CN216455257U - Bone screw with chip removal function - Google Patents
Bone screw with chip removal function Download PDFInfo
- Publication number
- CN216455257U CN216455257U CN202122508538.1U CN202122508538U CN216455257U CN 216455257 U CN216455257 U CN 216455257U CN 202122508538 U CN202122508538 U CN 202122508538U CN 216455257 U CN216455257 U CN 216455257U
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- CN
- China
- Prior art keywords
- head
- bone screw
- chip
- bone
- chip removal
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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.)
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 30
- 238000010079 rubber tapping Methods 0.000 claims description 7
- 241001079814 Symphyotrichum pilosum Species 0.000 claims description 4
- 235000004224 Typha angustifolia Nutrition 0.000 claims description 4
- 208000010392 Bone Fractures Diseases 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 229910000531 Co alloy Inorganic materials 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
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model relates to the technical field of medical instruments, in particular to a bone screw with a chip removal function, which comprises a screw cap and a screw rod, wherein the screw rod comprises a rod part and a head part, the rod part is positioned between the screw cap and the head part, the head part is provided with external threads, and one end of the head part, which is close to the rod part, is provided with a chip removal groove.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a bone screw with a chip removal function.
Background
The bone screw is an internal fixing device for fixing the fracture part, is used alone or combined with a bone fracture plate, is made of metal materials, and mainly comprises pure titanium, titanium alloy, cobalt-based alloy, stainless steel and the like.
When the existing bone screw is screwed into a bone, bone chips generated cannot be discharged, and the internal stress of the bone is too large due to extrusion, so that the bone can crack.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: in order to solve the problem that bone fragments generated when a bone screw is screwed in the prior art cannot be discharged, the bone screw with the chip removal function is provided.
In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a bone screw with chip removal function, includes the nail cap and follows closely the pole, it includes pole portion and head to follow closely the pole, pole portion is located between nail cap and the head, the head is equipped with the external screw thread, the head is close to the chip groove has been opened to the one end of pole portion, the bone bits that produce when can be used to clear up bone screw nail and go into prevents to make the bone fracture too big because the bone bits extrusion causes bone internal stress.
Furthermore, the forming direction of the chip removing grooves is parallel to the axis of the head, and the number of the chip removing grooves is two.
Furthermore, one end of the head part, which is far away from the rod part, is provided with a self-tapping groove, so that the head part can directly tap without pre-punching, and the operation efficiency is improved.
Further, the number of the self-tapping grooves is three.
Further, the nail rod is of a hollow structure.
The utility model has the beneficial effects that: the end of the head part close to the rod part is provided with the chip removing groove which is used for cleaning bone chips generated when the bone screw is screwed into a bone, so that the bone is prevented from cracking due to overlarge internal stress of the bone caused by extrusion of the bone chips.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
Fig. 1 is a front view of a bone screw having a chip evacuation function;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 1;
in the figure: 1. a nail cap; 2. a nail rod; 2-1, a rod part; 2-2, head; 3. a chip removal groove; 4. and (4) self-tapping the groove.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1 to 3, the utility model relates to a bone screw with a chip removal function, which comprises a screw cap 1 and a screw rod 2, wherein the screw rod 2 comprises a rod part 2-1 and a head part 2-2, the rod part 2-1 is positioned between the screw cap 1 and the head part 2-2, the head part 2-2 is provided with an external thread, and one end of the head part 2-2, which is close to the rod part 2-1, is provided with a chip removal groove 3.
The chip removing grooves 3 are formed in a direction parallel to the axis of the head 2-2, and the number of the chip removing grooves 3 is two.
And a self-tapping groove 4 is formed in one end, far away from the rod part 2-1, of the head part 2-2. The number of the self-tapping grooves 4 is three.
The nail rod 2 is of a hollow structure.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (4)
1. A bone screw with a chip removal function is characterized in that: including nail cap (1) and nail pole (2), nail pole (2) are including pole portion (2-1) and head (2-2), pole portion (2-1) are located between nail cap (1) and head (2-2), head (2-2) are equipped with the external screw thread, head (2-2) are close to the one end of pole portion (2-1) is opened there is chip groove (3), head (2-2) are kept away from pole portion (2-1) one end is equipped with self tapping groove (4).
2. The bone screw with chip evacuation function of claim 1, wherein: the chip removing grooves (3) are arranged in a direction parallel to the axis of the head (2-2), and the number of the chip removing grooves (3) is two.
3. The bone screw with chip evacuation function of claim 1, wherein: the number of the self-tapping grooves (4) is three.
4. The bone screw with chip evacuation function of claim 1, wherein: the nail rod (2) is of a hollow structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122508538.1U CN216455257U (en) | 2021-10-18 | 2021-10-18 | Bone screw with chip removal function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122508538.1U CN216455257U (en) | 2021-10-18 | 2021-10-18 | Bone screw with chip removal function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216455257U true CN216455257U (en) | 2022-05-10 |
Family
ID=81439751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122508538.1U Active CN216455257U (en) | 2021-10-18 | 2021-10-18 | Bone screw with chip removal function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216455257U (en) |
-
2021
- 2021-10-18 CN CN202122508538.1U patent/CN216455257U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |