CN109171924A - Fixed appliance in lumbar vertebral posterior - Google Patents
Fixed appliance in lumbar vertebral posterior Download PDFInfo
- Publication number
- CN109171924A CN109171924A CN201811007618.5A CN201811007618A CN109171924A CN 109171924 A CN109171924 A CN 109171924A CN 201811007618 A CN201811007618 A CN 201811007618A CN 109171924 A CN109171924 A CN 109171924A
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- Prior art keywords
- tail
- long
- nail seat
- side wall
- tail nail
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7041—Screws or hooks combined with longitudinal elements which do not contact vertebrae with single longitudinal rod offset laterally from single row of screws or hooks
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The present invention relates to the technical field of medical instrument, fixed appliance in specifically a kind of lumbar vertebral posterior.Including screwed uniaxial pedicle screw, uniaxial pedicle screw upper end is fixed at for installing the long-tail nail seat of longitudinally connected stick, and the short-tail nail seat for installing lateral connection stick is provided in long-tail nail seat.This simple, easy to use, screw the holding power of correcting fixer structure is high, stress is not easy to deviate from, it is particularly suitable for the operative treatment that osteoporosis merges lumbar vertebral disease, the higher holding power of screw be can use in the course of surgery by the corpus vertebrae replacement of dislocation, achieve the purpose that correction deformity.
Description
Technical field
The present invention relates to the technical field of medical instrument, fixed appliance in specifically a kind of lumbar vertebral posterior.
Background technique
Currently, spine fracture, regression, tumour, the various forms of lumbar vertebral diseases of inflammation are directed to, through frequently with pedicle screw-rod
Treatment is fixed in system；Existing lumbar vertebral posterior pedicle nail bar system is by pedicle nail and the connection being mounted on pedicle nail
Bar construction, two are screwed into pedicle nail respectively in two different centrums when use, and two pitmans are longitudinally connected in two pairs of vertebras
Between nut nail, play the role of connection and fixation.It is " fixed in lumbar vertebral posterior as disclosed in Chinese patent 2010205759082
Device " and Chinese patent 2012200237653 disclosed in " a kind of lumbar vertebral posterior dynamic fixation device ".These fix device all
Only fixed function is all parallel to the axis of screw additionally, due to the Impact direction of pedicle nail without correcting function, when
Pedicle of vertebral arch position is reduced because of the holding power of screw caused by the reasons such as osteoporosis, and screw is easy abjection by axial force, at this time waist
There are higher failure rates for the fracture or dislocation of vertebra.
To make, backbone reaches perfect reset or stable fixation, pedicle nail are thrown the later holding power of sclerotin into and played certainly
Qualitatively effect；If bone amount is preferable, screw-bone interface frictional force is larger, and holding power is stronger, and interior fixed success rate is higher；On the contrary,
If osteoporosis is heavier, the holding power of screw-bone interface is weaker, is easy to fall off after screw stress and interior fixation is caused to be easy to failure.
The size of pedicle nail holding power in bone depends on two aspects: first is that bone amount number, that is, bone density, second is that screw
The skin-friction force of length and screw.
With the arriving of China's aging, sufferers of osteoporosis face gradually increases.Sufferers of osteoporosis face need to receive spinal bone screw
The problem of internal fixation operation is: screw is difficult to meet the fixed requirement of osteoporosis spinal operation, and screw loosening rate is higher, often
Revision procedure is needed, patient suffering is big, medical expense is high.Therefore, the fixation for how increasing the pedicle screw of such patient is strong
Degree improves success rate of operation, has become the thorny problem of difficult spinal surgery doctor.
Chinese patent 2011102633876 disclose " a kind of minimally invasive bone cement spinal internal fixation system of thoracic and lumbar vertebral posterior and
Using ", which uses the hollow screw with side opening to inject bone cement to fixed point, reaches raising spiral shell after bone cement solidification
Follow closely the purpose of holding power.But there are still certain defects for the technology: 1, bone cement lacks bioactivity: after injection bone cement,
Bone cement interlayer is formed between screw and bone interface；This layer of bone cement lacks bioactivity, cannot be absorbed, may finally occur
Bone cement wear debris, causes pedicle nail to loosen；2, interior fixed taking-up is difficult: bone cement and screw are combined closely, and bone is solidified
Cement is difficult to take out.Therefore once fixed fracture, revision procedure are extremely difficult in occurring.
Summary of the invention
Fixed appliance in the lumbar vertebral posterior that the object of the present invention is to provide a kind of structures simply, the holding power of screw is high,
It can use the higher holding power of screw in the course of surgery to reset the lumbar vertebrae of dislocation, achieve the purpose that correct bone.
Used technical solution is as follows in order to solve the technical problem by the present invention:
Fixed appliance includes screwed uniaxial pedicle screw, is fixed at single shaft in lumbar vertebral posterior of the present invention
Pedicle screw upper end is used to install the long-tail nail seat of longitudinally connected stick, is provided in the long-tail nail seat and laterally connects for installing
The short-tail nail seat taken over the baton.
The long-tail nail seat includes on the right side of the long-tail left side wall and long-tail being arranged with the axisymmetrical of uniaxial pedicle screw
The medial surface of wall, the long-tail left side wall and long-tail right side wall has internal screw thread；In the upper of long-tail left side wall and long-tail right side wall
End respectively corresponds and is provided with left side wall extension and right side wall extension, the left side wall extension and right side wall extension it is interior
Side has internal screw thread, is connected on left side wall extension and at least one of lateral surface of right side wall extension for connecting
The short-tail nail seat of lateral connection stick.
The short-tail nail seat is inner sidewall band internal thread U-lag, and the axis of the U-lag is vertical with long-tail nail seat, U-shaped
The axis of internal screw thread in slot is parallel with the uniaxial axis of pedicle screw；Longitudinally connected stick is installed in the long-tail nail seat,
Long-tail nail seat jackscrew is installed on the internal screw thread of long-tail nail seat；The lateral connection stick is mounted in short-tail nail seat, short-tail nail
Short-tail nail seat jackscrew is installed on the internal screw thread of seat.
Connection sheet of the upper end of left side wall extension and right side wall extension with connection therebetween.
The end of the single shaft pedicle screw is set with mounting disc, and the short-tail nail seat is fixedly connected on the one of mounting disc
Side；The long-tail nail seat includes the long-tail left side wall and long-tail right side wall being arranged with the axisymmetrical of uniaxial pedicle screw, institute
The medial surface of long-tail left side wall and long-tail right side wall is stated with internal screw thread；The short-tail nail seat is inner sidewall band internal thread U
The axis of shape slot, the U-lag is vertical with long-tail nail seat, the axis of the axis of the internal screw thread in U-lag and uniaxial pedicle screw
In parallel；Longitudinally connected stick is installed in the long-tail nail seat, long-tail nail seat jackscrew is installed on the internal screw thread of long-tail nail seat；Institute
It states lateral connection stick to be mounted in short-tail nail seat, short-tail nail seat jackscrew is installed on the internal screw thread of short-tail nail seat.
The end of the single shaft pedicle screw is bulb, and the lower end of the long-tail nail seat has for installing the bulb
Ball-and-socket.
Due to the above structure, simple, easy to use, screw the holding power of this correcting fixer structure it is high, by
Power is not easy to deviate from, and is particularly suitable for the operative treatment that osteoporosis merges lumbar vertebral disease, can use screw in the course of surgery
The corpus vertebrae replacement of dislocation is achieved the purpose that correction deformity by higher holding power.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the invention.
Fig. 2 is the schematic perspective view of the screw with long-tail nail seat and short-tail nail seat.
Fig. 3 is the overlooking structure diagram of long-tail nail seat.
Fig. 4 is the A-A cross-sectional view of Fig. 3.
Fig. 5 is the schematic perspective view of screw of the another embodiment of the present invention with long-tail nail seat and short-tail nail seat.
Fig. 6 is the cross-sectional view of Fig. 5 embodiment.
Fig. 7 is the structural schematic diagram of screw of another embodiment with long-tail nail seat and short-tail nail seat.
Specific embodiment
Fixed appliance includes screwed uniaxial pedicle screw 1, fixed setting in lumbar vertebral posterior of the present invention
It is used to install the long-tail nail seat 2 of longitudinally connected stick in uniaxial 1 upper end of pedicle screw, is provided with and is used in the long-tail nail seat 2
The short-tail nail seat 7 of lateral connection stick 9 is installed.
As shown in Figure 1, the other end of longitudinally connected stick 8 is installed in use, installing longitudinally connected stick 8 in long-tail nail seat 2
In the long-tail nail seat of another uniaxial pedicle screw upper end, the uniaxial pedicle screw at longitudinally connected 8 both ends of stick is twisted respectively
In the centrum different into two；In addition, lateral connection stick 9 is installed in short-tail nail seat 7, the other end installation of lateral connection stick 9
In the short-tail nail seat 7 of another pedicle screw upper end, the pedicle screw at 9 both ends of lateral connection stick is screwed into the same centrum
It is interior.Detachable or frangibility connection type is used between short-tail nail seat 7 and long-tail nail seat 2, utilizes lateral connection in operation
After stick 9 resets the lumbar vertebrae of dislocation, short-tail nail seat 7 can be removed or be fractureed, remove lateral connection stick 9, retained longitudinal
Pitman and long-tail nail seat 2 play fixed effect.
As shown in Figure 1 and Figure 2, the long-tail nail seat 2 includes the long-tail being arranged with the axisymmetrical of uniaxial pedicle screw 1
The lower end of left side wall 3 and long-tail right side wall 4, long-tail left side wall 3 and long-tail right side wall 4 and the upper end of uniaxial pedicle screw 1 are solid
Surely connect u-shaped, the medial surface of the long-tail left side wall 3 and long-tail right side wall 4 has internal screw thread, can pacify on the internal screw thread
Jackscrew is filled, which compresses the longitudinally connected stick 8 being mounted between long-tail left side wall 3 and long-tail right side wall 4, plays fixed vertical
Effect to pitman 8；It is respectively corresponded in the upper end of long-tail left side wall 3 and long-tail right side wall 4 and is provided with 5 He of left side wall extension
It is connected on right side wall extension 6, left side wall extension 5 and at least one of lateral surface of right side wall extension 6 for connecting
Connect the short-tail nail seat 7 of correction connecting rod 9.Short-tail nail seat 7 is fixedly connected on the outer of left side wall extension 5 or right side wall extension 6
Side can also use integrated fixed connection structure.It either can also be in left side wall extension 5 or right side wall extension
A short-tail nail seat 7 is respectively arranged in 6 lateral surface.Left side wall extension 5 is fixedly connected on the upper end of long-tail left side wall 3, and left
The joining place of sidewall extension section 5 and long-tail left side wall 3 has the folding line or groove of frangibility, clamps left side wall with pliers and extends
It can be fractureed from the upper end of long-tail left side wall 3 and removes by section 5, can also joining place therebetween stamp a row and run through
Hole or row's pit, the appropriate mechanical strength reduced at punching, so as to when necessary can be by left side wall extension 5 from long-tail
The upper end of left side wall 3, which fractures, to be removed；Right side wall extension 6 is fixedly connected on the upper end of long-tail right side wall 4, and right side wall prolongs
The joining place of long section 6 and long-tail right side wall 4 has the folding line or groove of frangibility, and clamping right side wall extension 6 with pliers can
Removed so that it fractures from the upper end of long-tail right side wall 4, can also joining place therebetween stamp row's through hole or
One row's pit of person, the appropriate mechanical strength reduced at punching, so as to when necessary can be by right side wall extension 6 on the right side of long-tail
The upper end of wall 4, which fractures, to be removed；The medial surface of the left side wall extension 5 and right side wall extension 6 has internal screw thread, the interior spiral shell
Line is consistent with the internal screw thread of 4 medial surface of long-tail left side wall 3 and long-tail right side wall, this two groups of internal screw threads are connected to become what one group of connection continued
Internal screw thread, housing screw can the precession between left side wall extension 5 and right side wall extension 6, by be rotated up long-tail a left side
Position between side wall 3 and long-tail right side wall 4 will be mounted on the longitudinally connected stick between long-tail left side wall 3 and long-tail right side wall 4
8 compress；In addition, the connection sheet 13 in the upper end of left side wall extension 5 and right side wall extension 6 with connection therebetween,
Connection sheet 13 plays the work of gap between fixed left side wall extension 5 and right side wall extension 6, enhancing stability between the two
With avoiding changing the gap between left side wall extension 5 and right side wall extension 6 because of flexible deformation, influence the precision of product.Separately
Outside, it can be set in connection sheet 13 and be easy to dismantle left side wall extension 5 and right side by the groove or folding line of nipper plier pinch off
Before wall extension 6, first connection sheet 13 can be cut, operation easy to disassemble.
As shown in Figure 3, Figure 4, the short-tail nail seat 7 be inner sidewall band internal thread U-lag, the axis of the U-lag with
Long-tail nail seat 2 is vertical, and the axis of the internal screw thread in U-lag is parallel with the uniaxial axis of pedicle screw 1；The long-tail nail seat 2
On longitudinally connected stick 8 is installed, long-tail nail seat jackscrew 10 is installed on the internal screw thread of long-tail nail seat 2；The lateral connection stick 9
It is mounted in short-tail nail seat 7, short-tail nail seat jackscrew 11 is installed, short-tail nail seat jackscrew 11 will be horizontal on the internal screw thread of short-tail nail seat 7
It is fixed in short-tail nail seat 7 to the end of pitman 9.
As shown in Figure 5, Figure 6, as another embodiment of the invention, the end of the single shaft pedicle screw 1 is light
Bar is set with mounting disc 14 on the polished rod of the joining place of the end and long-tail nail seat 2 of uniaxial pedicle screw 1, long-tail nail seat 2
Lower end is fixedly connected with polished rod, and the short-tail nail seat 7 is fixedly connected in mounting disc 14.The side of mounting disc 14 extends outwardly,
Short-tail nail seat 7 is fixedly connected on the outer end of mounting disc 14.The structure of long-tail nail seat 2 and short-tail nail seat 7 is identical as a upper embodiment.
The upper end of long-tail nail seat 2 can have left side wall extension 5 and right side wall extension 6 in the present embodiment, can also be without left side
Wall extension 5 and right side wall extension 6.When uniaxial pedicle screw 1 is not screwed into bone, mounting disc 14 and short-tail nail seat
7 can rotate freely around the axis of uniaxial pedicle screw 1, adjust the angle of short-tail nail seat 7.The spiral shell of uniaxial pedicle screw 1
Line section is all screwed into after bone, and the lower end of long-tail nail seat 2 and the outer surface of bone squeeze mounting disc 14 from upper and lower faces respectively
The position of mounting disc 14 is fixed, to fix the angle of short-tail nail seat 7.It, can be with for the frictional force for improving mounting disc 14
Surface setting tooth in the upper and lower two sides of mounting disc 14 is convex or spine is convex, improves the stability on joint surface.In addition, such as Fig. 5, Fig. 6
It is shown, the upper surface of mounting disc 14 can also be designed as the boss of cone cell perhaps the groove 14A boss or groove 14A with
Centered on the mounting hole at 14 center of mounting disc, that is to say, that on the axis of uniaxial pedicle screw 1；With boss or groove
Using matching groove, perhaps the boss 14B groove or boss 14B are located at list for the lower end of the corresponding long-tail nail seat 2 of 14A
On the axis of axis pedicle screw 1,14 upper surface of mounting disc forms the conical surface engagement when being fitted in long-tail 2 lower end of nail seat, mentions
Frictional force between the two can also be increased while high concentricity, improve the stability of short-tail nail seat 7.
As shown in fig. 7, as a further improvement of the present invention, the end of the single shaft pedicle screw 1 is bulb 1A, institute
The lower end of long-tail nail seat 2 is stated with the ball-and-socket for installing the bulb 1A.The bulb 1A of uniaxial 1 end of pedicle screw is located at
In the ball-and-socket of the lower end of long-tail nail seat 2.Such connection structure can be with the deflection angle and pitch angle of flexible modulation long-tail nail seat 2
Degree.
Claims (6)
1. fixed appliance in lumbar vertebral posterior, including screwed uniaxial pedicle screw (1), it is fixed at uniaxial vertebral arch
Root screw (1) upper end is used to install the long-tail nail seat (2) of longitudinally connected stick, it is characterised in that: is arranged on the long-tail nail seat (2)
There is the short-tail nail seat (7) for installing lateral connection stick (9).
2. fixed appliance in lumbar vertebral posterior according to claim 1, it is characterised in that: the long-tail nail seat (2) include with
The long-tail left side wall (3) and long-tail right side wall (4) of the axisymmetrical setting of uniaxial pedicle screw (1), the long-tail left side wall
(3) and the medial surface of long-tail right side wall (4) has internal screw thread；Distinguish in the upper end of long-tail left side wall (3) and long-tail right side wall (4)
It is correspondingly arranged on left side wall extension (5) and right side wall extension (6), the left side wall extension (5) and right side wall extension
(6) medial surface has internal screw thread, on left side wall extension (5) and right side wall extension (6) at least one of lateral surface
It is connected with the short-tail nail seat (7) for connecting lateral connection stick (9).
3. fixed appliance in lumbar vertebral posterior according to claim 2, it is characterised in that: the short-tail nail seat (7) is inside
The axis of cornice internal thread U-lag, the U-lag is vertical with long-tail nail seat (2), the axis and list of the internal screw thread in U-lag
The axis of axis pedicle screw (1) is parallel；Longitudinally connected stick (8) are installed on the long-tail nail seat (2), in long-tail nail seat (2)
Internal screw thread on long-tail nail seat jackscrew (10) is installed；The lateral connection stick (9) is mounted on short-tail nail seat (7), short-tail nail
Short-tail nail seat jackscrew (11) is installed on the internal screw thread of seat (7).
4. fixed appliance in the lumbar vertebral posterior according to Claims 2 or 3, it is characterised in that: left side wall extension (5) and the right side
Connection sheet (13) of the upper end of sidewall extension section (6) with connection therebetween.
5. fixed appliance in lumbar vertebral posterior according to claim 1, it is characterised in that: the single shaft pedicle screw (1)
End be set with mounting disc (14), the short-tail nail seat (7) is fixedly connected on the side of mounting disc (14)；The long-tail nail seat
It (2) include the long-tail left side wall (3) and long-tail right side wall (4) being arranged with the axisymmetrical of uniaxial pedicle screw (1), the length
The medial surface of tail left side wall (3) and long-tail right side wall (4) has internal screw thread；The short-tail nail seat (7) is inner sidewall with interior spiral shell
The axis of the U-lag of line, the U-lag is vertical with long-tail nail seat (2), the axis of the internal screw thread in U-lag and uniaxial pedicle of vertebral arch screw
The axis for following closely (1) is parallel；Longitudinally connected stick (8) are installed on the long-tail nail seat (2), on the internal screw thread of long-tail nail seat (2)
Long-tail nail seat jackscrew (10) is installed；The lateral connection stick (9) is mounted on short-tail nail seat (7), the interior spiral shell of short-tail nail seat (7)
Short-tail nail seat jackscrew (11) is installed on line.
6. fixed appliance in lumbar vertebral posterior according to claim 5, it is characterised in that: the single shaft pedicle screw (1)
End be bulb (1A), the lower end of the long-tail nail seat (2) is with the ball-and-socket for installing the bulb (1A).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811007618.5A CN109171924A (en) | 2018-08-31 | 2018-08-31 | Fixed appliance in lumbar vertebral posterior |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811007618.5A CN109171924A (en) | 2018-08-31 | 2018-08-31 | Fixed appliance in lumbar vertebral posterior |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109171924A true CN109171924A (en) | 2019-01-11 |
Family
ID=64917110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811007618.5A Pending CN109171924A (en) | 2018-08-31 | 2018-08-31 | Fixed appliance in lumbar vertebral posterior |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109171924A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111714197A (en) * | 2020-07-24 | 2020-09-29 | 上海交通大学医学院附属第九人民医院 | Extension rod system for spine reoperation |
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| CN106806010A (en) * | 2015-12-02 | 2017-06-09 | 东北大学 | Thoracic and lumbar vertebral posterior fine motion fixed system |
| CN207168558U (en) * | 2017-02-16 | 2018-04-03 | 西南医科大学附属医院 | Master and slave type pedicle screw |
| CN108236493A (en) * | 2016-12-26 | 2018-07-03 | 贺新宁 | Scoliosis follows closely stick correction bracket system |
| CN209172474U (en) * | 2018-08-31 | 2019-07-30 | 厉锋 | Orthopedic screw is fixed in lumbar vertebral posterior |
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|---|---|---|---|---|
| CN2379105Y (en) * | 1999-08-02 | 2000-05-24 | 史亚民 | Scoliosis orthopedic internal fixator |
| US20060064090A1 (en) * | 2004-09-22 | 2006-03-23 | Kyung-Woo Park | Bio-flexible spinal fixation apparatus with shape memory alloy |
| CN101601606A (en) * | 2009-06-30 | 2009-12-16 | 郑修军 | The fixed novel vertebral pedicle bolt structure that is used for that lumbar vertebra compression fracture resets and lumbar spondylolisthesis resets |
| CN201445552U (en) * | 2009-07-14 | 2010-05-05 | 常州市康辉医疗器械有限公司 | Dynamic spine internal fixation system |
| CN201537127U (en) * | 2009-09-22 | 2010-08-04 | 郭谦 | Dissection gasket with double holes and double feet and anterior thoracolumbar screw rod system |
| BRPI0904658A2 (en) * | 2009-11-04 | 2010-11-09 | M D T Ind E Com De Implantes Ltda | polyaxial and monoaxial pedicle screw |
| CN102499746A (en) * | 2011-11-11 | 2012-06-20 | 兰州大学 | Transverse clamp for posterior arch of atlas and thoracolumbar |
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| CN203458462U (en) * | 2013-09-11 | 2014-03-05 | 北京理贝尔生物工程研究所有限公司 | Spinal pedicle screw |
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| CN108236493A (en) * | 2016-12-26 | 2018-07-03 | 贺新宁 | Scoliosis follows closely stick correction bracket system |
| CN207168558U (en) * | 2017-02-16 | 2018-04-03 | 西南医科大学附属医院 | Master and slave type pedicle screw |
| CN209172474U (en) * | 2018-08-31 | 2019-07-30 | 厉锋 | Orthopedic screw is fixed in lumbar vertebral posterior |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111714197A (en) * | 2020-07-24 | 2020-09-29 | 上海交通大学医学院附属第九人民医院 | Extension rod system for spine reoperation |
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