CN105287061A - Interface type interbody fusion cage - Google Patents
Interface type interbody fusion cage Download PDFInfo
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- CN105287061A CN105287061A CN201510866674.4A CN201510866674A CN105287061A CN 105287061 A CN105287061 A CN 105287061A CN 201510866674 A CN201510866674 A CN 201510866674A CN 105287061 A CN105287061 A CN 105287061A
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Abstract
The invention relates to an interface type interbody fusion cage. The interface type interbody fusion cage comprises a fusion part A, a fusion part B and a connection part connected between the fusion part A and the fusion part B. The outer end face of the fusion part A and the outer end face of the fusion part B are each of a porous mesh structure, meshes A of the porous mesh structure of the outer end face of the fusion part A penetrate through the fusion part A axially, an opening in the inner side of each mesh A is larger than an opening in outer side of the mesh A, meshes B of the porous mesh structure of the outer end face of the fusion part B penetrate through the fusion part B axially, and an opening in the inner side of each mesh B is larger than an opening in outer side of the mesh B. As the inner parts of the meshes A and the meshes B in the end faces are larger than the outer parts, the vertebral body can not be pulled out of an fusion cage body once bones grow in from the meshes A and the meshes B, the bones grow in from the two end faces of the fusion cage body, and therefore the fusion cage body plays the role of a supporting connector. The interface type interbody fusion cage greatly shortens the bone growth distance and healing time and increases the fusion rate, so that postoperative immobilization time is shortened for a patient, and mental and physical pain of the patient is alleviated.
Description
Technical field
The present invention relates to technical field of medical instruments, particularly relate to a kind of interfacial type Invasive lumbar fusion device.
Background technology
ACDF is widely used in treating various cervical spondylosis and has reached 60 years, traditional discectomy Intervertebral fusion is emphasized " vertebral fusion "---bone is from upper hypocentrum toward central authorities' growth healing, but due to anatomical physiology reason, upper hypocentrum spacing is far away, " creeping substitution healing journey " very long and hard (about the 1cm) of bone, healing time is longer, client need is worn neck brace braking and is reached 3-6 month, very large discomfort is brought to patients ' psychological and health, and work position can not be returned in time, bring loss to family, society, country.
Summary of the invention
The present invention aims to provide a kind of interfacial type Invasive lumbar fusion device, shortens the Distance geometry healing time of osteogenesis, reduces time and the misery of the postoperative braking of patient, and can improve bone fusion rate.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of interfacial type Invasive lumbar fusion device, comprise fusion portion A, fusion portion B and be connected to the connecting portion between fusion portion A, fusion portion B, the outer face of described fusion portion A and fusion portion B is reticulated porous structures, the mesh A of the reticulated porous structures of A outer face, fusion portion axially runs through fusion portion A, in described mesh A, side opening is greater than outer openings, the mesh B running through the reticulated porous structures of B outer face, fusion portion axially runs through fusion portion B, and in described mesh B, side opening is greater than outer openings.Large outer little in mesh A and mesh B, bone once grow into from mesh A and mesh B, vertebral body cannot be extracted from fusion device body, bone is grown into from fusion device body end face and bottom surface, play the effect of interface fusion, once Interface Bone is integrated reach stable, fusion device body will play the effect of a support and connection thing, merges object and realizes.
Preferably, through hole A axially runs through fusion portion A, fusion portion B and connecting portion, and the diameter of described through hole A is greater than the diameter of mesh A and mesh B.Through hole A is so that vertebral bone to be grown into in fusion device body by through hole A large area and converged with offside vertebral bone, but this function is extra, be double-safety, mesh structural porous bone interface healing can make intervertebral and fusion device Integrated implant reach Stabilization; Through hole A can also be used for the filling duct use of Invasive lumbar fusion device bone material, comprises ilium, artificial bone etc.; The blood vessel blood fortune nutrient substance being simultaneously also convenient to vertebral body comprises some and becomes bone stimulating factor through this hole to fusion device central permeate.
Preferably, described connecting portion is hollow circuit cylinder, and the external diameter of described connecting portion is identical with the diameter of fusion portion A, fusion portion B, and described connecting portion, fusion portion A and fusion portion B are coaxial.Hollow design, is beneficial to again placement bone-grafting material.
Preferably, all there is agnail the outer face of described fusion portion A and fusion portion B.Strutting interbody space, after implanting fusion device body, unclamp dilator, vertebral body bounces back to central authorities, and part is pressed into vertebral body, standing activity after operation in patients by agnail, agnail will be pressed into vertebral body by cervical region gravity further completely, because have agnail, so the i.e. stabilizability of Invasive lumbar fusion device is better, without the need to extra Interal fixation; If for the patient that the cervical stabilities such as fracture dislocation are bad, while this type of fusion device, Ye Keqian road is additionally fixed with steel plate screw, but in Patients with Cervical Spondylopathy, without the need to using extra fixing.
Further, the side of described connecting portion has through hole B, it is inner that described through hole B is communicated with connecting portion.Through hole B may be used for packing material use, especially after fusion device body is laid, still injects the materials such as more semi-solid artificial bone by this hole, various nutrient substance, stimulating factor also can be facilitated to be entered by this hole, promote osteogenesis.
Further, the side of described connecting portion is along the circumferential direction all divided into four faces, and one of them side is sealing surface, and other three sides are reticulated porous structures, on side, the mesh C of reticulated porous structures is communicated with connecting portion inside, and the face at described sealing surface and through hole B place is just right.Mesh C is conducive to blood vessel blood fortune nutrient substance and comprises some these holes of one-tenth bone stimulating factors process to the infiltration of fusion device body central, facilitates various nutrient substance, stimulating factor to be entered by this hole.The design of sealing surface is to prevent bone-grafting material from coming off to intraspinal tube, protecting spinal cord.
Preferably, be provided with support column in described connecting portion, described support column is located at connecting portion inside or is combined together with the wall of connecting portion, and described support column one end is connected with fusion portion A, and the support column other end is connected with fusion portion B, and described support column has 2 at least.Support column, for increasing fusion device intensity, prevents interface from subsiding.
Further, the outer face of described fusion portion A and fusion portion B is all attached with hydroxyapatite coating layer.Hydroxyapatite coating layer has increases the effect of osteogenesis Integrated implant.
Further, described fusion portion A, fusion portion B axial dimension are 1 ~ 2mm, and the wall thickness of described connecting portion is 1 ~ 2mm.
Compared with prior art, the present invention has following beneficial effect:
Large outer little in mesh A on end face of the present invention and mesh B, bone is once grow into from mesh A and mesh B, and vertebral body cannot be extracted from fusion device body, and bone is grown into from fusion device body both ends of the surface, plays the effect of interface fusion; The design of mesh A and mesh B, the blood vessel blood fortune nutrient substance being also convenient to vertebral body comprises some and becomes bone stimulating factor through this hole to fusion device central permeate.Once Interface Bone is integrated reach stable, fusion device body will play the effect of a support and connection thing.The present invention makes intervertebral fusion shorten to 2 millimeter from " 1 centimetre " left and right, greatly shortens the distance of osteogenesis, healing time, improves fusion rate, thus decrease the time of the postoperative braking of patient, alleviate patient's body and mind painful.
Accompanying drawing explanation
Fig. 1 is the top view of embodiment 1 and embodiment 2;
Fig. 2 is the sectional view of embodiment 1;
Fig. 3 is the front view of embodiment 1;
Fig. 4 is the rearview of embodiment 1;
Fig. 5 is the sectional view of embodiment 2;
In figure: 1-mesh A, 2-mesh B, 3-through hole A, 4-support column, 5-through hole B, 6-mesh C, 7-agnail.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the present invention is further elaborated.
Embodiment 1
As shown in Figure 1, 2, 3, interfacial type Invasive lumbar fusion device disclosed by the invention, comprise fusion portion A, fusion portion B and be connected to the connecting portion between fusion portion A, fusion portion B, the outer face of fusion portion A and fusion portion B is reticulated porous structures, the mesh A1 of the reticulated porous structures of A outer face, fusion portion axially runs through fusion portion A, in mesh A1, side opening is greater than outer openings, the mesh B2 running through the reticulated porous structures of B outer face, fusion portion axially runs through fusion portion B, and in mesh B2, side opening is greater than outer openings.Fusion device body center is provided with through hole A3, and through hole A3 axially runs through fusion portion A, fusion portion B and connecting portion, and the diameter of through hole A3 is greater than the diameter of mesh A2 and mesh B2, and through hole A3 diameter is 4mm.The outer face of fusion portion A and fusion portion B is all attached with hydroxyapatite coating layer.The outer face of fusion portion A and fusion portion B is evenly equipped with 4 agnails 7, and agnail 7 has barb, the long 3mm of agnail 3, and fusion portion A, fusion portion B and connecting portion are one-body molded.
Connecting portion is cylinder, and the external diameter of connecting portion is identical with the diameter of fusion portion A, fusion portion B, and connecting portion, fusion portion A and fusion portion B are coaxial.The side of connecting portion is along the circumferential direction all divided into four faces, one of them side is sealing surface, other three sides are reticulated porous structures, and on side, the mesh C6 of reticulated porous structures is communicated with connecting portion inside, and mesh C6 diameter is greater than the diameter of mesh A2 and mesh B2.There is through hole B5 in a face relative with described sealing surface, and through hole B5 diameter is 3 ~ 4mm, and fusion portion A, fusion portion B axial dimension are 1 ~ 2mm.
Embodiment 2
The difference of the present embodiment and embodiment 1 is: as shown in Figure 3,4, connecting portion is hollow circuit cylinder, fusion portion A and B central authorities of fusion portion all axially have through hole A3, it is inner that through hole A3 is communicated with connecting portion, through hole A3 on through hole A3 on fusion portion A and fusion portion B is just right, and the wall thickness of connecting portion is 1 ~ 2mm.Because connecting portion is hollow, so be provided with support column 4 in connecting portion, support column 4 can be located at connecting portion inside and also can combine together with the wall of connecting portion, play reinforcement, support column 4 one end is connected with fusion portion A, and support column 4 other end is connected with fusion portion B, and support column 4 has 2 at least.Preferably, support column 4 has 4, is distributed on circumferentially same, and this circumference, through hole A3, connecting portion three are coaxial.Support column 4 and fusion device body material are titanium alloy.Intervertebral fusion osteogenesis of the present invention shortens to 2 millimeter from " 1 centimetre " left and right, greatly shorten the distance of osteogenesis thus shorten healing time, like this, after operation in patients, braking time can shorten to 1 month from 3 to 6 months, decrease time and the misery of the postoperative braking of patient, patient only need wear and within one month, just can return work unit and work on.At present, be not that the bone of each patient can grow to 1cm and meets, after the present invention shortens osteogenesis distance, osteogenesis difficulty reduces, and fusion rate is improved, and after operation in patients, the complication such as pseudoarticulation formation, pain will reduce.And the mesh design of fusion device body three sides, end face and bottom surface, significantly increase the packing space of inner bone-grafting material, increase inner and vertebral body surface of bone, the inner contact with front, two sides, also the blood vessel blood fortune nutrient substance being convenient to vertebral body comprises some and becomes bone stimulating factor through this hole to fusion device central permeate, stimulate skeletonization, Promotive union.
Certainly; the present invention also can have other numerous embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the present invention.
Claims (10)
1. an interfacial type Invasive lumbar fusion device, it is characterized in that: comprise fusion portion A, fusion portion B and be connected to the connecting portion between fusion portion A, fusion portion B, the outer face of described fusion portion A and fusion portion B is reticulated porous structures, the mesh A (1) of the reticulated porous structures of A outer face, fusion portion axially runs through fusion portion A, the interior side opening of described mesh A (1) is greater than outer openings, the mesh B (2) running through the reticulated porous structures of B outer face, fusion portion axially runs through fusion portion B, and the interior side opening of described mesh B (2) is greater than outer openings.
2. interfacial type Invasive lumbar fusion device according to claim 1, it is characterized in that: through hole A (3) axially runs through fusion portion A, fusion portion B and connecting portion, and the diameter of described through hole A (3) is greater than the diameter of mesh A (2) and mesh B (2).
3. interfacial type Invasive lumbar fusion device according to claim 1, is characterized in that: described connecting portion is hollow circuit cylinder, and the external diameter of described connecting portion is identical with the diameter of fusion portion A, fusion portion B, and described connecting portion, fusion portion A and fusion portion B are coaxial.
4. interfacial type Invasive lumbar fusion device according to claim 1, is characterized in that: all there is agnail (3) outer face of described fusion portion A and fusion portion B.
5. interfacial type Invasive lumbar fusion device according to claim 3, is characterized in that: the side of described connecting portion has through hole B (5), and it is inner that described through hole B (5) is communicated with connecting portion.
6. interfacial type Invasive lumbar fusion device according to claim 5, it is characterized in that: the side of described connecting portion is along the circumferential direction all divided into four faces, one of them side is sealing surface, other three sides are reticulated porous structures, on side, the mesh C (6) of reticulated porous structures is communicated with connecting portion inside, and the face at described sealing surface and through hole B (5) place is just right.
7. interfacial type Invasive lumbar fusion device according to claim 3, it is characterized in that: in described connecting portion, be provided with support column (4), described support column (4) is located at connecting portion inside or is combined together with the wall of connecting portion, described support column (4) one end is connected with fusion portion A, support column (4) other end is connected with fusion portion B, and described support column (4) has 2 at least.
8. interfacial type Invasive lumbar fusion device according to claim 1, is characterized in that: the outer face of described fusion portion A and fusion portion B is all attached with hydroxyapatite coating layer.
9. interfacial type Invasive lumbar fusion device according to claim 3, is characterized in that: described fusion portion A and fusion portion B all axially has through hole A (3), and it is inner that through hole A (3) is communicated with connecting portion.
10. interfacial type Invasive lumbar fusion device according to claim 3, is characterized in that: described fusion portion A, fusion portion B axial dimension are 1 ~ 2mm, and the wall thickness of described connecting portion is 1 ~ 2mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510866674.4A CN105287061B (en) | 2015-12-01 | 2015-12-01 | A kind of interfacial type Invasive lumbar fusion device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510866674.4A CN105287061B (en) | 2015-12-01 | 2015-12-01 | A kind of interfacial type Invasive lumbar fusion device |
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| CN105287061A true CN105287061A (en) | 2016-02-03 |
| CN105287061B CN105287061B (en) | 2017-08-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109925102A (en) * | 2019-04-12 | 2019-06-25 | 北京大学第三医院 | Lumbar Fusion prosthese |
| CN112998917A (en) * | 2021-02-19 | 2021-06-22 | 陈赞 | Lower cervical vertebra lateral mass prosthesis |
| CN113143550A (en) * | 2021-05-20 | 2021-07-23 | 四川大学 | Fusion cage with multi-level bionic active fusion function and preparation method thereof |
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| CN113143550A (en) * | 2021-05-20 | 2021-07-23 | 四川大学 | Fusion cage with multi-level bionic active fusion function and preparation method thereof |
| CN113143550B (en) * | 2021-05-20 | 2023-05-05 | 四川大学 | Fusion device with multi-layer bionic active fusion function and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN105287061B (en) | 2017-08-25 |
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