CN204798066U - Artificial pyramid - Google Patents
Artificial pyramid Download PDFInfo
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- CN204798066U CN204798066U CN201520365625.8U CN201520365625U CN204798066U CN 204798066 U CN204798066 U CN 204798066U CN 201520365625 U CN201520365625 U CN 201520365625U CN 204798066 U CN204798066 U CN 204798066U
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Abstract
The utility model provides an artificial pyramid, including last connector, down connector and supporting part, the supporting part is connected and is gone up connector and connector down, and the supporting part includes body and regulation portion, and regulation portion and body are connected adjustablely makes the fully adjustable of supporting part, the body with adjust the part and leave and to be connected with last connector and lower connector. The utility model discloses an artificial pyramid's last connector and lower connector are used for connecting two upper and lower adjacent centrums in the human skeleton respectively, and because the fully adjustable of supporting part, so as to makes artificial pyramid can adapt to different users, agree with more with original vertebra, and the distance that goes up between connector and the lower connector can be adjusted, thereby make artificial pyramid more accurately to be connected with human vertebra, it leads to connecting the inefficacy to avoid fixed position stress concentration to appear, improve artificial pyramid and human degree of agreeing with and reliability.
Description
Technical field
This utility model relates to artificial prosthesis technical field, in particular to a kind of artificial vertebral body.
Background technology
Vertebral tumor, serious splintered fracture and some infectious disease such as tuberculosis etc. often causes the destruction of vertebral body, and the angulation deformity of subsiding of may causing spinal cord, nervous lesion or occur that vertebra saves and spinal column.Delayed ischemic neurological deficits or the obvious person of angulation deformity often need row Vertebrae resection.
Appear as tumor of spine, spinal tuberculosis and the traumatic patient of artificial vertebral body provide a Therapeutic Method comparatively reliably.Current artificial vertebral body substitute is broadly divided into filled-type, such as bone cement, and support type, such as titanium net, and supports fixed pattern.Due to the difference of design, its biomechanical stability also has difference.Wherein, the fixed form scope of application of support type (titanium net) is done much the widest, and titanium net is positioned over cut vertebral body position, plays a supportive role, and steel plate screw fixing system is used for two vertebral bodys up and down adjacent for cut vertebral body to be fixedly connected with.Be separated from each other between titanium net in this fixed form and steel plate screw fixing system, titanium net only clamps by the vertebral body at its two, and thus fix loosely, easy run-off the straight, even comes off.In addition, due to for rigidly fixing, the physiological activity of the vertebral body be replaced is lost, and causes contiguous vertebral body sections stress to concentrate, easily causes the generation of the fixing failed phenomenons such as broken nail.By biomechanics experiment evaluation and clinical practice display, conventional manual vertebral body can cause plate in vertebral body to subside in axial compression and bending direction, and can make the limitation of activity of user.
Utility model content
Main purpose of the present utility model is to provide a kind of artificial vertebral body, is that rigidity makes the vertebral body connecting artificial vertebral body occur the problem that stress is concentrated to solve artificial vertebral body of the prior art.
To achieve these goals, this utility model provides a kind of artificial vertebral body, comprise connector, lower connector and support portion, support portion connects upper connector and lower connector, support portion comprises body and adjusting portion, adjusting portion is connected with body adjustable ground the adjustable in length making support portion, and body and adjusting portion are connected with upper connector and lower connector respectively.
Further, body comprises cavity, and adjusting portion is the pillar be connected in the cavity of body, forms piston structure between pillar and body.
Further, form pneumaticpiston structure between pillar and body, and between pillar and body, there is elasticity.
Further, upper connector is connected by articulation mechanism with between adjusting portion.
Further, upper connector is connected by spherical joint with between adjusting portion, and the upper surface of adjusting portion is convex, upper connector has the first connecting end surface of the arcs of recesses coordinated with the upper surface of adjusting portion.
Further, to be connected by articulation mechanism between connector with body down.
Further, to be connected by spherical joint between connector with body down, the lower surface of body is convex, lower connector has the second connecting end surface of the arcs of recesses coordinated with the lower surface of body.
Further, the upper surface of upper connector has multiple tapered projection, and/or the lower surface of lower connector has multiple tapered projection.
Further, the upper part of upper connector and/or the end portion of lower connector are the trabecular bone structure body in multidirectional micropore.
Further, upper connector also comprises the first flange connector, and the first flange connector is given prominence to from the edge of upper connector towards the direction away from lower connector; Lower connector also comprises the second flange connector, and the second flange connector is given prominence to from the edge of lower connector towards the direction away from upper connector.
Application the technical solution of the utility model, upper connector and the lower connector of artificial vertebral body of the present utility model are respectively used to be connected two the adjacent vertebral bodys up and down in human skeleton, and due to the adjustable in length of support portion, thus artificial vertebral body can be made to adapt to different user, more agree with original vertebra, and the distance between upper connector and lower connector can regulate, thus artificial vertebral body can be connected with human vertebrae more accurately, avoid fixed position occur stress concentrate cause Joint failure, improve compatible degree and the reliability of artificial vertebral body and human body, and the load that can reduce in human vertebrae, reduce the generation of the complication such as human vertebrae sections regression.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining this utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the schematic perspective view of the first direction of the embodiment according to artificial vertebral body of the present utility model;
Fig. 2 shows the schematic perspective view of the second direction of the embodiment according to artificial vertebral body of the present utility model;
Fig. 3 shows the side schematic view be installed to according to the embodiment of artificial vertebral body of the present utility model in human skeleton; And
Fig. 4 shows the forward schematic diagram be installed to according to the embodiment of artificial vertebral body of the present utility model in human skeleton.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe this utility model in detail in conjunction with the embodiments.
According to an aspect of the present utility model, provide a kind of artificial vertebral body, as shown in Figures 1 to 4, this artificial vertebral body comprises connector 20, lower connector 30 and support portion 10, support portion 10 connects upper connector 20 and lower connector 30, support portion 10 comprises body 11 and adjusting portion, and adjusting portion is connected with body 11 adjustable ground the adjustable in length making support portion 10, and body 11 and adjusting portion are connected with upper connector 20 and lower connector 30 respectively.
Upper connector 20 and the lower connector 30 of artificial vertebral body of the present utility model are respectively used to be connected two the adjacent vertebral bodys up and down in human skeleton, and due to the adjustable in length of support portion 10, thus artificial vertebral body can be made to adapt to different user, more agree with original vertebra, and the distance between upper connector 20 and lower connector 30 can regulate, thus artificial vertebral body can be connected with human vertebrae more accurately, avoid fixed position occur stress concentrate cause Joint failure, improve compatible degree and the reliability of artificial vertebral body and human body, and the load that can reduce in human vertebrae, reduce the generation of the complication such as human vertebrae sections regression.
Preferably, body 11 comprises cavity, and adjusting portion is the pillar 12 be connected in the cavity of body 11, forms piston structure between pillar 12 and body 11.More specifically, such as, in the present embodiment, what formed between pillar 12 and body 11 is pneumaticpiston structure, by regulating the air pressure in the cylinder in body 11 to carry out the distance that adjustable fixing 12 stretches out body 11, thus adapts to different anatomic physiological data.
Preferably, between pillar 12 and body 11, form pneumaticpiston structure, and between pillar 12 and body 11, there is elasticity.Such as pneumaticpiston structure also has certain elasticity, therefore between pillar 12 and body 11, also there is certain degree of freedom, elastic movement can be done vertically, make artificial prosthesis can dispersive stress in physical activity process, avoid connector 20 or produce excessive stress between lower connector 30 and human vertebrae.
Preferably, upper connector 20 is connected by articulation mechanism with between adjusting portion.More preferably, lower connector 30 is connected by articulation mechanism with between body 11.
As required, certain movement radially and/or the degree of freedom of pivotable can be had between upper connector 20 and pillar 12 and/or between lower connector 30 and body 11, several articulation mechanism is specifically set and articulation mechanism is arranged on the junction that connector 20 place still descends connector 30, can adjusts according to the vertebra that will replace or user's request.
Such as he, as illustrated in fig. 1 and 2, upper connector 20 is connected by spherical joint with between adjusting portion, and the upper surface of adjusting portion is convex, upper connector 20 has the first connecting end surface of the arcs of recesses coordinated with the upper surface of adjusting portion.More preferably, lower connector 30 is connected by spherical joint with between body 11, and the lower surface of body 11 is convex, lower connector 30 has the second connecting end surface of the arcs of recesses coordinated with the lower surface of body 11.
As shown in Figures 3 and 4, be connected by convex articular mechanism between upper connector 20 and column 12 and between lower connector 30 with body 11, good stability can be ensured, axial-rotation and mobility bending all around can be provided again, make the freedom of movement that can be formed between artificial vertebral body and corpus vertebrae between similar corpus vertebrae and corpus vertebrae, the living standard after making user replace vertebra is protected.
Preferably, as illustrated in fig. 1 and 2, the upper surface of upper connector 20 has multiple tapered projection, and/or the lower surface of lower connector 30 has multiple tapered projection.Tapered projection can increase connector is connected initial stage stability with human vertebrae, grows and reach long-term fixing effect after being connected completely with the connector of artificial vertebral body until human body bone.
Preferably, the upper part of upper connector 20 and/or the end portion of lower connector 30 are the trabecular bone structure body in multidirectional micropore.The trabecular bone structure body of multidirectional micropore has multidirectional micro hole structure, the diameter range in space is 500 microns to 1000 microns, this hole is conducive to osteocyte and creeps and grow into, and makes the faying face of the connector of artificial vertebral body will merge to reach steady in a long-term with physiological bone structure generation bone.
Preferably, as illustrated in fig. 1 and 2, upper connector 20 also comprises the first flange connector 21, first flange connector 21 and gives prominence to from the edge of upper connector 20 towards the direction away from lower connector 30; Lower connector 30 also comprises the second flange connector 31, second flange connector 31 to be given prominence to from the edge of lower connector 30 towards the direction away from upper connector 20.
As shown in Figures 3 and 4, first flange connector 21 and the second flange connector 31 are provided with fixing hole, for squeezing into nail in early days, artificial vertebral body and human vertebrae are fixed, until human body bone growth and after being connected completely with the connector of artificial vertebral body, nail can be removed again.
Artificial vertebral body of the present utility model adopts medical metal to make, medical metal is including, but not limited to titanium or titanium alloy, cobalt alloy, rustless steel and tantalum metal, magnesium alloy, this metalloid material all has regulation in ISO-5830 series international standard, and its biocompatibility has obtained both at home and abroad the practice confirmation that orthopaedics for many years implants application.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. an artificial vertebral body, it is characterized in that, comprise connector (20), lower connector (30) and support portion (10), described support portion (10) connects described upper connector (20) and described lower connector (30), described support portion (10) comprises body (11) and adjusting portion, described adjusting portion is connected with described body (11) adjustable ground the adjustable in length making described support portion (10), described body (11) and described adjusting portion are connected with described upper connector (20) and described lower connector (30) respectively.
2. artificial vertebral body according to claim 1, it is characterized in that, described body (11) comprises cavity, described adjusting portion, for being connected to the pillar (12) in the cavity of described body (11), forms piston structure between described pillar (12) and described body (11).
3. artificial vertebral body according to claim 2, it is characterized in that, form pneumaticpiston structure between described pillar (12) and described body (11), and between described pillar (12) and described body (11), there is elasticity.
4. artificial vertebral body according to claim 1, is characterized in that, described upper connector (20) is connected by articulation mechanism with between described adjusting portion.
5. artificial vertebral body according to claim 4, it is characterized in that, described upper connector (20) is connected by spherical joint with between described adjusting portion, the upper surface of described adjusting portion is convex, described upper connector (20) has the first connecting end surface of the arcs of recesses coordinated with the upper surface of described adjusting portion.
6. the artificial vertebral body according to claim 1 or 4, is characterized in that, described lower connector (30) is connected by articulation mechanism with between described body (11).
7. artificial vertebral body according to claim 6, it is characterized in that, described lower connector (30) is connected by spherical joint with between described body (11), the lower surface of described body (11) is convex, described lower connector (30) has the second connecting end surface of the arcs of recesses coordinated with the lower surface of described body (11).
8. artificial vertebral body according to claim 1, is characterized in that, the upper surface of described upper connector (20) has multiple tapered projection, and/or the lower surface of described lower connector (30) has multiple tapered projection.
9. artificial vertebral body according to claim 1, is characterized in that, the upper part of described upper connector (20) and/or the end portion of described lower connector (30) are the trabecular bone structure body in multidirectional micropore.
10. artificial vertebral body according to claim 1, is characterized in that,
Described upper connector (20) also comprises the first flange connector (21), and described first flange connector (21) is given prominence to from the edge of described upper connector (20) towards the direction away from described lower connector (30);
Described lower connector (30) also comprises the second flange connector (31), and described second flange connector (31) is given prominence to from the edge of described lower connector (30) towards the direction away from described upper connector (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365625.8U CN204798066U (en) | 2015-05-29 | 2015-05-29 | Artificial pyramid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365625.8U CN204798066U (en) | 2015-05-29 | 2015-05-29 | Artificial pyramid |
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| CN204798066U true CN204798066U (en) | 2015-11-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104840281A (en) * | 2015-05-29 | 2015-08-19 | 北京爱康宜诚医疗器材股份有限公司 | Artificial vertebra |
| CN105411727A (en) * | 2015-12-30 | 2016-03-23 | 四川大学华西医院 | Adjustable and interface type zero-incisura titanium mesh supporting, fusing and fixing system for anterior cervical spine |
| CN117137693A (en) * | 2023-10-30 | 2023-12-01 | 北京爱康宜诚医疗器材有限公司 | Spinal facet joint prosthesis |
| CN117204990A (en) * | 2023-11-09 | 2023-12-12 | 北京爱康宜诚医疗器材有限公司 | Atlantoaxial lateral mass joint fusion device |
-
2015
- 2015-05-29 CN CN201520365625.8U patent/CN204798066U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104840281A (en) * | 2015-05-29 | 2015-08-19 | 北京爱康宜诚医疗器材股份有限公司 | Artificial vertebra |
| CN105411727A (en) * | 2015-12-30 | 2016-03-23 | 四川大学华西医院 | Adjustable and interface type zero-incisura titanium mesh supporting, fusing and fixing system for anterior cervical spine |
| CN117137693A (en) * | 2023-10-30 | 2023-12-01 | 北京爱康宜诚医疗器材有限公司 | Spinal facet joint prosthesis |
| CN117137693B (en) * | 2023-10-30 | 2024-03-15 | 北京爱康宜诚医疗器材有限公司 | Spinal facet joint prosthesis |
| CN117204990A (en) * | 2023-11-09 | 2023-12-12 | 北京爱康宜诚医疗器材有限公司 | Atlantoaxial lateral mass joint fusion device |
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Address after: 102200 Beijing Changping District science and Technology Park No. 10 Patentee after: Beijing AKEC Medical Co., Ltd. Address before: 102200 Beijing Changping District science and Technology Park No. 10 Patentee before: Beijing AKEC Medical Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |