CN101912296A - Multidirectional locking and fixing device for screw - Google Patents
Multidirectional locking and fixing device for screw Download PDFInfo
- Publication number
- CN101912296A CN101912296A CN 201010273122 CN201010273122A CN101912296A CN 101912296 A CN101912296 A CN 101912296A CN 201010273122 CN201010273122 CN 201010273122 CN 201010273122 A CN201010273122 A CN 201010273122A CN 101912296 A CN101912296 A CN 101912296A
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- China
- Prior art keywords
- screw
- circular
- hole
- cambered surface
- fixing device
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Abstract
The invention discloses a multidirectional locking and fixing device for a screw, which belongs to a medicinal instrument. A fixing device (1) is provided with a circular screw hole (2), a screw (5) and pins (6), wherein the inner wall of the circular screw hole (2) is a spherical cambered surface; the circular screw hole (2) is adjacent to and communicated with a circular pin hole (3) on the fixing device (1); the spherical cambered surface of the inner wall of the circular screw hole (2) is jointed with the spherical cambered surface of the outer wall of an unclosed C-shaped ring (4); the internal thread on the inner wall of the C-shaped ring (4) is engaged with the screw (5); and the pins (6) are placed between the circular pin hole (3) and the unclosed two ends of the C-shaped ring (4). The device has the advantages of locking and fixing stability and variable screw direction flexibility at the same time, and particularly has the advantages of predominant flexibility, stability and operation convenience during dissecting a part with a complex structure or a destroyed bone part. The device is mainly used for clinical surgical fixation such as fracture fixation, spinal column fixation, spinal column fusion, joint fusion, orthopedics and the like.
Description
Technical field
The invention belongs to medical apparatus and instruments internal fixation technical field, when being specifically related to, be used for the multidirectional locking technique for fixing that is connected between screw and the fixture as operations such as all kinds of fracture fixations, spinal fixation, spinal fusion, joint fusion, malformation corrections clinically.
Background technology
Operation such as all kinds of clinically fracture fixations, spinal fixation, spinal fusion, joint fusion, malformation correction needs to use fixation device mostly, and existing screw adopts the locking of screw thread frame for movement to be connected with fixture (steel plate, titanium plate, titanium rod, external fixator etc.).Its thread lock is meant pre-threaded in the circular staple hole on fixture, with be threaded the head screw be screwed into after, it is as a whole that screw and fixture just become, the frictional force that does not rely on bone-steel plate interface just can obtain powerful fixation, has also avoided general steel plate to become angle poor stability, compressing periosteum, influence deficiency such as fracture end blood supply.But thread lock also exists screw orientation constant, can not change the important deficiency of the direction of screw according to state of an illness needs in the art, influenced the stability of screw and the fixed bony structures of desire, and brought very big inconvenience, be unfavorable for giving full play to the advantage of thread lock to operation technique.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structurely, the one-tenth angle stability that keeps thread lock can change the screw of screw orientation and the multidirectional locking and fixing device of fixture arbitrarily according to needs in the art simultaneously in certain range of activity.
Technical scheme that purpose of the present invention adopts, comprise circular staple hole, screw, pin are arranged on the fixture, its described circular staple hole inwall be spherical cambered surface, with fixture on circular pin hole adjacent, and be connected, being spherical cambered surface at hole, circular staple hole inwall spherical cambered surface with untight C shape ring outer wall pastes mutually, C shape ring inwall female thread and screw engagement are not sealed at circular pin hole and C shape ring and to be placed with pin between the two ends.
The present invention utilizes circular pin hole and C shape ring not to seal pin is arranged between the two ends, and C shape ring can not be rotated with screw turns; Utilize circular staple hole inwall spherical cambered surface and be spherical cambered surface with untight C shape ring outer wall and paste mutually, therefore can change the screw fixed-direction arbitrarily; Screw is screwed into and makes behind the C shape ring expand back and circular staple hole inwall spherical cambered surface of the latter combine closely that to form locking fixing in the back.This device possesses the advantage of the variable motility of locking fixed stable property and screw orientation simultaneously, especially has the outstanding advantage easily of stablizing flexibly, operate at the position of anatomical structure complexity or sclerotin partial destruction.
Description of drawings
Further specify the present invention below in conjunction with accompanying drawing.
Fig. 1 is the one embodiment of the invention structural representation.
Fig. 2 is that Figure 1A-A is to the TV structure sketch map.
Among the figure: 1-fixture 2-circular staple hole 3-circular pin hole 4-C shape ring 5-screw 6-pin.
The specific embodiment
As shown in Figure 1 and Figure 2, fixture 1 is tabular embodiment, comprise circular staple hole 2 is arranged on the fixture 1, screw 5, the pin 6, its described circular staple hole 2 inwalls be spherical cambered surface, with fixture 1 on circular pin hole 3 adjacent, and be connected, 2 hole inwall spherical cambered surfaces are spherical cambered surface with untight C shape ring 4 outer walls and paste mutually in the circular staple hole, and C shape ring 4 inwall female threads and screw 5 engagements are not sealed at circular pin hole 3 and C shape ring 4 and to be placed with pin 6 between the two ends.
Fixture 1 can be a steel plate, or titanium plate, titanium rod, exterior fixation bracket etc.; That fixture 1 can be according to the needs of application site is tabular, arc, triangle or special dissection profile.
Claims (1)
1. multidirectional locking and fixing device for screw, comprise circular staple hole (2) is arranged on the fixture (1), screw (5), the pin (6), it is characterized in that: described circular staple hole (2) inwall be spherical cambered surface, with fixture (1) on circular pin hole (3) adjacent, and be connected, being spherical cambered surface at hole, circular staple hole (2) inwall spherical cambered surface with untight C shape ring (4) outer wall pastes mutually, the engagement of C shape ring (4) inwall female thread and screw (5) is not sealed at circular pin hole (3) and C shape ring (4) and to be placed with pin (6) between the two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010273122 CN101912296A (en) | 2010-09-06 | 2010-09-06 | Multidirectional locking and fixing device for screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010273122 CN101912296A (en) | 2010-09-06 | 2010-09-06 | Multidirectional locking and fixing device for screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101912296A true CN101912296A (en) | 2010-12-15 |
Family
ID=43320065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010273122 Pending CN101912296A (en) | 2010-09-06 | 2010-09-06 | Multidirectional locking and fixing device for screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101912296A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112370140A (en) * | 2020-10-20 | 2021-02-19 | 广东施泰宝医疗科技有限公司 | Width-adjustable locking occipital bone plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993016651A1 (en) * | 1992-02-19 | 1993-09-02 | Danek Medical, Inc. | Spinal fixation system |
| US6379354B1 (en) * | 1993-10-08 | 2002-04-30 | Chaim Rogozinski | Spinal implant and method |
| CN201469395U (en) * | 2009-07-15 | 2010-05-19 | 苏州市百得医疗器械有限公司 | Condyle universal locking bone-knitting plate |
| CN201798794U (en) * | 2010-09-06 | 2011-04-20 | 中国人民解放军第三军医大学第一附属医院 | Fixing device with screw capable of realizing multi-direction locking |
-
2010
- 2010-09-06 CN CN 201010273122 patent/CN101912296A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993016651A1 (en) * | 1992-02-19 | 1993-09-02 | Danek Medical, Inc. | Spinal fixation system |
| US6379354B1 (en) * | 1993-10-08 | 2002-04-30 | Chaim Rogozinski | Spinal implant and method |
| CN201469395U (en) * | 2009-07-15 | 2010-05-19 | 苏州市百得医疗器械有限公司 | Condyle universal locking bone-knitting plate |
| CN201798794U (en) * | 2010-09-06 | 2011-04-20 | 中国人民解放军第三军医大学第一附属医院 | Fixing device with screw capable of realizing multi-direction locking |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112370140A (en) * | 2020-10-20 | 2021-02-19 | 广东施泰宝医疗科技有限公司 | Width-adjustable locking occipital bone plate |
| CN112370140B (en) * | 2020-10-20 | 2022-05-24 | 广东施泰宝医疗科技有限公司 | Width-adjustable locking occipital plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20101215 |