CN110327105A - The bone distraction device of self-locking function can be reconciled with angle - Google Patents
The bone distraction device of self-locking function can be reconciled with angle Download PDFInfo
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- CN110327105A CN110327105A CN201910770814.6A CN201910770814A CN110327105A CN 110327105 A CN110327105 A CN 110327105A CN 201910770814 A CN201910770814 A CN 201910770814A CN 110327105 A CN110327105 A CN 110327105A
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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
- A61B17/66—Alignment, compression or distraction mechanisms
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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
- A61B17/6408—Devices not permitting mobility, e.g. fixed to bed, with or without means for traction or reduction
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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
- A61B17/6425—Devices extending alongside the bones to be positioned specially adapted to be fitted across a bone joint
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- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
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- General Health & Medical Sciences (AREA)
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- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The present invention relates to medical instruments fields, and in particular to a kind of to reconcile the bone distraction device of self-locking function with angle, comprising: stud cylinder, casing, pulley overturning structure, shaft, elastic torsion structure, bull wheel, traction drawstring, traction bow.Traction drawstring one end end is tied up on bull wheel when use, the other end connects traction bow, and by the fixed bundle of traction bow at patient's ankle.Handwheel is rotated, handwheel drives the rotation of the second worm screw, and the second worm screw drives the rotation of the second worm gear, and the second worm gear drives shaft rotation by second sleeve and torsional spring, so that bull wheel rotation carries out elastic adjusting to traction drawstring.Pass through turning knob, knob drives the rotation of the first worm screw, allow turning knob that pulley overturning structure is carried out rotation adjustment around the first worm gear, the height of pulley can be adjusted after rotation adjustment, traction drawstring control traction bow can be made to be adjusted at patient's ankle to suitable traction angle, it is easy to operate, it is convenient and practical.
Description
Technical field
The present invention relates to medical instruments field, the orthopaedics of self-locking function can be reconciled with angle in particular to a kind of
Traction device.
Background technique
Traction is a kind of common treatment method of orthopaedics, is by traction device, is tractive force, body using the weight of pendency
Body weight is reverse drag power, to alleviate muscular tone and strong contraction, reduction fracture, dislocation, prevention and correction soft tissue contracture,
And to a kind of preoperative treatment method for organizing to loosen with postoperative braking of certain diseases.Bone traction is extremely important in traction technique
One kind, also known as directly draw, be to pass through sclerotin using steel needle or traction tongs, tractive force is made directly to arrive at damage by bone
Traumatic part position, and play the role of reset, fixation and rest.
When hospital medical staff carries out Bone traction to Patients with Fractures of Lower Limbs, fixation is arranged on the hospital bed frame of hospital bed tail portion
Hitch frame installs the fixed pulley set being fixed by ejector pin on hitch frame, and traction drawstring is drawn around fixed pulley and in traction
Tail of rope end is fixed with sliding weight of steelyard counterweight and provides tractive force to patient by the hanging of gravity nature and by traction drawstring.But exist at present
Following defect is found in clinical use:
Firstly, simple covered fixed pulley by ejector pin realizes that the fixation on flip angle is on the smooth tubular type cross bar in surface
Unstable, ejector pin contact area when the rail surface of tubular type is shored is very little, and it is fixed that fixed pulley covers the flip angle on cross bar
It is easily loosened when position, if appearance loosens the traction position being easy to patient suddenly and pulls to form dislocation, to the peace of patient
There is great hidden danger entirely.
Second, it is easy to appear wiggly feelings during hanging by the sliding weight of steelyard counterweight of nature hanging for tractive force
Condition, it is suddenly big or suddenly small unstable to will cause tractive force during sliding weight of steelyard counterweight waves, and influences traction effect, and be suspended in bed
The people that tail is easy to be walked up and down encounters, and sliding weight of steelyard counterweight may be made to fall off or draw drawstring from calmly if collision dynamics is larger
Fall off on pulley, cause patient to draw failure and even cause secondary injury, if while sliding weight of steelyard counterweight fall off may be to other people
Instep formation injures by a crashing object.
Third, each fixed pulley set, which needs to turn over to go to when other angles are fixed in cross bar, to be required first to unclamp ejector pin, so
Fixed pulley set is firmly grasped afterwards turning to proper angle and be finally tightened again ejector pin, whole process is troublesome, needs to expend big
The time of amount, and need medical staff to firmly grasp fixed pulley set when unclamping ejector pin, but since the weight of sliding weight of steelyard counterweight is big,
The pulling force that medical staff's palm when ejector pin is fixed needs to bear sliding weight of steelyard farad is loosened suddenly, it is easy to phenomenon of slipping out of the hand occurs, to trouble
Person also has very big security risk.
4th, the big minor adjustment of tractive force by increase and decrease sliding weight of steelyard counterweight quantity realize, can only staged adjust tractive force it is big
It is small, it can not achieve and needed to carry out tractive force step-less adjustment according to patient itself.
Summary of the invention
To solve the above problems, the purpose of the present invention is to provide one kind can carry out tractive force step-less adjustment have angle
It can reconcile the bone distraction device of self-locking function.
The purpose of the present invention is what is be achieved through the following technical solutions:
It is provided by the invention a kind of to reconcile the bone distraction device of self-locking function with angle, comprising: stud cylinder, casing, cunning
Wheel overturning structure, shaft, elastic torsion structure, bull wheel, traction drawstring, traction bow；The quantity of stud cylinder is two, and two vertical
Column casing height is adjustably mounted on two columns of hospital bed；Casing is arranged in two stud cylinders, and shaft can be rotatably set
Lower part in two stud cylinders and positioned at casing；Pulley overturn structure quantity be it is multiple, multiple pulleys overturning structures are arranged
On casing；
Pulley overturning structure include: first sleeve, first shell, deep groove ball bearing, the first worm screw, the first worm gear, thrust bearing,
Knob, pulley yoke, pulley；First sleeve is set on casing, and the first worm screw, the first worm gear are arranged after being meshed in first shell
Interior, first shell is set in first sleeve by deep groove ball bearing, and the fixation of the first worm gear is set in first sleeve, the first snail
It is arranged with thrust bearing on the worm shaft of the first worm screw between the end face and first shell of bar and thrust bearing is arranged first
On the inner wall of shell, one end of the first worm screw is stretched out outside first shell to be connect with knob, and first shell lower part is connected with pulley yoke,
Pulley is provided on pulley yoke；
Elastic torsion structure includes: second sleeve, second shell, the second worm screw, the second worm gear, thrust bearing, handwheel, torsional spring；
Second sleeve is set in shaft, and the second worm screw, the second worm gear are arranged in second shell after being meshed, and second shell fixation is set
It sets in stud cylinder, the fixation of the second worm gear is set in second sleeve, second between the end face and second shell of the second worm screw
It is arranged with thrust bearing on the worm shaft of worm screw and thrust bearing is arranged on the inner wall of second shell, one end of the second worm screw is stretched
Second shell is outer out connect with handwheel, and second sleeve, which is extended, to be connect outside second shell with one end of torsional spring, and torsional spring, which is set in, to be turned
On axis and the other end is connect with shaft；
The quantity of bull wheel be it is multiple, multiple bull wheels are set in shaft, draw the one ends wound of drawstring on bull wheel, separately
One end connect around pulley with traction bow.
Further, the both ends of bull wheel are provided with bull wheel baffle ring, wherein card rope groove is offered on a bull wheel baffle ring,
Draw drawstring one ends wound on bull wheel after be fixed in card rope groove.
Further, bull wheel and shaft feather key are socketed, and are provided on bull wheel for holding out against the ejector pin at feather key.
Further, which further includes shaft, and shaft is telescopically disposed in casing, casing and shaft sliding key sleeve
It connects, is provided on casing for holding out against the ejector pin at feather key；Shaft rod upper sleeve is equipped with multiple pulleys and overturns structure.
Further, the first sleeve in pulley overturning structure and shaft feather key are socketed, and are provided with and are used in first sleeve
Hold out against the ejector pin at feather key.
Further, which further includes two the first fixed frames, and the first fixed frame is that vertical sleeve is connected by floor
There is horizontal bush, vertical sleeve height is adjustably set in stud cylinder, is arranged with casing in two horizontal bush.
Further, horizontal bush and casing feather key are socketed, and are provided on horizontal bush for holding out against the top at feather key
Pin.
Further, first sleeve and casing feather key are socketed, and are provided in first sleeve for holding out against the top at feather key
Pin；It is provided with sleeve baffle ring on the barrel of one end of first sleeve, circlip groove, peace in circlip groove are offered on the barrel of the other end
Equipped with retaining ring.
Further, driving baffle ring is provided in shaft, the other end of torsional spring is connect with driving baffle ring.
Further, which further includes two the second fixed frames, is arranged with shaft in two the second fixed frames.
Of the invention to reconcile the bone distraction device of self-locking function with angle, the adjustment present apparatus first is vertical when use
Height on column.Then according to needed at patient's lower limb ankle the actual conditions of distracted position along axially adjustable pulley overturning structure and
The position of bull wheel.Tieing is fastened into traction drawstring one end end and is stuck on bull wheel, then will draw drawstring in bull wheel
It is pulled upwardly on rear side of pulley after upper several circles of winding and extends connection traction bow forward around pulley, and traction bow is fixed and is pricked
At patient's ankle.Handwheel is rotated, handwheel drives the rotation of the second worm screw, and the second worm screw drives the rotation of the second worm gear, and the second worm gear is logical
It crosses second sleeve and torsional spring drives shaft rotation, so that bull wheel rotation carries out elastic adjusting to traction drawstring.It is revolved by rotation
Button, knob drive the rotation of the first worm screw, and because the first worm gear can not rotate, allow turning knob that pulley is overturn structure
Rotation adjustment is carried out around the first worm gear, the height of pulley can be adjusted after rotation adjustment, can to draw drawstring control
Traction bow processed is adjusted at patient's ankle to suitable traction angle, easy to operate, convenient and practical.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is that there is the present invention angle can reconcile a kind of usage state diagram of angle of bone distraction device of self-locking function；
Fig. 2 be the present invention have angle can reconcile self-locking function bone distraction device another kind angle usage state diagram；
Fig. 3 is that there is the present invention angle can reconcile a kind of structure chart of angle of bone distraction device of self-locking function；
Fig. 4 be the present invention have angle can reconcile self-locking function bone distraction device another kind angle structure chart；
Fig. 5 be the present invention have angle can reconcile self-locking function bone distraction device in the first fixed frame structure chart；
Fig. 6 be the present invention have angle can reconcile self-locking function bone distraction device middle pulley overturning a kind of knot of angle of structure
Composition；
Fig. 7 be the present invention have angle can reconcile self-locking function bone distraction device middle pulley overturning structure another kind angle
Structure chart；
Fig. 8 be the present invention have angle can reconcile self-locking function bone distraction device in first shell cutaway view；
Fig. 9 be the present invention have angle can reconcile self-locking function bone distraction device in elastic torsion structure structure chart；
Figure 10 be the present invention have angle can reconcile self-locking function bone distraction device in elastic torsion structure cutaway view；
Figure 11 be the present invention have angle can reconcile self-locking function bone distraction device in bull wheel structure chart；
Wherein appended drawing reference are as follows: 1, stud cylinder；2, casing；3, shaft；4, bull wheel；5, drawstring is drawn；6, traction bow；7, first
Sleeve；8, first shell；9, the first worm screw；10, the first worm gear；11, thrust bearing；12, knob；13, pulley yoke；14, pulley；
15, second sleeve；16, second shell；17, the second worm screw；18, the second worm gear；19, handwheel；20, torsional spring；21, rope rolling catch
Ring；22, card rope groove；23, shaft；24, the first fixed frame；25, retaining ring；26, baffle ring is driven；27, the second fixed frame；28, cross bar.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
As shown in Fig. 1 to 11, a kind of of the embodiment of the present invention can reconcile the bone distraction device of self-locking function with angle,
It include: stud cylinder 1, casing 2, pulley overturning structure, shaft 3, elastic torsion structure, bull wheel 4, traction drawstring 5, traction bow 6；
The quantity of stud cylinder 1 is two, and two 1 height of stud cylinder are adjustably mounted on two columns of hospital bed；Casing 2 is arranged two
In a stud cylinder 1, shaft 3 is rotatably arranged in the lower part in two stud cylinders 1 and being located at casing 2；Pulley overturns structure
Quantity be it is multiple, multiple pulleys overturning structures are set on casing 2；
It includes: first sleeve 7, first shell 8, deep groove ball bearing, the first worm screw 9, the first worm gear 10, thrust that pulley, which overturns structure,
Bearing 11, knob 12, pulley yoke 13, pulley 14；First sleeve 7 is set on casing 2, and the first worm screw 9,10 phase of the first worm gear are nibbled
It is arranged in first shell 8 after conjunction, first shell 8 is set in first sleeve 7 by deep groove ball bearing, and the first worm gear 10 is fixed
It is set in first sleeve 7, is arranged with and pushes away on the worm shaft of the first worm screw 9 between the end face and first shell 8 of the first worm screw 9
Power bearing 11 and thrust bearing 11 is arranged on the inner wall of first shell 8, one end of the first worm screw 9 stretch out first shell 8 it is outer with
Knob 12 connects, and 8 lower part of first shell is connected with pulley yoke 13, pulley 14 is provided on pulley yoke 13；
Elastic torsion structure include: second sleeve 15, second shell 16, the second worm screw 17, the second worm gear 18, thrust bearing 11,
Handwheel 19, torsional spring 20；Second sleeve 15 is set in shaft 3, and the second worm screw 17, the second worm gear 18 are arranged after being meshed second
In shell 16, second shell 16 is fixed in stud cylinder 1, and the fixation of the second worm gear 18 is set in second sleeve 15, and second
Thrust bearing 11 and thrust bearing are arranged on the worm shaft of the second worm screw 17 between the end face and second shell 16 of worm screw 17
11 are arranged on the inner wall of second shell 16, and one end of the second worm screw 17 is stretched out outside second shell 16 to be connect with handwheel 19, and second
Sleeve 15 extends that second shell 16 is outer to be connect with one end of torsional spring 20, and torsional spring 20 is set in shaft 3 and the other end and shaft 3
Connection；
The quantity of bull wheel 4 be it is multiple, multiple bull wheels 4 are set in shaft 3, draw drawstring 5 one ends wound in bull wheel 4
On, the other end connect around pulley 14 with traction bow 6.
Of the invention to reconcile the bone distraction device of self-locking function with angle, the adjustment present apparatus first is vertical when use
Height on column.Then according to needed at patient's lower limb ankle the actual conditions of distracted position along axially adjustable pulley overturning structure and
The position of bull wheel 4.Tieing is fastened into traction 5 one end end of drawstring and is stuck on bull wheel 4, is then rolling up traction drawstring 5
14 rear side of pulley is pulled upwardly to after winding several circles on rope sheave 4 and extends connection traction bow 6 forward around pulley 14, and will traction
Bow 6 is fixed to be pricked at patient's ankle.Handwheel 19 is rotated, handwheel 19 drives the rotation of the second worm screw 17, and the second worm screw 17 drives second
Worm gear 18 rotates, and the second worm gear 18 drives shaft 3 to rotate by second sleeve 15 and torsional spring 20, so that the rotation of bull wheel 4 is to leading
The rope 5 that is pulled carries out elastic adjusting.By turning knob 12, knob 12 drives the rotation of the first worm screw 9, and because 10 nothing of the first worm gear
Method rotation allows turning knob 12 that pulley overturning structure is carried out rotation adjustment around the first worm gear 10, can after rotation adjustment
The height of pulley 14 to be adjusted, traction drawstring 5 can be made to control traction bow 6 and adjusted at patient's ankle to suitable
Traction angle, it is easy to operate, it is convenient and practical.
The both ends of bull wheel 4 are provided with bull wheel baffle ring 21 as a preferred technical solution, wherein a bull wheel baffle ring 21
On offer card rope groove 22, be fixed in card rope groove 22 after drawing the one ends wound of drawstring 5 on bull wheel 4.
It is axially disposed in the shaft 3 of driving 26 back segment of baffle ring to have shaft guide groove, in the shaft 3 of shaft guide groove section
Upper feather key is socketed with two groups of bull wheels 4, and two groups of bull wheels 4 are corresponding in the axial direction with the pulley of top overturning structure,
The bull wheel baffle ring 21 of protrusion is provided on bull wheel 4 close to two side positions, bull wheel baffle ring 21 is used for in 4 race of bull wheel
The traction drawstring 5 in portion plays the role of limit and prevents from slipping.Be provided on the bull wheel baffle ring 21 of wherein side be provided with it is open-minded
The card rope groove 22 of mouth, the curved arc-shaped of card rope groove 22 are provided with certain length on bull wheel baffle ring 21, so that traction drawstring 5
End can be stuck in card rope groove 22.
Bull wheel 4 and 3 feather key of shaft are socketed as a preferred technical solution, are provided on bull wheel 4 for holding out against in cunning
Ejector pin at key.
There is bull wheel jag in the design axially outside of the wherein side bull wheel baffle ring 21 of bull wheel 4, bull wheel is prominent
It is provided with the 6th ejector pin that can be threadedly engaged connection in outlet, sliding is provided on 4 inner wall of bull wheel in the volume of shaft guide groove
The shaft of rope sheave guide pad, the 6th ejector pin towards interior face shaft 3 is oriented to groove location, so that internally screw in can be with for the 6th ejector pin
Detent allows bull wheel 4 to keep relatively fixed with shaft 3 in shaft guide groove.Traction drawstring 5 twines on bull wheel 4
It is bypassed on the remaining part later from the upper side pulley 14 of corresponding pulley overturning structure, in the rear end end of traction drawstring 5
There is traction bow 6 in fixed system, place, and traction bow 6 is prior art construction, does not do specific narration herein.
The device further includes shaft 23 as a preferred technical solution, and shaft 23 is telescopically disposed in casing 2, set
Pipe 2 and 23 feather key of shaft are socketed, and are provided on casing 2 for holding out against the ejector pin at feather key；Multiple cunnings are arranged on shaft 23
Wheel overturning structure.
It is provided with the through-hole with casing guide pad in the axial direction at 2 axle center of casing, shaft 23 is socketed with inside through-hole,
Shaft 23 is axially disposed to have shaft guide groove that can coincide with through-hole inner sleeve guide pad, and feather key cooperation socket is so that casing
2 will not relatively rotate with shaft 23.Threaded engagement has the 4th ejector pin on leaning on 2 tube wall of casing at proximal port simultaneously, the
Four ejector pins generally L-type, the bending of the 4th ejector pin of L-type, which screws, to be entered and can play locking effect to the shaft of shaft 23 guiding groove location
Fruit is by shaft 23 and the relatively stable fixation of casing 2.
The first sleeve 7 in pulley overturning structure and 23 feather key of shaft are socketed as a preferred technical solution, first sleeve
It is provided on 7 for holding out against the ejector pin at feather key.
Pulley overturning structure is equally fixed on the shaft 23 to stretch inside 2 two sides of casing, for other portions of patient
It is drawn position.
The device further includes two the first fixed frames 24 as a preferred technical solution, and the first fixed frame 24 is vertical set
Cylinder is connected with horizontal bush by floor, and vertical sleeve height is adjustably set in stud cylinder 1, is arranged in two horizontal bush
Casing 2.
It is cased with the first fixed frame 24 respectively in two stud cylinders 1 in left and right, and the first fixed frame 24 in two stud cylinders 1
Always it is in identical height, fixed frame card hole is provided on the first fixed frame 24 and is uniformly distributed in stud cylinder 1 along axial direction
1 card hole of stud cylinder adjusted by the way that the second ejector pin detent is fixed with height.First fixed frame, 24 structure is that vertical sleeve passes through
Floor is fixedly connected with the horizontal bush of horizontality.Same root water is cased with inside the horizontal bush of two the first fixed frames 24
The casing 2 of level state.
