CN209136844U - A kind of pedicle screw - Google Patents
A kind of pedicle screw Download PDFInfo
- Publication number
- CN209136844U CN209136844U CN201821251796.8U CN201821251796U CN209136844U CN 209136844 U CN209136844 U CN 209136844U CN 201821251796 U CN201821251796 U CN 201821251796U CN 209136844 U CN209136844 U CN 209136844U
- Authority
- CN
- China
- Prior art keywords
- rivet nut
- screw
- ailhead
- guide channel
- lock
- 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.)
- Expired - Fee Related
Links
- 210000000988 bone and bone Anatomy 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 2
- 230000037230 mobility Effects 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 210000000278 spinal cord Anatomy 0.000 description 2
- 206010061246 Intervertebral disc degeneration Diseases 0.000 description 1
- 208000020339 Spinal injury Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000560 biocompatible material Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- -1 cochrome Substances 0.000 description 1
- 210000002808 connective tissue Anatomy 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 210000001032 spinal nerve Anatomy 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 230000014616 translation Effects 0.000 description 1
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model relates to a kind of pedicle screws, rivet nut, ailhead, the first lock-screw, the second lock-screw and pilot pin, rivet nut and ailhead are structure as a whole, the first external screw thread is equipped with outside rivet nut, ailhead free end is equipped with U-type groove, U-type groove open end is equipped with the first internal thread interface, and the first internal thread interface is used to install the first lock-screw of locking pitman；The inside of rivet nut is successively arranged the hollow cavity and guide channel being connected to U-type groove from ailhead to rivet nut direction, hollow cavity includes the first section and the second section set gradually from ailhead to rivet nut direction, first section is the interior hexagonal interface for tightening or unscrewing pedicle screw, second section is the second internal thread interface for installing the second lock-screw, and one end connection hollow cavity of guide channel and the other end run through the outer wall of rivet nut；After rivet nut is installed in place, pilot pin penetrates guide channel out of hollow cavity and is at least partly pierced by the outer wall of rivet nut under the guiding of guide channel.
Description
Technical field
The utility model relates to medical instruments field more particularly to a kind of pedicle screws.
Background technique
Backbone is the complication system of bone and connective tissue, provides support for human body and protects spinal cord and nerve.Adult ridge
Column is made of upper and lower part.Top includes 24 discontinuous bones, is divided into three regions, including 7 cervical vertebras, 12 thoracic vertebraes
With 5 lumbar vertebraes.Lower part is made of rumpbone and coccyx.Referred to as the size of the cylindrical bony of centrum gradually increases downwards from top
To lower part.
Interverbebral disc, which is buffered and buffered together with Minor articulus after two, is applied to epispinal various translations and rotary force.Intervertebral
Disk is the spacer between two centrums.Facet provides stability for the rear portion of adjacent vertebrae.Spinal cord is contained in centrum
Pipeline in.It is protected backward by vertebral plate.Thin layer is that there are three the curved surfaces of main protrusion for tool.Two transverse process are from vertebral plate
It is laterally extended, and spinous process caudal ward and rear side extend.Centrum and vertebral plate are connect by the bone bridging of referred to as pedicle of vertebral arch.
Spinal fixation system is widely used in correction spinal injury and the surgical procedures of disease.When disc degeneration arrives
When the position for needing to remove, there are many implantation materials between centrum for replacing interverbebral disc.These include PEEK centrum spacer, gold
Belong to cage and corpse and human body bone implant.For the ease of stablizing backbone and being held in place centrum, generally use other
Implantation material, including the longitudinally connected bar being fixed in connecting element, connecting element is further through vertebrae fixation fastener such as vertebral arch
Root screw, hook etc. are fixed on bone.Pedicle screw is surgical instruments/implantation material for stablizing backbone.In spine hand
In art, pedicle screw is usually used in stable operation, such as relocating sliding vertebra or for reinforcing vertebra.These spiral shells
The usually possessed tapping screw thread of nail helps to insert screws into the process in the pedicle of vertebral arch of two or more vertebras.Vertebra
Pedicle screw can be made of any biocompatible material, including cochrome, stainless steel, titanium alloy and PEEK.
The Chinese patent literature of Publication No. CN102949229A disclose a kind of unidirectional automatic distraction pedicle screw and
It is applied, and is made of the head of a nail, packing washer and rivet nut, and rivet nut passes through the head of a nail, and is limited and fixed by packing washer；Rivet nut is worn
Cross the round runway through-hole of head of a nail end, the spherical mortar cup I cooperation of bulb mortar body and the head of a nail；Packing washer is caught in again, is padded
The spherical mortar cup II of circle and the spherical mortar body of rivet nut cooperate, and two edges protrusion is stuck in the groove of the head of a nail；Rivet nut ailhead and nail body
The special cylinder design of interconnecting piece and head of a nail end circle runway hole and unilateral horn mouth cooperate, and realize monoplane movement；Unidirectionally
Automatic application of the distraction pedicle screw in backbone correcting and technique for fixing field.The advantages of invention: monoplane fortune is realized
It is dynamic；Mobility between rivet nut and nut is determined by bell-mouthed openings of sizes, designs the monoplane screw that different mobilities require；
It can be suitable for different occasions there are many specification, the rivet nut equipped with different-diameter and length according to the difference of rivet nut thread size.
But the patient of spine fracture and spondylolishesis is more and more at present, in some patients by operative treatment, because of its bone
Matter is loose, is not fixed firmly after traditional pedicle screw placement, pedicle screw loosening is easy to appear in reseting procedure, is led
Cause fixation failure, operative failure.
Utility model content
For the deficiencies of the prior art, the utility model provides a kind of pedicle screw, and the pedicle screw includes
Rivet nut, ailhead, the first lock-screw, the second lock-screw and pilot pin, the rivet nut and the ailhead are structure as a whole, in institute
It states and is equipped with the first external screw thread outside rivet nut, the ailhead free end is equipped with the U-type groove for installing pitman, and the U-type groove is opened
Mouth end is equipped with the first internal thread interface, and first internal thread interface is used to install the first lock-screw of locking pitman；Institute
The hollow cavity being connected to the U-type groove is successively arranged from the ailhead to the rivet nut direction for the inside for stating rivet nut and guiding is logical
Road, the hollow cavity includes the first section and the second section set gradually from the ailhead to the rivet nut direction, described
First section is the interior hexagonal interface for tightening or unscrewing the pedicle screw, and second section is described for installing
One end of second internal thread interface of the second lock-screw, the guide channel is connected to the hollow cavity and the other end runs through institute
State the outer wall of rivet nut；After the rivet nut is installed in place, the pilot pin penetrates the guide channel out of described hollow cavity
And the outer wall of the rivet nut is at least partly pierced by under the guiding of the guide channel.
According to a preferred embodiment, the guide channel includes setting gradually from the ailhead to the rivet nut direction
Positioning region and guide part, the first diameter of the positioning region be greater than the second diameter of the guide part；The pilot pin includes
Syringe needle and needle body, the third diameter of the syringe needle are greater than the 4th diameter of the needle body, and the third diameter is straight with described first
Diameter adaptation, the 4th diameter are adapted to the second diameter；Wherein, when the pilot pin is installed in place, the syringe needle is supported
Lean against the intersection of the positioning region Yu the guide part.
According to a preferred embodiment, after the pilot pin is installed in place, the close ailhead of the syringe needle
One end is at least partly stretched out except the guide channel, and second lock-screw is resisted against the ailhead when being installed in place
On one end.
According to a preferred embodiment, the guide channel is circular hole, between the pilot pin and the guide channel
For clearance fit.
According to a preferred embodiment, the free end end face of the syringe needle is equipped with to be connect for extracting the needle that pulls out of pilot pin
Mouthful, the needle interface that pulls out is pull ring and/or bracing wire.
According to a preferred embodiment, the rivet nut includes at least the first fastening section being connected to each other and the second fastening
Section, first fastening section are equipped with first external screw thread, and second fastening section is equipped with the second external screw thread, first fastening
Section is connect with the ailhead, wherein the 5th diameter of first fastening section is greater than the 6th diameter of second fastening section.
According to a preferred embodiment, the free end of second fastening section is tapered and its tip is hemispherical.
According to a preferred embodiment, the guide channel is set to described first through the position of the outer wall of the rivet nut
At the interconnecting piece of fastening section and second fastening section, which is equipped with chamfering, and the guide channel is corresponding from the chamfering
Inclined-plane on be pierced by the outer wall of the rivet nut.
According to a preferred embodiment, first externally threaded first screw pitch and second externally threaded second spiral shell
Away from identical.
According to a preferred embodiment, first lock-screw and/or second lock-screw use interior hexagonal
Interface.
The utility model provides a kind of pedicle screw and at least has the advantage that
(1) the utility model can prevent pedicle screw from loosening by the pilot pin stretched out from the side wall of rivet nut, reduce
There is a possibility that fixation failure, operative failure situation；
(2) pilot pin is compressed by the second lock-screw, the case where pilot pin loosens can be avoided the occurrence of, so that locking effect
Fruit is more preferable；
(3) the utility model is equipped with different the first fastening sections and the second fastening section of diameter, and the diameter of the second fastening section is more
Small, realization is goed deep into smaller to the destruction of vertebra while tightening.
Detailed description of the invention
Fig. 1 is the axonometric schematic diagram of a preferred embodiment of pedicle screw；
Fig. 2 is the simplified cross-sectional view of a preferred embodiment of pedicle screw；
Fig. 3 is the simplification partial sectional view of a preferred embodiment of pedicle screw；
Fig. 4 is simplified cross-sectional view of the preferred embodiment of pedicle screw in the state of not installing pilot pin；
Fig. 5 is axonometric schematic diagram of the preferred embodiment of pedicle screw from above ailhead；
Fig. 6 is the structural schematic diagram of a preferred embodiment of pilot pin；
Fig. 7 is the dismantling schematic diagram of a preferred embodiment of pedicle screw；With
Fig. 8 is axonometric schematic diagram of the preferred embodiment of pedicle screw in the case where installing pitman state.
Reference signs list
100: rivet nut the 100B: the second fastening section of the 100A: the first fastening section
100AW: the first the 100BW: the second external screw thread of external screw thread 110: hollow cavity
111: the first section, 112: the second section 120: guide channel
121: positioning region 122: guide part 200: ailhead
220: the first internal thread interface of 210:U type groove, 310: the first lock-screw
320: the second lock-screws 400: pilot pin 410: syringe needle
420: needle body 430: pulling out needle interface A: hemispherical
B: interconnecting piece C: pitman
Specific embodiment
It is described in detail with reference to the accompanying drawing.
In the description of the present invention, it should be understood that if there is term " center ", " longitudinal direction ", " transverse direction ", " length
Degree ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner",
The orientation or positional relationship of the instructions such as "outside", " clockwise ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, only
It is the utility model and simplified description for ease of description, rather than the device or element of indication or suggestion meaning must have spy
Fixed orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In the description of the present invention, it is also to be appreciated that only being used if there are the terms such as " first ", " second "
In description purpose, it is not understood to indicate or imply relative importance or implicitly indicates the number of indicated technical characteristic
Amount." first " is defined as a result, the feature of " second " can explicitly or implicitly include one or more of the features.
If occurring term " multiple " in the description of the present invention, it is meant that two or more, unless otherwise clearly specific
Restriction.
In the description of the present invention, it is also to be appreciated that if occur " installation ", " connected ", " connection ", " Gu
Calmly ", the terms such as " affixed " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on can understanding as the case may be
The concrete meaning of term in the present invention is stated, unless otherwise specific regulation and/or is limited.
In the description of the present invention, it is also to be appreciated that unless otherwise clearly defined and limited, fisrt feature
Second feature "upper" or "lower" may include that the first and second features directly contact, also may include first and second spy
Sign is not direct contact but by the other characterisation contact between them.Moreover, fisrt feature second feature " on ",
" top " and " above " includes fisrt feature right above second feature and oblique upper, or is merely representative of first feature horizontal height
Higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " include fisrt feature second feature just
Lower section and obliquely downward, or first feature horizontal height is merely representative of less than second feature.
According to a preferred embodiment, a kind of pedicle screw, pedicle screw may include rivet nut 100, ailhead
200, at least one of the first lock-screw 310, the second lock-screw 320 and pilot pin 400.Rivet nut 100 and ailhead 200 can
To be integral structure.The first external screw thread 100AW can be equipped with outside rivet nut 100.200 free end of ailhead can be equipped with for pacifying
Load is taken over the baton the U-type groove 210 of C.210 open end of U-type groove can be equipped with the first internal thread interface 220.First internal thread interface 220
It can be used for installing the first lock-screw 310 of locking pitman C.First internal thread interface 220 is for installing the first locking screw
Nail 310.First lock-screw 310 is for locking pitman C.It the inside of rivet nut 100 can be with from ailhead 200 to 100 direction of rivet nut
It is successively arranged the hollow cavity 110 and guide channel 120 being connected to U-type groove 210.Hollow cavity 110 may include from ailhead 200
The first section 111 and the second section 112 set gradually to 100 direction of rivet nut.First section 111 can be for tightening or twisting
The interior hexagonal interface of loose pedicle screw.Second section 112 can be the second internal screw thread for installing the second lock-screw 320
Interface.One end of guide channel 120 can be connected to hollow cavity 110.The other end of guide channel 120 is through the outer of rivet nut 100
Wall.After rivet nut 100 is installed in place, pilot pin 400 can penetrate guide channel 120 out of hollow cavity 110 and lead in guiding
The outer wall of rivet nut 100 is at least partly pierced by under the guiding in road 120.Pilot pin 400 stretch out rivet nut 100 part can be inserted or
Person is resisted against on the bone tissue of surrounding, realizes locking.Preferably, a part of guide channel 120 can be curved, so that fixed
Position needle can be pierced by the outer wall of rivet nut using the design feature of pedicle screw from deeper position, so that anti-loosing effect is more preferable.This
When, it can be using resilient material as pilot pin, such as elastic rubber.When pilot pin is elastic rubber, pilot pin is stretched out
The length of rivet nut 100 can be with appropriate adjustment, as long as can be resisted against on the bone tissue of surrounding after stretching out, specific length can be with
It is determined by experiment.Alternatively, pilot pin can be using the material that can generate plastic deformation, such as steel wire or titanium alloy.Preferably,
It is straight that guide channel 120 is also possible to.At this point it is possible to be inserted into rigid pilot pin 400.
According to a preferred embodiment, guide channel 120 may include successively setting from ailhead 200 to 100 direction of rivet nut
The positioning region 121 set and guide part 122.The first diameter of positioning region 121 can be greater than the second diameter of guide part 122.Positioning
Needle 400 may include syringe needle 410 and needle body 420.The third diameter of syringe needle 410 can be greater than the 4th diameter of needle body 420.Third
Diameter can be adapted to a diameter.4th diameter can be adapted to two diameters.When pilot pin 400 is installed in place, syringe needle 410 can be
The intersection of positioning region 121 and guide part 122.
According to a preferred embodiment, after pilot pin 400 is installed in place, one end of the close ailhead 200 of syringe needle 410
At least partly exceed guide channel 120.Second lock-screw 320 can be on one end of ailhead 200, with reality when being installed in place
Now to the locking of pilot pin 400.
According to a preferred embodiment, guide channel 120 can be circular hole.Between pilot pin 400 and guide channel 120
It can be clearance fit.
According to a preferred embodiment, can be equipped in the free end end face of syringe needle 410 for extracting pilot pin 400
Pull out needle interface 430.Preferably, pulling out needle interface 430 can be pull ring and/or bracing wire.
According to a preferred embodiment, rivet nut 100 may include the first fastening section 100A and second for being connected to each other tight
Gu section 100B.The first external screw thread 100AW can be equipped on first fastening section 100A.Second can be equipped on second fastening section 100B
External screw thread 100BW.First fastening section 100A can be connect with ailhead 200.The 5th diameter of first fastening section 100A can be greater than
The 6th diameter of second fastening section 100B.
According to a preferred embodiment, the free end of the second fastening section 100B can be tapered.The point of second fastening section
End can be with hemispherical A.
According to a preferred embodiment, guide channel 120 can be tight first through the position of the outer wall of rivet nut 100
Gu at the interconnecting piece B of section 100A and the second fastening section 100B.Interconnecting piece B can be equipped with chamfering.Guide channel 120 can be from chamfering
The outer wall of rivet nut 100 is pierced by corresponding inclined-plane.
According to a preferred embodiment, the second of the first screw pitch of the first external screw thread 100AW and the second external screw thread 100BW
Screw pitch can be identical.It is some that the first screw pitch and the second screw pitch are set as different locking to realize in the prior art, but removing
When pedicle screw, screw way can be destroyed, if it is interim for removing, for example just for the sake of adjustment pitman, is then directly resulted in
The second fastening section 100B can not achieve fastening effect next time.And the utility model can use because being positioned using pilot pin
Identical screw pitch, avoids this problem.
According to a preferred embodiment, the first lock-screw 310 and/or the second lock-screw 320 can use interior six
Corner connection mouth.
It should be noted that above-mentioned specific embodiment is exemplary, those skilled in the art can be in the utility model
Various solutions are found out under the inspiration of disclosure, and these solutions also belong to the open scope of the utility model simultaneously
It falls within the protection scope of the utility model.It will be understood by those skilled in the art that the utility model specification and its attached drawing
It is illustrative and not constitutes limitations on claims.The protection scope of the utility model is by claim and its equivalent
It limits.
Claims (10)
1. a kind of pedicle screw, which is characterized in that the pedicle screw includes rivet nut (100), ailhead (200), the first lock
Tight screw (310), the second lock-screw (320) and pilot pin (400), the rivet nut (100) and the ailhead (200) are integrated
Structure is equipped with the first external screw thread (100AW) outside the rivet nut (100), and ailhead (200) free end is equipped with for installing
The U-type groove (210) of pitman (C), U-type groove (210) open end are equipped with the first internal thread interface (220), in described first
Hickey (220) is for installing the first lock-screw (310), and first lock-screw (310) is for locking pitman
(C)；
The inside of the rivet nut (100) is successively arranged and the U-type groove from the ailhead (200) to the rivet nut (100) direction
(210) hollow cavity (110) and guide channel (120) being connected to, the hollow cavity (110) includes from the ailhead (200)
The first section (111) and the second section (112) set gradually to the rivet nut (100) direction, first section (111) are
For tightening or unscrewing the interior hexagonal interface of the pedicle screw, second section (112) is for installing described second
Second internal thread interface of lock-screw (320), one end of the guide channel (120) be connected to the hollow cavity (110) and
The other end runs through the outer wall of the rivet nut (100)；
After the rivet nut (100) is installed in place, the pilot pin (400) penetrates described lead out of the hollow cavity (110)
The outer wall of the rivet nut (100) is at least partly pierced by channel (120) and under the guiding of the guide channel (120).
2. pedicle screw as described in claim 1, which is characterized in that the guide channel (120) includes from the ailhead
(200) positioning region (121) set gradually to the rivet nut (100) direction and guide part (122), the positioning region (121)
First diameter is greater than the second diameter of the guide part (122)；
The pilot pin (400) includes syringe needle (410) and needle body (420), and the third diameter of the syringe needle (410) is greater than the needle
4th diameter of body (420), the third diameter are adapted to the first diameter, and the 4th diameter and the second diameter are suitable
Match；
Wherein, when the pilot pin (400) is installed in place, the syringe needle (410) be resisted against the positioning region (121) with it is described
The intersection of guide part (122).
3. pedicle screw as claimed in claim 2, which is characterized in that described after the pilot pin (400) is installed in place
Syringe needle (410) at least partly stretches out except the guide channel (120) close to the one end of the ailhead (200), and described the
Two lock-screws (320) are resisted against on one end of the ailhead (200) when being installed in place.
4. pedicle screw as described in claim 1, which is characterized in that the guide channel (120) is circular hole, the positioning
It is clearance fit between needle (400) and the guide channel (120).
5. pedicle screw as claimed in claim 2, which is characterized in that the free end end face of the syringe needle (410) is equipped with
For extracting pulling out needle interface (430) for pilot pin (400), the needle interface (430) that pulls out is pull ring and/or bracing wire.
6. pedicle screw as described in claim 1, which is characterized in that the rivet nut (100) includes at least and is connected to each other
First fastening section (100A) and the second fastening section (100B), first fastening section (100A) are equipped with first external screw thread
(100AW), second fastening section (100B) be equipped with the second external screw thread (100BW), first fastening section (100A) with it is described
Ailhead (200) connection, wherein the 5th diameter of first fastening section (100A) is greater than the of second fastening section (100B)
Six diameters.
7. pedicle screw as claimed in claim 6, which is characterized in that the free end of second fastening section (100B) is in cone
Shape and its tip are hemispherical (A).
8. pedicle screw as claimed in claim 6, which is characterized in that the guide channel (120) runs through the rivet nut
(100) position of outer wall is set at the interconnecting piece (B) of first fastening section (100A) and second fastening section (100B),
The interconnecting piece (B) is equipped with chamfering, and the guide channel (120) is pierced by the rivet nut (100) from the corresponding inclined-plane of the chamfering
Outer wall.
9. pedicle screw as claimed in claim 6, which is characterized in that the first screw pitch of first external screw thread (100AW)
It is identical with the second screw pitch of second external screw thread (100BW).
10. pedicle screw as described in claim 1, which is characterized in that first lock-screw (310) and/or described
Second lock-screw (320) uses interior hexagonal interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821251796.8U CN209136844U (en) | 2018-08-03 | 2018-08-03 | A kind of pedicle screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821251796.8U CN209136844U (en) | 2018-08-03 | 2018-08-03 | A kind of pedicle screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209136844U true CN209136844U (en) | 2019-07-23 |
Family
ID=67265183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821251796.8U Expired - Fee Related CN209136844U (en) | 2018-08-03 | 2018-08-03 | A kind of pedicle screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209136844U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111616788A (en) * | 2020-05-23 | 2020-09-04 | 徐州长风生物科技有限公司 | Bone screw with high anti-pulling capacity |
| CN113693699A (en) * | 2021-09-16 | 2021-11-26 | 郝定均 | Be applied to osteoporosis's claw shape pedicle of vertebral arch screw |
-
2018
- 2018-08-03 CN CN201821251796.8U patent/CN209136844U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111616788A (en) * | 2020-05-23 | 2020-09-04 | 徐州长风生物科技有限公司 | Bone screw with high anti-pulling capacity |
| CN111616788B (en) * | 2020-05-23 | 2022-04-26 | 北京庆北医疗器械有限公司 | Bone screw and perforating device with high anti-pulling capacity |
| CN113693699A (en) * | 2021-09-16 | 2021-11-26 | 郝定均 | Be applied to osteoporosis's claw shape pedicle of vertebral arch screw |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2009239515B2 (en) | Posterior spinal fastener | |
| US9532822B2 (en) | Pedicle screw with reverse spiral cut and methods thereof | |
| US8419797B2 (en) | Implant for stabilizing bones or vertebrae | |
| US8353937B2 (en) | Spinal stabilization systems and methods | |
| EP2769692B1 (en) | Iliosacral polyaxial screw | |
| US20120010668A1 (en) | Expandable surgical implant | |
| WO2011053806A2 (en) | Adjustable saddle for a bone anchor | |
| KR101599607B1 (en) | Screw fixing apparatus | |
| CN209136844U (en) | A kind of pedicle screw | |
| JP2019022708A (en) | Spinal implant system and methods of use | |
| US10327819B2 (en) | Bone screw | |
| EP3226789B1 (en) | Bone implant having tether band | |
| CN211633533U (en) | Blunt-end pedicle screw for spinal surgery | |
| CN208228989U (en) | A kind of vertebral column internal fixation nail stick system | |
| KR20200064601A (en) | Spinal screw that improves the pull out force | |
| CN204931827U (en) | Anatomical form pedicle screw | |
| CN209172474U (en) | Orthopedic screw is fixed in lumbar vertebral posterior | |
| US20110106181A1 (en) | Adjustable saddle for a bone anchor | |
| CN208942334U (en) | A kind of closed bone cement pedicle screw of band guide front end | |
| RU96000U1 (en) | Intervertebral Implant | |
| CN207253369U (en) | One kind is flexibly connected pedicle screw | |
| CN209004168U (en) | Pedicle Screw Placement in Lower Cervical fixes device | |
| CN109171924A (en) | Fixed appliance in lumbar vertebral posterior | |
| US20100305615A1 (en) | Multi-level Polyaxial Screw Connection Mechanism | |
| CN104970874A (en) | Dissection type pedicle screw |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190723 |