CN205849484U - The two-way device for spreading of cervical vertebra - Google Patents
The two-way device for spreading of cervical vertebra Download PDFInfo
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- CN205849484U CN205849484U CN201521129372.0U CN201521129372U CN205849484U CN 205849484 U CN205849484 U CN 205849484U CN 201521129372 U CN201521129372 U CN 201521129372U CN 205849484 U CN205849484 U CN 205849484U
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- ratchet
- tooth bar
- slide block
- spreading
- arms
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Abstract
The utility model discloses a kind of two-way device for spreading of cervical vertebra, the two-way device for spreading of cervical vertebra includes a rigid staybolt open arms, one flexible staybolt open arms and a tooth bar, rigid staybolt open arms is fixing with tooth bar to be connected, flexible staybolt open arms includes the gear being meshed with tooth bar, and be enclosed within tooth bar and gear is accommodated fairlead in the inner and the handle of steerage gear rotation, flexible staybolt open arms also includes a two-way position-limit mechanism, this bidirectionally limited mechanism includes the first ratchet and the second ratchet being oppositely arranged, and the fixing end of the first ratchet and the second ratchet is connected on the fairlead of gear side.The two-way device for spreading of this utility model cervical vertebra can carry out two-ways regulation to strutting spacing, significantly increases the degree of regulation strutting spacing, and i.e. can strut, it is also possible to inwardly pressurizes.
Description
Technical field
This utility model relates to surgical medical equipment field, more particularly to a kind of two-way device for spreading of cervical vertebra.
Background technology
Anterior cervical vertebrae dilator is a kind of medical apparatus and instruments conventional in anterior cervical operation, and its effect is in operation process
Strut the soft tissue such as skin, muscle and two vertebral bodys, make the soft tissue such as skin, muscle and intervertebral space expand, facilitate operation to carry out.
The patent application of Publication No. CN 1838915A discloses a kind of bone dilator, and this bone dilator can be by parallel
Guider drives the pin connected in being respectively inserted in two tubulose key seats and with bone photo to be opened, and makes two bone relative motioies to be opened, enters
And realize the purpose of bone expansion.
But, existing anterior cervical vertebrae dilator is only capable of unidirectional strutting, and cannot carry out accurately strutting spacing in operation
Regulation, causes great inconvenience to operation.
Utility model content
Because the drawbacks described above of prior art, it is only capable of unidirectional strutting to solve dilator of the prior art, it is impossible to
Accurately regulation struts this technical problem of spacing, and this utility model provides that a kind of cervical vertebra being applicable to Minimally Invasive Surgery is two-way to be strutted
Device.
The purpose of this utility model is achieved through the following technical solutions:
A kind of two-way device for spreading of cervical vertebra, the two-way device for spreading of described cervical vertebra includes a rigid staybolt open arms, and an activity struts
Arm and a tooth bar, described rigid staybolt open arms is fixing with described tooth bar to be connected,
Described flexible staybolt open arms includes the gear being meshed with described tooth bar, and is enclosed within described tooth bar and by described tooth
Wheel accommodates fairlead in the inner and handles the handle of described pinion rotation, and described flexible staybolt open arms also includes a two-way position restrainer
Structure, this bidirectionally limited mechanism includes the first ratchet and the second ratchet being oppositely arranged, described first ratchet and described second ratchet
Fixing end be connected on the fairlead of described gear side, and described first ratchet and the second ratchet are arranged to, and work as institute
Time in the teeth groove of the movable end described tooth bar of embedding stating the first ratchet, the movable end of described second ratchet leaves the tooth of described tooth bar
Groove, by turning handle, described flexible staybolt open arms is only capable of and moves to the direction away from described rigid staybolt open arms；When described second
Time in the teeth groove of the movable end described tooth bar of embedding of ratchet, the movable end of described first ratchet leaves the teeth groove of described tooth bar, logical
Crossing turning handle, described flexible staybolt open arms is only capable of and moves to the direction near described rigid staybolt open arms.
Further, described tooth bar is provided with scale.Can directly read and actual strut distance.
Further, described bidirectionally limited mechanism also includes that a pawl base, described pawl base are provided with relative pawl slot,
Described first ratchet and described second ratchet are embedded in the pawl slot of described pawl base, and described pawl base is fixed on by a rotating shaft
In described fairlead, described first ratchet and described second ratchet are positioned at the both sides of described rotating shaft.
Further, described pawl base also includes the first elastomeric element corresponding to described first ratchet and corresponding to described
Second elastomeric element of the second ratchet, described first elastomeric element is resisted against between described first ratchet and pawl base, and described
Two elastomeric elements are resisted against between described second ratchet and pawl base.Described elastomeric element provides for ratchet and embeds tooth bar teeth groove
Elastic force.
Further, described bidirectionally limited mechanism also include a slide block, described slide block be positioned at described pawl base top and
Can along described fairlead longitudinal sliding motion, described slide block include first male arms corresponding with described first ratchet and with described second spine
The second male arms that pawl is corresponding, when described first male arms top is to described first ratchet, the movable end of described first ratchet embeds institute
Stating in the teeth groove of tooth bar, the movable end of described second ratchet leaves the teeth groove of described tooth bar；When described second male arms top is to described
During the second ratchet, the movable end of described second ratchet embeds in the teeth groove of described tooth bar, and the movable end of described first ratchet leaves
The teeth groove of described tooth bar.
Further, described slide block has primary importance and the second position, when described slide block is positioned at described primary importance,
Described second male arms top is to described second ratchet；When described slide block is positioned at the described second position, described first male arms top is to institute
State the first ratchet.
Further, two sidewalls of described slide block being respectively equipped with a boss, the top side wall of described fairlead is provided with
The chute matched with described boss, described chute be arranged in parallel with described tooth bar, and the boss of described slide block embeds described chute
In, and can be along described slide.
Further, the first male arms of described slide block and the second male arms the most laterally setting a through hole, described through hole is positioned at
The both sides of described boss and be built-in with spring, described both ends of the spring is equipped with a steel ball, the steel ball in described first male arms respectively
Being steel ball B for the steel ball in the second male arms described in steel ball A, the chute of described fairlead is respectively provided on two sides with two steel bead grooves, its
Two steel bead grooves of middle chute side are respectively steel bead groove A and steel bead groove A ', and the steel bead groove of chute opposite side is respectively steel bead groove B
With steel bead groove B ', described steel ball is embedded in described steel bead groove, and when described slide block is positioned at primary importance, described steel ball A is positioned at institute
Stating in steel bead groove A, described steel ball B is positioned at described steel bead groove B, stirs described slide block and passes through described boss in described chute
Slide, make described slide block be changed into the described second position by described primary importance, when described slide block is positioned at the second position, described
Steel ball A is positioned at described steel bead groove A ', described steel ball B and is positioned at described steel bead groove B '.When described slide block is positioned at described first
When putting, described second male arms top is to described second ratchet；When described slide block is positioned at the described second position, described first male arms top
To described first ratchet.
Further, the inner side of described first male arms and described second male arms is cambered surface, two shoulders of described pawl base
For inclined-plane.Coordinated by the inclined-plane of the inner side cambered surface of the first male arms and the second male arms and pawl base shoulder, it is easier to slide block is the
One position and the conversion of the second position.When described slide block is positioned at described primary importance, described second male arms passes through described ratchet
The shoulder top of seat is to described second ratchet；When described slide block is positioned at the described second position, described first male arms passes through described spine
The shoulder top of pawl seat is to described first ratchet.
Compared with prior art, good effect of the present utility model is:
(1) this utility model can be regulated strutting spacing easily by handle；
(2) the two-way device for spreading of this utility model cervical vertebra can carry out two-ways regulation to strutting spacing, significantly increases
To strutting the degree of regulation of spacing, and can either strut, it is also possible to inwardly pressurize.
Below with reference to accompanying drawing, the technique effect of design of the present utility model, concrete structure and generation is made furtherly
Bright, to be fully understood from the purpose of this utility model, feature and effect.
Accompanying drawing explanation
Fig. 1 is the cervical vertebra two-way device for spreading overall structure schematic diagram of a preferred embodiment of the present utility model.
Fig. 2 is the cervical vertebra two-way device for spreading partial enlargement structural representation of a preferred embodiment of the present utility model.
Fig. 3 is the cervical vertebra two-way device for spreading structural representation of a preferred embodiment of the present utility model.
Fig. 4 is that the bidirectionally limited mechanism local of the two-way device for spreading of cervical vertebra of a preferred embodiment of the present utility model is put
Big structural representation.
Fig. 5 is that the cervical vertebra two-way device for spreading fairlead partial enlargement structure of a preferred embodiment of the present utility model is shown
It is intended to.
Detailed description of the invention
Embodiment of the present utility model is specifically introduced below in conjunction with accompanying drawing.
As it is shown in figure 1, the two-way device for spreading of cervical vertebra in the present embodiment includes a rigid staybolt open arms 1, a flexible staybolt open arms 2
With a tooth bar 3, described rigid staybolt open arms 1 is fixing with described tooth bar 3 to be connected,
Described flexible staybolt open arms 2 includes the gear 21 being meshed with described tooth bar 3, and is enclosed within described tooth bar 3 and incites somebody to action
Described gear 21 accommodates fairlead 22 in the inner and handles the handle 23 that described gear 21 rotates, and described flexible staybolt open arms 2 is also
Including a two-way position-limit mechanism 24, this bidirectionally limited mechanism includes the first ratchet 241 and the second ratchet 242, the institute being oppositely arranged
The fixing end stating the first ratchet 241 and described second ratchet 242 is connected on the fairlead 22 of described gear 21 side, and institute
State the first ratchet 241 and the second ratchet 242 is arranged to, when the movable end of described first ratchet 241 embeds the tooth of described tooth bar 3
Time in groove, the movable end of described second ratchet 242 leaves the teeth groove of described tooth bar 3, by turning handle, and described flexible staybolt open arms
2 are only capable of and move to the direction away from described rigid staybolt open arms 1；When the movable end of described second ratchet 242 embeds described tooth bar 3
Teeth groove in time, the movable end of described first ratchet 241 leaves the teeth groove of described tooth bar 3, by turning handle, described flexible staybolt
Open arms 2 is only capable of and moves to the direction near described rigid staybolt open arms 1.
It is provided with scale on described tooth bar.Can directly read and actual strut distance.
Described bidirectionally limited mechanism 24 also includes that a pawl base 243, described pawl base 243 are provided with relative pawl slot
2431, described first ratchet 241 and described second ratchet 242 are embedded in the pawl slot 2431 of described pawl base 243, described ratchet
Seat 243 is fixed in described fairlead 22 by a rotating shaft 245, and described first ratchet 241 and described second ratchet 242 are positioned at institute
State the both sides of rotating shaft.
Described pawl base 243 also includes the first elastomeric element 2432 corresponding to described first ratchet 241 and corresponding to institute
Stating the second elastomeric element 2433 of the second ratchet 242, described first elastomeric element 2432 is resisted against described first ratchet 241 and spine
Between pawl seat 243, described second elastomeric element 2433 is resisted against between described second ratchet 242 and pawl base 243.Described elasticity
Parts provide the elastic force embedding tooth bar 3 teeth groove for ratchet.Elastomeric element described in the present embodiment is spring.
Described bidirectionally limited mechanism also include a slide block 244, described slide block 244 be positioned at described pawl base 243 top and
Can along the longitudinal sliding motion of described fairlead 22, described slide block 244 include first male arms 2441 corresponding with described first ratchet 241 and
Second male arms 2442 corresponding with described second ratchet 242, when described first male arms 2441 is pushed up to described first ratchet 241,
The movable end of described first ratchet 241 embeds in the teeth groove of described tooth bar 3, and the movable end of described second ratchet 242 leaves described
The teeth groove of tooth bar 3；When described second male arms 2442 is pushed up to described second ratchet 242, the movable end of described second ratchet 242 is embedding
Entering in the teeth groove of described tooth bar 3, the movable end of described first ratchet 241 leaves the teeth groove of described tooth bar 3.
Described slide block 244 has primary importance and the second position, when described slide block 244 is positioned at described primary importance, and institute
State the second male arms 2442 to push up to described second ratchet 242；When described slide block 244 is positioned at the described second position, described first convex
Arm 2441 pushes up to described first ratchet 241.
Being respectively equipped with a boss 2443 on two sidewalls of described slide block 244, the top side wall of described fairlead 22 is provided with
The chute 221 matched with described boss 2443, described chute 221 be arranged in parallel with described tooth bar 3, described slide block 244 convex
Platform 2443 embeds in described chute 221, and can slide along described chute 221.
A through hole 2446 is the most laterally set in first male arms 2441 of described slide block 244 and the second male arms 2442, described logical
Hole 2446 is positioned at the both sides of described boss 2443 and is built-in with spring 2444, and described spring 2444 two ends are equipped with a steel ball respectively
2445, the steel ball in described first male arms 2441 be the steel ball in the second male arms 2442 described in steel ball A be steel ball B, described guiding
The chute 221 of set 22 is respectively provided on two sides with two steel bead grooves 222, and wherein two steel bead grooves of chute 221 side are respectively steel ball
Groove A and steel bead groove A ', the steel bead groove of chute 221 opposite side is respectively steel bead groove B and steel bead groove B ', and described steel ball is embedded in described steel
In pearl groove, when described slide block 244 is positioned at primary importance, described steel ball A is positioned at described steel bead groove A, described steel ball B and is positioned at institute
State in steel bead groove B, stir described slide block 244 by the slip in described chute 221 of the described boss 2443, make described slide block
244 are changed into the described second position by described primary importance, and when described slide block 244 is positioned at the second position, described steel ball A is positioned at
In described steel bead groove A ', described steel ball B is positioned at described steel bead groove B '.When described slide block 244 is positioned at described primary importance, institute
State the second male arms 2442 to push up to described second ratchet 242；When described slide block 244 is positioned at the described second position, described first convex
Arm 2441 pushes up to described first ratchet 241.
The inner side of described first male arms 2441 and described second male arms 2442 is cambered surface, two shoulders of described pawl base 243
Portion is inclined-plane.Coordinated by the inclined-plane of the first male arms 2441 and the inner side cambered surface of the second male arms 2442 and pawl base 243 shoulder,
It is easier to slide block 244 in primary importance and the conversion of the second position.When described slide block 244 is positioned at described primary importance, described
Second male arms 2442 passes through the shoulder top of described pawl base 243 to described second ratchet 242；When described slide block 244 is positioned at described
During the second position, described first male arms 2441 passes through the shoulder top of described pawl base 243 to described first ratchet 241.
Rigid staybolt open arms 1 and a flexible staybolt open arms 2 are respectively positioned on upper and lower two vertebras of disease vertebra by operation, rotate hands
Handle 3 regulates two and struts arm and strut spacing to the most required, sick upper and lower two vertebras of vertebra can be navigated to required aperture, doctor
Sick can carrying out clears up vertebra, and the distance that struts according to reading selects implant plate, and carries out subsequent operation.
Preferred embodiment of the present utility model described in detail above.Should be appreciated that the ordinary skill people of this area
Member just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all technology neck
In territory, technical staff passes through logical analysis, reasoning or limited reality on the basis of existing technology according to design of the present utility model
Test available technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (10)
1. the two-way device for spreading of cervical vertebra, it is characterised in that the two-way device for spreading of described cervical vertebra includes a rigid staybolt open arms, one
Flexible staybolt open arms and a tooth bar, described rigid staybolt open arms is fixing with described tooth bar to be connected,
Described flexible staybolt open arms includes the gear being meshed with described tooth bar, and is enclosed within described tooth bar and is held by described gear
The fairlead received in the inner and the handle of the described pinion rotation of manipulation, described flexible staybolt open arms also includes a two-way position-limit mechanism,
This bidirectionally limited mechanism includes consolidating of the first ratchet and the second ratchet being oppositely arranged, described first ratchet and described second ratchet
Fixed end is connected on the fairlead of described gear side, and described first ratchet and the second ratchet are arranged to, when described
Time in the teeth groove of the movable end described tooth bar of embedding of one ratchet, the movable end of described second ratchet leaves the teeth groove of described tooth bar,
By turning handle, described flexible staybolt open arms is only capable of and moves to the direction away from described rigid staybolt open arms；When described second spine
Time in the teeth groove of the movable end described tooth bar of embedding of pawl, the movable end of described first ratchet leaves the teeth groove of described tooth bar, passes through
Turning handle, described flexible staybolt open arms is only capable of and moves to the direction near described rigid staybolt open arms.
2. the two-way device for spreading of cervical vertebra as claimed in claim 1, it is characterised in that described bidirectionally limited mechanism also includes a spine
Pawl seat, described pawl base is provided with relative pawl slot, described first ratchet and described second ratchet and is embedded in described pawl base
In pawl slot, described pawl base is fixed in described fairlead by a rotating shaft, described first ratchet and described second ratchet position
Both sides in described rotating shaft.
3. the two-way device for spreading of cervical vertebra as claimed in claim 2, it is characterised in that described pawl base also includes corresponding to described
First elastomeric element of the first ratchet and the second elastomeric element corresponding to described second ratchet, described first elastomeric element against
Between described first ratchet and pawl base, described second elastomeric element is resisted against between described second ratchet and pawl base.
4. the two-way device for spreading of cervical vertebra as claimed in claim 3, it is characterised in that described bidirectionally limited mechanism also includes that is sliding
Block, described slide block be positioned at described pawl base top and can be along described fairlead longitudinal sliding motion, described slide block includes and described
The first male arms that one ratchet is corresponding and second male arms corresponding with described second ratchet, when described first male arms top is to described first
During ratchet, the movable end of described first ratchet embeds in the teeth groove of described tooth bar, and the movable end of described second ratchet leaves described
The teeth groove of tooth bar；When described second male arms top is to described second ratchet, the movable end of described second ratchet embeds described tooth bar
Teeth groove in, the movable end of described first ratchet leaves the teeth groove of described tooth bar.
5. the two-way device for spreading of cervical vertebra as claimed in claim 4, it is characterised in that described slide block has primary importance and second
Position, when described slide block is positioned at described primary importance, described second male arms top is to described second ratchet；When described slide block is positioned at
During the described second position, described first male arms top is to described first ratchet.
6. the two-way device for spreading of cervical vertebra as claimed in claim 5, it is characterised in that set respectively on two sidewalls of described slide block
Having a boss, the top side wall of described fairlead to be provided with the chute matched with described boss, described chute is put down with described tooth bar
Row is arranged, and the boss of described slide block embeds in described chute, and can be along described slide.
7. the two-way device for spreading of cervical vertebra as claimed in claim 6, it is characterised in that the first male arms of described slide block and second
The most laterally setting a through hole in male arms, described through hole is positioned at the both sides of described boss and is built-in with spring, described both ends of the spring
Be equipped with a steel ball respectively, the steel ball in described first male arms be the steel ball in the second male arms described in steel ball A be steel ball B, described in lead
Chute to set is respectively provided on two sides with two steel bead grooves, and wherein two steel bead grooves of chute side are respectively steel bead groove A and steel ball
Groove A ', the steel bead groove of chute opposite side is respectively steel bead groove B and steel bead groove B ', and described steel ball is embedded in described steel bead groove, works as institute
Stating slide block when being positioned at primary importance, described steel ball A is positioned at described steel bead groove A, described steel ball B and is positioned at described steel bead groove B, dials
Dynamic described slide block, by the slip in described chute of the described boss, makes described slide block be changed into described the by described primary importance
Two positions, when described slide block is positioned at the second position, described steel ball A is positioned at described steel bead groove A ', described steel ball B and is positioned at described
In steel bead groove B '.
8. the two-way device for spreading of cervical vertebra as claimed in claim 7, it is characterised in that when described slide block is positioned at described primary importance
Time, described second male arms top is to described second ratchet；When described slide block is positioned at the described second position, described first male arms top to
Described first ratchet.
9. the two-way device for spreading of cervical vertebra as claimed in claim 8, it is characterised in that described first male arms and described second male arms
Inner side be cambered surface, two shoulders of described pawl base are inclined-plane.
10. the two-way device for spreading of cervical vertebra as claimed in claim 1, it is characterised in that be provided with scale on described tooth bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521129372.0U CN205849484U (en) | 2015-12-29 | 2015-12-29 | The two-way device for spreading of cervical vertebra |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521129372.0U CN205849484U (en) | 2015-12-29 | 2015-12-29 | The two-way device for spreading of cervical vertebra |
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| Publication Number | Publication Date |
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| CN205849484U true CN205849484U (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521129372.0U Active CN205849484U (en) | 2015-12-29 | 2015-12-29 | The two-way device for spreading of cervical vertebra |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106361390A (en) * | 2015-12-29 | 2017-02-01 | 闻泰医疗科技（上海）有限公司 | Bidirectional cervical vertebrae dilation apparatus |
| CN109316212A (en) * | 2018-09-07 | 2019-02-12 | 上海锐植医疗器械有限公司 | One kind strutting blade, unidirectional device for spreading and two-way device for spreading |
-
2015
- 2015-12-29 CN CN201521129372.0U patent/CN205849484U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106361390A (en) * | 2015-12-29 | 2017-02-01 | 闻泰医疗科技（上海）有限公司 | Bidirectional cervical vertebrae dilation apparatus |
| CN109316212A (en) * | 2018-09-07 | 2019-02-12 | 上海锐植医疗器械有限公司 | One kind strutting blade, unidirectional device for spreading and two-way device for spreading |
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| C14 | Grant of patent or utility model | ||
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