CN205866823U - Bone cement strenghthened type spongy bone location hollow screw - Google Patents
Bone cement strenghthened type spongy bone location hollow screw Download PDFInfo
- Publication number
- CN205866823U CN205866823U CN201620447732.XU CN201620447732U CN205866823U CN 205866823 U CN205866823 U CN 205866823U CN 201620447732 U CN201620447732 U CN 201620447732U CN 205866823 U CN205866823 U CN 205866823U
- Authority
- CN
- China
- Prior art keywords
- hollow screw
- bone cement
- bone
- screw
- ailhead
- 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
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Abstract
The utility model relates to a bone cement strenghthened type spongy bone location hollow screw, screw body is constituteed by pin fin, nail pole and the head of a nail to its structure, the axial pore that has filling bone cement to use is opened to the self -tapping screw head of pin fin for having the external screw thread in screw body the preceding tip of pin fin be equipped with with the undergauge hole section of axial pore axial intercommunication the lateral wall of pin fin open have with the volley hole that the axial pore is linked together. The utility model discloses can with bone cement volley to hollow screw's the pin fin outlying spongy bone in, treat bone cement curing after, with regard to the control power of multiplicable spongy bone to hollow screw, improve hollow screw's stability and fixed effect, reduce hollow screw's not hard up probability, effect, improvement treatment are fixed to the location of reduction of the fracture department to effective the improvement.
Description
Technical field
This utility model relates to a kind of orthopedic medical device, specifically a kind of bone cement reinforced spongy bone location sky
Heart screw.
Background technology
Fracture of femoral neck, fracture of femoral condyle, fracture of the tibial plateau and distal tibial fracture broadly fall into cancellous bone fracture, at present
Primary treatments clinically is to use reduction of the fracture inner fixed law to treat.Use the one that this Therapeutic Method uses
Fixture is exactly spongy bone hollow screw.Owing to mostly spongy bone hollow screw is that cross-under is fixed on the spongy bone within fracture site
Section, and the intensity of spongy bone is extremely low, it is impossible to provide sufficient hold for hollow screw, therefore, with hollow screw to fracture
After position is fixed on the positioning, loosening, shift and cutting out of hollow screw easily occurs, thus causes the treatment of Fracture internal fixaiion
Failure, adds misery and the financial burden of patient.
Utility model content
The purpose of this utility model is just to provide a kind of bone cement reinforced spongy bone location hollow screw, existing to solve
Hollow screw easily occurs loosening the problem causing fractures failed in spongy bone section.
This utility model is achieved in that a kind of bone cement reinforced spongy bone location hollow screw, by ailhead, nail rod
Form screw body with the head of a nail, be provided with the undergauge hole section axially connected with described axial channel in the leading section of described ailhead,
The sidewall of described ailhead has the discharge hole being connected with described axial channel.
The padding of closure undergauge hole section it is provided with at the front end reducing of described axial channel.
Having interior six square grooves on the described head of a nail, described interior six square grooves are connected with the rear end of described axial channel, for spiral shell
Nail carry and the most afterwards taking-up provide convenient.
This utility model, by changing the core bore form of hollow screw, is aided with closure and the ailhead discharge hole of core bore end
Open-minded, enable the bone cement of filling to enter in the spongy bone that ailhead is peripheral by discharge hole, after bone cement solidifies, so that it may
Increase the spongy bone hold to hollow screw, be greatly enhanced stability and the fixed effect of hollow screw, reduce hollow spiral shell
The loosening probability of nail, is effectively improved the location fixed effect at the reduction of the fracture, improves therapeutic effect, reduce patient misery and
Financial burden.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, the head of a nail, 2, interior six square grooves, 3, axial channel, 4, nail rod, 5, external screw thread, 6, discharge hole, 7, undergauge hole
Section, 8, self tapping point cutting edge, 9, padding, 10, ailhead.
Detailed description of the invention
As it is shown in figure 1, this utility model is formed screw body by ailhead 10, nail rod 4 and the head of a nail 1, screw body uses doctor
Make with metal material.Wherein, ailhead 10 is self tapping ailhead, and surface is with external screw thread 5；The front end of ailhead 10 is self tapping point cutting edge
8.Axial channel 3 is had, as the passage of filling bone cement in screw body.Have and axial hole in the leading section of ailhead 10
The undergauge hole section 7 that road 3 is connected, axial channel 3 is reducer with the connectivity part of undergauge hole section 7.Sidewall at ailhead 10 has
The some discharge holes 6 being connected with axial channel 3.Discharge hole is preferably formed with certain gradient, in order to bone cement is to ailhead periphery
The discharge of spongy bone.
Padding 9 it is provided with, in order to, before filling bone cement, to have blocked undergauge hole at the front end reducing of axial channel 3
Section 7, makes bone cement pass through discharge hole 6 and enters smoothly in spongy bone.
The head of a nail 1 has interior six square grooves 2, in order to use inner hexagon spanner to pull this hollow screw bone patient
Upper precession, also provides convenience for taking out this hollow screw the most afterwards.Interior six square grooves 2 are connected with the rear end of axial channel 3, and one is
Hollow screw can be made to insert access digit along guid needle, two be easy for bone cement install operation additional.
This utility model in use, the fracture site of the patient that first resets, then with guid needle penetrate fracture location at, so
After, the hollow screw of appropriate length it is screwed into along guid needle, after hollow screw puts in place, the axial channel 3 along hollow screw is put
Enter padding 9, in axial channel 3, then inject bone cement, push bone cement with special push rod so that it is by the discharge hole of ailhead
Discharge in 6, thus bone cement is injected in the spongy bone around ailhead.After bone cement solidifies, can strengthen hollow screw
Hold, by fracture site fixation.
Claims (1)
1. a bone cement reinforced spongy bone location hollow screw, is formed screw body, described nail by ailhead, nail rod and the head of a nail
Head is with externally threaded self tapping ailhead, has the axial channel of filling bone cement, it is characterized in that in screw body, described
The front end of ailhead is self tapping point cutting edge, is provided with the undergauge hole axially connected with described axial channel in the leading section of described ailhead
Section, is provided with the padding of closure undergauge hole section at the front end reducing of described axial channel, and the sidewall at described ailhead has
It is connected with described axial channel and there is the discharge hole of gradient；The described head of a nail has interior six square grooves, described interior six square grooves
It is connected with the rear end of described axial channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620447732.XU CN205866823U (en) | 2016-05-17 | 2016-05-17 | Bone cement strenghthened type spongy bone location hollow screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620447732.XU CN205866823U (en) | 2016-05-17 | 2016-05-17 | Bone cement strenghthened type spongy bone location hollow screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205866823U true CN205866823U (en) | 2017-01-11 |
Family
ID=57686821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620447732.XU Expired - Fee Related CN205866823U (en) | 2016-05-17 | 2016-05-17 | Bone cement strenghthened type spongy bone location hollow screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205866823U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107280756A (en) * | 2017-07-21 | 2017-10-24 | 西安康拓医疗技术有限公司 | A kind of medical cranial Bone nail structure |
| CN112935333A (en) * | 2021-01-27 | 2021-06-11 | 湖南申亿五金标准件有限公司 | Lightweight reticular hollow screw and production and processing device thereof |
-
2016
- 2016-05-17 CN CN201620447732.XU patent/CN205866823U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107280756A (en) * | 2017-07-21 | 2017-10-24 | 西安康拓医疗技术有限公司 | A kind of medical cranial Bone nail structure |
| CN112935333A (en) * | 2021-01-27 | 2021-06-11 | 湖南申亿五金标准件有限公司 | Lightweight reticular hollow screw and production and processing device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 Termination date: 20210517 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |