CN204337022U - A kind of pedicle nail - Google Patents
A kind of pedicle nail Download PDFInfo
- Publication number
- CN204337022U CN204337022U CN201420841334.7U CN201420841334U CN204337022U CN 204337022 U CN204337022 U CN 204337022U CN 201420841334 U CN201420841334 U CN 201420841334U CN 204337022 U CN204337022 U CN 204337022U
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- China
- Prior art keywords
- healing
- screw body
- porous
- healing layer
- screw
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- 230000035876 healing Effects 0.000 claims abstract description 90
- 230000004323 axial length Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 17
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 5
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical group [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims description 5
- 210000000988 bone and bone Anatomy 0.000 abstract description 15
- 230000004927 fusion Effects 0.000 abstract description 7
- 230000012010 growth Effects 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 abstract description 5
- 230000002980 postoperative effect Effects 0.000 abstract description 3
- 230000001225 therapeutic effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 108010048734 sclerotin Proteins 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910000771 Vitallium Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008468 bone growth Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000008467 tissue growth Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
- 239000000602 vitallium Substances 0.000 description 1
Abstract
A kind of pedicle nail, relate to vertebral body operation fixture, be made up of screw body and U-shaped nail seat, screw body upper end is connected with U-shaped nail seat, on screw body from upper end to the 1/3-1/2 of screw body axial length be polished rod, the outside of the screw body at polished rod place is provided with porous healing layer, and the screw body of polished rod bottom is provided with screw thread.This utility model tool has the following advantages: pedicle nail is more easily screwed into pedicle of vertebral arch, and it is time saving and energy saving to operate; Little to the shear action of pedicle of vertebral arch, little to the damage of bone, nail close contact, fusion growth are integrated, and pedicle nail is not easily deviate from, and patient's post-operative recovery is fast, and therapeutic effect is good.Be more suitable for using in the operation of spinal column non-fused.
Description
Technical field
The present invention relates to vertebral body operation fixture, say it is a kind of little to pedicle of vertebral arch shear action in detail, nail interface close contact, prevents the pedicle nail that rivet nut is deviate from.
Background technology
We know, spinal column non-fusion technology is on treatment spinal lesion, because it has the damage of spinal column little, maintain mobility and the stability of spinal column, the biomechanics characteristic of reconstruction of intervertebral disc, prevent and alleviate the advantage such as regression acceleration of adjacent segment intervertebral disc, a lot of hospital has started to adopt in recent years, and its application prospect a slice is bright.The pedicle nail used in spinal operation at present comprises staple seat and screw body, and screw body can be being fixedly connected with of fixed angle with staple seat, also can connect into Universal screw nail through bulb, ball cup.Screw thread on the screw body of existing pedicle nail mostly is the constant worm pich being covered with screw body, also has the single thread being at screw body first half, and screw body is latter half of is double thread.Above-mentioned pedicle nail is screwed into pedicle of vertebral arch wastes time and energy, and screw thread is large to the shear action of pedicle of vertebral arch, large to the damage of bone, and nail interfacial contact is not tight, and pedicle nail is easily deviate from; Especially the pedicle nail of existing structure is applied in the operation of spinal column non-fused, movable property between the spinal segments related to owing to performing the operation, in recovery process after surgery, due to the activity of patient, there is the phenomenon of cutting sclerotin in the screw thread of screw body upper end, recover very slow, even there is the danger that pedicle nail is easily deviate from.
Summary of the invention
The object of the invention is to solve above-mentioned the deficiencies in the prior art, provide a kind of pedicle of vertebral arch shear action little, little to the damage of bone, nail interface close contact, prevents the pedicle nail that rivet nut is deviate from.
The present invention solves the problems of the technologies described above adopted technical scheme:
A kind of pedicle nail, be made up of screw body and U-shaped nail seat, screw body upper end is connected with U-shaped nail seat, to it is characterized in that on screw body from upper end to the 1/3-1/2 of screw body axial length be polished rod, the outside of the screw body at polished rod place is provided with porous healing layer, and the screw body of polished rod bottom is provided with screw thread.
Porous healing layer described in the present invention refers to and be provided with healing layer on screw body, is distributed with and the healing hole of the aperture be communicated with outside the layer that heals at 0.01mm-1mm in healing layer.
The thickness of the porous healing layer described in the present invention is 0.1mm-2mm, and healing pore size distribution is in healing layer, and outermost healing hole is communicated with outside healing layer, and the healing hole of healing layer inside is directly or indirectly communicated with outermost healing hole.The porosity of porous healing layer is 10%-80%, preferred 40%-60%.
The preferred 0.2-0.8mm of thickness of the porous healing layer described in the present invention, the preferred 0.03mm-0.3mm in aperture in healing hole.
The healing hole that the healing hole of the porous healing layer inside described in the present invention is adjacent with at least two is connected.
The polished rod place of the screw body described in the present invention is provided with one start screw, and the screw thread on the screw body of polished rod bottom is multiple thread, and one start screw pitch is the multiple thread head several times of multiple thread pitch.One start screw lower end is connected with a multiple-threaded threaded upper end.One start screw is identical with multiple-threaded helical pitch.
Porous healing layer described in the present invention comprises interior porous healing layer and outer porous healing layer, and the material of interior porous healing layer is identical with the material of screw body, and the material of outer porous healing layer is hydroxyapatite.
Screw body tip described in the present invention is with tapering or offer self tapping groove.
The processing methods such as the porous healing layer described in the present invention can be printed by 3D, plasma spray titanium, sintering obtain.
The present invention is working as in implantation bone processes, and because the 1/3-1/2 place of screw body minister degree is polished rod or single thread, pedicle nail is more easily screwed into pedicle of vertebral arch, and it is time saving and energy saving to operate.After pedicle nail implants skeleton, the porous of skeleton and the pedicle nail layer that heals merges and grows up to one, (bone fibres grows into porous by hole of healing and heals in layer, forms the bone fusion layer of the wrong knot that interweaves therein), without obvious nail interface, pedicle nail is not easily deviate from.Because screw body top is without screw thread or only there is the larger minority screw thread of pitch, during patient activity, the phenomenon or the cutting phenomenon that there is not screw body upper end cutting sclerotin are slight, can not produce the phenomenon significantly hindering treatment and recover.The shear action of the present invention to pedicle of vertebral arch is little, little to the damage of bone, and nail close contact, fusion growth are integrated, and pedicle nail is not easily deviate from, and patient's post-operative recovery is fast, and therapeutic effect is good.Be more suitable for using in the operation of spinal column non-fused.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A place partial enlarged drawing of Fig. 1.
Detailed description of the invention
Pedicle nail as shown in Figure 1 and Figure 2, be made up of screw body 3 and U-shaped nail seat 1, screw body 3 upper end is connected with U-shaped nail seat 1, screw body 3 and staple seat 1 can be being fixedly connected with of fixed angle, also Universal vertebra arch root screw can be connected into through bulb, ball cup, the two can hinged or slot clamping be also the monoplane pedicle nail that screw body can only swing in a plane, and above-mentioned annexation belongs to prior art, repeats no more.On the outer surface that the invention is characterized in screw body 3 from upper end to the 1/3-1/2 of screw body 3 axial length be polished rod, the outside of the screw body at polished rod place is provided with porous healing layer, porous healing layer refers to and be provided with healing layer on screw body, be distributed with and the healing hole 8 of the aperture be communicated with outside the layer that heals at 0.01mm-1mm in healing layer, the thickness of porous healing layer is 0.1mm-2mm, healing hole 8 is evenly distributed in porous healing layer, outermost healing hole 8 and porous heal outside layer and are communicated with (namely outermost healing hole is exposed outer at the porous layer that heals), the healing hole of porous healing layer inside is directly or indirectly communicated with outermost healing hole, reach the effect be communicated with outside the layer that to heal with porous, the healing hole that each healing Kong Junyu at least 3 of porous healing layer inside is adjacent is connected, passage 7 diameter that healing hole is interconnected is at 0.005-0.1mm, osseous tissue can interlock growth in porous heals layer, and make skeleton and the porous layer growth that heals heal and be integrated, screw body is not easily deviate from.The porosity of porous healing layer is 10%-80%, preferred 40%-60%.The preferred 0.2-0.8mm of thickness of porous healing layer, the preferred 0.1mm-0.5mm in aperture in healing hole.The outer surface of the screw body of polished rod bottom is provided with screw thread.
The present invention improves further, and the polished rod place of described screw body 3 is provided with one start screw 2, and the screw thread on the screw body of polished rod bottom is multiple thread 4, and single head spiral shell 2 stricture of vagina pitch is the multiple thread head several times of multiple thread 4 pitch.One start screw 2 lower end is connected with a threaded upper end of multiple thread 4; One start screw is identical with multiple-threaded helical pitch.On one start screw and the screw body at one start screw place be provided with porous healing layer.Screw thread on the screw body of polished rod bottom of the present invention is preferably double thread, and one start screw pitch is 2 times of double thread pitch.Reduce screw body top screw thread to sclerotin shear wearing and tearing while, one start screw enters multiple thread and advances in a bone groove of formation, outside the stable row adding the screw body implantation initial stage, the growth healing rate of skeleton at screw body can also be accelerated.Described porous healing layer comprises interior porous healing layer 5 and outer porous healing layer 6, the material of interior porous healing layer 5 is identical with the material of screw body, the material of outer porous healing layer 6 is hydroxyapatite, can enter in the healing hole of porous healing layer by accelerated bone tissue growth.Screw body tip is with tapering or offer self tapping groove; In the present invention, screw body material can be the medical implant such as titanium alloy, vitallium material; Screw thread can adopt any type of tooth form structure; The processing methods such as porous healing layer can be printed by 3D, plasma spraying, sintering obtain.
Pedicle nail of the present invention is in implantation bone processes, and because the 1/3-1/2 place of screw body upper axial length is polished rod or single thread, pedicle nail is more easily screwed into pedicle of vertebral arch, and it is time saving and energy saving to operate.After pedicle nail implants skeleton, the bone growth of skeleton enters to heal in hole, bone and pedicle nail fusion growth are integrated, it is inner that bone fibres grows into porous healing layer by hole of healing, form the bone fusion layer of the wrong knot that interweaves therein, without obvious nail interface between skeleton and pedicle nail, pedicle nail is not easily deviate from.Because screw body top is without screw thread or only there is the larger minority screw thread of pitch (one start screw of coarse pitch), in surgery recovery process, during patient activity, the phenomenon or the cutting phenomenon that there is not the screw thread cutting sclerotin of screw body upper end are slight, can not produce the phenomenon significantly hindering treatment and recover.The shear action of pedicle nail of the present invention to pedicle of vertebral arch is little, little to the damage of bone, and nail close contact, fusion growth are integrated, and pedicle nail is not easily deviate from, and patient's post-operative recovery is fast, and therapeutic effect is good.Be particularly suited for using in the operation of spinal column non-fused.
Claims (9)
1. a pedicle nail, be made up of screw body and U-shaped nail seat, screw body upper end is connected with U-shaped nail seat, to it is characterized in that on screw body from upper end to the 1/3-1/2 of screw body axial length be polished rod, the outside of the screw body at polished rod place is provided with porous healing layer, and the screw body of polished rod bottom is provided with screw thread.
2. pedicle nail according to claim 1, is characterized in that described porous healing layer refers to and be provided with healing layer on screw body, be distributed with and the healing hole of the aperture be communicated with outside the layer that heals at 0.01mm-1mm in healing layer.
3. pedicle nail according to claim 2, the thickness that it is characterized in that described porous healing layer is 0.1mm-2mm, healing hole is evenly distributed in healing layer, outermost healing hole is communicated with outside healing layer, and the healing hole of healing layer inside is directly or indirectly communicated with outermost healing hole.
4. the pedicle nail according to Claims 2 or 3, is characterized in that the healing hole adjacent with at least two, the healing hole of described healing layer inside is connected.
5. the pedicle nail according to claim 1 or 2 or 3, it is characterized in that the polished rod place of described screw body is provided with one start screw, screw thread on the screw body of polished rod bottom is multiple thread, and one start screw pitch is the multiple thread head several times of multiple thread pitch.
6. the pedicle nail according to claim 1 or 2 or 3, it is characterized in that described porous healing layer comprises interior porous healing layer and outer porous healing layer, the material of interior porous healing layer is identical with the material of screw body, and the material of outer porous healing layer is hydroxyapatite.
7. pedicle nail according to claim 4, it is characterized in that the polished rod place of described screw body is provided with one start screw, the screw thread on the screw body of polished rod bottom is multiple thread, and one start screw pitch is the multiple thread head several times of multiple thread pitch.
8. pedicle nail according to claim 4, it is characterized in that described pedicle nail, it is characterized in that described porous healing layer comprises interior porous healing layer and outer porous healing layer, the material of interior porous healing layer is identical with the material of screw body, and the material of outer porous healing layer is hydroxyapatite.
9. pedicle nail according to claim 5, it is characterized in that described pedicle nail, it is characterized in that described porous healing layer comprises interior porous healing layer and outer porous healing layer, the material of interior porous healing layer is identical with the material of screw body, and the material of outer porous healing layer is hydroxyapatite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420841334.7U CN204337022U (en) | 2014-12-27 | 2014-12-27 | A kind of pedicle nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420841334.7U CN204337022U (en) | 2014-12-27 | 2014-12-27 | A kind of pedicle nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204337022U true CN204337022U (en) | 2015-05-20 |
Family
ID=53220331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420841334.7U Active CN204337022U (en) | 2014-12-27 | 2014-12-27 | A kind of pedicle nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204337022U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104398297A (en) * | 2014-12-27 | 2015-03-11 | 山东威高骨科材料股份有限公司 | Pedicle screw |
| US10575886B2 (en) | 2018-05-09 | 2020-03-03 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
| US10993753B2 (en) | 2018-05-09 | 2021-05-04 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
| US11191582B2 (en) | 2018-05-09 | 2021-12-07 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
| US11224470B2 (en) | 2018-05-09 | 2022-01-18 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
-
2014
- 2014-12-27 CN CN201420841334.7U patent/CN204337022U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104398297A (en) * | 2014-12-27 | 2015-03-11 | 山东威高骨科材料股份有限公司 | Pedicle screw |
| US10575886B2 (en) | 2018-05-09 | 2020-03-03 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
| US10993753B2 (en) | 2018-05-09 | 2021-05-04 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
| US11191582B2 (en) | 2018-05-09 | 2021-12-07 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
| US11224470B2 (en) | 2018-05-09 | 2022-01-18 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
| US11589907B2 (en) | 2018-05-09 | 2023-02-28 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
| US11857233B2 (en) | 2018-05-09 | 2024-01-02 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |