CN212261619U - Intervertebral fusion cage with memory alloy self-adaptive opening - Google Patents
Intervertebral fusion cage with memory alloy self-adaptive opening Download PDFInfo
- Publication number
- CN212261619U CN212261619U CN202020282428.0U CN202020282428U CN212261619U CN 212261619 U CN212261619 U CN 212261619U CN 202020282428 U CN202020282428 U CN 202020282428U CN 212261619 U CN212261619 U CN 212261619U
- Authority
- CN
- China
- Prior art keywords
- memory alloy
- self
- cage
- support
- fusion cage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000004927 fusion Effects 0.000 title claims abstract description 48
- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 29
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 57
- 239000000463 material Substances 0.000 claims abstract description 13
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 238000007639 printing Methods 0.000 claims description 3
- 239000007943 implant Substances 0.000 abstract description 11
- 238000002513 implantation Methods 0.000 abstract description 10
- 210000001519 tissue Anatomy 0.000 description 12
- 238000013459 approach Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 230000008093 supporting effect Effects 0.000 description 6
- 206010050296 Intervertebral disc protrusion Diseases 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000001356 surgical procedure Methods 0.000 description 5
- 230000036770 blood supply Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 208000010392 Bone Fractures Diseases 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 208000003618 Intervertebral Disc Displacement Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 235000011837 pasties Nutrition 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 208000008035 Back Pain Diseases 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 208000008930 Low Back Pain Diseases 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 206010033425 Pain in extremity Diseases 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 206010040007 Sense of oppression Diseases 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 208000007103 Spondylolisthesis Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000011888 autopsy Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 239000003364 biologic glue Substances 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 230000003412 degenerative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 208000015122 neurodegenerative disease Diseases 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
Images
Landscapes
- Prostheses (AREA)
Abstract
The utility model provides an interbody fusion cage that memory alloy self-adaptation struts belongs to the medical instrument field, support including a hollow cage frame net body structure, the material of support is medical titanium nickel memory alloy, the upper surface of support and the lower end plate in close contact with who implants the vertebra body on the intervertebral space, the lower surface with implant the upper end plate in close contact with of the next vertebra body in intervertebral space, upper and lower surface all designs into the dome, it has the bone grafting window to open on one of four walls of support. The utility model discloses simple to operate, can strut automatically after the implantation and adapt to intervertebral space, can not only the bearing, can also with end plate in close contact with, a large amount of bone grafting fuse in order to promote the bone grafting from the intervertebral space.
Description
Technical Field
The utility model relates to a medical instrument, in particular to an intervertebral fusion cage which is self-adaptively propped open by memory alloy.
Background
Intervertebral fusion surgery is one of the most successful surgical approaches to the treatment of degenerative diseases of the spine at present. Taking the lumbar disc herniation as an example, the incidence rate of the lumbar disc herniation is found to be about 15-30% according to foreign autopsy, and patients with symptomatic lumbar disc herniation are about 10% of the total population according to clinical statistics, wherein about 10% of patients need surgical treatment, so the incidence rate and the surgical proportion are extremely high. The operation of lumbar intervertebral disc protrusion is mainly divided into: the method comprises the following steps of simple discectomy, lumbar non-fusion surgery and lumbar fusion surgery. However, long-term follow-up shows that the recurrence rate of patients with pure nucleus pulposus removal reaches 10%, and the overall effect of non-fusion operations including artificial disc replacement is not satisfactory, and the patients finally receive the intervertebral fusion operation. Thus, intervertebral fusion is currently an extremely important surgical modality, which may also be referred to as the ultimate treatment of degenerative lumbar disease.
In the interbody fusion art, the fusion cage is the most extensive implant of using at present, and its function is that intervertebral supports and cage receive the bone grafting tissue, makes intervertebral endplate and bone grafting tissue fully contact about providing relatively stable mechanical environment, rebuilds bone grafting material blood circulation, finally becomes the bone tissue that has the support ability through the substitution effect of crawling, reaches intervertebral bony fusion's steady state, also thoroughly eliminates the nervous tissue oppression that the unstability that causes in this clearance, irritates the low back and leg pain that leads to. Although the movable segment of the spine is reduced after the fusion between the vertebral bodies, the treatment effect is exact, so far, the traditional operation mode for treating diseases such as lumbar intervertebral disc protrusion, spinal canal stenosis and lumbar spondylolisthesis is still used. The interbody fusion cage is generally used in combination with pedicle screws, and can be used alone in a few cases, such as anterior approach and lateral approach interbody fusion.
