CN112674914A - Visual interbody fusion cage of backbone scope - Google Patents
Visual interbody fusion cage of backbone scope Download PDFInfo
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- CN112674914A CN112674914A CN201910987054.4A CN201910987054A CN112674914A CN 112674914 A CN112674914 A CN 112674914A CN 201910987054 A CN201910987054 A CN 201910987054A CN 112674914 A CN112674914 A CN 112674914A
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Abstract
The application provides a spinal endoscope visual interbody fusion cage which comprises a fusion cage body and a hollow bolt; the head end and the tail end of the fusion cage body along the length direction of the fusion cage body are both open, a cavity is arranged in the fusion cage body, and a bone grafting window and a window are arranged on the side wall of the fusion cage body; the hollow bolt is movably connected in the cavity of the fusion cage body, the hollow bolt is of a cylindrical structure with two open ends, and bone grafting holes are formed in the side wall of the hollow bolt; the bone grafting hole is communicated with the bone grafting window; the spine endoscope passes through the hollow bolt and enters the cavity of the fusion cage body, and the window is used for providing a window for the spine endoscope to observe the outside of the fusion cage body; the hollow plug is internally used for filling bone grafting filler, and the bone grafting hole and the bone grafting window are used for providing a long bone channel. Under the observation of a spinal endoscope, the fusion cage can be accurately implanted into a preset position in a human body, then the hollow bolt is used for filling fillers such as bones, tissues, cells, medicaments and the like, and the intervertebral fusion is better realized.
Description
Technical Field
The application belongs to the technical field of medical equipment, concretely relates to visual interbody fusion cage of backbone scope.
Background
Scoliosis, degenerative disc disease, herniated discs, osteoporosis, spondylolisthesis, and other pathologies of the human spine that result in spinal deformity, pain, nerve damage, and loss of some or all of its mobility. The treatment means for the spinal lesions comprise non-surgical treatment means such as medicines, rehabilitation training and exercise and surgical treatment means. Among them, the surgical treatment is usually spinal fusion.
When performing spinal fusion, the surgeon typically first resects the disc at the site of the lesion and then inserts the cage into the disc space to replace the resected disc. The cage is shaped to match the shape of the disc space to facilitate insertion into the disc space. The cage is filled with fillers such as bone, tissue, cells, drugs, etc. to facilitate bone in-growth from both sides of the cage into the cage, and ultimately, fixation of the cage. However, the present inventors have found in the course of their research and development that the insertion of the cage after the filler is filled first, may cause the filler to be loose and the intervertebral fusion to be inaccurate, in the course of inserting the existing cage into the intervertebral disc space. Because the interior of the fusion cage is not visible, nerves or blood vessels around the spine are often touched during the implantation of the fusion cage; in addition, the fusion cage is not expandable, so that the fusion cage is easy to withdraw from the human body, and the body of a patient is injured.
Disclosure of Invention
To overcome, at least in part, the problems of the related art, the present application provides an intra-spinal visual interbody cage.
According to an embodiment of the application, the application provides a spinal endoscopic visualization interbody fusion cage, which comprises a fusion cage body and a hollow bolt; the head end and the tail end of the fusion cage body along the length direction of the fusion cage body are both open, a cavity is arranged in the fusion cage body, and a bone grafting window and a window are arranged on the side wall of the fusion cage body;
the hollow bolt is movably connected in the cavity of the fusion cage body, the hollow bolt is of a cylindrical structure with two open ends, and bone grafting holes are formed in the side wall of the hollow bolt; the bone grafting hole is communicated with the bone grafting window;
the spine endoscope penetrates through the hollow bolt to enter the cavity of the fusion cage body, and the window is used for providing a window for the spine endoscope to observe the outside of the fusion cage body; the hollow bolt is internally used for filling bone grafting filler, and the bone grafting hole and the bone grafting window are used for providing a long bone channel.
In the spine endoscope visual interbody fusion cage, the cavity is arranged in the fusion cage body along the central axis of the fusion cage body in the length direction;
an inner mirror window is arranged at the head end of the fusion cage body in the length direction and is communicated with a cavity in the fusion cage body; the tail end of the fusion cage body in the length direction is provided with an access hole, and the access hole is communicated with a cavity in the fusion cage body;
the bone grafting windows are correspondingly arranged on the upper end surface and the lower end surface of the fusion cage body along the central axis of the fusion cage body in the height direction, and are communicated with the cavity inside the fusion cage body;
along fuse ware body width direction's axis, the window corresponds sets up fuse the ware body on preceding terminal surface and the rear end face, the window with fuse the inside cavity UNICOM of ware body.
Further, the head end of the hollow bolt penetrates through the access hole and then is screwed in the cavity inside the fusion cage body.
Furthermore, the fusion cage body comprises a holding part and a spreading part, and the head end of the holding part and the tail end of the spreading part are integrally formed or fixedly connected together along the length direction of the fusion cage body;
along the length direction of the opening part, from the head end of the opening part to the position close to the head end of the holding part, Y-shaped grooves are formed in the front end surface and the rear end surface of the opening part, and the Y-shaped grooves form the window; the Y-shaped groove divides the strutting part into an upper limb and a lower limb.
Furthermore, the inner walls of the upper limb and the lower limb are provided with limit steps close to the head end of the fusion cage body in the length direction.
Furthermore, the diameter of the circular cross section formed by one ends of the four limiting steps far away from the inner wall of the expanding part is smaller than that of the head end of the hollow bolt.
Further, the inner diameter of the holding part is 3mm to 12mm, and the inner diameter of the hollow plug is 2mm to 11 mm.
Furthermore, along the length direction of the fusion cage body, the head end of the upper limb and the head end of the lower limb are both subjected to smooth processing, concave notches are correspondingly arranged at the head ends of the upper limb and the lower limb, and the two concave notches form the endoscope window.
Furthermore, the bone grafting window is correspondingly arranged on the upper surface of the upper limb and the lower surface of the lower limb, and the upper surface of the upper limb and the lower surface of the lower limb are both provided with inverted teeth.
In the visual interbody fusion cage of backbone scope, at least one U type breach has been seted up on the lateral wall of the tail end of hollow bolt, the tail end of hollow bolt passes through the U type breach is connected with outside twist grip.
According to the above embodiments of the present application, at least the following advantages are obtained: the visual interbody fusion cage of the spinal endoscope is provided with a fusion cage body and a hollow bolt, wherein a cavity is arranged in the fusion cage body, and a bone grafting window and a window are arranged on the side wall of the fusion cage body; the hollow bolt is movably connected in the cavity of the fusion cage body, the hollow bolt is of a cylindrical structure with two open ends, and bone grafting holes are formed in the side wall of the hollow bolt; the bone grafting hole is communicated with the bone grafting window; the spinal endoscope can observe the external condition of the fusion cage body through the window, thereby effectively avoiding tissue blood vessels and nerves; under the observation of a spinal endoscope, the fusion cage can be accurately implanted into a preset position in a human body, then fillers such as bones, tissues, cells, medicaments and the like are filled through the hollow bolt, the bones and the fillers grow alternately through the bone implantation hole and the bone implantation window, intervertebral fusion is better realized, and the problems of loose fillers and fusion failure caused by the fact that the fusion cage is implanted after the fillers are filled firstly are solved.
According to the visual interbody fusion cage with the spinal endoscope, the window formed in the fusion cage body divides the head end of the fusion cage body in the length direction into the upper limb and the lower limb, the hollow bolt is screwed into the cavity in the fusion cage body to support the upper limb and the lower limb, and the requirements of different vertebral body gaps can be met; in addition, set up the pawl on the upper surface of upper limbs and the lower surface of the lower limbs body, can make this application visual interbody fusion cage of backbone endoscope closely the card firmly centrum after implanting human intervertebral space and struts, avoid interbody fusion cage to retreat and cause the injury to patient's health.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the scope of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification of the application, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
Fig. 1 is an overall structural schematic diagram of a spine endoscopic visualization expandable intervertebral fusion cage according to an embodiment of the present application.
Fig. 2 is a top view of a spinal endoscopic visualization expandable intervertebral cage according to an embodiment of the present disclosure, with the hollow bolt partially screwed into the cage body.
Fig. 3 is a front view of a cage body in a spine endoscopic visualization expandable intervertebral cage according to an embodiment of the present application.
Fig. 4 is a left side view of a cage body in the spine endoscopic visualization expandable intervertebral cage according to the embodiment of the present application.
Fig. 5 is a right side view of a cage body in the spine endoscopic visualization expandable intervertebral cage according to an embodiment of the present application.
Description of reference numerals:
1. a fusion cage body; 11. an inner mirror window; 12. an access hole; 13. a bone grafting window; 14. a window; 15. a grip portion; 16. a distraction section; 161. an upper limb; 162. a lower limb; 163. a limiting step; 164. chamfering; 165. a concave notch;
2. a hollow bolt; 21. bone grafting holes; 22. a U-shaped notch.
Detailed Description
For the purpose of promoting a clear understanding of the objects, aspects and advantages of the embodiments of the present application, reference will now be made to the accompanying drawings and detailed description, wherein like reference numerals refer to like elements throughout.
The illustrative embodiments and descriptions of the present application are provided to explain the present application and not to limit the present application. Additionally, the same or similar numbered elements/components used in the drawings and the embodiments are used to represent the same or similar parts.
As used herein, the terms "first," second, "" etc. do not denote any order or sequential or any other order, nor are they used to limit the application, but rather are used to distinguish one element from another element or operation described in such technical language.
With respect to directional terminology used herein, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology used is intended to be illustrative and is not intended to be limiting of the present teachings.
As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.
As used herein, "and/or" includes any and all combinations of the described items.
References to "plurality" herein include "two" and "more than two"; reference to "multiple sets" herein includes "two sets" and "more than two sets".
As used herein, the terms "substantially", "about" and the like are used to modify any slight variation in quantity or error that does not alter the nature of the variation. In general, the range of slight variations or errors that such terms modify may be 20% in some embodiments, 10% in some embodiments, 5% in some embodiments, or other values. It should be understood by those skilled in the art that the aforementioned values can be adjusted according to actual needs, and are not limited thereto.
Certain words used to describe the present application are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present application.
As shown in figures 1-5, the application provides a visual interbody fusion cage with a spinal endoscope, which comprises a fusion cage body 1 and a hollow bolt 2.
Along the central axis of the length direction of the fusion cage body 1, a cavity is arranged inside the fusion cage body 1.
The head end of the length direction of the fusion cage body 1 is provided with an endoscope window 11, and the endoscope window 11 is communicated with the cavity inside the fusion cage body 1. The opening of the inner mirror window 11 is convenient for an operator to observe tissue blood vessels, nerves and the like in the implantation direction of the fusion cage body 1 through a spinal endoscope. After the fusion cage body 1 is implanted into a human body, bone grafting can be performed through the endoscopic window 11.
An access hole 12 is formed at the tail end of the fusion cage body 1 in the length direction, and the access hole 12 is communicated with a cavity inside the fusion cage body 1. The access hole 12 is provided to facilitate the hollow bolt 2 to be screwed into the hollow cavity inside the fusion cage body 1.
Along the axis of 1 direction of height of integration ware body, all correspond on the up end of integration ware body 1 and the terminal surface down and seted up bone grafting window 13, bone grafting window 13 and the inside cavity UNICOM of integration ware body 1.
Along the axis that fuses 1 width direction of ware body, all correspond on the preceding terminal surface of fusing ware body 1 and the rear end face and seted up window 14, window 14 and the cavity UNICOM of fusing ware body 1 inside. After the fusion cage body 1 is implanted into a human body, bone grafting can be performed through the viewing window 14. Through seting up window 14, utilize backbone endoscope can be accurate observe the important tissue blood vessel and the nerve that fuse ware body 1 met at implantation in-process to improve the security of this application backbone endoscope visual interbody fusion cage at implantation human in-process.
The hollow bolt 2 is of a cylindrical structure with two open ends, and bone grafting holes 21 are formed in the side wall of the hollow bolt 2. The head end of the hollow bolt 2 is screwed in the cavity inside the fusion cage body 1 after passing through the access hole 12, and the bone grafting hole 21 is communicated with the bone grafting window 13. Can fill fillers such as skeleton, tissue, cell and medicament to the cavity of fusing ware body 1 inside through hollow bolt 2, skeleton and filler can alternate growth through planting bone window 13 and planting bone hole 21 to the realization is fixed to this application visual interbody fusion cage of backbone endoscope. The tail end of the hollow bolt 2 is connected with an external rotating handle.
In this embodiment, the cavity inside the fusion cage body 1 can limit the head end of the hollow bolt 2, preventing the hollow bolt 2 from being screwed out of the fusion cage body 1.
Before the spine endoscope visual interbody fusion cage is implanted into a human body, a spine endoscope penetrates through the hollow bolt 2 and enters a cavity in the fusion cage body 1; and then the spine endoscope visual interbody fusion cage and the spine endoscope are operated as a whole. After implanting the visual interbody fusion cage of this application backbone scope in human preposition, can pack fillers such as skeleton, tissue, cell and medicament to the cavity of fusion cage body 1 inside through hollow bolt 2 to carry out definite fusion between this application interbody fusion cage and the centrum of being convenient for.
At the human in-process of visual interbody fusion cage implantation of this application backbone scope, backbone scope can let the clear condition of seeing fusion cage body 1 inside of operating personnel, and backbone scope also can let the clear condition of seeing fusion cage body 1 outside of operating personnel through window 14 and scope window 11 to can effectively avoid the important tissue blood vessel and the nerve that run into in-process to implanting.
When fuse ware body 1 accurately reaches intervertebral space preset position, rotatory hollow bolt 2 makes hollow bolt 2 arrive preset position at fuse ware body 1 inside along the length direction that fuses ware body 1, and the head end that fuses ware body 1 length direction is strutted, plants bone hole 21 on the hollow bolt 2 and plants bone window 13 on fusing ware body 1 and link up, and the backbone scope can observe through planting bone hole 21 that plant bone window 13 and the laminating of vertebra body are in the same place.
The bone grafting hole 21 is aligned with the bone grafting window 13 in the height direction of the cage body 1. The head end of the length direction of the fusion cage body 1 is strutted, and then fillers such as bones, tissues, cells and medicaments can be filled into the cavity inside the fusion cage body 1 through the hollow bolt 2, so that the bones and the fillers can grow alternately, and finally the fixation of the visual intervertebral fusion cage of the spinal endoscope can be realized, and the problems of loose fillers and fusion failure caused by the fact that the fusion cage is implanted after the filling is firstly avoided.
In the embodiment, the fusion cage body 1 and the hollow plug 2 can be made of medical titanium alloy Ti-6A1-4V, Ti-24Nb-4Zr-8Sn or PEEK (polyetheretherketone) material, and the surface of the fusion cage body and the surface of the hollow plug are coated with hydroxyapatite coating. The fusion cage body 1 and the hollow bolt 2 can be both made by adopting a 3D printing technology.
In a specific embodiment, as shown in fig. 2 and 3, the cage body 1 includes a grip portion 15 and a distracting portion 16. The head end of the holding part 15 and the tail end of the expanding part 16 are integrally formed or fixedly connected together along the length direction of the fusion cage body 1.
Specifically, the inner diameter of the grip 15 is 3mm to 12mm, and the inner diameter of the hollow plug 2 is 2mm to 11 mm.
In the longitudinal direction of the expanding portion 16, from the head end of the expanding portion 16 to a position close to the head end of the holding portion 15, Y-shaped grooves are formed in both the front end surface and the rear end surface of the expanding portion 16, and the Y-shaped grooves constitute the viewing window 14. In the process of implanting the visual interbody fusion cage of spinal endoscope into the human body, the spinal endoscope can observe the blood vessels and nerves of the important tissues outside the fusion cage body 1 through the window 14. In addition, after the visual interbody fusion cage of backbone scope of this application is implanted the human body, also can carry out the bone grafting through window 14.
The Y-shaped groove divides the distracting part 16 into an upper limb 161 and a lower limb 162. The inner walls of the upper limb 161 and the lower limb 162 are provided with a limit step 163 near the front end of the fusion cage body 1 in the longitudinal direction. The diameter of the circular cross section formed by the ends of the four limit steps 163 far from the inner wall of the expanding portion 16 is smaller than the diameter of the head end of the hollow plug 2, so that the displacement of the hollow plug 2 in the internal cavity of the fusion cage body 1 can be limited. When the hollow plug 2 reaches the limit step 163, the upper limb body 161 and the lower limb body 162 are spread to the maximum opening degree.
It is understood that, in the longitudinal direction of the expanding portion 16, rectangular grooves may be formed in the front end surface and the rear end surface of the expanding portion 16 from the front end of the expanding portion 16 to a position close to the front end of the grip portion 15, and the rectangular grooves constitute the viewing window 14. Further, the rectangular groove may be a rounded rectangular groove.
When the opening part 16 is opened, the fusion cage body 1 has a structure with a wide head end and a narrow tail end, which completely conforms to the biomechanical state of the human body.
As shown in fig. 1 and 2, bone grafting windows 13 are correspondingly formed in the upper surface of the upper limb body 161 and the lower surface of the lower limb body 162, and are provided with inverted teeth 164, so that the visual intervertebral fusion cage with the spinal endoscope can be tightly clamped on a vertebral body after being implanted into an intervertebral space of a human body to be expanded by the arrangement of the inverted teeth 164, and the intervertebral fusion cage is prevented from retreating. The bone grafting window 13 may be a rounded rectangle, a rectangle, an ellipse, a circle, or the like.
In the above embodiment, the inner wall of the holding portion 15 is provided with an internal thread, the outer wall of the hollow plug 2 is provided with an external thread, and the hollow plug 2 is connected with the holding portion 15 by a thread.
Further, internal threads are provided on the inner walls of both the upper limb 161 and the lower limb 162 near the trailing end of the expanding portion 16 in the longitudinal direction. Internal threads provided on the upper limb 161 and the lower limb 162 mate with external threads of the hollow plug 2 for guiding the hollow plug 2.
The outer wall of the holding part 15 is provided with an external thread which is used for matching with an internal thread of an external holding handle sleeve.
As shown in fig. 4, the head end of the upper limb 161 and the head end of the lower limb 162 are smoothly rounded along the longitudinal direction of the fusion cage body 1, concave notches 165 are provided at the head ends of the upper limb 161 and the lower limb 162, respectively, and the two concave notches 165 constitute the endoscope window 11.
In this embodiment, as shown in fig. 1 and 2, at least one U-shaped notch 22 is formed on a side wall of the tail end of the hollow bolt 2, so that the tail end of the hollow bolt 2 can be connected with an external rotating handle.
In a specific embodiment, two bone grafting holes 21 are formed on the side wall of the middle part of the hollow bolt 2, and four U-shaped notches 22 are formed on the side wall of the tail end of the hollow bolt 2. Wherein, along the circumference of the cross section of the hollow bolt 2, the difference between the two bone grafting holes 21 is 180 degrees. The four U-shaped notches 22 are uniformly arranged along the circumference of the tail end of the hollow bolt 2, and the included angle between every two adjacent U-shaped notches 22 is 90 degrees. The two bone grafting holes 21 and the corresponding U-shaped notches 22 are respectively positioned on the same curved surface.
In another embodiment, four bone grafting holes 21 are formed on the side wall of the middle part of the hollow bolt 2, and four U-shaped notches 22 are formed on the side wall of the rear end of the hollow bolt 2. Wherein, along the circumference of the cross section of the hollow bolt 2, the difference between the four bone grafting holes 21 is 90 degrees, so that the side wall of the hollow bolt 2 is in a four-side through state. The four U-shaped notches 22 are uniformly arranged along the circumference of the rear end of the hollow bolt 2, and the included angle between every two adjacent U-shaped notches 22 is 90 degrees. The four bone grafting holes 21 and the corresponding U-shaped notches 22 are respectively positioned on the same curved surface.
In the above embodiments, the fusion cage body 1 may have a rectangular, oval or circular cross section or a kidney-shaped cross section. The shape of the hollow bolt 2 is matched with the cavity inside the fusion cage body 1.
When the visual interbody fusion cage of this application backbone scope is used in clinic, the internal thread screw in of holding part 15 in the fusion cage body 1 is passed through to the head end of hollow bolt 2, and the internal thread of holding handle sleeve pipe is screwed the external screw thread of holding part 15 in the fusion cage body 1, inserts the twist grip in holding handle sleeve pipe and blocks the U type breach 22 of hollow bolt 2 tail end, becomes integrative reserve.
The intervertebral disc in the human intervertebral space is removed completely, and after the vertebral end plate is properly treated, the spinal endoscope is inserted into the hollow bolt 2 and the fusion device body 1 through the rotating handle to reach the endoscope window 11.
Under the observation of the spinal endoscope through a human body skin incision, tissues are slowly separated, pass through fascia and muscles and reach the outer edge of a vertebral body, and at the moment, nerves and blood vessels can be seen through the spinal endoscope through the window 14 of the fusion device body 1. In the working channel of the spinal endoscope, the nerve of the blood vessel is pulled open by a nerve drag hook, the fusion device is gently conveyed to a preset position in the centrum gap, and the rotating handle is twisted, so that the head end of the hollow bolt 2 can be seen to move forwards towards the head end of the fusion device body 1.
The hollow bolt 2 slowly props open the fusion cage body 1 to reach a limit position, at the moment, the bone grafting hole 21 of the hollow bolt 2 is completely aligned with the bone grafting window 13 of the fusion cage body 1, and the inverted teeth 164 on the upper surface and the lower surface of the fusion cage body 1 are completely clamped with the vertebral body. Through the working channel of backbone scope, fill into autologous or xenogenous skeleton, tissue, cell and medicament and tie 2 and fuse the cavity of ware body 1, rotatory withdraw from to hold handle and twist grip, observe the tail end condition of fusing ware body 1 with the backbone scope, withdraw from the backbone scope. And (5) suturing the incision and finishing the operation.
The foregoing is merely an illustrative embodiment of the present application, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principles of the present application shall fall within the protection scope of the present application.
Claims (10)
1. A visual intervertebral fusion cage of backbone endoscope, characterized by, including fusion cage body and hollow bolt; the head end and the tail end of the fusion cage body along the length direction of the fusion cage body are both open, a cavity is arranged in the fusion cage body, and a bone grafting window and a window are arranged on the side wall of the fusion cage body;
the hollow bolt is movably connected in the cavity of the fusion cage body, the hollow bolt is of a cylindrical structure with two open ends, and bone grafting holes are formed in the side wall of the hollow bolt; the bone grafting hole is communicated with the bone grafting window;
the spine endoscope penetrates through the hollow bolt to enter the cavity of the fusion cage body, and the window is used for providing a window for the spine endoscope to observe the outside of the fusion cage body; the hollow bolt is also internally used for filling bone grafting filler, and the bone grafting hole and the bone grafting window are used for providing a long bone channel.
2. The endoscopic spinal visualization interbody cage of claim 1, wherein the cavity is disposed inside the cage body along a central axis of a length direction of the cage body;
an inner mirror window is arranged at the head end of the fusion cage body in the length direction and is communicated with a cavity in the fusion cage body; the tail end of the fusion cage body in the length direction is provided with an access hole, and the access hole is communicated with a cavity in the fusion cage body;
the bone grafting windows are correspondingly arranged on the upper end surface and the lower end surface of the fusion cage body along the central axis of the fusion cage body in the height direction, and are communicated with the cavity inside the fusion cage body;
along fuse ware body width direction's axis, the window corresponds sets up fuse the ware body on preceding terminal surface and the rear end face, the window with fuse the inside cavity UNICOM of ware body.
3. The endoscopic spinal visualization interbody fusion cage of claim 2, wherein the head end of the hollow plug is screwed into the cavity inside the cage body after passing through the access hole.
4. The spine endoscope visualization interbody fusion cage of claim 2 or 3, wherein the cage body comprises a holding part and a strutting part, and the head end of the holding part and the tail end of the strutting part are integrally formed or fixedly connected together along the length direction of the cage body;
along the length direction of the opening part, from the head end of the opening part to the position close to the head end of the holding part, Y-shaped grooves are formed in the front end surface and the rear end surface of the opening part, and the Y-shaped grooves form the window; the Y-shaped groove divides the strutting part into an upper limb and a lower limb.
5. The spinal endoscopic visualization interbody fusion cage of claim 4, wherein a limiting step is disposed on the inner wall of each of the upper and lower limbs near the head end of the cage body in the length direction.
6. The endoscopic visualization interbody fusion cage of claim 5, wherein the diameter of the circular cross section formed by the ends of the four limiting steps away from the inner wall of the distraction portion is smaller than the diameter of the head end of the hollow bolt.
7. The endoscopic visualization interbody fusion cage of claim 4, wherein the inner diameter of the holding portion is 3mm to 12mm, and the inner diameter of the hollow plug is 2mm to 11 mm.
8. The visual interbody fusion cage of claim 4, wherein the head ends of the upper and lower limbs are rounded along the length direction of the cage body, and concave notches are correspondingly formed at the head ends of the upper and lower limbs, and the two concave notches form the endoscopic window.
9. The endoscopic spinal visual interbody fusion cage of claim 4, wherein the bone-implanted window is correspondingly formed on the upper surface of the upper limb and the lower surface of the lower limb, and the upper surface of the upper limb and the lower surface of the lower limb are respectively provided with inverted teeth.
10. The visual interbody fusion cage of claim 1, 2 or 3, wherein the side wall of the tail end of the hollow bolt is provided with at least one U-shaped notch, and the tail end of the hollow bolt is connected with an external rotating handle through the U-shaped notch.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910987054.4A CN112674914A (en) | 2019-10-17 | 2019-10-17 | Visual interbody fusion cage of backbone scope |
| TW109109319A TWI738256B (en) | 2019-10-17 | 2020-03-20 | Spine endoscopic visualization interbody fusion cage |
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| CN201910987054.4A CN112674914A (en) | 2019-10-17 | 2019-10-17 | Visual interbody fusion cage of backbone scope |
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| CN112674914A true CN112674914A (en) | 2021-04-20 |
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| CN110025412A (en) * | 2019-05-21 | 2019-07-19 | 谢林 | The minimally invasive expanding Invasive lumbar fusion device of novel cervical vertebra under a kind of Percutaneous endoscopic |
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| CN211356082U (en) * | 2019-10-17 | 2020-08-28 | 北京东玥润骐医疗技术发展有限公司 | Visual interbody fusion cage of backbone scope |
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| CN101268963A (en) * | 2008-04-15 | 2008-09-24 | 叶晓健 | Adjustable intervertebral fusion device and holding device |
| CN104958126A (en) * | 2015-07-24 | 2015-10-07 | 北京市春立正达医疗器械股份有限公司 | Spine fusion fixing device |
| KR20180009611A (en) * | 2016-07-19 | 2018-01-29 | 김정성 | Spinal Cage of Porous Structure |
| CN107865714A (en) * | 2016-09-22 | 2018-04-03 | 劳伯特·S·萨德达比 | Expandable interbody fusion implant |
| WO2018119672A1 (en) * | 2016-12-27 | 2018-07-05 | 马向阳 | Vertebral plate interbody fusion cage |
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Also Published As
| Publication number | Publication date |
|---|---|
| TW202116267A (en) | 2021-05-01 |
| TWI738256B (en) | 2021-09-01 |
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