CN208017566U - A kind of femoral neck bone hollow nail - Google Patents
A kind of femoral neck bone hollow nail Download PDFInfo
- Publication number
- CN208017566U CN208017566U CN201720750602.8U CN201720750602U CN208017566U CN 208017566 U CN208017566 U CN 208017566U CN 201720750602 U CN201720750602 U CN 201720750602U CN 208017566 U CN208017566 U CN 208017566U
- Authority
- CN
- China
- Prior art keywords
- rivet nut
- nail
- gripping mechanism
- head
- femoral neck
- 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
Links
Abstract
The utility model discloses a kind of femoral neck bone hollow nails, including rivet nut, the top of rivet nut is provided with the head of a nail, internal thread is provided on the inside of the head of a nail, fine thread is set to rivet nut apical lateral, the top of the head of a nail is provided with U-lag, gripping mechanism includes clamping bulb, the side of clamping bulb is provided with connecting rod, protrusion is provided in connecting rod, raised side is provided with spring, and the side of spring is provided with gripping mechanism and keeps out end, rivet nut is internally provided with internal strengthening core, and coarse-pitch thread is provided on the outside of rivet nut.The utility model in rivet nut by being provided with gripping mechanism, the healing of fracture face is close after not only screwing in, and after being inserted into internal strengthening core, clamping bulb is expanded slightly outward, the incidence that rivet nut loosens even abjection can be reduced, rivet nut can improve the intensity of the hollow nail because being internally provided with internal strengthening core simultaneously, lead to the risk of operative failure because the hollow nail of implantation is broken to effectively reduce.
Description
Technical field
The utility model is related to orthopaedics medical instruments field, more particularly to a kind of femoral neck bone hollow nail.
Background technology
With China human mortality aging, femoral neck fracture in elders incidence be continuously improved, due to senile osteoporosis with
And femoral neck bone ischaemic, it is easy to happen bone nonunion and caput femoris necrosis, therefore to have become Gerontological Research Center important for the fracture
Project, it is fixed in the lower emergency treatment row double end pressurizing hollow screw of C-arm perspective with the improvement of surgical condition and the accumulation of operation skill
The advantages such as art is short with its operating time, wound is small, the hospital stays is short, expense is low become basic hospital and the first choice of patient, existing
Hollow nail to be one end have screw thread or both ends to have a screw thread, but since to there is lifting solid for clinically used hollow screw at present
Determine insufficient strength, often results in postoperative fracture displacement, screw loosening abjection, final fixed failure, particularly with clinical common old
Year fracture of neck of femur, since most of patients is there are osteoporosis, common hollow nail is difficult to reach anti-rotation, the mesh of anti-slide
, therefore often there is the phenomenon that internal fixation hollow nail loosens abjection, and due to being hollow structure, integral strength inside hollow nail
Small, hollow design tends to that hollow nail is caused to be broken, and so as to cause the displacement fracture resetted, eventually leads to operation and loses
It loses.
Utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies of existing technologies, and it is hollow to provide a kind of femoral neck bone
It follows closely, the healing of fracture face is close after screw-in, can reduce the incidence of rivet nut loosening or even abjection, and intensity is high, is not susceptible to be broken,
Lead to the risk of operative failure because the hollow nail of implantation is broken to effectively reduce.
In order to solve the above-mentioned technical problem, the utility model provides the following technical solution：
The top of a kind of femoral neck bone hollow nail of the utility model, including rivet nut, the rivet nut is provided with the head of a nail, the nail
Internal thread is provided on the inside of cap, the side of the internal thread is provided with fine thread, and the top middle portion of the head of a nail is provided with U-shaped
Slot is provided with gripping mechanism in the rivet nut, and the gripping mechanism includes clamping bulb, and the side of the clamping bulb is provided with
Connecting rod, the connecting rod are fixedly connected with clamping bulb, protrusion are provided in the connecting rod, the protrusion is close to clamping ball
The side of head, the protrusion is provided with spring, and the side of the spring is provided with gripping mechanism and keeps out end, and the gripping mechanism supports
Gear end is last point of rivet nut, and between protrusion and gripping mechanism keep out end, the rivet nut is internally provided with the spring
Internal strengthening core is provided with coarse-pitch thread on the outer circle side of the rivet nut bottom end.
As a kind of optimal technical scheme of the utility model, the fine thread is set to rivet nut apical lateral.
As a kind of optimal technical scheme of the utility model, the spring socket-connects with connecting rod.
As a kind of optimal technical scheme of the utility model, the internal strengthening core socket-connects with rivet nut.
As a kind of optimal technical scheme of the utility model, the rivet nut is connected with the head of a nail by fine thread and internal thread
It connects.
As a kind of optimal technical scheme of the utility model, the rivet nut is made by Ti-6Al-V materials.
Compared with prior art, the beneficial effects of the utility model are as follows：
For the utility model by being provided with gripping mechanism in rivet nut, the healing of fracture face is close after not only screwing in, but also inserts
After entering internal strengthening core, clamping bulb is expanded slightly outward, can reduce the incidence that rivet nut loosens even abjection, while rivet nut
The intensity of the hollow nail can be improved because being internally provided with internal strengthening core, is not susceptible to be broken, to effectively reduce because of implantation
Hollow nail fracture and lead to the risk of operative failure.
Description of the drawings
Attached drawing is used to provide a further understanding of the present invention, and a part for constitution instruction, with this practicality
Novel embodiment for explaining the utility model, does not constitute limitations of the present invention together.In the accompanying drawings：
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is structural schematic diagram when this practicality is not inserted into internal strengthening core；
Fig. 3 is one of partial structural diagram of the utility model；
Fig. 4 is the two of the partial structural diagram of the utility model；
Fig. 5 is the transverse sectional view of the utility model rivet nut；
In figure：1, rivet nut；2, the head of a nail；3, internal strengthening core；4, coarse-pitch thread；5, gripping mechanism；51, clamping bulb；52, even
Extension bar；53, spring；54, raised；6, gripping mechanism keeps out end；7, U-lag；8, internal thread；9, fine thread.
Specific implementation mode
The preferred embodiment of the utility model is illustrated below in conjunction with attached drawing, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
Embodiment 1
As shown in Figs. 1-5, the utility model provides a kind of femoral neck bone hollow nail, including rivet nut 1, the top of rivet nut 1 are set
It is equipped with the head of a nail 2, the inside of the head of a nail 2 is provided with internal thread 8, and fine thread 9 is set to 1 apical lateral of rivet nut, fine thread 9 and internal thread
Both 8 can be connected with spiral, and the top middle portion of the head of a nail 2 is provided with U-lag 7, and there are three gripping mechanism 5, clampings for setting in rivet nut 1
Device 5 is placed in the hole being provided in rivet nut 1（It is not indicated in figure）Interior, the axis in hole is parallel with top cap 2, with the longitudinal direction between top cap 2
Distance is four point one of rivet nut entire length, and gripping mechanism 5 includes clamping bulb 51, and the side of clamping bulb 51 is provided with connection
Bar 52, connecting rod 52 are fixedly connected with clamping bulb 51, protrusion 54 are provided in connecting rod 52, protrusion 54 is close to clamping bulb
51, the side of protrusion 54 is provided with spring 53, and the side of spring 53 is provided with gripping mechanism and keeps out end 6, and gripping mechanism keeps out end 6
For 1 last point of rivet nut, spring 53 is located at protrusion 54 and gripping mechanism is kept out between holding 6, and rivet nut 1 is internally provided with internal add
Strong core 3 is provided with coarse-pitch thread 4 on the outer circle side of 1 bottom end of rivet nut.
Further, fine thread 9 is set to 1 apical lateral of rivet nut, and screw pitch is smaller compared with coarse-pitch thread 4, is being followed closely with setting
8 phase of internal thread of 2 inside of cap screws.
Spring 53 socket-connects with connecting rod 52, and spring 53 is socketed in connecting rod 52, is supported positioned at protrusion 54 and gripping mechanism
It keeps off between end 6, connecting rod 52 has certain chamfering close to the outer circle side of one end of internal strengthening core 3 with end face, facilitates internal add
Strong core 3 is inserted into rivet nut 1.
Internal strengthening core 3 socket-connects with rivet nut 1, and internal strengthening core 3 and 1 clearance fit of rivet nut are internally provided in three
The top surface of portion's strengthening core 3, three internal strengthening cores 3 is wanted to be bonded with top cap 2, three internal strengthening cores 3 on cross section
Center constitutes an equilateral triangle, and barycenter oftriangle and the center of circle of rivet nut 1 coincide, thus can and raising it is hollow
The intensity of nail makes it be not susceptible to be broken, and 3 bottom end of internal strengthening core is provided with chamfering, it is facilitated to be inserted into rivet nut 1.
Rivet nut 1 is connect with the head of a nail 2 by fine thread 9 and internal thread 8, and the installation of internal strengthening core 3 is convenient for.
Rivet nut 1 is made by Ti-6Al-4V materials, Al content 5.5%-6.75% in Ti-6Al-4V, V content 3.5%-
4.5%, surplus Ti, toughness, formability are good, are a kind of excellent materials for making hollow nail rivet nut 1.
Specifically, including rivet nut 1, the top of rivet nut 1 is provided with the head of a nail 2, and the inside of the head of a nail 2 is provided with internal thread 8, interior spiral shell
The side of line 8 is provided with fine thread 9, and rivet nut 1 is connect with the head of a nail 2 by fine thread 9 and internal thread 8, and the top of the head of a nail 2 is provided with
U-lag 7, U-lag 7 are used for the dismounting of hollow nail, are provided with gripping mechanism 5 in rivet nut 1, gripping mechanism 5 include clamping bulb 51,
Connecting rod 52 and spring 53, when internal strengthening core 3 is not inserted into rivet nut 1, gripping mechanism 5 is completely disposed on 1 side wall of rivet nut
Kong Zhong, when internal strengthening core 3 is inserted into rivet nut 1, gripping mechanism 5 makes 51 quilt of clamping bulb due to being oppressed by radial load
It is radial to release, with shin bone to contacting, the incidence that rivet nut 1 loosens even abjection can be reduced, protrusion is provided in connecting rod 52
54, the side of spring 53 is provided with gripping mechanism and keeps out end 6, and protrusion 54 and gripping mechanism keep out the 6 pairs of spring retainers in end, when installation
Rivet nut 1 is screwed at the femur connected into needs with tool first, then internal strengthening core 3 is inserted into inside rivet nut 1, is twisted later
Cap 2 is pressed closer, disassembly process is opposite with installation process.
The utility model in rivet nut 1 by being provided with gripping mechanism 5, and the healing of fracture face is close after not only screwing in, but also
After being inserted into internal strengthening core 3, the pico- expansion outward of clamping bulb 51 can reduce the incidence that rivet nut 1 loosens even abjection, together
When rivet nut 1 can improve the intensity of the hollow nail because being internally provided with internal strengthening core 3, be not susceptible to be broken, to effectively subtracting
It is small to lead to the risk of operative failure because the hollow nail of implantation is broken.
Finally it should be noted that：The above descriptions are merely preferred embodiments of the present invention, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it still can be with technical scheme described in the above embodiments is modified, or to which part technical characteristic
Carry out equivalent replacement.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of femoral neck bone hollow nail, including rivet nut（1）, which is characterized in that the rivet nut（1）Top be provided with the head of a nail
（2）, the head of a nail（2）Inside be provided with internal thread（8）, fine thread（9）It is set to rivet nut（1）Apical lateral, the head of a nail
（2）Top middle portion be provided with U-lag（7）, the rivet nut（1）On be provided with gripping mechanism（5）, the gripping mechanism（5）Packet
Include clamping bulb（51）, the clamping bulb（51）Side be provided with connecting rod（52）, the connecting rod（52）With clamping ball
Head（51）It is fixedly connected, the connecting rod（52）On be provided with protrusion（54）, the protrusion（54）Close to clamping bulb（51）, institute
State protrusion（54）Side be provided with spring（53）, the spring（53）Side be provided with gripping mechanism and keep out end（6）, described
Gripping mechanism keeps out end（6）For rivet nut（1）Last point, the spring（53）Positioned at protrusion（54）End is kept out with gripping mechanism
（6）Between, the rivet nut（1）Be internally provided with internal strengthening core（3）, the rivet nut（1）It is arranged on the outer circle side of bottom end
There is coarse-pitch thread（4）.
2. a kind of femoral neck bone hollow nail according to claim 1, which is characterized in that the fine thread（9）It is set to nail
Body（1）Apical lateral.
3. a kind of femoral neck bone hollow nail according to claim 1, which is characterized in that the spring（53）With connecting rod
（52）It socket-connects.
4. a kind of femoral neck bone hollow nail according to claim 1, which is characterized in that the internal strengthening core（3）With nail
Body（1）It socket-connects.
5. a kind of femoral neck bone hollow nail according to claim 1, which is characterized in that the rivet nut（1）With the head of a nail（2）It is logical
Cross fine thread（9）And internal thread（8）Connection.
6. a kind of femoral neck bone hollow nail according to claim 1, which is characterized in that the rivet nut（1）By Ti-6Al-4V
Material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720750602.8U CN208017566U (en) | 2017-06-26 | 2017-06-26 | A kind of femoral neck bone hollow nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720750602.8U CN208017566U (en) | 2017-06-26 | 2017-06-26 | A kind of femoral neck bone hollow nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208017566U true CN208017566U (en) | 2018-10-30 |
Family
ID=63897036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720750602.8U Expired - Fee Related CN208017566U (en) | 2017-06-26 | 2017-06-26 | A kind of femoral neck bone hollow nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208017566U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109602486A (en) * | 2018-12-31 | 2019-04-12 | 武汉德骼拜尔外科植入物有限公司 | A kind of internal fixation of spine joint coupling |
-
2017
- 2017-06-26 CN CN201720750602.8U patent/CN208017566U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109602486A (en) * | 2018-12-31 | 2019-04-12 | 武汉德骼拜尔外科植入物有限公司 | A kind of internal fixation of spine joint coupling |
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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 |
Granted publication date: 20181030 Termination date: 20190626 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |