CN103932774A - Locking device for spiral groove of anterior cervical steel plate - Google Patents
Locking device for spiral groove of anterior cervical steel plate Download PDFInfo
- Publication number
- CN103932774A CN103932774A CN201410147523.9A CN201410147523A CN103932774A CN 103932774 A CN103932774 A CN 103932774A CN 201410147523 A CN201410147523 A CN 201410147523A CN 103932774 A CN103932774 A CN 103932774A
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- CN
- China
- Prior art keywords
- steel plate
- pressure cap
- locking
- locking device
- anterior
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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
- A61B17/7059—Cortical plates
-
- 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
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
- A61B17/7007—Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit around the screw or hook heads
Abstract
The invention discloses a locking device for a spiral groove of an anterior cervical steel plate. The locking device is characterized in that at least the lower end face of the anterior cervical steel plate is matched with the physiological curvature of the cervical vertebra, countersunk steel plate screw holes are formed in the anterior cervical steel plate, pressing cap grooves are formed in the upper end faces of the positions, on ones sides of the countersunk steel plate screw holes, of the anterior cervical steel plate, locking holes are formed in the pressing cap grooves, pressing caps with locking pressing cap sleeves are arranged in the pressing cap grooves, sliding channels becoming light from deep gradually, sliding blocks, concave pits and protrusions are correspondingly arranged on the end faces, in contact with the pressing caps, of the pressing cap grooves, the concave pits and the protrusions are locked, and locating pressing handles for locating steel plate screws in the countersunk steel plate screw holes are arranged on the pressing caps. When the locking device is used, the steel plate is attached to the diseased position of the cervical vertebra, the steel plate is fixed through the screws, the pressing cap are pressed into the pressing cap groove locking holes in a sleeved mode, the pressing cap sliding blocks are made to be in the sliding channels in the pressing cap grooves from deep to light by rotating the pressing caps and are locked through the concave pits and the protrusions, then flanges of the pressing caps are in compression fit with the steel plate, and the locking device has the advantages of being easy to operate, good in stability and the like.
Description
Technical field
The present invention relates to technical field of medical instruments, specifically a kind of anterior cervical plate fixing device for the treatment of human cervical spine disease.
Background technology
Be accompanied by the development of cervical vertebra surgery, the application of anterior approach steel plate in cervical vertebra degeneration increases gradually.At present, anterior plate fixation has become the internal fixation system that is widely used in rebuilding after cervical intervertebral disk and vertebral resection cervical stability, steel plate plays tension band effect while stretching, extension, when flexing, play a supportive role, can ensure the physiological activity of spinal column as far as possible and ensure its clinical effectiveness with the fusion of the decompression of minimum sections and minimum range of activity.Screw makes it combine closely with spinal vertebral and strengthen spinal stability for locking steel plate.The postoperative effect that has stable, promotion at once to merge, maintain cervical curvature, has obtained good clinical effectiveness.Along with the continuous accumulation of clinical experience, anterior plate fixation is also constantly making progress.
Since Bohler 1964 first by anterior approach steel plate for since cervical spinal trauma, orthopedist recognizes that decompression and the cervical vertebra of cervical vertebra reposition, spinal cord and nerve root in the treatment of cervical spine injury stablize equal no less important more.Although skull traction and simple neck marrow decompression can reach the effect that resets and remove spinal cord or nerve root compression to some case, a little less than cervical vertebra Stabilization, client need is liied in bed over a long time and is outer fixing, very unfavorable to rehabilitation.After cervical spinal injury, the protection of cervical vertebra local stability factor to function of nervous system and all very important to patient's prognosis.After the seventies, start to develop the fixing vertebral body of steel plate screw between cervical vertebra vertebral body abroad.The seventies Orozco
2with Tapies, AO short segment H shape steel plate being applied to anterior approach fixes.The eighties Caspar
3develop special instrument and proposed standard art formula and be used widely and obtain good efficacy.Find but observe, its steel plate and screw joint portion are prone to loosening, and as reached strong fixing, screw head screw thread must penetrate vertebral body rear cortical bone, thereby has increased operation technique difficulty, has increased the potential danger of spinal cord injury simultaneously.First the AO group memberships such as Morsche in 1986 design Value of Cervical Spine Locking Plate (Cervical spine locking plate CSL P), by the locking device of hold-down screw tail end, make steel plate and screw strong bonded, screw head does not need to penetrate vertebral body rear cortical bone can reach fixed effect.Therefore AO anterior approach steel plate has been simplified operation greatly, increase operation safety, reduce complication.Locking shape steel plate screw is made up of pure titanium metal material, has very good biocompatibility and corrosion resistance, and its proportion is little, but intensity is large, and surrender degree is large, through the pre-bending processing cervical vertebrae physiological radian that fits like a glove.And because titanium is containing magnetic, interior fixing after feasible MRI check, contribute to understand lesion segment decompression whether fully and spinal cord nature have unchangedly, the rear cervical spinal situation of judgement operation and prognosis are had to very important clinical meaning.Domestic Liu Zhong army
4first apply AO locking plate screw treatment cervical spine injury in June, 1995, Yuan Wen
5first report the application of AO locking plate screw in cervical spine injury, cervical spondylosis, OPIL and cervical vertebra tumor the end of the year 1996.AO locking plate is wide, its width reaches 20. 65mm, and in art, application, more by difficulty of high-order cervical vertebra, often needs to cut off, pushes longus colli open and just can find desirable fixing point, the modest patient who has has been difficult to fixing, and steel plate is its weak point without pre-bending processing.Gold the earth
6within 1999, report application Orion steel plate is in 16 routine cervical spine injuries and disease application.Orion steel plate width is 18mm, the less only 15mm of Zephir steel plate width, and more applicable compatriots' cervical vertebral body width, therefore domestic application Orion and Zephir steel plate increase gradually at present, and obtain good result.Anterior approach steel plate fixed-segment is up to C2, the minimum T2 that reaches at present.
Summary of the invention
The object of the invention is to solve above-mentioned the deficiencies in the prior art, a kind of simple to operate, good stability is provided, can ensure with the fusion of the decompression of minimum sections and minimum range of activity the anterior plate fixation helicla flute locking device of the physiological activity of spinal column.
The technical solution adopted for the present invention to solve the technical problems is.
A kind of anterior plate fixation helicla flute locking device, comprise anterior plate fixation and steel plate screw, at least lower surface and cervical curvature match to it is characterized in that anterior plate fixation, anterior plate fixation is provided with countersunk head steel plate screw hole, the anterior plate fixation upper surface of countersunk head steel plate screw hole one side is provided with pressure cap groove, in pressure cap groove, be provided with locking hole, in pressure cap groove, be provided with the pressure cap of locking pressure cap cover, the end face correspondence that pressure cap groove and pressure cap contact is provided with by deeply gradually shallow slideway and slide block, pit and the projection of locking mutually, pressure cap is provided with the location pressure handle of steel plate screw in countersunk head steel plate screw hole, location.
Pressure cap of the present invention is provided with centre bore, is provided with locking pressure cap flange in centre bore, and locking pressure cap flange presses and coordinates with the countersunk head steel plate screw hole on steel plate, makes can carry out axial-rotation between pressure cap and steel plate, but can not carry out axial displacement.
Anterior plate fixation of the present invention both sides are at least provided with two countersunk head steel plate screw holes accordingly, anterior plate fixation upper surface between countersunk head steel plate screw hole is provided with pressure cap groove, each pressure cap is to be at least provided with two location pressure handles, to increase fixed effect, simplified structure, to make it compacter, to reduce to install width.
Countersunk head steel plate screw of the present invention hole generally adopts inverted cone, also can adopt trapezoidal, to coordinate pressure cap to position steel plate screw.
The cross section semicolumn by dark gradually shallow slideway and slide block that end face that pressure cap groove of the present invention and pressure cap contact is corresponding or the polygon such as trapezoidal, square.
What end face that pressure cap groove of the present invention and pressure cap contact was corresponding can be helicla flute, straight-line groove, oblique trunking, arc groove, different in nature wire casing etc. by the dark gradually track of shallow slideway.
The pit of mutual locking of the present invention or projection are arranged on the pressure handle of location.
When the present invention uses, by steel plate and the laminating of cervical spondylosis position, steel plate is fixed on cervical spondylosis position by screw, the pressure cap cover of pressure cap is compressed into steel plate pressure cap groove locking hole, rotation pressure cap make pressure cap slide block along the slideway in pressure cap groove by deeply gradually shallow and locked by pit and projection, then pressure cap flange is pressed and coordinated with steel plate, make can carry out axial-rotation between pressure cap and steel plate, but can not carry out axial displacement, while utilizing steel plate to stretch, play tension band effect, when flexing, play a supportive role, can ensure the physiological activity of spinal column as far as possible and ensure its clinical effectiveness with the fusion of the decompression of minimum sections and minimum range of activity.Screw makes it combine closely with spinal vertebral and strengthen spinal stability for locking steel plate.It conventionally coordinates front road bone grafting or implants Invasive lumbar fusion device use, thereby increase the stability of spinal column front pillar and prevent deviating from of implant, soleplate fracture is subsided and the generation of tardy cervical kyphosis, promote diseased region bone-graft fusion, make cervical vertebra stability reconstruction better effects if after cervical intervertebral disk and vertebral resection, there is the advantages such as simple to operate, good stability, can ensure with the fusion of the decompression of minimum sections and minimum range of activity the physiological activity of spinal column.
brief description of the drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is a kind of schematic diagram of anterior plate fixation in the present invention.
Fig. 3 is the top view of Fig. 2.
Fig. 4 is a kind of structural representation of pressure cap in the present invention.
Fig. 5 is the left view of Fig. 4.
Fig. 6 is the right view of Fig. 4.
Fig. 7 is a kind of three-dimensional icon intention of the present invention.。
Detailed description of the invention
Below in conjunction with Fig. 1, the invention will be further described:
As shown in the figure, a kind of anterior plate fixation helicla flute locking device, comprise anterior plate fixation 1 and steel plate screw 2, anterior plate fixation 1 at least lower surface and cervical curvature matches, anterior plate fixation 1 is provided with countersunk head steel plate screw hole 3, in countersunk head steel plate screw hole 3, be provided with steel plate screw 2, the anterior plate fixation upper surface of countersunk head steel plate screw hole 3 one sides is provided with pressure cap groove 4, in pressure cap groove 4, be provided with locking hole 5, in pressure cap groove 4, be provided with the pressure cap 7 of locking pressure cap cover 6, the end face correspondence that pressure cap groove 4 and pressure cap 7 contact is provided with by deeply gradually shallow slideway and slide block 8, the pit of locking and projection 9 mutually, the cross section semicolumn by dark gradually shallow slideway and slide block 8 that end face that described pressure cap groove 4 and pressure cap 5 contact is corresponding or trapezoidal, the square polygon that waits, what end face that pressure cap groove and pressure cap contact was corresponding can be helicla flute, straight-line groove, oblique trunking, arc groove, different in nature wire casing etc. by the dark gradually track of shallow slideway, pressure cap 7 is provided with the location pressure handle 10 of steel plate screw 2 in countersunk head steel plate screw hole, location, described pressure cap 7 is provided with centre bore, in centre bore, be provided with locking pressure cap flange 11, locking pressure cap flange 11 presses and coordinates with the countersunk head steel plate screw hole on steel plate, make can carry out axial-rotation between pressure cap and steel plate, but can not carry out axial displacement, described anterior plate fixation 1 both sides are at least provided with two countersunk head steel plate screw holes 3 accordingly, anterior plate fixation 1 upper surface that countersunk head steel plate screw hole is 3 is provided with pressure cap groove 4, each pressure cap 7 is to be at least provided with two location pressure handles 10, to increase fixed effect, simplified structure, to make it compacter, to reduce to install width, the general inverted cone that adopts in countersunk head steel plate screw of the present invention hole 3, also can adopt trapezoidal, to coordinate pressure cap to position steel plate screw, the pit of mutual locking of the present invention or projection 9 are arranged on the pressure handle 10 of location,
The present invention is the anterior cervical plate fixing device for the treatment of human cervical spine disease, it mainly comprises steel plate and steel plate screw, anterior plate fixation profile and cervical curvature coincide, by steel plate and the laminating of cervical spondylosis position, steel plate is fixed on cervical spondylosis position by screw, by helicla flute pressure cap locking device on steel plate, screw is locked in case anti-avulsion goes out.
On steel plate, twist-lock structure forms by the steel plate with helical groove with the pressure cap of protruding sphere, its assembling mode is that pressure cap packs in steel plate pressure cap hole, protruding sphere on pressure cap part is placed in steel plate helical groove, pressure cap flange presses and coordinates with steel plate, make can carry out axial-rotation between pressure cap and steel plate, but can not carry out axial displacement.
Steel plate plays tension band effect while stretching, extension, when flexing, plays a supportive role, and can ensure the physiological activity of spinal column as far as possible and ensure its clinical effectiveness with the fusion of the decompression of minimum sections and minimum range of activity.Screw makes it combine closely with spinal vertebral and strengthen spinal stability for locking steel plate.It conventionally coordinates front road bone grafting or implants Invasive lumbar fusion device use, thereby increase the stability of spinal column front pillar and prevent deviating from of implant, soleplate fracture is subsided and the generation of tardy cervical kyphosis, promote diseased region bone-graft fusion, make cervical vertebra stability reconstruction better effects if after cervical intervertebral disk and vertebral resection.
On steel plate centered by the axle of steel plate pressure cap hole axle, on steel plate and the protruding sphere-contact track of pressure cap screw, cut a helicla flute, helicla flute is by going deep into shallow cut, is cut to spiral groove end place, steel plate arranges a concave spherical surface structure, and a protruding spherical structure is set on pressure cap.
Pressure cap is inserted in steel plate pressure cap hole, and pressure cap flange is pressed and coordinated with steel plate, and pressure cap cannot be deviate from.
In the time that pressure cap rotation apparatus rotates pressure cap, because the protruding sphere of pressure cap is placed in steel plate helicla flute, so when pressure cap turn, the protruding sphere of pressure cap can be along with helicla flute track be by going deep into shallow rotation, until spiral groove end, the protruding sphere of pressure cap can fall into spiral groove end steel plate concave spherical surface, plays the effect of pressure cap lock screw.
When the present invention uses, by steel plate and the laminating of cervical spondylosis position, steel plate is fixed on cervical spondylosis position by screw, the pressure cap cover of pressure cap is compressed into steel plate pressure cap groove locking hole, rotation pressure cap make pressure cap slide block along the slideway in pressure cap groove by deeply gradually shallow and locked by pit and projection, then pressure cap flange is pressed and coordinated with steel plate, make can carry out axial-rotation between pressure cap and steel plate, but can not carry out axial displacement, while utilizing steel plate to stretch, play tension band effect, when flexing, play a supportive role, can ensure the physiological activity of spinal column as far as possible and ensure its clinical effectiveness with the fusion of the decompression of minimum sections and minimum range of activity.Screw makes it combine closely with spinal vertebral and strengthen spinal stability for locking steel plate.It conventionally coordinates front road bone grafting or implants Invasive lumbar fusion device use, thereby increase the stability of spinal column front pillar and prevent deviating from of implant, soleplate fracture is subsided and the generation of tardy cervical kyphosis, promote diseased region bone-graft fusion, make cervical vertebra stability reconstruction better effects if after cervical intervertebral disk and vertebral resection, there is the advantages such as simple to operate, good stability, can ensure with the fusion of the decompression of minimum sections and minimum range of activity the physiological activity of spinal column.
Claims (8)
1. an anterior plate fixation helicla flute locking device, comprise anterior plate fixation and steel plate screw, at least lower surface and cervical curvature match to it is characterized in that anterior plate fixation, anterior plate fixation is provided with countersunk head steel plate screw hole, the anterior plate fixation upper surface of countersunk head steel plate screw hole one side is provided with pressure cap groove, in pressure cap groove, be provided with locking hole, in pressure cap groove, be provided with the pressure cap of locking pressure cap cover, the end face correspondence that pressure cap groove and pressure cap contact is provided with by deeply gradually shallow slideway and slide block, pit and the projection of locking mutually, pressure cap is provided with the location pressure handle of steel plate screw in countersunk head steel plate screw hole, location.
2. a kind of anterior plate fixation helicla flute locking device according to claim 1, it is characterized in that pressure cap is provided with centre bore, in centre bore, be provided with locking pressure cap flange, locking pressure cap flange presses and coordinates with the countersunk head steel plate screw hole on steel plate, make can carry out axial-rotation between pressure cap and steel plate, can not carry out axial displacement.
3. a kind of anterior plate fixation helicla flute locking device according to claim 1, it is characterized in that anterior plate fixation both sides are at least provided with two countersunk head steel plate screw holes accordingly, anterior plate fixation upper surface between countersunk head steel plate screw hole is provided with pressure cap groove, and each pressure cap is to be at least provided with two location pressure handles.
4. a kind of anterior plate fixation helicla flute locking device according to claim 1, is characterized in that countersunk head steel plate screw hole is inverted cone.
5. a kind of anterior plate fixation helicla flute locking device according to claim 1, is characterized in that the pit of locking mutually or projection are arranged on the pressure handle of location.
6. a kind of anterior plate fixation helicla flute locking device according to claim 1, it is characterized in that end face that pressure cap groove and pressure cap contact corresponding by dark gradually shallow slideway and cross section semicolumn or the polygon of slide block.
7. a kind of anterior plate fixation helicla flute locking device according to claim 1, it is characterized in that end face that pressure cap groove and pressure cap contact corresponding be helicla flute or arc groove or different in nature wire casing by the dark gradually track of shallow slideway.
8. a kind of anterior plate fixation helicla flute locking device according to claim 7, it is characterized in that end face that pressure cap groove and pressure cap contact corresponding by the dark gradually preferred helicla flute of track of shallow slideway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410147523.9A CN103932774A (en) | 2014-04-14 | 2014-04-14 | Locking device for spiral groove of anterior cervical steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410147523.9A CN103932774A (en) | 2014-04-14 | 2014-04-14 | Locking device for spiral groove of anterior cervical steel plate |
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| Publication Number | Publication Date |
|---|---|
| CN103932774A true CN103932774A (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410147523.9A Pending CN103932774A (en) | 2014-04-14 | 2014-04-14 | Locking device for spiral groove of anterior cervical steel plate |
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| CN (1) | CN103932774A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105342680A (en) * | 2015-10-13 | 2016-02-24 | 广州聚生生物科技有限公司 | Anterior cervical interbody steel plate cage integrated internal fixing system |
| CN109381249A (en) * | 2017-08-08 | 2019-02-26 | 索尔科生物医疗株式会社 | Cervical vertebrae fixer |
| CN109674522A (en) * | 2019-02-22 | 2019-04-26 | 苏州吉美瑞医疗器械股份有限公司 | A kind of anterior cervical vertebrae fixed system |
| CN109700577A (en) * | 2019-01-18 | 2019-05-03 | 北京市春立正达医疗器械股份有限公司 | Fusion device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040220571A1 (en) * | 1998-04-30 | 2004-11-04 | Richard Assaker | Bone plate assembly |
| US20050075633A1 (en) * | 2003-10-02 | 2005-04-07 | Thomas Ross | Anterior cervical plate |
| US20050187553A1 (en) * | 2001-08-24 | 2005-08-25 | Grabowski John J. | Bone fixation device |
| US7288094B2 (en) * | 2005-06-10 | 2007-10-30 | Sdgi Holdings, Inc. | System and method for retaining screws relative to a vertebral plate |
| US8118847B2 (en) * | 2005-03-08 | 2012-02-21 | K2M, Inc. | Anterior vertebral plate with underside locking mechanism |
| CN203790016U (en) * | 2014-04-14 | 2014-08-27 | 北京市奥斯比利克新技术开发有限公司 | Anterior cervical plate spiral groove locking device |
-
2014
- 2014-04-14 CN CN201410147523.9A patent/CN103932774A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040220571A1 (en) * | 1998-04-30 | 2004-11-04 | Richard Assaker | Bone plate assembly |
| US20050187553A1 (en) * | 2001-08-24 | 2005-08-25 | Grabowski John J. | Bone fixation device |
| US20050075633A1 (en) * | 2003-10-02 | 2005-04-07 | Thomas Ross | Anterior cervical plate |
| US8118847B2 (en) * | 2005-03-08 | 2012-02-21 | K2M, Inc. | Anterior vertebral plate with underside locking mechanism |
| US7288094B2 (en) * | 2005-06-10 | 2007-10-30 | Sdgi Holdings, Inc. | System and method for retaining screws relative to a vertebral plate |
| CN203790016U (en) * | 2014-04-14 | 2014-08-27 | 北京市奥斯比利克新技术开发有限公司 | Anterior cervical plate spiral groove locking device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105342680A (en) * | 2015-10-13 | 2016-02-24 | 广州聚生生物科技有限公司 | Anterior cervical interbody steel plate cage integrated internal fixing system |
| CN109381249A (en) * | 2017-08-08 | 2019-02-26 | 索尔科生物医疗株式会社 | Cervical vertebrae fixer |
| CN109700577A (en) * | 2019-01-18 | 2019-05-03 | 北京市春立正达医疗器械股份有限公司 | Fusion device |
| CN109674522A (en) * | 2019-02-22 | 2019-04-26 | 苏州吉美瑞医疗器械股份有限公司 | A kind of anterior cervical vertebrae fixed system |
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Application publication date: 20140723 |