Horizontal bush and 2 feather key of casing are socketed as a preferred technical solution, are provided on horizontal bush for holding out against
Ejector pin at feather key.
There is casing guide groove 2 tube wall of casing is axially disposed, the horizontal bush of the first fixed frame 24 corresponds to the set of casing 2
Horizontal bush guide pad is provided at pipe guide groove, so that the horizontal bush of the first fixed frame 24 and casing 2 constitute feather key socket
Structure will not relatively rotate.The casing guiding groove location setting of casing 2 is corresponded on the horizontal bush of the first fixed frame 24
There is the third ejector pin of threaded engagement, third ejector pin screws solid to clamping at the casing guide groove of casing 2 inside insertion horizontal bush
It is fixed, use third ejector pin shore to inside casing guide groove rather than the tube wall reason of casing 2 is 2 tube wall of casing for circular arc camber
Shape, third ejector pin are not easy clamping, are shored using third ejector pin to can make casing 2 and first fixed inside casing guide groove
Frame 24 more stably keeps relatively fixed.
First sleeve 7 and 2 feather key of casing are socketed as a preferred technical solution, are provided in first sleeve 7 for holding out against
Ejector pin at feather key；It is provided with sleeve baffle ring on the barrel of one end of first sleeve 7, offers retaining ring on the barrel of the other end
Slot is equipped with retaining ring 25 in circlip groove.
Two groups of pulley overturning structures are socketed on the casing 2 of two 24 interludes of the first fixed frame, pulley overturns structure
On first sleeve 7 and casing 2 be socketed, 7 inner wall of first sleeve has equally been provided projectingly 7 guide pad of first sleeve and corresponded to casing 2
Casing guide groove formed feather key cooperation socket so that first sleeve 7 can only slide axially relative to casing 2.First
Sleeve knock hole is again provided on sleeve 7, it is solid to carry out detent convenient for casing guiding groove location of the 5th ejector pin insertion to casing 2
It is fixed, so that whole device structure can guarantee the stationary state of pulley overturning structure when in use.
The outer layer that pulley overturns structure is first shell 8, and first shell 8 is set in first sleeve 7 by deep groove ball bearing
Periphery first shell 8 is flexibly rotated relative to first sleeve 7, and the end of the wherein one end of first sleeve 7
The retaining ring 25 of cutting ferrule is simultaneously to 8 two sides of first shell inside 7 other end circlip groove of sleeve baffle ring and first sleeve of circumferential protrusion
It clamps, so that first shell 8 will not be moved axially relative to first sleeve 7.
Driving baffle ring 26, the other end and driving baffle ring 26 of torsional spring 20 are provided in shaft 3 as a preferred technical solution,
Connection.
There is second sleeve 15 certain 15 1 end face of wall thickness and second sleeve to extend second shell 16, along axial distance
Being fixed as one in the shaft 3 of 15 certain distance of second sleeve has driving baffle ring 26, between second sleeve 15 and driving baffle ring 26
3 upper joint sleeve of shaft have torsional spring 20, when the second worm gear 18 drive second sleeve 15 rotate when, second sleeve 15 can pass through torsion
Spring 20 drives driving baffle ring 26 and shaft 3 to rotate, and torsional spring 20 is whole thicker, can only carry out subtle circumference under stress effect
Wrench deformation.
The device further includes two the second fixed frames 27, two 27 inner sleeves of the second fixed frame as a preferred technical solution,
Equipped with shaft 3.
It is fixed with the second fixed frame 27 in the stud cylinder 1 of 24 following distance position of the first fixed frame, two second
27 height of fixed frame is consistent, is covered with shaft 3 on two the second fixed frames 27, prevent shaft 3 is from fixed relative to second
Frame 27 moves axially but opposite rotation can occur.
Specifically, the device is mainly used for the patients to fracture of lower limb to carry out lower limb traction.The stud cylinder 1 of the present apparatus is socketed
In the column (not shown) fixed vertically at hospital bed tailstock, column is erect respectively at the tailstock of hospital bed or so and fixes one
It is a.Several horizontal cross bars 28 are fixedly connected in distribution up and down between two stud cylinders 1 being sheathed on column to have formed
Whole hitch frame, stud cylinder 1 correspond to the corresponding stud cylinder 1 that is provided on its barrel at several relief holes that column is distributed up and down and push up
Pin hole, 1 knock hole of stud cylinder by the first ejector pin be passed through detent the relative altitude of hitch frame and column can be adjusted with
It is fixed.
The first worm gear 10, cooperation the first worm gear 10 engagement are coaxially fixed in first sleeve 7 inside first shell 8
Have the first worm screw 9, first shell 8 is extended at the worm shaft both ends of the first worm screw 9, and is coaxially fixed on the end extended
It is provided with knob 12, the worm screw between 8 inside 9 both sides of the face of the first worm screw of first shell and 8 respective side inner wall of first shell
Thrust bearing 11(thrust ball bearing, thrust roller bearing are cased on axis), thrust bearing 11 can make the first worm screw 9 first
It will not be loosened along axial inside shell 8.When turning knob 12 drives the first worm screw 9 to rotate synchronously, because of worm and gear
Meshing relation, the first worm screw 9 can make the first worm gear 10 rotate relative to the first worm screw 9 when rotating, and because the
One worm gear 10 is coaxially fixed with first sleeve 7, so the first worm gear 10 will not rotate, drives the first worm screw 9 in knob 12
When rotation, the first worm screw 9 drives first shell 8 is whole to rotate centered on 10 axis of the first worm gear by worm shaft.Simultaneously again
Because worm gear structure has self-locking performance, certain angle is turned to around 10 periphery of the first worm gear when first shell 8 is whole
When stop operating knob 12, can make the first worm screw 9 that first shell 8 be driven to keep stablizing static shape in angle engagement
State.Fixed pulley structure is fixedly connected on the bottom surface of first shell 8, fixed pulley structure includes pulley yoke 13 and the dynamic connection of hinge
Pulley 14.Two groups of pulleys overturning structure on 2 sections of casing between two the first fixed frames 24 is above structure.
The second snail is coaxially cased with by second sleeve 15 on 3 section of one side position of shaft between two the second fixed frames 27
Wheel 18.Second worm gear 18 is coaxially fixedly attached with second sleeve 15, and second sleeve 15 and shaft 3 are pivot bush unit, so that shaft 3
Rotation can occur relative to second sleeve 15.The second worm screw 17 is engaged on second worm gear 18, in the second worm gear 18 and second
It is provided with second shell 16 outside worm screw 17 and carries out package and by the cross bar 28 of the corresponding position of second shell 16 by second
Fixed frame 27 is fixedly connected, and the worm shaft front end of the second worm screw 17 is stretched out second shell 16 and is fixedly connected in worm shaft end
Handwheel 19, in 17 front and back sides of the second worm screw to same on the worm shaft between its corresponding 16 inside front and back sides of second shell
It is cased with thrust bearing 11(thrust ball bearing, thrust roller bearing), it acts on identical as 8 inertial thrust bearing 11 of first shell.
When needing to carry out traction therapeutic to patient's lower limb, height of the present apparatus on column is adjusted first, and according to trouble
The body size of person adjusts the height of the first fixed frame 24, and adjustment is fixed after completing by the second ejector pin detent.Then basis
The actual conditions of distracted position are needed to adjust at patient's lower limb ankle along the position of axially adjustable pulley overturning structure and bull wheel 4
Whole finish later respectively is tightened to it with the 6th ejector pin by the 5th ejector pin.Traction 5 one end end of drawstring is fastened
Tieing and being stuck in inside the card rope groove 22 of bull wheel 4, which to draw 5 one end of drawstring, to be fixed, then will traction drawstring 5 in bull wheel 4
It is pulled upwardly to 14 rear side of pulley after upper several circles of winding and extends connection traction bow 6 forward around pulley 14, and traction bow 6 is consolidated
It is fixed to prick at patient's ankle.Handwheel 19 is rotated, handwheel 19 drives the rotation of the second worm screw 17, and the second worm screw 17 drives the second worm gear 18
Rotation, the second worm gear 18 drives driving baffle ring 26 and shaft 3 to rotate by second sleeve 15 and torsional spring 20, so that 4 turns of bull wheel
It is dynamic that elastic adjusting is carried out to traction drawstring 5.By turning knob 12, knob 12 drives the rotation of the first worm screw 9, and because the first snail
Wheel 10 can not rotate, and allow turning knob 12 that pulley overturning structure is carried out rotation adjustment around the first worm gear 10, rotation is adjusted
The height of fixed pulley structure can be adjusted after whole, can to draw the control tune at patient's ankle of traction bow 6 of drawstring 5
Whole to suitable traction angle.
Innovative technology point of the invention and beneficial effect at least that:
1. pulley overturns structure and uses worm gear structure, and when the first worm gear 10 is motionless first worm screw 9 around the first worm gear 10 circle
Week rotation drives whole first shell 8 to rotate with fixed pulley structure.Worm and gear has latching characteristics, can be realized and stops to lock
Effect, enable first shell 8 and angle that fixed pulley structure remains after one-directional rotation that angle will not occur is sliding
It moves.The first worm gear 10 carries out the cunning of feather key connection and casing 2 and the first fixed frame 24 by first sleeve 7 and casing 2 simultaneously
Key connection can enable pulley overturning structure to remain stable state, compared to relatively existing technical solution will at present
14 nested structure of fixed pulley, which passes through merely ejector pin and screws, to carry out angle to smooth casing 2 and fixes, and current detent fixed form makes
It obtains and easily causes slip phenomenon under the pressure of traction drawstring 5, so that 14 sets of fixed pulley of flip angle not can guarantee stability.
The pulley overturning structure of the technical program can be always ensured that pulley turns over using the connection type that guide groove is formed with worm and gear
The overturning of rotation structure is to stability at any angle.Simultaneously the i.e. controllable worm and gear of turning knob 12 make pulley overturn structure into
Row overturning, has great convenience, need to unclamp and screw ejector pin repeatedly to fixed without 14 sets of the fixed pulley as existing hitch frame
The overturning adjustment of 14 sets of pulley progress angles.
2. the elastic torsion structure of the technical program rotates control torsional spring 20 by worm and gear and drives shaft 3 and bull wheel
4 rotate synchronously, and the latching characteristics of worm and gear can control shaft 3 and bull wheel 4 and stop to lock, while stopping locking shortly
Torsional spring 20 makes bull wheel 4 have certain elastic buffer surplus, allows the lower limb of patient to have slight activity surplus, makes
It obtains and traction bow 6 is made to draw position slippage to patient when patient's lower limb are unlikely to inadvertently movable.
3. twisted rope wheel is fixed by 22 pairs of 5 one end of traction drawstring of card rope groove, it is right to wind traction drawstring 5 by twisted rope wheel
Traction drawstring 5 is tensed, and can draw the pulling force of drawstring 5 with flexible modulation by degrees of tensions.Compared to more current medical care
Personnel are by providing for pulling force the traction bow 6 of patient vertical sagging be hooked on traction drawstring 5 of sliding weight of steelyard counterweight, originally
The tractive force of technical solution can flexible in the light of actual conditions step-less adjustment, while the technical program is wound not by bull wheel 4
Can there is a situation where sliding weight of steelyard counterweights to wave in vertical sagging hooking, the entire cinching process that draws has very strong stabilization
Property.
4. the structure of above-mentioned each feather key socket use simultaneously carry out screwing detent at the guide groove of the internal nested structure of ejector pin it is solid
It is fixed, it can guarantee to be fixed while feather key socket to axial.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of can reconcile the bone distraction device of self-locking function with angle characterized by comprising stud cylinder, casing, cunning
Wheel overturning structure, shaft, elastic torsion structure, bull wheel, traction drawstring, traction bow；The quantity of the stud cylinder be two, two
A stud cylinder height is adjustably mounted on two columns of hospital bed；Described sleeve pipe is arranged in two stud cylinders,
The shaft is rotatably arranged in the lower part in two stud cylinders and being located at described sleeve pipe；The pulley overturning structure
Quantity be it is multiple, multiple pulleys overturning structures are set in described sleeve pipe；
The pulley overturning structure includes: first sleeve, first shell, deep groove ball bearing, the first worm screw, the first worm gear, thrust
Bearing, knob, pulley yoke, pulley；The first sleeve is set in described sleeve pipe, and first worm screw, the first worm gear are mutually nibbled
It is arranged in the first shell after conjunction, the first shell is set in the first sleeve by the deep groove ball bearing,
The first worm gear fixation is set in the first sleeve, the institute between the end face and the first shell of first worm screw
It states and is arranged with the thrust bearing on the worm shaft of the first worm screw and the inner wall of the first shell is arranged in the thrust bearing
On, one end of first worm screw is stretched out outside the first shell to be connect with the knob, and the first shell lower part is connected with
The pulley yoke is provided with the pulley on the pulley yoke；
The elastic torsion structure includes: second sleeve, second shell, the second worm screw, the second worm gear, thrust bearing, handwheel, torsion
Spring；The second sleeve is set in the shaft, and second worm screw, the second worm gear are arranged after being meshed in the second shell
In vivo, the second shell is fixed in the stud cylinder, and the second worm gear fixing sleeve is arranged on the second sleeve,
The thrust axis is arranged on the worm shaft of second worm screw between the end face and the second shell of second worm screw
It holds and the thrust bearing is arranged on the inner wall of the second shell, the second shell is stretched out in one end of second worm screw
It is connect outside with the handwheel, the second sleeve, which is extended, to be connect outside the second shell with one end of the torsional spring, the torsion
Spring is set in the shaft and the other end is connect with the shaft；
The quantity of the bull wheel be it is multiple, multiple bull wheels are set in the shaft, it is described traction drawstring one end
It is wrapped on the bull wheel, the other end connect around the pulley with the traction bow.
2. according to claim 1 can reconcile the bone distraction device of self-locking function with angle, which is characterized in that described
The both ends of bull wheel are provided with bull wheel baffle ring, wherein offering card rope groove, the traction drawstring on a bull wheel baffle ring
One ends wound on the bull wheel after be fixed in the card rope groove.
3. according to claim 1 can reconcile the bone distraction device of self-locking function with angle, which is characterized in that described
Bull wheel and the shaft feather key are socketed, and are provided on the bull wheel for holding out against the ejector pin at feather key.
4. according to claim 1 can reconcile the bone distraction device of self-locking function with angle, which is characterized in that described
Device further includes shaft, and the shaft is telescopically disposed in described sleeve pipe, and described sleeve pipe and the shaft feather key are socketed, institute
It states and is provided on casing for holding out against the ejector pin at feather key；The shaft rod upper sleeve is equipped with multiple pulleys and overturns structure.
5. according to claim 4 can reconcile the bone distraction device of self-locking function with angle, which is characterized in that described
Pulley overturns the first sleeve and shaft feather key socket in structure, is provided in the first sleeve for holding out against
Ejector pin at feather key.
6. according to claim 1 can reconcile the bone distraction device of self-locking function with angle, which is characterized in that described
Device further includes two the first fixed frames, and first fixed frame is connected with horizontal bush by floor for vertical sleeve, described
Vertical sleeve height is adjustably set in the stud cylinder, is arranged with described sleeve pipe in two horizontal bush.
7. according to claim 6 can reconcile the bone distraction device of self-locking function with angle, which is characterized in that described
Horizontal bush and described sleeve pipe feather key are socketed, and are provided on the horizontal bush for holding out against the ejector pin at feather key.
8. according to claim 1 can reconcile the bone distraction device of self-locking function with angle, which is characterized in that described
First sleeve and described sleeve pipe feather key are socketed, and are provided in the first sleeve for holding out against the ejector pin at feather key；Described
It is provided with sleeve baffle ring on the barrel of one end of one sleeve, circlip groove, peace in the circlip groove are offered on the barrel of the other end
Equipped with retaining ring.
9. according to claim 1 can reconcile the bone distraction device of self-locking function with angle, which is characterized in that described
Driving baffle ring is provided in shaft, the other end of the torsional spring is connect with the driving baffle ring.
10. according to claim 1 can reconcile the bone distraction device of self-locking function with angle, which is characterized in that institute
Stating device further includes two the second fixed frames, is arranged with the shaft in two second fixed frames.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910770814.6A CN110327105A (en) | 2019-08-20 | 2019-08-20 | The bone distraction device of self-locking function can be reconciled with angle |
| CN202010403760.2A CN111358542A (en) | 2019-08-20 | 2020-05-13 | Orthopedics traction device with adjustable contained angle and self-locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910770814.6A CN110327105A (en) | 2019-08-20 | 2019-08-20 | The bone distraction device of self-locking function can be reconciled with angle |
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| Publication Number | Publication Date |
|---|---|
| CN110327105A true CN110327105A (en) | 2019-10-15 |
Family
ID=68149969
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910770814.6A Pending CN110327105A (en) | 2019-08-20 | 2019-08-20 | The bone distraction device of self-locking function can be reconciled with angle |
| CN202010403760.2A Pending CN111358542A (en) | 2019-08-20 | 2020-05-13 | Orthopedics traction device with adjustable contained angle and self-locking function |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010403760.2A Pending CN111358542A (en) | 2019-08-20 | 2020-05-13 | Orthopedics traction device with adjustable contained angle and self-locking function |
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| CN (2) | CN110327105A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111035490A (en) * | 2019-12-27 | 2020-04-21 | 靳彩霞 | Orthopedics draw gear |
| CN112841973A (en) * | 2021-04-08 | 2021-05-28 | 栗豪豪 | Office chair capable of being used for leg training |
| CN113208864A (en) * | 2021-04-13 | 2021-08-06 | 易家林 | Orthopedics is with supplementary training bed of lumbar disc herniation |
| CN113353593A (en) * | 2021-05-28 | 2021-09-07 | 北新建材(天津)有限公司 | Gypsum board panel turnover machine |
| WO2023173558A1 (en) * | 2022-03-16 | 2023-09-21 | 北京罗森博特科技有限公司 | Elastic traction system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117686423B (en) * | 2024-02-04 | 2024-04-16 | 烟台大学 | Device and method for detecting bonding strength of concrete fiber |
-
2019
- 2019-08-20 CN CN201910770814.6A patent/CN110327105A/en active Pending
-
2020
- 2020-05-13 CN CN202010403760.2A patent/CN111358542A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111035490A (en) * | 2019-12-27 | 2020-04-21 | 靳彩霞 | Orthopedics draw gear |
| CN111035490B (en) * | 2019-12-27 | 2020-10-09 | 靳彩霞 | Orthopedics draw gear |
| CN112841973A (en) * | 2021-04-08 | 2021-05-28 | 栗豪豪 | Office chair capable of being used for leg training |
| CN113208864A (en) * | 2021-04-13 | 2021-08-06 | 易家林 | Orthopedics is with supplementary training bed of lumbar disc herniation |
| CN113208864B (en) * | 2021-04-13 | 2022-07-01 | 湖南省人民医院(湖南师范大学附属第一医院) | Orthopedics is with supplementary training bed of lumbar disc herniation |
| CN113353593A (en) * | 2021-05-28 | 2021-09-07 | 北新建材(天津)有限公司 | Gypsum board panel turnover machine |
| CN113353593B (en) * | 2021-05-28 | 2022-04-12 | 北新建材(天津)有限公司 | Gypsum board panel turnover machine |
| WO2023173558A1 (en) * | 2022-03-16 | 2023-09-21 | 北京罗森博特科技有限公司 | Elastic traction system |
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| Publication number | Publication date |
|---|---|
| CN111358542A (en) | 2020-07-03 |
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Application publication date: 20191015 |