In the intervertebral fusion cage commonly used at present, main materials comprise PEEK, carbon fiber, titanium alloy and the like, and the intervertebral fusion cage has good tissue compatibility. However, the shape of the implant is fixed, most of the implant is cuboid or kidney-shaped, part of the implant is provided with a contact surface with a certain radian, and the implant can be implanted through one side or two sides of the rear part and also has a cuboid structure implanted from the side. Its advantages are high supporting strength, tooth-inverted structure on its surface, tight contact between the fixed curved surface or plane and the end plate of vertebral body, small internal space, less bone grafting amount, less contact area between end plate of vertebral body and bone tissue, and slow and difficult fusion between vertebrae.
SUMMERY OF THE UTILITY MODEL
To the interbody fusion cage that uses at present not enough, the utility model provides an interbody fusion cage that memory alloy self-adaptation struts that be convenient for the installation, can adapt to intervertebral space automatically and have certain function, can with intervertebral space under endplate in close contact with, can plant the bone in a large number in order to promote to plant the bone fusion.
The utility model discloses the technical scheme who adopts as follows:
an embodiment of the utility model provides an interbody fusion cage that memory alloy self-adaptation struts, support including a hollow cage frame net body structure, the material of support is medical titanium nickel memory alloy, the upper surface of support and the lower endplate in close contact with of implanting the vertebra body on the intervertebral space, the lower surface and the upper endplate in close contact with of implanting the next vertebra body in intervertebral space, upper and lower surface all design into the dome, it plants the bone window to open on one of four walls of support.
Furthermore, the hollow cage frame and net integrated structure is a hexahedral structure, and 4 support columns connected with opposite angles are arranged in the hollow cage frame and net integrated structure.
Further, the frame diameter of the hexahedral structure is larger than the diameter of the mesh.
Furthermore, the upper surface and the lower surface are fine and sparse mesh surfaces, or are in a crossed curved beam structure, or are in a skirt edge mesh structure with the periphery of a central vacancy attached to the frame.
Further, the porosity of the upper and lower surfaces is 80% or more.
Furthermore, the wall surface meshes have pores less than 1mm2。
Furthermore, the front wall surface of the bracket is higher than the rear wall surface, and the left wall surface and the right wall surface are isosceles trapezoids.
Furthermore, sharp teeth protruding towards the vertebral body are respectively arranged on the upper surface and the lower surface corresponding to the upright post on the opposite side of the oblique bone grafting window.
Further, four walls of the bracket are vertical surfaces or cambered surfaces with certain curvature.
Further, the support can be manufactured through a 3D metal printer printing, a casting mold and a plate splicing and punching process.
The soft stent is soft at low temperature (0-5 ℃) and is easy to pass through a narrow part, and the stiffness and the initial form of the soft stent can be gradually recovered in the process of gradually increasing the temperature to the normal body temperature, so that the soft stent has a better distraction function.
The support is of a hexahedral structure with 4 support columns connected with opposite corners inside, and the shape of the support is similar to a square cake. The internal support column is beneficial to the full re-expansion of the structure, and is also beneficial to the space stability of the structure, and the support function of the structure is enhanced.
The frame-net integrated structure of the upper surface, the lower surface and the surrounding walls not only keeps better supporting function, but also has certain elasticity and self-adaptive capacity, and the fine grids not only can contain bone grafting tissues, but also are favorable for establishing good blood supply with the surrounding tissues.
According to different implantation directions, one of the 4 walls of the structure is provided with a bone implantation window, the structure can be pushed to a proper position of the intervertebral space by a hollow push rod by utilizing the pore channel, and the pore channel is also used for implanting self-broken bone particles or artificial bone particles.
Sharp teeth protruding towards the vertebral body are respectively arranged on the upper surface and the lower surface corresponding to the upright post on the oblique opposite side of the bone grafting window, so that the stability of the fusion cage is facilitated.
