CN102440831B - Vertebral column rod connecting device - Google Patents
Vertebral column rod connecting device Download PDFInfo
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- CN102440831B CN102440831B CN201010505024.4A CN201010505024A CN102440831B CN 102440831 B CN102440831 B CN 102440831B CN 201010505024 A CN201010505024 A CN 201010505024A CN 102440831 B CN102440831 B CN 102440831B
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- connecting rod
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Abstract
The invention relates to a vertebral column rod connecting device, in particular to an angle-adjustable vertebral column rod connecting device, which comprises a first connecting rod, a second connecting rod, an annular linear, a first connecting cup and a second connecting cup. The annular linear is used for being placed between the first connecting rod and the second connecting rod, and respectively matches with a contact surface of the first connecting rod and a contact surface of the second connecting rod, cup opening ends of the first connecting cup and the second connecting cup are provided with connecting mechanisms, and the connecting mechanism of the cup opening end of the first connecting cup and the connecting mechanism of the cup opening end of the second connecting cup are autogenously connected. The connecting mechanism of the cup opening end of the first connecting cup and the connecting mechanism of the cup opening end of the second connecting cup are mutually connected to realize autogenous connection of the connecting cups so as to form an integral cup, the size of the occupied space and structural complexity of the vertebral column rod connecting device are reduced, and simultaneously, surgery complexity is further simplified.
Description
Technical field
The present invention is relevant a kind of vertebral column rod connecting device, espespecially a kind of vertebral column rod connecting device of adjustable angle.
Background technology
In vertebra fixing operation, conventional fixed bar is as auxiliary fixing device, but because vertebra is not in line, each vertebral segments is conventionally also not parallel, and for example lumbar vertebra is lordosis (lordosis).If therefore by script fixed bar in line, directly treat that with implanting the majority of fixing vertebral segments props up nail in conjunction with being fixed into one, will the force out-of-line fixing vertebral segments for the treatment of becomes in a straight line, and make originally should not be parallel each treat that fixing vertebral segments becomes parallel.
For fear of above-mentioned disappearance, therefore medical profession proposes various structure-improveds, such as:
1. deal with problems with angled screw (angled screw), such as US-5,176,679, US-5,196,014, US-5,257,994, US-5,466,238 etc.; For example US-5,176,679 utilize angled nail (locking pins designed to have specific angles), solve above-mentioned vertebral segments conventionally and not parallel problem.But the vertebral segments that these methods are only applicable between a fixed bar and two nails is fixed (because of 2 in line), but be not suitable for a fixed bar and three (containing) vertebral segments more than nail is fixed, because 3 common out-of-line, in addition, these methods are after operation, affected part does not have dynamic function, as palintrope (extension), anteflexion (flexion), lateral bending (lateral bending), torsion (axial torsion) etc. and buffering (cushion) function.
2. deal with problems with angled fixed block (angled connector), such as US-5,257,994, US-5,330,474 etc.; For example US-5,257,994 utilize angled fixed block (locking blockdesigned to have specific angles), solve above-mentioned vertebral segments conventionally and not parallel problem.But the vertebral segments that these methods are only applicable between a fixed bar and two nails is fixed (because of 2 in line), but be not suitable for a fixed bar and three (containing) vertebral segments more than nail is fixed, because 3 common out-of-line, in addition, these methods are after operation, affected part does not have dynamic function, as palintrope (extension), anteflexion (flexion), lateral bending (lateral bending), torsion (axial torsion) etc. and buffering (cushion) function.
3. deal with problems with universal coupling apparatus (universal connecting device), such as US-5,474,551, US-5,507,746, US-5,575,791 etc.; For example US-5,474,551st, utilize universal pad fixture (a universal pad fixation device), solve above-mentioned vertebral segments conventionally and not parallel problem.But the vertebral segments that these methods are only applicable between a fixed bar and two nails is fixed (because of 2 in line), but be not suitable for a fixed bar and three (containing) vertebral segments more than nail is fixed, because 3 common out-of-line, in addition, these methods are after operation, affected part does not have dynamic function, as palintrope (extension), anteflexion (flexion), lateral bending (lateral bending), torsion (axialtorsion) etc. and buffering (cushion) function.
4. deal with problems with multi-axial screws (polyaxial screw), check and approve patent US-5 such as the U.S., 520,690, US-5,531,746 ... US-7,186,2552, US-7,207,992 etc. tens of, and relevant publication application case US-20010012937, the US-20020111626 of the U.S. ..., tens of of US-20070161995, US-20070162006 etc.This is current mainstream technology.These technology are all to utilize multi-axial screws (details is referring to this case description) substantially, solve above-mentioned vertebral segments conventionally and not parallel problem.
But the vertebral segments that above-mentioned these methods are only applicable between a fixed bar and two nails is fixed (because of 2 in line), but be not suitable for a fixed bar and three (containing) vertebral segments more than nail is fixed, because 3 common out-of-line, in addition, these methods are after operation, affected part does not have dynamic function, as palintrope (extension), anteflexion (flexion), lateral bending (lateral bending), torsion (axialtorsion) etc. and buffering (cushion) function.
5. deal with problems with artificial joint fixing device, for example TW-I275380 (details is referring to this case description), solves above-mentioned vertebral segments conventionally and not parallel problem.
These methods are after operation, though affected part has dynamic function, as palintrope (extension), anteflexion (flexion), lateral bending (lateral bending), torsion (axial torsion), but this design stability is poor and have get loose dangerous and also need to take larger space simultaneously, this design is also without cushioning (cushion) function in addition.
The inventor's etc. TaiWan, China patent TW-200936097 utilizes ball arc device and Flexible Design to make spinal fixed rod possess above-mentioned dynamic function simultaneously, as palintrope (extension), anteflexion (flexion), lateral bending (lateral bending), torsion (axial torsion) and buffering (cushion) function, but this patent is to utilize an additional hookup mechanism, allow the first cup and the second cup be linked, the space that so this spinal fixing device strengthens needs, and make comparatively inconvenience and consuming time of operation.
The present invention is except utilizing annular resilient liner, coordinate the Qiu Hu mechanism of the first connecting rod and the second connecting rod binding end, make the two adjacent connecting rods can be by annular resilient liner, adjust the object of the angle between two adjacent connecting rods and make this invention possess palintrope (extension) and reach, anteflexion (flexion), lateral bending (lateralbending), reverse the dynamic function of (axial torsion), and the present invention also utilizes the design of annular resilient liner to make this vertebral column rod connecting device possess buffering (cushion) function simultaneously, in addition the present invention also adopts the design of autologous link between two link cups, reduce the required first assembly of this vertebral column rod connecting device, and reduce its needed space simultaneously, to solve the inventor's etc. the shortcoming of TaiWan, China patent TW-200936097.
The present invention can be further by annular resilient liner, connecting rod and/or link the perforation size of cup, limited the adjustable angle of two adjacent connecting rods, make angle between two adjacent connecting rods be unlikely excessive and cause resetting or destroying the structure of this connecting rod, and then affecting the function of this bone fixation system.
Summary of the invention
An object of the present invention is to provide a kind of vertebral column rod connecting device.
Another object of the present invention is to provide a kind of vertebral column rod connecting device with ring-type liner.
Another object of the present invention is to provide a kind of vertebral column rod connecting device with annular resilient liner.
A further object of the present invention is to provide a kind of vertebral column rod connecting device that cup is autologous link that links.
Another object of the present invention is to provide one to utilize ball arc structure, form the vertebral column rod connecting device of universal combination.
A further object of the present invention is to provide a kind of vertebral column rod connecting device with spring function.
Another object of the present invention is to provide a kind of vertebral column rod connecting device with dynamic function.
An also object of the present invention is to provide a kind of vertebral column rod connecting device of adjustable angle.
Another object of the present invention is to provide a kind of vertebral column rod connecting device with pooling feature.
A further object of the present invention is to provide a kind of limited control to adjust the vertebral column rod connecting device of angle.
Vertebral column rod connecting device of the present invention, it comprises:
The first connecting rod, its at least one end be binding end, the outside balling-up arcuation in fact at the nearly rod end of this binding end place, its rod end has a contact surface;
The second connecting rod, its at least one end be binding end, the outside balling-up arcuation in fact at the nearly rod end of this binding end place, its rod end has a contact surface;
One ring-type liner, it is in order to be positioned between described the first connecting rod and described the second connecting rod, and this ring-type liner coordinates with the contact surface of described the first connecting rod and the contact surface of described the second connecting rod respectively;
First links cup, the cup-mouth end of cup has connect mechanism, this bottom of cup inner side at least part becomes in fact spherical arc shape, this ball arc curvature is slightly less than or equals in fact the ball arc curvature in the outside, the nearly rod end of binding end place of described the first connecting rod, in order to become universal combination with the ball arc in the nearly rod end of the binding end place outside of described the first connecting rod, this bottom of cup has a perforation, uses so that the rod end of described the first connecting rod passes outside by this link cup inside; And
Second links cup, the cup-mouth end of cup has connect mechanism, this bottom of cup inner side at least part becomes in fact spherical arc shape, this ball arc curvature is slightly less than or equals in fact the ball arc curvature in the outside, the nearly rod end of binding end place of described the second connecting rod, in order to become universal combination with the ball arc in the nearly rod end of the binding end place outside of described the second connecting rod, this bottom of cup has a perforation, with so that the rod end of described the second connecting rod passes outside by this link cup inside, the wherein said first cup-mouth end connect mechanism and the described second cup-mouth end connect mechanism that links cup that links cup forms autologous link.
The autologous link of above-mentioned link cup, it is to utilize the cup-mouth end connect mechanism of the first link cup and the second cup-mouth end connect mechanism that links cup mutually to link formation one complete cup, to reduce the structure complexity of this vertebral column rod connecting device, and lower the shared space size of vertebral column rod connecting device, also further simplify the complexity of operation simultaneously.
Above-mentioned link cup, its autologous link can be known mode of connection arbitrarily, links, screws togather link, sealed link, engaging link or node link (please refer to Fig. 4 c, 4d) as fastened.
Above-mentioned link cup, its perforation shape is also unrestricted, but with circular hole for better, its circle hole radius is slightly larger than or equals the round bar end radius of described connecting rod, with the round bar end radius that is slightly larger than described connecting rod for better, with so that described connecting rod can be in perforation universal rotational, and can limit the angular dimension that described connecting rod rotates by the size of described perforation.
Above-mentioned connecting rod, its can be two ends be all binding end or only one end be binding end, the contact surface of wherein said connecting rod binding end can have a Qiu Hu mechanism, Gai Qiu arc mechanism can be spherical cambered surface to spherical cambered surface, ball arc projection to ball arc projection, ball arc fluting to ball arc projection (please refer to Fig. 2 b), with ball arc fluting to ball arc projection for better.Wherein this two adjacent connecting rod can be by the Qiu Hu mechanism of connecting rod binding end each other, makes can relatively rotate between two adjacent connecting rods, and reaches the object of adjusting the angle between two adjacent connecting rods.The ball arc fluting of wherein said connecting rod binding end contact surface and ball arc projection are other can have an adjustment plane, this adjustment plane can be the adjustment plane of any known type, as tilt adjustments plane, arcuation are adjusted plane etc., allow and can carry out limited angular by this clinoplain between two adjacent connecting rods, make angle between two adjacent connecting rods be unlikely excessive and cause resetting or destroying the structure of this connecting rod, and then affecting the function of this vertebral column rod connecting device.
Above-mentioned connecting rod, itself and binding end can be one of the forming, or for example, are combined into one with arbitrarily known combination (engage, screw togather, sealed etc.).The roughly the same known spinal fixed rod of wherein said connecting rod, with round bar shape for better.
The outside at the above-mentioned nearly rod end of connecting rod binding end place becomes universal combination with the spherical arc shape of described link bottom of cup inner side, described connecting rod can be relatively rotated by spherical cambered surface each other in described link cup, and reach adjust the angle between two adjacent connecting rods object (referring to Fig. 2 b).
This vertebral column rod connecting device can link with known arbitrarily bone anchoring device, this bone anchoring device in order to the carrier that the connecting rod shaft of this vertebral column rod connecting device is fixed on to this bone anchoring device (referring to Fig. 2 a), this bone anchoring device can be known nail (it can be single shaft nail mono-axial screw or multiaxis nail poly-axial screw), similar bone anchoring device (such as hamulus of hamate bone-hook etc.), auxiliary bone anchoring device (such as lateral mass-side block etc.), or rotation nail (referring to another TaiWan, China patent TW-99100438 such as the inventor), with nail or rotation nail for better.The combination of this bone anchoring device and connecting rod can be the fixed form of known fixed bar and nail, hamulus of hamate bone or lateral mass etc., for example, directly screw togather or engaging etc.
Above-mentioned ring-type liner, can be the annular resilient liner with spring function, this annular resilient liner is in order to be installed between two adjacent connecting rods, make to have between two adjacent connecting rods the function of buffering, allow patient in the time of postoperative activity, two adjacent connecting rods can slow down the impulse force that two adjacent connecting rods bear by annular resilient liner, instead of bear all pressure by the joint perfecting completely, and this may accelerate the aging of contiguous joint.
Above-mentioned annular resilient liner, it can be known annular resilient liner arbitrarily, as the hollow and annular elastic insert of similar doughnut shape, multiple-piece annular resilient liner, groove type annular resilient, ring-like wavy liner (please refer to Fig. 3 e, 3f) or spring, this spring with saucerspring for better.Above-mentioned this ring-like wavy liner can be the ring-like wavy liner of monolayer (please refer to Fig. 3 e) or the ring-like wavy liner of multilamellar (please refer to Fig. 3 f), this ring-like wavy liner can, by its wave-like, have spring function.
Above-mentioned annular resilient liner can further add an elastomeric material and strengthen its spring function, wherein this elastomeric material such as plastics (Polyurethane, poly-silica or PEEK), PE, UHMWPE, polymer, rubber or composite (meaning is made up of two or more material) etc. (please refer to Fig. 3 c), wherein this annular resilient liner can be one and has the annular resilient liner of plane of adjustment, is beneficial to the angle adjustment between this annular resilient liner and connecting rod.
Above-mentioned bone anchoring device can link with holder, and this holder can be arbitrarily known holder, and in order to be combined with the carrier of bone anchoring device, wherein this combination can be known fixed form arbitrarily, as sealed, engage, screw togather etc., to screw togather as better.
Above-mentioned connecting rod is fixed on the fixed form of the carrier of this bone anchoring device, and it can be arbitrarily known fixed form, as screws togather fixing (traditional nail and rod member screw togather links), locks and fix or be fixed etc.
Above-mentioned bone anchoring device, connecting rod, link cup, annular resilient liner or holder, its material can be selected and anyly be approved and applicable bone material, as the metal material of human implantable, such as iron Stainless steel 316 LVM (stainless steel 316LVM), titanium base material Ti-6Al-4V and vitallium etc.
Above-mentioned connecting rod, it also can further configure a link sleeve to link two adjacent connecting rods (please refer to Fig. 5), and adjusts distance between two adjacent connecting rods to coordinate the spacing between different vertebras by linking sleeve.
Brief description of the drawings
Fig. 1 is vertebral column rod connecting device one preferred embodiment decomposing schematic representation of the present invention.
Fig. 2 a is vertebral column rod connecting device one preferred embodiment generalized section of the present invention.
Fig. 2 b is that Fig. 2 a connecting rod rotates schematic diagram.
Fig. 3 a, 3b, 3c, 3d, 3e, 3f are respectively the preferred embodiment schematic diagram of the hookup mechanism annular resilient liner of spinal fixation system of the present invention.
Fig. 4 a, 4b, 4c, 4d are the preferred embodiment schematic diagram that 4 kinds of vertebral column rod connecting devices of the present invention link cup combination.
