CN220370051U - Artificial pedicle and intramedullary nail for vertebral arch - Google Patents
Artificial pedicle and intramedullary nail for vertebral arch Download PDFInfo
- Publication number
- CN220370051U CN220370051U CN202320329755.0U CN202320329755U CN220370051U CN 220370051 U CN220370051 U CN 220370051U CN 202320329755 U CN202320329755 U CN 202320329755U CN 220370051 U CN220370051 U CN 220370051U
- Authority
- CN
- China
- Prior art keywords
- pedicle
- intramedullary nail
- artificial
- arch
- vertebral arch
- 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.)
- Active
Links
- 238000002513 implantation Methods 0.000 claims abstract description 11
- 210000000988 bone and bone Anatomy 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 8
- 239000002639 bone cement Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 230000001054 cortical effect Effects 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 3
- 230000004927 fusion Effects 0.000 claims description 2
- 239000007943 implant Substances 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 208000008035 Back Pain Diseases 0.000 description 2
- 208000008930 Low Back Pain Diseases 0.000 description 2
- 230000007850 degeneration Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 206010050296 Intervertebral disc protrusion Diseases 0.000 description 1
- 208000007103 Spondylolisthesis Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003412 degenerative effect Effects 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 208000005198 spinal stenosis Diseases 0.000 description 1
Landscapes
- Prostheses (AREA)
Abstract
The utility model provides an artificial vertebral pedicle and a vertebral arch intramedullary nail, wherein the artificial vertebral pedicle is of a cylindrical structure, the top of the artificial vertebral pedicle is an implantation side, the tail of the artificial vertebral pedicle is a holding side and is provided with a connecting hole connected with a holder, the artificial vertebral pedicle is provided with a hollow hole which is longitudinally communicated, the artificial vertebral pedicle is implanted into the cut vertebral pedicle through a holding tool, so that the vertebral pedicle is kept in an extended state, and the vertebral arch intramedullary nail passes through the hollow hole to finish positioning and mounting of the vertebral arch intramedullary nail.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to an artificial pedicle and an intramedullary nail of a vertebral arch.
Background
The lumbar disc herniation, spinal stenosis, lumbar spondylolisthesis, degenerative lumbar lateral curvature and other diseases are often accompanied with one-side or two-side extremely narrow intervertebral space, and in the treatment process, the narrow spinal canal is required to be enlarged and the intervertebral foramen of the intervertebral space is required to be enlarged in a fixed extension mode, so that the clamping pressure of the dural sac and the nerve root is relieved, and the diseases are cured. The internal fixation extension device of the pedicle of vertebral arch in the prior art adopts an internal and external nested two-layer screw structure, the external screw is divided into a front part and a rear part, and the internal screw and the external screw can be connected through threads. When the pedicle is implanted, the inner screw and the outer screw are screwed together, and when the front and the rear parts of the outer screw reach the fracture of the pedicle, the front and the rear parts of the outer screw can be separated by screwing the inner screw, so that the extension and the fixation of the pedicle are realized.
However, the method for nesting the inner screw and the outer screw still has the defects that: 1. the diameter of the outer screw is generally larger to ensure the strength of the inner screw, and the larger diameter of the outer screw limits the application range of the screw and can only be used for specific lumbar and sacral vertebrae. 2. The extension direction of the pedicle can only follow the direction of the screw, and can not be mutually adapted to the articular processes of the head and tail end sections, and the slippage, the degeneration and the lumbago of the adjacent sections are easily caused. 3. The holding force of the screw is poor after the extension, so bone cement is difficult to be injected into the vertebral body. 4. After the outer screw is separated from the front and back, the outer screw is difficult to take out, so that the operation repair is difficult.
Disclosure of Invention
The utility model aims to provide an artificial pedicle and a vertebral arch intramedullary nail, which adopt the implanted pedicle cut-off surface of the artificial pedicle, and the vertebral arch intramedullary nail passes through the artificial pedicle to achieve the effect of prolonging the fixation of the vertebral pedicle.
In order to achieve the above purpose, the artificial vertebral pedicle and the vertebral arch intramedullary nail are in a cylindrical structure, the top of the artificial vertebral pedicle is an implantation side, the tail of the artificial vertebral pedicle is a holding side and is provided with a connecting hole connected with a holder, the artificial vertebral pedicle is provided with a hollow hole which is longitudinally communicated, the artificial vertebral pedicle is implanted into the cut vertebral pedicle through a holding tool, so that the vertebral pedicle is kept in an extended state, and the vertebral arch intramedullary nail penetrates through the hollow hole to finish positioning and mounting of the vertebral arch intramedullary nail.
Further, the diameter of the top of the artificial pedicle is smaller than that of the tail of the artificial pedicle, so that implantation of the artificial pedicle is facilitated.
Further, the top and the side of the artificial pedicle are provided with anti-skid lines.
Furthermore, the wall of the artificial pedicle is of a loose porous structure, and is prefilled with bone inducing materials.
Further, the artificial pedicle is made of bone fusion material.
Further, the inside of the vertebral arch intramedullary nail is of a hollow structure for accommodating a guide wire to pass through, and the tail part is provided with a side opening for injecting bone cement.
Furthermore, the vertebral arch intramedullary nail is of a conical structure, the diameter of the front nail body is smaller, and the diameter of the rear nail body is larger.
Further, threads are arranged on the outer surface of the vertebral arch intramedullary nail and in the hollow hole of the artificial vertebral pedicle, the front thread of the vertebral arch intramedullary nail is a cancellous bone thread, and the rear thread is a cortical bone thread.
The utility model has the following technical progress and effects
1. The artificial pedicle is adopted to replace an external screw, has small size and flexible installation, and can adapt to different lumbar vertebrae and sacral vertebrae.
2. The extension direction of the vertebral pedicle can be flexibly adjusted by adjusting the placement position of the artificial vertebral pedicle, so that the joint processes of the head and tail end sections are mutually adapted, and the adjacent sections are prevented from slipping, degeneration and lumbago.
3. The inside of the vertebral arch intramedullary nail is of a hollow structure, and the tail part is provided with a side opening so as to be convenient for injecting bone cement.
4. The artificial pedicle is convenient for operation and taking out after the pedicle intramedullary nail is separated.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic view of the structure of an artificial pedicle according to one embodiment of the utility model.
Fig. 2 is a schematic view of the structure of a pedicle intramedullary nail according to one embodiment of the utility model.
Fig. 3 is a schematic illustration of the puncture installation of an artificial pedicle and pedicle intramedullary nail according to one embodiment of the utility model.
Fig. 4 is a schematic view of the installation of an artificial pedicle and pedicle intramedullary nail through a guide as per one embodiment of the utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is to be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with one another without conflict.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the present application.
As shown in fig. 1 and 2, the present utility model includes an artificial pedicle and intramedullary nail. The artificial pedicle 1 has a cylindrical structure, wherein the top of the artificial pedicle 1 is an implantation side, the tail is a holding side and a connecting hole 11 connected with the holder 3 is provided.
In a preferred embodiment, to facilitate implantation of the artificial pedicle 1, the diameter of the top of the artificial pedicle 1 is smaller than the diameter of the tail, forming a frustoconical structure.
The artificial pedicle 1 is provided with a hollow hole 12 passing longitudinally therethrough, the hollow hole 12 being adapted to accommodate the passage of the arcus vertebrae intramedullary nail 2.
The tail of the artificial pedicle 1 is provided with a connecting hole 11, and the connecting hole 11 is used for connecting with a connector of the holder 3.
In a preferred embodiment, the top and sides of the artificial pedicle 1 are provided with anti-slip lines to prevent the artificial pedicle 1 from moving and exiting during implantation.
The wall of the artificial pedicle 1 is of a loose porous structure so as to facilitate bone ingrowth and is prefilled with bone inducing materials.
The vertebral arch intramedullary nail 2 is hollow in the inside and is used for accommodating a guide wire to pass through, and the tail part is provided with a side opening for injecting bone cement.
The vertebral arch intramedullary nail is of a conical structure, the diameter of the front nail body is smaller, and the diameter of the rear nail body is larger.
In a preferred embodiment, threads are provided on the outer surface of the pedicle screw 2 and in the hollow hole 12 of the artificial pedicle 1, the anterior threads of the pedicle screw 2 being cancellous threads and the posterior threads being cortical threads. The inside of the vertebral arch intramedullary nail 2 is hollow for receiving the guide wire therethrough, and the tail has a lateral opening 21 for injecting bone cement.
Fig. 3 is a schematic illustration of the puncture installation of an artificial pedicle and pedicle intramedullary nail according to one embodiment of the utility model. As shown in fig. 3, the pedicles are cut off and extended by using a tool before implantation, and the artificial pedicles 1 are implanted from the side of the pedicles by holding the tool 3, so that the pedicles are maintained in an extended state. The pedicle screw 2 is held by a screwdriver 4 through the hollow hole 12 of the artificial pedicle 1 to complete the installation and fixation of the pedicle screw 2. Finally, bone cement is injected into the pedicle intramedullary nail 2, thus completing the whole implantation operation.
