CN102551868A - Posterior cervical spine single open door side block spinous process steel plate - Google Patents

Posterior cervical spine single open door side block spinous process steel plate Download PDF

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Publication number
CN102551868A
CN102551868A CN2012100060605A CN201210006060A CN102551868A CN 102551868 A CN102551868 A CN 102551868A CN 2012100060605 A CN2012100060605 A CN 2012100060605A CN 201210006060 A CN201210006060 A CN 201210006060A CN 102551868 A CN102551868 A CN 102551868A
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CN
China
Prior art keywords
spinous process
fixed part
steel plate
connecting portion
single open
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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
Application number
CN2012100060605A
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Chinese (zh)
Inventor
刘观燚
徐荣明
马维虎
孙韶华
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刘观燚
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Publication date
Application filed by 刘观燚 filed Critical 刘观燚
Priority to CN2012100060605A priority Critical patent/CN102551868A/en
Priority to PCT/CN2012/000493 priority patent/WO2013104093A1/en
Publication of CN102551868A publication Critical patent/CN102551868A/en
Pending legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7071Implants for expanding or repairing the vertebral arch or wedged between laminae or pedicles; Tools therefor

Abstract

A posterior cervical spine single open door side block spinous process steel plate is stretching-Z-shaped and comprises a first fixing portion, a second fixing portion and a connecting portion. The first fixing portion and the second fixing portion are connected by the connecting portion, an obtuse angle is formed between the first fixing portion and the connecting portion, and an obtuse angle is also formed between the second fixing portion and the connecting portion. The posterior cervical spine single open door side block spinous process steel plate is characterized in that the first fixing portion comprises a body placed on the outer wall of a vertebral plate and a spinous process fixing portion matching with the outer wall of spinous process, the tail end of the body is upwards bent to form the spinous process fixing portion, the spinous process fixing portion is provided with a first through hole, and a spinous process screw penetrates through the first through hole. Compared with the prior art, the posterior cervical spine single open door side block spinous process steel plate has the advantages that as the thickness of the spinous process is much larger than that of the vertebral plate, a fixing effect of the spinous process screw is better than stability of screws perpendicularly placed on the vertebral plate in terms of biomechanics, furthermore, a tip of the spinous process screw can be seen directly during surgery, the screw does not touch the spinal canal of a patient assuredly, the cervical spinal cord is not injured, and surgery safety is enhanced.

Description

Posterior cervical single open-door lateral mass spinous process steel plate
Technical field
The present invention relates to a kind of posterior cervical fixation steel plate.
Background technology
Various clinically at present such as spinal canal stenosis, prolapse of cervical intervertebral disc, various cervical spondylosis such as neck marrow damage often need the decompression of the way of escape.Conventional decompression operation method is the row laminectomy for decompression, with rongeur spinous process and vertebral plate is stung and is removed, and exposes the canalis spinalis of corresponding sections.Carry out internal fixation with the posterior plate immobilization material.Yet this modus operandi makes patient's cervical vertebra movable function lose, and postoperative usually causes intractable pain, and limitation of activity influences operative effect.If the not all right steel plate in vertebral plate decompression back is fixed, then possibly form postoperative cervical spinal instability and kyphosis deformity again.
In recent years, developed in posterior cervical " single open-door " operation as a kind of alternative of laminectomy, not only can be used to treat cervical spondylotic myelopathy, and can prevent cervical spinal instability and kyphosis deformity behind the laminectomy.Operation method is to grind vertical shape bone groove at " side of opening the door " (crack between a door and its frame) vertebral plate and the lateral mass place of associating, makes " V " shape fluting at the corresponding position of " side of opening the door " offside (" hinge side "), keeps the spongy bone and the internal layer cortical bone of 1.0mm thickness.After the hinge side fluting is ready to, cut off open the door the district ligamenta flava and the overlapped part of vertebral plate at two ends up and down, separate cyst wall soft tissue and vein.Open each sections vertebral plate successively.The benefit that posterior cervical " single open-door " operation is merged than way of escape internal fixation is to keep the activity of cervical vertebra, is particularly useful for the operation of long segment.
But " single open-door " operation back " side of opening the door " vertebral plate is closed easily, causes " closing the door " again, causes the clinical symptoms of spinal canal stenosis again.What prevents that vertebral plate from " closing the door " again causes that the canalis spinalis restenosis becomes the focus of research.But in the present spinal column way of escape, still do not have special-purpose being applicable to and keep cervical vertebra vertebral plate opening position, prevent the immobilization material and the device of closing the door again.Use always clinically and fix with colligations such as steel wire or silk threads, very unreliable after fixing, influence operation back effect, or postoperative complication appears.
For this reason; Occur some in the prior art and be specifically designed to the device that posterior cervical opens the door and performs the operation; See that the patent No. is the Chinese utility model patent " new spinal posterior approach lamina reduction fixed part " (Granted publication number for CN201617932U) of ZL201020135415.7, this fixed part is made up of brace and two special screws in a TBE (threaded both ends) hole; All adopting titanium alloy is material; Brace can be moulding in operation.Brace one end is screwed at the vertebral plate stump of not taking away, and the other end is screwed on the vertebral plate that has just resetted, and cracks and locate to fix respectively in the left and right sides of vertebral plate.
Again can referenced patent number be the Chinese utility model patent of ZL200620125952.7 " cervical vertebra open the door fixing head " (Granted publication number be CN201022741Y); This fixing head is processed by a narrow long steel plate; Have vertebral plate fixing head, lateral mass fixing head, connecting plate; Connecting plate connects vertebral plate fixing head and lateral mass fixing head, and at least two screw fixed holes are set on vertebral plate fixing head and the lateral mass fixing head.Vertebral plate fixing head, lateral mass fixing head and connecting plate are stretched Z-shaped.The clamp that further also has an engaging vertebral plate.This fixing head is compared with the disclosed fixing head of ZL201020135415.7; Postoperative stability improves greatly, but has insufficient place slightly, at first; Because cervical vertebra vertebral plate thickness is generally about 3~4mm; Therefore vertebral plate fixedly the time screw not only shorter, fixing insecure, and possibly break through vertebral plate veutro cortex and get into canalis spinalis infringement neck marrow; There is individual variation in each patient of vertebral plate opening part; Like the difference of vertebral plate thickness, the length of vertebral plate opening angle and remaining vertebral plate etc., and the fixing head of unified specification all is unique on the clamping position of setting angle and clamp; Changeless; There is certain difficulty in fine setting, thereby the stability of whole postoperative also is not best, can further improve.
Summary of the invention
Technical problem to be solved by this invention is that a kind of fixation steel plate that in the operation of posterior cervical single open-door, is used to connect lateral mass and spinous process is provided to the above-mentioned state of the art.Change the vertebral plate hold-down screw of existing 3~4mm length into spinous process screw; Regular length can reach 12mm, because spinous process thickness substantially exceeds the thickness of vertebral plate, makes the spinous process screw fixed effect be better than the stability of on vertebral plate, vertically putting nail on the biomechanics; And owing to can look at the nail point of spinous process screw in the art straight; The assurance screw is not invaded canalis spinalis, and damage neck marrow has improved operation safety.
The present invention to solve another technical problem: the clamp of the support vertebral plate of posterior cervical single open-door lateral mass spinous process steel plate can be made corresponding adjustment according to the difference of the actual vertebral plate thickness of patient and the length of remaining vertebral plate.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of posterior cervical single open-door lateral mass spinous process steel plate; This steel plate is tensile Z type; Comprise first fixed part, second fixed part and connect the connecting portion of aforementioned first fixed part and second fixed part; Aforesaid first fixed part becomes an obtuse angle with connecting portion; Aforesaid second fixed part also becomes an obtuse angle with connecting portion, it is characterized in that described first fixed part comprise the body that places the vertebral plate outer wall and with the suitable spinous process fixed part of spinous process outer wall, aforesaid spinous process fixed part by the end of body upwards bending form and have first through hole that supplies spinous process screw to pass through.
Described connecting portion one side is provided with a clamp, forms one between this clamp and the aforesaid body and supplies the bayonet socket of remaining vertebral plate clamping.During installation, body and remaining vertebral plate outer wall interlock, and clamp is held the inwall of remaining vertebral plate, and the head of remaining vertebral plate then is arranged in the bayonet socket, and the setting of clamp makes whole skeleton more firm.
For making clamp can adapt to the difference between the Different Individual, guarantee safety to greatest extent and steadiness, described clamp can be arranged on the connecting portion along the connecting portion length direction movably.
Described connecting portion be provided with one when supplying dilator to strut clamp as a board of fulcrum, this support plate portion is positioned at the clamp below and near second fixed part.For clamp accurately is provided with fast; Can adopt dilator, dilator first struts portion and second portion of strutting forms by what two centres were rotationally connected each other, when clamp is regulated; First strut portion front end be positioned on the clamp; Second strut portion front end be positioned on the board, through control first strut portion front end and second strut the distance of the front end of portion, just can optimum state be transferred in the clamp position.
The preferred following design of the adjustment structure of clamp: described connecting portion alongst forms a bar hole; Accordingly; The end of described clamp has the noses that can in bar hole, move around; Have screw in these noses, an adjustment screw passes aforesaid bar hole and this screw connects as one.Noses adapt to the bar hole inwall, and can not rotate, and are preferably square.
Described connecting portion alongst forms a bar hole, and a plant bone mass is arranged on the connecting portion and along this bar hole and can moves.
The adjusting of plant bone mass is provided with preferred following structure: described plant bone mass end face has a screw hole, and an adjustment screw passes described bar hole and this screw hole connects as one.
Further, form second through hole that a confession lateral mass screw passes through on described second fixed part.
Further, the duct of said first fixing hole and second fixing hole can be designed to bell mouth shape, the fine setting when being convenient to screw and inserting on the angle.
Compared with prior art, the invention has the advantages that: because spinous process thickness substantially exceeds the thickness of vertebral plate, it is darker to make that spinous process screw is beaten, thereby fixing more firm, and is difficult for invading the neck marrow, guarantees the safety of postoperative.In addition, the clamp of the support vertebral plate of posterior cervical single open-door lateral mass spinous process steel plate can be made accurate adjustment according to the difference of the actual vertebral plate thickness of patient and the length of remaining vertebral plate.Has the important use meaning clinically.
Description of drawings
Fig. 1 is embodiment 1 structural representation.
Fig. 2 is embodiment 1 exploded.
Fig. 3 is that embodiment 1 installs the back state diagram.
Fig. 4 is the enlarged drawing of A portion among Fig. 3.
Fig. 5 is state diagram during the clamp position adjustments among the embodiment 1.
Fig. 6 is embodiment 2 structural representations.
Fig. 7 is embodiment 3 structural representations.
Fig. 8 is embodiment 4 structural representations.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Embodiment 1; Present embodiment is a most preferred embodiment; Like Fig. 1 and Fig. 2, the posterior cervical single open-door lateral mass spinous process steel plate in the present embodiment is tensile Z type substantially, comprises first fixed part 1, second fixed part 2 and connects the connecting portion 3 of first fixed part 1 and second fixed part 2; 3 one-tenth one obtuse angles of first fixed part 1 and connecting portion; Second fixed part 2 also becomes an obtuse angle with connecting portion 3, first fixed part 1 comprise the body 11 that places the vertebral plate outer wall and with the suitable spinous process fixed part 4 of spinous process outer wall, spinous process fixed part 4 by the end of body 11 upwards bending form and have first through hole 41 that supplies spinous process screw to pass through.Form second through hole 21 that a confession lateral mass screw passes through on second fixed part 2.First fixed part 1, connecting portion 3 and second fixed part 2 in the present embodiment are integral piece.The duct of first fixing hole and second fixing hole can be designed to bell mouth shape, the fine setting when being convenient to screw and inserting on the angle.
Connecting portion 3 one sides are provided with one along the mobile clamp 5 of connecting portion length direction, form one between this clamp 5 and first fixed part 11 and supply the bayonet socket 53 of remaining vertebral plate clamping.Connecting portion 3 be provided with one when supplying dilator to strut clamp as a board 7 of fulcrum, a board 7 is positioned at clamp 5 belows and near second fixed part 2.
The adjustable structure of clamp is provided with as follows: connecting portion 3 alongst forms a bar hole 31; Accordingly; The end of clamp 5 has the noses 51 that can in bar hole 31, move around; Have screw 52 in these noses 51, adjustment screw 6 is passed bar hole 31 and is connected as one with screw 52.Noses 51 are square bar hole 31 inwalls that adapt to, and can not rotate.
Like Fig. 3 and shown in Figure 4; Posterior cervical single open-door lateral mass spinous process steel plate in the present embodiment is arranged on the state behind one of them cervical vertebra 10; Spinous process fixed part 4 is positioned at spinous process 100 outer walls and fixing through spinous process screw 81, and second fixed part 2 is positioned on the lateral mass 102 also fixing through lateral mass screw 82.Body 11 interlocks with remaining vertebral plate 101 outer walls, and clamp 5 is held the inwall of remaining vertebral plate 101, and the head of remaining vertebral plate 101 then is arranged in the bayonet socket 53.
In conjunction with shown in Figure 5; Dilator 103 first is strutted portion 104 and second and struts portion 105 and form by what two centres were rotationally connected each other; During clamp 5 position adjustments, first strut portion 104 front end be positioned on the clamp 5, second strut portion 105 front end be positioned on the board 7; Through control first strut portion 104 front end and second strut the distance of the front end of portion 105, just can optimum state be transferred in clamp 5 positions.With adjustment screw 6 clamp 5 is fixed after being transferred to suitable position, taken out dilator 103 and get final product.
Embodiment 2, and is as shown in Figure 6, do not have a clamp and a board design in the present embodiment, other structure reference implementation examples 1.
Embodiment 3, and is as shown in Figure 7, and the clamp 5 in the present embodiment is integrated with connecting portion 3, can not regulate, and also do not prop up the board design.Other structure reference implementation examples 1.
Embodiment 4, and is as shown in Figure 8, and the connecting portion 3 in the present embodiment alongst forms a bar hole 31, and plant bone mass 9 is arranged on the connecting portion 3 and along this bar hole 31 and can moves.Plant bone mass 9 end faces have screw hole, and adjustment screw 91 is passed bar hole 31 and connected as one with screw hole.Present embodiment does not prop up the board design, other structure reference implementation examples 1.

Claims (9)

1. posterior cervical single open-door lateral mass spinous process steel plate; This steel plate is tensile Z type; Comprise first fixed part, second fixed part and connect the connecting portion of aforementioned first fixed part and second fixed part; Aforesaid first fixed part becomes an obtuse angle with connecting portion; Aforesaid second fixed part also becomes an obtuse angle with connecting portion, it is characterized in that described first fixed part comprise the body that places the vertebral plate outer wall and with the suitable spinous process fixed part of spinous process outer wall, aforesaid spinous process fixed part by the end of body upwards bending form and have first through hole that supplies spinous process screw to pass through.
2. posterior cervical single open-door lateral mass spinous process steel plate according to claim 1 is characterized in that described connecting portion one side is provided with a clamp, forms one between this clamp and aforesaid first fixed part and supplies the bayonet socket of remaining vertebral plate clamping.
3. posterior cervical single open-door lateral mass spinous process steel plate according to claim 2 is characterized in that described clamp can be arranged on the connecting portion along the connecting portion length direction movably.
4. posterior cervical single open-door lateral mass spinous process steel plate according to claim 3, it is characterized in that described connecting portion be provided with one when supplying dilator to strut clamp as a board of fulcrum, this support plate portion is positioned at the clamp below and near second fixed part.
5. posterior cervical single open-door lateral mass spinous process steel plate according to claim 3; It is characterized in that described connecting portion alongst forms a bar hole; Accordingly; The end of described clamp has the noses that can in bar hole, move around, and has screw in these noses, and an adjustment screw passes aforesaid bar hole and this screw connects as one.
6. posterior cervical single open-door lateral mass spinous process steel plate according to claim 1 is characterized in that described connecting portion alongst forms a bar hole, and a plant bone mass is arranged on the connecting portion and along this bar hole and can moves.
7. posterior cervical single open-door lateral mass spinous process steel plate according to claim 6 is characterized in that described plant bone mass end face has a screw hole, and an adjustment screw passes described bar hole and this screw hole connects as one.
8. according to the described posterior cervical single open-door of arbitrary claim lateral mass spinous process steel plate in the claim 1~7, it is characterized in that forming on described second fixed part second through hole that a confession lateral mass screw passes through.
9. posterior cervical single open-door lateral mass spinous process steel plate according to claim 8, the duct that it is characterized in that said first fixing hole and second fixing hole is a bell mouth shape.
CN2012100060605A 2012-01-10 2012-01-10 Posterior cervical spine single open door side block spinous process steel plate Pending CN102551868A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2012100060605A CN102551868A (en) 2012-01-10 2012-01-10 Posterior cervical spine single open door side block spinous process steel plate
PCT/CN2012/000493 WO2013104093A1 (en) 2012-01-10 2012-04-12 Posterior cervical unilateral-open-door lateral-mass spinous process steel plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012100060605A CN102551868A (en) 2012-01-10 2012-01-10 Posterior cervical spine single open door side block spinous process steel plate

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CN (1) CN102551868A (en)
WO (1) WO2013104093A1 (en)

Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN103549991A (en) * 2013-11-01 2014-02-05 上海拓腾医疗器械有限公司 Supporting device used for vertebral plate expansion and formation
CN103860245A (en) * 2014-03-22 2014-06-18 常州市康辉医疗器械有限公司 Anti-withdrawing stable cervical vertebra posterior single-opening door sheet nailing system
CN105266877A (en) * 2015-11-26 2016-01-27 广州聚生生物科技有限公司 Spinal column vertebral plate open-door fixing system
CN105411662A (en) * 2015-12-31 2016-03-23 四川大学华西医院 Screw-free cervical posterior approach laminoplasty self-locking mini-steel plate fixing device
CN110353793A (en) * 2019-07-26 2019-10-22 北京市春立正达医疗器械股份有限公司 Posterior cervical follows closely board fixer
CN112426217A (en) * 2020-10-30 2021-03-02 北京大学第三医院(北京大学第三临床医学院) Spinous process reconstruction opening door plate

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Publication number Priority date Publication date Assignee Title
US20040030388A1 (en) * 2002-05-30 2004-02-12 Null William B. Laminoplasty devices and methods
CN101150995A (en) * 2003-10-20 2008-03-26 黑石医药股份有限公司 Bone plate and method for using bone plate
CN2860376Y (en) * 2005-12-29 2007-01-24 周许辉 Internal fixator for single side entrance of cervical vertebrae plate
CN102215766A (en) * 2008-09-29 2011-10-12 季米特里·G·孔德拉绍夫 System and method to stabilize a spinal column including a spinolaminar locking plate
CN201710448U (en) * 2010-02-02 2011-01-19 周初松 Spine fixing steel plate system
CN102247207A (en) * 2011-04-07 2011-11-23 雷伟 Universal omni-posterior-double lateral mass bridging board for cervical vertebra
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103549991A (en) * 2013-11-01 2014-02-05 上海拓腾医疗器械有限公司 Supporting device used for vertebral plate expansion and formation
CN103860245A (en) * 2014-03-22 2014-06-18 常州市康辉医疗器械有限公司 Anti-withdrawing stable cervical vertebra posterior single-opening door sheet nailing system
CN105266877A (en) * 2015-11-26 2016-01-27 广州聚生生物科技有限公司 Spinal column vertebral plate open-door fixing system
CN105411662A (en) * 2015-12-31 2016-03-23 四川大学华西医院 Screw-free cervical posterior approach laminoplasty self-locking mini-steel plate fixing device
CN110353793A (en) * 2019-07-26 2019-10-22 北京市春立正达医疗器械股份有限公司 Posterior cervical follows closely board fixer
CN112426217A (en) * 2020-10-30 2021-03-02 北京大学第三医院(北京大学第三临床医学院) Spinous process reconstruction opening door plate
CN112426217B (en) * 2020-10-30 2022-03-04 北京大学第三医院(北京大学第三临床医学院) Spinous process reconstruction opening door plate

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Application publication date: 20120711