CN204839839U - Artificial intervertebral disc - Google Patents
Artificial intervertebral disc Download PDFInfo
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- CN204839839U CN204839839U CN201520457072.9U CN201520457072U CN204839839U CN 204839839 U CN204839839 U CN 204839839U CN 201520457072 U CN201520457072 U CN 201520457072U CN 204839839 U CN204839839 U CN 204839839U
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- China
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- upper head
- head plate
- bottom plate
- intervertebral disk
- disk prosthesis
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Abstract
The utility model provides an artificial intervertebral disc belongs to the medical instrument field for artifical neck intervertebral disc displacement technique, which comprises a body, the body is the U type the splice bar of upper head plate, lower end plate and connection upper head plate, lower end plate trailing edge, the splice bar is the arc structure, and the upper head plate, the end plate leading edge is the same with corresponding vertebra curvature down, and the side all is equipped with fixed structure, stopping pawl and pore membrane with time end plate downside on the upper head plate, side on the upper head plate, the leading edge of end plate downside are down located to the fixed structure, and fixed establishment is equipped with the fixed orifices, side on the upper head plate, the the first part of of end plate downside are down located to the stopping pawl, and the pawl slopes to the trailing edge, side and end plate downside are down located on the upper head plate to the pore membrane. The utility model discloses a stability of postoperative intervertebral disc has been guaranteed to double stopping pawl and pore membrane, has prevented deviating from of false body, the stability of intervertebral disc has been guaranteed to the fixed structure, and the elastic connection muscle has increased comfort level, flexibility and the bearing capacity of false body.
Description
Technical field
This utility model belongs to medical instruments field, especially relates to a kind of intervertebral disk prosthesis.
Background technology
Intervertebral disc disorder caused by a variety of causes destroys the integrity of intervertebral disc structure, makes intervertebral disc lose the function of its original motion and bearing load, as degenerative disc disease, has had a strong impact on the daily routines of people.Traditional methods of surgical carries out intervertebral fusion, the side effect of this Therapeutic Method makes the vertebral body at illness intervertebral disc two ends be fused into an entirety, destroy proper motion and the bearing function of lesion segment, have also been changed the biomechanics state of adjacent segment intervertebral disc and other tissue simultaneously, result in Adjacent segment degeneration aggravation, therefore its late result is all not good enough.In order to the function of reconstruction of intervertebral disc, recover the physiological status of spinal column, people have invented artificial disc after arthroplasty.
Common cervical artificial disc product structure is loaded down with trivial details, operation relative complex, easily cause ectopic ossification problem, and resisting fatigue and wear resistance poor, fatigue fracture, fatigue wear cause prosthese easily to produce wear particle, wearing and tearing particle can cause aseptic bone absorption, cause prosthetic replacement failure, postoperative easy generation complication.
Summary of the invention
In view of this, this utility model is intended to propose a kind of intervertebral disk prosthesis, meets the requirement of long-life anti-fatigue performance, greatly improves the mobility of patient's lesion segment, is conducive to the quality of life after improving operation in patients.
For achieving the above object, the technical solution of the utility model is achieved in that
A kind of intervertebral disk prosthesis, for the replacement of cervical intervertebral disk, comprise body, described body is U-shaped, comprise upper head plate, bottom plate and connect the dowel of upper head plate, bottom plate trailing edge, described dowel is arcuate structure, and described upper head plate is identical with corresponding vertebra curvature with the leading edge of bottom plate, and upper head plate upper side and bottom plate downside are equipped with fixed structure, retaining pawl and pore membrane;
Described fixed structure is located at the leading edge of upper head plate upper side, bottom plate downside, and fixed mechanism is provided with fixing hole;
Described retaining pawl is located at the first half of upper head plate upper side, bottom plate downside, and pawl tilts to trailing edge;
Described pore membrane is located at upper head plate upper side and bottom plate downside.
Further, described dowel at least one, preferably 2.
Further, described fixing hole is screw.
Further, the outer rim of described fixed structure is identical with the curvature of upper head plate, bottom plate.
Further, it is capable that described retaining pawl is in axial direction provided with 3-5, and string is respectively established in longitudinal center line both sides.