Fig. 4 is a schematic view of the installation of an artificial pedicle and pedicle intramedullary nail through a guide as per one embodiment of the utility model. As shown in fig. 4, the guide 5 includes a guide rail 52 and a guide cylinder 51 provided on the guide 5, and a T-shaped handle of the screwdriver 4 is also provided on the guide rail 2, and the guide cylinder 51 and the screwdriver 4 are movable along the guide rail 52. In the implantation process, firstly, a tool is inserted into the pedicle through the guide cylinder 51 for cutting, then the tool is held and the artificial pedicle is implanted into the cutting position through the guide cylinder 51, the screwdriver 4 can move along the guide rail 32 to determine the puncture position of the intramedullary nail 2, and after the puncture position is determined, the screwdriver 4 holds the pedicle intramedullary nail 2 to penetrate through the hollow hole 12 of the artificial pedicle 1, so that the installation and fixation of the pedicle intramedullary nail 2 are completed.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. The utility model provides an artifical pedicle of vertebral arch and vertebral arch intramedullary nail, its characterized in that, artifical pedicle of vertebral arch is cylindrical structure, the top of artifical pedicle of vertebral arch is implantation side, and the afterbody is for holding the side and be provided with the connecting hole that is connected with the holder, artifical pedicle of vertebral arch is provided with the cavity hole that vertically link up, artifical pedicle of vertebral arch implants the pedicle of vertebral arch after cutting through holding the instrument, makes the pedicle of vertebral arch keep in the extension state, the vertebral arch intramedullary nail passes the cavity hole in order to accomplish the location installation to the intramedullary nail of vertebral arch.
2. An artificial pedicle and arch intramedullary nail as in claim 1, wherein the artificial pedicle has a smaller diameter at the top than at the tail to facilitate implantation of the artificial pedicle.
3. An artificial pedicle and arch intramedullary nail as in claim 1, wherein the artificial pedicle is provided with anti-slip lines on the top and sides.
4. An artificial pedicle and arch intramedullary nail as in claim 1, wherein the walls of the artificial pedicle are porous and pre-filled with bone inducing material.
5. An artificial pedicle and arch intramedullary nail as in claim 1, wherein the artificial pedicle is made of bone fusion material.
6. An artificial pedicle and arch intramedullary nail as in claim 1 wherein the arch intramedullary nail is hollow for receiving a guide wire therethrough and the tail has a side opening for injection of bone cement.
7. An artificial pedicle and arch intramedullary nail as claimed in claim 1, wherein the arch intramedullary nail is of conical configuration with a smaller diameter forward shank and a larger diameter rearward shank.
8. The artificial pedicle and intramedullary nail of claim 1, wherein threads are provided on the outer surface of the intramedullary nail and in the hollow holes of the artificial pedicle, and the anterior threads of the intramedullary nail are cancellous threads and the posterior threads are cortical threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320329755.0U CN220370051U (en) | 2023-02-27 | 2023-02-27 | Artificial pedicle and intramedullary nail for vertebral arch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320329755.0U CN220370051U (en) | 2023-02-27 | 2023-02-27 | Artificial pedicle and intramedullary nail for vertebral arch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220370051U true CN220370051U (en) | 2024-01-23 |
Family
ID=89563688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320329755.0U Active CN220370051U (en) | 2023-02-27 | 2023-02-27 | Artificial pedicle and intramedullary nail for vertebral arch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220370051U (en) |
-
2023
- 2023-02-27 CN CN202320329755.0U patent/CN220370051U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11471203B2 (en) | Apparatus, system and method for fusion of bone | |
| US8951295B2 (en) | Posterior spinal fastener | |
| US12053216B2 (en) | Screw implants for bone fusion | |
| US10874445B2 (en) | Screw fixing apparatus | |
| US7959564B2 (en) | Pedicle seeker and retractor, and methods of use | |
| EP2726002B1 (en) | Bone screw fixation system | |
| EP2173268B1 (en) | Devices for stabilizing bone compatible for use with bone screws | |
| US8998923B2 (en) | Threaded bone filling material plunger | |
| US9687285B2 (en) | Fenestrated bone screws and methods of bone fastening and stabilization | |
| US20130072984A1 (en) | Fenestrated bone screws and methods of bone fastening and stabilization | |
| US20090163920A1 (en) | Facet fusion implant | |
| US20120323242A1 (en) | Surgical awl and method of using the same | |
| CN104334092A (en) | Fenestrated implant | |
| US11607256B1 (en) | Bone screw and method of using same | |
| US20120259365A1 (en) | Facet fusion implant, instrumentation, and surgical procedure | |
| CN220370051U (en) | Artificial pedicle and intramedullary nail for vertebral arch | |
| US20230190339A1 (en) | Device for the selective biological synthesis of a bone tissue | |
| US11589847B2 (en) | Fastening device for acquiring bone marrow aspirate | |
| CN217310540U (en) | Double-diameter spinal cortical bone trajectory screw | |
| CN219538466U (en) | Side-rear linkage spine minimally invasive puncture guiding system | |
| CN220988887U (en) | Bone grafting device for transpedicular trauma | |
| US11872140B2 (en) | Pedicle-based intradiscal fixation | |
| CN201558159U (en) | Axial fixing system for intervertebral bone implantation | |
| JP2023152972A (en) | Expandable bone core for pedicle screw fixation | |
| CN116898641A (en) | Assembly for intervertebral fusion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |