CN108175495B - Bone screw and bone plate assembly with same - Google Patents
Bone screw and bone plate assembly with same Download PDFInfo
- Publication number
- CN108175495B CN108175495B CN201810196423.3A CN201810196423A CN108175495B CN 108175495 B CN108175495 B CN 108175495B CN 201810196423 A CN201810196423 A CN 201810196423A CN 108175495 B CN108175495 B CN 108175495B
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- China
- Prior art keywords
- bone plate
- bone
- shaped
- holes
- plate assembly
- Prior art date
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Links
- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 116
- 238000003780 insertion Methods 0.000 claims abstract description 10
- 230000037431 insertion Effects 0.000 claims abstract description 10
- 208000010392 Bone Fractures Diseases 0.000 abstract description 35
- 230000035876 healing Effects 0.000 abstract description 5
- 230000000149 penetrating effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 206010017076 Fracture Diseases 0.000 description 17
- 238000004891 communication Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009940 knitting Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012567 medical material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
- A61B17/8057—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/808—Instruments for holding or positioning bone plates, or for adjusting screw-to-plate locking mechanisms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone
Abstract
The invention discloses a bone screw, which comprises a head part (1) and a rod part (2), wherein an anti-drop structure (3) for preventing the screw from dropping out of a bone is arranged at the insertion end of the rod part (2), the anti-drop structure (3) comprises a kidney-shaped anti-drop part (301) connected with the insertion end of the rod part (2), and a conical pointed head (302) is arranged below the kidney-shaped anti-drop part (301). The bone screw can effectively prevent the bone plate from falling off. The invention also provides a bone plate assembly, which comprises a bone plate (4), wherein a plurality of through holes (5) are formed in the bone plate (4), the through holes (5) are kidney-shaped through holes, the screws are detachably arranged in the through holes (5) in a penetrating manner, and the bone plate (4) can be L-shaped or hairpin-shaped. The bone fracture plate component is convenient to use, stable in connection and beneficial to bone healing.
Description
Technical Field
The invention relates to the technical field of medical materials, in particular to a screw for bone fracture and a bone fracture plate assembly with the screw.
Background
The bone fracture plate is a perforated plate-shaped fracture internal fixing device, is used together with bone screws or bone wires in clinic, and is mainly divided into a common bone fracture plate and a pressurized bone fracture plate. Currently, bone plates are an indispensable fixture in bone-setting surgery.
The existing bone fracture plate is usually fixed at the fracture position by means of screws, and along with the extension of time, the screws and bones are easy to loosen, so that the connection between the bone fracture plate and the fracture position is unstable, and even the bone fracture plate falls off. In addition, the existing bone fracture plate is usually fixed with the fracture position only by means of screws, and the pressure applied to the fracture position is limited, so that the stable connection of the bone fracture plate is not facilitated, and the healing of the fracture position is also not facilitated.
Therefore, development of a novel screw and bone plate is needed to improve the connection stability between the bone plate and the fracture, avoid the bone plate from falling off, and promote the fracture healing.
Disclosure of Invention
The invention aims to provide a bone screw which can effectively prevent a bone plate from falling off.
Another object of the present invention is to provide a bone plate assembly that is easy to use, stable in connection and beneficial to bone healing.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the utility model provides a bone screw, includes head and pole portion, the insertion end of pole portion is equipped with the anticreep structure that is used for preventing the screw from deviating from in the bone, the anticreep structure includes the waist shape anticreep portion of being connected with the insertion end of pole portion, the below of waist shape anticreep portion is equipped with the toper pointed end.
Preferably, a cutting edge is arranged on the periphery of the upper part of the waist-shaped anti-drop part.
The bone plate assembly comprises a bone plate, wherein a plurality of through holes are formed in the bone plate, the through holes are kidney-shaped through holes, and the bone screw is detachably arranged in the through holes in a penetrating mode.
Preferably, the bone fracture plate is L-shaped, and a plurality of through holes are formed on two sides of the L-shaped bone fracture plate.
Preferably, the bone plate is in a hairpin shape and comprises a bone plate body, a plurality of through holes are formed in the bone plate body, and a plurality of arc-shaped encircling arms are arranged on two sides of the bone plate body.
Preferably, a bayonet for inserting the fork-type pry bar is arranged on one side of the arc-shaped encircling arm.
More preferably, a plurality of saw teeth are arranged on one side of the arc-shaped encircling arm, which is opposite to the bayonet, and the saw teeth are obliquely arranged towards the inner side of the arc-shaped encircling arm.
More preferably, the included angle between the saw teeth and the arc-shaped encircling arm is 40-60 degrees.
Preferably, two sides of the middle part of the bone fracture plate body are symmetrically provided with T-shaped encircling arms respectively.
More preferably, a plurality of arc embracing arms are symmetrically arranged relative to the T-shaped embracing arms on the same side.
Compared with the prior art, the invention has the advantages that: according to the bone-knitting screw, the waist-shaped anti-drop part is arranged at the insertion end of the rod part, and the conical pointed end is arranged below the waist-shaped anti-drop part, so that when the bone-knitting screw is used, the screw is firstly nailed into a bone and then rotated for a certain angle, and the waist-shaped anti-drop part is locked in the bone.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a bone screw according to the present invention.
Fig. 2 is a schematic front view of the bone screw of the present invention.
Fig. 3 is a schematic view of a bone plate in the bone plate assembly of embodiment 2 of the present invention.
Fig. 4 is a schematic view of a bone plate assembly according to embodiment 2 of the present invention.
Fig. 5 is a schematic view of an L-shaped bone plate in the bone plate assembly of embodiment 3 of the present invention.
Fig. 6 is a schematic view of a hairpin bone plate of the bone plate assembly of embodiment 4 of the invention.
Fig. 7 is a schematic elevational view of a bone plate assembly according to embodiment 4 of the present invention.
Legend description:
1. a head; 2. a stem portion; 3. an anti-falling structure; 4. a bone plate; 5. a through hole; 301. waist-shaped anti-drop part; 302. a conical tip; 303. a cutting edge; 401. a bone plate body; 402. an arc-shaped encircling arm; 4021. a bayonet; 4022. saw teeth; 403. the arms are surrounded by T-shaped arms.
Detailed Description
The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown, for the purpose of illustrating the invention, but the scope of the invention is not limited to the specific embodiments shown.
It will be understood that when an element is referred to as being "fixed, affixed, connected, or in communication with" another element, it can be directly fixed, affixed, connected, or in communication with the other element or intervening elements may be present.
Unless defined otherwise, all technical and scientific terms used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the scope of the present invention.
Example 1:
as shown in fig. 1 and 2, a bone screw according to the present invention includes a head portion 1 and a shaft portion 2. Wherein, an anti-falling structure 3 is arranged at the insertion end of the rod part 2 and is used for preventing the screw from falling out of the bone. The drop-preventing structure 3 includes a waist-shaped drop-preventing portion 301 connected to the insertion end of the shaft portion 2, and a tapered tip 302 is provided below the waist-shaped drop-preventing portion 301. Through setting up waist shape anticreep portion 301 at the insertion end of pole portion 2, set up toper pointed end 302 in waist shape anticreep portion 301's below, during the use, earlier with the screw nail in the bone, rotate certain angle again, waist shape anticreep portion 301 is locked promptly in the bone, and bone fracture plate and fracture department adopt this kind of screw to connect, can greatly increase the stability of connection, effectively solved the problem that leads to the bone fracture plate to drop because the screw is not hard up.
In this embodiment, a cutting edge 303 is provided at the upper outer periphery of the kidney-shaped drop-off prevention portion 301, and the cutting edge 303 is provided around the kidney-shaped drop-off prevention portion 301. By providing the cutting edge 303 on the kidney-shaped drop-preventing portion 301, rotation of the kidney-shaped drop-preventing portion 301 in the bone is facilitated.
Example 2:
as shown in fig. 3 and 4, a bone plate assembly according to the present invention includes a bone plate 4, wherein a plurality of through holes 5 are formed in the bone plate 4, the through holes 5 are kidney-shaped through holes, and screws for bone setting according to embodiment 1 are inserted into the through holes 5. The bone screw is detachably installed in the through hole 5 in a penetrating way. The bone plate 4 in this embodiment is elongate.
When the bone plate assembly is used, the bone plate 4 is attached to a fracture part, screws penetrate through the through holes 5 and are nailed into bones, then the screws are rotated by a certain angle, the kidney-shaped anti-drop part 301 is clamped in the bones, and a plurality of screws are sequentially fixed, so that the installation of the bone plate assembly is completed.
Example 3:
as shown in fig. 5, the bone plate assembly of the present invention comprises a bone plate 4, wherein the bone plate 4 is in an L shape, and a plurality of through holes 5 are formed on two sides of the L-shaped bone plate 4. The through hole 5 is a kidney-shaped through hole, and the bone screw according to example 1 is inserted into the through hole 5. The bone screw is detachably installed in the through hole 5 in a penetrating way.
The method of use of the bone plate assembly is similar to that of embodiment 2. In the bone plate assembly, the bone plate 4 is L-shaped, and screws can be nailed into bones from two directions, so that the connection stability of the bone plate assembly is further improved compared with the long-strip bone plate 4 in the embodiment 2.
Example 4:
as shown in fig. 6 and 7, the bone plate assembly of the present invention comprises a bone plate 4, wherein the bone plate 4 is in a hairpin shape, and comprises a bone plate body 401, a plurality of through holes 5 are formed in the bone plate body 401, the through holes 5 are kidney-shaped through holes, and bone screws as in embodiment 1 are inserted into the through holes 5. The bone screw is detachably installed in the through hole 5 in a penetrating way. A plurality of arc-shaped encircling arms 402 are arranged on two sides of the bone plate body 401. The bone plate 4 is provided with a hairpin shape, and the fracture is clamped by the plurality of arc-shaped encircling arms 402, so that the connection stability of the bone plate and the fracture is further improved.
In this embodiment, a bayonet 4021 is provided on one side of the arc-shaped encircling arm 402. The bayonet 4021 is arranged on the arc-shaped encircling arm 402, so that a fork-type pry bar can be conveniently inserted to prop the arc-shaped encircling arm 402 open, and the bone plate 4 is dismounted at the fracture position. A plurality of saw teeth 4022 are arranged on one side, opposite to the bayonet 4021, of the arc-shaped encircling arm 402, and the saw teeth 4022 are obliquely arranged towards the inner side of the arc-shaped encircling arm 402. The serrations 4022 actively and continuously produce longitudinal compression, facilitate healing of the fracture, reduce the occurrence of bone discontinuities, and increase the torsional capacity of the bone plate 4. Preferably, the angle between the serrations 4022 and the arcuate encircling arms 402 is 40 ° to 60 °.
In this embodiment, two sides of the middle part of the bone plate body 401 are symmetrically provided with a T-shaped encircling arm 403 respectively, and the T-shaped encircling arm 403 and the tension side main ribs form three longitudinal positioning surfaces which are uniformly distributed by more than 120 degrees, so that the bone fracture surface is positioned conveniently, and the stability and the accuracy of the bone fracture end are ensured. The plurality of arcuate embracing arms 402 in the bone plate 4 are symmetrically disposed about the same side of the T-shaped embracing arm 403.
When the bone plate assembly is used, the fork-shaped crow bar is inserted into the bayonet 4021 firstly to prop open the arc-shaped encircling arms 402, the bone plate 4 is clamped at the fracture position, the T-shaped encircling arms 403 are aligned with the middle position of the fracture, the plurality of arc-shaped encircling arms 402 clamp two sides of the fracture end, the plurality of saw teeth 4022 apply longitudinal pressure to the bone, the screw penetrates through the through hole 5 to be nailed into the bone, then the screw is rotated by a certain angle, the kidney-shaped anti-falling part 301 is clamped in the bone, and the plurality of screws are sequentially fixed, so that the installation of the bone plate assembly is completed.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a screw for coaptation, includes head (1) and pole portion (2), its characterized in that, the insertion end of pole portion (2) is equipped with anticreep structure (3) that are used for preventing the screw from deviating from in the bone, anticreep structure (3) include waist shape anticreep portion (301) that are connected with the insertion end of pole portion (2), the below of waist shape anticreep portion (301) is equipped with toper pointed end (302), the upper portion periphery of waist shape anticreep portion (301) is equipped with blade (303).
2. A bone plate assembly, comprising a bone plate (4), wherein a plurality of through holes (5) are formed in the bone plate (4), the through holes (5) are kidney-shaped through holes, and the bone screw according to claim 1 is detachably arranged in the through holes (5).
3. Bone plate assembly according to claim 2, characterized in that the bone plate (4) is "L" -shaped, with a plurality of through holes (5) being provided on both sides of the "L" -shaped bone plate (4).
4. The bone plate assembly according to claim 2, wherein the bone plate (4) is in a hairpin shape and comprises a bone plate body (401), a plurality of through holes (5) are formed in the bone plate body (401), and a plurality of arc-shaped encircling arms (402) are arranged on two sides of the bone plate body (401).
5. The bone plate assembly of claim 4, wherein one side of the arcuate embracing arm (402) is provided with a bayonet (4021) into which a forked crowbar is inserted.
6. The bone plate assembly of claim 5, wherein a plurality of serrations (4022) are provided on a side of the arcuate embracing arm (402) opposite the bayonet (4021), the serrations (4022) being disposed obliquely toward an inner side of the arcuate embracing arm (402).
7. The bone plate assembly of claim 6, wherein the angle between the serrations (4022) and the arcuate encircling arms (402) is 40 ° to 60 °.
8. The bone plate assembly of any one of claims 4-7, wherein a T-shaped encircling arm (403) is symmetrically disposed on each side of the middle portion of the bone plate body (401).
9. The bone plate assembly of claim 8, wherein a plurality of the arcuate embracing arms (402) are symmetrically disposed with respect to the same side of the T-shaped embracing arms (403).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810196423.3A CN108175495B (en) | 2018-03-09 | 2018-03-09 | Bone screw and bone plate assembly with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810196423.3A CN108175495B (en) | 2018-03-09 | 2018-03-09 | Bone screw and bone plate assembly with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108175495A CN108175495A (en) | 2018-06-19 |
| CN108175495B true CN108175495B (en) | 2024-03-26 |
Family
ID=62553419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810196423.3A Active CN108175495B (en) | 2018-03-09 | 2018-03-09 | Bone screw and bone plate assembly with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108175495B (en) |
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| US5334204A (en) * | 1992-08-03 | 1994-08-02 | Ace Medical Company | Fixation screw |
| EP1433426A1 (en) * | 2002-12-24 | 2004-06-30 | JB Spine Instruments, S.l. | Posterior vertebral body fastening device in the lumbar region |
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| CN108175495A (en) | 2018-06-19 |
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