CN211862942U - Spinal facet joint interapophysis bone long closes porous screw - Google Patents
Spinal facet joint interapophysis bone long closes porous screw Download PDFInfo
- Publication number
- CN211862942U CN211862942U CN202020186736.3U CN202020186736U CN211862942U CN 211862942 U CN211862942 U CN 211862942U CN 202020186736 U CN202020186736 U CN 202020186736U CN 211862942 U CN211862942 U CN 211862942U
- Authority
- CN
- China
- Prior art keywords
- screw
- nail
- tail
- porous
- facet joint
- 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 title claims abstract description 53
- 210000002517 zygapophyseal joint Anatomy 0.000 title claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 43
- 239000011664 nicotinic acid Substances 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 34
- 230000008569 process Effects 0.000 claims abstract description 30
- 238000010079 rubber tapping Methods 0.000 claims abstract description 25
- 241000587161 Gomphocarpus Species 0.000 claims abstract description 22
- 239000011148 porous material Substances 0.000 claims description 6
- 230000001788 irregular Effects 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000005520 cutting process Methods 0.000 abstract description 4
- 230000001976 improved effect Effects 0.000 abstract description 4
- 238000010883 osseointegration Methods 0.000 abstract description 4
- 230000004927 fusion Effects 0.000 description 20
- 230000001965 increasing effect Effects 0.000 description 6
- 230000001737 promoting effect Effects 0.000 description 5
- 230000024245 cell differentiation Effects 0.000 description 4
- 238000010146 3D printing Methods 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 3
- 230000008468 bone growth Effects 0.000 description 3
- 230000021164 cell adhesion Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 208000034693 Laceration Diseases 0.000 description 2
- 208000028389 Nerve injury Diseases 0.000 description 2
- 241001079814 Symphyotrichum pilosum Species 0.000 description 2
- 235000004224 Typha angustifolia Nutrition 0.000 description 2
- 210000001188 articular cartilage Anatomy 0.000 description 2
- 210000001951 dura mater Anatomy 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008764 nerve damage Effects 0.000 description 2
- 210000000278 spinal cord Anatomy 0.000 description 2
- 208000020307 Spinal disease Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003592 biomimetic effect Effects 0.000 description 1
- 210000000845 cartilage Anatomy 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003412 degenerative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 206010039722 scoliosis Diseases 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 208000037959 spinal tumor Diseases 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 210000001835 viscera Anatomy 0.000 description 1
Images
Landscapes
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The utility model relates to a vertebra fixing device's technical field can assist the vertebra facet joint after the fixed of spine nail stick system to merge suddenly, specifically is a bone growing closes porous screw between spine facet joint suddenly. The porous screw comprises a screw head, a screw body and a screw tail, wherein the screw head is arranged at one end of the screw body, and the screw tail is arranged at the other end of the screw body; one or more self-tapping grooves are arranged on the nail head; the main body of the nail body is of a bionic porous metal structure, and thread structures are uniformly distributed on the outer part of the main body; the nail tail is provided with a Mitsubishi groove. The utility model discloses the screw can be for the bone length to go into and provide the support effect to overcome the gap between articular process or the not enough shortcoming that leads to the osseointegration rate not enough of bone grafting volume, improved the osseointegration rate, increase the stability of backbone, reduce the possibility that interior fixture became invalid. The utility model is also provided with a self-tapping groove, which increases the cutting of the nail head and reduces the resistance of screwing in the screw; meanwhile, the nail tail is also provided with the Mitsubishi groove, which is beneficial to being held by the tip of a screwdriver, so that the screw can be smoothly screwed in.
Description
Technical Field
The utility model relates to a vertebra fixing device's technical field can assist the vertebra facet joint after the fixed of spine nail stick system to merge suddenly, specifically is a bone growing closes porous screw between spine facet joint suddenly.
Background
The skeleton of the spine of a human body is formed by connecting 33 vertebrae (7 cervical vertebrae, 12 thoracic vertebrae, 5 lumbar vertebrae, 9 sacrum and coccyx) by ligaments, joints and intervertebral discs, and the spine has the functions of supporting the trunk, protecting internal organs, protecting the spinal cord and performing sports. The spine has flexible motion functions in addition to support and protection functions. Although the range of motion between two adjacent vertebrae is small, the motion between most vertebrae is summed up to allow for a larger range of motion, including flexion, lateral flexion, rotation, and rotation.
However, the spine is sometimes affected by genetic or acquired trauma, diseases (such as spinal tumor, scoliosis, degenerative spinal disease, etc.), etc., and may cause deformation or instability of the spine, which may press the nervous system in the vertebral canal, thereby causing corresponding clinical symptoms. At this time, surgical treatment is required, and an intraspinal fixation system is installed on a vertebral body to increase the stability of the vertebral column, and soft tissues around the relevant intervertebral space, the facet joint process and the transverse process are treated to perform bone grafting fusion so as to restore the sequence and stability of the vertebral column.
There are three main types of spinal fusion: 1, intervertebral grafting bone fusion through intervertebral space; 2, bone grafting fusion between transverse processes; 3, facet articular process fusion. The intervertebral interbody fusion is a common fusion mode at present, and the fusion mode has wide bone grafting bed, sufficient bone grafting amount and higher fusion rate, but has long operation time, large bleeding amount and increased operation risk; the transverse process bone grafting fusion is relatively less in application, the bone grafting bed is not exact due to the large bone grafting gap between the transverse processes, the bone grafting absorption is easy to cause, and the fusion rate is low; the facet joint process is simple to fuse, but the bone grafting space is narrow, the bone grafting amount is small, and the fusion rate is not high.
The present research shows that the porous metal structure has the functional characteristics of increasing cell adhesion, promoting cell differentiation, inducing bone ingrowth and the like, so that a screw with the porous metal structure is expected to be designed for promoting the bone fusion between the spinal facet joint processes, thereby assisting the long-term stability of the spinal nail-rod system after fixation. Meanwhile, the screw is small in size, the spinal facet joint protrudes close to the spinal cord, and the operation risk is high, so that the screw is required to be stably combined with a screwdriver in the implanting process, and the screwing process needs to be as labor-saving as possible.
SUMMERY OF THE UTILITY MODEL
Utility model purpose:
the utility model aims at providing a bone growing closes porous screw between facet joint process that can assist the fixed back of spine nail stick system to promote the apophyseal bone of vertebra to fuse.
The technical scheme is as follows:
the utility model discloses a realize through following technical scheme:
a spine facet joint interapophysis bone long-closed porous screw comprises a screw head, a screw body and a screw tail, wherein the screw head is arranged at one end of the screw body, and the screw tail is arranged at the other end of the screw body; one or more self-tapping grooves are arranged on the nail head; the main body of the nail body is of a bionic porous metal structure, and thread structures are uniformly distributed on the outer part of the main body; the nail tail is provided with a Mitsubishi groove.
Furthermore, the bionic porous metal structure of the nail body main body adopts a bionic bone trabecula porous structure, and the bionic porous metal structure is composed of communicated irregular holes.
Furthermore, the porosity of the bionic porous metal structure is 60-75%, and the pore diameter is 300-900 μm.
Furthermore, the porosity of the bionic porous metal structure is 70%, and the pore diameter is 550 μm.
Further, the thread structure outside the main part of the nail body is fixed on the outer side of the bionic porous metal structure, and the thread space between threads is 0.6 mm-1.0 mm.
Furthermore, the overall length of the screw is 8-16 mm, the diameter of the screw is 2.0-3.0 mm, and the tail of the screw is in a countersunk head design with a tail cap or without the tail cap.
Furthermore, the rhombus groove on the nail tail is integrally a triangular cone, and the depth in the vertical direction is 2-3 mm; the triangular groove is an equilateral triangle, and the center of the triangular groove is the same as the center of the nail tail.
Furthermore, in the nail tail without the tail cap, the diameter of the nail tail is the same as that of the nail body; the diameter of the tail of the nail with the tail cap is 3.0-4.0 mm.
Furthermore, the conical nail head is provided with a self-tapping groove which is in an inclined triangular cone shape, and the depth of the self-tapping groove is one fourth of the radial diameter of the nail body.
The advantages and effects are as follows:
the utility model has the advantages of as follows and beneficial effect:
1. the bionic porous metal structure has the functional characteristics of increasing cell adhesion, promoting cell differentiation, inducing bone ingrowth and the like, and the designed spinal facet joint interapophysis porous screw is used for promoting spinal facet joint interapophysis fusion. The screw can provide a support function for bone growth, so that the defect of insufficient bone fusion rate caused by insufficient gap between articular processes or insufficient bone grafting amount is overcome, the bone fusion rate is improved, the stability of a spine is improved, and the possibility of failure of an internal fixture is reduced. Compared with the traditional transfixion through intervertebral disc space, the facet joint process fusion can obviously reduce the amount of bleeding during operation, shorten the operation time and reduce the occurrence of complications on hands such as nerve injury, dura mater laceration and the like.
2. The utility model is also provided with a self-tapping groove, which increases the cutting force of the nail head and reduces the resistance of screwing in the screw; meanwhile, the nail tail is also provided with the Mitsubishi groove, which is beneficial to the combination of the screw and the screwdriver, so that the screw can be smoothly screwed in.
Drawings
FIG. 1 is a general schematic view of a porous screw with a tail cap;
FIG. 2 is an overall schematic view of a tailless cap porous screw;
FIG. 3 is a partial schematic view of a Mitsubishi slot on the tail nail;
FIG. 4 is a partial schematic view of a bionic porous metal structure.
Description of reference numerals:
1. a nail head; 2. a nail body; 3. nailing tail; 4. self-tapping a groove; 5. a Mitsubishi groove; 6. a biomimetic porous metal structure.
Detailed Description
The utility model discloses the screw can be for bone growth to go into and provide the support effect to overcome the gap between articular process and leaded to the not enough shortcoming of osseointegration rate, improved osseointegration rate, increased the stability of backbone, the possibility of fixture inefficacy in the reduction. The screw operation process is simple, and compared with the traditional transforaminal bone grafting fusion, the facet joint process fusion can obviously reduce the amount of bleeding during operation, shorten the operation time, and reduce the occurrence of complications on the hand such as nerve injury, dura mater laceration and the like. Along with the continuous development of material science, the continuous promotion of metal manufacturing process and 3D printing technique, the screw manufacturing process that has porous metal structure is very ripe, the utility model discloses the screw passes through 3D printing technique preparation production.
A spine facet joint interapophysis bone long-closed porous screw comprises a screw head 1, a screw body 2 and a screw tail 3, wherein the screw head 1 is arranged at one end of the screw body 2, and the screw tail 3 is arranged at the other end of the screw body 2; one or more self-tapping grooves 4 are arranged on the nail head 1; the main body of the nail body 2 is a bionic porous metal structure 6, and the outer part of the main body is uniformly distributed with a thread structure; the nail tail 3 is provided with a Mitsubishi groove 5.
The nail head 1 is provided with a self-tapping groove, so that the cutting force of the nail head can be increased, and the resistance of screwing in a screw is reduced; the nail body 2 is of a porous metal structure, can be manufactured by applying a metal 3D printing technology, can provide a support effect for bone ingrowth and promote facet joint process fusion; the screw structure which is uniformly distributed is arranged outside the nail body 2, so that after the small articular process gap is screwed in, part of residual articular cartilage can be further broken, and better conditions can be provided for bone ingrowth; the screw tail 3 is designed to be a tail cap or a countersunk head without a tail cap, if a cross-shaped tail notch is adopted, the screwdriver is favorably held, so that the screw is smoothly screwed in, and meanwhile, the Mitsubishi groove 5 is also involved to ensure that the front end of the screwdriver can be contacted with the Mitsubishi groove, so that the screwdriver is convenient to screw.
As shown in figure 4, the bionic porous metal structure 6 of the nail body 2 adopts a bionic trabecular porous structure, and the bionic porous metal structure 6 is composed of communicated irregular holes.
The bionic porous metal structure 6 has a porosity of 60-75% and a pore diameter of 300-900 μm.
Wherein the optimal value is that the porosity of the bionic porous metal structure 6 is 70 percent and the pore diameter is 550 mu m.
Bionic porous metal structure has the increase cell adhesion, promotes the cell differentiation, and induced bone grows into functional characteristics such as, and the utility model discloses set the 2 main parts of the nail body into bionic bone trabecula porous structure, compare with bee groove form porous structure, adopt bionic structure, its aperture size is not the same, its mechanical properties is similar with human nature cancellous bone with geometric construction, and this is that even aperture can't reach, and this kind of structure is favorable to improving the bone integration condition after artifical implant implants. Meanwhile, the function of promoting cell differentiation of the screw under certain strength is further ensured by adjusting the porosity and the aperture.
The thread structure outside the main body of the nail body 2 is fixed on the outer side of the bionic porous metal structure 6, and the thread space between threads is 0.6 mm-1.0 mm; the pitch of the thread is such as to ensure the stability of the screw adequately.
