CN205251665U - Locking marrow nail - Google Patents
Locking marrow nail Download PDFInfo
- Publication number
- CN205251665U CN205251665U CN201520911692.5U CN201520911692U CN205251665U CN 205251665 U CN205251665 U CN 205251665U CN 201520911692 U CN201520911692 U CN 201520911692U CN 205251665 U CN205251665 U CN 205251665U
- Authority
- CN
- China
- Prior art keywords
- nut
- rivet
- blind rivet
- pinning
- mandrel
- 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 provides a locking marrow nail belongs to the orthopedic medical devices field, including the nail body with be located the internal mandrel of nail, the nail body is the hollow tube column structure, it has the lockhole to open on the lateral wall of the nail body, is equipped with two spouts along the axial on the inner wall of the nail body, is linked together through a guide way between spout and the lockhole, mandrel comprises two parallel arrangement's mandrel pole, links to each other through the spring between two mandrel poles, is equipped with the pinning on the mandrel pole, and the mandrel pole passes through the pinning and moves in the spout of the nail body, the tail portion thread of the nail body connects a nut, and the afterbody of mandrel pole is located the nut. The utility model discloses simple structure, the processing ease, the operation is easy, and is consuming time few, and only an incision has the stability that the bone was held to the axial, and is high to the cure rate of fracture.
Description
Technical field
The utility model relates to orthopaedics medical instruments field, specifically a kind of intramedullary nail with lock.
Background technology
On the limb fractures such as treatment femur and shin bone, adopt in recent years comparatively advanced intramedullary nail technologyAnd equipment, intramedullary nail belongs to fixing new technology in fracture, and this technology adopts intramedullary nail add diagonal or walk crosswisePinning, makes it and whole long bone forms an entirety, can control to a certain extent fracture end rotation andShearing, prevents that fracture from rotating displacement, thereby the indication of intramedullary nail is expanded to comminuted, longThe fracture at oblique and femur two ends etc., has increased the stability of fracture fixation, has improved union rate,Reduce infection rate, more met biological method for the treatment of fracture has increased one. But in practiceFind that prior art still exists following defect: cross locking marrow nail tends to meet at the far and near end of fracture pinning at presentInaccurate to location, fixing screw is difficult to pass exactly intramedullary nail holes, and operation technique difficulty is large, establishesHigh for requiring, need sighting device, skin incision is more, and wound is large, loses blood many, and pinning error is many, easilyCause and fracture, operating time is long and fixing insecure, and under x-ray, locating ray has operator and patientInjury, later stage pinning produces stress raisers, occurs broken nail, affects union.
Intramedullary nail with lock, because pinning is positioned at the two ends of long diaphysis, must increase 7-8 place operative incision, installationThe complex operation of pinning, secondary damage is large; In operation, because intramedullary nail swings and the distance of main backstayChange, and height gauge can not accurately be located, cause locking of intramedullary nail and main backstay lockhole to occurDislocation, causes the time delay of performing the operation, the nude time under increase patient and doctor's x-ray, thus damage its health.
Summary of the invention
Problem to be solved in the utility model is: overcomes the deficiencies in the prior art, provides a kind of simple in structure,Processing ease, operation easily, consuming time few, only has place's otch, has the stability of axially holding bone, rightThe high intramedullary nail with lock of cure rate of fracture.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of intramedullary nail with lock,Comprise rivet nut and the blind rivet that is positioned at rivet nut, described rivet nut is hollow tubular structures, the sidewall of described rivet nutOn have lockhole, on the inwall of described rivet nut, be provided with vertically two chutes, between described chute and lockholeBe connected by a gathering sill;
Described blind rivet is made up of two blind rivet bars that be arranged in parallel, between described two blind rivet bars, passes through springBe connected, described blind rivet bar is provided with pinning, and described blind rivet bar moves in the chute of rivet nut by pinning;
The tailing screw flight of described rivet nut connects a nut, and the afterbody of described blind rivet bar is positioned at nut.
Further, the afterbody of described two blind rivet bars is hinged a pull bar, and described pull bar is positioned at nut.
Further, described pull bar is semicircular structure.
Further, between described two blind rivet bars, be connected by three springs, one of them spring connectsIn the middle of two blind rivet bars, another two springs are connected to end and the afterbody of two blind rivet bars.
Further, described lockhole is six, and described pinning is six.
Further, described rivet nut, blind rivet bar and spring are stainless steel material or titanium alloy material.
Advantage and the good effect that the utlity model has are:
(1) the utility model is simple in structure, processing ease, and operation is easily, consuming time few, only has a place to cutMouthful, there is the stability of axially holding bone, high to the cure rate of fracture.
(2) the utility model, according to the biomechanical principle of knochenbruch face repair of fractured bones, is broken through original locking marrowThe method that interior nail is fixing, utilize spring connect blind rivet bar on pinning promoted union, be fractureHealing provides best biomethanics environment.
(3) the utility model reduces the destruction to surrounding soft tissue's bed, the local blood supply regeneration of favourable fracture end,Promote fracture heals in early days, make adjacent joints can do as early as possible function exercise activity, avoided meat fiberOccur with synarthrophysis, the complication such as stiff.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model intramedullary nail with lock.
Fig. 2 is the cutaway view of the rivet nut of the utility model intramedullary nail with lock.
Fig. 3 is the structural representation that the pinning of the utility model intramedullary nail with lock is positioned at chute.
Fig. 4 is the structural representation that the pinning of the utility model intramedullary nail with lock is positioned at gathering sill.
Fig. 5 is the structural representation that the pinning of the utility model intramedullary nail with lock is positioned at lockhole.
In figure: 1, rivet nut; 2, blind rivet bar; 3, lockhole; 4, chute; 5, spring; 6, pinning;7, nut; 8, pull bar; 9, gathering sill.
Detailed description of the invention
As Figure 1-5, a kind of intramedullary nail with lock, comprises rivet nut 1 and the blind rivet that is positioned at rivet nut 1,Rivet nut 1 is hollow tubular structures, has six lockholes 3, on the inwall of rivet nut 1 on the sidewall of rivet nut 1Be provided with vertically two chutes 4, between chute 4 and lockhole 3, be connected by a gathering sill 9;
Blind rivet is made up of two blind rivet bars 2 that be arranged in parallel, passes through three springs between two blind rivet bars 25 are connected, and one of them spring 5 is connected in the middle of two blind rivet bars 2, and another two springs 5 connect respectivelyIn end and the afterbody of two blind rivet bars 2, blind rivet bar 2 is provided with pinning 6, and blind rivet bar 2 passes through pinningThe 6 interior movements of chute 4 in rivet nut 1;
The afterbody that the tailing screw flight of rivet nut 1 connects 7, two blind rivet bars 2 of a nut is hinged a semicircleThe pull bar 8 of structure, pull bar 8 is positioned at nut 7;
Rivet nut 1, blind rivet bar 2 and spring 5 are titanium alloy material.
The course of work of the present embodiment: grasp pull bar 8 when use, make blind rivet bar 2 by pinning 6In the interior movement of chute 4 of rivet nut 1; In the time that pinning 6 arrives the junction of chute 4 and gathering sill 9, turnMoving blind rivet bar 2, turns in gathering sill 9 pinning 6; Be rotated further blind rivet bar 2, pinning 6 is arrivedLockhole 3 places, pinning 6 is under the effect of spring 5, and pinning 6 is ejected outside lockhole 3, and is locked inIn lockhole 3.
Above embodiment of the present utility model is had been described in detail, but that described content is only this practicality is newThe preferred embodiments of type, can not be considered to for limiting practical range of the present utility model. Fan Yiben is practical newEqualization variation and improvement etc. that type application range is done, all should still belong to patent of the present utility model and containWithin scope.
Claims (6)
1. an intramedullary nail with lock, comprise rivet nut and the blind rivet that is positioned at rivet nut, it is characterized in that: described rivet nut is hollow tubular structures, on the sidewall of described rivet nut, has lockhole, on the inwall of described rivet nut, be provided with vertically two chutes, between described chute and lockhole, be connected by a gathering sill;
Described blind rivet is made up of two blind rivet bars that be arranged in parallel, between described two blind rivet bars, is connected by spring, and described blind rivet bar is provided with pinning, and described blind rivet bar moves in the chute of rivet nut by pinning;
The tailing screw flight of described rivet nut connects a nut, and the afterbody of described blind rivet bar is positioned at nut.
2. a kind of intramedullary nail with lock according to claim 1, is characterized in that: the afterbody of described two blind rivet bars is hinged a pull bar, described pull bar is positioned at nut.
3. a kind of intramedullary nail with lock according to claim 2, is characterized in that: described pull bar is semicircular structure.
4. a kind of intramedullary nail with lock according to claim 3, it is characterized in that: between described two blind rivet bars, be connected by three springs, one of them spring is connected in the middle of two blind rivet bars, and another two springs are connected to end and the afterbody of two blind rivet bars.
5. a kind of intramedullary nail with lock according to claim 4, is characterized in that: described lockhole is six, and described pinning is six.
6. a kind of intramedullary nail with lock according to claim 1, is characterized in that: described rivet nut, blind rivet bar and spring are stainless steel material or titanium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520911692.5U CN205251665U (en) | 2015-11-13 | 2015-11-13 | Locking marrow nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520911692.5U CN205251665U (en) | 2015-11-13 | 2015-11-13 | Locking marrow nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205251665U true CN205251665U (en) | 2016-05-25 |
Family
ID=55993219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520911692.5U Expired - Fee Related CN205251665U (en) | 2015-11-13 | 2015-11-13 | Locking marrow nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205251665U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106362261A (en) * | 2016-11-23 | 2017-02-01 | 天津健康家园科技有限公司 | Chair special for treating mental health concern |
| CN106422022A (en) * | 2016-11-30 | 2017-02-22 | 天津健康家园科技有限公司 | Spiral hypnosis instrument |
-
2015
- 2015-11-13 CN CN201520911692.5U patent/CN205251665U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106362261A (en) * | 2016-11-23 | 2017-02-01 | 天津健康家园科技有限公司 | Chair special for treating mental health concern |
| CN106422022A (en) * | 2016-11-30 | 2017-02-22 | 天津健康家园科技有限公司 | Spiral hypnosis instrument |
| CN106422022B (en) * | 2016-11-30 | 2024-05-07 | 天津健康家园科技有限公司 | Spiral hypnotic instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20211113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |