CN103876811A - Unilateral three-dimensional external fixator - Google Patents
Unilateral three-dimensional external fixator Download PDFInfo
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- CN103876811A CN103876811A CN201410137567.3A CN201410137567A CN103876811A CN 103876811 A CN103876811 A CN 103876811A CN 201410137567 A CN201410137567 A CN 201410137567A CN 103876811 A CN103876811 A CN 103876811A
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- China
- Prior art keywords
- fixed block
- external fixator
- monolateral
- dimensional external
- diameter
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
Abstract
The invention provides a unilateral three-dimensional external fixator which comprises connecting rods, short fixing rods, fixing bolts, traction nails and clamping blocks. The traction nails are fixed to the short fixing rods. The connecting rods are sleeved with the clamping blocks. The short fixing rods are fixed to the clamping blocks. The clamping blocks are fixed to the connecting rods through the fixing bolts. Self locking of the short fixing rods and the traction nails is achieved in a threaded mode. The unilateral three-dimensional external fixator is provided with a small number of components and is simple in structure, easy to assemble and capable of conducting fixation easily. Since the combined clamping blocks are selected, the fixing positions and the number of the clamping blocks can be selected according to fracture types, and true three-dimensional fixation can be realized through the clamping blocks and the short fixing rods with different lengths and different radians. The unilateral three-dimensional external fixator is light and attractive in overall design and capable of being used by a patient conveniently and facilitating self nursing.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, particularly a kind of monolateral three-dimensional external fixator.
Background technology
Start by medullo-puncture needle fixation for treatment fracture from the beginning of this century, after it, in the development of many decades, form the external fixator being formed by locking pin, fixation clamp and large extension bar, and update, apply further extensively, be embodied in: 1. locking pin: application rustless steel screw needle.2. external fixator motility: external fixer that can only single plane adjustment forms many planes by gimbal suspension sliding bar, can make the functions such as the reduction of the fracture, traction, pressurization.3. improve holder stability.Before the seventies, people generally use double-flanged end external fixator, think that this kind of more monolateral fixed mount of external fixer mechanical stability is strong, but danger and the clinical use of threading a needle because of double-flanged end external fixer are unsatisfied with, and people's understanding in depth mechanically stable and union of fracture relation, at present more trend towards using monolateral, do not penetrate limbs both sides, fully and not definitely the single side type external fixer of firm stable.
In recent years, unilateral external fixator obtains wide clinical application.Unilateral external fixator is easy to operate in limbs one side, reduces limbs and runs through the neural blood vessel damage that may cause; Little to injured limb wound, soft tissue is peeled off few; Flexible operation, has certain stability; Be in hospital to perform the operation without secondary and get inside-fixture, reduce patient's misery, reduce expenses.But there is following shortcoming in current unilateral external fixator:
1, range of activity is limited, cannot fix departing from fixed bar position far away, can not realize real three-dimensional and fix;
2, joint is too much, and the degree of fixing rear stressed generation deformation is large, a little less than fixing dynamics;
3, complex operation in art, causes operating time to extend;
4, locking pin exposed parts is not attractive in appearance, affects patient and wears the clothes, and affects patient's daily routines.
Summary of the invention
In order to solve problems of the prior art, the present invention proposes a kind of monolateral three-dimensional external fixator, and is achieved through the following technical solutions.
The present invention proposes a kind of monolateral three-dimensional external fixator, comprises connecting rod, fixing stub and traction nail, and described traction nail is fixed on fixing stub, also comprises fixture block, and described fixture block is socketed on connecting rod, and described fixing stub is fixed on fixture block.These external fixator parts are few, simple in structure, are easy to assembling and fixing.
Monolateral three-dimensional external fixator of the present invention adopts unique fixture block design, and the angle between fixture block and connecting rod can regulate, and fixes thereby can realize real three-dimensional.Can determine combination is installed according to the practical situation of fracture, the quantity of the length to connecting rod, fixing stub and radian and fixture block, fixing stub, traction nail is carried out adjustment in various degree, connecting rod can carry out pre-bending according to type and the position of fracture before operation, to meet the fixed demand of different parts.One side of connecting rod can arrange pressue device.This use New Type Material can be rustless steel or duralumin material.
The present invention can also further improve by the following technical programs:
Preferably, the broken formula self-locking hold-down screw that described traction nail is formed in one, comprises broken portion and nail body; Described nail body comprises bone drill cutting edge, self tapping screw mandrel, locking screw thread and nut; The main body of described broken portion is cylindrical, and the position that broken portion is connected with nut is truncated cone-shaped.Traction nail of the present invention adopts broken formula self-locking hold-down screw, and nail intensity is large, simple to operate, it is strong to lock; After installation finishes, screw tail end is broken, and outward appearance is succinct, docile and obedient with limbs, does not affect daily clothes dress.
Preferably, the top of described fixing stub is provided with the first screw matching with described broken formula self-locking hold-down screw, and the bottom of fixing stub is provided with columniform alignment pin; Described fixture block comprises left fixed block, right fixed block and set bolt, the top of described left fixed block and right fixed block is provided with the semicircle locating hole matching with described alignment pin, the top of left fixed block and right fixed block is provided with the second screw matching with described set bolt, and the bottom of left fixed block and right fixed block is provided with the semi-circular recesses matching with described connecting rod.After the fixed block docking of two of the left and right of fixture block, two semicircle locating holes piece together the circular hole that can hold alignment pin, and two semi-circular recesses piece together the circular hole that can hold connecting rod.Left and right fixed block is stuck on connecting rod by groove, the alignment pin of fixing stub is stretched in locating hole, thereby be locked by set bolt, piece will be fixed stub and connecting rod tightly clamps.Fixing stub adopts engage thread and staple self-locking, and simple, convenient, intensity is large, fixation.Can select as required the fixing stub of different length.
Preferably, on the inwall of described connecting rod surface and semi-circular recesses, be provided with the anti-slip veins of mutual coupling, on the surface of described alignment pin and the inwall of described semicircle locating hole, be provided with the anti-slip veins matching.Adopt such structure can strengthen the constant intensity between fixing stub, fixture block and connecting rod, prevent from becoming flexible.
Preferably, the length of described left fixed block and right fixed block is 24mm, wide for 20mm, thickness are 5.2mm, and the radius of described set bolt is 3.5mm; The diameter of described the first screw is 6mm; The diameter of described connecting rod, the radius of semi-circular recesses, the radius of semicircle locating hole and the diameter of alignment pin are 8mm; The length of the cylindrical part of described broken part is that 60mm, diameter are 6mm, and the length of truncated cone-shaped part is that 5mm, upper bottom surface diameter are that 2.5mm, bottom surface diameter are 6mm; The length of described locking screw thread is 6mm, and flight pitch is 0.5mm; Described thread tapping pole length is that 38mm, diameter are 5mm; The length of described bone drill cutting edge is 5mm; Described nut opposite side distance is from being 6mm, and nut thickness is 5mm.
Preferably, the afterbody cover of described traction nail has silicon rubber cup.After installation finishes, the end section of broken formula self-locking hold-down screw is fractureed, put silicon rubber cup protection, in case scratch skin and clothes.
Preferably, the quantity of described fixture block is at least 2.Can need to select different fixture block quantity according to difference.
Preferably, described fixing stub is curved.Between the top of fixing stub and alignment pin, different angles can be designed to, different radian designs can be selected as required, with the limbs of more fitting.
Compared with prior art, the present invention has following beneficial effect:
1, monolateral three-dimensional external fixator of the present invention adopts unique fixture block design, and the angle between fixture block and connecting rod can regulate, and fixes thereby can realize real three-dimensional.
2, fixed part is few, constant intensity is high, it is little that deformation occurs.
3, install simply, be convenient to operation technique, greatly shortened in operation and adjusted the required time of fixture.
4, mounting means and adaptive combination are various, can need to adjust required connecting rod, fixture block, fixing stub, broken formula nail etc. according to length, direction, to meet the fixed demand of different parts.
5, adopt broken formula self-locking traction nail, constant intensity is large, simple to operate, and outward appearance is succinct, docile and obedient with limbs, does not affect daily clothes dress.
6, global design is lightly attractive in appearance, and patient uses comfortable, and oneself's nursing is convenient.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram of the monolateral three-dimensional external fixator of the present invention;
Fig. 2 is the front view of fixing stub;
Fig. 3 is the top view of fixing stub;
Fig. 4 is the side view of fixing stub in embodiment mono-;
Fig. 5 is the side view of fixing stub in embodiment bis-;
Fig. 6 is the front view of left fixed block;
Fig. 7 is the right view of left fixed block;
Fig. 8 is the front view of right fixed block;
Fig. 9 is the right view of right fixed block;
Figure 10 is the top view of left fixed block;
Figure 11 is the top view of right fixed block;
Figure 12 is the structural representation of broken formula self-locking hold-down screw.
Labelling in figure: 1-connecting rod, 2-fixture block, 3-fixes stub, 4-set bolt, 5-traction nail, the broken portion of 51-, 52-follows closely body, 521-nut, 522-locking screw thread, 523-self tapping screw mandrel, 524-bone drill cutting edge, 6-the first screw, 7-alignment pin, the semicircle locating hole of 8-, 9-the second screw, 10-semi-circular recesses, 11-anti-slip veins.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described further.
Embodiment mono-:
As shown in Fig. 1-Figure 12, this routine monolateral three-dimensional external fixator comprises connecting rod 1, four fixture blocks 2, four fixing stubs 3 and four traction nails 5, described traction nail 5 is fixed on fixing stub 3, and described fixture block 2 is socketed on connecting rod 1, and described fixing stub 3 is fixed on fixture block 2.
The broken formula self-locking hold-down screw that described traction nail 5 is formed in one, comprises broken portion 51 and nail body 52; Described nail body 52 comprises bone drill cutting edge 524, self tapping screw mandrel 523, locking screw thread 522 and nut 521; The main body of described broken portion 51 is cylindrical, and the position that broken portion 51 is connected with nut 521 is truncated cone-shaped.
The top of described fixing stub 3 is provided with the first screw 6 matching with described broken formula self-locking hold-down screw, and the bottom of fixing stub 3 is provided with columniform alignment pin 7; Described fixture block 2 comprises left fixed block, right fixed block and set bolt 4, the top of described left fixed block and right fixed block is provided with the semicircle locating hole 8 matching with described alignment pin 7, the top of left fixed block and right fixed block is provided with the second screw 9 matching with described set bolt 4, and the bottom of left fixed block and right fixed block is provided with the semi-circular recesses 10 matching with described connecting rod 1.
The anti-slip veins 11 that is provided with mutual coupling on the inwall of described connecting rod 1 surface and semi-circular recesses 10, is provided with the anti-slip veins 11 matching on the inwall of the surface of described alignment pin 7 and described semicircle locating hole 8.
The length of described left fixed block 21 and right fixed block 22 is 24mm, wide for 20mm, thickness are 5.2mm, and the radius of described set bolt 4 is 3.5mm; The diameter of described the first screw 6 is 6mm; The diameter of described connecting rod 1, the radius of semi-circular recesses 10, the radius of semicircle locating hole 8 and the diameter of alignment pin 7 are 8mm; The length of the cylindrical part of described broken part is that 60mm, diameter are 6mm, and the length of truncated cone-shaped part is that 5mm, upper bottom surface diameter are that 2.5mm, bottom surface diameter are 6mm; The length of described locking screw thread 522 is 6mm, and flight pitch is 0.5mm; Described self tapping screw mandrel 523 length are that 38mm, diameter are 5mm; The length of described bone drill cutting edge 524 is 5mm; Described nut 521 opposite side distance are from being 6mm, and nut 521 thickness are 5mm.
Embodiment bis-:
The difference of the present embodiment and embodiment mono-is, described fixing stub 3 is curved.
Although the present invention discloses as above with embodiment; so it is not in order to limit the present invention; any have a general technical staff of the technical field of the invention; without departing from the spirit and scope of the present invention; when being used for a variety of modifications and variations, the scope that therefore protection scope of the present invention ought define depending on appending claims is as the criterion.
Claims (8)
1. a monolateral three-dimensional external fixator, comprise connecting rod (1), fixing stub (3) and traction nail (5), described traction nail (5) is fixed on fixing stub (3), it is characterized in that: also comprise fixture block (2), it is upper that described fixture block (2) is socketed in connecting rod (1), and described fixing stub (3) is fixed on fixture block (2).
2. monolateral three-dimensional external fixator according to claim 1, is characterized in that: the broken formula self-locking hold-down screw that described traction nail (5) is formed in one, comprises broken portion (51) and nail body (52); Described nail body (52) comprises bone drill cutting edge (524), self tapping screw mandrel (523), locking screw thread (522) and nut (521); The main body of described broken portion (51) is cylindrical, and the position that broken portion (51) is connected with nut (521) is truncated cone-shaped.
3. monolateral three-dimensional external fixator according to claim 2, it is characterized in that: the top of described fixing stub (3) is provided with the first screw (6) matching with described broken formula self-locking hold-down screw, the bottom of fixing stub (3) is provided with columniform alignment pin (7); Described fixture block (2) comprises left fixed block, right fixed block and set bolt (4), the top of described left fixed block and right fixed block is provided with the semicircle locating hole (8) matching with described alignment pin (7), the top of left fixed block and right fixed block is provided with the second screw (9) matching with described set bolt (4), and the bottom of left fixed block and right fixed block is provided with the semi-circular recesses (10) matching with described connecting rod (1).
4. monolateral three-dimensional external fixator according to claim 3, it is characterized in that: on the inwall of described connecting rod (1) surface and semi-circular recesses (10), be provided with the anti-slip veins (11) of mutual coupling, on the inwall of the surface of described alignment pin (7) and described semicircle locating hole (8), be provided with the anti-slip veins (11) matching.
5. monolateral three-dimensional external fixator according to claim 3, is characterized in that: the length of described left fixed block and right fixed block is 24mm, wide for 20mm, thickness are 5.2mm, and the radius of described set bolt (4) is 3.5mm; The diameter of described the first screw (6) is 6mm; The radius of the diameter of described connecting rod (1), the radius of semi-circular recesses (10), semicircle locating hole (8) and the diameter of alignment pin (7) are 8mm; The length of the cylindrical part of described broken part is that 60mm, diameter are 6mm, and the length of truncated cone-shaped part is that 5mm, upper bottom surface diameter are that 2.5mm, bottom surface diameter are 6mm; The length of described locking screw thread (522) is 6mm, and flight pitch is 0.5mm; Described self tapping screw mandrel (523) length is that 38mm, diameter are 5mm; The length of described bone drill cutting edge (524) is 5mm; Described nut (521) opposite side distance is from being 6mm, and nut (521) thickness is 5mm.
6. according to the monolateral three-dimensional external fixator described in claim 1-5 any one, it is characterized in that: the afterbody cover of described traction nail (5) has silicon rubber cup.
7. according to the monolateral three-dimensional external fixator described in claim 1-5 any one, it is characterized in that: the quantity of described fixture block (2) is at least 2.
8. according to the monolateral three-dimensional external fixator described in claim 1-5 any one, it is characterized in that: described fixing stub (3) is curved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410137567.3A CN103876811B (en) | 2014-04-08 | 2014-04-08 | Unilateral three-dimensional external fixator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410137567.3A CN103876811B (en) | 2014-04-08 | 2014-04-08 | Unilateral three-dimensional external fixator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103876811A true CN103876811A (en) | 2014-06-25 |
| CN103876811B CN103876811B (en) | 2017-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410137567.3A Expired - Fee Related CN103876811B (en) | 2014-04-08 | 2014-04-08 | Unilateral three-dimensional external fixator |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2075950U (en) * | 1990-09-01 | 1991-05-01 | 南京晨光机器厂 | Unilateral nail universal external fixator |
| DE9103480U1 (en) * | 1990-05-07 | 1991-06-06 | Schmidt, Guenter, Dr.Med., 4200 Oberhausen, De | |
| US5746741A (en) * | 1996-05-06 | 1998-05-05 | Tufts University | External fixator system |
| US5976133A (en) * | 1997-04-23 | 1999-11-02 | Trustees Of Tufts College | External fixator clamp and system |
| CN2643848Y (en) * | 2003-06-13 | 2004-09-29 | 罗伟初 | External fixation device for unilateral bone |
| CN201303975Y (en) * | 2008-12-16 | 2009-09-09 | 刘锋卫 | Medical micro integral outside fixed support locking device |
| CN201384552Y (en) * | 2009-04-15 | 2010-01-20 | 魏宝富 | Osseous pin capable of being broken by pressure |
| CN203749537U (en) * | 2014-04-08 | 2014-08-06 | 魏春群 | Unilateral three-dimensional outer fixing apparatus |
-
2014
- 2014-04-08 CN CN201410137567.3A patent/CN103876811B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9103480U1 (en) * | 1990-05-07 | 1991-06-06 | Schmidt, Guenter, Dr.Med., 4200 Oberhausen, De | |
| CN2075950U (en) * | 1990-09-01 | 1991-05-01 | 南京晨光机器厂 | Unilateral nail universal external fixator |
| US5746741A (en) * | 1996-05-06 | 1998-05-05 | Tufts University | External fixator system |
| US5976133A (en) * | 1997-04-23 | 1999-11-02 | Trustees Of Tufts College | External fixator clamp and system |
| CN2643848Y (en) * | 2003-06-13 | 2004-09-29 | 罗伟初 | External fixation device for unilateral bone |
| CN201303975Y (en) * | 2008-12-16 | 2009-09-09 | 刘锋卫 | Medical micro integral outside fixed support locking device |
| CN201384552Y (en) * | 2009-04-15 | 2010-01-20 | 魏宝富 | Osseous pin capable of being broken by pressure |
| CN203749537U (en) * | 2014-04-08 | 2014-08-06 | 魏春群 | Unilateral three-dimensional outer fixing apparatus |
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| Publication number | Publication date |
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| CN103876811B (en) | 2017-12-12 |
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Granted publication date: 20171212 Termination date: 20190408 |