The effect of screw thread is getting into fast screwing up the in-process, can also guarantee the major structure of the nail body simultaneously, guarantees the intensity of the nail body of bionical porous metal structure. The thread can further damage partial residual articular cartilage while ensuring the stability of the screw, thereby providing better conditions for bone ingrowth.
The overall length of the screw is 8-16 mm, the diameter of the screw is 2.0-3.0 mm, and the tail 3 of the screw is designed to be provided with a tail cap or a countersunk head without the tail cap.
The rhombus groove 5 on the nail tail 3 is integrally triangular cone, and the depth in the vertical direction is 2 mm-3 mm; the triangular groove 5 is an equilateral triangle, and the center of the triangular groove 5 is the same as the center of the nail tail 3.
The triangular groove 5 is an equilateral triangle in plan view, has a certain depth, and is convenient for the front end of the screwdriver to insert.
In the nail tail 3 without the tail cap, the diameter of the nail tail 3 is the same as that of the nail body 2; the diameter of the nail tail 1 with the tail cap is 1.0mm larger than that of the screw, and is generally 3.0-4.0 mm.
The nail tail 3 has two types, and the tail cap or no tail cap all can, can use different kinds of screws in different positions, also guarantees that the kind of screw is various, the practical application of being convenient for.
The crossed tail notch of the nail tail 3 and the triangular groove in the center of the crossed tail notch are beneficial to holding a screwdriver matched with the crossed tail notch, and due to the fact that the screw is small and the crossed groove is shallow, a proper amount of bone wax is smeared at the raised triangular top end of the screwdriver in operation, and the binding force between the screwdriver and the screw is increased.
The conical nail head 1 is provided with a self-tapping groove 4 which is in the shape of an inclined triangular cone and the depth of the self-tapping groove is 1/4 of the diameter of the screw at the position of the self-tapping groove, namely the depth of the self-tapping groove 4 is one fourth of the radial diameter of the nail body 2 of the screw.
As shown in fig. 1, the distance between the deepest depth of the groove of the tapping groove 4 and the outer circumferential side of the head is 1/4 of the shank diameter of the screw. Gradually expands from the deepest depth to the outside and is shaped like a triangular cone.
The self-tapping slot 4 of the stud 1 increases the cutting of the stud 1 and reduces the resistance to screwing in the screw.
As shown in fig. 1, since the main body of the nail body 2 is the bionic porous metal structure 6, and since the nail body is porous, the drawing is a structural drawing, and it can be clearly seen about the partial enlargement of the bionic porous metal structure 6 specifically combined with fig. 4. Meanwhile, the bionic porous metal structure in the figures 2 and 3 is omitted for neatness.
Example 1
A spine facet joint interapophysis bone long-closed porous screw comprises a screw head 1, a screw body 2 and a screw tail 3, wherein the screw head 1 is arranged at one end of the screw body 2, and the screw tail 3 is arranged at the other end of the screw body 2; the nail head 1 is provided with a self-tapping groove 4; the main body of the nail body 2 is a bionic porous metal structure 6, and the outer part of the main body is uniformly distributed with a thread structure; the nail tail 3 is provided with a Mitsubishi groove 5.
Example 2
The spinal column facet joint interapophysis bone long closes porous screw with the tail cap.
As shown in fig. 1 and 3, a spinal facet joint interapophysis bone-growth porous screw comprises a nail head 1, a nail body 2 and a nail tail 3, wherein the nail head 1 is arranged at one end of the nail body 2, and the nail tail 3 is arranged at the other end of the nail body 2; the nail head 1 is provided with a self-tapping groove 4; the main body of the nail body 2 is a bionic porous metal structure 6, and the outer part of the main body is uniformly distributed with a thread structure; the nail tail 3 is provided with a Mitsubishi groove 5.
The bionic porous metal structure 6 of the nail body 2 main body adopts a bionic bone trabecula porous structure, and the bionic porous metal structure 6 is composed of communicated irregular holes. The whole length of the screw is 10mm, the diameter is 2.5mm, and the tail 3 of the screw is provided with a countersunk head design of a tail cap. The screw thread structure outside the main part of the nail body 2 is fixed on the outer side of the bionic porous metal structure 6, and the screw thread space between the screw threads is 1.0 mm. The rhombus groove 5 on the nail tail 3 is integrally triangular cone, and the depth in the vertical direction is 2 mm-3 mm; the triangular groove 5 is an equilateral triangle, and the center of the triangular groove 5 is the same as the center of the nail tail 3. The diameter of the nail tail 1 is 1.0mm larger than that of the screw and is 3.5 mm. The self-tapping groove is in an inclined triangular cone shape, and the depth of the self-tapping groove is one fourth of the radial diameter of the nail body 2.
Example 3
The intervertebral bone of the spinal facet joint processes of the tail cap-free long-closed porous screw.
As shown in figure 2, the spinal facet joint interapophysis long-closed porous screw comprises a nail head 1, a nail body 2 and a nail tail 3, wherein the nail head 1 is arranged at one end of the nail body 2, and the nail tail 3 is arranged at the other end of the nail body 2; the nail head 1 is provided with a self-tapping groove 4; the main body of the nail body 2 is a bionic porous metal structure 6, and the outer part of the main body is uniformly distributed with a thread structure; the nail tail 3 is provided with a Mitsubishi groove 5. The rhombus groove 5 on the nail tail 3 is integrally triangular cone, and the depth in the vertical direction is 2 mm-3 mm; the triangular groove 5 is an equilateral triangle with the depth of 0.5-1.5 mm, and the center of the triangular groove 5 is the same as the center of the nail tail 3.
As shown in figure 4, the bionic porous metal structure 6 of the nail body 2 adopts a bionic trabecular porous structure, and the bionic porous metal structure 6 is composed of communicated irregular holes. Wherein, the bionic porous metal structure 6 has the porosity of 70 percent and the aperture of 550 mu m.
The screw thread structure outside the main part of the nail body 2 is fixed on the outer side of the bionic porous metal structure 6, and the screw thread space between the screw threads is 0.8 mm. The whole length of the screw is 8mm, the diameter is 2.0mm, and the tail 3 is selected to be provided with a countersunk head design without a tail cap. The nail tail 3 without the tail cap ensures that no protruding structure exists outside the bone in the fixing process, and is more convenient.
The conical nail head 1 is provided with a self-tapping groove 4 which is in an inclined triangular cone shape and the depth of the self-tapping groove is one fourth of the radial diameter of the nail body 2.
The utility model discloses a use method.
After the exposure of the rear spine bone structure is completed, the electric coagulation function of the electric knife is used for destroying the facet joint cartilage of the segment to be fused, after the fixation and decompression of the spine nail rod system are completed, the screw is screwed in along the joint gap direction by using a screwdriver matched with the screw, the specific angle is determined according to the condition in the operation, the screw has different model specifications, and the length and the diameter of the screw are selected according to the width and the depth of the facet joint gap of the fused segment.
It should be understood that the above examples are only for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious changes and modifications are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a porous screw of bone accretion between facet joint process of spine which characterized in that: comprises a nail head (1), a nail body (2) and a nail tail (3), wherein the nail head (1) is arranged at one end of the nail body (2), and the nail tail (3) is arranged at the other end of the nail body (2);
one or more self-tapping grooves (4) are arranged on the nail head (1);
the main body of the nail body (2) is a bionic porous metal structure (6), and the outer part of the main body is uniformly distributed with a thread structure;
the nail tail (3) is provided with a Mitsubishi groove (5).
2. The interspinous process bone ingrowth porous screw of the spinal facet joint as recited in claim 1, wherein: the bionic porous metal structure (6) of the nail body (2) main body adopts a bionic bone trabecula porous structure, and the bionic porous metal structure (6) is composed of communicated irregular holes.
3. The interspinous process bone ingrowth porous screw of claim 2, wherein: the bionic porous metal structure (6) has a porosity of 60-75% and a pore diameter of 300-900 μm.
4. The interspinous process bone ingrowth porous screw of claim 2 or claim 3, wherein: the bionic porous metal structure (6) has the porosity of 70% and the pore diameter of 550 mu m.
5. The interspinous process bone ingrowth porous screw of the spinal facet joint as recited in claim 1, wherein: the screw thread structure outside the main body of the nail body (2) is fixed on the outer side of the bionic porous metal structure (6), and the distance between the screw threads is 0.6 mm-1.0 mm.
6. The interspinous process bone ingrowth porous screw of the spinal facet joint as recited in claim 1, wherein: the overall length of the screw is 8-16 mm, the diameter of the screw is 2.0-3.0 mm, and the tail (3) is provided with a tail cap or a countersunk head design without the tail cap.
7. The interspinous process bone ingrowth porous screw of claim 1 or 6, wherein: the rhombus groove (5) on the nail tail (3) is integrally triangular pyramid, and the depth in the vertical direction is 2-3 mm; the Mitsubishi slot (5) is an equilateral triangle, and the center of the Mitsubishi slot (5) is the same as that of the nail tail (3).
8. The interspinous process bone ingrowth porous screw of claim 1 or 6, wherein: in the nail tail (3) without the tail cap, the diameter of the nail tail (3) is the same as that of the nail body (2); the diameter of the nail tail (3) with the tail cap is 3.0-4.0 mm.
9. The interspinous process bone ingrowth porous screw of the spinal facet joint as recited in claim 1, wherein: the conical nail head (1) is provided with a self-tapping groove (4) which is in an inclined triangular cone shape, and the depth of the self-tapping groove (4) is one fourth of the radial diameter of the nail body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020186736.3U CN211862942U (en) | 2020-02-20 | 2020-02-20 | Spinal facet joint interapophysis bone long closes porous screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020186736.3U CN211862942U (en) | 2020-02-20 | 2020-02-20 | Spinal facet joint interapophysis bone long closes porous screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211862942U true CN211862942U (en) | 2020-11-06 |
Family
ID=73253386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020186736.3U Expired - Fee Related CN211862942U (en) | 2020-02-20 | 2020-02-20 | Spinal facet joint interapophysis bone long closes porous screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211862942U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113509255A (en) * | 2021-07-13 | 2021-10-19 | 北京市春立正达医疗器械股份有限公司 | Novel bone nail |
| CN115635082A (en) * | 2022-10-12 | 2023-01-24 | 北京科技大学 | Degradable porous metal bone nail and additive manufacturing method thereof |
-
2020
- 2020-02-20 CN CN202020186736.3U patent/CN211862942U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113509255A (en) * | 2021-07-13 | 2021-10-19 | 北京市春立正达医疗器械股份有限公司 | Novel bone nail |
| CN115635082A (en) * | 2022-10-12 | 2023-01-24 | 北京科技大学 | Degradable porous metal bone nail and additive manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2023203551A1 (en) | Spinal implant with porous and solid surfaces | |
| US9198774B2 (en) | Intervertebral disk cage and stabilizer | |
| US9579213B2 (en) | Intervertebral expandable cage system and its instrument | |
| JP2022084744A (en) | Implants for tissue fixation and fusion | |
| US20090171394A1 (en) | Devices And Methods For The Treatment Of Facet Joint Disease | |
| CN211862942U (en) | Spinal facet joint interapophysis bone long closes porous screw | |
| US20070050028A1 (en) | Spinal implants and methods of providing dynamic stability to the spine | |
| CN209048367U (en) | Oblique lateral approach lumbar intervertebral merges fixed device | |
| CN113786234A (en) | Anterior cervical steel plate, lifting device and internal fixing system used in ACAF (anterior cervical spine extension) operation | |
| CN106308916B (en) | Artificial vertebral body fixed system | |
| CN216021331U (en) | Anterior cervical steel plate, lifting device and internal fixing system used in ACAF (anterior cervical spine extension) operation | |
| CN110314020A (en) | A kind of zero incisura cervical fusion cage of self-tapping type | |
| CN203244474U (en) | Hip joint simple combined handle | |
| CN107569308B (en) | Porous integrated cervical vertebra fusion device | |
| CN203802555U (en) | Fixing system in anterior cervical spine | |
| CN203244471U (en) | Simple combined handle of artificial implanting hip joint | |
| CN110192934A (en) | Alaossisilii filling prosthesis | |
| CN211485104U (en) | Self-tapping zero-notch cervical interbody fusion cage | |
| CN105943203B (en) | Comprehensive adjustable intervertebral fixes fusion device | |
| CN210727937U (en) | Ilium wing filling prosthesis | |
| CN103622767A (en) | Lumbar fusion cage for intervertebral foramen approach | |
| CN210301308U (en) | Adjustable self-stability lumbosacral segment artificial vertebral body | |
| CN217040257U (en) | 3D prints porous associative nature low modulus osseointegration pedicle of vertebral arch screw of entity | |
| CN203315123U (en) | Simple artificial hip joint femoral component prosthesis | |
| CN208910454U (en) | A kind of undercut mark On Fluctuations pedicle nail with pooling feature |
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: 20201106 |