CN104287818A - Length-adjustable vertebral plate - Google Patents
Length-adjustable vertebral plate Download PDFInfo
- Publication number
- CN104287818A CN104287818A CN201410593869.1A CN201410593869A CN104287818A CN 104287818 A CN104287818 A CN 104287818A CN 201410593869 A CN201410593869 A CN 201410593869A CN 104287818 A CN104287818 A CN 104287818A
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- Prior art keywords
- connecting portion
- length
- vertebral plate
- groove
- plate
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Classifications
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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
- A61B17/7071—Implants for expanding or repairing the vertebral arch or wedged between laminae or pedicles; Tools therefor
-
- 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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8023—Variable length plates adjustable in both directions
-
- 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
-
- 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
- A61B17/7059—Cortical plates
-
- 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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
Abstract
The invention discloses a length-adjustable vertebral plate. The length-adjustable vertebral plate comprises a first split plate and a second split plate, wherein the first split plate comprises a first supporting portion and a first connecting portion, the second split plate comprises a second supporting portion and a second connecting portion, the first connecting portion and the second connecting portion are connected in a clamping mode or connected and fixed through a connecting piece, and two or more connecting and fixing positions are reserved between the first connecting portion and the second connecting portion. The length-adjustable vertebral plate realizes length adjustment, greatly reduces preparation amount, relieves the burden of a patient, and meanwhile reduces waste of resources.
Description
Technical field
The present invention relates to posterior cervical Occipitocervical fussion auxiliary implement used, particularly relate to a kind of length-adjustable vertebral plate.
Background technology
At present, posterior cervical Laminoplasty is a kind of comparatively conventional modus operandi for the treatment of cervical spondylosis, needs in this approach to use cervical vertebra plate.Due to the individual variation of patient, the cervical vertebra plate length needed for each operation is different, and existing cervical vertebra plate includes multiple specification, to be a specification difference with every two mm length differences, usually needs the cervical vertebra plate of three kinds of specifications for subsequent use when performing the operation.This mode cause production firm and logistics stock preparation more, hospital inventory and circulation also increase, and this adds increased production and management cost, objectively improve medical treatment cost, also result in great waste while making patients's burden, therefore industry is badly in need of solving this problem.
Summary of the invention
For problems of the prior art, object of the present invention is for providing a kind of structure simple, easy to operate and fixing reliable length-adjustable vertebral plate.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of length-adjustable vertebral plate, comprise first point of plate and quarter stuff, described first point of plate comprises the first support portion and the first connecting portion, described quarter stuff comprise the second support portion and the second connecting portion, clamping or be connected and fixed by connector between described first connecting portion and described second connecting portion, and the position that is connected and fixed between described first connecting portion and described second connecting portion is two or more.
Further, described first connecting portion includes elasticity draw-in groove, described elasticity draw-in groove one wall is provided with projection in the two or more of stretching to described elasticity draw-in groove convex, described second connecting portion includes elasticity snap arm, described elasticity snap arm and described elasticity draw-in groove match, and the arm face of the corresponding described interior projection of described elasticity snap arm is provided with the outer groove of two or more, described outer groove and described interior projection match.
Further, before and after between arbitrary described outer groove and arbitrary described interior projection two in mating surface, wherein one side is the guiding face of relative motion between the described interior projection of guiding and described outer groove, and another side is the thrust surface of relative motion between the described interior projection of restriction and described outer groove.
Further, the cross section of described outer groove and described interior projection is right-angled trapezium.
Further, described elasticity draw-in groove arranges the wall of described interior projection is suspended wall.
Further, in the middle part of described elasticity snap arm, be provided with the groove extended longitudinally, thus described elasticity snap arm be divided into two, the left and right part that only end is connected.
Further, described first connecting portion is provided with screwed hole, described second connecting portion is provided with the first strip hole, to enable a connection piece head be pressed against described first strip hole two side plane, bar portion is through screwed hole described in described first strip hole accessory.
Further, described first connecting portion is also provided with the second strip hole, the width of described second strip hole is less than described first strip hole.
Further, described first support portion and described second support portion are provided with one with upper bolt aperture, and described screw hole is ball-and-socket type hole.
Further, the material of described first point of plate and described quarter stuff is medical titanium, titanium alloy, rustless steel or bioabsorbable material, and described bioabsorbable material is selected from the one in the biological absorbable high polymers such as polylactic acid, poly-epsilon-caprolactone, Poly(D,L-lactide-co-glycolide, PHA.
Tool of the present invention has the following advantages:
Vertebral plate of the present invention adopts Split type structure, adopt first point of plate and quarter stuff, wherein the first connecting portion and the second connecting portion be connected and fixed position two or more, thus when first point of plate is connected with quarter stuff, overall vertebral plate length is changed, and adopt clamping or simple, easy to operate and reliably fixing by the mode structure that connector is fixing, therefore the present invention achieves the adjustable length of vertebral plate easily, stock amount greatly reduces, and patient burden also reduces the waste of resource while declining.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Fig. 1 is a kind of length-adjustable vertebral plate first embodiment perspective view of the present invention;
Fig. 2 is a kind of length-adjustable vertebral plate first embodiment sectional structure schematic diagram of the present invention;
Fig. 3 is first point of plate perspective view in a kind of length-adjustable vertebral plate first embodiment of the present invention;
Fig. 4 is first point of plate sectional structure schematic diagram in a kind of length-adjustable vertebral plate first embodiment of the present invention;
Fig. 5 is quarter stuff perspective view in a kind of length-adjustable vertebral plate first embodiment of the present invention;
Fig. 6 is a kind of length-adjustable vertebral plate first embodiment length adjustment state one perspective view of the present invention;
Fig. 7 is the main TV structure schematic diagram of a kind of length-adjustable vertebral plate first embodiment length adjustment state one of the present invention;
Fig. 8 is a kind of length-adjustable vertebral plate first embodiment length adjustment state two perspective view of the present invention;
Fig. 9 is the main TV structure schematic diagram of a kind of length-adjustable vertebral plate first embodiment length adjustment state two of the present invention;
Figure 10 is first point of plate perspective view in a kind of length-adjustable vertebral plate second embodiment of the present invention;
Figure 11 is quarter stuff perspective view in a kind of length-adjustable vertebral plate second embodiment of the present invention;
Figure 12 is a kind of length-adjustable vertebral plate second embodiment length adjustment state one perspective view of the present invention;
Figure 13 is a kind of length-adjustable vertebral plate second embodiment length adjustment state two perspective view of the present invention;
Figure 14 is the connecting-piece structure schematic diagram used in a kind of length-adjustable vertebral plate second embodiment of the present invention.
Detailed description of the invention
The exemplary embodiments embodying feature & benefits of the present invention will describe in detail in the following description.Be understood that the present invention can have various changes in different embodiments, it neither departs from the scope of the present invention, and explanation wherein and accompanying drawing are the use when explain in itself, and is not used to limit the present invention.
Length-adjustable vertebral plate of the present invention, comprise first point of plate and quarter stuff, first point of plate comprises the first support portion and the first connecting portion, quarter stuff comprise the second support portion and the second connecting portion, clamping or fixed by connector between first connecting portion and the second connecting portion, and the position that is connected and fixed between the first connecting portion and the second connecting portion is two or more.This kind of Split type structure by the link position between adjustment first connecting portion and the second connecting portion, can adjust the link position of first point of plate and quarter stuff, thus changes the length of overall vertebral plate.Below, for convenience of deeply dissecting structure of the present invention, spy does to launch explanation in conjunction with two specific embodiments.
First embodiment
The vertebral plate structure of the present embodiment as depicted in figs. 1 and 2, comprises first point of plate 1 and quarter stuff 2.Wherein, first point of plate 1 comprises the first support portion 11 and the first connecting portion 12, is usually formed as one between this first support portion 11 and first connecting portion 12 for convenience of processing; Quarter stuff 2 comprise the second support portion 21 and the second connecting portion 22, are usually formed as one between this second support portion 21 and second connecting portion 22 for convenience of processing.First support portion 11 and the second support portion 21 are all processed with screw hole 10, and the quantity of the screw hole 10 as required on the first support portion 11 and the second support portion 21 can be one, two and three, is two shown in figure in the present embodiment.For convenience of coordinating with screw head, this screw hole 10 is ball-and-socket type hole.Usual first support portion 11 is parallel or coplanar with the supporting surface of the second support portion 21, and therefore the overall structure of vertebral plate of the present invention is broken line type or yi word pattern, is broken line type as shown in the figure in the present embodiment.In the present embodiment, the making material of first point of plate 1 and quarter stuff 2 can be any one in medical titanium, titanium alloy, rustless steel and bioabsorbable material, and this bioabsorbable material is selected from the biological absorbable high polymer materials such as polylactic acid (PLA), poly-epsilon-caprolactone (PCL), Poly(D,L-lactide-co-glycolide (PLGA), PHA (PHA).
In the present embodiment, the structure of first point of plate 1 as shown in Figure 3 and Figure 4, and the first connecting portion 12 includes elasticity draw-in groove 120.This elasticity draw-in groove 120 is a rectangular channel, openings and the first support portion 11 opposing.Upper wall surface shown in the figure of elasticity draw-in groove 120 is provided with interior projection 124, and the quantity of this interior projection 124 is 3, and bearing of trend for protrude out in elasticity draw-in groove 120, is formed with inner groovy 125 in office two between projection 124.Two grooves 122,123 are longitudinally offered in the left and right sides of this upper wall surface 121 of elasticity draw-in groove 120, this two groove 122,123 all passes into elasticity draw-in groove 120 from lateral surface, and two groove 122,123 length are identical, make this upper wall surface 121 become a suspended wall with this, therefore this upper wall surface 121 has certain elasticity.
In the present embodiment, the structure of quarter stuff 2 as shown in Figure 5, and the second connecting portion 22 includes elasticity snap arm 220, and elasticity snap arm 220 is string configuration, is equipped with mutually stretches in elasticity draw-in groove 120 with elasticity draw-in groove 120.The area of section of elasticity snap arm 220 is less than the cross section of the second connecting portion 22, the groove 223 extended longitudinally is provided with in the middle part of elasticity snap arm 220, thus elasticity snap arm 220 is divided into two, the left and right part that only end is connected, thus make two parts all have higher elasticity, and two clip structures can be formed, improve the reliability of the first connecting portion 12 and the second connecting portion 22 clamping.In elasticity snap arm 220 is corresponding projection 124 arm face on be also provided with 3 outer projections 222 (quantity of outer projection 222 determined to coordinate inner groovy 125 to establish herein, outer groove 221 is formed between two outer projections 222 in office, this outer groove 221 matches with interior projection 124, to form the structure of mutual clamping.
In the present embodiment, before and after between arbitrary outer groove 221 and arbitrary interior projection 124 two in mating surface, wherein one side is guiding face, and another side is thrust surface.Be specially and facilitate machine-shaping, this outer groove 221 is right-angled trapezium with the cross section of interior projection 124.This structure can realize unidirectional slip when the first connecting portion 12 and the second connecting portion 22 connect and fix, and changes mated condition, thus changes vertebral plate entire length.In fact, also can be the structure that two sides is guiding face, namely two mating surfaces be inclined-plane, and this shape can change according to actual needs, is not defined as inclined-plane, and such as cambered surface is also fine.
In the present embodiment, length variations is as shown in Fig. 6-Fig. 9, Fig. 6 and Fig. 7 shows the first length variations state, Fig. 8 and Fig. 9 shows the second length variations state.Generally for and existing uniform specification, outer groove 221 and interior projection 124 length of fit are 2mm, and also namely often adjust length variations two millimeters, can realize three kinds of different lengths adjustment in the present embodiment, adjusting range is 0-6mm.Certain specification non-fully limit, and are not limited to 2mm specification in practical operation, also can 1mm specification, deisgn product structure according to specific needs, and adjusting range is not limited to 6mm.
This structure is can not bone grafting structure, but also can be designed as can bone grafting structure, the first connecting portion can in the middle of fluting, bone screw can be through, fixing plant bone mass.
Second embodiment
In the present embodiment, as shown in Figure 12 and Figure 13, vertebral plate of the present invention comprises first point of plate 1 and quarter stuff 2 too, making material can be any one in medical titanium, titanium alloy, rustless steel and bioabsorbable material, and this bioabsorbable material is selected from the biological absorbable high polymer materials such as polylactic acid (PLA), poly-epsilon-caprolactone (PCL), Poly(D,L-lactide-co-glycolide (PLGA), PHA (PHA).The quantity of the screw hole 10 on the first support portion 11 and the second support portion 21 can be one, two and three, is two shown in figure in the present embodiment.For convenience of coordinating with screw head, this screw hole 10 is ball-and-socket type hole.Usual first support portion 11 is parallel or coplanar with the supporting surface of the second support portion 21, and therefore the overall structure of vertebral plate of the present invention is broken line type or yi word pattern, is broken line type as shown in the figure in the present embodiment.
In the present embodiment, as shown in Figure 10, the first connecting portion 12 of first point of plate 1 is provided with screwed hole 126, as shown in figure 11, the second connecting portion 22 of quarter stuff 2 is provided with the first strip hole 226.As shown in figure 14, this connector 3 can be screw or nut to the structure of connector 3 in the present embodiment.With reference to Figure 10 and Figure 11, the bar portion of this connector 3 is through the first strip hole 226 accessory screwed hole 126, and the head tightening rear connectors 3 is pressed against two side planes of the first strip hole 226, and the first connecting portion 12 and the second connecting portion 22 are linked together.When needs adjustment length, unscrew this connector 3, and move to correct position along the first strip hole 226, and then tighten connector 3, thus complete a length adjustment.It adjusts state, with reference to shown in Figure 12 and Figure 13, and the syndeton of this two first connecting portion 12 when there is shown diverse location state and the second connecting portion 22.
In addition, in the present embodiment, be connected with fixing plant bone mass for convenience of vertebral plate of the present invention, first connecting portion 12 is also provided with the second strip hole 127, the width of the second strip hole 127 is less than the first strip hole 226, during to facilitate fixing by screw by the first strip hole 226, and make head of screw be pressed against two side planes of the second strip hole 127.
In sum, vertebral plate of the present invention adopts Split type structure, adopt first point of plate 1 and quarter stuff 2, wherein the first connecting portion 12 and the second connecting portion 22 be connected and fixed position two or more, thus when first point of plate 1 is connected with quarter stuff 2, overall vertebral plate length is changed, and adopt clamping or simple, easy to operate and reliably fixing by the mode structure that connector 3 is fixing, therefore the present invention achieves the adjustable length of vertebral plate easily, stock amount greatly reduces, and patient burden also reduces the waste of resource while declining.
Technical scheme of the present invention is disclosed as above by preferred embodiment.The change that those skilled in the art do when should recognize the scope and spirit of the present invention disclosed in the claim do not departed from appended by the present invention and retouching, within the protection domain all belonging to claim of the present invention.
Claims (10)
1. a length-adjustable vertebral plate, it is characterized in that, comprise first point of plate and quarter stuff, described first point of plate comprises the first support portion and the first connecting portion, described quarter stuff comprise the second support portion and the second connecting portion, clamping or be connected and fixed by connector between described first connecting portion and described second connecting portion, and the position that is connected and fixed between described first connecting portion and described second connecting portion is two or more.
2. length-adjustable vertebral plate as claimed in claim 1, it is characterized in that, described first connecting portion includes elasticity draw-in groove, described elasticity draw-in groove one wall is provided with projection in the two or more of stretching to described elasticity draw-in groove convex, described second connecting portion includes elasticity snap arm, described elasticity snap arm and described elasticity draw-in groove match, and the arm face of the corresponding described interior projection of described elasticity snap arm is provided with the outer groove of two or more, and described outer groove and described interior projection match.
3. length-adjustable vertebral plate as claimed in claim 2, it is characterized in that, before and after between arbitrary described outer groove and arbitrary described interior projection two in mating surface, wherein one side is the guiding face of relative motion between the described interior projection of guiding and described outer groove, and another side is the thrust surface of relative motion between the described interior projection of restriction and described outer groove.
4. length-adjustable vertebral plate as claimed in claim 3, is characterized in that, the cross section of described outer groove and described interior projection is right-angled trapezium.
5. length-adjustable vertebral plate as claimed in claim 2, is characterized in that, the wall that described elasticity draw-in groove arranges described interior projection is suspended wall.
6. length-adjustable vertebral plate as claimed in claim 5, is characterized in that, is provided with the groove extended longitudinally in the middle part of described elasticity snap arm, thus described elasticity snap arm is divided into two, the left and right part that only end is connected.
7. length-adjustable vertebral plate as claimed in claim 1, it is characterized in that, described first connecting portion is provided with screwed hole, described second connecting portion is provided with the first strip hole, to enable a connection piece head be pressed against described first strip hole two side plane, bar portion is through screwed hole described in described first strip hole accessory.
8. length-adjustable vertebral plate as claimed in claim 7, is characterized in that, described first connecting portion is also provided with the second strip hole, and the width of described second strip hole is less than described first strip hole.
9. the length-adjustable vertebral plate as described in as arbitrary in claim 1-8, is characterized in that, described first support portion and described second support portion are provided with one with upper bolt aperture, and described screw hole is ball-and-socket type hole.
10. the length-adjustable vertebral plate as described in as arbitrary in claim 1-8, it is characterized in that, the material of described first point of plate and described quarter stuff is medical titanium, titanium alloy, rustless steel or bioabsorbable material, and described bioabsorbable material is selected from the one in the biological absorbable high polymers such as polylactic acid, poly-epsilon-caprolactone, Poly(D,L-lactide-co-glycolide, PHA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410593869.1A CN104287818B (en) | 2014-10-29 | 2014-10-29 | Length-adjustable vertebral plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410593869.1A CN104287818B (en) | 2014-10-29 | 2014-10-29 | Length-adjustable vertebral plate |
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| Publication Number | Publication Date |
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| CN104287818A true CN104287818A (en) | 2015-01-21 |
| CN104287818B CN104287818B (en) | 2017-04-19 |
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| CN201410593869.1A Active CN104287818B (en) | 2014-10-29 | 2014-10-29 | Length-adjustable vertebral plate |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105266877A (en) * | 2015-11-26 | 2016-01-27 | 广州聚生生物科技有限公司 | Spinal column vertebral plate open-door fixing system |
| CN105411662A (en) * | 2015-12-31 | 2016-03-23 | 四川大学华西医院 | Screw-free cervical posterior approach laminoplasty self-locking mini-steel plate fixing device |
| JP2017534430A (en) * | 2014-11-17 | 2017-11-24 | シージー バイオ カンパニー，リミテッド | Laminoplasty spacer |
| CN109223149A (en) * | 2018-11-13 | 2019-01-18 | 常州集硕医疗器械有限公司 | A kind of combined type vertebral plate fixing plate device |
| CN109833093A (en) * | 2018-01-25 | 2019-06-04 | 中国人民解放军第二军医大学第二附属医院 | The fixed device of navigator fix device for anterior cervical operation |
| CN113040889A (en) * | 2021-03-25 | 2021-06-29 | 西安市红会医院 | Bone fracture plate fixing system matched with bone healing process |
| CN114469462A (en) * | 2022-04-08 | 2022-05-13 | 北京大学第三医院（北京大学第三临床医学院） | Self-stabilizing atlantoaxial fusion cage |
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