CN208709946U - One kind strutting pressurizing device - Google Patents
One kind strutting pressurizing device Download PDFInfo
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- CN208709946U CN208709946U CN201721842304.8U CN201721842304U CN208709946U CN 208709946 U CN208709946 U CN 208709946U CN 201721842304 U CN201721842304 U CN 201721842304U CN 208709946 U CN208709946 U CN 208709946U
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- crossbeam
- sliding shoe
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- arm
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Abstract
One kind strutting pressurizing device, the fixed arm of the utility model is fixedly mounted on one end of crossbeam, the sliding shoe of travelling arm is slided along the axis of crossbeam, one end of fixed arm and travelling arm is separately installed with fixture block, the U-shaped card slot and casing connection of fixture block, 2 fixture blocks pass through respectively screw rod be mounted on the fixed block of fixed arm, travelling arm sliding shoe side, perpendicular to the axis of crossbeam, fixture block any can rotate and fixed using the screw axis as 360 ° of axis for the axis of screw rod；Adjustment device II is installed, for adjusting the travelling arm along the sliding of the crossbeam on sliding shoe；There is the gear matched with crossbeam upper rack in adjustment device II；Limits device is installed on sliding shoe, is merely able to unidirectionally slide along crossbeam for limit slippage arm.The beneficial effect is that design is rationally, the fixture blocks of 360 ° of rotations can be to strutting or pressurize and opereating specification, active position control effectively convenient for operating in art；Structure is simple, and amount of parts is few, convenient for assembling, cleaning, disinfection.
Description
Technical field
The utility model relates to a kind of bone surgery medical instrument, strutted more particularly, to one kind of minimally invasive spine surgical plus
Pressure device belongs to the field of medical instrument technology.
Background technique
With computer in surgical instrument continuous renewal, the emergence of advanced medical imaging equipment and surgical procedure
The application of assisting navigation, minimal invasive techniques are rapidly developed in spinal surgery.Spine nail stick internal fixation operation is in treatment backbone
In terms of damage and disease, it is a kind of highly developed spinal surgery, has been widely used and has carried out the reset and fixation of bone.
Usually the fasteners such as pedicle screw, hook are implanted into and are fixed with centrum, are connected by pitman, then is solid with holding screw
It is fixed, it plays a supporting role.In art, before finally tightening holding screw, need according to it is practical carry out it is necessary strut or compress, lead to
Often operated by distraction forcep or compression plier.In addition, the intervertenral space as caused by the diseases such as degeneration change is narrow, need
After spine nail stick internal fixation system is to backbone correcting, Invasive lumbar fusion device is implanted between centrum, so that lesion backbone be made to restore normal
Clearance height.In the process, need using design reasonably strut pressurizing device, by backbone progress parallel opening after again into
The operation of row fusion device implantation.
Currently, for minimally invasive spine surgical strut or compression set, mainly include crossbeam, it is lever arm, fixed arm, U-shaped
Card slot etc., lever arm can be moved back and forth along crossbeam cantilever lever, and fixed arm can make rotating motion around its own axis, by adjusting two
Pedicle screw is fixed in a U-shaped card slot, and carries out strutting compression.The U-shaped card slot of the lever arm end of the tool cannot
Rotation, cannot control effectively to opereating specification；And when strutting or pressurizeing, needs specialized barrel and be used cooperatively, tool
Structure is complicated, and amount of parts is more, is not easy to the preoperative disinfection of device, assembles in art and postoperative cleaning.
Utility model content
It, can not be to opereating specification in order to overcome lever arm end U-shaped card slot existing for existing unfolding pressurizing device not to be able to rotate
It control effectively；Structure is complicated, and amount of parts is more, is not easy to the deficiency of assembling, cleaning, disinfection, and the utility model provides
One kind strutting pressurizing device.
The technical scheme adopted by the utility model to solve the technical problem is as follows: one kind struts pressurizing device, including crossbeam,
Fixed arm, travelling arm, the fixed block of fixed arm are fixedly mounted on one end of crossbeam, and the sliding shoe of travelling arm is sliding along the axis of crossbeam
Dynamic, one end of the fixed arm and travelling arm is separately installed with fixture block, the U-shaped card slot of fixture block and the casing connection of confrontation spanner,
2 fixture blocks pass through respectively screw rod be mounted on the fixed block of the fixed arm, travelling arm sliding shoe side, the screw rod
Axis perpendicular to the axis of the crossbeam, the fixture block can rotate and fixed using the screw axis as 360 ° of axis is any,
Completion dynamic struts or compression motion.
Axis is provided with rack gear in the beam surface.
Adjustment device II is installed, for adjusting the travelling arm along the sliding of the crossbeam on the sliding shoe；
There is the gear matched with the crossbeam upper rack in the adjustment device II.
Limits device is installed on the sliding shoe, is merely able to unidirectionally slide along the crossbeam for limiting the travelling arm
It is dynamic.
The sliding shoe has the through-hole passed through for the crossbeam, is open slot above the through-hole.
3 through-holes are additionally provided with perpendicular to the through-bore axis on the sliding shoe.
Through-hole I above the through-hole is used to install the adjustment device of the travelling arm.
Through-hole II above the through-hole I, which is used to install, limits what the travelling arm was merely able to unidirectionally to slide along crossbeam
Limits device.
Through-hole III below the through-hole is for installing the screw rod connecting with the fixture block.
The adjustment device II of the travelling arm includes gear shaft and rotating handle, and gear shaft is fixedly connected with rotating handle.
Excircle is gear in the middle part of the gear shaft, when the gear shaft passes through the through-hole I of the sliding shoe, the gear and the cross
The rack gear of beam is meshed, and drives the sliding shoe to slide along the crossbeam by rotation rotating handle.
The travelling arm is limited to be merely able to along the limits device that the crossbeam unidirectionally slides include pin, torque spring, bullet
Piece.The pin passes through torque spring and elastic slice and is mounted in the through-hole II, is fixed on elastic slice by torque spring described
In the open slot of sliding shoe.The elastic slice is L-type, and one end of L-type is located at the rack gear recess, so that the gear shaft only can
One-directional rotation, to make the sliding shoe that can only unidirectionally slide along the crossbeam.
Further, change the direction that the crossbeam is inserted into the sliding shoe, so that the travelling arm is to the fixed arm
Direction sliding is slided to the direction far from the fixed arm.
It is also possible that changing the installation direction of L-type elastic slice described in the limits device, the rotation side of the gear shaft is controlled
To so as to adjust the travelling arm along the glide direction of the crossbeam.
There is through-hole III on the fixed block；The screw rod passes through the through-hole III of the fixed block, sliding shoe, with the fixture block
It is threadedly coupled.
The fixed block, sliding shoe the through-hole III on the outside of be fixedly installed ring gear, on the outside of the threaded hole of the fixture block
It is fixedly installed ring gear；The tooth position of ring gear is in the end face of ring, the ring gear of the ring gear and the fixture block of the fixed block or sliding shoe
Opposite installation and intermeshing, when the position of the fixture block, adjustment is finished, and screws the screw rod, ring gear intermeshing will be described
Fixture block is fixed.
The fixed block, sliding shoe III both ends of the through-hole on the outside of be fixedly installed ring gear.
The utility model has the beneficial effects that design is rationally, the fixture blocks of 360 ° of rotations, can be to strutting convenient for operating in art
Or pressurization and opereating specification, active position control effectively；Structure is simple, and amount of parts is few, convenient for assembling, cleaning,
Disinfection.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for strutting pressurizing device of the utility model；
Fig. 2 is that the utility model one kind struts pressurizing device explosive view；
Fig. 3 is sliding shoe structural schematic diagram in the utility model；
Fig. 4 is controling device structure diagram in the utility model；
Fig. 5 is the Application Example schematic diagram of the utility model；
In figure: 1. fixed arms, 2. screw rods, 3. travelling arms, 4. adjustment devices II, 5. adjustment devices I, 6. limits devices, 7.
Crossbeam, 8. rack gears, 9. ring gears, 10. casings, 11. handles, 12. fixture blocks, 13. fixed blocks, 14. sliding shoes, 15. gear shafts, 16.
Rotating handle, 17. gears, 18. pins, 19. torque springs, 20. elastic slices, 21. through-holes, 22. open slots, 23. through-holes I, 24. is logical
Hole II, 25. through-holes III, 26. confrontation spanners.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.But those skilled in the art should
Know, the present invention is not limited to listed specific embodiments, as long as meeting spirit of the invention, should all be included in this
In the protection scope of utility model.
Referring to Fig. 1,2.It includes crossbeam 7, fixed arm 1, travelling arm 3 that the utility model one kind, which struts pressurizing device, described solid
One end of fixed arm 1 and travelling arm 3 is separately installed with fixture block 12, and the U-shaped card slot of fixture block 12 is connect with the casing 10 of confrontation spanner 26.
The fixed arm 1 includes fixed block 13, adjustment device I 5, fixture block 12, and the fixed block 13 is fixedly mounted on crossbeam 7
One end, generally use welding manner and be fixedly connected.
The travelling arm 3 includes sliding shoe 14, adjustment device I 5, fixture block 12, adjustment device II 4, limits device 6.It is described
Adjustment device II 4 is for adjusting the travelling arm 3 along the sliding distance of crossbeam 7, and completion struts or compression motion.The adjustment dress
I 5 are set for adjusting the rotation of the fixture block 12, completion dynamic struts or compression motion.The limits device 6 is described for limiting
Along the glide direction of the crossbeam 7, the travelling arm 3 is merely able to along the unidirectionally sliding of the crossbeam 7 travelling arm 3.
It is identical that the fixed block 13 and sliding shoe 14, which install the structure of fixture block 12,.The adjustment device I 5 includes screw rod
2 and ring gear 9.The fixture block 12 is mounted on the side of the fixed block 13, sliding shoe 14, the axis of the screw rod 2 by screw rod 2
Perpendicular to the axis of the crossbeam 7, the fixture block 12 as 360 ° of axis any rotations and can be fixed using 2 axis of screw rod, complete
At dynamically strutting or compression motion.The ring gear 9 plays fixed effect.
7 cross section of crossbeam is rectangle, and axis is provided with rack gear 8 on 7 surface of crossbeam.
The travelling arm 3 includes sliding shoe 14, fixture block 12, adjustment device I 5, adjustment device II 4, limits device 6.Referring to
Attached drawing 3, the sliding shoe 14 have the through-hole 21 passed through for the crossbeam 7, shape and the crossbeam 7 of the usual through-hole 21
Cross-sectional shape is identical, and through-hole 21 is rectangular in the present embodiment.It is open slot 22 above the through-hole 21, the open slot 22
Width is less than the width of through-hole 21.3 through-holes are additionally provided with perpendicular to 21 axis of through-hole on the sliding shoe 14, wherein
Through-hole I 23 above the through-hole 21 is used to install the adjustment device II 4 of the travelling arm 3；On the through-hole I 23
The through-hole II 24 of side is merely able to the limits device 6 unidirectionally slided along the crossbeam 7 for installing the limitation travelling arm 3；It is located at
The screw rod 2 of the through-hole III 25 of 21 lower section of through-hole for being connect in installation adjusting device I 5 with the fixture block 12.
The adjustment device II 4 of the travelling arm 3 includes gear shaft 15 and rotating handle 16, gear shaft 15 and rotating handle 16
It is fixedly connected.The 15 middle part excircle of gear shaft is gear 17, and the gear shaft 15 passes through the through-hole I 23 of the sliding shoe 14
When, the gear 17 is meshed with the rack gear 8 of the crossbeam 7, drives the sliding shoe 14 along institute by rotating rotating handle 16
State the sliding of crossbeam 7.
Referring to attached drawing 4.The limits device 6 being mounted on the travelling arm 3 is merely able to for limiting the travelling arm 3 along institute
Crossbeam 7 is stated unidirectionally to slide.The limits device 6 includes pin 18, torque spring 19, elastic slice 20, and the pin 18 passes through torsion
Spring 19 and elastic slice 20 are mounted in the through-hole II 24, and elastic slice (20) is fixed on the sliding shoe 14 by torque spring 19
Open slot 22 in.The elastic slice 20 is L-type, and one end of L-type is wedge shape and the recess for being located at the rack gear 8, so that the tooth
Wheel shaft 15 can only one-directionally rotate, to make the sliding shoe 14 can only be along the unidirectionally sliding of crossbeam 7.
Further, the direction for being inserted into the sliding shoe 14 by changing the crossbeam 7, so that the travelling arm 3 is to described
It slides or is slided to the direction far from the fixed arm 1 in the direction of fixed arm 1.
It is also possible that controlling the gear shaft by the installation direction for changing L-type elastic slice 20 described in the limits device 6
15 direction of rotation, so as to adjust the travelling arm 3 along the glide direction of the crossbeam 7.
The fixed block 13, sliding shoe 14 the outside of the through-hole III 25 be fixedly installed ring gear 9, usually in through-hole III 25
Ring gear 9 is provided on the outside of both ends.Ring gear 9 is fixedly installed on the outside of the threaded hole of the fixture block 12.The tooth position of ring gear 9 is in the end of ring
The ring gear 9 of face, the fixed block 13 or sliding shoe 14 and the ring gear 9 of the fixture block 12 are installed in opposite directions and are intermeshed, when described
The position adjustment of fixture block 12 finishes, and screws 2,2 ring gears 9 of the screw rod and is intermeshed, and the fixture block 12 is fixed.
Further, the ring gear 9 can it is separately machined after, pass through welding or other modes and the fixed block 13, sliding
Motion block 14 is fixedly connected.
When application the utility model struts pressurizing device and does spine nail stick internal fixation operation, it is also necessary to confrontation spanner connection
It closes and uses.Confrontation spanner is made of casing 10 and handle 11, and the handle 11 is mutually perpendicular to and is fixedly connected with casing 10, usually
By being welded and fixed.Described sleeve pipe 10 is hollow tubular structure, and hollow pipe outer wall has 4 planes, be in order to strut pressurizing device
Two fixture blocks 12 U-shaped card slot cooperation, increase contact area；Distal end side of the described sleeve pipe 10 apart from handle, casing inner diameter
It matches with pedicle screw, and there are four card slots, can match with the connection thick stick of spinal internal fixation system, is fought convenient for tailfiber
During locking, described sleeve pipe 10 can be in both direction in conjunction with pedicle screw and connection thick stick.For the confrontation being related to
Spanner and pedicle screw are installed as the prior art, therefore details are not described herein.
Referring to attached drawing 5.The utility model strut pressurizing device can in application process have dynamic strut/pressurize with it is quiet
State struts/pressurizes two kinds of forms, in which: dynamically strut/pressurize the front pillar suitable for backbone, center pillar, rear pillar dynamic strut, plus
Pressure, parallel opening/pressurization are suitable for the parallel opening of backbone, pressurization.It is specific:
Dynamically strut applied to the operation of the front pillar of backbone, center pillar, rear pillar when the utility model struts pressurizing device
Or when pressurization, it further includes confrontation spanner 26 that the utility model, which struts pressurizing device, completes adjusting thick stick first and penetrates pedicle screw
U-type groove, will fight spanner 26 10 sets of the casing tail portions in pedicle screw, the cross v notch v card of 10 end of described sleeve pipe
Firmly across the adjusting thick stick of U-type groove, its step are as follows:
A, according to operation it needs to be determined that implement strut or pressurize, determine the travelling arm 3 along the sliding side of the crossbeam 7
To strutting pressurizing device described in assembling；
B, ring gear 9 and the ring gear 9 on the corresponding fixed block 13, sliding shoe 14 for adjusting 2 fixture blocks 12 are axial
Between have gap, the fixture block 12 is rotated 360 ° around the axis of the screw rod 2；
C, the fixture block 12 blocks casing 10, adjusts the position of 2 fixture blocks 12；Adjusting screw rod 2 simultaneously, so that 2
The ring gear 9 above ring gear 9 and the fixed block 13, sliding shoe 14 on the fixture block 12 remains gap, on coronal-plane
The fixture block 12 is together with 10 clamping of described sleeve pipe；
D, the rotating handle 16 for adjusting the adjustment device II 4, so that the travelling arm 3 is slided along the crossbeam 7, to disease
Become the rear pillar of backbone, center pillar carries out dynamic and struts or pressurize.
E, the position of fixture block 12 is kept to fix, and using it as supporting point, centered on the axis of screw rod 2, to confrontation spanner
Casing rotated, realize that the dynamic of front pillar of lesion backbone struts or pressurizes.
When the utility model struts parallel opening or pressurization of the pressurizing device applied to backbone, the utility model, which struts, to be added
Pressure device further includes confrontation spanner 26, completes to adjust the U-type groove that thick stick penetrates pedicle screw first, will fight the casing of spanner 26
10 sets of tail portions in pedicle screw, the cross v notch v of 10 end of described sleeve pipe block the adjusting thick stick across U-type groove, step
It is as follows:
A, it is needed to be to implement to strut either to pressurize according to operation, determines the travelling arm along the sliding side of the crossbeam 7
To assembling the unfolding pressurizing device；
B, ring gear 9 and the ring gear 9 on the corresponding fixed block 13, sliding shoe 14 for adjusting 2 fixture blocks 12 are axial
Between have gap, the fixture block 12 is rotated 360 ° around the axis of the screw rod 2；
C, the fixture block 12 blocks casing 10, adjusts the position of 2 fixture blocks 12；Adjusting screw rod 2 simultaneously, so that 2
Ring gear 9 on the fixture block 12 is contacted and is intermeshed, the fixture block with the ring gear 9 above the fixed block 13, sliding shoe 14
12 fixations are non-rotatable, and the fixture block 12 is together with 10 clamping of described sleeve pipe on coronal-plane；
D, the rotating handle 16 for adjusting the adjustment device II 4, so that the travelling arm 3 is slided along the crossbeam 7, to disease
Become backbone and carries out parallel opening or pressurization.
The utility model one kind struts pressurizing device, provides a kind of in the operation of backbone correcting minimal invasion, progress three
The easy surgical instrument for strutting or pressurizeing is tieed up, realizes that " front pillar ", " center pillar " and " rear pillar " of lesion centrum struts or pressurize, simultaneously
It can also realize parallel opening or the pressurization of centrum.In art, doctor can be supportted according to the reality of patient's Vertebral body between centrum
Distance of opening or pressurize does accurate adjustment.And the casing in the system, confrontation handle when also finally locking as tailfiber use, letter
The configuration of operation tool is changed.
It should be noted that above-described embodiment is exemplary rather than the limitation present invention, those skilled in the art will be designed very
Scope of the claims of more alternate embodiments without departing from this patent.
Claims (10)
1. one kind struts pressurizing device, including crossbeam, fixed arm, travelling arm, the fixed block of fixed arm is fixedly mounted on crossbeam
The sliding shoe of one end, travelling arm is slided along the axis of crossbeam, and one end of the fixed arm and travelling arm is separately installed with fixture block, presss from both sides
The casing connection of the U-shaped card slot of block and confrontation spanner, it is characterized in that: 2 fixture blocks pass through respectively screw rod be mounted on it is described solid
The side of the fixed block of fixed arm, the sliding shoe of travelling arm, axis of the axis of the screw rod perpendicular to the crossbeam, the fixture block
It can be using the screw axis as 360 ° of axis any rotations and fixed, completion dynamic, parallel opening or compression motion.
2. pressurizing device is strutted according to claim 1, it is characterized in that: being provided with rack gear along axis in the beam surface；
Adjustment device II is installed, for adjusting the travelling arm along the sliding of the crossbeam on the sliding shoe；The adjustment
There is the gear matched with the crossbeam upper rack in device II；
Limits device is installed on the sliding shoe, is merely able to unidirectionally slide along the crossbeam for limiting the travelling arm.
3. strutting pressurizing device according to claim 2, lead to it is characterized in that: the sliding shoe has for what the crossbeam passed through
Hole, the through-hole top is open slot；
3 through-holes are additionally provided with perpendicular to the through-bore axis on the sliding shoe；
Through-hole I above the through-hole is used to install the adjustment device of the travelling arm；
Through-hole II above the through-hole I is merely able to the limitation unidirectionally slided along crossbeam for installing the limitation travelling arm
Device；
Through-hole III below the through-hole is for installing the screw rod connecting with the fixture block.
4. pressurizing device is strutted according to claim 3, it is characterized in that: the adjustment device II of the travelling arm includes gear shaft
And rotating handle, gear shaft are fixedly connected with rotating handle；
Excircle is gear in the middle part of the gear shaft, when the gear shaft passes through the through-hole I of the sliding shoe, the gear and institute
The rack gear for stating crossbeam is meshed, and drives the sliding shoe to slide along the crossbeam by rotation rotating handle.
5. strutting pressurizing device according to claim 3, it is merely able to it is characterized in that: limiting the travelling arm along the crossbeam list
It include pin, torque spring, elastic slice to the limits device of sliding；
The pin passes through torque spring and elastic slice and is mounted in the through-hole II, is fixed on elastic slice by torque spring described
In the open slot of sliding shoe；
The elastic slice is L-type, and one end of L-type is located at the rack gear recess, so that the gear shaft can only one-directionally rotate, thus
Slide the sliding shoe can only along the crossbeam unidirectionally.
6. pressurizing device is strutted according to claim 5, it is characterized in that: changing the side that the crossbeam is inserted into the sliding shoe
To so that the travelling arm is slided to the direction of the fixed arm or is slided to the direction far from the fixed arm.
7. pressurizing device is strutted according to claim 5, it is characterized in that: changing L-type elastic slice described in the limits device
Installation direction controls the direction of rotation of the gear shaft, so as to adjust the travelling arm along the glide direction of the crossbeam.
8. pressurizing device is strutted according to claim 3, it is characterized in that: there is through-hole III on the fixed block；The screw rod is worn
The through-hole III for crossing the fixed block, sliding shoe, is threadedly coupled with the fixture block.
9. pressurizing device is strutted according to claim 8, it is characterized in that: outside the through-hole III of the fixed block, sliding shoe
Side is fixedly installed ring gear, is fixedly installed ring gear on the outside of the threaded hole of the fixture block；The tooth position of ring gear is described in the end face of ring
The ring gear of the ring gear of fixed block or sliding shoe and the fixture block is installed in opposite directions and is intermeshed, when the position of the fixture block has adjusted
Finish, screw the screw rod, the fixture block is fixed in ring gear intermeshing.
10. pressurizing device is strutted according to claim 9, it is characterized in that: III liang of the through-hole of the fixed block, sliding shoe
End outside is fixedly installed ring gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721842304.8U CN208709946U (en) | 2017-12-26 | 2017-12-26 | One kind strutting pressurizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721842304.8U CN208709946U (en) | 2017-12-26 | 2017-12-26 | One kind strutting pressurizing device |
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| Publication Number | Publication Date |
|---|---|
| CN208709946U true CN208709946U (en) | 2019-04-09 |
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ID=65968392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721842304.8U Active CN208709946U (en) | 2017-12-26 | 2017-12-26 | One kind strutting pressurizing device |
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| CN (1) | CN208709946U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108143450A (en) * | 2017-12-26 | 2018-06-12 | 北京天和诚医疗科技有限公司 | One kind struts pressue device and its application method |
| CN110403652A (en) * | 2019-08-29 | 2019-11-05 | 浙江省肿瘤医院 | A kind of retractor convenient for adjusting traction distance |
-
2017
- 2017-12-26 CN CN201721842304.8U patent/CN208709946U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108143450A (en) * | 2017-12-26 | 2018-06-12 | 北京天和诚医疗科技有限公司 | One kind struts pressue device and its application method |
| CN110403652A (en) * | 2019-08-29 | 2019-11-05 | 浙江省肿瘤医院 | A kind of retractor convenient for adjusting traction distance |
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