CN206518588U - A kind of bone reduction mechanism for repair of fractured bones - Google Patents
A kind of bone reduction mechanism for repair of fractured bones Download PDFInfo
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- CN206518588U CN206518588U CN201621141453.7U CN201621141453U CN206518588U CN 206518588 U CN206518588 U CN 206518588U CN 201621141453 U CN201621141453 U CN 201621141453U CN 206518588 U CN206518588 U CN 206518588U
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Abstract
The utility model is related to a kind of bone reduction mechanism for repair of fractured bones.It is characterized in that including main shaft, being symmetricly set on the left-handed screw and right handed screw of main shaft both sides, right handed worm is identical with the structure of left-hand screw bar, and joint ball, joint ball alignment pin, joint ball locating piece, joint ball locating cover, fix bar and draw point fixation kit are equipped with left-hand screw bar and right handed worm.The beneficial effects of the utility model are：1. precisely resetting, difficulty and operating time of the doctor to the reduction of the fracture are reduced；2. the stability fixed, holding bone stump that can be stable is on required position, while can guarantee that suffering limb carries out early functional exercise again.
Description
Technical field
The utility model is related to a kind of bone reduction mechanism for repair of fractured bones.
Background technology
Fracture is a kind of wound common on Orthopedic Clinical, and patient needs to receive corresponding treatment to ensure after fracture occurs
Impaired bone is got well.Position of the current fractures mode according to where its fixture is different, is divided into interior fixation and outer
Fix two big modes.Outer fixation mainly has the fixed forms such as plintlet, gypsum, resin, exterior fixing rack.Outer fixed form wound
It is smaller, but be generally difficult to accurate reseting fracture end, be generally used for Fracture Simple and stable fracture；Methods of internal fixation is applicable complicated bone
Folding and unstable fracture, although the reduction of the fracture and fixed reliable, but add Iatrogenic injury, may trigger infect etc. it is a series of
Complication and sequelae, in addition, pain and scar can not be avoided.
With the high speed development of modern society, the high Energy Damage such as traffic accident, high falling turns into the main of fracture
The cause of disease, the fracture that high-energy damage is caused is almost complicated fracture and unstable fracture, it is necessary to which open reduction+implants are solid
It is fixed, for patient that each needs is performed the operation, from recognizing that it is all one section of painful Wit course to receive.Each patient
A kind of all in expectation is simple minimally invasive such as plaster fixing, and the fractures skill of strong fixation can be accurately resetted as performing the operation
Art.Whether such expectation can realize, in recent years the numeral such as Modern Imaging Technique, computer aided measurement design, rapid shaping
The technologies such as change technology are fast-developing, and possibility is provided for this, and modern orthopaedics will also enter a brand-new epoch.
Utility model content
For problems of the prior art, the purpose of this utility model is to provide a kind of bone for repair of fractured bones
The technical scheme of bone resetting-mechanism.
Described a kind of bone reduction mechanism for repair of fractured bones, it is characterised in that including main shaft, be symmetricly set on master
The left-handed screw and right handed screw of axle both sides, right handed screw are identical with the structure of left-handed screw, on left-handed screw and right handed screw
It is equipped with joint ball, joint ball alignment pin, joint ball locating piece, joint ball locating cover, fix bar and draw point fixation kit.
Described a kind of bone reduction mechanism for repair of fractured bones, it is characterised in that the main shaft two ends are provided with direction phase
Anti- female thread structure, one end of left-handed screw and one end of right handed screw are provided with to be engaged with the female thread structure of main shaft
External thread structure, the other end of left-handed screw and the other end of right handed screw are hollow cylindrical structural；Cylinder knot
Structure is provided with the circular hole for being used for installing joint ball alignment pin, cylindrical structural and is equipped with joint ball locating piece and joint ball,
Joint ball alignment pin is eccentric structure, and cradle head ball alignment pin can drive joint ball locating piece to move and then locking joint
Ball, the end face of cylindrical structural sets the joint ball locating cover of limited location joint ball, joint ball locating cover and cylindrical structural spiral shell
Connect cooperation；One end that joint ball stretches out joint ball locating cover is screw-rod structure, and screw-rod structure is engaged with the internal thread of fix bar,
Draw point fixation kit is set in fix bar.
Described a kind of bone reduction mechanism for repair of fractured bones, it is characterised in that the joint ball alignment pin two ends are
Cylindrical structure, and it is eccentric cylinder structure that at least one end, which has in the middle of interior hexagonal structure, joint ball alignment pin,.
Described a kind of bone reduction mechanism for repair of fractured bones, it is characterised in that the joint ball locating piece and joint
Ball alignment pin contact jaw is cylindric concave surface, and joint ball locating piece is spherical concave surface with joint ball contact jaw.
Described a kind of bone reduction mechanism for repair of fractured bones, it is characterised in that the joint ball locating cover is hollow
Cylindrical-shaped structure, the diameter through hole smaller than joint ball is provided with joint ball locating cover is used for the screw rod through joint ball
Structure.
Described a kind of bone reduction mechanism for repair of fractured bones, it is characterised in that the draw point fixation kit includes steel
Pin fixed block A, draw point fixed block B, draw point fixed block C, draw point fixed block D, countershaft and spring；One end of countershaft is interior hexagonal knot
Structure, the other end is screw-rod structure；Draw point fixed block A carries female thread structure, and draw point fixed block A and draw point fixed block B is one group,
Installed in screw rod one end of countershaft, the circular hole one of draw point fixed block A and draw point fixed block B compositions can be inserted in fix bar；Draw point
Fixed block C and draw point fixed block D is one group, installed in interior hexagonal structure one end of countershaft, draw point fixed block C and draw point fixed block
The circular hole two of D compositions can be inserted in draw point with a scale；Spring is socketed on countershaft, and is fixed positioned at draw point fixed block B with draw point
Between block C.
The beneficial effects of the utility model are：
1. precisely resetting, difficulty and operating time of the doctor to the reduction of the fracture are reduced；
2. the stability fixed, holding bone stump that can be stable is on required position, while can guarantee that suffering limb again
Carry out early functional exercise.
Brief description of the drawings
The intelligent personalized ectoskeleton schematic diagrames of Fig. 1；
Fig. 2 locating piece schematic diagrames；
Draw point schematic diagram with a scale Fig. 3；
Fig. 4 bone reduction structural scheme of mechanism；
Fig. 5 is Fig. 4 A-A diagrammatic cross-sections；
Fig. 6 spindle mounted schematic diagrames；
Fig. 7 left-handed screw schematic diagrames；
Fig. 8 joint balls alignment pin and left-handed screw assembling schematic diagram；
Fig. 9 joint balls locating piece and joint ball assembling schematic diagram；
Figure 10 joint balls locating cover and left-handed screw assembling schematic diagram；
Figure 11 fix bar schematic diagrames；
Figure 12 draw point fixation kit schematic diagrames；
Figure 13 countershaft schematic diagrames；
Figure 14 benchmark fixed plate structure schematic diagrames；
Figure 15 benchmark fixed plate scheme of installations；
Figure 16 fracture schematic diagrames；
Intelligent personalized exoskeleton device scheme of installation before Figure 17 resets；
Intelligent personalized exoskeleton device scheme of installation after Figure 18 resets；
In figure：The intelligent personalized ectoskeletons of 100-；The main bone matrix of 101-；The auxiliary bone matrix I of 102-1；102-2 fibulas
Bone matrix II；103- positioning holes；104- locating pieces；105- positioning hole screwed holes；106- bone matrix screwed holes；104-1 decorative patterns
Structure；104-2 locating piece screwed holes；300- draw points with a scale；301- scales；302- square grooves；303- helicitic textures；400-
Bone reduction mechanism；401- main shafts；402- left-handed screws；403- right handed screws；404- joint ball alignment pins；405- joint balls are determined
Position block；406- joint ball locating covers；407- joint balls；408- fix bars；409- draw point fixation kits；409-1 draw point fixed blocks
A；409-2 draw point fixed blocks B；409-3 draw point fixed blocks C；409-4 draw point fixed blocks D；409-5 countershafts；409-6 springs；
1400- benchmark fixed plates；1401- needle holding holes；1402- reference planes；1403- baseline troughs；First draw point with a scale of 300-1；
Second draw point with a scale of 300-2；The 3rd draw point with a scale of 300-3；The 4th draw point with a scale of 300-4；1400-1 first
Block benchmark fixed plate；Second piece of benchmark fixed plate of 1400-2；The 3rd piece of benchmark fixed plate of 1400-3；1600- humerus.
Embodiment
With reference to Figure of description, the utility model is described in further detail：
Bone reduction mechanism of the present utility model as intelligent personalized exoskeleton device a part, with intelligence
Personalized ectoskeleton, draw point with a scale and benchmark fixed plate are used cooperatively, it is possible to achieve precisely resetted, and reduce doctor multiple to fracture
The difficulty and operating time of position；Fixing-stable, holding bone stump that can be stable is on required position, while can guarantee that again
Suffering limb carries out early functional exercise.
Fig. 1 is intelligent personalized ectoskeleton schematic diagram.Intelligent personalized exoskeleton device includes intelligent personalized ectoskeleton
And installation auxiliary device, installation auxiliary device include draw point with a scale, bone reduction mechanism and benchmark fixed plate, draw point with a scale
Coordinated by benchmark fixed plate and bone reduction mechanism and be installed on the corresponding lesions position of intelligent personalized ectoskeleton.
The material that intelligent personalized ectoskeleton 100 is used is enhancing nylon, by main bone matrix 101, auxiliary bone matrix
The locating piece 104 of I102-1, auxiliary bone matrix II102-2 and positioning draw point with a scale is constituted.Main bone matrix 101 is based on disease
Suffer from the threedimensional model design of skeletal sites, obtained using 3D printing technique, engraved structure, can comfortably fit sufferer fracture site,
Stable support function is played to bone, the positioning hole 103 of locating steel needle is provided with, positioning hole correspondence lesions position can be right
The draw point of fix bone plays positioning action；The positioning hole 103 is used for the draw point with a scale through fix bone, and its diameter is big
Small to include the position of draw point with a scale after the position of draw point with a scale before the reduction of the fracture and the reduction of the fracture, the side of positioning hole 103 has
The positioning hole screwed hole 105 of fixed draw point 300 and locating piece 104 with a scale；Auxiliary bone matrix I102-1 and auxiliary bone matrix
II102-2 is the threedimensional model design based on sufferer skeletal sites, obtains, engraved structure, can comfortably paste using 3D printing technique
The combination of syndromes suffers from fracture site, plays a part of stable support to fracture site；It is main bone matrix 101, auxiliary bone matrix I102-1, auxiliary
Fixed between bone matrix II102-2 by bone matrix screwed hole 106.
Fig. 2 is locating piece schematic diagram.Locating piece 104 is cylindrical shape, hollow, fixed for through draw point 300 with a scale
Position block top is pattern structure 140-1, increases frictional force, contributes to hand-held and rotating locating blocks 104, has sideways for fixing band
The locating piece screwed hole 104-2 of scale draw point 300；Locating piece 104 is arranged in positioning hole 103, for positioning draw point with a scale
300 position.
Fig. 3 is draw point schematic diagram with a scale.The front end of draw point 300 with a scale is provided with helicitic texture 303, can effectively anti-stop-band quarter
Spend draw point 300 to slide relative to bone, middle part is provided with square groove 302, is easy to holding screw to fix, draw point with a scale is provided with
Scale 301, with axial positioning function.
Fig. 4-5 is bone reduction structural scheme of mechanism.Bone reduction mechanism 400 includes main shaft 401, left-handed screw 402, dextrorotation
Screw rod 403, joint ball alignment pin 404, joint ball locating piece 405, joint ball locating cover 406, joint ball 407, the and of fix bar 408
Draw point fixation kit 409.
Fig. 6 is main shaft assembling schematic diagram.There is female thread structure in opposite direction at the two ends of main shaft 401, and centre has 4 to be used to wear
The circular hole of arm bar is crossed, main shaft 401 is connected by internal thread with left-handed screw 402 and right handed screw 403.
Fig. 7 is left-handed screw schematic diagram.One end of left-handed screw 402 is screw-rod structure, and hand of spiral is left-handed, with main shaft
401 connections；The other end is to have the circular hole for installing joint ball alignment pin 404 on hollow cylindrical structural, cylindrical structural.
Right handed screw 403 is identical with left-handed screw structure, is symmetricly set on the other end of main shaft.
Fig. 8 is joint ball alignment pin and left-handed screw assembling schematic diagram.The two ends of joint ball alignment pin 404 are cylinder knot
Structure, centre is the slightly smaller eccentric cylinder structure of diameter, and joint ball alignment pin one end has interior hexagonal structure, joint ball alignment pin peace
In the circular hole of left-handed screw；Joint ball alignment pin is installed as left-handed screw in right handed screw, is repeated no more.
Fig. 9 is joint ball locating piece and joint ball assembling schematic diagram.The one end of joint ball locating piece 405 is cylindric concave surface,
The other end is spherical concave surface；Joint ball 407, one end is sphere structure, and the other end is screw-rod structure；Joint ball locating piece 405 is pacified
Inside left-handed screw 402 and right handed screw 403, cylindric concave surface laminating joint ball alignment pin 404, spherical concave surface laminating is closed
Save the spheroid end of ball 407.
Figure 10 is joint ball locating cover and left-handed screw assembling schematic diagram.Joint ball locating cover 406 is hollow cylindric
Structure, joint ball locating cover 406 is provided with the diameter through hole more slightly smaller than the spheroid of joint ball 407, for through the screw rod of joint ball 407
Structure end, joint ball is fixed by screw-rod structure with left-handed screw 402；The assembling of joint ball locating cover and right handed screw with it is left-handed
Screw rod is the same, repeats no more.
Figure 11 is fix bar schematic diagram.Fix bar 408 is cylindrical structure, and one end is female thread structure, with joint ball 407
Screw-rod structure connection, draw point fixation kit 409 be arranged on fix bar 408 on.
Figure 12 is draw point fixation kit schematic diagram.It is solid that draw point fixation kit 409 includes draw point fixed block A 409-1, draw point
Determine block B 409-2, draw point fixed block C 409-3, draw point fixed block D 409-4, countershaft 409-5, spring 409-6.Figure 13 is this
Utility model countershaft schematic diagram, countershaft 409-5 one end is interior hexagonal structure, and the other end is screw-rod structure；Draw point fixed block A
409-1 is one group with draw point fixed block B 409-2 with female thread structure, and installed in countershaft 409-5 screw rod one end, draw point is solid
The circular hole one for determining block A 409-1 and draw point fixed block B 409-2 compositions is inserted in fix bar 408 when in use；Draw point fixed block C
409-3, draw point fixed block D 409-4 are one group, and installed in interior hexagonal structure one end, the circular hole two of composition is inserted in band when in use
Scale draw point 300, spring 409-6 is enclosed on countershaft 409-5, positioned at draw point fixed block B 409-2 and draw point fixed block C 409-3
Between；When countershaft 409-5 rotates, the screw rod end of countershaft drives draw point fixed block A inwardly to move and fixed with draw point by screw thread
Block B, draw point fixed block C 409-3, draw point fixed block D 409-4 are compressed mutually, so as to reach fixed draw point 300 with a scale simultaneously
With the purpose that itself will be fixed in fix bar 408.
When fracture port situation of fracturing is more complicated, such as there is the situation that sawtooth interlocks in Figure 16 humerus 1600, and doctor is free-hand
Reseting fracture bone is relatively difficult, need to carry out bone reduction by bone reduction mechanism 400；Bone reduction mechanism 400 makes
It is as follows with method：Rotating spindle 401, left-handed screw 402 and right handed screw 403 are stretched out toward both sides；Unscrew joint ball alignment pin
404, joint ball 407 can be rotated in 125 ° of cone space, screwed joint ball alignment pin 404, can be locked the fortune of joint ball 407
It is dynamic；Draw point fixed block A 409-1 and draw point fixed block the B 409-2 of draw point fixation kit 409 can do axial direction in fix bar 408
Slide, the draw point with a scale 300 for adapting to different distance, circumferential 360 ° of rotations, draw point fixed block C can be also done around fix bar
409-3 and draw point fixed block D 409-4 can do circumferential 360 ° of rotations around countershaft 409-5, with a scale for adapting to fracture the same side
The relative angle of two draw points with a scale in draw point；Turns auxiliary shaft 409-5, due to countershaft 409-5 and draw point fixed block A
409-1 threadeds, draw point fixed block A 409-1 can promote draw point fixed block B 409-2 inwardly to move, with draw point fixed block C
409-3 and draw point fixed block D 409-4 are compressed mutually, and itself has been fixed on into fix bar while fixed draw point 300 with a scale
On 408.
Fixed plate structure schematic diagram on the basis of Figure 14.Because draw point 300 with a scale is metal material, the meeting in CT scan
Serious metal artifacts are formed, cause draw point 300 with a scale and the position generation close to draw point 300 with a scale during modeling seriously to become
The precision of shape, the influence intelligent personalized ectoskeleton 100 of late design and the reduction of the fracture, so needing by benchmark fixed plate 1400
To remove the influence of metal artifacts.Benchmark fixed plate 1400, is rectangular shape, and centre has for through two of draw point 300
There is the tightening hole for fixing band scale draw point 300 needle holding hole 1401, the side of needle holding hole 1401, and its needle holding hole spacing has 20mm-
The plurality of specifications such as 100mm, are applicable the draw point with a scale 300 of different spacing；The tightening hole side of benchmark fixed plate 1400 has half
Circular reference plane 1402, benchmark fixed plate both sides are equipped with the baseline trough 1403 by the needle holding hole center of circle.
Benchmark fixed plate 1400, material therefor is ABS, and artifact will not be formed during CT scan.
Benefit using benchmark fixed plate 1400 has：1. the influence that draw point artifact with a scale is rebuild to 3D is removed：2. aid in
Doctor puts pin to fracture site；3. preliminary fixed fracture site before operative treatment, mitigates patient's pain.
The operating procedure of intelligent personalized exoskeleton device is as follows：
First, fracture area inserts draw point with a scale：
1. utilizing C arm machine or other operation positioning navigating devices, draw point with a scale is inserted into fracture area, now with noninvasive
The real-time operation positioning navigating device of formula（The patent No. 2013105159221.0）Exemplified by illustrate, make equipment laser spots point to first
It is individual to put pin mark, first draw point 300-1 with a scale is accurately inserted into fracture area bone center；
2. adjustment laser spots point to second and pre-set pin mark, the suitable first piece of benchmark fixed plate 1400-1 of size is chosen
It is inserted on the draw point 300-1 with a scale that step 1 is inserted, rotation reference fixed plate 1400-1, and falls laser spots and is fixed in benchmark
On the center line of plate 1400-1 baseline troughs 1403, now the benchmark fixed plate 1400-1 corresponding position of needle holding hole 1401 is real
Put pin mark, fixed reference fixed plate 1400-1, record benchmark fixed plate 1400-1 is on first draw point 300-1 with a scale
Scale；
3. second draw point 300-2 with a scale is inserted by benchmark fixed plate 1400-1 needle holding hole；
4. repeat step 2-3, installs second piece of benchmark fixed plate 1400-2, inserts the 3rd draw point 300-3 with a scale simultaneously
Record scale；
5. repeat step 2-3, installs the 3rd piece of benchmark fixed plate 1400-3, inserts the 4th draw point 300-4 with a scale simultaneously
Record scale.
2nd, 3D rebuilds being accurately positioned for fracture area and draw point with a scale：
A. CT scan is carried out to the fracture area for inserting draw point 300 with a scale, it is soft that the file after scanning imports three-dimensional reconstruction
Part, to the cutting of fracture area image, three-dimensional reconstruction, software used can be three-dimensional reconstruction software conventional Mimics etc.；
B. on the basis of the fracture model of reconstruction, draw point 300 with a scale is cut off and nearby by the part of artifact effects,
Retain the reference plane 1402 of benchmark fixed plate 1400；
C. the scale recorded according to step 2-5, by 4 draw points 300 with a scale and the 3D models of 3 pieces of benchmark fixed plates 1400
Mutually simulation is installed in a computer, and this 3D model is consistent with actual draw point 300 with a scale and the size of benchmark fixed plate 1400；
D. the draw point with a scale 300 and benchmark fixed plate 1400 relative position worked good imported into the 3D moulds of fracture site
In type, make the base of benchmark fixed plate 1402 formed by the reference plane 1402 and scan rebuilding of the 3D models of benchmark fixed plate 1400
Quasi- face is overlapped, and to replace the part cut off in step b, obtains the exact position of draw point 300 with a scale.
3rd, design and the intelligent personalized ectoskeleton of 3D printing：
1. the model file after three-dimensional reconstruction is imported virtual reset software, such as SolidWorks popular softwares, counterweight by
The three-dimensional fracture model built virtually is resetted；
2. is the main bone matrix 101 of threedimensional model design, the auxiliary bone matrix after virtually resetting in software is virtually resetted
I102-1 and auxiliary bone matrix II102-2；
3. axial location of the draw point 300 with a scale relative to main bone matrix 101 after records reset；
4. will virtually reset designed main bone matrix 101, auxiliary bone matrix I102-1 and auxiliary bone matrix in software
II102-2 models export as common-format files, and main bone matrix 101, auxiliary bone matrix I102- are printed with 3D printing technique
1 and auxiliary bone matrix II102-2,3D printing technique is highly developed, is prior art, will not be repeated here.
4th, ectoskeleton is installed：
I. benchmark fixed plate is removed, main bone matrix 101 is arranged on sufferer corresponding site, draw point 300 with a scale is from master
Passed in the positioning hole 103 of bone matrix 101, auxiliary bone matrix I102-1, auxiliary bone matrix II102-2 are installed successively again, and
It is fastened to each other by bone matrix screwed hole 106；
II. locating piece 104 is inserted on draw point 300 with a scale, now locating piece 104 can not should correctly fall into intelligent individual character
In the positioning hole 103 of outside the pale of civilization bone 100, as shown in figure 17；
III. bone reduction mechanism 400 is fixed on draw point 300 with a scale, cradle head ball alignment pin 404 is locked to close
Ball 407 is saved, turns auxiliary shaft locks draw point 300 with a scale and fix bar 408；
IV. the main shaft 401 of bone reduction mechanism 400 is rotated（If stress can be passed through in the middle of main shaft than larger with boosting-rod
Circular hole is rotated）, left-handed screw 302 and right handed screw 303 are stretched out toward both sides, the knochenbruch position alternating share of fracture are separated；
V. one of joint ball alignment pin 404 is rotated, joint ball 407 is unclamped, fracture site is substantially adjusted manually, makes to break
Bony site is no longer interlocked；
VI. continue to adjust bone reduction mechanism 400, locating piece 104 is correctly pacified and fall into positioning hole 304, such as Figure 18
It is shown, unload bone reduction mechanism 400；
VII. the axial location of the draw point with a scale 300 and main bone matrix 101 that are 3. determined according to step, is adjusted with a scale
The depth of draw point 300, rotating locating blocks 104 make locating piece screwed hole 104-2 be aligned with positioning hole screwed hole 105, screw in spiral shell
Nail, fixed draw point 300 with a scale, completes bone reduction and fixation.
The utility model removes design for the purpose of inside and outside fixed shortcoming to retain inside and outside fixed advantage.Ectoskeleton passes through
3D printing realizes, the design of ectoskeleton then involves the accurate nail, CT thin layer scannings, computer virtual reset, biomethanics put and set
A series of technologies such as meter, are a kind of intelligent personalized customized type solutions for fractures.It can realize minimally invasive, accurate
Reset, strong fixation, the purpose of early recovery limb function.
The utility model can promote 3D printing technique in effective application of medicinal, be expected to progressively replace all kinds of interplantations
Thing, meets clinical personalization, precision, minimally invasiveization, the demand of long-range, promotes Orthopeadic Surgery field to occur qualitative change, and promote 3D
The industries such as printing shoot up.
The utility model is described with reference to its specific embodiment, but it is clear that still can be so that various modification can be adapted
With conversion without departing from spirit and scope of the present utility model.Therefore, specification and drawings be considered as it is illustrative rather than
Restricted, every simple deformation of the present utility model or equivalent transformation, it is considered that fall into protection domain of the present utility model.
Claims (5)
1. a kind of bone reduction mechanism for repair of fractured bones, it is characterised in that including main shaft, be symmetricly set on main shaft both sides
Left-handed screw and right handed screw, right handed screw are identical with the structure of left-handed screw, coordinate on left-handed screw and right handed screw and set
Put joint ball, joint ball alignment pin, joint ball locating piece, joint ball locating cover, fix bar and draw point fixation kit；
The main shaft two ends are provided with female thread structure in opposite direction, and one end of left-handed screw and one end of right handed screw are respectively provided with
There is the external thread structure being engaged with the female thread structure of main shaft, the other end of left-handed screw and the other end of right handed screw are
Hollow cylindrical structural；Cylindrical structural, which is provided with the circular hole for being used for installing joint ball alignment pin, cylindrical structural, to be coordinated
Joint ball locating piece and joint ball are set, and joint ball alignment pin is eccentric structure, and cradle head ball alignment pin can drive joint
Ball locating piece is moved and then locking joint ball, and the end face of cylindrical structural sets the joint ball locating cover of limited location joint ball, is closed
Save ball locating cover and cylindrical structural threaded；One end that joint ball stretches out joint ball locating cover is screw-rod structure, screw rod knot
Structure is engaged with the internal thread of fix bar, and draw point fixation kit is set in fix bar.
2. a kind of bone reduction mechanism for repair of fractured bones according to claim 1, it is characterised in that the joint ball
Alignment pin two ends are cylindrical structure, and it is eccentric cylinder knot that at least one end, which has in the middle of interior hexagonal structure, joint ball alignment pin,
Structure.
3. a kind of bone reduction mechanism for repair of fractured bones according to claim 1, it is characterised in that the joint ball
Locating piece is cylindric concave surface with joint ball alignment pin contact jaw, and joint ball locating piece is spherical concave surface with joint ball contact jaw.
4. a kind of bone reduction mechanism for repair of fractured bones according to claim 1, it is characterised in that the joint ball
Locating cover is hollow cylindrical-shaped structure, be provided with joint ball locating cover the diameter through hole smaller than joint ball be used for through
The screw-rod structure of joint ball.
5. a kind of bone reduction mechanism for repair of fractured bones according to claim 1, it is characterised in that the draw point is consolidated
Determining component includes draw point fixed block A, draw point fixed block B, draw point fixed block C, draw point fixed block D, countershaft and spring；The one of countershaft
Hold as interior hexagonal structure, the other end is screw-rod structure；Draw point fixed block A carries female thread structure, and draw point fixed block A consolidates with draw point
Block B is determined for one group, and installed in screw rod one end of countershaft, the circular hole one of draw point fixed block A and draw point fixed block B compositions can be inserted in
Fix bar；Draw point fixed block C and draw point fixed block D is one group, installed in interior hexagonal structure one end of countershaft, draw point fixed block C
Draw point with a scale can be inserted in the draw point fixed block D circular holes two constituted；Spring is socketed on countershaft, and positioned at draw point fixed block
Between B and draw point fixed block C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621141453.7U CN206518588U (en) | 2016-10-20 | 2016-10-20 | A kind of bone reduction mechanism for repair of fractured bones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621141453.7U CN206518588U (en) | 2016-10-20 | 2016-10-20 | A kind of bone reduction mechanism for repair of fractured bones |
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| Publication Number | Publication Date |
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| CN206518588U true CN206518588U (en) | 2017-09-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109350206A (en) * | 2018-11-07 | 2019-02-19 | 吉林大学 | A kind of Medical hand fracture correction external fixator |
| CN110101445A (en) * | 2019-04-29 | 2019-08-09 | 上海光韵达数字医疗科技有限公司 | A kind of external fixation of fracture brace and its manufacturing method based on 3D printing |
-
2016
- 2016-10-20 CN CN201621141453.7U patent/CN206518588U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109350206A (en) * | 2018-11-07 | 2019-02-19 | 吉林大学 | A kind of Medical hand fracture correction external fixator |
| CN109350206B (en) * | 2018-11-07 | 2019-11-08 | 吉林大学 | A kind of Medical hand fracture correction external fixator |
| CN110101445A (en) * | 2019-04-29 | 2019-08-09 | 上海光韵达数字医疗科技有限公司 | A kind of external fixation of fracture brace and its manufacturing method based on 3D printing |
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