CN102440823B - Orthopaedic external fixing bracket connecting rod capable of plastic deformation - Google Patents
Orthopaedic external fixing bracket connecting rod capable of plastic deformation Download PDFInfo
- Publication number
- CN102440823B CN102440823B CN201110285775.4A CN201110285775A CN102440823B CN 102440823 B CN102440823 B CN 102440823B CN 201110285775 A CN201110285775 A CN 201110285775A CN 102440823 B CN102440823 B CN 102440823B
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- fixed bar
- spherical
- tensioning bolt
- plastic deformation
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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.)
- Expired - Fee Related
Links
- 239000011148 porous material Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
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- Surgical Instruments (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The invention discloses an orthopaedic external fixing bracket connecting rod capable of plastic deformation. The orthopaedic external fixing bracket connecting rod comprises fixed rods, tensioning bolts, bispherical gaskets and a cable, wherein one surface of each bispherical gasket is a raised spherical face and the other surface is a concave spherical face; the fixed rods are two separated rods; internal threads are formed in internal holes at the ends of the fixed rods, wherein a raised spherical face is formed at the part, in contact with the bispherical gasket, of one rod, and a concave spherical face is formed at the part, in contact with the bispherical gasket, of the other rod; the outside diameters of the tensioning bolts are equal to those of the internal holes at the ends of the fixed rods; external threads are formed on the surfaces of the tensioning bolts and are matched with the internal threads in the internal holes at two ends of the fixed rods; the cable adopts a flexible structure; bulbs are formed at two ends of the cable; the diameter of each bulb is larger than the pore diameter of the middle of each tensioning bolt; and one tensioning bolt, one fixed rod, the bispherical gasket, the other fixed rod and the other tensioning bolt are serially connected in sequence through the cable. The connecting rod has advantage that universal plastic deformation of the connecting rod is realized.
Description
Technical field
The present invention relates to medical instruments field, specifically a kind of external fixator for orthopedics dep connecting rod with inner shaping structure.
Background technology
External fixing rack is the conventional apparatus of trauma fracture, but at present external fixing bracket connecting rod just lacks the simple connecting rod of moulding ability, and clinician in use must planned well fracture axis, otherwise usually faces the predicament that connecting rod is difficult to assemble.Once fracture reduction and malalignment, current extenal fixation connecting rod for want of moulding ability will be difficult to correct, clinician otherwise remove heavily come, or increase more connecting rod and joint formation divided piston rod, make extenal fixation become unnecessary heaviness and complexity.Both added operating time and wound, and caused a lot of troubles also to adjustment fracture, directly affect the actual therapeutic effect of external fixing rack, add burden and the misery of patient.
Summary of the invention
In order to solve above-mentioned prior art Problems existing, the invention provides a kind of Orthopaedic external fixing bracket connecting rod capable of plastic deformation, by the simple adjustment of self structure, achieving the universal plastic deformation of connecting rod.
Technical scheme of the present invention is: a kind of Orthopaedic external fixing bracket connecting rod capable of plastic deformation, and it is made up of fixed bar, tensioning bolt, two spherical pad and hawser.Described pair of spherical pad one side is convex spherical, and another side is concave spherical surface, and two spheres are parallel, is hole in the middle of pad; Described fixed bar is two bars be separated, each fixed bar is the middle cylinder for hole, the internal holes of each fixed bar termination has internal thread, and the part that one of them bar contacts with two spherical pad is convex spherical, and the part that another bar contacts with two spherical pad is concave spherical surface; Described tensioning bolt is also the middle cylinder for hole, and its external diameter is equal with the internal holes of fixed bar termination, and there is external screw thread on the surface of tensioning bolt, the screw-internal thread fit in the hole of this external screw thread and inside, fixed bar two ends; Described hawser is flexible structure, and bulb is formed at two ends, and the diameter of bulb is greater than the aperture in the middle of tensioning bolt, hawser according to the order of tensioning bolt, fixed bar, two spherical pad, another fixed bar, another tensioning bolt by described unit Series.
The termination of described fixed bar is all outer six square nut structures.
A termination of described tensioning bolt is exposed outside fixed bar, and this termination is outer six square nut structures.
Described pair of spherical pad has multiple.
Described convex spherical and concave spherical surface are matsurface.
The main TV structure of described pair of spherical pad is the circle of middle with hole.
The operation principle of this connecting rod is: when needing whole connecting rod to be fixed into the curved shape of a band angle, precession tensioning bolt, two tensioning bolts are moved to relative direction, the tension reduction that hawser is formed, multiple pairs of spherical pads carry out sphere slip and make whole connecting rod form new curved shape, then tensioning bolt is screwed out, two tensioning bolts are moved round about, frictional force between the increase of cable tension and multiple pairs of spherical pads reaches an equalization point, and namely whole connecting rod keeps fixing deformation form.
This connecting rod is compared with current extenal fixation connecting rod has advantage:
1, overcome a moulding difficult problem for current connecting rod, utilize the movement between pad to realize universal angulation and axle moves, utilize the opening and closing that cable tension realizes between pad, thus moulding and fixing;
2, features simple structure is reliable, and flexible operation, avoids multi link used at present and polylinker redundant fashion, reduce costs and patient burden.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present invention;
Fig. 2 is the front view of tensioning bolt and fixed bar end head;
Fig. 3 is the front view of two spherical pad;
Fig. 4 is the right view of two spherical pad.
In figure, 1 is hawser, and 2 is tensioning bolt, and 3 is fixed bar, and 4 is two spherical pads.
Detailed description of the invention
As shown in Figure 1, a kind of Orthopaedic external fixing bracket connecting rod capable of plastic deformation, it is made up of fixed bar 3, tensioning bolt 2, two spherical pad 4 and hawser 1.Described pair of spherical pad 4 one side is convex spherical, and another side is concave spherical surface, and two spheres are parallel, is hole in the middle of pad; Described fixed bar 3 is two bars be separated, each fixed bar 3 is middle cylinders for hole, the internal holes of each fixed bar 3 termination has internal thread, and the part that one of them bar contacts with two spherical pad 4 is convex spherical, and the part that another bar contacts with two spherical pad 4 is concave spherical surface; Described tensioning bolt 2 is also the middle cylinder for hole, and its external diameter is equal with the internal holes of fixed bar 3 termination, and there is external screw thread on the surface of tensioning bolt 2, the screw-internal thread fit in the hole of this external screw thread and inside, fixed bar 3 two ends; Described hawser 1 is flexible structure, bulb is formed at two ends, the diameter of bulb is greater than the aperture in the middle of tensioning bolt 2, hawser 1 according to the order of tensioning bolt 2, fixed bar 3, two spherical pad 4, another fixed bar 3, another tensioning bolt 2 by described unit Series.
The termination of described fixed bar 3 is all outer six square nut structures; A termination of described tensioning bolt 2 is exposed outside fixed bar 3, and this termination is outer six square nut structures, and outer six square nuts are all made in the termination of fixed bar 3 and tensioning bolt 2, are the shapes in order to better fix whole connecting rod.
Described pair of spherical pad 4 has multiple.Two spherical pad 4 keeps certain quantity effectively can produce deformation.
Described convex spherical and concave spherical surface are matsurface.Matsurface can strengthen the frictional force between two spherical pad 4.
The main TV structure of described pair of spherical pad 4 is the circle of middle with hole.
Fixed bar 3, tensioning bolt 2, two spherical pad 4 and hawser 1 can be stainless steels, also can be highstrenghtpistons.
Claims (5)
1. an Orthopaedic external fixing bracket connecting rod capable of plastic deformation, is characterized in that: it is made up of fixed bar (3), tensioning bolt (2), two spherical pad (4) and hawser (1); Described pair of spherical pad (4) one side is convex spherical, and another side is concave spherical surface, and two spheres are parallel, is hole in the middle of pad; Described fixed bar (3) is two bars be separated, each fixed bar (3) is the middle cylinder for hole, the internal holes of each fixed bar (3) termination has internal thread, the part that one of them bar contacts with two spherical pad (4) is convex spherical, and the part that another bar contacts with two spherical pad (4) is concave spherical surface; Described tensioning bolt (2) is also the middle cylinder for hole, its external diameter is equal with the internal holes of fixed bar (3) termination, there is external screw thread on the surface of tensioning bolt (2), the screw-internal thread fit in the hole of this external screw thread and fixed bar (3) inside, two ends; Described hawser (1) is flexible structure, bulb is formed at two ends, the diameter of bulb is greater than the aperture in the middle of tensioning bolt (2), and hawser (1) is in order by tensioning bolt (2), fixed bar (3), two spherical pad (4), another fixed bar (3), another tensioning bolt (2) series connection.
2. a kind of Orthopaedic external fixing bracket connecting rod capable of plastic deformation according to claim 1, is characterized in that: the termination of described fixed bar (3) is all outer six square nut structures; A termination of described tensioning bolt (2) is exposed at fixed bar (3) outward, and this termination is outer six square nut structures.
3. a kind of Orthopaedic external fixing bracket connecting rod capable of plastic deformation according to claim 1, is characterized in that: described pair of spherical pad (4) has multiple.
4. a kind of Orthopaedic external fixing bracket connecting rod capable of plastic deformation according to claim 1, is characterized in that: described convex spherical and concave spherical surface are matsurface.
5. a kind of Orthopaedic external fixing bracket connecting rod capable of plastic deformation according to claim 1, is characterized in that: the main TV structure of described pair of spherical pad (4) is the circle of middle with hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110285775.4A CN102440823B (en) | 2011-09-23 | 2011-09-23 | Orthopaedic external fixing bracket connecting rod capable of plastic deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110285775.4A CN102440823B (en) | 2011-09-23 | 2011-09-23 | Orthopaedic external fixing bracket connecting rod capable of plastic deformation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102440823A CN102440823A (en) | 2012-05-09 |
| CN102440823B true CN102440823B (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110285775.4A Expired - Fee Related CN102440823B (en) | 2011-09-23 | 2011-09-23 | Orthopaedic external fixing bracket connecting rod capable of plastic deformation |
Country Status (1)
| Country | Link |
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| CN (1) | CN102440823B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111588456B (en) * | 2020-05-23 | 2022-03-25 | 余丹丹 | High-holding-force low-loss slow-release medical bone screw and punching device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1523949A1 (en) * | 2003-10-17 | 2005-04-20 | BIEDERMANN MOTECH GmbH | Surgical rod element, stabilisation device, and method of manufacturing the element |
| CN101828950A (en) * | 2010-04-04 | 2010-09-15 | 武汉康斯泰德科技有限公司 | Flexible knee joint connecting rod fixed by straddling knee joint |
| CN102133128A (en) * | 2010-01-21 | 2011-07-27 | 林士闳 | spinal fixation system |
| CN202235623U (en) * | 2011-09-23 | 2012-05-30 | 吕昌伟 | Shapeable connecting rod for orthopedic external fixator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2012686B1 (en) * | 2006-04-18 | 2013-10-02 | Joseph Nicholas Logan | Spinal rod system |
-
2011
- 2011-09-23 CN CN201110285775.4A patent/CN102440823B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1523949A1 (en) * | 2003-10-17 | 2005-04-20 | BIEDERMANN MOTECH GmbH | Surgical rod element, stabilisation device, and method of manufacturing the element |
| CN102133128A (en) * | 2010-01-21 | 2011-07-27 | 林士闳 | spinal fixation system |
| CN101828950A (en) * | 2010-04-04 | 2010-09-15 | 武汉康斯泰德科技有限公司 | Flexible knee joint connecting rod fixed by straddling knee joint |
| CN202235623U (en) * | 2011-09-23 | 2012-05-30 | 吕昌伟 | Shapeable connecting rod for orthopedic external fixator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102440823A (en) | 2012-05-09 |
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Granted publication date: 20150325 Termination date: 20180923 |
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| CF01 | Termination of patent right due to non-payment of annual fee |