CN205215456U - Cervical vertebra fusion device - Google Patents
Cervical vertebra fusion device Download PDFInfo
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- CN205215456U CN205215456U CN201521014076.6U CN201521014076U CN205215456U CN 205215456 U CN205215456 U CN 205215456U CN 201521014076 U CN201521014076 U CN 201521014076U CN 205215456 U CN205215456 U CN 205215456U
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- cervical vertebral
- lock screw
- fusion cage
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Abstract
The utility model discloses a cervical vertebra fusion device, including the locking screw with fuse the ware body, it is fixed to the cervical vertebra centrum in through the locking screw to fuse the ware body, and is provided with a plurality of pilot pins and a plurality of spacer pin on fusing the ware body, the pilot pin can be developed under the X -ray for the implantation position of the ware body is fused in control, fuse the ware body for the ring column structure, the through -hole is for planting bone hole among them, and including annular anterior segment and canned paragraph two parts, annular anterior segment includes upper and lower surface and lateral wall, and annular anterior segment is provided with first locating hole, and the intermediate position of canned paragraph is provided with the screw hole, screw hole and plant bone hole and be linked together, the upper and lower broadside on of screw hole calls to be provided with the mounting hole, and the outside is provided with the recess, is provided with the second locating hole on the groove face of the recess left and right sides. The utility model discloses cervical vertebra fusion device is rational in infrastructure, and it is convenient, stable firm to install, and the tooth structure is described to the arris on its upper and lower surface, can realize the instant stability after the implantation, can promote again to fuse to can be fine maintain cervical vertebra physiological curvature.
Description
Technical field
This utility model relates to orthopedic medical device technical field, particularly relates 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.
Utility model content
The purpose of this utility model is to provide a kind of cervical vertebral fusion cage, solves autologous bone limited source, increases for district's wound, can not provide mechanically stable timely; 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, this utility model adopts following technical scheme:
A kind of cervical vertebral fusion cage of this utility model, 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 utility model:
This utility model cervical vertebral fusion cage, 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, this utility model cervical vertebral fusion cage 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 utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is this utility model cervical vertebral fusion cage structural representation (broken section);
Fig. 2 is this utility model lock screw structural representation;
Fig. 3 is this utility model fusion device body structure schematic diagram;
Fig. 4 is that this utility model merges body schematic front view (broken section);
Fig. 5 is that this utility model merges body top view;
Fig. 6 is that this utility model merges body right view;
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 utility model 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 utility model; not scope of the present utility model is limited; under the prerequisite not departing from this utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that this utility model claims determine.
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 |
|---|---|---|---|
| CN201521014076.6U CN205215456U (en) | 2015-12-09 | 2015-12-09 | Cervical vertebra fusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521014076.6U CN205215456U (en) | 2015-12-09 | 2015-12-09 | Cervical vertebra fusion device |
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| Publication Number | Publication Date |
|---|---|
| CN205215456U true CN205215456U (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521014076.6U Active CN205215456U (en) | 2015-12-09 | 2015-12-09 | Cervical vertebra fusion device |
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| CN (1) | CN205215456U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105361981A (en) * | 2015-12-09 | 2016-03-02 | 北京市富乐科技开发有限公司 | Cervical fusion apparatus |
| CN106166091A (en) * | 2016-07-28 | 2016-11-30 | 复旦大学附属中山医院 | A kind of degradable self-locking cervical vertebral fusion cage and preparation method thereof |
-
2015
- 2015-12-09 CN CN201521014076.6U patent/CN205215456U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105361981A (en) * | 2015-12-09 | 2016-03-02 | 北京市富乐科技开发有限公司 | Cervical fusion apparatus |
| CN105361981B (en) * | 2015-12-09 | 2018-01-26 | 北京市富乐科技开发有限公司 | A kind of cervical vertebral fusion cage |
| CN106166091A (en) * | 2016-07-28 | 2016-11-30 | 复旦大学附属中山医院 | A kind of degradable self-locking cervical vertebral fusion cage and preparation method thereof |
| CN106166091B (en) * | 2016-07-28 | 2018-07-31 | 花沐医疗技术服务(上海)有限公司 | It is a kind of degradable from locking cervical vertebral fusion cage and preparation method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170124 Address after: 100000 West Beijing District of Pinggu City Mafang Industrial Zone No. 50 Patentee after: Beijing Fule Science & Technology Development Co., Ltd. Patentee after: Hu Huanyu Address before: 101204 West Beijing District of Pinggu City Mafang Industrial Zone No. 50 Patentee before: Hu Huanyu |