CN105078556A - Spinal screw-plate structure resistant to bone screw withdrawal - Google Patents
Spinal screw-plate structure resistant to bone screw withdrawal Download PDFInfo
- Publication number
- CN105078556A CN105078556A CN201410192617.8A CN201410192617A CN105078556A CN 105078556 A CN105078556 A CN 105078556A CN 201410192617 A CN201410192617 A CN 201410192617A CN 105078556 A CN105078556 A CN 105078556A
- Authority
- CN
- China
- Prior art keywords
- screw
- bone screw
- type turn
- plate
- spinal
- 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.)
- Granted
Links
Abstract
The invention provides a spinal screw-plate structure resistant to bone screw withdrawal, comprising a spinal screw-plate, C-shaped spring rings and lock screws. The spinal screw-plate is provided with a plurality of connection holes admitting bone screws. Each lock screw comprises a head and a shank. The spinal screw-plate is provided with threaded holes beside the connection holes, wherein the threaded holes are used for mounting the lock screws. The upper portion of each threaded hole is provided with a circular groove which is communicated with the corresponding connection hole; one C-shaped spring ring is locked in this circular groove and unable to move up; part of the edge of the C-shaped spring ring extends into the connection hole. After the bone screws are mounted in the connection holes, the C-shaped spring rings hold against the tops of the bone screws, the lock screws locate in the threaded holes, and the outer edges of the heads of the lock screws are abutted to the inner sides of the C-shaped spring rings. The spinal screw-plate structure is effective in preventing bone screw withdrawal during a spinal internal fixation, is simpler to operate and lower in operating time consumption with fewer surgical risks during a surgery, and enables great convenience for the modern spinal internal fixations.
Description
Technical field
The present invention relates to medical apparatus and instruments, particularly relate to and be a kind ofly applied in vertebral internal fixation the spine nail plate structure preventing bone screw from exiting.
Background technology
Along with the raising of modern medical service level, countermeasure for various disease also increases gradually, wherein vertebral internal fixation is exactly a kind of modern medical service maneuver be used for the treatment of as spinal diseases such as spinal fracture, slippage, deformity and degenerated unstabilitys, its main feature is will be implanted into formula apparatus implant patient spinal column, to reach the effect of spinal fixation by operation.Conventional spinal internal fixation system can be divided into two classes substantially: nail-plate internal fixation system and the excellent internal fixation system of nail.The central link part of nail-plate internal fixation system is metal or nonmetal nail-plate, uses bone screw nail-plate to be connected to the two ends needing fixing spine portion, is fixed spinal column by restriction spinal column two ends relative motion.Following closely excellent internal fixation system is bone screw is arranged on the two ends needing fixing spine portion, then wears rod iron over bone screw and makes multiple bone screw become as a whole to be fixed spinal column.Bone screw in wherein said nail-plate internal fixation system likely occurs to loosen after surgery, so that there is the phenomenon exited, bone screw in human body is once exit, namely contiguous Organ and tissue is likely injured, great danger is caused to patient, therefore, nail-plate internal fixation system needs the reliable anti-bone screw extractor of outfit one.The bone screw retreat-preventing generally used at present goes out device that mechanical Locking, ailhead expansion type, fixed stop are board-like, chute baffle-type, rotary switch and rotary cam type etc.; Wherein mechanical Locking and ailhead expansion type are owing to limiting the implant angle of bone screw too much, so seldom use in spinal column nail-plate internal fixation system, the board-like assembling process of fixed stop is loaded down with trivial details, and chute baffle-type, rotary-switch and rotary cam type have certain uncertainty in use.The above-mentioned mode preventing bone screw from exiting all comes with some shortcomings part, therefore needs a kind ofly to overcome above-mentioned deficiency and the spine nail plate structure that can prevent bone screw from exiting.
Summary of the invention
The technical problem to be solved in the present invention is the spine nail plate structure preventing bone screw from exiting providing a kind of structure simple, easy to use, to overcome the above-mentioned defect of prior art.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: a kind of spine nail plate structure preventing bone screw from exiting, comprise spinal column nail-plate, described spinal column nail-plate is provided with multiple connecting hole for wearing bone screw, also comprise C type turn and lock screw, described lock screw comprises head and bar portion; The connecting hole side of described spinal column nail-plate is provided with the screwed hole for installing lock screw, the top of described screwed hole has cannelure, described cannelure is communicated with connecting hole, and described C type turn is stuck in cannelure and can not moves upward, and the part edge of C type turn extends in connecting hole; When bone screw is arranged in connecting hole, C type turn gear side over bone screw, lock screw is in screwed hole, and the outer rim of the head of lock screw withstands on the inner side of C type turn.
Preferably, be provided with spacing preiection outside described C type turn, the groove edge of described cannelure is provided with the stopper slot coordinated with spacing preiection.
Preferably, described screwed hole is between two adjacent connecting holes, and a described C type turn to keep off in two connecting holes above bone screw under normal conditions.
Preferably, the inside circumference face of described C type turn is evenly provided with four boss, and the external edge of head of described lock screw leans on boss.
As mentioned above, a kind of spine nail plate structure preventing bone screw from exiting of the present invention, has following beneficial effect:
In the present invention, C type turn to be arranged in spinal column nail-plate and to keep off under normal conditions above the head of screw of bone screw, effectively prevent bone screw to exit, and ensured the duty of C type turn in the present invention by lock-screw further, make the present invention safer, reliable in use.In addition, the C type turn in the present invention and lock screw are because can not be subject to the effect of very large power, so its material selection range is greatly, and metal or nonmetallic materials.The present invention is compared with traditional spinal column nail-plate, C type turn and lock-screw have been preset on spinal column nail-plate, without the need to assembling the additional steps such as baffle plate in addition, not only when performing the operation, operation is simpler, and save operating time, minimizing operation risk, for modern vertebral internal fixation brings great convenience.
Accompanying drawing explanation
Fig. 1 is spine nail plate schematic diagram in the present invention.
Fig. 2 is A-A place sectional view in Fig. 1.
Fig. 3 is the schematic diagram of C type turn in the present invention.
Fig. 4 is structure principle chart of the present invention.
Fig. 5 is embodiments of the present invention broken away view.
Fig. 6 is working state schematic representation of the present invention.
In figure: 1 spinal column nail-plate 11 connecting hole
12 screwed hole 13 cannelures
131 stopper slot 2C type turns
21 spacing preiection 22 boss
3 lock screw 4 bone screw
Detailed description of the invention
The structure that Figure of description illustrates, ratio, size etc., content all only in order to coordinate description to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, is not affecting under effect that the present invention can produce and the object that can reach, and all should still drop in scope that disclosed technology contents can contain.Simultaneously, quote in this description as " on ", D score, "front", "rear", the term such as " centre ", also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
The present invention is applied in vertebral internal fixation and prevents bone screw from exiting.As shown in figures 1 to 6, the present invention includes spinal column nail-plate 1, described spinal column nail-plate 1 is provided with multiple connecting hole 11 for wearing bone screw 4; In addition, the present invention also comprises C type turn 2 and lock screw 3.Described lock screw 3 comprises head and bar portion; Connecting hole 11 side of described spinal column nail-plate 1 is provided with the screwed hole 12 for installing lock screw 3, the top of described screwed hole 12 has cannelure 13, described cannelure 13 is communicated with connecting hole 11, described C type turn 2 is stuck in cannelure 13 and can not moves upward, and the part edge of C type turn 2 extends in connecting hole 11.When bone screw 4 is arranged in connecting hole 11, C type turn 2 keeps off above bone screw 4, and lock screw 3 is arranged in screwed hole 12, and the outer rim of lock screw 3 head withstands on the inner side of C type turn 2, restriction C type turn 2 shrinks, and then reaches the effect preventing bone screw 4 from exiting.
As shown in Figure 1,3, spacing preiection 21 is provided with outside described C type turn 2, the groove edge of described cannelure 13 is provided with the stopper slot 131 coordinated with spacing preiection 21, can limit the position of C type turn 2 in cannelure 13, prevent skew after shown spacing preiection 21 and stopper slot 131 coordinate.
Composition graphs 1,4,6, in the present embodiment, described screwed hole 12 is between two connecting holes 11, and a described C type turn 2 keeps off under normal conditions and above bone screw 4, prevents bone screw 4 from exiting in two connecting holes 11.
The inside circumference face of described C type turn 2 is evenly provided with four boss 22, and the external edge of head of described lock screw 3 leans on boss 22; Ensured the opening dimension size of C type turn 2 by boss 22, limit it and shrink, guarantee that C type turn 2 can keep off and prevent bone screw 4 from exiting above connecting hole 11.
Composition graphs 1-6, using method of the present invention and operation principle are: first loaded by C type turn 2 in the cannelure 13 on spinal column nail-plate 1, and allow 21 spacing preiections 21 on C type turn 2 match with the stopper slot 131 of cannelure 13 groove edge, as shown in Figure 4, C type turn 2 after installing keeps opening shape under normality, namely C type turn 2 keeps off on connecting hole 11, but because C type turn 2 has opening, so C type turn 2 can inwardly shrink or outwards open a certain size again, when installing bone screw 4, C type turn 2 is inwardly compressed in the direction of the arrow, thus C type turn 2 can not hinder the installation of follow-up bone screw 4.After C type turn 2 installs, the stem part of lock screw 3 is screwed in the screwed hole 12 of spinal column nail-plate 1 with dividing, but does not screw, and the head of lock screw 3 will be guaranteed above C type turn 2 to make C type turn 2 inwardly to shrink.After assembling, this device is placed into the spinal column position that will be fixedly connected with, bone screw 4 is penetrated from connecting hole 11 and screws in spinal column, when screwing in bone screw 4, C type turn 2 inwardly being compressed, makes the head of screw of bone screw 4 can arrive the below of C type turn 2.After bone screw 4 installs, bone screw 4 is positioned at the below of C type turn 2, and now C type turn 2 again opens and returns to normality and keep off above the head of screw of bone screw 4.Composition graphs 4,6, after bone screw 4 fixes, by lock screw 3 further screw-in screwed hole 12 until the outer rim of the head of lock screw 3 leans on the boss 22 inside C type turn 2, space C type turn 2 being lost inwardly shrink and can not deformation retract, and then also just ensure that bone screw 4 cannot exit; And in the present embodiment, even if lock screw 3 there occurs loosening, what C type turn 2 also can be in the normal state because of itself opens shape and keeps off above connecting hole 11, prevents exiting of bone screw 4 further.
In the above-described embodiments, the normality of described C type turn 2, for opening shape, needs C type turn 2 inwardly to compress when installing bone screw 4, and what during work, C type turn 2 kept normality always opens shape.In addition, the present invention also has another kind of embodiment: the normality of C type turn 2 is contraction-like, is directly passed connecting hole 11 and screw in spinal column and do not need C type turn 2 inwardly to compress when namely installing bone screw 4; Then, when screwing lock screw 3 further, the head of lock screw 3 outwards will strut C type turn 2 and be kept off and prevent bone screw 4 from exiting above bone screw 4 in connecting hole 11.Except above-mentioned difference, in the present embodiment, other steps and principle are all identical with the first embodiment.
In sum, a kind of spine nail plate structure preventing bone screw from exiting of device of the present invention, can solve the problem that in spinal column nail-plate, bone screw exits.So the present invention effectively overcomes practical problems more of the prior art thus has very high value and use meaning.
Above-mentioned embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.The present invention also has many aspects can improve under the prerequisite of overall thought, all without prejudice under spirit of the present invention and category, can modify above-described embodiment or change for person skilled in the art scholar.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (4)
1. the spine nail plate structure preventing bone screw from exiting, comprise spinal column nail-plate (1), described spinal column nail-plate (1) is provided with multiple connecting hole (11) for wearing bone screw (4), it is characterized in that: also comprise C type turn (2) and lock screw (3), described lock screw (3) comprises head and bar portion; Connecting hole (11) side of described spinal column nail-plate (1) is provided with the screwed hole (12) for installing lock screw (3), the top of described screwed hole (12) has cannelure (13), described cannelure (13) is communicated with connecting hole (11), described C type turn (2) is stuck in cannelure (13) and can not moves upward, and the part edge of C type turn (2) extends in connecting hole (11); When bone screw (4) is arranged in connecting hole (11), C type turn (2) gear is in bone screw (4) top, lock screw (3) is in screwed hole (12), and the outer rim of the head of lock screw (3) withstands on the inner side of C type turn (2).
2. a kind of spine nail plate structure preventing bone screw from exiting according to claim 1, it is characterized in that: described C type turn (2) outside is provided with spacing preiection (21), and the groove edge of described cannelure (13) is provided with the stopper slot (131) coordinated with spacing preiection (21).
3. a kind of spine nail plate structure preventing bone screw from exiting according to claim 1, it is characterized in that: described screwed hole (12) is between two adjacent connecting holes (11), and a described C type turn (2) keeps off the top of bone screw (4) in two connecting holes (11) under normal conditions.
