CN209529314U - Plug screw mounting device - Google Patents
Plug screw mounting device Download PDFInfo
- Publication number
- CN209529314U CN209529314U CN201822201939.0U CN201822201939U CN209529314U CN 209529314 U CN209529314 U CN 209529314U CN 201822201939 U CN201822201939 U CN 201822201939U CN 209529314 U CN209529314 U CN 209529314U
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- Prior art keywords
- plug screw
- casing
- sleeve
- mounting device
- plug
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- Withdrawn - After Issue
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Abstract
The disclosure is directed to a kind of plug screw mounting device, the plug screw mounting device includes: first sleeve, the second casing, third casing and guide rod, and contraposition part, the first aperture and the first limiting device are provided in first sleeve；Guide rod is mounted in first sleeve for installing the first plug screw and the second plug screw；Second casing is sheathed on the first sleeve, and the second limiting device for limiting the second plug screw position is provided on the second casing；Third sleeve first end is sheathed on second casing, and second end extends and be sheathed on the first sleeve to the direction far from the contraposition part, can rapid-aligning, raising plug screw installation effectiveness.
Description
Technical field
This disclosure relates to the field of medical instrument technology, in particular to a kind of plug screw mounting device.
Background technique
In internal fixation of spine operation, nail-stick system is a kind of common fixed device, for connecting and fixing vertebra up and down
Body.It usually requires for locking plug screw to be fitted into spinal bone screw during determining using nail-stick system state.Currently, plug screw will be locked
Be packed into spinal bone screw during, need using plug screw holder hold a locking screw fill in row contraposition and pre-tighten, then into
Row locking.
Due to including more spinal bone screw and locking plug screw in nail-stick system, being packed into locking plug screw using plug screw holder is needed
It repeatedly to capture, align and lock.Cause locking plug screw installation effectiveness low, the set-up time is long.
It should be noted that information is only used for reinforcing the reason to the background of the disclosure disclosed in above-mentioned background technology part
Solution, therefore may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
The disclosure is designed to provide a kind of plug screw mounting device, and then overcomes the relevant technologies at least to a certain extent
Locking plug screw needs are packed into using plug screw holder repeatedly to capture, align and lock, and cause locking plug screw installation effectiveness low, installation
The problem of time length.
A kind of plug screw mounting device is provided according to the disclosure, the plug screw mounting device includes:
First sleeve, first end are provided with contraposition part, for and screw contraposition, the is provided on the first sleeve side wall
One aperture, the first aperture are provided with the first limiting device far from the side of the contraposition part；
Guide rod passes through the first sleeve, and can rotate and slide in the first sleeve, is used for installation the
One plug screw and the second plug screw, first plug screw and the second plug screw are sheathed on the guide rod, and second plug screw is located at institute
State side of first plug screw far from the contraposition part；
Second casing is sheathed on the first sleeve, and the second limiting device, the second limit are provided on second casing
Device is protruded into the first sleeve by first aperture, and second casing can be axially with respect to the first set
Pipe movement, when second casing is located at first position, second limiting device is in limit state to limit the first spiral shell
The position of plug, when second casing is located at the second position, first aperture struts second limiting device, releasing pair
The limit of first plug screw；
Third casing, first end are sheathed on second casing, and second end extends to the direction far from the contraposition part, and
It is sheathed on the first sleeve, the third internal surface of sleeve pipe is provided with compression unit, and the third casing is enough axially with respect to institute
First sleeve movement is stated, when the third casing is located at the third place, first limiting device is in free state, works as institute
When stating third casing and being located at the third place, the first limiting device described in the compressing section compresses limits the second plug screw.
According to an embodiment of the disclosure, first limiting device includes:
At least one first elastic slice, on the side wall of the first sleeve, on the outside of first elastic slice on be provided with the
One protrusion, it is convex that the compression unit squeezes described first during the third casing is moved to four positions from the third place
It rises, first elastic slice is made to compress second plug screw.
According to an embodiment of the disclosure, the internal diameter of the compression unit first end is greater than the internal diameter of second end, the pressure
Contracting portion is first end close to one end of the contraposition part.
According to an embodiment of the disclosure, second limiting device includes:
At least one second elastic slice is provided with second on the inside of second elastic slice on the side wall of second casing
Protrusion, described second, which projects through first aperture, protrudes into the first sleeve, when second casing is located at first
When setting, second protrusion limits the position of the first plug screw in free state, when second casing is located at the second position
When, second protrusion is in expansion state, releases the limit to first plug screw.
According to an embodiment of the disclosure, first aperture is provided with first tiltedly close to the side of the contraposition part
Face, first inclined-plane extend to the inner wall of first sleeve from the first sleeve outer wall along the direction far from the contraposition part,
When second casing along the first sleeve close to the contraposition part when, it is described second protrusion moved along first inclined-plane,
Release the limitation to first plug screw.
According to an embodiment of the disclosure, the plug screw mounting device further include:
First spring, the first aperture is provided with first boss close to the side of the contraposition part in the first sleeve, institute
The first spring pocket is stated set on the first sleeve, and between the boss and the first end face of second casing.
According to an embodiment of the disclosure, the plug screw mounting device further include:
Second spring, the inner wall of the third casing second end are provided with second boss, and the second spring is sheathed on institute
Guide rod is stated, and between the first sleeve second end face and the second boss.
According to an embodiment of the disclosure, spiral shell is provided on the inner wall adjacent with the contraposition part in the first sleeve
Line, the screw thread is used for and plug screw cooperation.
According to an embodiment of the disclosure, it is provided with guide protrusions on second casing, is set on the third casing
It is equipped with guide groove, the guide protrusions are installed on the guide groove.
According to an embodiment of the disclosure, the guide rod includes:
Guide part, the inner hole of the guide part and plug screw enable the plug screw to rotate with the guide rod；
Rotation section is connected with the guide part, for driving the guide part to rotate.
The plug screw mounting device that the disclosure provides can be arranged multiple plug screws simultaneously on the guide bar, and the second casing is in
When first position, the second limiting device is in limit state to limit the position of the first plug screw, prevents plug screw from moving to first set
The first end of pipe；When third casing moves to four positions from the third place, the first limiting device of compressing section compresses, to the second spiral shell
Fill in capable limit；The second limiting device is converted to opening from limit state when second casing moves to the second position from first position
State, at this time the first plug screw limit release, and the second plug screw is still limited, and the first plug screw falls to contraposition by self gravity
Then portion completes the installation of plug screw by guide rod.Once capturing for multiple screw plugs is realized, and being capable of quick and screw
Contraposition solves the problem for locking that plug screw installation effectiveness is low, and the set-up time is grown.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The disclosure can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure
Example, and together with specification for explaining the principles of this disclosure.It should be evident that the accompanying drawings in the following description is only the disclosure
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of axonometric schematic diagram for plug screw mounting device that disclosure exemplary embodiment provides.
Fig. 2 is a kind of schematic cross-sectional view for plug screw mounting device that disclosure exemplary embodiment provides.
Fig. 3 is a kind of partial schematic sectional view for plug screw mounting device that disclosure exemplary embodiment provides.
Fig. 4 is a kind of schematic diagram for first sleeve that disclosure exemplary embodiment provides.
Fig. 5 is a kind of axonometric schematic diagram for first sleeve that disclosure exemplary embodiment provides.
Fig. 6 is the axonometric schematic diagram for the second casing of one kind that disclosure exemplary embodiment provides.
Fig. 7 is the left view schematic diagram for the second casing of one kind that disclosure exemplary embodiment provides.
Fig. 8 is a kind of axonometric schematic diagram for third casing that disclosure exemplary embodiment provides.
Fig. 9 is a kind of schematic diagram for third casing that disclosure exemplary embodiment provides.
Figure 10 is a kind of schematic cross-sectional view for third casing that disclosure exemplary embodiment provides.
Figure 11 is a kind of schematic diagram for guide rod that disclosure exemplary embodiment provides.
Figure 12 is a kind of schematic cross-sectional view for guide rod that disclosure exemplary embodiment provides.
Figure 13 is a kind of axonometric schematic diagram for guide rod that disclosure exemplary embodiment provides.
Figure 14 is a kind of schematic diagram for thread bush that disclosure exemplary embodiment provides.
Figure 15 is a kind of schematic cross-sectional view for thread bush that disclosure exemplary embodiment provides.
Figure 16 is a kind of component perspective view of the explosion that disclosure exemplary embodiment provides.
Figure 17 is a kind of schematic diagram for plug screw that disclosure exemplary embodiment provides.
Figure 18 is a kind of schematic diagram for screw that disclosure exemplary embodiment provides.
Figure 19 is the schematic diagram for another screw that disclosure exemplary embodiment provides.
In figure:
100, first sleeve；110, contraposition part；120, the first aperture；121, the first inclined-plane；130, the first elastic slice；131,
One protrusion；140, first boss；200, the second casing；210, the second elastic slice；211, the second protrusion；212, inscribed circle；220, it leads
To protrusion；300, third casing；310, compression unit；320, guide groove；400, guide rod；410, guide part；420, rotation section；
421, position-limitting pin；422, positive stop lug boss；430, thread bush；431, external screw thread；432, ring flange；500, the first spring；600,
Second spring；700, the first plug screw；800, the second plug screw；900, screw；910, tail is followed closely.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the present invention will
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical attached drawing in figure
Label indicates same or similar structure, thus the detailed description that will omit them.
Although the term of relativity, such as "upper" "lower" is used to describe a component of icon for another in this specification
The relativeness of one component, but these terms are in this manual merely for convenient, for example, with reference to the accompanying drawings described in show
The direction of example.It is appreciated that, if making it turn upside down the device overturning of icon, the component described in "upper" will
As the component in "lower".When certain structure is at other structures "upper", it is possible to refer to that certain structural integrity is formed in other structures
On, or refer to that certain structure is " direct " and be arranged in other structures, or refer to that certain structure is arranged by the way that another structure is " indirect " in other knots
On structure.
Term "one", " one ", "the", " described " and "at least one" be to indicate that there are one or more elements/groups
At part/etc.；Term " comprising " and " having " is to indicate the open meaning being included and refer in addition to listing
Element/component part/also may be present except waiting other element/component part/etc.；Term " first ", " second " and " third "
It is used as to mark Deng only and use, be not the quantity limitation to its object.
A kind of plug screw mounting device, as shown in Figure 1, Figure 2 and Figure 3, the plug screw are provided firstly in this example embodiment
Mounting device includes first sleeve 100, the second casing 200, third casing 300 and guide rod 400:
100 first end of first sleeve is provided with contraposition part 110, for being aligned with screw 900,100 side of first sleeve
The first aperture 120 is provided on wall, the first aperture 120 is provided with the first limiting device far from the side of the contraposition part 110；It leads
The first sleeve 100 is passed through to bar 400, and can rotate and slide in the first sleeve 100, for installing first
Plug screw 700 and the second plug screw 800, first plug screw 700 and the second plug screw 800 are sheathed on the guide rod 400, and described
Two plug screws 800 are located at side of first plug screw 700 far from the contraposition part 110；
Second casing 200 is sheathed on the first sleeve 100, is provided with the second limiting device on second casing 200,
Second limiting device is protruded into the first sleeve 100 by first aperture 120, and second casing 200 can be along axis
It is moved to relative to the first sleeve 100, when second casing 200 is located at first position, second limiting device
The position that the first plug screw 700 is limited in limit state, when second casing 200 is located at the second position, described first
Aperture 120 struts second limiting device, releases the limit to first plug screw 700；
300 first end of third casing is sheathed on second casing 200, and second end is to the side far from the contraposition part 110
To extension, and it is sheathed on the first sleeve 100,300 inner wall of third casing is provided with compression unit 310, the third set
Pipe 300 is enough to be moved axially with respect to the first sleeve 100, when the third casing 300 is located at the third place, described the
One limiting device is in free state, and when the third casing 300 is located at four positions, the compression unit 310 compresses described
First limiting device limits the second plug screw 800.
The plug screw mounting device that the embodiment of the present disclosure provides can be arranged multiple plug screws simultaneously on guide rod 400, and second
When casing 200 is in first position, the second limiting device is in limit state to limit the position of the first plug screw 700, prevents spiral shell
Plug moves to the first end of first sleeve 100；When third casing 300 moves to four positions from the third place, compression unit 310 is pressed
Contract the first limiting device, limits to the second plug screw 800；When second casing 200 moves to the second position from first position
Two limiting devices are converted to open configuration from limit state, at this time the first plug screw 700 limit release, the second plug screw 800 still by
Limit, the first plug screw 700 fall to contraposition part 110 by self gravity, and the installation of plug screw is then completed by guide rod 400.
Realize multiple plug screws once capture, and can quickly and screw 900 align, solve lock plug screw installation effectiveness it is low,
The problem of set-up time length.
The various pieces of the plug screw mounting device provided below the embodiment of the present disclosure are described in detail:
As shown in Figures 4 and 5, contraposition part 110, the first aperture 120 and the first limiting device are provided in first sleeve 100,
Contraposition part 110 is set to the first end of first sleeve 100, and the first aperture 120 is provided with far from the side of the contraposition part 110
One limiting device.
Contraposition part 110 is used for and screw 900 aligns, the shape at shape and screw 900 installation the plug screw position of contraposition part 110
Matching, for example, screw 900 install plug screw position outer profile be it is cylindric, then contraposition part 110 can be with an open cylinders
The structure of shape cavity, 900 clearance fit of the opening cylindrical cavities and screw are realized by open circles cylindrical cavities and screw 900
Rapid-aligning.Screw thread is provided in first sleeve 100 and the adjacent inner wall of the contraposition part 110, screw thread is used for and the plug screw
Cooperation.
First limiting device includes at least one first elastic slice 130, at least one elastic slice is located at the first sleeve 100
On side wall, it is provided with the first protrusion 131 on 130 outside of the first elastic slice, the compression unit 310 is in the third casing 300
It is moved to during the 4th position from the third place and squeezes first protrusion 131, first elastic slice 130 is made to compress described
Two plug screws 800.
Wherein, the first elastic slice 130 can be with 100 integrated formed structure of first sleeve, for example, by first sleeve
130 edge deletion of the first elastic slice is formed into the first elastic slice 130 on 100 side walls, or is also possible to add on 100 wall of first sleeve
Then elastic slice is installed in elastic slice mounting groove by work elastic slice mounting groove by the modes such as welding or being threadedly coupled, the disclosure is implemented
Example is not specifically limited in this embodiment.
When the first limiting device includes multiple first elastic slices 130, multiple first elastic slices 130 can be in first sleeve 100
It is uniformly distributed circumferentially on side wall, for example, the first limiting device includes three the first elastic slices 130, at this time three the first elastic slices
130, it is uniformly distributed circumferentially on 100 side wall of first sleeve, the central angle of two adjacent the first elastic slices 130 is 120 degree.When
So in practical applications, multiple first elastic slices 130 are also possible to distribution mode heterogeneous, the embodiment of the present disclosure not as
Limit.
First elastic slice 130 is provided with the first protrusion 131 on outside, which when compressed, inwardly squeezes the
One elastic slice 130, second plug screw 800 of 130 clamping sleeve of the first elastic slice on guide rod 400.Wherein, institute in the embodiments of the present disclosure
The first plug screw 700 and the second plug screw 800 stated are plug screw to be installed, and multiple plug screws to be installed cover on guide rod 400, this
When close to contraposition part 110 a plug screw be the first plug screw 700, remaining plug screw be the second plug screw 800.
As shown in Figures 6 and 7, the second limiting device is provided on the second casing 200, the second casing 200 is sheathed on first set
Pipe 100, the second limiting device are protruded into first sleeve 100 by the first aperture 120, and the second casing 200 can be axially opposed
It is moved in first sleeve 100.
Second limiting device includes: at least one second elastic slice 210, described on the side wall of second casing 200
It is provided with the second protrusion 211 on the inside of second elastic slice 210, second protrusion 211 protrudes into described the by first aperture 120
In sleeve 100, when second casing 200 is located at first position, second protrusion 211 is in free state to limit
The position of first plug screw 700, when second casing 200 is located at the second position, second protrusion 211 is in expansion shape
State releases the limit to first plug screw 700.
Wherein, the second elastic slice 210 can be with 200 integrated formed structure of the second casing, for example, by the second casing
210 edge deletion of the second elastic slice is formed into the second elastic slice 210 on 200 side walls, or is also possible to add on 200 wall of the second casing
Then second elastic slice 210 is installed in elastic slice mounting groove, this public affairs by work elastic slice mounting groove by the modes such as welding or being threadedly coupled
Embodiment is opened to be not specifically limited in this embodiment.
When the second limiting device includes multiple second elastic slices 210, multiple second elastic slices 210 can be in the second casing 200
It is uniformly distributed circumferentially on side wall, for example, the second limiting device includes three the second elastic slices 210, at this time three the second elastic slices
210, it is uniformly distributed circumferentially on 200 side wall of the second casing, the central angle of two adjacent the second elastic slices 210 is 120 degree.When
So in practical applications, multiple second elastic slices 210 are also possible to distribution mode heterogeneous, and the arrangement mode of the second aperture can be with
It is identical with 120 arrangement mode of the first aperture
Correspondingly, the quantity of the first aperture 120 and the quantity of the second elastic slice 210 can be identical, and multiple first apertures
120 are uniformly distributed circumferentially on 100 side wall of first sleeve, for example, the second limiting device includes three the second elastic slices 210, this
When first sleeve 100 on can open up three the first apertures 120, be uniformly distributed circumferentially on 100 side wall of first sleeve, it is adjacent
Two the first apertures 120 central angle be 120 degree.
The second protrusion 211 is provided on second elastic slice 210, the second protrusion 211 protrudes into first sleeve by the first aperture 120
100 inside, under original state, the second elastic slice 210 is in free state, and the second protrusion 211 on multiple second elastic slices 210 exists
The diameter of the inscribed circle 212 formed when free state is less than the outer diameter of plug screw, stops the first plug screw 700, realizes the first plug screw 700
Axial limiting.Original state is first position, and the second casing 200 is pushed axially and transports to the side close to contraposition part 110
Dynamic, the second protrusion 211 is strutted outward in motion process, and the diameter of the inscribed circle 212 of multiple second protrusions 211 becomes larger, when this
When the diameter of inscribed circle 212 is greater than the outer diameter of plug screw, the second limiting device loses position-limiting action, the limit quilt of the first plug screw 700
It releases.
Wherein, in order to the second elastic slice 210 be made to expand outwardly in 200 motion process of the second casing, the first aperture 120
The side of the contraposition part 110 is provided with the first inclined-plane 121, the first inclined-plane 121 is from 100 outer wall of first sleeve along remote
Direction from contraposition part 110 extends to the inner wall of first sleeve 100, when second casing 200 is leaned on along the first sleeve 100
When the nearly contraposition part 110, second protrusion 211 is moved along first inclined-plane 121, and multiple second protrusions 211 are inscribed
212 diameters of circle become larger.
Second protrusion 211 can be pin, and pin is set to the end of the second elastic slice 210, and pin and the first inclined-plane 121 connect
The position of touching is provided with the second inclined-plane, and in 200 motion process of the second casing, the second inclined-plane slides on the first inclined-plane 121.
As shown in Fig. 8,9 and 10,300 first end of third casing is sheathed on second casing 200, and second end is to far from institute
The direction for stating contraposition part 110 extends, and is sheathed on the first sleeve 100, and 300 inner wall of third casing is provided with compression unit
310, the internal diameter of 310 first end of compression unit is greater than the internal diameter of second end, the compression unit 310 close to the contraposition part 110 one
End is first end.When pushing third casing 300 to move to the side close to contraposition part 110, compression unit 310 and the first protrusion
131 contacts, squeeze the first protrusion 131, and then the first elastic slice 130 is made to compress the second plug screw 800.
It is provided with guide protrusions 220 on second casing 200, guide groove 320 is provided on the third casing 300, it is described
Guide protrusions 220 are installed on the guide groove 320.When pushing third casing 300 to the side close to contraposition part 110, guiding
Slot 320 is moved relative to guide protrusions 220, after guide protrusions 220 are located at the one end of guide groove 320 far from contraposition part 110, the
300 associated movement of two casings 200 and third casing.Guide protrusions 220 can be pin, and guide groove 320 is long hole.
As shown in Figure 11,12 and 13, guide rod 400 includes guide part 410 and rotation section 420, guide part 410 and plug screw
Inner hole enables the plug screw to rotate with the guide rod 400.For example, the shape of the inner hole of plug screw be it is quincunx, then lead
It is also possible to the cross section of bar 400 quincunx.Rotation section 420 and guide part 410 connect, for driving the guide part 410
Rotation.It is arranged with thread bush 430 on rotation section 420, limit ladder 422 is provided on rotation section 420, limit ladder 422 is close
The side of contraposition part 110 is provided with position-limitting pin 421, and thread bush 430 is located between limit ladder 422 and position-limitting pin 421, and
420 clearance fit of rotation section can be rotated and be slided on guide rod 400, and then adjustable guide part 410 stretches out first set
The length of pipe 100, to adapt to the different screw of nail tail length degree.
As shown in FIG. 14 and 15, one end of thread bush 430 is provided with external screw thread 431, which is used for and first set
The screw-internal thread fit of 100 second end of pipe, the other end of thread bush 430 are provided with ring flange 432, and the ring flange card 432 is in third
The second end face of casing 300, for clamping third casing 300.
Exemplary, plug screw described in the embodiment of the present disclosure can be plug screw as shown in figure 17, and screw can be such as Figure 18
With 19 shown in screw, be a kind of short-tail nail shown in Figure 18, be a kind of long-tail nail shown in Figure 19, wherein the nail of long-tail nail
Tail 910 is longer than the nail tail 910 of short-tail nail, is also possible to other plug screws and screw, the embodiment of the present disclosure in practical applications certainly
It is not limited thereto.
Further, in order to guarantee after installing plug screw, the second casing 200 and third casing 300 can reset, the plug screw
Mounting device further includes the first spring 500 and second spring 600；First aperture 120 is close to the contraposition part in first sleeve 100
110 side is provided with first boss 140, and first spring 500 is sheathed on the first sleeve 100, and is located at described the
Between one boss 140 and the first end face of second casing 200；As shown in figure 16, the inner wall of 300 second end of third casing is set
It is equipped with second boss, the second spring 600 is sheathed on the guide rod 400, and is located at 100 second end face of first sleeve
Between the second boss.
In a kind of feasible embodiment that the embodiment of the present disclosure provides, the second casing may include the second casing sheet
Body, the second protrusion 211 and guide protrusions 220, the second protrusion 211 are set to the second elastic slice in the second sleeve body, guide protrusions
220 are set to the second sleeve body lateral wall.When assembly, third casing 300 is sheathed on the second sleeve body first, it is convex by second
It plays 211 and is riveted on the second elastic slice 210, guide protrusions 220 are riveted on the second sleeve outer wall, and be located at guide protrusions 220
In guide groove 320, sheath assembly is formed；First spring 500, second spring 600 and sheath assembly are covered in first sleeve 100
On, and first sleeve 100 is protruded by the first aperture 120 in one end of the second protrusion 211；Plug screw is covered on guide rod 400,
The guide rod 400 equipped with plug screw is penetrated from the second end of third casing 300, so that on thread bush 430 and first sleeve 100
Threaded engagement.
In use, third casing 300 is pushed to the direction close to contraposition part 110, the compression unit 310 on third casing 300
The first protrusion 131 is squeezed, the first protrusion 131 squeezes the first elastic slice 130, compresses the second plug screw 800；When on third casing 300
After guide protrusions 220 on guide groove 320 one end and the second casing 200 far from contraposition part 110 contact, 300 band of third casing
Dynamic second casing 200 moves together, and the second protrusion 211 is slided along the first inclined-plane 121, and the second elastic slice 210 expands outwardly, the first spiral shell
700 limit of plug releases, and due to self gravitation effect, the first plug screw 700 falls to the adjacent spiral shell of 100 contraposition part 110 of first sleeve
Line portion rotates guide rod 400 by rotation section 420, drives the first plug screw 700 in threaded portion precession, subsequently into screw 900,
It is screwed with the internal screw thread on screw 900, completes the installation of plug screw.
After the first plug screw 700 falls into threaded portion, loosen third casing 300, the second casing 200 drives in second spring 600
Dynamic lower reset, third casing 300 reset under the driving of third spring, and the first limiting device and the second limiting device also return to
Original state, the second plug screw 800 releases limit at this time, falls to the position of the second protrusion 211, at this time near the second protrusion
211 the second plug screw 800 becomes the first plug screw 700.Then it repeats the above steps and carries out the installation of another plug screw.
The plug screw mounting device that the embodiment of the present disclosure provides can be pre-loaded into a certain number of locking plug screws, contraposition part 110
Spinal bone screw ailhead can be inserted in and realize positioning, stripped thread when locking plug screw being avoided to screw in.After locking plug screw screw-in screw ailhead,
New locking plug screw can be transported to 100 front end of first sleeve by the push-and-pull of third casing 300, to execute next operation；
Long and short tail nail operation can be met simultaneously.
Contraposition part and spinal bone screw contour mimicry simultaneously realize that minim gap cooperates, guide rod and spinal bone screw ailhead concentricity
Preferably, guaranteeing will not be because axis deviation generates stripped thread phenomenon when locking plug screw is screwed into screw；There is position-limitting pin on guide rod 400,
Guarantee guide rod can adapt to the operation of long-tail nail with short-tail nail in axial a certain range activity simultaneously；Guide rod 400 is preparatory
It is packed into certain amount and locks plug screw, reduce the time that locking plug screw is captured again, aligned, locking.If 100 front end of first sleeve has
Dry button screw thread, to realize that locking plug screw is controlled oneself.After first locking plug screw is threaded into, new locking plug screw can just be output to guiding
Bar front end is not screwed into place with preventing from currently locking plug screw, and new locking plug screw is also screwed out and fallen into the human body.Pass through
Third pulled by sleeve and each casing itself elasticity and plug screw gravity itself realize that locking plug screw is fallen down, and structure is simple.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the disclosure
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principles of this disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by appended
Claim is pointed out.
Claims (10)
1. a kind of plug screw mounting device, which is characterized in that the plug screw mounting device includes:
First sleeve, first end are provided with contraposition part, for aligning with screw, are provided with first on the first sleeve side wall and open
Hole, the first aperture are provided with the first limiting device far from the side of the contraposition part；
Guide rod passes through the first sleeve, and can rotate and slide in the first sleeve, for installing the first spiral shell
Plug and the second plug screw, first plug screw and the second plug screw are sheathed on the guide rod, and second plug screw is located at described the
Side of one plug screw far from the contraposition part；
Second casing is sheathed on the first sleeve, the second limiting device, the second limiting device is provided on second casing
It is protruded into the first sleeve by first aperture, second casing can be transported axially with respect to the first sleeve
Dynamic, when second casing is located at first position, second limiting device is in limit state to limit the first plug screw
Position, when second casing is located at the second position, first aperture struts second limiting device, releases to described
The limit of first plug screw；
Third casing, first end are sheathed on second casing, and second end extends to the direction far from the contraposition part, and is arranged
In the first sleeve, the third internal surface of sleeve pipe is provided with compression unit, and the third casing is enough axially with respect to described the
Sleeve movement, when the third casing is located at the third place, first limiting device is in free state, when described the
When three casings are located at four positions, the first limiting device described in the compressing section compresses limits the second plug screw.
2. plug screw mounting device as described in claim 1, which is characterized in that first limiting device includes:
At least one first elastic slice, on the side wall of the first sleeve, on the outside of first elastic slice on to be provided with first convex
It rises, the compression unit squeezes first protrusion during third casing is moved to four positions from the third place, makes
First elastic slice compresses second plug screw.
3. plug screw mounting device as claimed in claim 2, which is characterized in that the internal diameter of the compression unit first end is greater than second
The internal diameter at end, the compression unit are first end close to one end of the contraposition part.
4. plug screw mounting device as described in claim 1, which is characterized in that second limiting device includes:
At least one second elastic slice is provided with the second protrusion on the side wall of second casing on the inside of second elastic slice,
Described second, which projects through first aperture, protrudes into the first sleeve, when second casing is located at first position,
Second protrusion limits the position of the first plug screw, when second casing is located at the second position, institute in free state
The second protrusion is stated in expansion state, releases the limit to first plug screw.
5. plug screw mounting device as claimed in claim 4, which is characterized in that first aperture is close to the one of the contraposition part
Side is provided with the first inclined-plane, and first inclined-plane extends to the along the direction far from the contraposition part from the first sleeve outer wall
The inner wall of sleeve, when second casing along the first sleeve close to the contraposition part when, it is described second protrusion along described
The movement of first inclined-plane, releases the limitation to first plug screw.
6. plug screw mounting device as described in claim 1, which is characterized in that the plug screw mounting device further include:
First spring, the first aperture is provided with first boss close to the side of the contraposition part in the first sleeve, and described
One spring pocket is set to the first sleeve, and between the first boss and the first end face of second casing.
7. plug screw mounting device as described in claim 1, which is characterized in that the plug screw mounting device further include:
Second spring, the inner wall of the third casing second end are provided with second boss, and the second spring is sheathed on described lead
To bar, and between the first sleeve second end face and the second boss.
8. plug screw mounting device as described in claim 1, which is characterized in that adjacent with the contraposition part in the first sleeve
Inner wall on be provided with screw thread, the screw thread is used for and plug screw cooperation.
9. plug screw mounting device as described in claim 1, which is characterized in that guide protrusions are provided on second casing,
Guide groove is provided on the third casing, the guide protrusions are installed on the guide groove.
10. plug screw mounting device as described in claim 1, which is characterized in that the guide rod includes:
Guide part, the inner hole of the guide part and plug screw enable the plug screw to rotate with the guide rod；
Rotation section is connected with the guide part, for driving the guide part to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822201939.0U CN209529314U (en) | 2018-12-26 | 2018-12-26 | Plug screw mounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822201939.0U CN209529314U (en) | 2018-12-26 | 2018-12-26 | Plug screw mounting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209529314U true CN209529314U (en) | 2019-10-25 |
Family
ID=68266675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822201939.0U Withdrawn - After Issue CN209529314U (en) | 2018-12-26 | 2018-12-26 | Plug screw mounting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209529314U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111358528A (en) * | 2020-03-23 | 2020-07-03 | 中国人民解放军总医院第八医学中心 | Hepatobiliary calculus removing device |
| CN111358546A (en) * | 2018-12-26 | 2020-07-03 | 北京纳通医学科技研究院有限公司 | Screw plug mounting device |
-
2018
- 2018-12-26 CN CN201822201939.0U patent/CN209529314U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111358546A (en) * | 2018-12-26 | 2020-07-03 | 北京纳通医学科技研究院有限公司 | Screw plug mounting device |
| CN111358546B (en) * | 2018-12-26 | 2023-10-17 | 北京纳通医学科技研究院有限公司 | Screw plug mounting device |
| CN111358528A (en) * | 2020-03-23 | 2020-07-03 | 中国人民解放军总医院第八医学中心 | Hepatobiliary calculus removing device |
| CN111358528B (en) * | 2020-03-23 | 2021-01-19 | 中国人民解放军总医院第八医学中心 | Hepatobiliary calculus removing device |
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Address after: G356, 3rd floor, building 1, yard 9, CHENGWAN street, Haidian District, Beijing 100094 Patentee after: Beijing natong Medical Technology Holding Co.,Ltd. Patentee after: BEIJING NATON TECHNOLOGY GROUP Co.,Ltd. Address before: 100095 3, 2 floor, 2 building, 103 Beiqing Road, Haidian District, Beijing. Patentee before: BEIJING NATON INSTITUTE OF MEDICAL TECHNOLOGY Co.,Ltd. Patentee before: BEIJING NATON TECHNOLOGY GROUP Co.,Ltd. |
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Effective date of registration: 20210305 Address after: G356, 3rd floor, building 1, yard 9, CHENGWAN street, Haidian District, Beijing 100094 Patentee after: Beijing natong Medical Technology Holding Co.,Ltd. Patentee after: BEIJING NATON TECHNOLOGY GROUP Co.,Ltd. Patentee after: Beijing Weilian De Bone Technology Co.,Ltd. Address before: G356, 3rd floor, building 1, yard 9, CHENGWAN street, Haidian District, Beijing 100094 Patentee before: Beijing natong Medical Technology Holding Co.,Ltd. Patentee before: BEIJING NATON TECHNOLOGY GROUP Co.,Ltd. |
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| AV01 | Patent right actively abandoned | ||
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Granted publication date: 20191025 Effective date of abandoning: 20231017 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20191025 Effective date of abandoning: 20231017 |