Further, two row retaining pawls are located at the both sides of the longitudinal center line of short slab and bottom plate.
Further, between the described pore membrane latter half of being located at upper head plate and bottom plate and the pawl of first half.
Further, described pore membrane is polyethylene pore membrane.
Further, described upper head plate and bottom plate are made by pottery except pore membrane covering place.
Further, described dowel is made up of elastomeric material.
Relative to prior art, a kind of intervertebral disk prosthesis described in the utility model, has following advantage:
Double retaining pawl and pore membrane ensure that the stable of Postoperative Intervertebral, prevent deviating from of prosthese; The design of fixed structure ensure that the stable of intervertebral disc, and elasticity dowel adds the comfort level of prosthese, motility and weight capacity.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model 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 covers the structural representation of upper head plate upper side and bottom plate downside for the pore membrane described in this utility model embodiment;
Fig. 2 is the upper head plate upper side of pore membrane covering except retaining pawl described in this utility model embodiment and the structural representation of bottom plate downside.
Description of reference numerals:
1-upper head plate, 2-bottom plate, 3-dowel, 4-retaining pawl, 5-fixed structure, 51-fixing hole, 6-pore membrane.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in this utility model 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.
As shown in Figure 1-2, a kind of intervertebral disk prosthesis, comprise body, described body is U-shaped, comprise upper head plate 1, bottom plate 2 and connect the dowel 3 of upper head plate 1, bottom plate 2 trailing edge, described dowel 3 is arcuate structure, and described upper head plate 1 is identical with corresponding vertebra curvature with the leading edge of bottom plate 2, and upper head plate 1 upper side and bottom plate 2 downside are equipped with fixed structure 5, retaining pawl 4 and pore membrane 6;
Described fixed structure 5 is located at the leading edge of upper head plate 1 upper side, bottom plate 2 downside, and fixed mechanism 5 is provided with fixing hole 51;
Described retaining pawl 4 is located at the first half of upper head plate 1 upper side, bottom plate 2 downside, and retaining pawl 4 tilts to trailing edge;
Described pore membrane 6 is located at upper head plate 1 upper side and bottom plate 2 downside.
Preferably, described dowel 3 at least one, preferred dowel 3 has 2, and is made up of pottery or titanium alloy.
Preferably, described fixing hole 51 is screw, is connected by this intervertebral disk prosthesis by screw with vertebra.
Preferably, the outer rim of described fixed structure 5 is identical with the curvature of upper head plate 1, bottom plate 2, simultaneously identical with the curvature of vertebra.
Preferably, it is capable that described retaining pawl 4 is in axial direction provided with 3-5, and be more preferably provided with 4 whereabouts and move back pawl 4, string is respectively established in longitudinal center line both sides, and two row are located at the both sides of upper head plate 1 and bottom plate 2.
Preferably, described pore membrane 6 is located at the latter half of upper head plate 1 and bottom plate 2, and first half is in two separate ranks between retaining pawl 4, and pore membrane 6 is polyethylene pore membrane, and described upper head plate 1 and bottom plate 2 are except pore membrane 6 covering place is all for being become by ceramic.
Implantation process:
Before implantation, first diskectomy is carried out to patients with cervical and upper hypocentrum is polished, first slightly tighten up the front end of upper head plate 1 and bottom plate 2 retaining pawl 4 with instrument adjustment pincers during implantation, then be inserted into gently between the vertebral body having excised intervertebral disc, ensure that the safe distance implanting rear cervical artificial disc rear end distance vertebral foramen is 3-4mm, the retaining pawl 4 of upper head plate 1 is contacted with epipyramis, the retaining pawl 4 of bottom plate 2 contacts with lower vertebra, then by bolt, intervertebral disk prosthesis and upper and lower vertebra are fixed, thus make intervertebral disk prosthesis be stuck between upper and lower vertebra, the elasticity of self is relied on to replace original elastic cervical intervertebral disk.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; 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 intervertebral disk prosthesis, for cervical artificial disc replacement, it is characterized in that: comprise body, described body is U-shaped, comprise upper head plate, bottom plate and connect the dowel of upper head plate, bottom plate trailing edge, described dowel is arcuate structure, and the leading edge of described upper head plate, bottom plate is identical with corresponding vertebra curvature, and upper head plate upper side and bottom plate downside are equipped with fixed structure, retaining pawl and pore membrane;
Described fixed structure is located at the leading edge of upper head plate upper side, bottom plate downside, and fixed mechanism is provided with fixing hole;
Described retaining pawl is located at the first half of upper head plate upper side, bottom plate downside, and pawl tilts to trailing edge.
