CN212490100U - Bone fragment nail - Google Patents
Bone fragment nail Download PDFInfo
- Publication number
- CN212490100U CN212490100U CN202021041246.0U CN202021041246U CN212490100U CN 212490100 U CN212490100 U CN 212490100U CN 202021041246 U CN202021041246 U CN 202021041246U CN 212490100 U CN212490100 U CN 212490100U
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- CN
- China
- Prior art keywords
- rod
- section
- nail
- exerting pressure
- nail pole
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- 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
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Abstract
The utility model relates to an orthopedics medical instrument technical field especially relates to a bone fragment nail, including the nail pole, the body of rod of nail pole is solid cylinder, the body of rod of nail pole divide into the section of exerting pressure body of rod and the centre gripping section body of rod, and the front end of the section of exerting pressure body of rod is equipped with the self tapping cutting edge, and the diameter of the section of exerting pressure body of rod is by its lower supreme grow gradually and be not more than 3mm, is equipped with the screw thread on the lateral wall of the section of exerting. The thread on the side wall of the rod body of the pressure applying section is divided into two sections, wherein one section extends upwards from the lower end of the rod body, and the other section extends downwards from the upper end of the rod body. The utility model has the advantages of, this bone piece nail is used for fixed ossicle piece, and the diameter of the section of exerting pressure body of rod is the gradual change formula, along with during the nail pole bores into the skeleton, the section of exerting pressure body of rod can pressurize the bone fold piece, and the lateral wall design screw thread of the section of exerting pressure body of rod is difficult for taking place the aversion after the nail pole bores into the skeleton.
Description
Technical Field
The utility model relates to the technical field of orthopedic medical equipment, in particular to a bone fragment nail.
Background
In clinical orthopedics, instruments for fixing bones comprise screws, kirschner wires and the like, wherein the screws are widely used, but the screws have larger diameters and are suitable for fixing large bones, and the kirschner wires cannot be used when the fracture injury is small or the volume of the fracture part is small, but the kirschner wires have the general diameter of 0.5-2mm and can be suitable for the situations, but the kirschner wires have smooth side walls and weaker pressurizing effect, and are easy to displace after being fixed, so that the fixation is failed or important soft tissues such as nerve vessels and the like are damaged.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a bone fragment nail to existing technical situation for fixed ossicle piece.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a bone fragment nail, includes the nail pole, and the body of rod of nail pole is solid cylinder, the body of rod of nail pole divide into the section body of rod and the centre gripping section body of rod of exerting pressure, and the front end of the section body of rod of exerting pressure is equipped with the self tapping cutting edge, and the diameter of the section body of rod of exerting pressure is supreme grow gradually and be not more than 3mm by it down, is equipped with the screw thread on the lateral wall of the section body.
Furthermore, the thread on the side wall of the rod body of the pressure applying section is divided into two sections, wherein one section extends upwards from the lower end of the pressure applying section, and the other section extends downwards from the upper end of the pressure applying section.
The utility model has the advantages that:
this bone fragment nail is used for fixed ossicle piece, and the diameter of the section of exerting pressure body of rod is the gradual change formula, and along with during the nail pole bores into the skeleton, the section of exerting pressure body of rod can pressurize the fracture piece, and the lateral wall design screw thread of the section of exerting pressure body of rod, the difficult emergence of nail pole bore into the skeleton after the displacement.
Drawings
Fig. 1 is a schematic structural view of the nail rod of the present invention.
Description of the labeling: 1. self tapping blade, 2, the section body of rod of exerting pressure, 3, the centre gripping section body of rod.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1, a bone fragment nail comprises a nail rod, the rod body of the nail rod is a solid cylinder, and the rod body of the nail rod is divided into a pressure applying section rod body 2 and a clamping section rod body 3. The front end of the pressure applying section rod body 2 is provided with a self-tapping blade 1, the design of the self-tapping blade is the same as that of a Kirschner wire, the tail end of the nail rod is fixed on an electric drill, and the nail rod can be directly drilled into a bone. The diameter of the pressure section rod body 2 is gradually enlarged from bottom to top and is not more than 3mm, the diameter of the pressure section rod body 2 is smaller, the pressure section rod body is suitable for fixing ossicle slices, the diameter of the pressure section rod body 2 is gradually enlarged from bottom to top, and in the process of drilling into the bone, the pressure section rod body 2 has a pressurizing effect on the ossicle slices which are drilled into the pressure section rod body firstly.
The side wall of the pressure section rod body 2 is provided with threads, and the threads are designed to ensure that the pressure section rod body 2 has a pressure effect superior to that of a Kirschner wire and the nail rod is not easy to displace after being drilled into a bone. Preferably, the thread on the side wall of the pressing section rod body 2 is divided into two sections, wherein one section extends upwards from the lower end of the pressing section rod body, the other section extends downwards from the upper end of the pressing section rod body, and the sectional type thread simplifies the processing and manufacturing procedures.
In one embodiment, the diameter of the lower end of the pressure applying section rod body 2 is 1.5mm, the diameter of the upper end of the pressure applying section rod body 2 is 2mm, the length of the pressure applying section rod body 2 is 3-4cm, and the total length of the bone fragment nail is 12 cm.
In another embodiment, the diameter of the lower end of the pressure applying section rod body 2 is 2mm, the diameter of the upper end of the pressure applying section rod body 2 is 2.5mm, the length of the pressure applying section rod body 2 is 3-4cm or 5-6cm, and the total length of the bone fragment nail is 12 cm.
The diameter and length of the pressing section rod body 2 are determined and selected according to the volume and size of the bone fragments.
Specifically, the process of adopting the bone fragment nail to carry out the ossicle fragment fixing operation comprises the following steps: the tail end of the bone fragment nail is fixed on an electric drill, the pressure applying section rod body 2 continuously drills into the bone along with the rotation of the electric drill, the small bone fragments are completely fixed under the pressure applying action, then the electric drill is taken down, and the part of the bone fragment nail, which is exposed out of the bone surface, is cut off or bent from the lower end of the clamping section rod body 3.
The utility model has the advantages of, this bone fragment nail is used for fixed ossicle piece, and the diameter of the section of exerting pressure body of rod 2 is the gradual change formula, along with during the nail pole bores into the skeleton, the section of exerting pressure body of rod 2 can pressurize the bone fold piece, and the lateral wall design screw thread of the section of exerting pressure body of rod 2 is difficult for taking place the aversion after the nail pole bores into the skeleton.
Of course, the above is only the preferred embodiment of the present invention, and the application range of the present invention is not limited thereto, so all the equivalent changes made in the principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A bone fragment nail which is characterized in that: including the nail pole, the body of rod of nail pole is solid cylinder, the body of rod of nail pole divide into the section body of rod and the centre gripping section body of rod of exerting pressure, and the front end of the section body of rod of exerting pressure is equipped with the self tapping cutting edge, and the diameter of the section body of rod of exerting pressure is supreme grow gradually and be not more than 3mm by it down, is equipped with the screw thread on the lateral wall of the section body of rod of exerting.
2. The bone fragment pin as claimed in claim 1, wherein: the thread on the side wall of the rod body of the pressure applying section is divided into two sections, wherein one section extends upwards from the lower end of the rod body, and the other section extends downwards from the upper end of the rod body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021041246.0U CN212490100U (en) | 2020-06-08 | 2020-06-08 | Bone fragment nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021041246.0U CN212490100U (en) | 2020-06-08 | 2020-06-08 | Bone fragment nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212490100U true CN212490100U (en) | 2021-02-09 |
Family
ID=74394749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021041246.0U Expired - Fee Related CN212490100U (en) | 2020-06-08 | 2020-06-08 | Bone fragment nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212490100U (en) |
-
2020
- 2020-06-08 CN CN202021041246.0U patent/CN212490100U/en not_active Expired - Fee Related
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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: 20210209 Termination date: 20210608 |