Meanwhile, after the structure recovers the initial appearance and rigidity, the upper and lower grids or the crossed beams and columns can be in close contact with each other and even partially embedded into the vertebral end plate, so that the structure is more beneficial to the stability.
This structure is that titanium-nickel alloy intensity is higher, designs according to human intervertebral disc shape for occupy the intervertebral space and can reach the maximize, frame net body structure reduces the material as far as possible under keeping sufficient intensity, and the centre is hollow, can the at utmost implant autologous broken bone or artificial bone, makes the crawl of intervertebral bone grafting replace easier and more reliable.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of an intervertebral fusion cage with memory alloy self-adaptive distraction according to an embodiment of the present invention implanted into an intervertebral space;
fig. 2 is a schematic side view of a memory alloy self-adaptive distraction according to an embodiment of the present invention;
fig. 3 is a schematic axial view illustrating a memory alloy self-adaptive spreading according to an embodiment of the present invention;
FIG. 4 is a schematic view of a first upper and lower surface of a bracket according to an embodiment of the present invention;
FIG. 5 is a schematic view of a second upper and lower surface of a bracket according to an embodiment of the present invention;
FIG. 6 is a schematic view of a third upper and lower surface of a bracket according to an embodiment of the present invention;
FIG. 7 is a front view of a stent according to an embodiment of the present invention (front wall with bone window, front implant);
fig. 8 is a rear view of a stent according to an embodiment of the present invention (a bone window is opened on the rear wall surface, and the stent is implanted from the rear side);
fig. 9 is an installation schematic diagram of the bracket, the hollow push rod and the protective sleeve in the embodiment of the present invention;
FIG. 10 is a schematic view of an embodiment of the present invention illustrating a hollow push rod and a protective sleeve being pushed into the intervertebral space;
FIG. 11 is a schematic top view of an embodiment of the present invention illustrating a hollow push rod and a protective sleeve being used to push a stent into a vertebral body;
fig. 12 is a schematic top view of the present invention showing the automatic shape-conforming distraction to a stable state after the stent is pushed into the intervertebral space;
in the figure: the bone grafting support comprises a support 1, an upper vertebral body 2, a lower end plate 3, a lower vertebral body 4, an upper end plate 5, a dome 6, a bone grafting window 7, a crossed curved beam structure 8, sharp teeth 9, a hollow push rod 10, a protection sleeve 11, an upper surface 12, a lower surface 13, a front wall surface 14, a rear wall surface 15, a right wall surface 16, a left wall surface 17 and a support column 18.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. In the following description and in the drawings, the same numbers in different drawings identify the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims. Various embodiments of the present description are described in an incremental manner.
It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the embodiment of the present application are only used to explain the relative position relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indication is changed accordingly.
Therefore, as shown in fig. 1-3, the embodiment of the present invention provides a memory alloy self-adaptive distracting intervertebral fusion cage, including a support 1 which is a hollow cage frame net integrated structure, the material of the support 1 is medical titanium-nickel memory alloy, the upper surface 12 of the support 1 is in close contact with the lower end plate 3 implanted into the superior vertebral body 2 in the intervertebral space, the lower surface 13 is in close contact with the upper end plate 5 implanted into the inferior vertebral body 4 in the intervertebral space, the upper and lower surfaces are both designed into a dome 6 according to the normal intervertebral disc tissue shape, the 4 walls of the front wall surface 14, the rear wall surface 15, the left wall surface 17 and the right wall surface 16 are formed by a thick frame beam and a thin grid, or the left and right wall surface grids are replaced by a cross curved beam structure, and one side of one of the four wall surfaces of the support 1 is provided with an implanted bone window.
In the embodiment, the memory alloy is medical titanium-nickel memory alloy, the surface of the memory alloy is passivated, and the memory alloy is not easy to electrolyze and is non-toxic. The support 1 of the hollow cage frame and net integrated structure is designed integrally and can be manufactured by printing through a 3D metal printer, casting and plate splicing and punching processes. Is made of medical nontoxic titanium-nickel memory alloy, is soft at low temperature (0-5 ℃) and gradually recovers the shape and rigidity when the temperature is raised. The utility model discloses a special sleeve pipe of integration ware accessible (can be the hollow straight tube of stereoplasm, curved tube or hollow hose) and hollow push rod 10 (straight-bar or curved bar) implant, the operation of not only being applicable to the conventional back approach and the operation of side approach, still be applicable to implantation under the minimal access technology scope passageway, can reach the maximum bone grafting in order to do benefit to intervertebral bony fusion after automatic strutting.
In this embodiment, the support 1 is a frame-net integrated structure, and has a hexahedral structure with 4 supporting columns 18 connecting opposite corners inside, the external shape of the hexahedral structure is similar to that of a square cake, and the 4 supporting columns connecting opposite corners are beneficial to fully expanding the structure and also beneficial to the space stability of the structure, so that the supporting function of the structure is enhanced.
In this embodiment, the diameter of the frame of the hexahedral structure is greater than the diameter of the wall surface mesh, or the wall surface mesh is a skirt mesh structure with a central gap and a periphery attached to the frame.
Specifically, the peripheral frame of the hexahedral structure is thick and is a main bearing part, the grids in the middle of the upper surface and the lower surface are thin and sparse, or the periphery of the central vacancy is a skirt grid structure attached to the frame, or a thick crossed curved beam structure 8, and the deformation generated under the action of stress is favorable for the full contact of the structure and the final plate surface of the vertebral body, so that the self-adaptive effect is realized, the load-bearing conformity can be realized, and the partial embedding is favorable for the stability of the endplate fusion device. The upper and lower surfaces have larger porosity (more than 80 percent) which is beneficial to the full contact of bone grafting tissues and end plates of the upper and lower vertebral bodies, the establishment of blood supply and creeping substitution of bone grafting materials are facilitated, and the osseous fusion is achieved as early as possible.
All 4 walls are thick frame roof beam and fine grid structure about this structure, and preceding wall is higher than the back wall, and left and right sides wall is isosceles trapezoid for fuse the ware and implant and keep preceding high back low according to lumbar vertebrae physiological curvature, and peripheral thick frame structure can bear great pressure and keep certain elasticity after intervertebral space, and fine grid has less hole (< 1 mm)2) The device is mainly used for cage bone grafting tissue without overflowing and is beneficial to establishing good blood supply with surrounding tissues.
In this embodiment, the front, rear, left and right walls 4 of the bracket 1 can be vertical surfaces or cambered surfaces with a certain curvature (as shown in fig. 7-8), and the bearing part between the vertebral bodies is mainly located in the frame structure of the bracket, so the frame beam is thick, has a strong supporting effect and maintains a certain elasticity; the meshes of the wall are dense and fine, so that the bone grafting tissue is accommodated, and a better blood supply with the surrounding tissue is favorably established.
In this embodiment, the fusion cage of the present invention is different according to the implantation direction, and the bone implantation window 7 is opened on one wall of the structure, such as shown in fig. 7-8, and is generally designed as a 6-8mm round hole or rectangular hole, and the structure can be pushed to the proper position of the intervertebral space by using the hole via the hollow push rod 10, and the hole is also used for implanting self-body broken bone particles or artificial bone particles. The upper surface and the lower surface of the bone grafting window corresponding to the opposite side upright post are respectively provided with 1 pair of sharp teeth 9 protruding to the vertebral body, and after the structure is implanted to a proper position, the sharp teeth 9 become hard along with the temperature rise and penetrate into the vertebral body to play a role of anchoring and prevent the displacement. The diameter of the hollow push rod is 4mm, warm water can be injected into the hollow push rod from the tail end to facilitate rapid rewarming of the fusion cage, and the head of the push rod is provided with a groove for pushing the bone grafting window to the side upright post so as to facilitate accurate and rapid implantation of the fusion cage.
