CN104856786A - Zero-incisure anterior cervical vertebra artificial vertebra - Google Patents
Zero-incisure anterior cervical vertebra artificial vertebra Download PDFInfo
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- CN104856786A CN104856786A CN201510298378.9A CN201510298378A CN104856786A CN 104856786 A CN104856786 A CN 104856786A CN 201510298378 A CN201510298378 A CN 201510298378A CN 104856786 A CN104856786 A CN 104856786A
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Abstract
The invention discloses a zero-incisure anterior cervical vertebra artificial vertebra which comprises a vertebra body. The vertebra body is of an integrated structure manufactured and formed by polyether ether ketone resin materials, observation holes are evenly distributed in the vertebra body, the vertebra body is formed by a semi-cylinder part and a plate part, a containing cavity is defined by the semi-cylinder part and the plate part, the two ends of the semi-cylinder part are each provided with at least one set of sawteeth, the plate part is provided with fixing holes inclined towards the outer side, and the section of the vertebra body is of a trapezoid structure. The zero-incisure anterior cervical vertebra artificial vertebra has the advantages that the integrated structure manufactured and formed by the polyether ether ketone resin materials is simple and convenient to manufacture; the vertebra body of the trapezoid structure conforms to the physiological bending, the artificial vertebra can be put in and fixed more easily, the installation stability of the artificial vertebra is further enhanced through the sawteeth, and whether packing in the containing cavity are tamped or not can be conveniently observed through the observation holes; the fixing holes are arranged to be inclined outwards, the fixing holes conform to the physiological bending, and fixing screws can be tapped into the upper edge and the lower edge of the vertebra body to achieve effective fixation.
Description
Technical field
The present invention relates to orthopaedics implanted prosthetics field, especially for the artificial substituent that orthopaedics is implanted, referring in particular to is a kind of zero incisura anterior cervical vertebrae artificial vertebral body.
Background technology
Current intervertebral disc of cervical vertebra degenerative disorders, spinal canal stenosis, previously Fusion failure, pseudarthrosis etc. are cases common clinically.Anterior cervical decompression fusion is applied comparatively general in the clinical treatment of cervical spondylosis, previously anterior decompression Reconstruction is mainly with three dough cover matter limbs ilia transplantation cervical spondylosiss, but about have the patient of 20% to get bony site to occur untoward reaction, and apply fibula bone grafting and very easily cause pseudoarticulation formation, but in operative treatment, because the support of bone grafting bone block is comparatively short of, the postoperative complication such as cervical vertebra kyphosis, the slippage of bone grafting bone block is continued to increase, brings totally unfavorable impact to surgical result and Rehabilitation.
Existing therapeutic method of surgery has mainly been come by the method implanting cervical steel plate and titanium net at diseased region.But current used anterior cervical vertebrae titanium net, its poor stability, and need with cervical steel plate with the use of, when this causes operation, opening is large, complex operation, the defects such as operating time is long, price is high, also can give the body and mind of patient and bring no small burden economically.
Summary of the invention
Technical problem to be solved by this invention is the present situation for prior art, provides structure simple, good biocompatibility, easy to operate one zero incisura anterior cervical vertebrae artificial vertebral body.
The present invention solves the problems of the technologies described above adopted technical scheme:
A kind of zero incisura anterior cervical vertebrae artificial vertebral body, comprise vertebral body body, vertebral body body is the integrative-structure of polyether-ether-ketone resin materials processing molding, vertebral body body is evenly equipped with observation port, vertebral body body is made up of semicolumn portion and flat part, and semicolumn portion and flat part surround and form container cavity, and the two ends in semicolumn portion are shaped with at least one group of sawtooth respectively, flat part is provided with the fixing hole tilted laterally, the cross section of vertebral body body is trapezium structure.
For optimizing technique scheme, the concrete measure taked also comprises:
Above-mentioned vertebral body body is shaped with the accommodating hole for setting X-ray developing body on y direction.
Above-mentioned fixing hole totally four, is divided into two groups, often organizes two; Two groups of fixing holes take transversal line as axis of symmetry symmetry difference, and two fixing holes in same group are that axis of symmetry is symmetrical with longitudinal axis.
The inclination angle of above-mentioned fixing hole is 45 °.
Stop step is provided with in above-mentioned fixing hole.
Locking screw thread is shaped with in above-mentioned fixing hole.
Above-mentioned vertebral body body is provided with the holding tank being convenient to fixed apparatus clamping.
Totally three groups, above-mentioned sawtooth, the outer end of three groups of sawtooth is an inclined-plane.
The outer wall of above-mentioned flat part is arc structure.
Above-mentioned observation port is matrix distribution.
Compared with prior art, a kind of zero incisura anterior cervical vertebrae artificial vertebral body of the present invention, be the integrative-structure of polyether-ether-ketone resin materials processing molding, structure is simple, easy to make; The cross section of vertebral body body is trapezium structure, meets physiological bending, and be more conducive to putting into and fixing of artificial vertebral body, the setting of sawtooth further enhances the stability of artificial vertebral body installation, and whether the implant that the setting of observation port is convenient in observation container cavity tamps; Adopt oblique outside fixing hole to arrange, meet physiological bending, hold-down screw can be squeezed in lower edge vertebral body to play and effectively fix.
In addition, because polyether-ether-ketone resin material does not develop at X-ray line, the accommodating hole for setting X-ray developing body being set, being convenient to X-ray examination.
Vertebral body body being provided with the holding tank being convenient to fixed apparatus clamping, when putting into this artificial vertebral body, fixed apparatus being sandwiched in holding tank place, convenient operation.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention;
Fig. 2 is front view of the present invention;
Fig. 3 is the top view of Fig. 2;
Fig. 4 is the left view of Fig. 2;
Fig. 5 is the upward view of Fig. 2;
Fig. 6 is the sectional view of Fig. 5 A-A.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Embodiment as shown in Figures 1 to 6,
Figure grade illustrates: inclined angle alpha, vertebral body body 1, observation port 1a, container cavity 1b, accommodating hole 1c, semicolumn portion 11, flat part 12, sawtooth 2, fixing hole 3, locking screw thread 3a, stop step 31, holding tank 4.
As shown in Figures 1 to 6,
A kind of zero incisura anterior cervical vertebrae artificial vertebral body of the present invention, comprise vertebral body body 1, vertebral body body 1 is the integrative-structure of polyether-ether-ketone resin materials processing molding, vertebral body body 1 is evenly equipped with observation port 1a, vertebral body body 1 is made up of semicolumn portion 11 and flat part 12, and semicolumn portion 11 and flat part 12 surround and form container cavity 1b, and the two ends in semicolumn portion 11 are shaped with at least one group of sawtooth 2 respectively, flat part 12 is provided with the fixing hole 3 tilted laterally, the cross section of vertebral body body 1 is trapezium structure.
The cross section of vertebral body body 1 adopts trapezium structure, meets physiological bending, after artificial vertebral body loads cervical vertebra, contribute to the normal physiological lordosis of recovery cervical vertebra (if cervical vertebra side physiologic radian is too straight, or rear convex, all easily accelerate cervical spine degeneration, even cause disease to occur).And the broached-tooth design at vertebral body body 1 two ends, artificial vertebral body and upper lower edge vertebral body can be made to fit better, strengthen the stability connected.
Whether the pathological changes vertebral body of patient before implantation, need take off, then be packed in container cavity 1b by autologous spongiosa bone by artificial vertebral body, by being distributed in the observation port 1a on vertebral body body 1, can observing autologous spongiosa bone in container cavity 1b and tamping; In addition, after artificial vertebral body is implanted, fibroblast can be grown in observation port 1a, and artificial vertebral body and tissue are combined together, has calcification and stock trend, can strengthen the stability of postoperative maintenance, promote good Bony union after a period of time.
Polyether-ether-ketone resin material, i.e. PEEK material are containing the linear aromatic race macromolecular compound of chain link in a kind of molecular backbone, and its component unit is oxygen-to phenylene-oxygen-carbonyl-to phenylene, is hemicrystalline, thermoplastic.PEEK material is a kind of excellent performance
special engineering plasticscompared with other special engineering plastics, there is more significant advantages, resistance to positive high temperature 260 degree, mechanical performance are excellent, self lubricity is good, chemicals-resistant burn into is fire-retardant, peel resistance, wear-resisting, radioprotective, its mechanical performance be widely used in the fields such as high-end machinery, aviation.In addition, the resistance to autoclaving repeatedly of PEEK material, has high strength and low stripping property, and has the good compatibility with human body, is the ideal material of manufacturing artificial vertebral body.
The two ends in semicolumn portion 11 are all shaped with sawtooth 2, and the lateral symmetry of one end is provided with sawtooth 2, and the sawtooth 2 on same level line is one group.
In embodiment, totally three groups, sawtooth 2, the size of three groups of sawtooth 2 increases gradually along the waist of trapezium structure, and the outer end of three groups of sawtooth 2 is an inclined-plane.The waist of this inclined-plane and trapezium structure coincides.
In embodiment, vertebral body body 1 is shaped with the accommodating hole 1c for setting X-ray developing body on y direction.Due to polyether-ether-ketone resin material radiotransparent under X-ray, in order to fluoroscopic examination is convenient, in accommodating hole 1c, imbed the X-ray developing body be made up of titanium alloy material.Can be observed at fluoroscopy during operation by X-ray developing body, whether the trailing edge of artificial vertebral body exceedes vertebral body trailing edge, if exceed vertebral body trailing edge, judges that artificial vertebral body enters intraspinal tube compressing spinal cord.
In embodiment, fixing hole 3 totally four, is divided into two groups, often organizes two; Two groups of fixing holes 3 take transversal line as axis of symmetry symmetry difference, and two fixing holes 3 in same group are that axis of symmetry is symmetrical with longitudinal axis.
In embodiment, the inclined angle alpha of fixing hole 3 is 45 °.
In embodiment, be provided with in fixing hole 3 and stop step 31.
In embodiment, in fixing hole 3, be shaped with locking screw thread 3a.
Fixing hole 3 is symmetrical, is conducive to improving fixing reliability and stability.The outward-dipping setting of fixing hole 3, can make hold-down screw squeeze in lower edge vertebral body, thus play fixation, and the inclined angle alpha of fixing hole 3 is designed to 45 °, can make that hold-down screw is as much as possible to be squeezed in lower edge vertebral body, to improve fastness.
And in fixing hole 3, be provided with stop step 31, when hold-down screw can be avoided to be screwed into, entered dark and affected fixed effect; And the locking screw thread 3a arranged in fixing hole 3, further enhance the connection of hold-down screw and artificial vertebral body, ensure that the reliability of connection.
In embodiment, vertebral body body 1 is provided with the holding tank 4 being convenient to fixed apparatus clamping.Because artificial vertebral body volume is very little, directly very inconvenient with hand operated, need during implantation to assist with fixed apparatus; The clamping that holding tank 4 greatly facilitates fixed apparatus is set, effectively can improves operating efficiency.
In embodiment, the outer wall of flat part 12 is arc structure.Arc structure can ensure that artificial conical surface is smooth.
In embodiment, observation port 1a is matrix distribution.
Most preferred embodiment of the present invention is illustrated, and the various change made by those of ordinary skill in the art or remodeling all can not depart from the scope of the present invention.
Claims (10)
1. an incisura anterior cervical vertebrae artificial vertebral body, comprise vertebral body body (1), it is characterized in that: the integrative-structure that described vertebral body body (1) is polyether-ether-ketone resin materials processing molding, described vertebral body body (1) is evenly equipped with observation port (1a), described vertebral body body (1) is made up of semicolumn portion (11) and flat part (12), described semicolumn portion (11) and flat part (12) surround and form container cavity (1b), the two ends in described semicolumn portion (11) are shaped with at least one group of sawtooth (2) respectively, described flat part (12) is provided with the fixing hole (3) tilted laterally, the cross section of described vertebral body body (1) is trapezium structure.
2. a kind of zero incisura anterior cervical vertebrae artificial vertebral body according to claim 1, is characterized in that: described vertebral body body (1) is shaped with the accommodating hole (1c) for setting X-ray developing body on y direction.
3. a kind of zero incisura anterior cervical vertebrae artificial vertebral body according to claim 2, is characterized in that: described fixing hole (3) four, is divided into two groups totally, often organizes two; Two groups of fixing holes (3) take transversal line as axis of symmetry symmetry difference, and two fixing holes (3) in same group are that axis of symmetry is symmetrical with longitudinal axis.
4. a kind of zero incisura anterior cervical vertebrae artificial vertebral body according to claim 3, is characterized in that: the inclination angle (α) of described fixing hole (3) is 45 °.
5. a kind of zero incisura anterior cervical vertebrae artificial vertebral body according to claim 4, is characterized in that: be provided with in described fixing hole (3) and stop step (31).
6. a kind of zero incisura anterior cervical vertebrae artificial vertebral body according to claim 5, is characterized in that: be shaped with locking screw thread (3a) in described fixing hole (3).
7. a kind of zero incisura anterior cervical vertebrae artificial vertebral body according to claim 6, is characterized in that: described vertebral body body (1) is provided with the holding tank (4) being convenient to fixed apparatus clamping.
8. a kind of zero incisura anterior cervical vertebrae artificial vertebral body according to claim 7, it is characterized in that: totally three groups, described sawtooth (2), the outer end of three groups of sawtooth (2) is an inclined-plane.
9. a kind of zero incisura anterior cervical vertebrae artificial vertebral body according to claim 8, is characterized in that: the outer wall of described flat part (12) is arc structure.
10. a kind of zero incisura anterior cervical vertebrae artificial vertebral body according to claim 9, is characterized in that: described observation port (1a) is in matrix distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510298378.9A CN104856786A (en) | 2015-06-03 | 2015-06-03 | Zero-incisure anterior cervical vertebra artificial vertebra |
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| CN201510298378.9A CN104856786A (en) | 2015-06-03 | 2015-06-03 | Zero-incisure anterior cervical vertebra artificial vertebra |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105726170A (en) * | 2016-02-03 | 2016-07-06 | 广州粤倍生物科技有限公司 | Individual osteosarcoma cervical vertebra prosthesis |
| CN106175998A (en) * | 2016-07-08 | 2016-12-07 | 李鹏 | A kind of personalized prosthese and preparation method thereof and using method |
| CN109481101A (en) * | 2018-12-28 | 2019-03-19 | 西安交通大学医学院第二附属医院 | A kind of anterior approach self-retaining artificial vertebral body |
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| CN204219014U (en) * | 2014-11-11 | 2015-03-25 | 江苏安格尔医疗器械有限公司 | A kind of PEEK cervical fusion cage |
| CN204744513U (en) * | 2015-06-03 | 2015-11-11 | 胡勇 | Passerby is good at centrum before zero notch cervical vertebra |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1565396A (en) * | 2003-06-09 | 2005-01-19 | 上海上材生物材料有限公司 | Artificial vertebra |
| US8840668B1 (en) * | 2009-11-11 | 2014-09-23 | Nuvasive, Inc. | Spinal implants, instruments and related methods |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105726170A (en) * | 2016-02-03 | 2016-07-06 | 广州粤倍生物科技有限公司 | Individual osteosarcoma cervical vertebra prosthesis |
| CN106175998A (en) * | 2016-07-08 | 2016-12-07 | 李鹏 | A kind of personalized prosthese and preparation method thereof and using method |
| CN109481101A (en) * | 2018-12-28 | 2019-03-19 | 西安交通大学医学院第二附属医院 | A kind of anterior approach self-retaining artificial vertebral body |
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Application publication date: 20150826 |