CN204909615U - Road bridge meets steel sheet fixing system before cervical vertebra - Google Patents
Road bridge meets steel sheet fixing system before cervical vertebra Download PDFInfo
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- CN204909615U CN204909615U CN201520685331.3U CN201520685331U CN204909615U CN 204909615 U CN204909615 U CN 204909615U CN 201520685331 U CN201520685331 U CN 201520685331U CN 204909615 U CN204909615 U CN 204909615U
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Abstract
The utility model discloses a road bridge meets steel sheet fixing system before cervical vertebra, its both sides portion grillage that sets up including the symmetry, be connected with the bridging grillage that is the arc and sets up between the both sides portion steelframe, the lateral part grillage becomes the strip and slopes to set up to another lateral part from a lateral part, the internal surface of bridging grillage is inwards advanced by leaps and bounds and the medial surface of surface and both sides portion grillage forms the breach, it wears to adorn the hole to be equipped with two screws on the both sides portion grillage respectively, the screw is worn to adorn and is worn to be equipped with to connect bone screw in the hole, it is the sphere that the inner wall segment table face that the hole is close to lateral part grillage internal surface is worn to adorn by the screw, connect bone screw to have the screw head and from the tapping linkage segment, the back tip of screw head has and is the inner wall section matched with button head sphere that the sphere was described, it penetrates the hole to be equipped with the guide on the bridging grillage. The utility model discloses can improve the lumbar vertebrae and connect putting into the accuracy and having increased the power of controlling of screw of bone screw, have the stability that increases the cervical vertebra, improve bone grafting integration rate and alleviate the advantage of postoperative dysphagia.
Description
Technical field
This utility model relates to a kind of anterior cervical vertebrae bridge plate fixed system.
Background technology
It is one of standard procedures mode for the treatment of the illness such as cervical spine degeneration, wound at present that anterior cervical decompression merges internal fixation operation, anterior plate internal fixtion is combined on the basis that decompression is merged, the stability of cervical vertebra can be increased, improve fusion rate of bone graft, become the selection of most of anterior cervical operation at present.
The block plate that anterior plate is roughly rectangle by global formation forms, the both sides of steel plate arrange row's drift bolt hole respectively, follow closely Interal fixation on front side of cervical vertebra by inserting titanium alloy, the middle part of steel plate arranges horizontal strip hole, by inserting titanium alloy nail, fusion device is stretched into cervical vertebra inside, but, the application of above-mentioned anterior plate is also with the problem of serving, steel plate understands its height higher than cervical vertebra after inserting, namely the steel plate after inserting and cervical vertebra form ladder, the contact of the unavoidable and cervical vertebra soft tissue of the steel plate after implantation, the mechanical stimulus to esophagus can be formed, cause as postoperative dysphagia, internal fixtion loose shift even ruptures, the complication such as damage esophagus, dysphagia is one of complication common after traditional anterior cervical vertebrae titanium plate internal fixation operation, after bibliographical information uses front road titanium plate internal fixation, the incidence rate of chronic dysphagia can reach 10%-21%, the reports such as Riley, when anterior plate fixation Ineffective internal fixation 1-12 month, patient's dysphagia incidence rate is respectively 53.2% and 16.8%.
Summary of the invention
This utility model for the problems referred to above provide a kind of increase cervical vertebra stability, improve fusion rate of bone graft and alleviate the anterior cervical vertebrae bridge plate fixed system of postoperative dysphagia.
In order to solve the problems of the technologies described above, this utility model provides a kind of anterior cervical vertebrae bridge plate fixed system of following structure, it comprises symmetrically arranged both sides grillage, the bridge joint grillage of curved setting is connected with between the steelframe of both sides, side panel is put up strip and is obliquely installed to the other side from a sidepiece, the inner surface of bridge joint grillage is inwardly advanced by leaps and bounds and the medial surface of outer surface and both sides grillage forms breach, both sides grillage is respectively equipped with vertically spaced two screw mounting holes, bone screw is coated with in screw mounting hole, screw mounting hole is sphere near the inner wall section surface of sidepiece grillage inner surface, bone screw has screw head and thread tapping linkage section, the rearward end of described screw head has the round end sphere matched with the inner wall section of described spherically shape, bridge joint grillage is provided with guiding and penetrates hole.
Sidepiece grillage and the one-body molded and connecting portion of bridge joint grillage and sidepiece grillage of bridge joint grillage are in the middle part of sidepiece grillage.
The both ends up and down of sidepiece grillage are round pie, and described screw mounting hole is arranged on cake center, and the screw mounting hole on two sidepiece grillages staggers setting.
Bridge joint grillage is provided with graduation mark.
Sidepiece grillage be provided with lay respectively at screw mounting hole sidepiece be pressed against screwed hole, be pressed against in screwed hole be bolted with the screw head front-end surface that can be pressed against described bone screw be pressed against screw, be pressed against screw and comprise the thread segment being screwed onto and being pressed against in screwed hole, what the front end of thread segment outwardly formed the screw head front-end surface that can compress described bone screw is pressed against convex edge, is pressed against convex edge and is provided with at least one can penetrate screw mounting hole lateral notch for bone screw.
After adopting said structure, the in-position of open circuit guide bur can accurately be fixed by this utility model, what improve bone screw inserts precision, improve the operability of operation, after inserting bone screw by this utility model location, the hold of bone screw strengthens, and adjacent bone screw spacing increases, increase the space of adjacent interspinous operation technique, the contact with cervical vertebra soft tissue can be avoided completely after the formation of above-mentioned breach makes it insert, reduce the mechanical stimulus to esophagus, contribute to the incidence rate reducing postoperative dysphagia.
The anterior cervical vertebrae bridge plate fixed system of this invention design, the fixed position of steel plate is in the both sides of cervical vertebral body, thus the stimulation avoided esophagus, bridge joint grillage is lower than sidepiece grillage simultaneously, during placement, bridging board mounts in intervertebral space, the outer surface of bridge joint grillage, lower than anterior margin of vertebral body, can not cause any stimulation to esophagus.
In sum, this utility model can improve inserting degree of accuracy and increasing the hold of screw of lumbar vertebra bone screw, and increase adjacent interspinous operation technique space, have increase cervical vertebra stability, improve fusion rate of bone graft and alleviate the advantage of postoperative dysphagia.
Accompanying drawing explanation
Fig. 1 is that in prior art, anterior cervical vertebrae bridge plate is connected to epicentral structural representation;
Fig. 2 is the structural representation of a kind of embodiment of the present utility model;
Fig. 3 is the rearview removing bone screw in Fig. 2;
Fig. 4 is the structural representation analysed and observe along A-A line in Fig. 2;
Fig. 5 is the structural representation analysed and observe along B-B line in Fig. 4;
Fig. 6 is the schematic diagram of this utility model under surgical state;
Fig. 7 is the structural representation that Fig. 6 overlooks state;
Fig. 8 is the structural representation of the another kind of embodiment of this utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further detail:
As shown in Figure 1, in prior art, when doing anterior cervical vertebrae internal fixation operation, by blade plate 30, upper and lower two joint vertebras are connected, blade plate 30 be connected with through blade plate and penetrate into the attachment screw 40 in vertebral body, containing cortical bone and spongy bone in vertebral body, that is attachment screw 40 can only penetrate into the cortical bone near front side, the termination that penetrates of attachment screw 40 can not infinitely near canalis spinalis 50, namely can not near the upper cortical bone near canalis spinalis 50 of vertebral body, when patient's osteoporosis, now coming off easily appears in above-mentioned four attachment screws 40, occur moving back and follow closely even blade plate 30 and to dehisce phenomenon, owing to having esophagus on front side of vertebral body, above-mentioned blade plate 30 natively exceeds vertebral body, if there is the probability of dysphagia after loosening and increasing operation in patients in appearance, and substantially prolongs the rehabilitation time limit of patient.When clinical operation, the width of blade plate is generally between 1-2cm, and as shown in fig. 1, thus two attachment screws can have much the same drift bolt angle, have a strong impact on the bonding strength of blade plate and vertebral body, affect the rehabilitation of patient and painful after adding operation in patients.
As shown in Figures 2 to 5, anterior cervical vertebrae bridge plate fixed system provided by the utility model comprises symmetrically arranged both sides grillage 1, the bridge joint grillage 2 of curved setting is connected with between the steelframe of both sides, sidepiece grillage 1 into strips and be obliquely installed to the other side from a sidepiece, in the present embodiment, the connecting portion of sidepiece grillage 1 one-body molded and bridge joint grillage 2 and sidepiece grillage 1 with bridge joint grillage 2 is in the middle part of sidepiece grillage 1, the inner surface of bridge joint grillage 2 is inwardly advanced by leaps and bounds and the medial surface of outer surface and both sides grillage 1 forms breach 10, this breach 10 as shown in Figure 4, thus make overall bridge plate not higher than the middle part of vertebral body, it is avoided to have influence on the human organs such as the esophagus on front side of vertebral body, both sides grillage 1 is respectively equipped with vertically spaced two screw mounting holes 3, bone screw 4 is coated with in screw mounting hole 3, the both ends up and down of sidepiece grillage 1 are round pie, middle in strip, screw mounting hole 3 is arranged on cake center, this set can reduce the width of sidepiece grillage 1 to greatest extent, avoid its end side surface higher than vertebral body outer surface, screw mounting hole 3 on two sidepiece grillages 1 staggers setting, in the present embodiment, the length of the sidepiece grillage 1 of side is greater than the sidepiece grillage of opposite side, namely there is dislocation in two round pie ends of two sidepiece grillages 1, two screw mounting holes 3 on such two sidepiece grillage 1 tops there will be difference in height, the bone screw 4 be installed in screw mounting hole 3 is avoided to occur interference, screw mounting hole 3 is sphere near the inner wall section surface of sidepiece grillage 1 inner surface, bone screw 4 has screw head 41 and thread tapping linkage section 42, the rearward end of described screw head 41 has the round end sphere 411 matched with the inner wall section of described spherically shape, by above-mentioned mating spherical surfaces can adjust flexibly to make bone screw 4 into nail direction stretch to appropriate location, and the sidepiece grillage 1 be obliquely installed can abut on the side of vertebral body, above-mentioned bone screw 4 is squeezed into from the sidepiece of vertebral body, the bone screw that this inclination is stretched into can ensure to use longer bone screw, that is, the length of the bone screw stretched into can be made longer, ensure that the bonding strength between this fixed system and vertebral body, ensure to there will not be the loosening phenomenon of moving back nail phenomenon and bone screw.
As shown in Figures 2 to 5, bridge joint grillage 2 is provided with guiding and penetrates hole 5, bridge joint grillage 2 is provided with graduation mark, guide and penetrate hole 5 for accurately fixing the in-position of open circuit guide bur, by above-mentioned graduation mark to arrange the in-position that can make open circuit guide bur more accurate, can effectively avoid occurring grillage shifting phenomena when fastening bone screw 4 simultaneously.
As shown in Figure 2 and Figure 5, sidepiece grillage 1 be provided with lay respectively at screw mounting hole 3 sidepiece be pressed against screwed hole 6, be pressed against in screwed hole 6 be bolted with screw head 41 front-end surface that can be pressed against described bone screw 4 be pressed against screw 7, be pressed against screw 7 and comprise the thread segment 71 being screwed onto and being pressed against in screwed hole 6, what the front end of thread segment 71 outwardly formed screw head 41 front-end surface that can compress described bone screw 4 is pressed against convex edge 72, be pressed against convex edge 72 and be provided with at least one can penetrate screw mounting hole 3 lateral notch 721 for bone screw 4, this lateral notch 721 as shown in Figure 2 and Figure 5, dotted line frame inside point in Fig. 5 represents this lateral notch, that is this is pressed against convex edge 72 cutting mode can be adopted to make it form incomplete convex edge, cutting the part removed is above-mentioned lateral notch.The above-mentioned screwed hole 6 that is pressed against is for stepped hole, hole near outside in stepped hole can be sunk to for the convex edge 72 of being pressed against of being pressed against screw 7, near inner side in stepped hole is screwed hole, can connect for thread segment 71, when needs install bone screw 4 by screw mounting hole 3, above-mentioned lateral notch 721 correspond to screw mounting hole 3, after bone screw 4 hammers into vertebral body, namely after the built-in length of bone screw 4 and angular definitions, screw and be pressed against screw 7 and make to be pressed against the screw head that convex edge 72 is pressed against bone screw 4, thus the degree that is connected firmly of anti-retaining nail phenomenon and reinforcement fixing head.Operate and avoid being pressed against screw 7 inserting end for convenience to continue to stretch into and lean vertebral body, the above-mentioned screw 7 that is pressed against can adopt the structure be rotatably connected on sidepiece grillage 1, specifically, sidepiece grillage arranges stepped hole, the two ends of stepped hole are the bigger hole of diameter, centre is the smaller hole of diameter, be pressed against screw 7 and there is the outer convex edge being arranged in outside macropore, be arranged in the internal ring edge of inner side macropore and be rotatably assorted at the cylinder of medial small hole, outer convex edge has at least one place breach, effect is pressed against by what rotate that this is pressed against that screw realizes that outer convex edge docks bone screw, this structure does not illustrate in an embodiment.
As shown in Figure 6 and Figure 7, using state of the present utility model, by open circuit guide bur, its in-position is accurately fixed, two sidepiece grillages abut on the side of vertebral body, middle bridge joint grillage stretches in intervertebral space, the breach formed and the position of sidepiece grillage are neither higher than the lateral surface of vertebral body, what ensure bone screw accurately by above-mentioned mating spherical surfaces stretches into angle, bone screw stretch into direction and position as shown in the x-ray in Fig. 7, what improve bone screw inserts precision, improve the operability of operation, after inserting bone screw by this utility model location, the hold of bone screw strengthens, and adjacent bone screw spacing increases, increase the space of adjacent interspinous operation technique, the contact with cervical vertebra soft tissue can be avoided completely after the formation of above-mentioned breach makes it insert, reduce the mechanical stimulus to esophagus, contribute to the incidence rate reducing postoperative dysphagia.
As shown in Figure 8 of the present utility model embodiment in another, its construction features and above-described embodiment are substantially identical, difference is, screw mounting hole 3 on two sidepiece grillages 1 staggers set-up mode difference, in the present embodiment, the length of the sidepiece grillage 1 of both sides is identical, two sidepiece grillages about 1 certain position that staggers makes two round pie ends occur dislocation, two screw mounting holes 3 on such two sidepiece grillage 1 tops there will be difference in height, avoid the bone screw 4 be installed in screw mounting hole 3 to occur interference.
The above is specific constructive form of the present utility model; this utility model is not restricted to the described embodiments; the art personnel, replace all in protection domain of the present utility model based on the equivalent variations of concrete structure on this utility model and parts.
Claims (5)
1. an anterior cervical vertebrae bridge plate fixed system, it is characterized in that comprising symmetrically arranged both sides grillage (1), the bridge joint grillage (2) of curved setting is connected with between the steelframe of both sides, sidepiece grillage (1) into strips and be obliquely installed to the other side from a sidepiece, the inner surface of bridge joint grillage (2) is inwardly advanced by leaps and bounds and the medial surface of outer surface and both sides grillage (1) forms breach, both sides grillage (1) is respectively equipped with vertically spaced two screw mounting holes (3), bone screw (4) is coated with in screw mounting hole, screw mounting hole (3) is sphere near the inner wall section surface of sidepiece grillage (1) inner surface, bone screw (4) has screw head (41) and thread tapping linkage section (42), the rearward end of described screw head (41) has the round end sphere (411) matched with the inner wall section of described spherically shape, bridge joint grillage (2) is provided with guiding and penetrates hole (5).
2. anterior cervical vertebrae bridge plate fixed system as claimed in claim 1, is characterized in that: the connecting portion of described sidepiece grillage (1) one-body molded and bridge joint grillage (2) and sidepiece grillage (1) with bridge joint grillage (2) is in the middle part of sidepiece grillage (1).
3. anterior cervical vertebrae bridge plate fixed system as claimed in claim 1 or 2, it is characterized in that: the both ends up and down of described sidepiece grillage (1) are round pie, described screw mounting hole (3) is arranged on cake center, and the screw mounting hole (3) on two sidepiece grillages (1) staggers setting.
4. anterior cervical vertebrae bridge plate fixed system as claimed in claim 1 or 2, is characterized in that: described bridge joint grillage (2) is provided with graduation mark.
5. anterior cervical vertebrae bridge plate fixed system as claimed in claim 1, it is characterized in that: sidepiece grillage (1) be provided with lay respectively at screw mounting hole (3) sidepiece be pressed against screwed hole (6), be pressed against in screwed hole (6) be bolted with screw head (41) front-end surface that can be pressed against described bone screw (4) be pressed against screw (7), be pressed against screw (7) and comprise the thread segment (71) being screwed onto and being pressed against in screwed hole (6), what the front end of thread segment (71) outwardly formed screw head (41) front-end surface that can compress described bone screw (4) is pressed against convex edge (72), be pressed against convex edge (72) to be provided with at least one bone screw (4) can be supplied to penetrate the lateral notch (721) of screw mounting hole (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520685331.3U CN204909615U (en) | 2015-09-07 | 2015-09-07 | Road bridge meets steel sheet fixing system before cervical vertebra |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520685331.3U CN204909615U (en) | 2015-09-07 | 2015-09-07 | Road bridge meets steel sheet fixing system before cervical vertebra |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204909615U true CN204909615U (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520685331.3U Expired - Fee Related CN204909615U (en) | 2015-09-07 | 2015-09-07 | Road bridge meets steel sheet fixing system before cervical vertebra |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204909615U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105147381A (en) * | 2015-09-07 | 2015-12-16 | 庄青山 | Anterior cervical bridging plate fixing system |
-
2015
- 2015-09-07 CN CN201520685331.3U patent/CN204909615U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105147381A (en) * | 2015-09-07 | 2015-12-16 | 庄青山 | Anterior cervical bridging plate fixing system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20170907 |