CN109124749A - A kind of extremely simple type On Fluctuations pedicle nail of undercut mark - Google Patents
A kind of extremely simple type On Fluctuations pedicle nail of undercut mark Download PDFInfo
- Publication number
- CN109124749A CN109124749A CN201810874150.3A CN201810874150A CN109124749A CN 109124749 A CN109124749 A CN 109124749A CN 201810874150 A CN201810874150 A CN 201810874150A CN 109124749 A CN109124749 A CN 109124749A
- Authority
- CN
- China
- Prior art keywords
- spring
- nail
- button
- pedicle nail
- fluctuations
- 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
- 238000012545 processing Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 4
- 230000006872 improvement Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 2
- 238000002513 implantation Methods 0.000 claims 1
- 238000001356 surgical procedure Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 11
- 238000011176 pooling Methods 0.000 description 5
- 230000004927 fusion Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 241000587161 Gomphocarpus Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 208000003618 Intervertebral Disc Displacement Diseases 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 206010025005 lumbar spinal stenosis Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 208000005198 spinal stenosis Diseases 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
- A61B17/7005—Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit in the screw or hook heads
-
- 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
Landscapes
- 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 patent application book discloses a kind of pedicle nail with On Fluctuations function applied in Orthopeadic Surgery and neurosurgical operation instrument, this structure by traditional pedicle nail, depth is carried out to simplify, eliminate upper and lower briquetting, plug screw is only continued to use, simultaneously to nail seat, button and spring reduce the processing of incisura, while having reached the clinical function for retaining former On Fluctuations pedicle nail, component is simplified, cost has been saved and in clinical application, the special efficacy for reducing the incisura of entire pedicle nail, and having buffer function, and capable of automatically reseting.
Description
Technical field
It is just gradually coming into vogue in Orthopeadic Surgery and neurosurgery the present application relates to one kind, according to " holding
Opposite On Fluctuations movement can promote adjacent lesion centrum self-healing or merge again " clinical rationale and apply, thus by
The referred to as medical instrument of " On Fluctuations pedicle nail ".
Background technique
In modern bone surgery and neurosurgery, to the surgical of lumber ertebral disc protrusion and lumbar spinal stenosis
Treatment, experienced " rigidly fixing fusion " and arrives " on-fixed fusion ", then arrive the developing stage of " the fixed fusion of On Fluctuations "；Currently,
Gradually starting by clinic approval, researching and developing and be applied to clinical pedicle nail according to " On Fluctuations promote fusion " theory,
Then it is referred to as " On Fluctuations nail ", such as Patent No.: CN202136405U, it is entitled " Tiny increment dt supports vertebral arch nail ", just there is this
The On Fluctuations of sample are followed closely.
As continuous explore clinically is followed closely On Fluctuations, is put forward new requirements, i.e., with feedback in use, people
Structure is simple, to reduce cost of manufacture；Incisura will reduce as far as possible, academicly so-called " incisura ", can be simply considered that just
It is the height of nail seat, incisura is excessively high, the effect of operation can be seriously affected, for this purpose, having design to sacrifice " swing " of On Fluctuations nail
And " buffering " function is cost, it is intended to cancel upper and lower briquetting and spring, this make again On Fluctuations follow closely lose it is exclusive " soft
Property constraint " effect, influence On Fluctuations nail performance performance.
Summary of the invention
In view of the foregoing it is apparent that: " structure wants letter, and incisura wants low " is conflict with " pooling feature, flexible constraint ".
For solve academia to On Fluctuations follow closely clinically as the technical requirements faced a difficult choice, the present patent application provides a kind of simple
Feasible technical solution exactly improves the pedicle nail of currently a popular On Fluctuations type, it may be assumed that remain original spiral shell
Plug eliminates original upper and lower briquetting, and to nail seat, button and spring, these three former components reduce at the structure of incisura
Reason while thus greatly reducing incisura, remains the superiority of " pooling feature, flexible constraint " specific to On Fluctuations nail
Energy.
The present patent application solves the technical solution of its technical problem use further include:
Further, reduce to former component button the processing of incisura, it may be assumed that by the head of the button, add
Work goes out mistake its centre of sphere, and the plane of the axis perpendicular to its tail portion remains one and be convenient in the center of this plane
Cooperate the blind hole of driver effect, and use this plane, directly the bearing spring.
Still further, reduce to the spring of former component the processing of incisura, it may be assumed that by the spring, be retrofit into dish
Shape spring, the bottom surface of the disk spring are placed directly in the plane on the head of the button；The disk spring
Center, the hole passed through equipped with Convenient revolver；The top surface of the disk spring should be arranged to assemble in entire pedicle nail and complete
Afterwards under natural conditions, it is slightly higher go out the nail seat U-shaped through slot bottom surface.
Still further, reduce to the nail seat of former component the processing of incisura, it may be assumed that will be perpendicular to the axis of the nail seat
The under shed direction of U-shaped opening slot toward the nail seat move down, convenient for directly supporting the pitman for belonging to outer accessory, and described
Nail seat the inner wall perpendicular to the inner cavity of its axis on, process one group of protrusion limit obstacle, effect is to prevent from being assemblied in
The spring abjection of the nail seat inner cavity.
Still further, the bottom of the inner cavity on head and the nail seat to the button is formed by kinematic pair
Corresponding two surfaces, the process of surface treatment such as hardened, be quenched, wear-resistant friction layer being formed, thus will be due to relative motion
The abrasion of generation is reduced to acceptable degree.
Yet further, it is contemplated that save money, simplify the factors such as production, also it is practicable continue to use it is traditional in compression-type
Column spring, but to make to reduce the technical treatment of its height to the column type spring.
In conclusion the present patent application changes just by above-mentioned several technical measures in the research and development of not overspending and tooling
Into under the premise of expense, just reached both greatly reduced On Fluctuations nail incisura this most by clinical application when the problem of denouncing
While, also remain the technical effect of " pooling feature, flexible constraint " superior function of traditional On Fluctuations nail.
The present patent application is described further below in conjunction with the drawings and specific embodiments.
Detailed description of the invention
Here is the explanation of each attached drawing and specific features:
Attached drawing 1 is the broken section effect picture of the present patent application embodiment one.
Attached drawing 2 is the X-Y scheme of the present patent application embodiment one.
Attached drawing 3 is the effect picture of the present patent application embodiment one and the explosive view of partial enlargement.
Attached drawing 4 is the comparison diagram of the present patent application embodiment one and traditional On Fluctuations nail.
Attached drawing 5 is in the present patent application embodiment one, and disk spring plays the schematic diagram of buffering and flexible constraint.
Attached drawing 6 is the partial result figure of the present patent application embodiment two.
Attached drawing 7 is several pattern scheme schematic diagrames of spring selected by the present patent application.
Wherein:
Plug screw 1；Spring 2；Nail seat 3；Button 4；Outer accessory-pitman (5)；Upper and lower briquetting 6,7；
Spring top surface 21；Spring bottom surface 22；Spring interstitial hole 23；
Nail seat U-lag bottom surface 31；Nail seat inner cavity protrusion limit obstacle 32；Nail seat fabrication hole 33；Nail seat intracavity bottom 34；
Button tail portion 41；Bulb nail head 42；Button header planes 43；The blind hole 44 of button plane；
The incisura H of traditional On Fluctuations nail；The incisura h that the present patent application is reduced；
Under natural conditions, spring is higher by the distance X of nail seat U-lag bottom surface；
Specific embodiment
For the novelty and improvement for indicating the present patent application, please referring initially to traditional fine motion in attached left side shown in Fig. 4
The X-Y scheme of state nail and the present patent application on right side, should be clear from from this comparison: the present patent application has continued to use traditional plug screw
1；Eliminate the upper and lower briquetting 6,7 of traditional On Fluctuations nail；Undercut mark is carried out to spring 2, nail seat 3 and button 4 to change
Into so that about 18~19mm that incisura height H is followed closely from traditional On Fluctuations, is directly reduced to about 13.5 shown in the present patent application
~14mm, the incisura height h reduced reach 4mm or more, this has just reached splendid technical effect clinically.