As shown in figures 9-12, before use, the cage is refrigerated in a freezer at 0-4 ℃, when in use, the tip groove of the hollow push rod 10 clamps the oblique opposite side upright post of the bone grafting window of the cage, the cage is pushed into the protection sleeve 11, the head end of the protection sleeve 11 is placed in the intervertebral space (in the interspinous ligament 12) which is already treated and is to be implanted with the cage, the cage is rapidly pushed to the bottom in an oblique way by the hollow push rod 10, and the tail end of the hollow push rod 10 is injected with warm saline water by a syringe to heat the cage, so that the cage is automatically opened like an umbrella. The hollow push rod 10 and the protective sleeve 11 are taken out, and the bone grafting operation is carried out through the bone grafting window 7, so that the implantation and the bone grafting of the interbody fusion cage can be completed. During the process of implanting the fusion device, the push rod is required to be inclined to the opposite side as far as possible so as to ensure the correct implantation direction, and if the implantation position is not satisfactory, the fusion device is taken out by using ice salt water for softening, and the operation is repeated. When the structure is applied to the lumbar lateral approach operation, the bone grafting window 7 can be designed on the left wall and the right wall, and the upper surface and the lower surface of the obliquely opposite upright post which correspond to each other are provided with the fixing sharp teeth 9 protruding towards the direction of the vertebral body; when the lumbar vertebra posterior approach operation is performed, the bone grafting window 7 is designed on the left side and the right side of the back wall, and the fixing sharp teeth 9 are arranged on the upright columns with oblique opposite angles; the bone grafting windows 7 are designed at the left and right sides of the front wall during the lumbar anterior surgery, and the fixing sharp teeth 9 are arranged on the upright posts at the oblique opposite angles of the rear wall or the guide sharp teeth 9 are cancelled.
In addition, after the fusion cage is implanted into the intervertebral space and is expanded and stabilized, autologous bone grains, pasty injectable bone grafting materials or artificial bone grains can be implanted by using a special bone grafting instrument through the bone grafting window 7, a pasty bone grafting material injection tool or a special bone grafting tool capable of injecting bone grafting grains is suggested to be used for filling and compressing, so that the bone grafting can be fully and closely contacted with the upper end plate and the lower end plate of the vertebral body, the bone grafting window 7 can be plugged by using a large bone grafting block, gelatin sponge or medical biological glue after the bone grafting is finished, and the bone grafting material is prevented from overflowing.
Additionally, according to the utility model discloses, can provide one kind can adapt to the intervertebral space of implanting automatically, elasticity struts this intervertebral space, can reach with the upper and lower centrum end plate the biggest contact surface, can the maximum intervertebral bone grafting and promote the interbody fusion cage of bone fusion. According to the material characteristics of the memory alloy, the initial shape and the rigidity of the frame-net integrated structure are gradually recovered along with the rise of the temperature after the frame-net integrated structure is implanted into an intervertebral space, so that the frame-net integrated structure is automatically adaptive to the surface of an end plate under the action of elasticity and always keeps a close contact state, and even can be partially embedded into the end plate under the action of pressure, thereby being easier to stabilize the structure.
Additionally, the utility model discloses an among the interbody fusion cage that relates, optionally, print through the 3D metal printer, mould and panel concatenation punching technology make, can batch production, also can require individuation customization according to the operation.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.
Claims (10)
1. The utility model provides an interbody fusion cage that memory alloy self-adaptation struts, its characterized in that, includes the support of hollow cage frame net body structure, the material of support is medical titanium nickel memory alloy, the upper surface of support and the lower endplate in close contact with of implanting the intervertebral space upper vertebral body, the lower surface and the upper endplate in close contact with of implanting the intervertebral space lower vertebral body, upper and lower surface all design into the dome, it has the bone grafting window to open on one of four walls of support.
2. The self-adaptive memory alloy distracting intervertebral fusion cage of claim 1, wherein the hollow cage frame and net integrated structure is a hexahedral structure, and 4 support columns connected with opposite corners are arranged inside the hollow cage frame and net integrated structure.
3. The self-adaptive memory alloy distracting intervertebral fusion cage of claim 2, wherein the frame of the hexahedral structure has a diameter greater than that of the mesh.
4. The self-adaptive memory alloy distracting intervertebral fusion cage of claim 2, wherein the upper and lower surfaces are thin and sparse mesh surfaces, or are of a cross curved beam structure, or are of a skirt mesh structure with a central gap and a periphery attached to a frame.
5. The self-adaptive memory alloy distracting intervertebral fusion cage of claim 1, wherein the porosity of the upper and lower surfaces is above 80%.
6. The self-adaptive memory alloy distracting intervertebral fusion cage of claim 4, wherein the wall surface meshes have pores < 1mm2。
7. The self-adaptive memory alloy distracting intervertebral fusion cage of claim 1, wherein the anterior wall of the frame is higher than the posterior wall, and the left and right walls are isosceles trapezoids.
8. The self-adaptive memory alloy distracting intervertebral fusion device of claim 1, wherein the bone grafting window has sharp teeth protruding toward the vertebral body on the upper and lower surfaces corresponding to the oblique opposite side post.
9. The self-adaptive distraction intervertebral fusion device of claim 1, wherein the four walls of the bracket are vertical surfaces or arc surfaces with a certain curvature.
10. A memory alloy self-adaptive distracting intersomatic cage according to claim 1, wherein the scaffold is fabricated by printing with a 3D metal printer, casting and punching with sheet material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020282428.0U CN212261619U (en) | 2020-03-06 | 2020-03-06 | Intervertebral fusion cage with memory alloy self-adaptive opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020282428.0U CN212261619U (en) | 2020-03-06 | 2020-03-06 | Intervertebral fusion cage with memory alloy self-adaptive opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212261619U true CN212261619U (en) | 2021-01-01 |
Family
ID=73874024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020282428.0U Active CN212261619U (en) | 2020-03-06 | 2020-03-06 | Intervertebral fusion cage with memory alloy self-adaptive opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212261619U (en) |
-
2020
- 2020-03-06 CN CN202020282428.0U patent/CN212261619U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6736850B2 (en) | Vertebral pseudo arthrosis device and method | |
| US6245108B1 (en) | Spinal fusion implant | |
| EP1290985B1 (en) | Intersomatic cage for posterior fusion surgery to the lumbar column | |
| US20030055505A1 (en) | Intervertebral fusion device | |
| US20040049282A1 (en) | Artificial disc | |
| KR20020033605A (en) | Prosthetic Spinal Disc Nucleus Having a Shape Change Characteristic | |
| JP2006510446A (en) | Intervertebral implant | |
| CN111166537A (en) | Intervertebral fusion cage that memory alloy self-adaptation was strutted | |
| CN107569309B (en) | Vertebral prosthesis capable of being implanted into long bone | |
| CN204306881U (en) | A kind of memory alloy interbody fusion cage | |
| CN107802383A (en) | Lumbar vertebrae Invasive lumbar fusion device with Bone Ingrowth micropore | |
| CN212261619U (en) | Intervertebral fusion cage with memory alloy self-adaptive opening | |
| CN207236881U (en) | A kind of gap structure portion of POROUS TITANIUM Invasive lumbar fusion device | |
| CN204839837U (en) | Automatic locking formula interbody fusion cage that struts of memory alloy | |
| CN208958415U (en) | A kind of centrum prosthese that can be implanted into long section bone | |
| CN211560551U (en) | Atlantoaxial lateral mass joint fusion cage | |
| CN105310803A (en) | Minimally invasive embedded shape memory interbody fusion cage | |
| CN107669377A (en) | Cervical vertebra Invasive lumbar fusion device with Bone Ingrowth micropore | |
| CN110755182A (en) | Atlantoaxial lateral mass joint fusion cage | |
| CN205626202U (en) | Lumbar vertebrae posterior approach operation's 3D prints bionical bone trabecula structure lumbar vertebrae fusion device | |
| CN210784858U (en) | Tissue engineering cervical vertebra interbody fusion cage | |
| CN219480480U (en) | 3D prints porous tantalum cervical vertebra interbody fusion cage | |
| CN211485105U (en) | Height-adjustable intervertebral fusion support | |
| KR102297980B1 (en) | Expandable vertebra cage | |
| CN215425323U (en) | Non-fusion artificial vertebral body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240521 Address after: Building 7, 1st to 2nd floors, and Building 8, 1st to 2nd floors, Shanghai Jiao Tong University (Jiaxing) Science and Technology Park, No. 321 Jiachuang Road, Xiuzhou District, Jiaxing City, Zhejiang Province, 314000, China Patentee after: ZHEJIANG DECANS MEDICAL INSTRUMENT CO.,LTD. Country or region after: China Address before: No.1882, Zhonghuan South Road, Hangzhou, Zhejiang 314001 Patentee before: The First Hospital of Jiaxing Country or region before: China |
|
| TR01 | Transfer of patent right |