2. a kind of intervertebral disk prosthesis according to claim 1, is characterized in that: described dowel at least one.
3. a kind of intervertebral disk prosthesis according to claim 1, is characterized in that: described fixing hole is screw.
4. a kind of intervertebral disk prosthesis according to claim 1 or 3, is characterized in that: the outer rim of described fixed structure is identical with the curvature of upper head plate, bottom plate.
5. a kind of intervertebral disk prosthesis according to claim 1, is characterized in that: it is capable that described retaining pawl is in axial direction provided with 3-5, and string is respectively established in longitudinal center line both sides.
6. a kind of intervertebral disk prosthesis according to claim 5, is characterized in that: two row retaining pawls are located at the both sides of the longitudinal center line of upper head plate and bottom plate.
7. a kind of intervertebral disk prosthesis according to claim 1 or 5 or 6, is characterized in that: between the latter half that described pore membrane is located at upper head plate and bottom plate and the pawl of first half.
8. a kind of intervertebral disk prosthesis according to claim 7, is characterized in that: described pore membrane is polyethylene pore membrane.
9. a kind of intervertebral disk prosthesis according to claim 7, is characterized in that: described upper head plate and bottom plate remove pore membrane covering place and make by pottery.
10. a kind of intervertebral disk prosthesis according to claim 1 and 2, is characterized in that: described dowel is made up of elastomeric material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520457072.9U CN204839839U (en) | 2015-06-29 | 2015-06-29 | Artificial intervertebral disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520457072.9U CN204839839U (en) | 2015-06-29 | 2015-06-29 | Artificial intervertebral disc |
Publications (1)
| Publication Number | Publication Date |
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| CN204839839U true CN204839839U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520457072.9U Active CN204839839U (en) | 2015-06-29 | 2015-06-29 | Artificial intervertebral disc |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104939953A (en) * | 2015-06-29 | 2015-09-30 | 北京贝思达生物技术有限公司 | Intervertebral disk prosthesis |
| CN106943212A (en) * | 2016-11-30 | 2017-07-14 | 重庆润泽医药有限公司 | A kind of steady type Invasive lumbar fusion device |
| CN106955174A (en) * | 2016-11-30 | 2017-07-18 | 重庆润泽医药有限公司 | A kind of elastic Invasive lumbar fusion device |
| CN110114038A (en) * | 2016-12-23 | 2019-08-09 | 瑞福克斯集团公司 | For treat farsightedness, with the sclera prosthese for retention in one or more hackly surfaces in scleral tissue or other surfaces |
| CN110368149A (en) * | 2019-08-05 | 2019-10-25 | 北京爱康宜诚医疗器材有限公司 | Intervertebral disk prosthesis |
-
2015
- 2015-06-29 CN CN201520457072.9U patent/CN204839839U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104939953A (en) * | 2015-06-29 | 2015-09-30 | 北京贝思达生物技术有限公司 | Intervertebral disk prosthesis |
| CN106943212A (en) * | 2016-11-30 | 2017-07-14 | 重庆润泽医药有限公司 | A kind of steady type Invasive lumbar fusion device |
| CN106955174A (en) * | 2016-11-30 | 2017-07-18 | 重庆润泽医药有限公司 | A kind of elastic Invasive lumbar fusion device |
| CN110114038A (en) * | 2016-12-23 | 2019-08-09 | 瑞福克斯集团公司 | For treat farsightedness, with the sclera prosthese for retention in one or more hackly surfaces in scleral tissue or other surfaces |
| CN110368149A (en) * | 2019-08-05 | 2019-10-25 | 北京爱康宜诚医疗器材有限公司 | Intervertebral disk prosthesis |
| CN110368149B (en) * | 2019-08-05 | 2024-03-15 | 北京爱康宜诚医疗器材有限公司 | Intervertebral disc prosthesis |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |