CN209301274U - A kind of self-locking Universal screw nail structure for internal fixation of spine - Google Patents
A kind of self-locking Universal screw nail structure for internal fixation of spine Download PDFInfo
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- CN209301274U CN209301274U CN201822188863.2U CN201822188863U CN209301274U CN 209301274 U CN209301274 U CN 209301274U CN 201822188863 U CN201822188863 U CN 201822188863U CN 209301274 U CN209301274 U CN 209301274U
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- ball collar
- screw
- screw base
- spine
- pitman
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Abstract
The utility model relates to a kind of self-locking Universal screw nail structures for internal fixation of spine, belong to the field of medical instrument technology, including Universal screw nail and pitman, Universal screw nail includes button, screw base and ball collar, button is made of thread rod part and spherical head, and ball collar is equipped on the outside of spherical head, is equipped with screw base on the outside of ball collar, ball collar upper end is equipped with " C " shape card rod slot, is equipped with pitman in " C " shape card rod slot；The utility model slides to screw base groove II by screw base groove I by ball collar boss, " C " type card rod notch clasps the groove of pitman, structure is set not need locking plug screw, spherical head and ball collar concave spherical surface cooperate before locking, make button flexible swinging, swing angle range is wide in range, ball collar is pressed directly into when locking, without twisting plug screw, it is fixed safe and reliable after locking, Universal screw nail incisura without installation locking plug screw is low, greatly reduces to the interference and damage of soft tissue, reduces the time of patients ' recovery.
Description
Technical field
The utility model relates to the field of medical instrument technology, the universal spiral shell of specifically a kind of self-locking for internal fixation of spine
Pin structure.
Background technique
It is known that having become the normal for the treatment of centrum disease using screw-rod is fixed in internal fixation of spine operation
Use method.General surgical procedure is, after implantation pedicle nail or Universal screw nail, is put into pitman, pre-tightens locking plug screw, cooperation
Pressure bar device, the auxiliary instruments such as reduction forceps carry out restoring backbone, and surgical procedure is cumbersome.
Traditional screw-rod is fixed, most to occur with screw with the structure of locking plug screw pressure bar, and this structure is opposite to be passed
System, but plug screw part is smaller, it is not easy to install, and plug screw and screw base cooperation pressure bar are locked, it is outer to easily cause screw base expansion
Expand, causes to lock plug screw loosening, structural instability.In addition, making screw because of the screw thread for being equipped with installation locking plug screw in its screw base
Pedestal product is larger, and the interference and damage to human body soft tissue are larger, and recovery period is longer.
Summary of the invention
The purpose of this utility model is to provide a kind of self-locking Universal screw nail structures for internal fixation of spine, to solve
The problems mentioned above in the background art.
To achieve the above object, the utility model provides the following technical solutions:
A kind of self-locking Universal screw nail structure for internal fixation of spine, including Universal screw nail and pitman, it is described universal
Screw includes button, screw base and ball collar, and button is made of thread rod part and spherical head, installation on the outside of spherical head
There is ball collar, the ball collar concave spherical surface matched with spherical head is offered inside ball collar lower end, ball collar lower end outside is opened
Equipped with ball collar convex spherical, screw base is installed on the outside of ball collar, offers inside screw base and is matched with ball collar convex spherical
Screw base concave spherical surface, concave spherical surface lower end offers the through-hole communicated therewith, and ball collar upper end is additionally provided with to be matched with pitman
" C " shape card rod slot, " C " shape card rod slot upper end be equipped with " C " shape card rod notch, pitman side offer with " C " shape card rod slot
The groove that mouth matches.
Further technical solution as the utility model: screw base groove I and screw are additionally provided with inside the screw base
Seat groove II.
Further technical solution as the utility model: the ball collar lower end outside is additionally provided with ball collar boss.
Further technical solution as the utility model: the width A of " C " the shape card rod notch is less than pitman
Width B.
Further technical solution as the utility model: U-type groove is also provided on the outside of the screw base.
Further technical solution as the utility model: screw base opening is offered on the outside of the screw base.
Further technical solution as the utility model: it offers on the outside of the ball collar for cooperating operation tool
Blind hole.
Further technical solution as the utility model: it offers on the outside of the screw base for cooperating operation tool
Screw base promoted groove.
Compared with prior art, the utility model has the beneficial effects that being slided to by ball collar boss by screw base groove I
Screw base groove II, " C " type card rod notch clasp the groove of pitman, and structure is made not need locking plug screw, ballhead before locking
Portion and ball collar concave spherical surface cooperate, and make button flexible swinging, and swing angle range is wide in range, and when locking is pressed directly into ball collar,
Without twisting plug screw, make simple to operate, fixed safe and reliable after locking, the Universal screw nail incisura without installation locking plug screw
It is low, the interference and damage of soft tissue are greatly reduced, to reduce the time of patients ' recovery.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram that the utility model does not install pitman；
Fig. 3 is that the utility model installs the structural schematic diagram that do not lock after pitman；
Fig. 4 is the partial structural diagram after the utility model is finally locked；
Fig. 5 is the structural schematic diagram of screw base in the utility model；
Fig. 6 is the cross-sectional view of screw base in the utility model；
Fig. 7 is the structural schematic diagram of ball collar in the utility model；
Fig. 8 is the cross-sectional view of ball collar in the utility model；
Fig. 9 is the structural schematic diagram of pitman in the utility model；
Figure 10 is the cross-sectional view of pitman in the utility model；
Figure 11 is the scheme of installation of Universal screw nail and pitman in the utility model.
In figure: 1- Universal screw nail, 2- pitman, 11- button, 12- screw base, 13- ball collar, 111- thread rod part,
112- spherical head, 121- through-hole, 122- screw base concave spherical surface, 123- screw base groove I, 124- screw base groove II, 125-
Screw base opening, 126-U type groove, 127- screw base promoted groove, 131- ball collar concave spherical surface, 132- ball collar convex spherical,
133- ball collar boss, 134- " C " shape card rod slot, 1341- " C " shape card rod notch, 135- blind hole, 21- pitman groove.
Specific embodiment
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on the figure
Or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to the utility model
System.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.
Embodiment 1
A kind of self-locking Universal screw nail structure for internal fixation of spine as shown in figs. 1-11, including Universal screw nail 1 and company
Take over the baton 2, the Universal screw nail 1 includes button 11, screw base 12 and ball collar 13, and button 11 is by thread rod part 111 and ball
Forming head portion 112 forms, and is equipped with ball collar 13 on the outside of spherical head 112, offers inside 13 lower end of ball collar and spherical head
The 112 ball collar concave spherical surfaces 131 matched, 13 lower end outside of ball collar offer ball collar convex spherical 132,13 outside of ball collar
Screw base 12 is installed, the screw base concave spherical surface 122 matched with ball collar convex spherical 132 is offered inside screw base 12, it can
So that button 11 is locked completely and uniform force, and it is simple to operate, it is fixed safe and reliable after locking；Under concave spherical surface 122
End offers the through-hole 121 communicated therewith, and thread rod part 111 may pass through the through-hole 121 in 12 centre of screw base, make button
11 spherical head 112 is installed into the ball collar concave spherical surface 131 of ball collar 13, and cooperation through-hole 121 makes 11 flexible swinging of button,
Swing angle range is wide in range；13 upper end of ball collar is additionally provided with " C " the shape card rod slot 134 matched with pitman 2, " C " shape card rod
134 upper end of slot be equipped with " C " shape card rod notch 1341,2 side of pitman offer matched with " C " shape card rod notch 1341 it is recessed
Pitman 2 is fixed on 13 upper end of ball collar by the mutual cooperation of groove 21 and " C " shape card rod notch 1341 by slot 21.
Screw base groove I123 and screw base groove II124 are additionally provided with inside the screw base 12.
13 lower end outside of ball collar is additionally provided with ball collar boss 133, ball collar boss 133 and screw base groove I123
Cooperate with screw base groove II124, ball collar boss 133 is pressed into screw base groove I123, is assembled into Universal screw nail 1, is locked
Before, 133 attachment screw seat groove I123 of ball collar boss lifts screw base 2 by instrument, and ball collar boss 133 slides to screw
Seat groove II124, " C " shape card rod notch 1341 block groove 21, reach locking pitman 2.
The width A of " C " the shape card rod notch 1341 is less than the width B of pitman 2, and setting in this way can make pitman 2
It is not easy in indentation ball collar 13, after pitman 2 is pressed into ball collar 13, then ball collar boss 133 by screw base groove
I123 is pressed into screw base groove II124, and ball collar 13 can be made to lock pitman 2.
U-type groove 126 is also provided on the outside of the screw base 12, U-type groove 126 is matched with pitman 2, is convenient for pitman
2 are caught in " C " shape card rod slot 134.
Embodiment 2
The present embodiment advanced optimizes on the basis of embodiment 1, and screw base opening is offered on the outside of the screw base 12
125, the setting of screw base opening 125 is convenient for operating ball collar 13.
The blind hole 135 of cooperation operation tool is offered on the outside of the ball collar 13, by the indentation of grasping blind hole 135 or can be drawn
Ball collar 13 out, more convenient operation.
Further technical solution as the utility model: it is offered on the outside of the screw base 12 for cooperating operation work
The screw base of tool promotes groove 127, promotes groove 127 by setting screw base and is mentioned convenient for auxiliary instrument lifting screw base 12
It draws and resets.
Working principle is as follows: the spherical head 112 of button 11 is packed into the ball collar concave spherical surface of 13 lower end of ball collar
131, button 11 is tightened in 13 lower end of ball collar under natural resiliency effect, and ball collar 13 and button 11 are by 12 upper end of screw base
Be fitted into screw base 12, screw base groove I123 and ball collar boss 133 cooperate at this time, block ball collar 13, make button 11,
Screw base 12, ball collar 12 are assembled into Universal screw nail 1；After Universal screw nail 1 is implanted into human body, pitman 2 is installed, push rod instrument is solid
It is scheduled on the blind hole 135 of ball collar 13, pitman 2 is installed into " C " shape card rod slot 134 of ball collar 13 by pressure bar, makes
Press ball collar 13 while screw base 12 being lifted with lifting instrument, ball collar boss 133 slides into screw base groove II124, by
Cooperate in ball collar convex spherical 132 and the screw base concave spherical surface 122 of not no Design of Screw Thread, make button 11 locked completely and by
Power is uniform, and the spherical surface trim designs between button 11 and ball collar 13 keep the swing of button 11 more flexible, passes through screw
After seat promotes the promotion screw base 12 of groove 127,12 upper end inner wall of screw base is bonded completely with 13 upper end outer wall of ball collar, is limited
The elasticity of " C " shape card rod slot 134 makes pitman 2 be locked in " C " shape card rod slot 134 not deviate from, and pitman 2 will not axis
To rotation.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. a kind of self-locking Universal screw nail structure for internal fixation of spine, including Universal screw nail (1) and pitman (2), special
Sign is: the Universal screw nail (1) includes button (11), screw base (12) and ball collar (13), and button (11) is by screw thread
Bar portion (111) and spherical head (112) composition, spherical head (112) outside are equipped with ball collar (13), ball collar (13) lower end
Inside offers the ball collar concave spherical surface (131) matched with spherical head (112), and ball collar (13) lower end outside offers ball
Shape ring convex spherical surface (132), ball collar (13) outside are equipped with screw base (12), are offered inside screw base (12) and spherical ring convex
The screw base concave spherical surface (122) that spherical surface (132) matches, concave spherical surface (122) lower end offer the through-hole (121) communicated therewith,
Ball collar (13) upper end is additionally provided with " C " the shape card rod slot (134) matched with pitman (2), " C " shape card rod slot (134) upper end
Equipped with " C " shape card rod notch (1341), pitman (2) side offers the groove matched with " C " shape card rod notch (1341)
(21).
2. the self-locking Universal screw nail structure according to claim 1 for internal fixation of spine, it is characterised in that: the spiral shell
Screw base groove I(123 is additionally provided with inside nail seat (12)) and screw base groove II(124).
3. the self-locking Universal screw nail structure according to claim 1 for internal fixation of spine, it is characterised in that: the ball
Shape ring (13) lower end outside is additionally provided with ball collar boss (133).
4. the self-locking Universal screw nail structure according to claim 1 for internal fixation of spine, it is characterised in that: described
The width A of " C " shape card rod notch (1341) is less than the width B of pitman (2).
5. the self-locking Universal screw nail structure according to claim 1 or 3 for internal fixation of spine, it is characterised in that: institute
It states and is also provided with U-type groove (126) on the outside of screw base (12).
6. the self-locking Universal screw nail structure according to claim 5 for internal fixation of spine, it is characterised in that: the spiral shell
Screw base opening (125) is offered on the outside of nail seat (12).
7. the self-locking Universal screw nail structure according to claim 1 or 3 for internal fixation of spine, it is characterised in that: institute
State the blind hole (135) offered on the outside of ball collar (13) for cooperating operation tool.
8. the self-locking Universal screw nail structure according to claim 5 for internal fixation of spine, it is characterised in that: the spiral shell
It is offered on the outside of nail seat (12) for cooperating the screw base of operation tool to promote groove (127).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822188863.2U CN209301274U (en) | 2018-12-25 | 2018-12-25 | A kind of self-locking Universal screw nail structure for internal fixation of spine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822188863.2U CN209301274U (en) | 2018-12-25 | 2018-12-25 | A kind of self-locking Universal screw nail structure for internal fixation of spine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209301274U true CN209301274U (en) | 2019-08-27 |
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ID=67678693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822188863.2U Active CN209301274U (en) | 2018-12-25 | 2018-12-25 | A kind of self-locking Universal screw nail structure for internal fixation of spine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209301274U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112754632A (en) * | 2020-12-31 | 2021-05-07 | 北京市春立正达医疗器械股份有限公司 | Spine fixing nail and spine fixing nail rod system applying same |
-
2018
- 2018-12-25 CN CN201822188863.2U patent/CN209301274U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112754632A (en) * | 2020-12-31 | 2021-05-07 | 北京市春立正达医疗器械股份有限公司 | Spine fixing nail and spine fixing nail rod system applying same |
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