Fig. 5 is the preferred embodiment schematic diagram of the multisection type connecting rod of vertebral column rod connecting device of the present invention.
Fig. 6 is the preferred embodiment schematic diagram that vertebral column rod connecting device of the present invention is assembled in joint.
Fig. 7 is another visual angle schematic diagram of Fig. 6.
Reference numeral
100 link cup 110 first links cup 120 second link cups
130 binodes link 140 single node and link 200 annular resilient liners
210 elastomer 310 first connecting rod 311 ball arc projections
312 outside, nearly rod end place 313 tilt adjustments plane 320 second connecting rods
321 ball arc projection 322 outside, nearly rod end place 323 tilt adjustments planes
330 the 3rd connecting rod 340 the 4th connecting rod 350 sleeves
360 sleeve 410 screw division 420 carriers
500 holder 610 joint 620 joints
630 joints
Detailed description of the invention
Fig. 1 is vertebral column rod connecting device one preferred embodiment decomposing schematic representation of the present invention.The first connecting rod 310 and the second connecting rod 320 link cup 110 and second through first respectively and link cup 120, and annular resilient liner 200 is positioned between the first connecting rod 310 and the second connecting rod 320, because of the outside, nearly rod end place 312 of the first connecting rod 310 and the second connecting rod 320, 322 are greater than the perforation that the first link cup 110 and second links cup 120, therefore the first connecting rod 310 and the second connecting rod 320 will can slippage not go out to link cup, first link cup 110 with second link cup 120 by autologous connect mechanism by the first connecting rod 310, the second connecting rod 320 and annular resilient liner 200 are coated among described link cup, the ball arc projection 311 of the first connecting rod 310 and the ball arc fluting 321 of the second connecting rod 320 (please refer to Fig. 2 b) by Qiu Hu mechanism each other, make can relatively rotate between connecting rod, to adjust the angle between two adjacent connecting rods, and further utilize the spring function of annular resilient liner 200, allow and between two adjacent connecting rods, there is the function of buffering, make patient in the time of postoperative activity, two adjacent connecting rods can slow down the impulse force that two adjacent connecting rods bear by the annular resilient liner 200 with spring function.Wherein link the perforation size of cup and/or the angle of annular resilient liner 200, in order to limit the adjustable angle of two adjacent connecting rods, make angle between two adjacent connecting rods be unlikely excessive and cause resetting or destroying the structure of this connecting rod, and then affecting the function of this vertebral column rod connecting device.The outside, nearly rod end place 312 of the first connecting rod 310 and the outside, nearly rod end place 322 of the second connecting rod 320 are ball arc, connecting rod can be relatively rotated by spherical cambered surface each other in linking bottom of cup inner side, and reach the object of adjusting the angle between two adjacent connecting rods.
Fig. 2 a is vertebral column rod connecting device one preferred embodiment generalized section of the present invention.Link cup 100 coated the first connecting rod 310, annular resilient liner 200 and the second connecting rod 320, the ball arc projection 311 of the first connecting rod 310 and the ball arc fluting 321 of the second connecting rod 320 (please refer to Fig. 2 b) by Qiu Hu mechanism each other, make can relatively rotate between two adjacent connecting rods, to adjust the angle between connecting rod.The angle of inclination size of the tilt adjustments plane 313,323 of connecting rod and the angle of inclination size of the adjustment plane of annular resilient liner 200, in order to limited adjustment angle each other.Holder 500 is fixed on connecting rod shaft in carrier 420.
Fig. 2 b is that Fig. 2 a connecting rod rotates schematic diagram.
Fig. 3 a, 3b, 3c, 3d, 3e, 3f are respectively the preferred embodiment schematic diagram of the hookup mechanism annular resilient liner of spinal fixation system of the present invention.Fig. 3 a shows: annular resilient liner 200 is the shape of similar hollow doughnut.Fig. 3 b shows: annular resilient liner 200 is groove type annular resilient liner.Fig. 3 c shows: annular resilient liner 200 is multiple-piece annular resilient liner, the function that elastomer 210 is adjusted in order to strengthen its elasticity.Fig. 3 d shows: annular resilient liner 200 is spring.Fig. 3 e shows: annular resilient liner 200 is the ring-like wavy liner of monolayer.Fig. 3 f shows: annular resilient liner 200 is the ring-like wavy liner of multilamellar.
Fig. 4 a, 4b, 4c, 4d are the preferred embodiment schematic diagram that 4 kinds of vertebral column rod connecting devices of the present invention link cup.Fig. 4 a shows: the first link cup 110 and second links between cup 120 and links with screw-in version.Fig. 4 b shows: the first link cup 110 and second links between cup 120 and links to engage mode.Fig. 4 c shows: link cup 100 and link 130 by binode, by the coated connecting rod in side and annular resilient liner 200, and fix in engaging mode.Fig. 4 d shows: link cup 100 and link 140 by single node, by the coated connecting rod in side and annular resilient liner 200, and fix in engaging mode.
Fig. 5 is the preferred embodiment schematic diagram of the multisection type connecting rod of vertebral column rod connecting device of the present invention.Between the first connecting rod 310 and sleeve 360, link with screw-in version, and adjust length with this, wherein roughly the same the first connecting rod 310 and sleeve 360 of the link of the second rod member 320 and sleeve 350.
Fig. 6 is the preferred embodiment schematic diagram that vertebral column rod connecting device of the present invention is assembled in joint.Apparatus of the present invention are in vertebral segments, and annular resilient liner 200 is positioned between two adjacent connecting rods, in order to adjust the angle of two adjacent connecting rods.
Fig. 7 is another visual angle schematic diagram of Fig. 6.
Claims (9)
1. a vertebral column rod connecting device, it comprises:
The first connecting rod, its one end is binding end, the other end is rod end, the outside balling-up arcuation of this binding end, the inner side of its binding end has a contact surface;
The second connecting rod, its one end is binding end, the other end is rod end, the outside balling-up arcuation of this binding end, the inner side of its binding end has a contact surface;
One ring-type liner, it is in order to be positioned between described the first connecting rod and described the second connecting rod, and this ring-type liner coordinates with the contact surface of described the first connecting rod and the contact surface of described the second connecting rod respectively;
First links cup, this first cup-mouth end that links cup has connect mechanism, this first bottom inside that links cup becomes spherical arc shape at least partly, the curvature of this ball arc is less than or equal to the ball arc curvature in the binding end outside of described the first connecting rod, in order to become universal combination with the ball arc in the binding end outside of described the first connecting rod, this first bottom that links cup has a perforation, uses so that the rod end of described the first connecting rod passes outside by this first link cup inside; And
Second links cup, this second cup-mouth end that links cup has connect mechanism, this second bottom inside that links cup becomes spherical arc shape at least partly, the curvature of this ball arc is less than or equal to the ball arc curvature in the outside, the nearly rod end of binding end place of described the second connecting rod, in order to become universal combination with the ball arc in the binding end outside of described the second connecting rod, this second bottom that links cup has a perforation, with so that the rod end of described the second connecting rod by this second link cup inside pass outside, the connect mechanism that the wherein said first connect mechanism and described second that links the cup-mouth end of cup links the cup-mouth end of cup forms the link that cooperatively interacts.
2. vertebral column rod connecting device as claimed in claim 1, the contact surface of wherein said the first connecting rod binding end has a Qiu Hu mechanism, and the contact surface of described the second connecting rod binding end has a Qiu Hu mechanism.
3. vertebral column rod connecting device as claimed in claim 2 is the corresponding spherical cambered surface of spherical cambered surface between the Qiu Hu mechanism of wherein said the first connecting rod and the Qiu Hu mechanism of the second connecting rod.
4. vertebral column rod connecting device as claimed in claim 3 is the corresponding ball arc of ball arc fluting projection between the Qiu Hu mechanism of wherein said the first connecting rod and the Qiu Hu mechanism of the second connecting rod.
5. vertebral column rod connecting device as claimed in claim 2 or claim 3, the Qiu Hu mechanism side of the contact surface of wherein said the first connecting rod binding end has an adjustment plane, the Qiu Hu mechanism side of the contact surface of described the second connecting rod binding end has an adjustment plane, the adjustment plane of this first connecting rod and the second connecting rod is the adjustment plane with angle of inclination, allows and limits the rotational angle between two adjacent the first connecting rods and the second connecting rod by this adjustment plane between two adjacent the first connecting rods and the second connecting rod and ring-type liner.
6. vertebral column rod connecting device as claimed in claim 1, wherein said ring-type liner is annular resilient liner.
7. vertebral column rod connecting device as claimed in claim 6, wherein this annular resilient liner is hollow and annular elastic insert, multiple-piece annular resilient liner, groove type annular resilient liner, ring-like wavy liner, spring or the elastic insert that pours into elastomeric material in annular resilient liner.
8. vertebral column rod connecting device as claimed in claim 7, wherein this spring is saucerspring.
9. a vertebral column rod connecting device, it comprises:
The first connecting rod, its one end is binding end, the other end is stiff end, the outside balling-up arcuation of this binding end, the inner side of this binding end has a contact surface;
The second connecting rod, its one end is binding end, the other end is stiff end, the outside balling-up arcuation of this binding end, the inner side of this binding end has a contact surface;
One ring-type liner, it is in order to be positioned between described the first connecting rod and described the second connecting rod, and this ring-type liner coordinates with the contact surface of described the first connecting rod and the contact surface of described the second connecting rod respectively;
One sleeve, its two ends are all abutting end;
First links cup, this first cup-mouth end that links cup has connect mechanism, this first bottom inside that links cup becomes spherical arc shape at least partly, the curvature of this ball arc is less than or equal to the ball arc curvature in the binding end outside of described the first connecting rod, in order to become universal combination with the ball arc in the binding end outside of described the first connecting rod, this first bottom that links cup has a perforation, with so that the stiff end of described the first connecting rod first link cup inside and pass outside, the wherein stiff end of this first connecting rod and the abutting end of this sleeve link by this; And
Second links cup, this second cup-mouth end that links cup has connect mechanism, this second bottom inside that links cup becomes spherical arc shape at least partly, the curvature of this ball arc is less than or equal to the ball arc curvature in the binding end outside of described the second connecting rod, in order to become universal combination with the ball arc in the binding end outside of described the second connecting rod, this second bottom that links cup has a perforation, with so that the stiff end of described the second connecting rod by this second link cup inside pass outside, the wherein said first connect mechanism and this second connect mechanism that links the cup-mouth end of cup that links the cup-mouth end of cup forms the link that cooperatively interacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010505024.4A CN102440831B (en) | 2010-10-09 | 2010-10-09 | Vertebral column rod connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010505024.4A CN102440831B (en) | 2010-10-09 | 2010-10-09 | Vertebral column rod connecting device |
Publications (2)
| Publication Number | Publication Date |
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| CN102440831A CN102440831A (en) | 2012-05-09 |
| CN102440831B true CN102440831B (en) | 2014-08-13 |
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| CN201010505024.4A Expired - Fee Related CN102440831B (en) | 2010-10-09 | 2010-10-09 | Vertebral column rod connecting device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105361936A (en) * | 2014-09-01 | 2016-03-02 | 圣美智财有限公司 | Spinal rod piece linking device |
| CN106236231A (en) * | 2016-07-04 | 2016-12-21 | 威海市妇幼保健院 | A kind of spinal column dynamic connection rod |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100579476C (en) * | 2004-06-15 | 2010-01-13 | 华沙整形外科股份有限公司 | Spinal rod system |
| US7794477B2 (en) * | 2004-10-05 | 2010-09-14 | Warsaw Orthopedic, Inc. | Spinal implants and methods with extended multi-axial anchor assemblies |
| CN201230898Y (en) * | 2008-07-21 | 2009-05-06 | 冠亚生技股份有限公司 | Multi-shaft vertebra fixation lever |
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