CN102362814B - Adjustable bone orthopedic external fixer - Google Patents
Adjustable bone orthopedic external fixer Download PDFInfo
- Publication number
- CN102362814B CN102362814B CN 201110179930 CN201110179930A CN102362814B CN 102362814 B CN102362814 B CN 102362814B CN 201110179930 CN201110179930 CN 201110179930 CN 201110179930 A CN201110179930 A CN 201110179930A CN 102362814 B CN102362814 B CN 102362814B
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- CN
- China
- Prior art keywords
- chute
- connecting rod
- rod
- adjusting rod
- slip cap
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- Expired - Fee Related
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Abstract
The invention discloses an adjustable bone orthopedic external fixer. One end of an elastic element is abutted against a position limiting block, the other end of the elastic element is abutted against a positioning block connected onto a regulating rod, a fixing sleeve is fixedly connected with the other end of the regulating rod, the regulating rod comprises a first connecting rod, a second connecting rod and a sleeve, the sleeve is sheathed on the first connecting rod, a radial first chute and a second chute positioned above the first chute are arranged on the peripheral surface of the first connecting rod, the first chute and the second chute are in symmetrical arrangement, an axial third chute is also arranged on the first connecting rod, both ends of the third chute are respectively communicated with the first chute and the second chute, the second connecting rod is provided with an axial through hole, the first connecting rod is inserted into the axial through hole of the second connecting rod, the end part of the second connecting rod is provided with a positioning lug boss, the positioning lug boss is embedded in the first chute. The adjustable bone orthopedic external fixer has the advantage that the length of the external fixer can be regulated.
Description
Technical field
The present invention relates to the armarium technical field, be specifically related to a kind of adjustable bone orthopedic external fixer.
Background technology
When glue is fractured under domestic many hospitalizes, adopt the Brown's frame, this device has the following disadvantages: traction frame and traction bow do not match more, and hauling block must place on the fracture limbs, have increased the height of frame, affect simultaneously the warming of limbs.Because compressive stress is the safest to osteocyte and bone framework, compressive stress is also the most reasonable indirectly.Overcome with axial metastable structure cut, turn round, transition tensile failure that flexure stress causes, satisfy the compressive stress demand at intermittence of bone and its cells, the basis of namely axially stablizing the flexible fastening principle with elasticity.Attempt is sought the material consistent with the flexible bone modulus and is done interior fixedly to be unpractical, itself to do interior fixing with the bone frame material exactly, increase by a bone and also can block half stress.Its intensity still protects the bone framework to exempt from the destruction that over-activity causes not in addition, and the most rational fixed apparatus should be that little stress does not block, and bears when stress is large more.This just depends on artificial elastic device, therefore, reasonably fixing should be can overcome cut, turn round, curved, again axially flexible, do not block the artificial elastic device of little pressure.For long bone, shearing can be regarded opposite two power of parallel cross-sectional direction as and draw mutually; Reversing is two tangent line pulling force of section two routine opposite directions centered by neutral axis; Bending then is a routine pressure, and another example is pulling force and since stress concentration this severally all be considered as harmful pulling force, take motorcycle damping device just can overcome to cut to turn round, curved, the illeffects that draws, do not block again the compressive stress transmission.Because this elastic energy overcomes or alleviates the motion momentum and the momentum that cause.Reduce biomaterial to the destruction of bone, so artificial joint etc. need that also this damping device is arranged.The patent No. provides a kind of multi-purpose extermal bone fixing support for 91215259 patent, this fixed support inelastic component, and apparatus volume is larger, and the length of self can't be adjusted, and can't be applicable to the people of differing heights.
Summary of the invention
The purpose of this invention is to provide a kind of adjustable bone orthopedic external fixer that can carry out length adjustment.
The technical scheme that realizes the object of the invention is as follows:
Adjustable bone orthopedic external fixer, comprise adjusting rod, flexible member, slip cap and fixed cover, be provided with the spicule hole on slip cap and the fixed cover, slip cap is enclosed within adjusting rod one end, adjusting rod is provided with the first limited block and the second limited block that is positioned at the slip cap two ends, flexible member also is enclosed within on the adjusting rod, one end of flexible member and the second limited block against, the other end be connected on the adjusting rod slip cap against, fixed cover is fixedly connected on the other end of adjusting rod, described adjusting rod comprises head rod, the second connecting rod and sleeve, jacket casing is on head rod, the side face of head rod is provided with the first chute radially and is positioned at the second chute of the first chute top, the first chute and the second chute are arranged symmetrically, also be provided with the 3rd axial chute on the head rod, the two ends of the 3rd chute are communicated with the first chute and the second chute respectively, described the second connecting rod is provided with axial through hole, head rod insert the second pitman shaft to through hole in, the end of the second connecting rod is provided with positioning convex, and this positioning convex is entrenched in the first chute.
Adopted such scheme, when external fixator of the present invention is carried out length adjustment, rotate the first adjusting rod, make the positioning convex of its end turn to the end of the first chute, promote the first adjusting rod downwards, positioning convex is moved in the second chute along the 3rd chute, again rotate the first adjusting rod, make positioning convex on the second adjusting rod arrive the other end of the second chute, the shortening process of adjusting rod is complete.If make the length of adjusting rod return to original state, get final product along the said process reverse operating.The invention solves the adjustment of external fixator length, applicable to the people of differing heights.
Description of drawings
Fig. 1 is the assembly structure sketch map of external fixator of the present invention;
Fig. 2 is the structural representation of adjusting rod among the present invention;
In the accompanying drawing, 1 is adjusting rod, and 2 is flexible member, and 3 is slip cap, and 4 is fixed cover, and 5 is limited block, and 6 is limited block, and 10 is head rod, and 11 is the second connecting rod, and 12 is the first chute, and 13 is the second chute, and 14 is the 3rd chute.
The specific embodiment
With reference to Fig. 1, adjustable bone orthopedic external fixer of the present invention comprises adjusting rod 1, flexible member 2, slip cap 3 and fixed cover 4.Be provided with spicule hole (not shown in the spicule hole pattern) on slip cap 3 and the fixed cover 4, slip cap 3 is enclosed within adjusting rod one end, and slip cap 3 can be slided axially sliding of adjusting rod on adjusting rod.Adjusting rod 1 is provided with the first limited block 5 and the second limited block 6 that is positioned at the slip cap two ends, wherein, the first limited block 5 that is positioned at the slip cap upper end is threaded with adjusting rod, be fixed at adjusting rod, also be fixed on the adjusting rod 1 motionless and be positioned at the second limited block 6 of regulating slip cap 3 lower ends.Flexible member 2 is spring, and flexible member 2 also is enclosed within on the adjusting rod, an end of flexible member and the second limited block 6 against, the other end be connected on the adjusting rod slip cap 3 against.Fixed cover 4 is fixedly connected on the other end of adjusting rod, fixed cover 4 hinged bearing pins, and the lower end of adjusting rod 1 is fixedly connected with this bearing pin, and adjusting rod 1 can rotate by whole fulcrum centered by bearing pin like this.For adjusting rod, himself can be adjusted in the length of axial direction, and its concrete structure is as follows:
As shown in Figure 2, adjusting rod 1 comprises head rod 10, the second connecting rod 11 and sleeve 15, sleeve 15 is enclosed within on the head rod, the side face of head rod is provided with the first chute 12 radially and is positioned at the second chute 13 of the first chute top, the first chute and the second chute are arranged symmetrically, the first chute and the second chute are the chute of " C " shape, and namely the first chute and the second chute are not complete cannelures.The two ends that also are provided with axial the 3rd chute 14, the three chutes 14 on the head rod lay respectively at the end of the first chute and the end of the second chute, so the two ends of the 3rd chute 14 are communicated with the first chute 12 and the second chute 13 respectively.The second connecting rod is provided with axial through hole, and head rod 10 inserts in the axial through hole of the second connecting rod 11, and the end of the second connecting rod 11 is provided with positioning convex, and this positioning convex is entrenched in the first chute.Because such relation that arranges, can make with the first chute or the second chute and on the same circumference of head rod, not be cut the part of processing grooving as stop portion, can judge exactly the place, position of the 3rd chute, when making the projection of the second connecting rod arrive the end of the first chute the head rod rotation, just can promote head rod downwards, the positioning convex of the second connecting rod is moved in the second chute along the 3rd chute, so namely can shorten the length of adjusting rod 1, otherwise, from the second chute 13, move to the positioning convex on the second connecting rod 11 in the first chute 12, can make the adjusting rod elongation, therefore, by such marriage relation, the length of adjusting rod is adjusted, so that use in the people who is fit to differing heights.Certainly, for the radial groove that is similar to the first chute and the second chute, can also arrange at head rod a plurality of so that adjust as required.
Claims (2)
1. adjustable bone orthopedic external fixer, comprise adjusting rod, flexible member, slip cap and fixed cover, be provided with the spicule hole on slip cap and the fixed cover, slip cap is enclosed within adjusting rod one end, adjusting rod is provided with the first limited block and the second limited block that is positioned at the slip cap two ends, flexible member also is enclosed within on the adjusting rod, one end of flexible member and the second limited block against, the other end be connected on the adjusting rod slip cap against, fixed cover is fixedly connected on the other end of adjusting rod, it is characterized in that: described adjusting rod comprises head rod, the second connecting rod and sleeve, jacket casing is on head rod, the side face of head rod is provided with the first chute radially and is positioned at the second chute of the first chute top, the first chute and the second chute are arranged symmetrically, also be provided with the 3rd axial chute on the head rod, the two ends of the 3rd chute are communicated with the first chute and the second chute respectively, described the second connecting rod is provided with axial through hole, head rod insert the second pitman shaft to through hole in, the end of the second connecting rod is provided with positioning convex, and this positioning convex is entrenched in the first chute.
2. adjustable bone orthopedic external fixer according to claim 1, it is characterized in that: described the first chute and the second chute are the chute of " C " shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110179930 CN102362814B (en) | 2011-06-30 | 2011-06-30 | Adjustable bone orthopedic external fixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110179930 CN102362814B (en) | 2011-06-30 | 2011-06-30 | Adjustable bone orthopedic external fixer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102362814A CN102362814A (en) | 2012-02-29 |
| CN102362814B true CN102362814B (en) | 2013-01-30 |
Family
ID=45689431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110179930 Expired - Fee Related CN102362814B (en) | 2011-06-30 | 2011-06-30 | Adjustable bone orthopedic external fixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102362814B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2653007A1 (en) * | 1989-10-17 | 1991-04-19 | Fixano Productions | EXTERNAL BONE CONTENT DEVICE. |
| NL1015284C2 (en) * | 2000-05-24 | 2001-11-27 | Gerrit Johannes Termaten | Fixation device for orthopedic applications. |
| CN2487348Y (en) * | 2001-07-16 | 2002-04-24 | 张廷丰 | Adjustable external fixer for fracture |
| CN202184784U (en) * | 2011-06-30 | 2012-04-11 | 江苏美德康信息科技有限公司 | Adjustable bone orthopedic external fixer |
-
2011
- 2011-06-30 CN CN 201110179930 patent/CN102362814B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102362814A (en) | 2012-02-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20130630 |