CN205307157U - Transversely can strut intervertebral fusion device - Google Patents
Transversely can strut intervertebral fusion device Download PDFInfo
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- CN205307157U CN205307157U CN201520887133.5U CN201520887133U CN205307157U CN 205307157 U CN205307157 U CN 205307157U CN 201520887133 U CN201520887133 U CN 201520887133U CN 205307157 U CN205307157 U CN 205307157U
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Abstract
The utility model belongs to the technical field of orthopedic medical equipment implant, especially, relate to a transversely can strut intervertebral fusion device, including hollow main part, its characterized in that for the cuboid structure before the main part struts, all shapes are the hexagon structure in after the main part struts, the main part is greater than the arc structure of both ends thickness for middle thickness. The beneficial effects of the utility model are that: when guaranteeing to have enough holding surfaces and outrigger performance, furthest increases bone grafting area and bone grafting volume, improvement bone grafting integration rate, thoroughly solve subside after the interbody fusion cage implantation, problem that the intervertebral height is lost.
Description
Technical field
This utility model belongs to orthopedic medical device inner matter technical field, particularly relates to one and laterally can strut inter vertebral fusing device.
Background technology
BAK and nail-stick system are combined in the disease aspects such as the low back pain that treatment lumbar degenerative slips, lumbar instability caused by Segmental defect and discogenic disease causes and have good efficacy. BAK is possible not only to recover the height of intervertebral, expands intervertebral foramina, also enhances the support of front pillar simultaneously, add the stability of Fusion levels, it is prevented that Cage subsidence and pseudoarticulation formation. The forties in 20th century, CLOWARD begins to application intervertebral fusion method treatment lumbago, and thereafter, first BAK-Cage is applied to human body. Through development for many years, various BAK are arisen at the historic moment. And wherein conventional be cylindrical screw fusion device and the big class of box-shaped fusion device two.
Along with the popularization of clinical practice and going deep into of theoretical research, find existing Invasive lumbar fusion device Shortcomings gradually. Such as Chinese utility model patent CN2361245Y discloses a kind of adjustable screw type intervertebral fusion device, this fusion device is made up of elastic titanium alloy boxes and baskets and middle m-polyethylene vertebral pulp, elastic titanium alloy boxes and baskets are cylindric hollow-core construction, have, in outer tubular wall, the screw thread that both sides are interrupted. But, the destruction of soleplate is easily caused relatively greatly by circumgyration incision effect when this cylindrical screw Invasive lumbar fusion device is implanted subsides and disc height decline, thus being easily caused intervertebral fusion failure and displacement. Compared with cylindrical screw fusion device, the supporter of box-shaped fusion device is cuboid framework, and volume is less, it is easy to implant. Such as Chinese published patent application CN103263309A, discloses a kind of fusion device, and main part is provided with the oblique groove gone up forward under rear, and oblique groove is used for coordinating the oblique screw of pedicle of vertebral arch with fixing fusion device. This box-shaped fusion device is smooth with the contact surface of soleplate, and interface bed knife is weak, it is impossible to provide enough self-stability energy. And this fusion device needs additional pedicle screw system to be fixed, open surgery wound is big, hemorrhage many, it is easy to Spinal Cord is neural, it is necessary to carrying out muscle widely and peel off and long tractive, gerontal patient is difficult to tolerate and add surgery cost. Therefore the method for Wicresoft is applied to clinic and has become as development trend at present.
In actual use, the Invasive lumbar fusion device of traditional type there is also many defects, for instance, postoperative there is sedimentation in various degree and the problem such as bone fusion rate is low, ultimately results in vertebras and highly loses.In recent years research shows, the problems referred to above are very big relevant with bone grafting area with the interface stability of Invasive lumbar fusion device. Accordingly, it would be desirable to one there is enough interface stability performances again can abundant bone grafting, it is possible to by the expanding lumbar intervertebral fusion device that Wicresoft's approach is implanted, so that intervertebral fusion operation Wicresoft.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide one laterally can strut inter vertebral fusing device, while ensureing to there is enough supporting surfaces and stablize support performance, increase bone grafting area and bone grafting amount to greatest extent, improve fusion rate of bone graft, the problem thoroughly solving to settle after Invasive lumbar fusion device is implanted, intervertebral height is lost.
To achieve these goals, this utility model adopts the following technical scheme that
One laterally can strut inter vertebral fusing device, including the main body of hollow, it is characterised in that described main body is rectangular structure before strutting, and described main body struts rear inner circumferential and is shaped as hexagonal structure, and described main body is the interior thickness arcuate structure more than two-end thickness.
Described main body includes head and afterbody and the right front wall between described head and afterbody, left front wall, right wall, left wall, right rear wall, left back wall, described head and described afterbody pass on left described left front wall, described left wall, described left back wall connect, described head and on the right side of described afterbody by described right front wall, described right wall, described right rear wall connection.
Described head, described left front wall, right described antetheca composition presoma, body in described left wall, described right wall composition, described afterbody, described left back wall, described right rear wall form opisthosoma, and described presoma, described middle body, described opisthosoma form described main body.
Between described right front wall with described right wall, between described right wall and described right rear wall, between described left front wall and described left wall, it is connected respectively through joint pin between described left wall and described left back wall, and described right front wall, described right wall, described right rear wall can rotate around described joint pin, described left front wall, described left wall, described left back wall can rotate around described joint pin.
The thickness of described head and described afterbody is less than the thickness of described right wall center.
The thickness of described head and described afterbody is less than the thickness of described left wall center.
The thickness of described head and described left front wall or described afterbody and described left back wall junction to described left wall center is incremented by continuously, and described head differs 3-4mm with described left front wall or described afterbody with the thickness of the thickness of described left back wall junction to described left wall center.
The upper and lower surface of described main body is respectively equipped with pawl structure.
Described right front wall, described left front wall, described right wall, described left wall, described right rear wall, described left back wall lateral surface are respectively equipped with the implant holes running through each respective side walls.
Described head is provided with locking bolt.
The beneficial effects of the utility model are: instead of, by hexagonal structure main body, the quadrilateral structure main body that prior art is conventional, in elongated cube before strutting, be beneficial to by rear outside less enter the implantation of operative approach passage, implant the hexagonal structure of rear distraction between cone, on the basis of four length of sides, two mesospores in left and right are added originally, therefore add the girth of whole device after strutting, be also increased by the bone grafting amount within device; In main body, the design of arcuate structure makes it more meet the anatomical features of human body cone intercalated disc soleplate, adds the stability after whole device is implanted; The pawl structure that main body upper and lower surface is arranged, for increasing fitness and the steadiness of device and soleplate; Implant holes injects bone-grafting material after strutting for main body, is beneficial to the bone-grafting material flowing to device space outerpace, increases the area of later stage bone-graft fusion, thus increasing the stability of later stage skeletonization; Head design lock bolt, device is hexagonal strut after, the whole device for spreading of lockable, the stability of Injection Space and later stage device to ensure later stage bone-grafting material. Device of the present utility model is while ensureing to have enough supporting surfaces and stablize support performance, add bone grafting area and bone grafting amount to greatest extent, improve fusion rate of bone graft, the problem thoroughly solving sedimentation after Invasive lumbar fusion device in prior art is implanted, intervertebral height loss.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is expansion schematic diagram of the present utility model.
In figure, 1, main body, 2, head, 3, afterbody, 4, right front wall, 5, left front wall, 6, right rear wall, 7, left back wall, 8, joint pin, 9, pawl structure, 10, implant holes, 11, locking bolt, 12, right wall, 13, left wall.
Detailed description of the invention
Below in conjunction with accompanying drawing, a kind of detailed description of the invention of the present utility model is explained.
This utility model provides a kind of laterally can strut inter vertebral fusing device, this device includes the main body of hollow, described main body is rectangular structure before strutting, and described main body struts rear inner circumferential and is shaped as hexagonal structure, and described main body is the interior thickness arcuate structure more than two-end thickness. This structure not only increases bone grafting area, and be beneficial to by rear outside less enter the implantation of operative approach passage.
Specifically, as shown in Figure 1 and Figure 2, described main body includes head and afterbody and the right front wall between described head and afterbody, left front wall, right wall, left wall, right rear wall, left back wall, described head and described afterbody pass on left described left front wall, described left wall, described left back wall connect, described head and on the right side of described afterbody by described right front wall, described right wall, described right rear wall connection; Described head, described right front wall, described left front wall form vertebral body, and described afterbody, described right rear wall, left back wall form hypocentrum, and described upper vertebral body, described hypocentrum form described main body.
Between described right front wall with described right wall, between described right wall and described right rear wall, between described left front wall and described left wall, it is connected respectively through joint pin between described left wall and described left back wall, and described right front wall, described right wall, described right rear wall can rotate around described joint pin, described left front wall, described left wall, described left back wall can rotate around described joint pin. It is easy to strutting and closing of device.
The thickness of described head and described afterbody is less than the thickness of described right front wall Yu described right rear wall junction, the thickness of described head and described afterbody is less than the thickness of described left front wall Yu described left back wall junction, described head and described afterbody are incremented by continuously to the thickness of described left front wall (right front wall) Yu described left back wall (right rear wall) junction, and preferably, the thickness of described head and described left front wall (right front wall) or described afterbody and described left back wall (right rear wall) junction to described left wall center is incremented by continuously, and the thickness of described head and described left front wall (right front wall) or described afterbody and described left back wall (right rear wall) junction differs 3-4mm to the thickness of described left wall (right wall) center, indication thickness is the distance that main body is provided with between the upper and lower surface of pawl structure. this design more meets the anatomical features of human body cone intercalated disc soleplate, adds the stability after whole device is implanted,
The upper and lower surface of described main body is respectively equipped with pawl structure, to increase fitness and the steadiness of device and soleplate.
Described right front wall, left front wall, right wall, left wall, right rear wall, left back wall lateral surface are respectively equipped with the implant holes running through each respective side walls, implant holes is perpendicular to the side of each sidewall, bone-grafting material is injected for main body after strutting, it is beneficial to the bone-grafting material flowing to device space outerpace, increase the area of later stage bone-graft fusion, thus increasing the stability of later stage skeletonization.
Described head is provided with locking bolt, device is hexagonal strut after, the whole device for spreading of lockable, the stability of Injection Space and later stage device to ensure later stage bone-grafting material.
Device of the present utility model adopts Absorbale magnesium alloy material, has both ensured the instant stability after implanting intervertebral disc, can be absorbed by the body along with self ossified reinforcement of bone-graft fusion again.While ensureing to there is enough supporting surfaces and stablize support performance, add bone grafting area and bone grafting amount to greatest extent, improve fusion rate of bone graft, thoroughly solve the problem that in prior art, sedimentation after Invasive lumbar fusion device implantation, intervertebral height are lost.
During use, Invasive lumbar fusion device of the present utility model is placed on soleplate, and well suit with soleplate, during placement, the pawl structure of main body upper and lower surface contacts with soleplate, and soleplate is between upper vertebral body and hypocentrum, then pass through operation path and implant bone grafting from afterbody, bone grafting is after the implantation by left and right antetheca, left and right sidewall, the implant holes of left and right each sidewall of mesospore flows into the intervertebral space of human body, bone grafting is made to be laid on the soleplate of vertebral body, postoperative three months, these bone graftings will device together with upper and lower vertebral fusion, thus the problem solving human body lumbar vertebrae instability, reach operation purpose.
Above an example of the present utility model is described in detail, but described content has been only preferred embodiment of the present utility model, it is impossible to be considered for limiting practical range of the present utility model. All equalizations made according to this utility model application range change and improvement etc., all should still belong within patent covering scope of the present utility model.
Claims (10)
1. transverse direction can strut an inter vertebral fusing device, including the main body of hollow, it is characterised in that described main body is rectangular structure before strutting, and described main body struts rear inner circumferential and is shaped as hexagonal structure, and described main body is the interior thickness arcuate structure more than two-end thickness.
2. inter vertebral fusing device according to claim 1, it is characterized in that described main body includes head and afterbody and the right front wall between described head and afterbody, left front wall, right wall, left wall, right rear wall, left back wall, described head and described afterbody pass on left described left front wall, described left wall, described left back wall connect, described head and on the right side of described afterbody by described right front wall, described right wall, described right rear wall connection.
3. inter vertebral fusing device according to claim 2, it is characterized in that described head, described left front wall, right described antetheca composition presoma, body in described left wall, described right wall composition, described afterbody, described left back wall, described right rear wall form opisthosoma, and described presoma, described middle body, described opisthosoma form described main body.
4. inter vertebral fusing device according to claim 3, it is characterized in that between described right front wall with described right wall, between described right wall and described right rear wall, between described left front wall and described left wall, be connected respectively through joint pin between described left wall and described left back wall, and described right front wall, described right wall, described right rear wall can rotate around described joint pin, described left front wall, described left wall, described left back wall can rotate around described joint pin.
5. the inter vertebral fusing device according to claim 1 or 4, it is characterised in that the thickness of described head and described afterbody is less than the thickness of described right wall center.
6. inter vertebral fusing device according to claim 5, it is characterised in that the thickness of described head and described afterbody is less than the thickness of described left wall center.
7. inter vertebral fusing device according to claim 6, it is characterized in that described head and described left front wall or described afterbody and described left back wall junction are incremented by continuously to the thickness of described left wall center, and described head differs 3-4mm with described left front wall or described afterbody with the thickness of the thickness of described left back wall junction to described left wall center.
8. inter vertebral fusing device according to claim 1, it is characterised in that the upper and lower surface of described main body is respectively equipped with pawl structure.
9. the inter vertebral fusing device according to Claims 2 or 3 or 4 or 6 or 7, it is characterised in that described right front wall, described left front wall, described right wall, described left wall, described right rear wall, described left back wall lateral surface are respectively equipped with the implant holes running through each respective side walls.
10. the inter vertebral fusing device according to Claims 2 or 3 or 4 or 6 or 7, it is characterised in that described head is provided with locking bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520887133.5U CN205307157U (en) | 2015-11-06 | 2015-11-06 | Transversely can strut intervertebral fusion device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520887133.5U CN205307157U (en) | 2015-11-06 | 2015-11-06 | Transversely can strut intervertebral fusion device |
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| CN205307157U true CN205307157U (en) | 2016-06-15 |
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| CN201520887133.5U Active CN205307157U (en) | 2015-11-06 | 2015-11-06 | Transversely can strut intervertebral fusion device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105232191A (en) * | 2015-11-06 | 2016-01-13 | 天津市天津医院 | Intervertebral fusion device capable of being braced in transverse direction |
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- 2015-11-06 CN CN201520887133.5U patent/CN205307157U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105232191A (en) * | 2015-11-06 | 2016-01-13 | 天津市天津医院 | Intervertebral fusion device capable of being braced in transverse direction |
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Effective date of registration: 20220811 Address after: 101200 No.50, West District, Mafang Industrial Zone, Pinggu District, Beijing Patentee after: BEIJING FULE SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: No. 406, Jiefang South Road, Hexi District, Tianjin, 300211 Patentee before: TIANJIN Hospital |