitudinal rod of nodular to connect pedicle screw, with transverse link, longitudinal rod is separated.It adopts marmem to make, thereby can connect simply and easily longitudinal rod and pedicle screw.Though this fixture can obtain good pliability, the rigidity of this fixture a little less than, stability is not strong, can not provide spinal column enough dynamic stability performances.
Prior art patent documentation CN102106750A has proposed a kind of spinal column dynamic connection rod, it comprises connecting portion, lower connecting portion and elastic component, described upper connecting portion and described lower connecting portion interconnect by described elastic component, wherein said upper connecting portion, described lower connecting portion and described elastic component form, in described elastic component, be provided with springhole, and elasticity groove is formed in the peripheral part of described elastic component.This spinal column dynamic connection rod can keep the normal physiological activity of spinal column when spinal stability is provided.But the prior art patent documentation does not propose further suggestion to the improvement of the mechanical property of spinal column dynamic connection rod and fatigue behaviour.
Summary of the invention
In view of the defect of prior art, the object of the invention is to develop a kind of spinal column dynamic connection rod, this spinal column dynamic connection rod has better mechanical property and fatigue behaviour.
According to the present invention, a kind of spinal column dynamic connection rod is provided, described spinal column dynamic connection rod comprises along its longitudinal direction: upper link; The first elastic component; And lower link, described upper link and described lower link interconnect by described the first elastic component, in described the first elastic component, be provided with springhole, and elasticity groove is formed in the peripheral part of described the first elastic component, and communicate or do not communicate with the springhole of described the first elastic component, it is characterized in that: described elasticity groove is multi-head spiral groove structure.
According to such scheme of the present invention, the elasticity groove of described spinal column dynamic connection rod is multi-head spiral groove structure, effect by multi-head spiral groove structure can make the load conduction of this spinal column dynamic connection rod more even thus, thereby makes it have better mechanical property and fatigue behaviour.
Preferably, described multi-head spiral groove structure has fixed pitch or has variation pitch.Thus, the stretch section structure that can control described spinal column dynamic connection rod is to the linearity of load or nonlinear response.
Preferably, starting point and/or the final position of described elasticity groove is set according to the bearing load situation of described spinal column dynamic connection rod, to reduce the stress concentration phenomenon producing in described spinal column dynamic connection rod.Thus, starting point and/or the final position of corresponding elasticity groove can be designed according to the different loads of described spinal column dynamic connection rod, thereby the stress concentration phenomenon of described spinal column dynamic connection rod can be significantly reduced.
Preferably, described upper link and described lower link are with respect to the centrage arranged off-centre of described the first elastic component, and the cross section of described upper link and/or described lower link is the directive shape of tool, so as with the groove fit of corresponding pedicle nail.Here, " the directive shape of tool " refers to a kind of shape of cross section of non-circle, thereby can make the shape of cross section of described upper link and/or described lower link and the groove type forming shape of corresponding pedicle nail be connected.The directive shape of described tool can be to comprise ellipse, rhombus and polygonal regular figure, or irregular figure.Thus, can realize the pedicle nail groove fit of non-circle cross-section and the non-circle of described upper link and/or described lower link, thereby not only can realize better installation guidance quality, also can realize more firm hold, make described spinal column dynamic connection rod in use be not easy to rotate simultaneously.
Preferably, the described upper link of described spinal column dynamic connection rod and/or described lower link have formed extension, and described spinal column dynamic connection rod can be used in multi-segmental lumbar surgery.Described extension can be directly rod of rigidity, or described extension can have one or more the second elastic components.The structure of the structure of described the second elastic component and described the first elastic component can be identical or different.The length of described extension can be the length of one or more lumbar motion segments.Thus, in the situation that extension is the straight rod of rigidity, described spinal column dynamic connection rod can be realized on the whole merging and add dynamic stabilizing function, can prevent to merge neighbouring section degeneration.In the situation that extension is stretch section structure, described spinal column dynamic connection rod can be realized multi-segmental dynamic stabilizing function on the whole.
In a word, according to spinal column dynamic connection rod of the present invention, can there is better mechanical property and fatigue behaviour, thereby can guarantee the safety and reliability after apparatus implant into body.And spinal column dynamic connection rod of the present invention is compared and is had more excellent elastic performance with other dynamic pedicle screw pitmans, meets spinal biomechanics requirement; Spinal column dynamic connection rod of the present invention is guaranteeing, under the prerequisite of spinal stabilization performance, can to provide spinal column more range of activity; Spinal column dynamic connection rod of the present invention can also provide locking direction and the locking more reliably of spinal column dynamic connection rod more accurately; Multi-head spiral groove structure design in spinal column dynamic connection rod of the present invention can allow the load of spinal column dynamic connection rod transmit more balance; Special helical groove starting point in spinal column dynamic connection rod of the present invention and/or the design of terminal drift angle can effectively reduce stress concentration phenomenon.Multi-head spiral groove and special starting point and/or terminal drift angle can significantly improve the fatigue behaviour of spinal column dynamic connection rod system.And structure of the present invention is mainly to rely on the helical groove of hollow out to provide elastic parameter variable elastic performance, thereby total is single structure, there is no too much number of assembling steps, avoided wearing and tearing or the failure of mechanical connection, very convenient Operation.
Accompanying drawing explanation
From below with reference to being readily appreciated that above-mentioned feature and advantage of the present invention the described preferred embodiment of accompanying drawing, wherein in each accompanying drawing, identical part adopts identical Reference numeral to represent.
Fig. 1 is the schematic diagram that is applied to the spinal column dynamic connection rod of the present invention of spinal column.
Fig. 2 is the schematic perspective view of spinal column dynamic connection rod according to an embodiment of the invention.
Fig. 3 is the schematic perspective view of spinal column dynamic connection rod according to another embodiment of the invention.
Fig. 4 is the top view of spinal column dynamic connection rod, and it has shown four kinds of different link structures.
Fig. 5 is the schematic perspective view of spinal column dynamic connection rod according to still a further embodiment, and wherein said spinal column dynamic connection rod is with twin-feed spiral groove.
Fig. 6 is the top view of spinal column dynamic connection rod according to an embodiment of the invention, and it has shown the starting point of helical groove and an example of final position design.
Fig. 7 is the schematic perspective view of the spinal column dynamic connection rod of Fig. 6.
Fig. 8 is the schematic perspective view of spinal column dynamic connection rod according to still a further embodiment, and it has the straight rod of rigidity as extension.
Fig. 9 is the schematic perspective view of spinal column dynamic connection rod according to another preferred embodiment, and wherein extension has another one elastic component.
The specific embodiment
Below with reference to accompanying drawing, describe the preferred embodiments of the present invention in detail.
In the prior art, the normally firm metal pitman of the pedicle screw system pitman of spinal fusion surgery.Firm metal pitman does not like this have elasticity.This firm metal pitman can make the Fusion levels of spinal column fixed relative to one another.But the relatively fixing stress that can cause of Fusion levels is concentrated to contiguous vertebral body; Meanwhile, the forfeiture of the mobility of Fusion levels can cause the range of activity of adjacent segment to increase, and to compensate the mobility of Fusion levels, thereby causes the biomechanics environmental abnormality of neighbouring section; And the change of biomechanics environment can finally cause Adjacent segment degeneration.
Device of the present invention belongs to the pedicle of vertebral arch dynamical system of the non-fusion of spinal column.Fig. 1 is the schematic diagram that is applied to the spinal column dynamic connection rod of the present invention of spinal column, and Fig. 2 is the schematic perspective view of spinal column dynamic connection rod according to an embodiment of the invention.
In Fig. 1 and Fig. 2, Reference numeral 1 represents spinal column dynamic connection rod; Reference numeral 2 represents upper link; Reference numeral 3 represents lower link; Reference numeral 4 represents elastic component; Reference numeral 5 represents elasticity groove; Reference numeral 6 represents springhole.
Spinal column dynamic connection rod of the present invention has increased by one section of elastic component 4 with respect to original pitman, and this elastic component 4 can, for pitman provides elastic performance, after pitman is implanted, maintain the certain range of activity of spinal column.Whole spinal column dynamic connection rod 1 comprises link 2, lower link 3, elastic component 4, elasticity groove 5 and springhole 6.After spinal column dynamic connection rod 1 implant into body, elastic component 4 can maintain human spine and move in certain range of activity.
