CN106667565A - Lateral mass fixing device of pedicle screw - Google Patents
Lateral mass fixing device of pedicle screw Download PDFInfo
- Publication number
- CN106667565A CN106667565A CN201710036367.2A CN201710036367A CN106667565A CN 106667565 A CN106667565 A CN 106667565A CN 201710036367 A CN201710036367 A CN 201710036367A CN 106667565 A CN106667565 A CN 106667565A
- Authority
- CN
- China
- Prior art keywords
- arm
- nut
- jackscrew
- coupling nut
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
- A61B17/7067—Devices bearing against one or more spinous processes and also attached to another part of the spine; 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/844—Fasteners therefor or fasteners being internal fixation devices with expandable anchors or anchors having movable parts
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8665—Nuts
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8665—Nuts
- A61B2017/867—Nuts with integral locking or clamping means
- A61B2017/868—Nuts with integral locking or clamping means self-locking due to part of nut being deformed upon tightening
Abstract
The invention discloses a lateral mass fixing device of a pedicle screw. The lateral mass fixing device comprises a coupling nut, a jackscrew component, a universal arm and an arm locking fixing nail, wherein the coupling nut is used for combining a bolt base, and a vertical bar is arranged between the coupling nut and the screw base; the jackscrew component is located above the coupling nut, and the jackscrew component and the coupling nut are movably arranged; the universal arm is provided with an arm near end part, an arm far end part and a connecting part, the arm near end part is provided with long waist-shaped holes, the long waist-shaped holes are formed in a mode of surrounding the outer side of the rod part of the jackscrew and is located between the head of the jackscrew and the upper part of the nut, and the arm far end part is provided with an arm locking fixing hole; the arm locking fixing nail is matched with the arm locking fixing hole so as to make the universal arm and a cervical vertebra vertebral plate fixedly connected. The lateral mass fixing device of the pedicle screw has the advantages that through the connection between four parts of the coupling nut, the jackscrew component, the universal arm and the arm locking fixing nail and the pedicle screw of a dentata (or an inferior cervical vertebrae), the pedicle screw of the dentata (or the inferior cervical vertebrae) has a stronger withdrawal force.
Description
Technical field
The present invention relates to it is fixed in spinal surgery, more particularly to a kind of lateral mass bracing means of pedicle screw, it is applied to
Atlas and axis are performed the operation or Cervical vertebra operation.
Background technology
Cervical vertebra one has 7 sections, and atlas is called atlas, and axis is called dentata, and C7 is called vertebrae prominens.The
First, two cervical vertebras are collectively referred to as upper cervical spine, and the 3rd is collectively referred to as Cervical vertebra to C7.Posterior cervical nail rod Internal fixation technology can be in art
In resetted by apparatus and realize that atlas and axis reset, and follow closely rod and fix there is good biomechanical stability, thus outside backbone
It is widely used in section's operation.Apparatus mentioned above resets, and refers to atlas and axis partial reset after preoperative traction, but fails completely
Reset, with dentata screw and longitudinally connected rod as the strong point in art, lifting atlas screw completes to reset and fixed.At present both at home and abroad
The apparatus reset that document is referred to has lifting pincers lifting to reset, T (L) type handle sticks up group reset, the cooperation steel wire lifting of U-shaped rod resets,
The long-armed nail lifting of atlas resets etc., a variety of resetting techniques of the above, be all based on using dentata screw+vertical this complex of rod as
Support point, resets to atlas.However, this point is connected with vertical rod by axis arch root screw, foot can not be provided sometimes
Enough strong mechanical stabilities, occur dentata screw during lifting atlas and swing with vertical rod and unstable, so as to reduce device
Efficiency and success rate that tool resets.There is scholar to propose that fixed-segment is extended to into C3 stablizes to improve the mechanics for resetting and fixing
Property, but this will lose the mobility in the gap of neck 2/3.
The content of the invention
It is an object of the invention to overcome dentata screw pull-out strength deficiency when resetting in existing atlas and axis nail-stick system art
Problem；Can also be used for overcoming osteoporosis or put first cervical vertebra screw pull-out strength caused by nail failure decline problem (including dentata,
Cervical vertebra).A kind of lateral mass bracing means of new dentata (or Cervical vertebra) pedicle screw is provided.
The technical scheme is that：The lateral mass bracing means of a kind of pedicle screw, it is characterised in that include,
Coupling nut, to combine screw basement, there is vertical rod, the connection between the coupling nut and the screw basement
Nut has nut top and nut bottom；
Jackscrew part, it is in the top of the coupling nut, and the jackscrew part has jackscrew head and jackscrew bar portion,
Mutually activity is arranged the jackscrew part with the coupling nut；
Universal arm, it has the arm close end corresponding to the jackscrew part, the arm distal end corresponding to cervical vertebra plate lower edge
Portion and the arm connecting portion of the connection arm close end and the arm distal portion, have long waist shaped hole on the arm close end, described
Long waist shaped hole to be surrounded on the outside of the jackscrew bar portion in the way of arrange and in the jackscrew head and the nut top
Between, by the hole shape of the Universal arm long lumbar hole, can adjust the length that the Universal arm stretches to vertebral plate.
There is an arm lock hole in the arm distal portion；And,
Arm locking nail, it coordinates the arm lock hole, the Universal arm is fixedly connected with cervical vertebra plate.
As a kind of preferred version of the lateral mass bracing means of pedicle screw, there is nut top on the nut top
There is nut upper internal threaded in connecting hole, nut top connecting hole, there is the outer spiral shell of jackscrew bar portion in the jackscrew bar portion
Line, the jackscrew bar portion corresponds to nut top connecting hole, by the jackscrew bar portion external screw thread and the nut top
The cooperation of internal thread, to realize that mutually activity is arranged the jackscrew part with the coupling nut.
Used as a kind of preferred version of the lateral mass bracing means of pedicle screw, the arm close end is spherical design, can
Rotate with the forward direction any direction of the jackscrew part locking in the coupling nut.
Used as a kind of preferred version of the lateral mass bracing means of pedicle screw, the arm lock hole adopts conical design,
There is lock hole internal thread, the arm locking nail has locking nail head and locking nail bar portion, the lock in the arm lock hole
It is chondritic to determine nail head, using the spherical design and the conical design of the Universal arm lock hole of the locking nail head,
Can realize that the locking nail head does the rotation of any direction centered on the normal of the arm lock hole within 15 degree.
Used as a kind of preferred version of the lateral mass bracing means of pedicle screw, the arm distal portion is in slab construction, with
Preferably contact the lower edge of cervical vertebra plate.
As a kind of preferred version of the lateral mass bracing means of pedicle screw, there is nut bottom on the nut bottom
External screw thread, and there is pedestal connecting hole on the screw basement, there is pedestal internal thread, by described in the pedestal connecting hole
Mutually activity is arranged for the cooperation of pedestal internal thread and the nut lower external thread, the coupling nut and the screw basement, is led to
Cross and tighten the coupling nut, the vertical rod and the screw basement can be locked.
When being applied to atlas and axis operation：When atlas and axis screw-rod resets, the present invention has dentata screw and vertical rod
Higher " overarm arm " effect；The problem that reseting procedure maincenter vertebral screw loosens, deviates from is overcome, is overcome as " overarm arm "
Vertical rod rock in reseting procedure, unstable problem.After completing to fix, Jing biomechanical tests confirm, the present invention makes extensive region pivot
Vertebra nail-stick system has higher biomechanical stability.
When being applied to Cervical vertebra operation：Instant invention overcomes lateral mass screw (or pedicle screw) puts for the first time nail failure
Afterwards, or during osteoporosis the problem that the screw pull-out strength for causing declines；Jing biomechanical tests confirm, invention increases nail rod
The biomechanical stability of system.
Description of the drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the structural representation (omission Universal arm) of one embodiment of the invention.
Fig. 3 is the structural front view of Universal arm in one embodiment of the invention.
Fig. 4 is the structural side view of Universal arm in one embodiment of the invention.
Fig. 5 is the use schematic diagram of one embodiment of the invention.
Specific embodiment
Accompanying drawing is combined below by specific embodiment to be described in further detail the present invention.
Fig. 1 and 2 is referred to, shown in figure is the vertebral plate bracing means of dentata (or Cervical vertebra) pedicle screw.The vertebra
Plate bracing means is used for spinal surgery, is a kind of atlas and axis screw-rod reduction fixation device.
