CN202619827U - Anterior cervical dynamic universal locking steel plate - Google Patents
Anterior cervical dynamic universal locking steel plate Download PDFInfo
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- CN202619827U CN202619827U CN 201220195891 CN201220195891U CN202619827U CN 202619827 U CN202619827 U CN 202619827U CN 201220195891 CN201220195891 CN 201220195891 CN 201220195891 U CN201220195891 U CN 201220195891U CN 202619827 U CN202619827 U CN 202619827U
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- macropore
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- groove
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Abstract
The utility model relates to an anterior cervical dynamic universal locking steel plate which is characterized by comprising matched steel plates capable of moving relatively, clamping rings, limit pins, connecting pins and a limit removing block. The matched steel plates capable of moving relatively are connected through the connecting pins, the clamping rings are installed in large holes of the matched steel plates and can rotate, the limit pins are installed in small holes of the matched steel plates so as to limit movement of the clamping rings, the limit removing block is clamped between the matched steel plates so as to prevent the matched steel plates to move mutually before the matched steel plates are implanted, and the limit removing block needs to be taken out in operation. The anterior cervical dynamic universal locking steel plate has the advantage of having the advantages of the dynamic steel plates, allowing tiny movement of the steel plates, reducing stress shielding of implanted bone blocks between vertebral bodies, being matched with a locking screw to be used, allowing angle variation of the implanted screw at a certain range, and being capable of achieving universal locking.
Description
[technical field]
This utility model relates to the orthopedic medical device technical field, specifically, is a kind of cervical vertebra dynamic universal locking steel plate that is used for internal fixation of spine.
[background technology]
Since Bohler reported first in 1964 with anterior plate fixation since anterior cervical operation; Along with the continuous development that spinal surgery is learned and internal fixation is technological; Anterior plate fixation has been widely used in the treatment of cervical vertebra degeneration, exogenous injury or dislocation, deformity and tumor etc. at present; It is to strengthening the stability of postoperative cervical vertebra, reduces effectively that plant bone mass is shifted, the soleplate fracture is subsided and the tardy odd-shaped generation of trachelokyphosis, promotes the diseased region bone-graft fusion to obtain good result.
At present, the throat road steel plate system of using clinically comprises two big types: firm static and dynamic property.Firm static steel plate such as Orion,, steel plate systems such as CSLP can provide strong fixing.Steel plate systems such as dynamic property steel plate such as Codman, Premier, Doc, ABC; Not only immediate postoperative stability can be provided; And can make from the weight of head and the axial load of musculi colli and transmit downwards through plant bone mass, can reduce the stress shielding of interbody bone graft piece, improve fusion rate of bone graft; Prevent pseudoarticulation formation, so clinical practice obtains gradually paying attention to.
The present dynamic steel plate of domestic rarely seen this type of anterior cervical vertebrae.
[utility model content]
The purpose of this utility model is to provide a kind of anterior cervical vertebrae dynamic universal locking steel plate, is used for single-unit or multi-segmental cervical spinal fusion.It not only has the advantage of dynamic steel plate, the small motion of permission steel plate, and the stress shielding of minimizing interbody bone graft piece, and the use of this utility model cooperation lock screw, and allow certain limit to be implanted into the angle variation of screw, be suitable for different crowd.
The purpose of this utility model realizes through following technical scheme:
A kind of anterior cervical vertebrae dynamic universal locking steel plate is made up of the steel plate that matches, snap ring, connecting pin, spacer pin and the spacing piece that removes that allow relative motion; Link to each other through connecting pin between the coupling steel plate of motion each other; Snap ring is installed in the macropore of coupling steel plate; Spacer pin is installed in the aperture of coupling steel plate; The spacing piece that removes is stuck between the coupling steel plate.
The coupling steel plate of described permission relative motion has two coupling steel plate I and II at least, and to the difference of different patient vertebral bodys, its size is provided with a plurality of specifications.For the operation of multi-segmental, needing increases coupling steel plate II I or IV, according to vertebral body difference, is equipped with a plurality of specifications.Described coupling steel plate I, the one of which end is provided with insertion end, and insertion end is provided with connecting hole, is used for mating with connecting pin; Circle blunt I in steel plate other end edge is provided with two symmetric combination bore, and combination bore is made up of a macropore I and an aperture I, has overlappingly between macropore I and aperture I, is provided with spherical groove in the macropore I, and with the snap ring coupling, aperture I and spacer pin mate; Steel plate upper surface I and lower surface I all are arcuation, mate with vertebral body.
Described coupling steel plate II, the one of which end is provided with insertion groove, and groove is provided with a circular runway hole, matees with connecting pin; Circle blunt II in steel plate other end edge which is provided with two symmetric combination bore, and combination bore is made up of a macropore II and an aperture II, has overlappingly between macropore II and aperture II, is provided with spherical groove in the macropore II, and with the snap ring coupling, aperture II and spacer pin mate; Steel plate upper surface II and lower surface II all are arcuation, mate with vertebral body.
Described coupling steel plate II I or IV, its two ends are provided with insertion groove, are respectively equipped with a circular runway hole on the groove, mate with connecting pin.Steel plate is provided with symmetric one or more groups combination bore, and combination bore is made up of a macropore and an aperture, has overlappingly between macropore and aperture, is provided with spherical groove in the macropore, is used for and the snap ring coupling, and aperture is used for mating with spacer pin; Steel plate upper surface and lower surface all are arcuation, mate with vertebral body; Can establish visual windows on it.The two ends insertion groove cooperates the insertion end of coupling steel plate I, and connects through connecting pin, is applicable to the multi-segmental operation.According to the difference of patient vertebral body, coupling steel plate II I or V can establish a plurality of specifications.
Described snap ring is provided with a breach, is the C type; Outer surface is spherical in shape, with the spherical groove coupling in the macropore that matees on the steel plate; Inwall is provided with screw thread, and the end directly is tapering, and horn mouth is multiple thread up.
Described connecting pin, diameter matees with the hole that coupling steel plate I goes up insertion end, and length is slightly less than steel plate thickness greater than insertion end thickness.
Described spacer pin, with coupling steel plate I and the aperture I and the aperture II coupling of mating on the steel plate II, length is slightly less than steel plate thickness.
The described spacing piece that removes which is provided with and mate the groove that steel plate I insertion end is complementary, and being provided with one in the groove increases elastic groove, and an end is provided with the convexity of being convenient to remove.
Described lock screw; The lock screw head is provided with the external screw thread that is tapering with snap ring female thread coupling; Apical head is provided with inner hexagonal hole or plum blossom hole; The nail body is provided with that external screw thread, nail body tip can be provided with the self tapping groove or from drill flute, thereby establishes common lock screw, self tapping lock screw and bore three kinds of models of lock screw certainly.
Link to each other through connecting pin between the coupling steel plate that this utility model moves each other; Snap ring is installed in the macropore of coupling steel plate, can realize rotation; Spacer pin is installed in the aperture of coupling steel plate, with the motion of restriction snap ring; The spacing piece that removes is stuck between the coupling steel plate, prevents to mate the mutual motion of steel plate before implantation, needs in the art to take out.
This utility model is because snap ring and coupling steel plate design, and snap ring can be at the steel plate internal rotation, thereby makes screw implant the rear to changing within the specific limits, has universal function; On the other hand, snap ring inwall female thread cooperates with lock screw head external screw thread, and after lock screw was implanted, because the cause of core diameter of thread tapering, snap ring was strutted, thereby fixes with steel plate, has realized lock function; Moreover cooperate through connecting pin between the coupling steel plate, realized dynamic function.So far this utility model is a kind of dynamic universal locking steel plate on function.
This utility model cooperates lock screw to use, and according to the difference of following closely the body thread size plurality of specifications can be arranged, and is furnished with the nail body of different-diameter and length, is applicable to different occasions.This utility model can be used from brill, self tapping and overhaul screw.
This utility model can be applicable to technical fields such as internal fixation of spine.
Compared with prior art, the good effect of this utility model is:
(1) this utility model has the advantage of dynamic steel plate, allows the small motion of steel plate, reduces the stress shielding of interbody bone graft piece;
(2) this utility model cooperates lock screw to use, and allows certain limit to be implanted into the angle variation of screw, can realize universal lock.
[description of drawings]
Fig. 1 this utility model system schematic;
Fig. 2 A coupling steel plate I schematic three dimensional views one;
Fig. 2 B coupling steel plate I schematic three dimensional views two;
Fig. 3 A coupling steel plate II schematic three dimensional views one;
Fig. 3 B coupling steel plate II schematic three dimensional views two;
Fig. 3 C coupling steel plate II schematic three dimensional views three;
Fig. 4 this utility model assembly 3---snap ring sketch map;
Fig. 5 this utility model assembly 6---the spacing piece sketch map that removes;
Lock screw 7 sketch maps of Fig. 6 this utility model coupling;
Fig. 7 A this utility model normalized form one sketch map;
Fig. 7 B this utility model normalized form two sketch maps;
Fig. 7 C this utility model normalized form three sketch maps.
Label in the accompanying drawing is respectively: 1, coupling steel plate I, 11, the blunt I of edge circle, 12, insertion end, 13, connecting hole, 14, the macropore I; 15, aperture I, 16, the upper surface I, 17 lower surface I, 2, the coupling steel plate II, 21, the blunt II of edge circle, 22, insertion groove; 23, circular runway hole, 24, the macropore II, 25, the aperture II, 26, upper surface II, 27, lower surface II, 3, snap ring; 31, breach, 32, sphere, 33, be the female thread of tapering, 4, spacer pin, 5, connecting pin, 6, the spacing piece that removes; 61, groove, 62, convexity, 63, groove, 71, be the external screw thread of tapering, 72, inner hexagonal hole or plum blossom hole; 73, nail extracorporeal thread, 74, the self tapping groove, 8, coupling steel plate II I, 9 coupling steel plate IV, 91, visual window.
[specific embodiment]
The specific embodiment of a kind of anterior cervical vertebrae dynamic universal of this utility model locking steel plate below is provided.
Accompanying drawing 1 is the assembling sketch map of this utility model, and accompanying drawing 2 to accompanying drawing 6 is this utility model component drawings, and accompanying drawing 7 is the multi-form sketch map of this utility model.
Like accompanying drawing 1, a kind of anterior cervical vertebrae dynamic universal of this utility model locking steel plate is made up of with coupling steel plate II 2, snap ring 3, spacer pin 4, connecting pin 5 and the spacing piece 6 that removes the steel plate I 1 that is complementary that allows relative motion.Each other 2 of the coupling steel plate I 1 of motion and coupling steel plate II link to each other through connecting pin 5; Snap ring 3 places in the macropore I14 and macropore II 24 of coupling steel plate I 1 and coupling steel plate II 2; In the connecting hole 13 and circular runway hole 23 of spacer pin 4 installations and coupling steel plate I 1 and coupling steel plate II 2, to limit the motion of screw; The spacing piece 6 that removes is stuck between coupling steel plate I 1 and the coupling steel plate II 2, prevents to mate steel plate I 1 and the mutual motion of coupling steel plate II 2 before implantation, needs in the art to take out.
Like accompanying drawing 2, described wherein coupling steel plate I1, the one of which end is provided with insertion end 12, and insertion end is provided with connecting hole 13, is used for and connecting pin 5 couplings; Circle blunt I 11 in steel plate other end edge is provided with two symmetric combination bore, and combination bore is made up of a macropore I 14 and an aperture I 15, has overlappingly between macropore I and aperture I, is provided with spherical groove in the macropore I, and with the snap ring coupling, aperture I 15 and spacer pin mate; Steel plate upper surface I 16 all is arcuation with lower surface I 17, matees with vertebral body.
Like accompanying drawing 3, described wherein another piece coupling steel plate II 2, the one of which end is provided with insertion groove 22, and groove is provided with a circular runway hole 23, with connecting pin 5 couplings; Circle blunt II 21 in steel plate other end edge which is provided with two symmetric combination bore, and combination bore is made up of a macropore II 24 and an aperture II 25; Have overlapping between macropore II 24 and aperture II25; Be provided with spherical groove in the macropore II 24, with snap ring 3 couplings, aperture II 25 and spacer pin coupling; Steel plate upper surface II 26 and lower surface II 27 all are arcuation, mate with vertebral body.
Like accompanying drawing 4, described snap ring 3 is provided with a breach 31, is the C type; Outer surface is spherical in shape 32, with the spherical groove coupling in the macropore on coupling steel plate I, coupling steel plate II, coupling steel plate II I and the coupling steel plate IV; Inwall is provided with screw thread 33, and the end directly is tapering, and horn mouth is multiple thread up.
Described connecting pin 5, diameter matees with the hole that coupling steel plate I1 goes up insertion end, and length is slightly less than steel plate thickness greater than insertion end thickness.
Described spacer pin 4 matees with aperture II 25 with the aperture I 15 on the coupling steel plate II with coupling steel plate I, and length is slightly less than steel plate thickness.
Like accompanying drawing 5, the described spacing piece 6 that removes which is provided with and mate the groove 61 that steel plate I insertion end is complementary, and being provided with one in the groove increases elastic groove 63, one ends and be provided with the convexity of being convenient to remove 62.
Like accompanying drawing 6, be the lock screw 7 of system matches, lock screw 7 heads are provided with the external screw thread that is tapering 71 with snap ring 3 female threads 33 couplings, and apical head is provided with inner hexagonal hole or plum blossom hole 72, and the nail body is provided with external screw thread 73, nail body tip is provided with self tapping groove 74.
Single-unit section steel plate specific embodiment more than is provided, and accompanying drawing 7 provides this utility model different size form sketch map.Fig. 7 A is a single-unit section steel plate, and Fig. 7 B is a binodal section steel plate, and Fig. 7 C is three sections steel plates.
Like accompanying drawing 7B; Binodal section steel plate is made up of coupling steel plate I1, coupling steel plate II I8, snap ring 3, spacer pin 4, connecting pin 5 and the spacing piece 6 that removes; Its two ends of coupling steel plate II I8 are provided with insertion groove; The two ends insertion groove cooperates the insertion end of coupling steel plate I1, and connects through connecting pin 5, is applicable to the operation of binodal section.According to the difference of patient vertebral body, coupling steel plate II I length can be established a plurality of specifications.
Like accompanying drawing 7C, three sections steel plates are made up of coupling steel plate I1, coupling steel plate IV9, snap ring 3, spacer pin 4, connecting pin 5 and the spacing piece 6 that removes, and coupling steel plate IV two ends are provided with insertion groove, and steel plate is provided with symmetric many group combination bore; Can establish visual windows 91 on it.Coupling steel plate IV9 two ends insertion groove cooperates the insertion end of coupling steel plate I1, and connects through connecting pin 5, is applicable to the operation of three sections.According to the difference of patient vertebral body, coupling steel plate IV can establish a plurality of specifications.
This utility model is because snap ring spherical surface and coupling steel plate spherical groove matching Design, and snap ring can be at the steel plate internal rotation, thereby makes screw implant the rear to changing within the specific limits, has universal function; Snap ring inwall female thread 33 cooperates with lock screw head external screw thread 71 simultaneously, and after lock screw was implanted, because the cause of core diameter of thread tapering, snap ring was strutted, thereby fixes with steel plate, has realized lock function; Coupling steel plate I 1 and 2 of coupling steel plate II are passed through connecting pin and are cooperated, and have realized dynamic function.So far this utility model realized dynamically, the universal lock function.
The above only is the preferred implementation of this utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from this utility model design; Can also make some improvement and retouching, these improvement and retouching also should be regarded as in the protection domain of this utility model.
Claims (10)
1. an anterior cervical vertebrae dynamic universal locking steel plate is characterized in that, it comprises coupling steel plate, snap ring, spacer pin, connecting pin and the spacing piece that removes that allows relative motion; Link to each other through connecting pin between the coupling steel plate of motion each other; Snap ring is installed in the macropore of coupling steel plate; Spacer pin is installed in the aperture of coupling steel plate; The spacing piece that removes is stuck between the coupling steel plate.
2. a kind of anterior cervical vertebrae dynamic universal locking steel plate as claimed in claim 1 is characterized in that, described coupling steel plate has two coupling steel plate I and coupling steel plate II at least; For the operation of multi-segmental, need to increase coupling steel plate II I or coupling steel plate IV.
3. a kind of anterior cervical vertebrae dynamic universal locking steel plate as claimed in claim 2 is characterized in that, described coupling steel plate I, and the one of which end is provided with insertion end, and insertion end is provided with connecting hole; The blunt I of coupling steel plate I other end edge circle is provided with two symmetric combination bore, and combination bore is made up of a macropore I and an aperture I, has overlappingly between macropore I and aperture I, is provided with spherical groove in the macropore I, and with the snap ring coupling, aperture I and spacer pin mate; Steel coupling steel plate I upper surface I and lower surface I all are arcuation.
4. a kind of anterior cervical vertebrae dynamic universal locking steel plate as claimed in claim 2 is characterized in that, described coupling steel plate II, and the one of which end is provided with insertion groove, and groove is provided with a circular runway hole, matees with connecting pin; The blunt II of coupling steel plate II other end edge circle which is provided with two symmetric combination bore, and combination bore is made up of a macropore II and an aperture II, has overlappingly between macropore II and aperture II, is provided with spherical groove in the macropore II, and with the snap ring coupling, aperture II and spacer pin mate; Coupling steel plate II upper surface II and lower surface II all are arcuation.
5. a kind of anterior cervical vertebrae dynamic universal locking steel plate as claimed in claim 2 is characterized in that, described coupling steel plate II I or coupling steel plate IV, and its two ends are provided with insertion groove, are respectively equipped with a circular runway hole on the groove, mate with connecting pin; Coupling steel plate II I or coupling steel plate IV are provided with symmetric one or more groups combination bore, and combination bore is made up of a macropore and an aperture, have overlappingly between macropore and aperture, are provided with spherical groove in the macropore, are used for and snap ring matees, and aperture is used for mating with spacer pin; Steel plate upper surface and lower surface all are arcuation, mate with vertebral body.
6. a kind of anterior cervical vertebrae dynamic universal locking steel plate as claimed in claim 1 is characterized in that described snap ring is provided with a breach, is the C type; Outer surface is spherical in shape, with the spherical groove coupling in the coupling steel plate macropore; Inwall is provided with multiple thread, and the end directly is tapering, and horn mouth up.
7. a kind of anterior cervical vertebrae dynamic universal locking steel plate as claimed in claim 1 is characterized in that, described connecting pin, and diameter matees with the hole that coupling steel plate I goes up insertion end.
8. a kind of anterior cervical vertebrae dynamic universal locking steel plate as claimed in claim 1; It is characterized in that the described spacing piece that removes which is provided with and matees the groove that steel plate I insertion end is complementary; Being provided with one in the groove increases elastic groove, and an end is provided with the convexity of being convenient to remove.
9. a kind of anterior cervical vertebrae dynamic universal locking steel plate as claimed in claim 1 is characterized in that, it should cooperate lock screw to use.
10. a kind of anterior cervical vertebrae dynamic universal locking steel plate as claimed in claim 9; It is characterized in that; Described lock screw, lock screw head are provided with the external screw thread that is tapering with snap ring female thread coupling, and apical head is provided with inner hexagonal hole; The nail body is provided with that external screw thread, nail body tip are provided with the self tapping groove or from drill flute, thereby lock screw is established common lock screw, self tapping lock screw and bored three kinds of models of lock screw certainly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220195891 CN202619827U (en) | 2012-05-03 | 2012-05-03 | Anterior cervical dynamic universal locking steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220195891 CN202619827U (en) | 2012-05-03 | 2012-05-03 | Anterior cervical dynamic universal locking steel plate |
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| CN202619827U true CN202619827U (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220195891 Expired - Fee Related CN202619827U (en) | 2012-05-03 | 2012-05-03 | Anterior cervical dynamic universal locking steel plate |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104546097A (en) * | 2013-10-09 | 2015-04-29 | 上海市同济医院 | Dynamic cervical vertebra fixing steel plate |
| CN104814816A (en) * | 2015-05-20 | 2015-08-05 | 上海长征医院 | Self-stabilization type extreme lateral approach intervertebral fusion cage |
| 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 |
| WO2016058243A1 (en) * | 2014-10-16 | 2016-04-21 | 常州市康辉医疗器械有限公司 | Steel plate screw system with universal locking function |
| CN106955147A (en) * | 2016-01-11 | 2017-07-18 | 董震 | A kind of orthopaedics lock screw |
| CN108294816A (en) * | 2018-02-05 | 2018-07-20 | 四川大学华西医院 | A kind of zero back gauge steel plate of anterior cervical vertebrae undercut mark |
| CN110856674A (en) * | 2018-08-23 | 2020-03-03 | 台湾微创医疗器材股份有限公司 | Spinal implant and method of making same |
| CN111529035A (en) * | 2020-05-28 | 2020-08-14 | 四川大学华西医院 | Anterior cervical adjacent vertebra degeneration prevention buffer device |
-
2012
- 2012-05-03 CN CN 201220195891 patent/CN202619827U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104546097A (en) * | 2013-10-09 | 2015-04-29 | 上海市同济医院 | Dynamic cervical vertebra fixing steel plate |
| CN104546097B (en) * | 2013-10-09 | 2017-01-25 | 上海市同济医院 | Dynamic cervical vertebra fixing steel plate |
| WO2016058243A1 (en) * | 2014-10-16 | 2016-04-21 | 常州市康辉医疗器械有限公司 | Steel plate screw system with universal locking function |
| CN104814816A (en) * | 2015-05-20 | 2015-08-05 | 上海长征医院 | Self-stabilization type extreme lateral approach intervertebral fusion cage |
| 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 |
| CN106955147A (en) * | 2016-01-11 | 2017-07-18 | 董震 | A kind of orthopaedics lock screw |
| CN108294816A (en) * | 2018-02-05 | 2018-07-20 | 四川大学华西医院 | A kind of zero back gauge steel plate of anterior cervical vertebrae undercut mark |
| CN110856674A (en) * | 2018-08-23 | 2020-03-03 | 台湾微创医疗器材股份有限公司 | Spinal implant and method of making same |
| CN111529035A (en) * | 2020-05-28 | 2020-08-14 | 四川大学华西医院 | Anterior cervical adjacent vertebra degeneration prevention buffer device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20190503 |
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| CF01 | Termination of patent right due to non-payment of annual fee |