Particularly, described spinal column dynamic connection rod 1 comprises along its longitudinal direction: upper link 2; Elastic component 4; And lower link 3.Described upper link 2 and described lower link 3 interconnect by described elastic component 4.In described elastic component 4, be provided with springhole 6, and elasticity groove 5 is formed in the peripheral part of described elastic component 4.This spinal column dynamic connection rod 1 is monomer structure.The upper link 2 of spinal column dynamic connection rod 1 is for being connected to a part for human spine's structure, and the lower link 3 of spinal column dynamic connection rod 1 is for being connected to another part of human spine's structure.Upper link 2 and lower link 3 link together by therebetween elastic component 4, and upper link 2, lower link 3 and elastic component 4 structure that forms as one.Upper link 2, lower link 3, elastic component 4 all have column structure.At the approximate mid-section place of elastic component 4, got out described springhole 6, this springhole 6 extends and penetrates along the longitudinal by elastic component 4 generally along its centrage.In the peripheral part of elastic component 4, cut out flexible groove 5.This elasticity groove 5 spirally extends in the peripheral part of elastic component 4.Can form by the peripheral part of hollow out elastic component 4 described elasticity groove 5.Because the peripheral part by hollow out elastic component 4 forms elasticity groove 5, so described elasticity groove 5 penetrates the peripheral part of elastic component 4, make central springhole 6 can pass through this elasticity groove 5 and exterior.In addition, elasticity groove 5 also can be arranged on not penetrate the mode of the peripheral part of elastic component 4 in the peripheral part of elastic component 4, and now, elasticity groove 5 is separate by the peripheral part of elastic component 4 with springhole 6, thereby elasticity groove 5 is not communicated with springhole 6.By the spinal column dynamic connection rod 1 designing above, elastic component 4 both can maintain the stability of spinal column, can allow again spinal column movable within the specific limits, thereby can keep the biomechanics environment of normal spinal column.
As from the foregoing, the invention belongs to a kind of pedicle of vertebral arch dynamical system, its main implementation is: after spinal column dynamic connection rod and pedicle screw are fixing, the rigidity of dependence spinal column dynamic connection rod provides the Initial stability of spinal column, meanwhile, the elastic part of spinal column dynamic connection rod can provide again spinal column mobility within the specific limits, thereby keeps the biomechanics environment of normal spinal column, prevent that neighbouring section is because of the strong excessive load fixedly causing, thereby prevented the regression of neighbouring section.Therefore, spinal column dynamic connection rod of the present invention can keep the normal center of rotation of spinal column when recover intervertebral height, minimizing spinal nerves pressure, spinal stability being provided, and the fine motion after treatment is provided, and reduces the probability of Adjacent segment degeneration.
Fig. 3 is the schematic perspective view of spinal column dynamic connection rod according to another embodiment of the invention, and Fig. 4 is the top view of spinal column dynamic connection rod, and it has shown four kinds of different link structures.Similarly, Reference numeral 2 represents upper link; Reference numeral 3 represents lower link; Reference numeral 4 represents elastic component; Reference numeral 6 represents springhole.As shown in Figure 3,4, the upper link 2 of spinal column dynamic connection rod and lower link 3 are with respect to the centrage arranged off-centre of described elastic component 4, and the cross section of described upper link 2 and/or described lower link 3 can be for having the shape of directivity, so as with the groove fit of corresponding pedicle nail.The directive shape of described tool can be to comprise ellipse, rhombus and polygonal regular figure, or irregular figure.The cross section that shows respectively link 2 and lower link 3 in Fig. 4 can be respectively oval, square, rhombus or regular hexagon.Because the installation of spinal column dynamic connection rod has directivity, so by the link shape of cross section (non-circle cross-section) of the above-mentioned directive shape of tool, can realize the pedicle nail groove fit of non-circle cross-section and the non-circle of described upper link and/or described lower link, thereby not only can realize better installation guidance quality, also can realize more firm hold, make described spinal column dynamic connection rod in use be not easy to rotate simultaneously.
Fig. 5 is the schematic perspective view of spinal column dynamic connection rod according to still a further embodiment, and wherein said spinal column dynamic connection rod 1 is with twin-feed spiral groove.As shown in Figure 5, described spinal column dynamic connection rod 1 is formed with elasticity groove, and described elasticity groove can be multi-head spiral groove structure.Described " multi-head spiral groove " comprises double end or multi-head spiral groove more herein, the spinal column dynamic connection rod 1 of the structure with twin-feed spiral groove has been shown in Fig. 5, wherein, Reference numeral 7 represents first helical groove, and Reference numeral 8 represents second helical groove.Because the elasticity groove of described spinal column dynamic connection rod 1 is multi-head spiral groove structure, so the effect by multi-head spiral groove structure can make the load conduction of spinal column dynamic connection rod more even.Described multi-head spiral groove structure can have fixed pitch or have variation pitch, can correspondingly control thus the stretch section structure of spinal column dynamic connection rod to the linearity of load or nonlinear response.
Fig. 6 is the top view of spinal column dynamic connection rod according to an embodiment of the invention, and it has shown the starting point of helical groove and an example of final position design, and Fig. 7 is the schematic perspective view of the spinal column dynamic connection rod of Fig. 6.Similarly, Reference numeral 1 represents spinal column dynamic connection rod; Reference numeral 2 represents upper link; Reference numeral 3 represents lower link; Reference numeral 6 represents springhole.The impact of the stress distribution situation when carrying is very large for spinal column dynamic connection rod overall structure for the starting point of the elasticity groove of spinal column dynamic connection rod and final position.According to the present invention, starting point and/or the final position of described elasticity groove can be set according to the bearing load situation of described spinal column dynamic connection rod 1, to reduce the stress concentration phenomenon producing in described spinal column dynamic connection rod 1.Thus, starting point and/or the final position of corresponding helical groove can be designed according to the different loads of spinal column dynamic connection rod 1, thereby the stress concentration phenomenon of described spinal column dynamic connection rod 1 can be significantly reduced.For example, about the starting point of helical groove and/or the concrete drift angle in final position, arrange, can carry out experimental design by finite element analysis software.Such as, for thering is the spinal column dynamic connection rod 1 of twin-feed spiral groove, can set in advance the scope of design (angle [alpha] and angle beta are respectively that the starting point of two helical grooves and final position are with respect to the angle of the neutral surface of elastic component) of an angle [alpha] and angle beta, then by finite element analysis software, find out the composite design of many two angles within the scope of this, and find optimal solution wherein by iterative computation, make to bear the stress producing on the spinal column dynamic connection rod of constantly acting load minimum (especially the stress on the elasticity groove of elastic component is minimum) in the situation that of this angle combination, thus under the guidance of this design parameter, the probability that can make spinal column dynamic connection rod generating material when bearing human body load condition surrender or destroy drops to minimum.Finally, also can in conjunction with concrete processing technique, determine that is relatively conducive to the angle combination that actual processing meets again above-mentioned design again.For example, if spinal column dynamic connection rod 1 has two helical grooves, the starting point of a groove in two helical grooves can become 30 ° of angles with neutral surface, and an other groove can become with neutral surface 25 ° of angles.
Fig. 8 is the schematic perspective view of spinal column dynamic connection rod according to still a further embodiment, and it has the straight rod 9 of rigidity as extension 11; Fig. 9 is the schematic perspective view of spinal column dynamic connection rod according to another preferred embodiment, and wherein extension 12 has another one elastic component 10.Similarly, Reference numeral 2 represents upper link; Reference numeral 3 represents lower link; Reference numeral 4 represents elastic component.Described upper link 2 and/or the described lower link 3 of described spinal column dynamic connection rod can form extension 11,12, and described spinal column dynamic connection rod can be used in multi-segmental lumbar surgery.As shown in Figure 8, described extension 11 is the straight rods 9 of rigidity.Described extension also can have one or more other elastic components, and as shown in Figure 9, described extension 12 can have an other elastic component 10, and the structure of this other elastic component 10 can be identical with the structure of foregoing elastic component 4.In addition, the structure of above-mentioned one or more other elastic components of described extension can be not identical with the structure of foregoing elastic component 4 yet.The length of described extension 11,12 can be the length of one or more lumbar motion segments.Thus, in the situation that extension is the straight rod of rigidity, described spinal column dynamic connection rod can be realized on the whole merging and add dynamic stabilizing function, can prevent to merge neighbouring section degeneration.In the situation that extension is stretch section structure, described spinal column dynamic connection rod can be realized multi-segmental dynamic stabilizing function on the whole.
In a word, according to spinal column dynamic connection rod of the present invention, can there is better mechanical property and fatigue behaviour, thereby can guarantee the safety and reliability after apparatus implant into body.And spinal column dynamic connection rod of the present invention is compared and is had more excellent elastic performance with other dynamic pedicle screw pitmans, meets spinal biomechanics requirement; Spinal column dynamic connection rod of the present invention is guaranteeing, under the prerequisite of spinal stabilization performance, can to provide spinal column more range of activity; Spinal column dynamic connection rod of the present invention can also provide locking direction and the locking more reliably of spinal column dynamic connection rod more accurately; Multi-head spiral groove structure design in spinal column dynamic connection rod of the present invention can allow the load of spinal column dynamic connection rod transmit more balance; Special helical groove starting point in spinal column dynamic connection rod of the present invention and/or the design of terminal drift angle can effectively reduce stress concentration phenomenon.Multi-head spiral groove and special starting point and/or terminal drift angle can significantly improve the fatigue behaviour of spinal column dynamic connection rod system.And structure of the present invention is mainly to rely on the helical groove of hollow out to provide elastic parameter variable elastic performance, thereby total is single structure, there is no too much number of assembling steps, avoided wearing and tearing or the failure of mechanical connection, very convenient Operation.
For the ordinary skill in the art, can be easy to the details of embodiments of the invention to carry out various modification and improvement.Within these modification and improvement all drop on the scope of design of the present invention.
Claims (10)
1. a spinal column dynamic connection rod, described spinal column dynamic connection rod (1) comprises along its longitudinal direction: upper link (2); The first elastic component (4); And lower link (3),
Described upper link (2) and described lower link (3) interconnect by described the first elastic component (4), are provided with springhole (6) in described the first elastic component (4), and
Elasticity groove (5) is formed in the peripheral part of described the first elastic component (4), and communicates or do not communicate with the springhole (6) of described the first elastic component (4),
It is characterized in that:
Described elasticity groove (5) is multi-head spiral groove structure.
2. spinal column dynamic connection rod according to claim 1, is characterized in that:
Described multi-head spiral groove structure has fixed pitch or has variation pitch.
3. spinal column dynamic connection rod according to claim 1, is characterized in that:
Starting point and/or the final position of described elasticity groove (5) are set according to the bearing load situation of described spinal column dynamic connection rod (1).
4. according to the spinal column dynamic connection rod described in any one in claims 1 to 3, it is characterized in that:
Described upper link (2) and described lower link (3) are with respect to the centrage arranged off-centre of described the first elastic component (4), and the cross section of described upper link (2) and/or described lower link (3) is the directive shape of tool.
5. spinal column dynamic connection rod according to claim 4, is characterized in that:
The directive shape of described tool is to comprise ellipse, rhombus and polygonal regular figure, or irregular figure.
6. according to the spinal column dynamic connection rod described in any one in claims 1 to 3, it is characterized in that:
The described upper link (2) of described spinal column dynamic connection rod (1) and/or described lower link (3) have formed extension (11,12).
7. spinal column dynamic connection rod according to claim 6, is characterized in that:
Described extension (11) is the straight rod of rigidity (9).
8. spinal column dynamic connection rod according to claim 6, is characterized in that:
Described extension (12) has one or more the second elastic components (10).
9. spinal column dynamic connection rod according to claim 8, is characterized in that:
The structure of the structure of described the second elastic component (10) and described the first elastic component (4) is identical or different.
10. spinal column dynamic connection rod according to claim 6, is characterized in that:
The length that the length of described extension (11,12) is one or more lumbar motion segments.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210260364.4A CN103565502B (en) | 2012-07-25 | 2012-07-25 | A kind of spinal column dynamic connection rod |
| PCT/CN2013/079524 WO2014015756A1 (en) | 2012-07-25 | 2013-07-17 | Spinal column dynamic connection rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210260364.4A CN103565502B (en) | 2012-07-25 | 2012-07-25 | A kind of spinal column dynamic connection rod |
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| Publication Number | Publication Date |
|---|---|
| CN103565502A true CN103565502A (en) | 2014-02-12 |
| CN103565502B CN103565502B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210260364.4A Active CN103565502B (en) | 2012-07-25 | 2012-07-25 | A kind of spinal column dynamic connection rod |
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| Country | Link |
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| CN (1) | CN103565502B (en) |
| WO (1) | WO2014015756A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106551721A (en) * | 2015-09-30 | 2017-04-05 | 上海三友医疗器械股份有限公司 | Transverse shift nail tail, laterally adjustable section spinal bone screw and method for implantation |
| WO2017054506A1 (en) * | 2015-09-30 | 2017-04-06 | 上海三友医疗器械股份有限公司 | Transverse shifting screw-tail, laterally adjustable spinal screw and implantation method |
| CN116269699A (en) * | 2023-03-20 | 2023-06-23 | 国家康复辅具研究中心 | Spinal column growth rod system and control method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2019403451A1 (en) | 2018-12-21 | 2021-06-10 | Paradigm Spine, Llc | Modular spine stabilization system and associated instruments |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040236328A1 (en) * | 2003-05-23 | 2004-11-25 | Paul David C. | Spine stabilization system |
| CN1578644A (en) * | 2001-12-07 | 2005-02-09 | 马斯医药技术股份公司 | Vibration reducing element |
| US20090099606A1 (en) * | 2007-10-16 | 2009-04-16 | Zimmer Spine Inc. | Flexible member with variable flexibility for providing dynamic stability to a spine |
| CN101416901A (en) * | 2007-10-11 | 2009-04-29 | 比德曼莫泰赫有限公司 | Rod assembly and modular rod system for spinal stabilization |
| CN102475571A (en) * | 2010-11-30 | 2012-05-30 | 冠亚国际科技股份有限公司 | Connecting rod construction |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102106750B (en) * | 2011-02-17 | 2013-04-03 | 上海微创骨科医疗科技有限公司 | Spinal column dynamic connection rod |
-
2012
- 2012-07-25 CN CN201210260364.4A patent/CN103565502B/en active Active
-
2013
- 2013-07-17 WO PCT/CN2013/079524 patent/WO2014015756A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1578644A (en) * | 2001-12-07 | 2005-02-09 | 马斯医药技术股份公司 | Vibration reducing element |
| US20040236328A1 (en) * | 2003-05-23 | 2004-11-25 | Paul David C. | Spine stabilization system |
| CN101416901A (en) * | 2007-10-11 | 2009-04-29 | 比德曼莫泰赫有限公司 | Rod assembly and modular rod system for spinal stabilization |
| US20090099606A1 (en) * | 2007-10-16 | 2009-04-16 | Zimmer Spine Inc. | Flexible member with variable flexibility for providing dynamic stability to a spine |
| CN102475571A (en) * | 2010-11-30 | 2012-05-30 | 冠亚国际科技股份有限公司 | Connecting rod construction |
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| CN106551721A (en) * | 2015-09-30 | 2017-04-05 | 上海三友医疗器械股份有限公司 | Transverse shift nail tail, laterally adjustable section spinal bone screw and method for implantation |
| WO2017054506A1 (en) * | 2015-09-30 | 2017-04-06 | 上海三友医疗器械股份有限公司 | Transverse shifting screw-tail, laterally adjustable spinal screw and implantation method |
| CN106551721B (en) * | 2015-09-30 | 2018-10-12 | 上海三友医疗器械股份有限公司 | Laterally adjustable section spinal bone screw |
| CN116269699A (en) * | 2023-03-20 | 2023-06-23 | 国家康复辅具研究中心 | Spinal column growth rod system and control method thereof |
| CN116269699B (en) * | 2023-03-20 | 2023-12-19 | 国家康复辅具研究中心 | Spinal column growth rod system and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014015756A1 (en) | 2014-01-30 |
| CN103565502B (en) | 2015-11-25 |
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