The vertebral plate bracing means is mainly made up of parts such as coupling nut 1, jackscrew part 2, Universal arm 3 and arm locking nails 5.
The coupling nut 1 is to coordinate the screw basement 4 of the dentata (or Cervical vertebra) pedicle screw.The connection
There is vertical rod between the screw basement 4 of nut 1 and the dentata (or Cervical vertebra) pedicle screw.Specifically, the coupling nut 1
With nut top 11 and the nut bottom 12 in the lower section of the nut top 11.Have on nut on the nut top 11
Portion's connecting hole.There is nut upper internal threaded in the connecting hole of the nut top.There is nut bottom on the nut bottom 12
External screw thread.
There is pedestal connecting hole on the screw basement 4 of dentata (or Cervical vertebra) pedicle screw.The pedestal connection
There is pedestal internal thread in hole.By the cooperation of the pedestal internal thread and the nut lower external thread, the coupling nut 1
Mutually activity is arranged with the screw basement 4.By tightening the coupling nut 1, can be by the vertical rod and the dentata (or lower neck
Vertebra) pedicle screw locking.
You need to add is that, the screw basement 4 of dentata (or Cervical vertebra) pedicle screw has diapire 41 and from institute
State the top surface beginning upwardly extending the first side wall 41 and second sidewall 42 of diapire 41.The first side wall 41 and the second sidewall
42 interval settings.The first side wall 41, the second sidewall 42 collectively form "U" shaped structure with the three of the diapire 41.
The first side wall 41 and the second sidewall 42 define the pedestal connecting hole jointly, and the first side wall 41 and described
There is the pedestal internal thread in second sidewall 42.In the present embodiment, the diapire 41 is circular configuration.The first side wall 41
Left side edge in the diapire 41 and the left side edge along the diapire 41 extend into arc wall body, and second side
Wall 42 is in the right side edge of the diapire 41 and the right side edge along the diapire 41 extends into arc wall body.Described first
Side wall 41 is relative in left and right with the second sidewall 42.
Top of the jackscrew part 2 in the coupling nut 1.The jackscrew part 2 has jackscrew head 21 and place
In the jackscrew bar portion 22 of the lower section of the jackscrew head 21.There is jackscrew bar portion external screw thread in the jackscrew bar portion 22.The jackscrew
Bar portion 22 corresponds to nut top connecting hole.By matching somebody with somebody for the jackscrew bar portion external screw thread and the nut upper internal threaded
Close, mutually activity is arranged the jackscrew part 2 with the coupling nut 1.
Fig. 3 and 4 is referred to again, and the Universal arm 3 has arm close end 31, arm distal portion 32 and connects the arm close end
31 with the arm connecting portion 33 of the arm distal portion 32.Top of the arm close end 31 in the arm distal portion 32 so that institute
State arm close end 31, the arm connecting portion 33 and the three of arm distal portion 32 and collectively form " Z " font or class " Z " font knot
Structure.
The arm close end 31 is spherical design, i.e. it can be seen that substantially recessed in the overall arc being recessed upwards
Plate.There is long waist shaped hole 310 on the arm close end 31.The long waist shaped hole 310 is being surrounded on the outer of the jackscrew bar portion 22
The mode of side is arranged and between the jackscrew head 21 and the nut top 11.When the coupling nut 1 and the jackscrew
Before part 2 is locked, the Universal arm 3 can do the rotary motion of any direction.Simultaneously as the length in the long waist shaped hole 310
Shape is designed, and can pass through the cooperation position for changing the long waist shaped hole 310 and the jackscrew bar portion 22, is adjusted the Universal arm 3 and is stretched
To the length of cervical vertebra plate, realize that the arm distal portion 32 can be obtained well with the cervical vertebra plate of any form size with this
Contact.And work as after the locking of the coupling nut 1 and the jackscrew part 2, the Universal arm 3 is then fixed from rotation fortune
It is dynamic.
The arm distal portion 32, it can be seen that be in substantially Integral flat-plate structure, to fit under cervical vertebra plate
Edge.There is arm lock hole 320 described in an arm lock hole 320 to adopt conical design in the arm distal portion 32.The arm locking
There is lock hole internal thread in hole 320.
The using method of the Universal arm 3 is relatively simple, first the arm close end 31 is positioned over into the coupling nut 1
On, the jackscrew part 2 being screwed into, wouldn't lock.Then, the direction and position of the Universal arm 3 are adjusted, the arm distal portion is made
32 lock hole is contacted well with cervical vertebra plate.Finally, the jackscrew part 2 is locked.
The arm locking nail 5 coordinates the arm lock hole 320, and the Universal arm 3 is fixedly connected with cervical vertebra plate.Institute
State arm locking nail 5 and there is locking nail head and locking nail bar portion, the locking nail head is spherical design, i.e. chondritic.Profit
With the spherical design and the conical design of the lock hole of the Universal arm 3 of the locking nail head, it is possible to achieve the locking ailhead
The rotation of any direction is done within 15 degree centered on the normal of the arm lock hole 320 in portion.The arm locking nail 5 can be
The specification of different length, length is optional, therefore entering for achievable any position follows closely and lock.
Fig. 5 is finally referred to, the operation principle of the vertebral plate bracing means is as follows：According to dislocation of atlas degree, institute is first adjusted
Distance between vertical rod and atlas screw is stated, the dentata (or Cervical vertebra) pedicle screw (or lateral mass screw) is locked afterwards, will be described
Universal arm 3 steadily is fixed on lamina of axis.Now, Universal arm 3, the dentata (or Cervical vertebra) pedicle screw (or lateral mass
Screw) and one stable overarm arm configuration of the vertical bar construction, when being lifted to atlas using lifting pincers, reduce
Swing and shakiness of the dentata (or Cervical vertebra) pedicle screw (or lateral mass screw) with the vertical rod, increased in art and resets
Efficiency and success rate.
When being applied to atlas and axis operation：When atlas and axis screw-rod resets, the present invention has dentata screw and vertical rod
Higher " overarm arm " effect；The problem that reseting procedure maincenter vertebral screw loosens, deviates from is overcome, is overcome as " overarm arm "
Vertical rod rock in reseting procedure, unstable problem.After completing to fix, Jing biomechanical tests confirm, the present invention makes extensive region pivot
Vertebra nail-stick system has higher biomechanical stability.When being applied to Cervical vertebra operation：Instant invention overcomes lateral mass screw (or
Pedicle screw) put follow closely after failure for the first time, or the problem that the screw pull-out strength caused during osteoporosis declines；Jing biomethanics
Test confirms, invention increases the biomechanical stability of nail-stick system.
Below embodiments of the present invention are only expressed, its description is more concrete and detailed, but can not be therefore understood
It is the restriction to patent of invention scope.It should be pointed out that for the person of ordinary skill of the art, without departing from this
On the premise of bright design, some deformations and improvement can also be made, these belong to protection scope of the present invention.Therefore, this
The protection domain of bright patent should be defined by claims.
Claims (7)
1. the lateral mass bracing means of a kind of pedicle screw, it is characterised in that include,
Coupling nut, to combine screw basement, there is vertical rod, the coupling nut between the coupling nut and the screw basement
With nut top and nut bottom；
Jackscrew part, it is in the top of the coupling nut, and the jackscrew part has jackscrew head and jackscrew bar portion, described
Mutually activity is arranged jackscrew part with the coupling nut；
Universal arm, its have the arm close end corresponding to the jackscrew part, the arm distal portion corresponding to cervical vertebra plate lower edge and
Connect the arm connecting portion of the arm close end and the arm distal portion, there is long waist shaped hole, the long waist on the arm close end
Shape hole to be surrounded on the outside of the jackscrew bar portion in the way of arrange and between the jackscrew head and the nut top, institute
State and have in arm distal portion an arm lock hole；And,
Arm locking nail, it coordinates the arm lock hole, the Universal arm is fixedly connected with cervical vertebra plate.
2. a kind of lateral mass bracing means of pedicle screw according to claim 1, it is characterised in that the nut top
It is upper to have with nut upper internal threaded in nut top connecting hole, nut top connecting hole, have in the jackscrew bar portion
There is jackscrew bar portion external screw thread, the jackscrew bar portion corresponds to nut top connecting hole, by the jackscrew bar portion external screw thread
With the cooperation of the nut upper internal threaded, arranged with realizing that the jackscrew part and the coupling nut are mutually movable.
3. a kind of lateral mass bracing means of pedicle screw according to claim 2, it is characterised in that the arm close end
For spherical design, can rotate with the forward direction any direction of the jackscrew part locking in the coupling nut.
4. a kind of vertebral plate bracing means according to claim 1, it is characterised in that by the hole of the Universal arm long lumbar hole
Shape, can adjust the length that the Universal arm stretches to vertebral plate.
5. a kind of lateral mass bracing means of pedicle screw according to claim 1, it is characterised in that the arm lock hole
Using conical design, there is lock hole internal thread in the arm lock hole, the arm locking nail has locking nail head and locking
Nail rod portion, the locking nail head is chondritic, the spherical design and Universal arm locking using the locking nail head
The conical design in hole, it is possible to achieve the locking nail head is done arbitrarily centered on the normal of the arm lock hole within 15 degree
The rotation in direction.
6. a kind of lateral mass bracing means of pedicle screw according to claim 1, it is characterised in that the arm distal portion
In slab construction, preferably to contact the lower edge of cervical vertebra plate.
7. a kind of lateral mass bracing means of pedicle screw according to claim 1, it is characterised in that the nut bottom
It is upper that there is nut lower external thread, and there is pedestal connecting hole on the screw basement, there is pedestal in the pedestal connecting hole
Internal thread, by the cooperation of the pedestal internal thread and the nut lower external thread, the coupling nut and the screw base
Mutually activity is arranged seat, by tightening the coupling nut, can be locked the vertical rod and the screw basement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710036367.2A CN106667565A (en) | 2017-01-17 | 2017-01-17 | Lateral mass fixing device of pedicle screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710036367.2A CN106667565A (en) | 2017-01-17 | 2017-01-17 | Lateral mass fixing device of pedicle screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106667565A true CN106667565A (en) | 2017-05-17 |
Family
ID=58859441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710036367.2A Pending CN106667565A (en) | 2017-01-17 | 2017-01-17 | Lateral mass fixing device of pedicle screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106667565A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110338894A (en) * | 2019-06-04 | 2019-10-18 | 迪恩医疗科技有限公司 | It can the fixed pedicle nail of double screws |
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| CN201668484U (en) * | 2010-05-13 | 2010-12-15 | 中国人民解放军第一七五医院 | Atlantoaxial nail stick fixing device |
| CN102225022A (en) * | 2011-04-29 | 2011-10-26 | 刘家勇 | Atlantoaxial posterior dynamic fixing device |
| JP2011234924A (en) * | 2010-05-11 | 2011-11-24 | Platon Japan:Kk | Instrument for atlantoaxial fixation |
| CN205586063U (en) * | 2016-03-28 | 2016-09-21 | 广州军区广州总医院 | Extensive region vertebra cantle fixing device |
| CN205964137U (en) * | 2016-06-29 | 2017-02-22 | 浙江保尔曼生物科技有限公司 | Orthopedics external fixator key locking formula fixer |
| CN206836952U (en) * | 2017-01-17 | 2018-01-05 | 倪斌 | The lateral mass bracing means of pedicle screw |
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| JP2011234924A (en) * | 2010-05-11 | 2011-11-24 | Platon Japan:Kk | Instrument for atlantoaxial fixation |
| CN201668484U (en) * | 2010-05-13 | 2010-12-15 | 中国人民解放军第一七五医院 | Atlantoaxial nail stick fixing device |
| CN102225022A (en) * | 2011-04-29 | 2011-10-26 | 刘家勇 | Atlantoaxial posterior dynamic fixing device |
| CN205586063U (en) * | 2016-03-28 | 2016-09-21 | 广州军区广州总医院 | Extensive region vertebra cantle fixing device |
| CN205964137U (en) * | 2016-06-29 | 2017-02-22 | 浙江保尔曼生物科技有限公司 | Orthopedics external fixator key locking formula fixer |
| CN206836952U (en) * | 2017-01-17 | 2018-01-05 | 倪斌 | The lateral mass bracing means of pedicle screw |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110338894A (en) * | 2019-06-04 | 2019-10-18 | 迪恩医疗科技有限公司 | It can the fixed pedicle nail of double screws |
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