4. a kind of spine nail plate structure preventing bone screw from exiting according to claim 1, it is characterized in that: the inside circumference face of described C type turn (2) is evenly provided with four boss (22), the external edge of head of described lock screw (3) leans on boss (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410192617.8A CN105078556B (en) | 2014-05-08 | 2014-05-08 | A kind of backbone tack plate structure for preventing that bone screws from exiting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410192617.8A CN105078556B (en) | 2014-05-08 | 2014-05-08 | A kind of backbone tack plate structure for preventing that bone screws from exiting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105078556A true CN105078556A (en) | 2015-11-25 |
| CN105078556B CN105078556B (en) | 2018-02-06 |
Family
ID=54560519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410192617.8A Active CN105078556B (en) | 2014-05-08 | 2014-05-08 | A kind of backbone tack plate structure for preventing that bone screws from exiting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105078556B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109758221A (en) * | 2019-03-29 | 2019-05-17 | 大博医疗科技股份有限公司 | A kind of compound locking bone fracture plate |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020188296A1 (en) * | 2001-06-06 | 2002-12-12 | Michelson Gary K. | Dynamic, modular, multilock anterior cervical plate system having detachably fastened assembleable and moveable segments, instrumentation, and method for installation thereof |
| US6602255B1 (en) * | 2000-06-26 | 2003-08-05 | Stryker Spine | Bone screw retaining system |
| US20030187442A1 (en) * | 2002-03-12 | 2003-10-02 | Marc Richelsoph | Bone plate and screw retaining mechanism |
| US20040127899A1 (en) * | 2002-12-31 | 2004-07-01 | Konieczynski David D. | Bone plate and screw system allowing bi-directional attachment |
| CN1674833A (en) * | 2002-07-16 | 2005-09-28 | Sdgi控股股份有限公司 | Bone plate fastener retaining mechanisms and methods |
| CN1852684A (en) * | 2003-09-03 | 2006-10-25 | 库尔斯恩蒂斯股份公司 | Bone plate with captive clips |
| CN101035476A (en) * | 2004-06-17 | 2007-09-12 | 华沙整形外科股份有限公司 | Method and appratus for retaining screws in a plate |
| WO2007136452A2 (en) * | 2006-03-22 | 2007-11-29 | Alphaspine, Inc. | Rotolock cervical plate locking mechanism |
| WO2008118599A1 (en) * | 2007-03-27 | 2008-10-02 | Depuy Spine, Inc. | Passive screw locking mechanism |
| US20100274294A1 (en) * | 2001-10-23 | 2010-10-28 | Biedermann Motech Gmbh | Bone fixing device |
| US20110106158A1 (en) * | 2002-08-22 | 2011-05-05 | Larry Gause | System for stabilizing a portion of the spine |
| EP2421455A1 (en) * | 2009-04-20 | 2012-02-29 | Creaholic SA | Fastening apparatus for surgical retaining systems |
| CN203089334U (en) * | 2012-12-27 | 2013-07-31 | 苏州欣荣博尔特医疗器械有限公司 | Self-lock type cervical spine anterior plate |
| US20130218211A1 (en) * | 2010-12-16 | 2013-08-22 | Warsaw Orthropedic, Inc. | Retaining mechanism |
| WO2014062690A1 (en) * | 2012-10-19 | 2014-04-24 | Deroyal Industries, Inc. | Cervical plate with retaining clip |
| CN203898417U (en) * | 2014-05-08 | 2014-10-29 | 上海三友医疗器械有限公司 | Spinal nail plate structure preventing bone screws from dropping out |
-
2014
- 2014-05-08 CN CN201410192617.8A patent/CN105078556B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6602255B1 (en) * | 2000-06-26 | 2003-08-05 | Stryker Spine | Bone screw retaining system |
| US20020188296A1 (en) * | 2001-06-06 | 2002-12-12 | Michelson Gary K. | Dynamic, modular, multilock anterior cervical plate system having detachably fastened assembleable and moveable segments, instrumentation, and method for installation thereof |
| US20100274294A1 (en) * | 2001-10-23 | 2010-10-28 | Biedermann Motech Gmbh | Bone fixing device |
| US20030187442A1 (en) * | 2002-03-12 | 2003-10-02 | Marc Richelsoph | Bone plate and screw retaining mechanism |
| CN1674833A (en) * | 2002-07-16 | 2005-09-28 | Sdgi控股股份有限公司 | Bone plate fastener retaining mechanisms and methods |
| US20110106158A1 (en) * | 2002-08-22 | 2011-05-05 | Larry Gause | System for stabilizing a portion of the spine |
| US20040127899A1 (en) * | 2002-12-31 | 2004-07-01 | Konieczynski David D. | Bone plate and screw system allowing bi-directional attachment |
| CN1852684A (en) * | 2003-09-03 | 2006-10-25 | 库尔斯恩蒂斯股份公司 | Bone plate with captive clips |
| CN101035476A (en) * | 2004-06-17 | 2007-09-12 | 华沙整形外科股份有限公司 | Method and appratus for retaining screws in a plate |
| CN100486540C (en) * | 2004-06-17 | 2009-05-13 | 华沙整形外科股份有限公司 | Method and appratus for retaining screws in a plate |
| WO2007136452A2 (en) * | 2006-03-22 | 2007-11-29 | Alphaspine, Inc. | Rotolock cervical plate locking mechanism |
| WO2008118599A1 (en) * | 2007-03-27 | 2008-10-02 | Depuy Spine, Inc. | Passive screw locking mechanism |
| EP2421455A1 (en) * | 2009-04-20 | 2012-02-29 | Creaholic SA | Fastening apparatus for surgical retaining systems |
| US20130218211A1 (en) * | 2010-12-16 | 2013-08-22 | Warsaw Orthropedic, Inc. | Retaining mechanism |
| WO2014062690A1 (en) * | 2012-10-19 | 2014-04-24 | Deroyal Industries, Inc. | Cervical plate with retaining clip |
| CN203089334U (en) * | 2012-12-27 | 2013-07-31 | 苏州欣荣博尔特医疗器械有限公司 | Self-lock type cervical spine anterior plate |
| CN203898417U (en) * | 2014-05-08 | 2014-10-29 | 上海三友医疗器械有限公司 | Spinal nail plate structure preventing bone screws from dropping out |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109758221A (en) * | 2019-03-29 | 2019-05-17 | 大博医疗科技股份有限公司 | A kind of compound locking bone fracture plate |
| CN109758221B (en) * | 2019-03-29 | 2023-10-24 | 大博医疗科技股份有限公司 | Composite locking bone fracture plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105078556B (en) | 2018-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3000423B1 (en) | Bone plate locking mechanism | |
| AU2011202372B2 (en) | Implant for bone fixation | |
| EP3318208B1 (en) | Distal radius fracture fixation plate with integrated and adjustable volar ulnar facet support | |
| US20230059438A1 (en) | Spine alignment system | |
| EP2873384B1 (en) | Bone anchor and bone anchoring assembly comprising the same | |
| JP2007151674A (en) | Bone plate | |
| JP2008531078A (en) | Plates and screws for fracture treatment | |
| US20220257287A1 (en) | Fusion systems and methods of assembly and use | |
| WO2016058243A1 (en) | Steel plate screw system with universal locking function | |
| AU2016333197A1 (en) | Transverse shifting screw-tail, laterally adjustable spinal screw and implantation method | |
| CN202843773U (en) | Sacrum primary and secondary hollow forcing screw | |
| CN203898417U (en) | Spinal nail plate structure preventing bone screws from dropping out | |
| CN108784815A (en) | A kind of closed bone cement pedicle screw of band guide front end | |
| KR100875943B1 (en) | Oscillating Device | |
| CN105078556A (en) | Spinal screw-plate structure resistant to bone screw withdrawal | |
| JP5198623B2 (en) | Bone plate | |
| US20160095639A1 (en) | Washer assembly for spinal fixation screw | |
| US20230088523A1 (en) | Drill guide for orthopedic device | |
| WO2013082576A1 (en) | Bone screw | |
| CN205391173U (en) | Go up thoracic vertebrae pedicle of vertebral arch screw internal fixation device | |
| WO2016000784A1 (en) | Conical end cap for intramedullary nail | |
| CN207768491U (en) | A kind of new posterior vertebral arch nut internal fixator | |
| KR101707915B1 (en) | Pedicle screw | |
| CN204394659U (en) | A kind of medical anti-rotational internal fixation of spine bar device voluntarily | |
| CN201564585U (en) | Lumbar spondyloschisis forcing screw |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Mingyan Inventor after: Liu Ruifeng Inventor after: Zhang Wenqiao Inventor before: Liu Mingyan Inventor before: Liu Ruifeng Inventor before: Zhang Wenqiao Inventor before: Huang Jiachun |
|
| COR | Change of bibliographic data | ||
| CB02 | Change of applicant information |
Address after: 201807 Jiading District Jia Tang Road, Shanghai, No. 1988 Applicant after: Shanghai Sanyou medical equipment Limited by Share Ltd Address before: 201807 Jiading District Jia Tang Road, Shanghai, No. 1988 Applicant before: Shanghai Sanyou Medical Devices Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20151125 Assignee: Tuoteng (Suzhou) Medical Technology Co.,Ltd. Assignor: SHANGHAI SANYOU MEDICAL Co.,Ltd. Contract record no.: X2021310000036 Denomination of invention: Spine nail plate structure for preventing bone screw from withdrawing Granted publication date: 20180206 License type: Common License Record date: 20210930 |