CN109394323A - 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
- Publication number
- CN109394323A CN109394323A CN201811593960.8A CN201811593960A CN109394323A CN 109394323 A CN109394323 A CN 109394323A CN 201811593960 A CN201811593960 A CN 201811593960A CN 109394323 A CN109394323 A CN 109394323A
- Authority
- CN
- China
- Prior art keywords
- ball collar
- screw
- spine
- pitman
- screw base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
Abstract
The present invention 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 present invention 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, to reduce the time of patients ' recovery.
Description
Technical field
The present invention relates to the field of medical instrument technology, specifically a kind of self-locking Universal screw nail knot for internal fixation of spine
Structure.
Background technique
The present invention relates to the field of medical instrument technology, specifically a kind of self-locking Universal screw nail knot for internal fixation of spine
Structure.
Summary of the invention
It is above-mentioned to solve the purpose of the present invention is to provide a kind of self-locking Universal screw nail structure for internal fixation of spine
The problem of being proposed in background technique.
To achieve the above object, the invention provides the following technical scheme:
A kind of self-locking Universal screw nail structure for internal fixation of spine, including Universal screw nail and pitman, the Universal screw nail
Including button, screw base and ball collar, button is made of thread rod part and spherical head, is equipped with ball on the outside of spherical head
Shape ring offers the ball collar concave spherical surface matched with spherical head inside ball collar lower end, and ball collar lower end outside offers
Ball collar convex spherical, ball collar outside are equipped with screw base, the spiral shell matched with ball collar convex spherical are offered inside screw base
Nail seat concave spherical surface, concave spherical surface lower end offer the through-hole communicated therewith, and ball collar upper end is additionally provided with " C " matched with pitman
Shape card rod slot, " C " shape card rod slot upper end are equipped with " C " shape card rod notch, and pitman side is offered to match with " C " shape card rod notch
The groove of conjunction.
As further technical solution of the present invention: being additionally provided with screw base groove I inside the screw base and screw base is recessed
Slot II.
As further technical solution of the invention: the ball collar lower end outside is additionally provided with ball collar boss.
As further technical solution of the invention: the width A of " C " the shape card rod notch is less than the width of pitman
B。
As further technical solution of the invention: being also provided with U-type groove on the outside of the screw base.
As further technical solution of the invention: the ball collar lower end offers ball collar opening.
As further technical solution of the invention: offering screw base opening on the outside of the screw base.
As further technical solution of the invention: offering on the outside of the ball collar for cooperating the blind of operation tool
Hole.
Compared with prior art, the beneficial effects of the present invention are: sliding to screw by screw base groove I by ball collar boss
Seat groove II, " C " type card rod notch clasps the groove of pitman, and structure is made not need locking plug screw, before locking spherical head with
The cooperation of ball collar concave spherical surface, makes button flexible swinging, and swing angle range is wide in range, and when locking is pressed directly into ball collar, is not necessarily to
Plug screw is twisted, makes simple to operate, fixed safe and reliable after locking, the Universal screw nail incisura without installation locking plug screw is low, right
The interference and damage of soft tissue greatly reduce, to reduce the time of patients ' recovery.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram that the present invention does not install pitman；
Fig. 3 is that the present invention installs the structural schematic diagram that do not lock after pitman；
Fig. 4 is the partial structural diagram after the final locking of the present invention；
Fig. 5 is the structural schematic diagram of screw base in the present invention；
Fig. 6 is the cross-sectional view of screw base in the present invention；
Fig. 7 is the structural schematic diagram of ball collar in the present invention；
Fig. 8 is the cross-sectional view of ball collar in the present invention；
Fig. 9 is the structural schematic diagram of pitman in the present invention；
Figure 10 is the cross-sectional view of pitman in the present invention；
Figure 11 is the scheme of installation of Universal screw nail and pitman in the present invention.
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, 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, 136- ball collar opening, 21- pitman groove.
Specific embodiment
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
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.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term 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 connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
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 pitman
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 ballhead
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 112 phase of spherical head
The ball collar concave spherical surface 131 of cooperation, 13 lower end outside of ball collar offer ball collar convex spherical 132, install on the outside of ball collar 13
There is screw base 12, the screw base concave spherical surface 122 matched with ball collar convex spherical 132 is offered inside screw base 12, can be made
Button 11 is locked completely and uniform force, simple to operate, fixed safe and reliable after locking；It opens 122 lower end of concave spherical surface
Equipped with the through-hole 121 communicated therewith, 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, swings
Angular 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 slot 134
Upper end is equipped with " C " shape card rod notch 1341, and 2 side of pitman offers the groove 21 matched with " C " shape card rod notch 1341,
Pitman 2 is fixed on 13 upper end of ball collar by the groove 21 of pitman 2 and the cooperation of " C " shape card rod notch 1341.
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.
13 lower end of ball collar offers ball collar opening 136, and the setting of ball collar opening 136 makes ball collar 13 can be with
Preferably hold the spherical head 112 of button 11 tightly.
Embodiment 2
The present embodiment advanced optimizes on the basis of embodiment 1, and screw base opening 125 is offered on the outside of the screw base 12,
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.
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, screw base 12
After being promoted afterwards, 12 upper end inner wall of screw base is bonded completely with 13 upper end outer wall of ball collar, limits the bullet of " C " shape card rod slot 134
Property, it is locked at pitman 2 in " C " shape card rod slot 134 and does not deviate from, and pitman 2 will not be rotated axially.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
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 1 or 3 for internal fixation of spine, it is characterised in that: institute
It states ball collar (13) lower end and offers ball collar opening (136).
7. 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).
8. the self-locking Universal screw nail structure according to claim 6 for internal fixation of spine, it is characterised in that: the ball
The blind hole (135) for cooperating operation tool is offered on the outside of shape ring (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811593960.8A CN109394323A (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 |
|---|---|---|---|
| CN201811593960.8A CN109394323A (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 |
|---|---|
| CN109394323A true CN109394323A (en) | 2019-03-01 |
Family
ID=65461261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811593960.8A Pending CN109394323A (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) | CN109394323A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114145828A (en) * | 2021-12-09 | 2022-03-08 | 中国医学科学院北京协和医院 | Locking structure for bone hook system and assembling method thereof |
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| CN107157564A (en) * | 2017-04-26 | 2017-09-15 | 中国人民解放军第四军医大学 | One kind lifting lock type Universal pedicle screw |
| CN207821892U (en) * | 2017-06-06 | 2018-09-07 | 山东威高骨科材料股份有限公司 | One kind can wide-angle lateral-deviation type Universal screw nail |
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2018
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| US20040172020A1 (en) * | 2001-04-06 | 2004-09-02 | Jacques Beaurain | Spinal osteosynthesis device and preparation method |
| US20050096653A1 (en) * | 2003-11-03 | 2005-05-05 | Doubler Robert L. | Bone fixation system with low profile fastener |
| US20080027432A1 (en) * | 2006-07-27 | 2008-01-31 | Strauss Kevin R | Multi-planar, taper lock screw |
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