Why the technical solution of the present patent application institute publicity has advanced and novelty, is mainly to use
In addition comprehensive technical measures, reasonably solve " structure wants letter, incisura to want low " and " pooling feature, flexible constraint " this to tool
There is certain contradictory double-barreled question；From the partial sectional view of attached the present patent application embodiment one shown in FIG. 1, in conjunction with attached drawing 2
X-Y scheme, it can clearly be seen that the present patent application has carried out reduction incisura to the spring 2, nail seat 3 and button 4
Improvement: on the head 42 of the button 4, former higher top plan was reduced to the plane 43 of the centre of sphere；Described
Spring 2 reelects and is selected to the less disk spring of occupied space；Due to the two changes, the space in comparable height is saved,
So that a possibility that bottom surface 31 of the U-lag in the nail seat 3 moves down, in plug screw 1 and outer accessory ----pitman
(5) in the case where size constancy, the height of entire nail seat 3 can be reduced, and here it is technical measures energy shown in the present patent application
Enough reach the principle for reducing the technical effect of incisura.
From the effect picture (left side) of attached the present patent application embodiment one shown in Fig. 3 and the explosive view (right side) of partial enlargement
Be clearly visible: spring 2 described in the present patent application, in the present embodiment one, selection is disk spring, spring bottom surface
22, it is directly supported in the button header planes 43；And the spring top surface 21, in the dress of entire On Fluctuations nail
Distance with the bottom surface 31 that under natural conditions, should be higher by the nail seat U-lag after the completion is X, (please refers to attached drawing 2 herein
Left side shown in)；It is repeatedly tested in the present patent application embodiment one through applicant, when selecting X=0.3mm, more rationally；
(please referring to shown in 4 right side of attached drawing).
Attached drawing 2 is reviewed again, and referring initially to left hand view, applicant wants to disclose herein, when pitman (5) (is used when not being placed in
Dotted line indicates), the top surface 21 of the spring 2 is above the nail seat U-lag bottom surface 31 in its natural state；Just because of
There is such distance X, when outer accessory --- and-pitman (5) is placed into nail seat 3 described in (indicated by the solid line), and screws institute
When the plug screw 1 stated, (as shown in 2 right side of attached drawing), pitman (5) will directly be supported in the nail seat U-lag bottom surface 31
On, while the spring top surface 21 can be also oppressed, to make the spring 2 generate initial deformation, so that described
Bulb nail head 42 be close to the nail seat intracavity bottom 34, form a pair of of kinematic pair each other, the button 4 can be with
Here it is the basic principles that On Fluctuations are followed closely around the swing --- -- of its sphere mass center for work in the nail seat 3.
Since after entire On Fluctuations follow closely the centrum for being implanted into patient, the button 4 will be linked to be with the centrum of patient
One rigid body, and when the centrum of patient is acted on by the external shock power Fy for the axis for being parallel to the button 4, it is described
Button header planes 43, will lead to the spring 2 and generate compressive deformation, it is exactly such to become as shown in 5 left side of attached drawing
Shape produces buffer area, once and external shock power Fy weaken or disappear, be stored in the potential energy release of the spring 2, push
Button is returned to original normal condition, exactly such buffer function, the applicant during the test, it was demonstrated that can be effective
Ground is reduced in pedicle nail implant surgery, most easily leads to " it is disconnected to follow closely loose stick " phenomenon of operative failure.
Similarly, when the button 4, together with the centrum for the patient being implanted into, in the external force perpendicular to button axis
Under the action of Fx, make wobbling action, as shown in the right side of attached drawing 5, the spring 2 can also make deformation, and this deformation can be with
The angle of swing is gradually big and gradually big, and when external force Fx weakens or disappears, the potential energy for being stored in the spring 2 can also discharge, and cause
It swings the button 4 and is returned to home position, this function of being referred to as " automatically reseting " by academia can generate
The phenomenon of " axial support force " is just causing the deep discussion of academia.
No matter the centrum of patient, by active force where at arrival, be decomposed into it is above-mentioned shown in Fx and Fy, so,
This " pooling feature " and " reset function ", generated technical effect are very significant.
As long as from above-mentioned analysis it is found that choosing the thickness physics ginseng of such as elasticity modulus, material of the spring 2
Number, so that it may according to such principle, make the On Fluctuations pedicle nail for meeting the different technologies index of clinical needs.
Add on the inner wall of nail seat 3 after the spring 2 is fitted into entire On Fluctuations nail, then through nail seat fabrication hole 33
The limit obstacle 32 that work goes out, it is therefore an objective to prevent the spring 2 from deviating from；In a particular embodiment, screw hole also can be used instead of work
Skill hole 33, then make limit obstacle with the small-sized screw stretched out；The limit measure of pin can also be added with through-hole.
In view of the bottom of the inner cavity on the head and nail seat of the button is formed by kinematic pair, deposit after all
In relative motion, be also inevitably generated abrasion, so, to the surface that the two are in contact with each other, carry out it is wear-resistant, it is such as hard
Abrasion, can be reduced to acceptable degree by the processing such as change, quenched, heterogeneousization.
Above-described embodiment is the present patent application preferred embodiment, other its all principles and basic structure and the present embodiment phase
It is same or approximate, within the present patent application protection scope.
Claims (9)
1. a kind of improvement of the pedicle nail to currently a popular On Fluctuations type retains former plug screw, eliminates upper and lower briquetting,
To nail seat, button and spring, these three former components reduce the pattern handling of incisura, it is characterised in that: the spring
Bottom surface is placed directly in the header planes of the button；The top surface of spring, entire pedicle nail after the assembly is completed from
Under right state, it is higher by the bottom of the U-shaped through slot of the nail seat.
2. pedicle nail according to claim 1, it is characterised in that: the tail portion of the button is equipped with convenient for implantation
The Intrapyramidal external screw thread of people, the head of the button is a hemisphere, and top is the excessively described hemisphere constitution
The plane of the heart, for accepting the spring.
3. pedicle nail according to claim 2, it is characterised in that: the plane on the head of the button, perpendicular to
The axial line of tail portion, and in the plane central, the blind hole being used cooperatively equipped with one for driver.
4. pedicle nail according to claim 1, it is characterised in that: the spring, selection be shape in it is intermediate slightly
The disk spring of protrusion, and in the centre of disk spring, the hole passed through for driver should be provided with.
5. pedicle nail according to claim 1, it is characterised in that: the nail seat, in hollow cylindric, upper opening
Equipped with the internal screw thread matched with the plug screw, the bottom of inner cavity, there is the hemispherical ball convenient for the head of the button
The interior hemisphere face that face matches in this on hemisphere face, is equipped under shed.
6. pedicle nail according to claim 5, it is characterised in that: the nail seat is mutually hung down equipped with one with its axis
Straight U-shaped opening slot, for directly supporting the pitman for belonging to outer accessory.
7. pedicle nail according to claim 5, it is characterised in that: in the inner cavity perpendicular to the nail seat axis, have
One group of protrusion limits obstacle, the spring abjection for preventing from being assemblied in the nail seat inner cavity.
8. according to pedicle nail described in claim 2 and 5, it is characterised in that: on the head of the button and described
The bottom of the inner cavity of nail seat is formed by the kinematic pair of opposite swing, makees wear-resistant etc. process of surface treatment.
9. pedicle nail according to claim 1, it is characterised in that: the spring, in the column spring of compression-type, and
What column spring setting was made to be conducive in two end faces polishes processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810874150.3A CN109124749A (en) | 2018-07-31 | 2018-07-31 | A kind of extremely simple type On Fluctuations pedicle nail of undercut mark |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810874150.3A CN109124749A (en) | 2018-07-31 | 2018-07-31 | A kind of extremely simple type On Fluctuations pedicle nail of undercut mark |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109124749A true CN109124749A (en) | 2019-01-04 |
Family
ID=64798827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810874150.3A Pending CN109124749A (en) | 2018-07-31 | 2018-07-31 | A kind of extremely simple type On Fluctuations pedicle nail of undercut mark |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109124749A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111419369A (en) * | 2020-04-03 | 2020-07-17 | 董谢平 | Hinged pedicle screw with neutral bracing pressure and static-to-dynamic self-rotation-converted fixed state |
| WO2021031121A1 (en) * | 2019-08-20 | 2021-02-25 | 董谢平 | Split dynamic and static dual-purpose pedicle screw and mounting tool thereof |
| CN115666424A (en) * | 2020-04-17 | 2023-01-31 | 艾斯丘莱普股份公司 | Surgical fixation system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1130346A (en) * | 1994-07-18 | 1996-09-04 | 卢茨·比德曼 | Anchors and their adjustment tools |
| US20130131734A1 (en) * | 2011-11-23 | 2013-05-23 | Veros Mcm, Llc | Pedicle screw assembly |
| CN108888328A (en) * | 2018-09-18 | 2018-11-27 | 何伟义 | A kind of minimally invasive On Fluctuations pedicle nail |
-
2018
- 2018-07-31 CN CN201810874150.3A patent/CN109124749A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1130346A (en) * | 1994-07-18 | 1996-09-04 | 卢茨·比德曼 | Anchors and their adjustment tools |
| US20130131734A1 (en) * | 2011-11-23 | 2013-05-23 | Veros Mcm, Llc | Pedicle screw assembly |
| CN108888328A (en) * | 2018-09-18 | 2018-11-27 | 何伟义 | A kind of minimally invasive On Fluctuations pedicle nail |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021031121A1 (en) * | 2019-08-20 | 2021-02-25 | 董谢平 | Split dynamic and static dual-purpose pedicle screw and mounting tool thereof |
| US11103285B2 (en) | 2019-08-20 | 2021-08-31 | Dong Xieping | Pedicle screw assembly for dynamic and static fixation and installation tool therefor |
| JP2021529002A (en) * | 2019-08-20 | 2021-10-28 | 董謝平 | Split dynamic and static pedicle screw and its mounting tool |
| JP7011076B2 (en) | 2019-08-20 | 2022-01-26 | 董謝平 | Split dynamic / static amphoteric pedicle screw and its mounting tool |
| CN111902098B (en) * | 2019-08-20 | 2023-09-01 | 董谢平 | Split dynamic and static two-purpose pedicle screw and mounting tool thereof |
| CN111419369A (en) * | 2020-04-03 | 2020-07-17 | 董谢平 | Hinged pedicle screw with neutral bracing pressure and static-to-dynamic self-rotation-converted fixed state |
| CN111419369B (en) * | 2020-04-03 | 2024-04-12 | 董谢平 | Articulated pedicle screw with neutral support and compression and self-conversion from static to dynamic fixed state |
| CN115666424A (en) * | 2020-04-17 | 2023-01-31 | 艾斯丘莱普股份公司 | Surgical fixation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109124749A (en) | A kind of extremely simple type On Fluctuations pedicle nail of undercut mark | |
| CN102462562B (en) | Intervertebral cage having flexibility | |
| CN106726022B (en) | An artificial intervertebral disc without interfacial friction and its forming method | |
| JP2008526459A (en) | Elastomeric disc prosthesis | |
| JP2008511423A (en) | Stent and stent manufacturing method | |
| JP2008518643A (en) | Stent and stent manufacturing method | |
| CN106901876A (en) | A kind of biomimetic type artificial intervertebral disk and its forming method | |
| CN109745110A (en) | A flexible pedicle screw | |
| CN109106478B (en) | Durable artificial intervertebral disc prosthesis | |
| US20050080487A1 (en) | Intervertebral implant | |
| CN110755182A (en) | A kind of atlantoaxial lateral mass joint fusion device | |
| CN109745109A (en) | A kind of pedicle nail with axial buffer and On Fluctuations function | |
| CN211560551U (en) | Atlantoaxial lateral mass joint fusion cage | |
| CN202875538U (en) | Combined artificial vertebral body | |
| TW201238555A (en) | Medical instrument with three dimensional fixation shape memory intramedullary nail | |
| CN208769960U (en) | A kind of pedicle nail with axial buffer and On Fluctuations function | |
| CN101677864B (en) | Artificial intervertebral disc | |
| CN208910454U (en) | A kind of undercut mark On Fluctuations pedicle nail with pooling feature | |
| CN210384014U (en) | Low-incisura to simple micro-dynamic pedicle screw | |
| TWM491456U (en) | Artificial intervertebral disk | |
| EP3846708B1 (en) | Granule made of biocompatible metallic material for vertebroplasty | |
| TWI653973B (en) | Vertebral simulation of spinal implants | |
| CN101828978B (en) | Displacement reed and artificial intervertebral disc with the displacement reed | |
| CN210472250U (en) | Pedicle screw with spring neck | |
| CN209611267U (en) | A kind of pedicle nail of external spring type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |