CN203873851U - Portable external fracture fixing device - Google Patents
Portable external fracture fixing device Download PDFInfo
- Publication number
- CN203873851U CN203873851U CN201420091254.4U CN201420091254U CN203873851U CN 203873851 U CN203873851 U CN 203873851U CN 201420091254 U CN201420091254 U CN 201420091254U CN 203873851 U CN203873851 U CN 203873851U
- Authority
- CN
- China
- Prior art keywords
- nail
- ball
- external fixator
- end difference
- ladder
- 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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Classifications
-
- 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
- A61B17/6425—Devices extending alongside the bones to be positioned specially adapted to be fitted across a bone joint
Abstract
The utility model discloses a portable external fracture fixing device which comprises a connecting support, and self-tapping bone nails respectively connected to the two ends of the connecting support, wherein the self-tapping bone nails are stepped. The portable external fracture fixing device is used for temporarily and externally fixing a lower limb (limb) for first aid during war or earthquake to prevent secondary damage of nerve and blood vessels due to section breaking and shifting during a transhipment process. The stepped self-tapping bone nails can be put in place with bare hands and require no electric drill or hand drill. The connecting rod of the connecting support and the bone nails are connected through ball socket apparatus, and a bone nail clamp and the stepped self-tapping bone nail are rotatably connected through two shafts. Three-dimensional fixing of fractured bones can be realized by adjusting the directions of the bone nail clamp and the stepped self-tapping bone nail.
Description
Technical field
This utility model relates to orthopedic medical device, relates in particular to a kind of portable fracture external fixator that can be used for the extremity fracture that the natural disasters such as war wound one line or earthquake cause.
Background technology
Extremity fracture be at ordinary times with the common disability in wartime.According to statistics, in all war wounds, what extremity were injured accounts for 77%, and wherein 32% is accompanied by fracture.The fracture causing due to high energy shell fragment is mostly with large-area soft tissue injury, and wound is severe contamination often, and mostly is compound fracture, if deal with improperly, easily causes and damages and infect, and disability rate is high, and the correct processing of extremity war wound fracture is extremely important.
The difference of the design of the extremity fracture external fixer while being applied at present field operations one line and disaster generation under disaster relief emergency condition and technology and at ordinary times use is little, as the French Fessa that mainly contains of foreign military's application, the CMC of Croatia, the Synthes of the U.S., Hoffman-II type etc., the new sleeve-style external fixation of domestic 304 hospitals of PLA development, the general one-sided Combined bone external-fixer of flat war of Fuzhou General Hospital of Nanjing Military Command's development; A kind of quick external fixation system for fractures of 174 hospitals of PLA development.Fixing bone pin still need to assist to screw in sclerotin by electric drill or bitbrace, and connected system is more complicated, complex operation, and also inserting of nail require parallel inserting in principle, and in actual mechanical process, cannot realize the absolute parallel of nail.Such external fixer is bulky, heaviness, single cannot complete independently, be difficult to accomplish three-dimensional fracture fixation, under the emergency situations such as war or earthquake, be difficult to meet the demands.
Summary of the invention
For the shortcoming of prior art, the purpose of this utility model is to provide a kind of portable fracture external fixator, the laborsaving principle of boring at twice by means of one of ladder self tapping nail nail hole, has solved that rescue personnel is single cannot not insert the problem of operation by complete independently fracture fixation nail by electric drill or bitbrace.In addition, the three-dimensional connection bracket of design, the fixed mount having solved is in the past difficult to realize the reduction of the fracture problem that meets clinical requirement.
To achieve these goals, the technical solution of the utility model is: a kind of portable fracture external fixator, comprise connecting rod, be connected to described connecting rod two ends for inserting two embedded devices of skeleton, described embedded device comprises nail folder and is arranged on the tapping screw in this nail clip, described self tapping nail is ladder self tapping nail, between described nail folder and described connecting rod, is connected by a ball-and-socket device.
Preferably, the ailhead of described tapping screw comprises the first end difference and the second end difference, at the first end difference and the second end difference, bilateral arcuate groove and tapping screw thread is all set.
Preferably, at the first ladder and the second end difference, bit cutting blade is set, described bilateral arcuate groove is flute and is arranged on the first end difference and a part for second end difference adjacent with the first end difference, and flute is the oblique or straight shape of spiral type.
Preferably, described nail folder comprises two nail clamping plate that can clamp ladder self tapping nail nail tail, each nail clamping plate can clamp a ladder self tapping nail and can do diaxon rotation and adjust direction, and nail presss from both sides the connecting pin pressing from both sides by nail and is connected with the multi-directional ball of ball-and-socket device.
Preferably, described ball-and-socket device comprises multi-directional ball and fixed cover and fixes half bowl and movable half bowl and cam structure, and cam structure is on connection tube, nail folder is connected in multi-directional ball, ball-and-socket device connects connection tube by fixed cover, by locking multi-directional ball on rotating cam, or screw mechanism locking.
Preferably, half bowl of rustless steel or aluminium alloy face that the inner face contacting with multi-directional ball is annular knurl in described ball-and-socket device, described multi-directional ball surface is nylon or the aluminium alloy face of annular knurl.
Preferably, described connection tube is mainly combined by inner and outer tubes and retaining mechanism, and inner and outer tubes can be polygon, the length of the flexible adjustable connection tube of inner tube.
Preferably, the inner and outer tubes of described connection tube are locked by cam mechanism, also can lock by screw mechanism.
Preferably, be cylindrical sleeve at the described nail sleeve that is enclosed within ladder self tapping nail outside.
Preferably, the material of described ladder self tapping nail is rustless steel or titanium alloy, also can adopt other to have the material of corresponding hardness and biocompatibility; The material of described sleeve is aluminium alloy, and the material of described connecting rod is aluminium alloy or rustless steel.
Preferably, described ball-and-socket device also comprises and connects the outer core of inner core, liner, connection, connects inner core and is connected the built-in of outer core and is threaded.
Compared with prior art, this utility model is applied to interim outer the fixing of lower limb under the emergency situations such as war wound emergency treatment or earthquake more, prevent the nerve causing due to disconnected section displacement in transport process, the secondary damage of blood vessel, its locking pin is the ladder self tapping nail that can free-handly insert, do not need electric drill or bitbrace secondary attack, between connecting rod and nail folder, be connected by ball-and-socket, the nail clamping plate that between nail folder and ladder self tapping nail, diaxon rotates are connected, by adjusting fixing that nail presss from both sides and the direction realization of ladder self tapping nail is three-dimensional.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is assembling schematic diagram of the present utility model
Fig. 2 is STRUCTURE DECOMPOSITION figure of the present utility model.
Fig. 3 is the two screw thread ladder self tapping nail figure of helicla flute.
Fig. 4 is the two screw thread ladder self tapping nail figure of straight trough.
Fig. 5 is that straight trough adds the two screw thread ladder self tapping nail figure of little skewed slot.
Fig. 6 is the two screw thread ladder self tapping nail figure of skewed slot.
Fig. 7 is nail folder and multi-directional ball installation diagram.
Fig. 8 is ball-and-socket device profile.
Fig. 9 connects connection tube figure.
Figure 10 is nail folder details drawing.
Figure 11 is square connection tube scheme.
Figure 12 is the screw mechanism locking scheme of ball-and-socket device.
Detailed description of the invention
Consult Fig. 1 to Figure 10, the portable fracture external fixator of the present embodiment, comprise connection bracket (this connection bracket comprises connecting rod 3 and nail folder 2), be connected to wherein skeleton folder 2 and the common composition embedded device of tapping screw 1 of four ladder self tapping nail 1(for inserting bone at described connection bracket two ends), described connection bracket comprises connecting rod 3 and the nail folder 2 at connecting rod two ends is installed, described connecting rod comprises connection tube 4 and the ball-and-socket device 5 at connection tube two ends is installed, between described nail folder 2 and described connecting rod 3, be connected by ball-and-socket device 5, described nail folder 2 has two shaft rotating devices, and be connected with two ladder self tapping nails 1.Kit has nail sleeve, hands is twisted single-way screw cutter and spanner 34 continuously.
The material of described ladder self tapping nail 1 can be rustless steel or titanium alloy, also can adopt other to have the material of corresponding hardness and biocompatibility; The ailhead 19 of described ladder self tapping nail comprises that the length of the first end difference 20 and the second end difference 21, the first end differences is greater than the thickness of bones of extremities cortex, diameter be approximately the second ladder step diameter 1/3rd to 2/3rds; At the first end difference 20 and the second end difference 21, bit cutting blade 22 is set, coordinate screw thread is cut in bone material, the nail tip of the first end difference 20 is to have certain angle (as 60-120 °) taper, above it without screw thread.Bilateral in the part of the first end difference 20 and second end difference 21 adjacent with the first end difference 20 arranges flute 23, flute 23 can be spiral type, or be optionally oblique 35 or straight shape 36, its cross sectional shape is as shown in Figure 37,38,39, flute can only arrange one, or multiple (as 2 to 4); At the first ladder and the second end difference, tapping screw thread is set, it is equidistant or by equidistantly not changing that screw thread can be; Rivet nut can be isometrical or taper; The shape of nail tail 18 parts can be four jiaos or other shapes (as interior hexagon).The step structure ailhead design of described ladder self tapping nail, the first stepped portion can position, and can not need free-handly under too large external force to shoot a hole that diameter is less, the second stepped portion so on aperture basis free-hand shooting, by means of a laborsaving principle that bore at twice in nail hole of ladder self tapping nail, realize twice free-hand boring and tapping, and without auxiliary by electric drill or bitbrace.
Described nail folder comprises that two can clamp the nail clamping plate 27 of ladder self tapping nail nail tail, the clamping screw mandrel 31 of nail clamping plate, and the cross bar 32 of two clamping screw mandrels 31 of connection, there are in addition the required parts of clamping, comprise wing nut 30, recessed/convex surface packing ring 25,26,28,29; Each nail clamping plate 27 can clamp a ladder self tapping nail 1; Nail clamping plate 27 can be around clamping screw mandrel 31 axle rotations, and clamping screw mandrel 31 can rotate around cross bar 32, and therefore nail clamping plate 27 can be done two direction of principal axis adjustment; So just do not require that free-hand two nail solids that pierce are parallel, because single free-hand two nails of inserting are difficult to three-dimensional parallel in the wild.Whole nail folder 2 is connected with the multi-directional ball 7 of ball-and-socket device by connecting pin 33, after sticking into, is compressed and can be fixed by rotating cam 1.
The structures such as described ball-and-socket device comprises multi-directional ball 7, fixed cover 9, fixes half bowl 6, movable half bowl 8 and cam 1, cam one 10 structures are on connection tube 4, nail folder 2 connects in multi-directional ball 7 by connecting pin 33, and ball-and-socket device 5 connects connection tube 4 by fixed cover 9.In this design, the connecting pin 33 of nail folder 2 is snapped in after multi-directional ball 7, multi-directional ball 7 fix half bowl 6 and movable half bowl 8 in, can rotate to a certain extent adjustment angle, to coordinate different fracture situation.Determine after angle, by bolt on rotating cam 1, activity is compressed for half bowl 8, can lock multi-directional ball 7, also can adopt screw mechanism locking multi-directional ball 41.Half bowl of rustless steel or aluminium alloy face that the inner face contacting with multi-directional ball is annular knurl in described ball-and-socket device, described multi-directional ball surface is nylon or the aluminium alloy face of annular knurl, has increased the frictional force while compression, instant good stability.
Described connection tube is telescopic connection tube, and the main connection tube outer tube 13 by adjustable-length and connection tube inner tube 17 and cam 2 14 combine, and inner and outer tubes can be polygon (as square 40).Connection tube inner tube 17 can, in the inner slidable adjustment length of connection tube outer tube 13, coordinate different fracture situation demands; After length is determined, by rotating cam 2 14 by bolt-lock on connection tube inner and outer pipes tightly, also can screw mechanism locking 42.
Nail sleeve of described ladder self tapping nail overcoat, this sleeve is cylindrical shape, is enclosed within on nail and thrusts limbs, can effectively separate soft tissue and set up the service aisle of putting nail, prevents that soft tissue from further damaging.Other kit has continuous hands to twist single-way screw cutter and spanner 34(rotating cam).
This utility model improves self tapping nail for the shortcoming of prior art.Described ladder self tapping nail step structure design, by means of a laborsaving principle that bore at twice in nail hole of ladder self tapping nail, realize free-hand screw tap twice.Described nail folder comprises two nail clamping plate that can clamp ladder self tapping nail nail tail, each nail clamping plate can clamp a ladder self tapping nail, every ladder self tapping nail can be made diaxon and freely rotate, less demanding to the three-dimensional collimation of the free-hand nail piercing like this, the three-dimensional that can meet nail is fixed.Nail folder is connected with the multi-directional ball of ball-and-socket device by connecting pin, can rotate to a certain extent adjustment angle, fixes with the three-dimensional that meets nail folder, coordinates different fracture situation.Above-mentioned structural design can be adjusted the direction of each portion easily, and realizes the reduction of the fracture and fix.
In use, for the open fracture of tibia or femur, according to the position of fracture, at the far-end of fracture and near-end, under sleeve auxiliary, free-hand self tapping is inserted two pieces of ladder self tapping nails to this utility model respectively; After putting nail and finishing, the nail clamping plate of nail folder are packed into nail tail, rotate the orientation of adjusting nail clamping plate by diaxon, tighten the wing nut nail that is fixedly clamped; The connecting pin of nail folder is inserted to the multi-directional ball jack of ball-and-socket device, connect nail folder and connecting rod; Adjust nail folder orientation, then by adjusting telescopic connection tube, tighten peg with double (end) wrench after determining appropriate length, fix fracture end in desirable position.
Concrete using method following (illustrating the operation of external fixer with field Open-type Tibia Fracture): 1), after conventional anesthesia sterilization, operator holds fracture near-end on the other hand, and 2 ladder self tapping nails of cover upper bush are screwed into the injury of the bone by another hands; 2) two nails parallel inserting as far as possible, but angular deviation in fact to a certain extent, the orientation of the nail clamping plate by regulating diaxon rotation makes up; After the near-end of fracture is successfully inserted two ladder self tapping nails, be inserted in the nail clamping plate of nail folder at the nail tail of two nails, and the wing nut of tightening on nail folder installs nail folder; 3) with identical operation, fracture far-end is carried out to inserting of ladder self tapping nail and fixing of nail folder; 4) connecting pin of the nail folder of near-end and far-end is inserted respectively in the multi-directional ball of ball-and-socket device at connecting rod two ends, carry out the reduction of the fracture, regulate the orientation of nail folder, rotating cam is by nail folder and the locking of ball-and-socket device, regulate connection tube length locking, fracture end is fixed on to desirable position; 5) patient is carried on to stretcher, be transported to ambulance or rear field hospital.
Claims (10)
1. a portable fracture external fixator, comprise connecting rod, be connected to described connecting rod two ends for inserting two embedded devices of skeleton, it is characterized in that, described embedded device comprises nail folder and is arranged on the tapping screw in this nail clip, described self tapping nail is ladder self tapping nail, between described nail folder and described connecting rod, is connected by a ball-and-socket device.
2. portable fracture external fixator according to claim 1, is characterized in that, the ailhead of described tapping screw comprises the first end difference and the second end difference, at the first end difference and the second end difference, bilateral arcuate groove and tapping screw thread is all set.
3. portable fracture external fixator according to claim 2, it is characterized in that, at the first ladder and the second end difference, bit cutting blade is set, described bilateral arcuate groove is flute and is arranged on the first end difference and a part for second end difference adjacent with the first end difference, and flute is the oblique or straight shape of spiral type.
4. portable fracture external fixator according to claim 1, is characterized in that, between described nail folder and connecting rod, is connected by a ball-and-socket device, and nail fixture has two shaft rotating devices, and with two ladder self-drilling connections.
5. portable fracture external fixator according to claim 1, it is characterized in that, described nail clip comprises two clamping plate that can clamp ladder tapping screw nail tail, each clamping plate can clamp a ladder tapping screw and can do the adjustment of diaxon direction rotation, and nail clip is connected with the multi-directional ball of ball-and-socket device by connecting pin.
6. portable fracture external fixator according to claim 1, it is characterized in that, described ball-and-socket device comprises multi-directional ball and fixed cover and fixes half bowl and movable half bowl and cam structure, cam structure is on connection tube, nail clip is connected in multi-directional ball, ball-and-socket device connects described connection tube by fixed cover, by the tight multi-directional ball of bolt on rotating cam, or screw mechanism locking.
7. portable fracture external fixator according to claim 1, is characterized in that, described connection tube is mainly combined by inner and outer tubes and retaining mechanism, and inner and outer tubes can be polygon, the length of the flexible adjustable connection tube of inner tube.
8. portable fracture external fixator according to claim 6, is characterized in that, the inner and outer tubes of described connection tube are locked by cam mechanism, also can lock by screw mechanism.
9. portable fracture external fixator according to claim 1, is characterized in that, is cylindrical sleeve at the described nail sleeve that is enclosed within ladder self tapping nail outside.
10. portable fracture external fixator according to claim 4, is characterized in that, described ball-and-socket device also comprises fixed cover, fix half bowl, multi-directional ball, movable half bowl, between fixed cover and connecting rod, is threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420091254.4U CN203873851U (en) | 2013-03-01 | 2014-02-28 | Portable external fracture fixing device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310066649 | 2013-03-01 | ||
| CN201310066649.9 | 2013-03-01 | ||
| CN201420091254.4U CN203873851U (en) | 2013-03-01 | 2014-02-28 | Portable external fracture fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203873851U true CN203873851U (en) | 2014-10-15 |
Family
ID=51304027
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410072448.4A Active CN103989512B (en) | 2013-03-01 | 2014-02-28 | Portable fracture external fixator |
| CN201420091254.4U Expired - Fee Related CN203873851U (en) | 2013-03-01 | 2014-02-28 | Portable external fracture fixing device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410072448.4A Active CN103989512B (en) | 2013-03-01 | 2014-02-28 | Portable fracture external fixator |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN103989512B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103989512A (en) * | 2013-03-01 | 2014-08-20 | 中山大学 | Portable outer fixing device for fractures |
| CN112220541A (en) * | 2020-11-11 | 2021-01-15 | 佳木斯大学附属第一医院 | Wrist fracture first aid external fixation support |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016149470A2 (en) * | 2015-03-17 | 2016-09-22 | Jeffery Cresina | External fixation system |
| CN105455886A (en) * | 2015-12-31 | 2016-04-06 | 张英泽 | Fracture traction fixator capable of carrying out fracture traction fixation and rapid reduction simultaneously |
| CN108904208B (en) * | 2018-07-23 | 2021-02-23 | 玉林市好邦医疗设备有限责任公司 | Universal joint arm hand rest |
| CN111166491A (en) * | 2020-03-11 | 2020-05-19 | 北京梅德厚普科技有限公司 | Surgery operation double-ball fixing device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1237496B (en) * | 1989-10-26 | 1993-06-08 | Giuseppe Vrespa | SCREW DEVICE FOR ANCHORING BONE PROSTHESES, METHOD FOR THE APPLICATION OF SUCH DEVICE AND RELATED EQUIPMENT |
| US5658283A (en) * | 1995-02-15 | 1997-08-19 | Huebner; Randall J. | External fixator for repairing fractures |
| FR2705882A1 (en) * | 1993-06-01 | 1994-12-09 | Hardy Jean Marie | Scalable modular external fixator for immobilizing a fracture site. |
| CN2643848Y (en) * | 2003-06-13 | 2004-09-29 | 罗伟初 | External fixation device for unilateral bone |
| US7033363B2 (en) * | 2004-05-19 | 2006-04-25 | Sean Powell | Snap-lock for drill sleeve |
| EP2218415B1 (en) * | 2009-02-16 | 2011-05-04 | Stryker Trauma AG | Bone screw and production method therefor |
| CN103989512B (en) * | 2013-03-01 | 2018-02-09 | 中山大学 | Portable fracture external fixator |
-
2014
- 2014-02-28 CN CN201410072448.4A patent/CN103989512B/en active Active
- 2014-02-28 CN CN201420091254.4U patent/CN203873851U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103989512A (en) * | 2013-03-01 | 2014-08-20 | 中山大学 | Portable outer fixing device for fractures |
| CN103989512B (en) * | 2013-03-01 | 2018-02-09 | 中山大学 | Portable fracture external fixator |
| CN112220541A (en) * | 2020-11-11 | 2021-01-15 | 佳木斯大学附属第一医院 | Wrist fracture first aid external fixation support |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103989512A (en) | 2014-08-20 |
| CN103989512B (en) | 2018-02-09 |
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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: 20141015 Termination date: 20210228 |
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| CF01 | Termination of patent right due to non-payment of annual fee |