CN105361981A - Cervical fusion apparatus - Google Patents
Cervical fusion apparatus Download PDFInfo
- Publication number
- CN105361981A CN105361981A CN201510903290.5A CN201510903290A CN105361981A CN 105361981 A CN105361981 A CN 105361981A CN 201510903290 A CN201510903290 A CN 201510903290A CN 105361981 A CN105361981 A CN 105361981A
- Authority
- CN
- China
- Prior art keywords
- hole
- lock screw
- cervical vertebral
- groove
- fusion cage
- 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.)
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
Abstract
The invention discloses a cervical fusion apparatus, comprising a lock screw and a fusion apparatus body. The fusion apparatus body is fixed in cervical vertebra through the lock screw and is provided with a plurality of positioning pins and a plurality of limiting pins. The positioning pins can be developed in X-ray and used for controlling an implantation position of the fusion apparatus body. The fusion apparatus body is in a ring structure, a middle through hole of which is a bone grafting hole, and comprises a circular front segment and a fixing segment, the circular front segment comprises an upper surface, a lower surface and a sidewall, the circular front segment is provided with a first positioning hole, the middle of the fixing segment is provided with a threaded hole, and the threaded hole is communicated with the bone grafting hole; the upper and lower sides of the threaded hole are symmetrically provided with mounting holes, a groove is provided in the outside of the threaded hole, and left and right groove sides of the groove are provided with second positioning holes. The cervical fusion apparatus is reasonable in structure, convenient to mount and stable and firm, and the upper and lower surfaces of the apparatus are of rib tooth structures, allowing instant stability after implanting, promoting fusion and keeping well cervical physiological curvature.
Description
Technical field
The present invention relates to orthopedic medical device technical field, particularly relate to a kind of cervical vertebral fusion cage.
Background technology
Interbody fusion is one of method for the treatment of spinal disease, and annual increasing crowd accepts the treatment of interbody fusion.Interbody fusion comprises autologous bone transplanting and merges and allogenic bone transplantation fusion, due to autologous bone limited source, increase for district wound, can not provide the shortcoming such as mechanically stable timely that the clinical practice of interbody fusion is restricted, and allogenic bone transplantation not only costly, limited amount but also the virus disseminating caused by allograph bone and immunologic rejection be also affect its main cause in wide clinical application.Therefore, how to develop a kind of novel cervical vertebral fusion cage, to solve autologous bone limited source, increase for district's wound, mechanically stable timely can not be provided; Allogenic bone transplantation costly, limited amount, and allograph bone easily causes the problem of virus disseminating and immunologic rejection, becomes the difficult problem that those skilled in the art are urgently to be resolved hurrily.
Summary of the invention
The object of this invention is to provide a kind of cervical vertebral fusion cage, solve autologous bone limited source, increase for district's wound, mechanically stable timely can not be provided; Allogenic bone transplantation costly, limited amount, and allograph bone easily causes the problem of virus disseminating and immunologic rejection.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of cervical vertebral fusion cage of the present invention, comprise lock screw and merge body, described fusion body is fixed in cervical vertebral body by described lock screw, and fusion body is provided with multiple positioning needle and multiple spacer pin, described positioning needle can be developed under X-ray, for controlling the implantation position of described fusion body, described spacer pin is used for preventing described lock screw from deviating from;
Described fusion body is for referring to circulus, and the intermediate throughholes of described finger circulus is bone grafting hole, is filled with fragment or pulverous implant in described bone grafting hole; Described finger circulus comprises annular leading portion and canned paragraph two parts, described annular leading portion comprises upper and lower surface and sidewall, annular leading portion is provided with the first locating hole installing described positioning needle, described canned paragraph is provided with perpendicular to the centre position of sidewall direction the screwed hole matched with implantation instrument, and described screwed hole is connected with described bone grafting hole; The upper and lower sides of described screwed hole is symmetrically arranged with the installing hole for installing described lock screw, and the arranged outside of screwed hole is fluted, the groove face of the described groove left and right sides is provided with the second locating hole for installing described spacer pin.
Further, described lock screw comprises the head of a nail, rivet nut and nail tail, and the periphery of the described head of a nail is sphere, and the bottom center of the head of a nail is provided with mounting groove, and the surface of described rivet nut is provided with taper thread, and described nail tail is provided with cutting edge.
Further, described mounting groove is specially rectangular channel, cross recess, flat recess or hex slot.
Further, the upper and lower surface of the front end of described fusion body ring body is provided with prismatic tooth, and described prismatic tooth is provided with multiple and uniform side by side.
Further, the upper and lower surface of described annular leading portion is with by-level face for symmetrical plane is symmetrical arranged, and the angle on upper and lower surface is α, and described α is set to 2 ~ 6 °.
Further, described installing hole is set to shoulder hole, and the size of described shoulder hole and the head of a nail of described lock screw and rivet nut match.
Further, two described installing holes are with by-level face for symmetrical plane is symmetrical arranged, and the axial line of installing hole and by-level face angle are β, and the angle of described β is 20 ~ 30 °.
Further, described first locating hole vertically runs through described upper and lower surface, and its magnitude setting is 3, and one of them is positioned at the center, left side of described annular leading portion, and two other is positioned at the right end of described annular leading portion; Described second locating hole is arranged vertically on the groove face of the described groove left and right sides, and on its each groove face, magnitude setting is 2.
Further, the left and right sides of described groove is provided with slotted eye, and the setting direction of described slotted eye is vertical with the centerline direction of the second locating hole on groove face.
Further, described lock screw adopts titanium alloy material, and described fusion body adopts polyetheretherketonematerials materials.
Compared with prior art, Advantageous Effects of the present invention:
Cervical vertebral fusion cage of the present invention, during operation, body will be merged implant, fusion body is fixed on cervical vertebral body through installing hole by lock screw, wherein merge in the bone grafting hole in the middle of body and be filled with fragment or pulverous implant, under axial compressive force effect, make polyether-ether-ketone merge body and cervical vertebral body close contact, promote to merge; And positioning needle and spacer pin is provided with on fusion body, wherein positioning needle can be developed under X-ray, makes the position of being convenient to during operation accurately determine to merge body; Spacer pin is used for preventing described lock screw from deviating from.
In addition, the upper and lower surface of the front end of described fusion body ring body is provided with prismatic tooth, and prismatic tooth is provided with multiple and uniform side by side, and after implanting lamina of cervical vertebra, increasing friction force, prevents slippage; And the angle of upper and lower surface and horizontal centre plane is α, described α is set to 2 ~ 6 °, to increase hold, strengthens the stability merging body and implant further, makes the connection of fusion body and cervical vertebra more firm, reaches immediately stable object; The bottom center of the head of a nail of lock screw is provided with mounting groove, is convenient to apparatus and holds; The surface of rivet nut is provided with taper thread, adds hold, improves resistance to plucking output capacity; Nail tail is provided with cutting edge, and during operation, lock screw implantation vertebral body is convenient and swift.
In sum, cervical vertebral fusion cage of the present invention is rational in infrastructure, installs convenient, firmly stable, the prismatic toothing on its upper and lower surface, can realize immediately stablizing after implanting, can promote again to merge, and well can maintain cervical curvature.
Accompanying drawing explanation
Illustrate that the invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is cervical vertebral fusion cage structural representation (broken section) of the present invention;
Fig. 2 is lock screw structural representation of the present invention;
Fig. 3 is fusion device body structure schematic diagram of the present invention;
Fig. 4 is that body schematic front view (broken section) is merged in the present invention;
Fig. 5 is that body top view is merged in the present invention;
Fig. 6 is that body right view is merged in the present invention;
Description of reference numerals: 1, positioning needle; 2, lock screw; 3, body is merged; 4, spacer pin; 5, the head of a nail; 6, mounting groove; 7, rivet nut; 8, tail is followed closely; 9, prismatic tooth; 10, bone grafting hole; 11, the first locating hole; 12, installing hole; 13, screwed hole; 14, groove; 15, the second locating hole; 16, slotted eye.
Detailed description of the invention
As shown in figs. 1 to 6, a kind of cervical vertebral fusion cage, comprise lock screw 2 and merge body 3, described fusion body 3 is fixed in cervical vertebral body by described lock screw 2, and fusion body 3 is provided with multiple positioning needle 1 and multiple spacer pin 4, described positioning needle 1 can be developed under X-ray, and for controlling the implantation position of described fusion body 3, described spacer pin 4 is deviate from for preventing described lock screw 2;
Described fusion body 3 is for referring to circulus, and the intermediate throughholes of described finger circulus is bone grafting hole 10, is filled with fragment or pulverous implant in described bone grafting hole 10; Described finger circulus comprises annular leading portion and canned paragraph two parts, described annular leading portion comprises upper and lower surface and sidewall, annular leading portion is provided with the first locating hole 11 installing described positioning needle 1, described canned paragraph is provided with perpendicular to the centre position of sidewall direction the screwed hole 13 matched with implantation instrument, and described screwed hole 13 is connected with described bone grafting hole 10; The upper and lower sides of described screwed hole 13 is symmetrically arranged with the installing hole 12 for installing described lock screw 2, the arranged outside fluted 14 of screwed hole 13, the groove face of described groove 14 left and right sides is provided with the second locating hole 15 for installing described spacer pin 4.
As shown in Figure 2, described lock screw 2 comprises the head of a nail 5, rivet nut 7 and nail tail 8, and the periphery of the described head of a nail 5 is sphere, and the bottom center of the head of a nail 5 is provided with mounting groove 6, is convenient to apparatus holding and lock screw 2 is implanted in fusion body 3; The surface of described rivet nut 7 is provided with taper thread, adds hold, improves resistance to plucking output capacity; Described nail tail 8 is provided with cutting edge, and during convenient operation, lock screw 2 implants vertebral body; Described mounting groove 6 is specially rectangular channel, cross recess, flat recess or hex slot, and be applicable to the erecting tools of plurality of specifications, practicality is stronger.
As shown in Figure 3, Figure 4, the upper and lower surface of the front end of described fusion body 3 ring body is provided with prismatic tooth 9, and described prismatic tooth 9 is provided with multiple and uniform side by side, and after implanting lamina of cervical vertebra, increasing friction force, prevents slippage.The upper and lower surface of described annular leading portion is with by-level face for symmetrical plane is symmetrical arranged, and the angle on upper and lower surface is α, and described α is set to 2 ~ 6 °, preferentially select 4 °, to increase hold, prevent from merging deviating from of body 3, increase the stability merging body and implant further.
As shown in Figure 4, described installing hole 12 is set to shoulder hole, and the size of described shoulder hole and the head of a nail 5 of described lock screw 2 and rivet nut 7 match.Two described installing holes 12 are with by-level face for symmetrical plane is symmetrical arranged, and the axial line of installing hole 12 and by-level face angle are β, and the angle of described β is 20 ~ 30 °, can preferentially select 25 °.
As shown in Figure 5, described first locating hole 11 vertically runs through described upper and lower surface, its magnitude setting is 3, one of them is positioned at the center, left side of described annular leading portion, two other is positioned at the right end of described annular leading portion, and during operation, the positioning needle 1 that can develop inserts the first locating hole 11, handled easily, accurately controls the position of implanting; Described second locating hole 15 is arranged vertically on the groove face of described groove 14 left and right sides, and on its each groove face, magnitude setting is 2, during assembling, and spacer pin 4 inserts the second locating hole 15 and deviates to prevent described lock screw 2.
As shown in Figure 6, the left and right sides of described groove 14 is provided with slotted eye 16, the setting direction of described slotted eye 16 is vertical with the centerline direction of the second locating hole 15 on groove face, during assembling, first mounting limit pin 4, then elliptical hole 16 is processed into the two ends, left and right of end face, can prevents spacer pin 4 from installing and stablize not deviate from.
Described lock screw 2 adopts titanium alloy material, and described fusion body 3 adopts polyether-ether-ketone (PEEK) material; Wherein polyetheretherketonematerials materials has high temperature resistant, self-lubricating, the easily excellent properties such as processing and high mechanical properties special engineering plastics, and has good blending with human body, successfully instead of traditional titanium as artificial bone.Merge body 3 prioritizing selection PEEK material, secondly can select titanium alloy material.
Course of action of the present invention is as follows:
During operation, first otch outside neck, appear lesion locations, after preliminary treatment completes, fusion body 3 is implanted, fusion body 3 is fixed on cervical vertebral body through installing hole 12 by lock screw 2, wherein merges in the bone grafting hole 10 in the middle of body 3 and fills fragment or pulverous implant, under axial compressive force effect, make PEEK merge body 3 and cervical vertebral body close contact, promote to merge; The prismatic tooth on its upper and lower surface, can effectively prevent from merging deviating from of body 3.During assembling, the positioning needle 1 that can develop inserts the first locating hole 11, accurately can control the position of merging body 3 implantation; Mounting limit pin 4 on the groove face of groove 14, for preventing described lock screw 2 from deviating from, is then processed into elliptical hole 16 to the two ends, left and right of end face, can prevent spacer pin 4 from installing and stablize not deviate from.
Above-described embodiment is only be described optimal way of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (10)
1. a cervical vertebral fusion cage, it is characterized in that: comprise lock screw (2) and merge body (3), described fusion body (3) is fixed in cervical vertebral body by described lock screw (2), and fusion body (3) is provided with multiple positioning needle (1) and multiple spacer pin (4), described positioning needle (1) can be developed under X-ray, for controlling the implantation position of described fusion body (3), described spacer pin (4) is deviate from for preventing described lock screw (2);
Described fusion body (3) is for referring to circulus, and the intermediate throughholes of described finger circulus is bone grafting hole (10), is filled with fragment or pulverous implant in described bone grafting hole (10); Described finger circulus comprises annular leading portion and canned paragraph two parts, described annular leading portion comprises upper and lower surface and sidewall, annular leading portion is provided with the first locating hole (11) installing described positioning needle (1), described canned paragraph is provided with perpendicular to the centre position of sidewall direction the screwed hole (13) matched with implantation instrument, and described screwed hole (13) is connected with described bone grafting hole (10); The upper and lower sides of described screwed hole (13) is symmetrically arranged with the installing hole (12) for installing described lock screw (2), the arranged outside of screwed hole (13) is fluted (14), the groove face of described groove (14) left and right sides is provided with the second locating hole (15) for installing described spacer pin (4).
2. cervical vertebral fusion cage according to claim 1, it is characterized in that: described lock screw (2) comprises the head of a nail (5), rivet nut (7) and nail tail (8), the periphery of the described head of a nail (5) is sphere, the bottom center of the head of a nail (5) is provided with mounting groove (6), the surface of described rivet nut (7) is provided with taper thread, and described nail tail (8) is provided with cutting edge.
3. cervical vertebral fusion cage according to claim 2, is characterized in that: described mounting groove (6) is specially rectangular channel, cross recess, flat recess or hex slot.
4. cervical vertebral fusion cage according to claim 1, is characterized in that: the upper and lower surface of the front end of described fusion body (3) ring body is provided with prismatic tooth (9), and described prismatic tooth (9) is provided with multiple and uniform side by side.
5. the cervical vertebral fusion cage according to claim 1 or 4, is characterized in that: the upper and lower surface of described annular leading portion is with by-level face for symmetrical plane is symmetrical arranged, and the angle on upper and lower surface is α, and described α is set to 2 ~ 6 °.
6. cervical vertebral fusion cage according to claim 1, it is characterized in that: described installing hole (12) is set to shoulder hole, the size of described shoulder hole and the head of a nail (5) of described lock screw (2) and rivet nut (7) match.
7. the cervical vertebral fusion cage according to claim 1 or 6, it is characterized in that: two described installing holes (12) with by-level face for symmetrical plane is symmetrical arranged, and the axial line of installing hole (12) and by-level face angle are β, the angle of described β is 20 ~ 30 °.
8. cervical vertebral fusion cage according to claim 1, it is characterized in that: described first locating hole (11) vertically runs through described upper and lower surface, its magnitude setting is 3, one of them is positioned at the center, left side of described annular leading portion, and two other is positioned at the right end of described annular leading portion; Described second locating hole (15) is arranged vertically on the groove face of described groove (14) left and right sides, and on its each groove face, magnitude setting is 2.
9. cervical vertebral fusion cage according to claim 1, it is characterized in that: the left and right sides of described groove (14) is provided with slotted eye (16), the setting direction of described slotted eye (16) is vertical with the centerline direction of the second locating hole (15) on groove face.
10. cervical vertebral fusion cage according to claim 1, is characterized in that: described lock screw (2) adopts titanium alloy material, and described fusion body (3) adopts polyetheretherketonematerials materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510903290.5A CN105361981B (en) | 2015-12-09 | 2015-12-09 | A kind of cervical vertebral fusion cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510903290.5A CN105361981B (en) | 2015-12-09 | 2015-12-09 | A kind of cervical vertebral fusion cage |
Publications (2)
| Publication Number | Publication Date |
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| CN105361981A true CN105361981A (en) | 2016-03-02 |
| CN105361981B CN105361981B (en) | 2018-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510903290.5A Active CN105361981B (en) | 2015-12-09 | 2015-12-09 | A kind of cervical vertebral fusion cage |
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| CN (1) | CN105361981B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107693169A (en) * | 2017-09-16 | 2018-02-16 | 武汉光谷北宸医疗器械有限公司 | Wedged accommodating intraocular centrum |
| CN108577911A (en) * | 2018-05-22 | 2018-09-28 | 黄建明 | A kind of riveting device for fixing high intensity suture |
| CN108852563A (en) * | 2018-04-12 | 2018-11-23 | 深圳清华大学研究院 | Zero incisura Invasive lumbar fusion device of anterior cervical vertebrae |
| CN110101447A (en) * | 2019-05-22 | 2019-08-09 | 西安市红会医院 | A kind of special fixing device meeting cervical spine chest section anatomy and biomethanics |
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| CN102488574A (en) * | 2011-12-09 | 2012-06-13 | 中国科学院深圳先进技术研究院 | Interbody fusion cage |
| US20130123925A1 (en) * | 2005-05-06 | 2013-05-16 | Titan Spine, Llc | Self-deploying locking screw retention device |
| CN203693841U (en) * | 2014-01-07 | 2014-07-09 | 创生医疗器械（中国）有限公司 | Dynamic cervical vertebra locking interbody fusion apparatus |
| CN203841856U (en) * | 2014-04-09 | 2014-09-24 | 创辉医疗器械江苏有限公司 | Cervical vertebra fusion device |
| CN203988506U (en) * | 2014-07-18 | 2014-12-10 | 山东威高骨科材料有限公司 | Anterior cervical vertebrae zero incisura inter vertebral fusing device |
| CN205215456U (en) * | 2015-12-09 | 2016-05-11 | 胡桓宇 | Cervical vertebra fusion device |
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2015
- 2015-12-09 CN CN201510903290.5A patent/CN105361981B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20130123925A1 (en) * | 2005-05-06 | 2013-05-16 | Titan Spine, Llc | Self-deploying locking screw retention device |
| CN102488574A (en) * | 2011-12-09 | 2012-06-13 | 中国科学院深圳先进技术研究院 | Interbody fusion cage |
| CN203693841U (en) * | 2014-01-07 | 2014-07-09 | 创生医疗器械（中国）有限公司 | Dynamic cervical vertebra locking interbody fusion apparatus |
| CN203841856U (en) * | 2014-04-09 | 2014-09-24 | 创辉医疗器械江苏有限公司 | Cervical vertebra fusion device |
| CN203988506U (en) * | 2014-07-18 | 2014-12-10 | 山东威高骨科材料有限公司 | Anterior cervical vertebrae zero incisura inter vertebral fusing device |
| CN205215456U (en) * | 2015-12-09 | 2016-05-11 | 胡桓宇 | Cervical vertebra fusion device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107693169A (en) * | 2017-09-16 | 2018-02-16 | 武汉光谷北宸医疗器械有限公司 | Wedged accommodating intraocular centrum |
| CN108852563A (en) * | 2018-04-12 | 2018-11-23 | 深圳清华大学研究院 | Zero incisura Invasive lumbar fusion device of anterior cervical vertebrae |
| CN108577911A (en) * | 2018-05-22 | 2018-09-28 | 黄建明 | A kind of riveting device for fixing high intensity suture |
| CN110101447A (en) * | 2019-05-22 | 2019-08-09 | 西安市红会医院 | A kind of special fixing device meeting cervical spine chest section anatomy and biomethanics |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105361981B (en) | 2018-01-26 |
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