CN2219680Y - Combined single arm type external fixation device for reduction of fracture - Google Patents
Combined single arm type external fixation device for reduction of fracture Download PDFInfo
- Publication number
- CN2219680Y CN2219680Y CN 95230781 CN95230781U CN2219680Y CN 2219680 Y CN2219680 Y CN 2219680Y CN 95230781 CN95230781 CN 95230781 CN 95230781 U CN95230781 U CN 95230781U CN 2219680 Y CN2219680 Y CN 2219680Y
- Authority
- CN
- China
- Prior art keywords
- arm
- pin
- holding
- screw
- universal joint
- 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 combined single arm type external fixation device for the reduction of fractures, which belongs to medical instruments. The utility model is composed of a needle-holding device and a connecting rod assembly, wherein, the needle-holding device is integrally formed by a needle-holding body and a body clamping block which are fixed by a bolt; a universal joint is connected with the connecting rod assembly by a taper pin. A guiding rod and an adjusting arm of the connecting rod assembly are respectively provided with an eccentric fixed shaft and a sphere seat, and the universal joint is connected with the sphere seat. Three kinds of adjusting arms are used for being suitable for the reduction and the fixation of ordinary fractures and multiple-section fractures so that the utility model has the advantages of good mechanical performance and firm fixation. The universal joint is used for satisfying the angle selection of the fracture part so that reduction and fixation are synchronous. The utility model can be widely applied to different fractures, particularly thighbone fractures.
Description
This utility model belongs to medical apparatus and instruments, refers in particular to external immobilizer for fracture restitution
The existing miscellaneous fracture external fixator that resets, kind is more.The single arm type external immobilizer for fracture restitution, it is by holding needle device and link assembly constitutes, and it is relatively simple for structure, and axial force is relatively poor.Bilateral formula external immobilizer for fracture restitution, Kirschner wire passes tissue, and is big to skin injury.And semi-ring formula external fixator, to the health fixation, good stability, but volume is bigger, and heaviness is unfavorable for that patient rests.
The purpose of this utility model provides a kind of on-load fracture is carried out machinery adjustment, helps patient and has a rest and early ambulant, resets and fixing synchronous combination single arm type external immobilizer for fracture restitution thereby reach.
The purpose of this utility model is achieved in that it is by holding needle device and link assembly constitutes.Holding needle device has the pin breast for holding between pin body and the body fixture block on the correspondence position, and is fixed as one by hexagon socket head cap screw, is connected with link assembly through the tapering pin by universal joint.
The link assembly structure is equipped with the guide post that an end has stop screw for adjusting in the arm, by ring washer semicircle cover, alignment pin and holding screw location, adjusts to be enclosed within and adjusts on the arm, is located by lock nut.Guide post and adjustment arm are equipped with eccentric fixed axis and spheroid seat respectively, and there is the locking ball groove guide post and adjustment arm end, by the spheroid gland universal joint are connected with the spheroid seat, the locking ball location.
For realizing the purpose of this utility model, the adjustment arm in the link assembly adopts three kinds of forms.
Adjust arm for first kind and be one and have external screw thread and set screw hole, in the guide post groove is arranged, there is the hole of adorning eccentric fixed axis, spheroid seat the other end, there is the locking ball groove end.
Second kind is adjusted arm is to install additional at the middle part of first kind of adjustment arm to hold pin screw rod, pad circle and nut.
The third adjusts arm is to section at the middle part of first kind of arm, fastening by locking ball and hold-doun nut location, and is equipped with and holds pin screw rod, packing ring and nut.
This external fixator designs for the basis in conjunction with biomechanics and clinical manifestation and therapy in row booster, the mechanics of materials and human anatomy, Principle of Mechanical Designing and the wound.Adopt universal joint to satisfy fracture site and angle Selection, carry out machinery adjustment all directions and become the angle firm.Eccentric fixed axis makes universal joint and spheroid seat be close to fixing.Spheroid gland and coupling part adopt the draw-in groove structure easy for installation.Be applicable to various traumatic fractures, more be applicable to femoral shaft and femur and tibia folding.Link assembly can freely be adjusted length, control synthetism length.Adopt first kind to adjust arm, be applicable to that the general reduction of the fracture fixes.Adopt second kind to adjust arm, it is fixing to be applicable to that several sections of fracture resets.Adopt the third to adjust arm, it is fixing to be applicable to that several sections of fracture resets, and can control synthetism length.
The utility model has the advantages that, integrate flexible, translation, rotation, displacement and become the angle multi-functional with direction.Good mechanical property, accurate, firm, stable.Fixed performance is good, and the plane of threading a needle can be selected, and is beneficial to working doctor.Volume is little, and is in light weight, but patient's early ambulant promotes healing.Be convenient to nursing and handle wound, make to reset and fix synchronous.
Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.
Embodiment 1
Fig. 1 is this utility model structural representation
1-adjust arm 2-guide post 3-adjust cover 4-eccentric fixed axis 5-spheroid seat 6-universal joint 7-spheroid gland 8-stop screw 9-lock nut 10-holding screw 11-ring washer semicircle cover 12-alignment pin 13-locking ball 14-tapering pin 15-hold pin body 16-body fixture block 17-hexagon socket head cap screw
This external fixator is by holding needle device and link assembly constitutes, hold needle device and on the correspondence position pin hole is arranged for holding between pin body (15) and the body fixture block (16), and be fixed as one by hexagon socket head cap screw (17), be connected with link assembly through tapering pin (14) by universal joint (6).The link assembly structure has the guide post of stop screw (8) (2) in the adjustment arm (1) end being housed, by ring washer semicircle cover (11), alignment pin (12) and holding screw (10) location, adjusting cover (3) is enclosed within on the adjustment arm (1), by locking nut (9) location, guide post (2) and adjustment arm (1) are equipped with eccentric fixed axis (4) and spheroid seat (5) respectively, there is the locking ball groove guide post (2) and adjustment arm (1) end, by spheroid gland (7) universal joint (6) is connected with spheroid seat (5), locking ball (13) location.Adjust arm (1) and be one and have external screw thread and holding screw (10) hole, in guide post (2) groove is arranged, there is the hole of adorning eccentric fixed axis (4) and spheroid seat (5) other end, there is the locking ball groove end.Be applicable to general fracture.
Embodiment 2
Fig. 2 is this utility model several sections of fracture external fixator structural representation that resets
18-hold pin screw rod 19-packing ring 20-nut
This external fixator is by holding needle device and link assembly constitutes.Different with embodiment 1 except that adjusting arm (1) in the link assembly, all the other each parts are all identical with example 1.Adjusting arm (1) is to install additional at the adjustment arm middle part of embodiment 1 to hold pin screw rod (18), packing ring (19) and nut (20).It is fixing to be applicable to that several sections of fracture resets.
Embodiment 3
Fig. 3 is the adjustable external fixator structural representation that resets of this utility model several sections of fracture
21-hold-doun nut
This external fixator is by holding needle device and link assembly constitutes, and the adjustment arm (1) that removes in the link assembly is different with embodiment 1, and all the other each parts are all identical with embodiment 1.Adjusting arm (1) is to open at adjustment arm (1) middle part of embodiment 1 tool, fastening by locking ball and hold-doun nut (21) location, and is equipped with and holds pin screw rod (18), packing ring (19) and nut (20).Adjustment arm band is held the pin screw portion different length, can select for fracture and synthetism length.It is fixing to be applicable to that several sections of fracture resets, and can control synthetism length.
Claims (4)
1. make up the single arm type external immobilizer for fracture restitution, by holding needle device and link assembly constitutes, it is characterized in that holding needle device and on the correspondence position pin hole is arranged for holding between pin body (15) and the body fixture block (16), and be fixed as one by hexagon socket head cap screw (17), be connected with coupling assembling through tapering pin (14) by universal joint (6)
The link assembly structure has the guide post of stop screw (8) (2) in the adjustment arm (1) end being housed, and by ring washer semicircle cover (11), alignment pin (12) and holding screw (10) location, adjusting cover (3) is enclosed within on the adjustment arm (1), locate by lock nut (9), guide post (2) and adjustment arm (1) are equipped with eccentric fixed axis (4) and spheroid seat (5) respectively, there is the locking ball groove guide post (2) and adjustment arm (1) end, be connected locking ball (13) location with spheroid seat (5) by the strong universal joint (6) of spheroid gland (7).
According to claim 1 fast external fixator, it is characterized in that adjusting arm (1) and be one and have external screw thread and holding screw (10) breast, in guide post (2) groove is arranged, there is the hole of adorning eccentric fixed axis (4) and spheroid seat (5) other end, there is the locking ball groove end.
3. external fixator according to claim 2 is characterized in that adjusting arm (1) middle part and installs additional and hold pin screw rod (18), packing ring (19) and nut (20).
4. external fixator according to claim 2 is characterized in that transferring pad arm (1) middle part to section, and is fastening by locking ball and hold-doun nut (21) location, and is equipped with and holds pin screw rod (18), packing ring (19) and nut (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95230781 CN2219680Y (en) | 1995-04-08 | 1995-04-08 | Combined single arm type external fixation device for reduction of fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95230781 CN2219680Y (en) | 1995-04-08 | 1995-04-08 | Combined single arm type external fixation device for reduction of fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2219680Y true CN2219680Y (en) | 1996-02-14 |
Family
ID=33875543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95230781 Expired - Fee Related CN2219680Y (en) | 1995-04-08 | 1995-04-08 | Combined single arm type external fixation device for reduction of fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2219680Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102599966A (en) * | 2012-04-17 | 2012-07-25 | 上海市奉贤区中心医院 | External fixer for femur intertrochanteric fracture |
| CN106691556A (en) * | 2016-11-18 | 2017-05-24 | 周海东 | Multi-azimuth reduction external fixator for bone fracture |
| CN108670383A (en) * | 2018-05-30 | 2018-10-19 | 北京工业大学 | A kind of multifunction combined external fixation device |
-
1995
- 1995-04-08 CN CN 95230781 patent/CN2219680Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102599966A (en) * | 2012-04-17 | 2012-07-25 | 上海市奉贤区中心医院 | External fixer for femur intertrochanteric fracture |
| CN106691556A (en) * | 2016-11-18 | 2017-05-24 | 周海东 | Multi-azimuth reduction external fixator for bone fracture |
| CN108670383A (en) * | 2018-05-30 | 2018-10-19 | 北京工业大学 | A kind of multifunction combined external fixation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |