CN110368146B - Rotary expanding type interbody fusion cage - Google Patents
Rotary expanding type interbody fusion cage Download PDFInfo
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- CN110368146B CN110368146B CN201910630880.3A CN201910630880A CN110368146B CN 110368146 B CN110368146 B CN 110368146B CN 201910630880 A CN201910630880 A CN 201910630880A CN 110368146 B CN110368146 B CN 110368146B
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- 230000004927 fusion Effects 0.000 title claims abstract description 126
- 230000005540 biological transmission Effects 0.000 claims abstract description 59
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 208000027418 Wounds and injury Diseases 0.000 description 7
- 238000002513 implantation Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 4
- 238000001727 in vivo Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010061246 Intervertebral disc degeneration Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000031264 Nerve root compression Diseases 0.000 description 1
- 206010037779 Radiculopathy Diseases 0.000 description 1
- 206010041549 Spinal cord compression Diseases 0.000 description 1
- 206010058907 Spinal deformity Diseases 0.000 description 1
- 208000020307 Spinal disease Diseases 0.000 description 1
- 208000007103 Spondylolisthesis Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 208000018180 degenerative disc disease Diseases 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 208000021600 intervertebral disc degenerative disease Diseases 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 210000000278 spinal cord Anatomy 0.000 description 1
- 208000005198 spinal stenosis Diseases 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The invention belongs to the technical field of medical instruments, and particularly relates to a rotary opening type interbody fusion cage which comprises an upper fusion cage body, a lower fusion cage body, a transmission body and a transmission screw. The purpose is as follows: the defects of large wound, serious pain and long recovery time after a single fusion device is implanted in the prior art or the problems of complex operation, long operation time and insufficient stability when a plurality of fusion devices are implanted are overcome.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a rotary expanding type interbody fusion cage.
Background
As is well known, in clinical orthopedics, spinal degeneration is common, and intervertebral disc degeneration, spinal stenosis, spondylolisthesis and spinal cord or nerve root compression are common, so that the patients need surgical treatment, the compression is thoroughly removed, the physiological curvature of the spine is restored, and the spinal stability is guaranteed. Other patients with spinal deformities, trauma, tumors, revision surgery and infections sometimes also undergo intervertebral fusion to stabilize the lumbar segment. The interbody fusion cage has better curative effect aiming at the spinal diseases, has simple operation, convenient use and high fusion rate, has no complication of bone grafting fusion, is generally applied and clinical at present, and adopts a mode that one or more interbody fusion cages are filled into intervertebral discs to effectively open and restore the height of intervertebral space so as to fuse the upper vertebral body and the lower vertebral body.
To ensure good initial stability between the two lumbar segments after surgery, it is often necessary to implant a bulky fusion cage, which, due to its large volume, requires a large incision during surgery, which is detrimental to the patient's post-operative recovery.
The method of forming the fusion cage with enough volume by simultaneously implanting a plurality of smaller fusion cages and then assembling the fusion cages in a human body can reduce the size of an operation wound, but has the problems of complicated operation and prolonged operation time, and the implanted fusion cages do not have a connection relationship with each other, so that the position is not accurately positioned, and the vertebral body is also unstable.
Disclosure of Invention
The purpose of the invention is: aims to provide a rotary expanding type interbody fusion cage, which overcomes the defects of large wound, serious pain and long recovery time after a single fusion cage is implanted in the prior art, or the problems of complex operation, long operation time and insufficient stability when a plurality of fusion cages are implanted.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a rotary opening type interbody fusion cage comprises a fusion cage upper body, a fusion cage lower body, a transmission body and a transmission screw, wherein the fusion cage upper body and the fusion cage lower body are Z-shaped, a first circular groove is formed in the middle of the end face of the fusion cage upper body close to one end of the fusion cage lower body, a second circular groove is formed in the middle of the end face of the fusion cage lower body close to one end of the fusion cage upper body, the fusion cage upper body and the fusion cage lower body are hinged in an X-shaped mode through the transmission body, the first circular groove and the second circular groove are combined to form a cavity for containing the transmission body and the transmission screw, the fusion cage lower body is fixedly connected with the lower end of the transmission body, the fusion cage upper body is rotatably connected with the upper end of the transmission body, a threaded hole matched with the transmission screw is formed in the fusion cage upper body, and the free end of the transmission screw is clamped.
Further defined, the transmission body comprises a circular shaft, a connecting column and a connecting platform, and the diameter size of the connecting column is larger than that of the circular shaft. The upper body and the lower body of the fusion cage are supported by the connecting column, so that a space can be formed between the upper body and the lower body of the fusion cage to accommodate a drive screw.
Further inject, set up on the fusion cage upper part of the body with circular shaft assorted shaft hole, circular shaft and shaft hole are clearance fit, set up on the fusion cage lower part of the body with connection platform assorted connecting hole, connection platform and connecting hole are interference fit. The transmission body is in clearance fit between the circular shaft and the shaft hole, in interference fit between the connecting platform and the connecting hole, and is connected with the upper body of the fusion cage in a rotatable manner and the lower body of the fusion cage in a fixed manner.
Further limit, the connection platform is hexagonal prism, the connecting hole is the hexagonal hole with connection platform interference fit. By the aid of the structural design, the transmission body and the fusion device lower body are fixedly connected through interference fit of the hexagonal prism connecting table and the hexagonal hole, and the hexagonal prism connecting table has higher circumferential rotation bearing capacity compared with a cylindrical connecting table.
Further inject, integrated into one piece has the transverse protrusion piece on the spliced pole, U type draw-in groove has been seted up to transverse protrusion piece free end in the vertical direction of spliced pole axis, drive screw includes threaded rod, round bar and establishes the end with U type draw-in groove assorted card, the threaded rod spiro union is in the screwed hole. According to the structural design, the transmission screw is clamped in the U-shaped clamping groove of the transmission body through the clamping end, and the clamping end is directly clamped from the free end of the U-shaped clamping groove during installation, so that the structure is simple, and the installation is convenient.
Further defined, the transverse lug is arc-shaped. By the structural design, the adjusting range of the transmission body can be enlarged, namely the opening and closing angle range between the upper body and the lower body of the fusion cage is enlarged.
Further inject, U type draw-in groove lateral wall cross-section is the V type, the diameter size that the end was established to the card is greater than the diameter size of pole, the end outer wall is established to the card and is seted up with U type draw-in groove assorted annular V type groove. Such structural design, through the U type draw-in groove that the cross-section of lateral wall is the V type with set up the card in annular V type groove and establish the end cooperation for the card is established the end card and is established in U type draw-in groove, and when drive screw rotated, the rotation of the fusion cage lower part of the body was more smooth and easy.
Further inject, hexagonal blind hole has been seted up to the threaded rod free end. Such structural design, accessible hexagonal spanner rotates the threaded rod to adjust the angle that opens and shuts between the fuse ware upper part of the body and the fuse ware lower part of the body, it is more convenient to use.
Further limit, the end of the upper body of the fusion cage far away from the threaded hole is a convex first arc-shaped surface, and the end of the lower body of the fusion cage corresponding to the first arc-shaped surface is a convex second arc-shaped surface. Due to the structural design, the intervertebral fusion cage can be implanted into the intervertebral space from the operation wound more conveniently through the arrangement of the first arc-shaped surface and the second arc-shaped surface.
Further limit, the upper and lower end surfaces of the upper and lower bodies of the fusion cage are provided with saw tooth structures.
Further inject, the fusion cage upper body is provided with notches on the upper and lower end faces of one end corresponding to the threaded hole. The structure design is convenient for holding and taking the instrument.
The invention adopting the technical scheme has the advantages that:
1. the intervertebral fusion cage which is not expanded has small volume and convenient and fast implantation process, and the lower body of the fusion cage can be driven to rotate and expand relative to the upper body of the fusion cage by rotating the transmission screw in vivo after being implanted into intervertebral space, so that the fusion cage is fully contacted with the vertebral end plate, thereby reducing the requirement of operation on the size of wound;
2. the operation wound is small, the operation time is short in the implantation process, the upper fusion device body and the lower fusion device body are connected together through the transmission body and the transmission screw, the mutual positioning is accurate, and good initial stability can be provided after the operation.
3. The intervertebral fusion cage adjusts the position of the transmission body by screwing the transmission screw, and realizes the rotary spreading of the fusion cage in vivo by the linkage action of the transmission body which rotates and moves, the upper body of the fusion cage and the lower body of the fusion cage, thereby improving the efficiency of the operation and the stability of the fusion after the operation.
Drawings
The invention is further illustrated by the non-limiting examples given in the accompanying drawings;
FIG. 1 is a schematic view of a rotary distractor intervertebral cage according to an embodiment of the present invention;
FIG. 2 is a schematic view of an embodiment of a rotary distractor cage of the present invention prior to implantation;
FIG. 3 is a schematic view of an embodiment of a rotary distractor cage of the present invention shown after implantation of the cage;
FIG. 4 is a schematic structural view of a transmission body in an embodiment of the rotary distraction type interbody fusion cage of the present invention;
FIG. 5 is a schematic view of a rotating screw in an embodiment of the rotary distractor intervertebral cage of the present invention;
the main element symbols are as follows:
the fusion cage upper body 1, a first circular groove 101, a second circular groove 102, a threaded hole 11, a notch 110,
A lower body 2 of the fusion device, a first arc-shaped surface 201, a second arc-shaped surface 202,
The driving screw 4, the threaded rod 41, the hexagonal blind hole 410, the round rod 42, the clamping end 43 and the annular V-shaped groove 430.
Detailed Description
In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.
As shown in figures 1 to 5, the rotary distraction type interbody fusion cage of the invention comprises an upper fusion cage body 1, a lower fusion cage body 2, a transmission body 3 and a transmission screw 4, wherein the upper and lower end surfaces of the upper fusion cage body 1 and the lower fusion cage body 2 are respectively provided with a sawtooth structure, the upper fusion cage body 1 and the lower fusion cage body 2 are both Z-shaped, in figure 1, the top surface of the upper fusion cage body 1 and the bottom surface of the lower fusion cage body 2 are both Z-shaped, the middle part of the upper fusion cage body 1 close to the end surface of one end of the lower fusion cage body 2 is provided with a first circular groove 101, the middle part of the lower fusion cage body 2 close to the end surface of one end of the upper fusion cage body 1 is provided with a second circular groove 102, the upper fusion cage body 1 and the lower fusion cage body 2 are hinged in an X-shaped manner through the transmission body 3, so that the first circular groove 101 and the second circular groove 102 are combined to form a cavity for accommodating the transmission body 3 and the transmission, the upper body 1 of the fusion cage is rotatably connected with the upper end of the transmission body 3, a threaded hole 11 matched with the transmission screw 4 is formed in the upper body 1 of the fusion cage, and the free end of the transmission screw 4 is clamped on the transmission body 3.
The transmission body 3 comprises a circular shaft 31, a connecting column 30 and a connecting platform 33 which are integrally formed from top to bottom, and the diameter size of the connecting column 30 is larger than that of the circular shaft 31. The upper and lower fusion cage bodies 1 and 2 are supported by the connection posts 30 so that a space can be formed between the upper and lower fusion cage bodies 1 and 2 to accommodate the drive screws 4.
The upper body 1 of the fusion cage is provided with a shaft hole 310 matched with the circular shaft 31, the circular shaft 31 is in clearance fit with the shaft hole 310, the lower body 2 of the fusion cage is provided with a connecting hole 330 matched with the connecting platform 33, and the connecting platform 33 is in interference fit with the connecting hole 330. The transmission body 3 completes the rotatable connection with the upper fusion device body 1 and the fixed connection with the lower fusion device body 2 through the clearance fit between the circular shaft 31 and the shaft hole 310 and the interference fit between the connection table 33 and the connection hole 330.
The connecting table 33 is a hexagonal prism, and the connecting hole 330 is a hexagonal hole in interference fit with the connecting table 33. The fixed connection between the transmission body 3 and the fusion device lower body 2 is completed through the interference fit of the hexagonal prism connecting table 33 and the hexagonal hole, and the hexagonal prism connecting table 33 has higher circumferential rotation bearing capacity than the cylindrical connecting table 33.
The connecting column 30 is integrally formed with a transverse protruding block 32, a U-shaped clamping groove 320 is formed in the vertical direction of the central axis of the connecting column 30 at the free end of the transverse protruding block 32, the transmission screw 4 comprises an integrally formed threaded rod 41, a round rod 42 and a clamping end 43 matched with the U-shaped clamping groove 320, and the threaded rod 41 is in threaded connection with the threaded hole 11. The driving screw 4 is clamped in the U-shaped clamping groove 320 of the driving body 3 through the clamping end 43, and during installation, the clamping end 43 is directly clamped in from the free end of the U-shaped clamping groove 320, so that the structure is simple, and the installation is convenient.
The transverse projection 32 is arcuate. The adjustment range of the transmission body 3, that is, the opening and closing angle range between the upper fusion device body 1 and the lower fusion device body 2 can be increased.
The cross-section of the cross-wall of the U-shaped clamping groove 320 is V-shaped, the diameter of the clamping end 43 is larger than that of the round rod 42, and the outer wall of the clamping end 43 is provided with an annular V-shaped groove 430 matched with the U-shaped clamping groove 320. The U-shaped slot 320 with the V-shaped cross section is matched with the clamping end 43 provided with the annular V-shaped slot 430, so that the clamping end 43 is clamped in the U-shaped slot 320, and the fusion cage lower body 2 can rotate more smoothly when the transmission screw 4 rotates.
The free end of the threaded rod 41 is provided with a hexagonal blind hole 410. The threaded rod 41 can be rotated by a hexagonal wrench, so that the opening and closing angle between the upper fusion device body 1 and the lower fusion device body 2 can be adjusted, and the use is more convenient.
The end of the upper fusion device body 1 far away from the threaded hole 11 is a convex first arc-shaped surface 201, and the end of the lower fusion device body 2 corresponding to the first arc-shaped surface 201 is a convex second arc-shaped surface 202. Through the arrangement of the first arc-shaped surface 201 and the second arc-shaped surface 202, the intervertebral fusion device can be more conveniently implanted into an intervertebral space from an operation wound.
The fusion cage upper body 1 is provided with notches 110 on the upper and lower end surfaces of one end corresponding to the threaded hole 11. The instrument is convenient to hold and take.
In this embodiment, before use, the upper fusion device body 1, the lower fusion device body 2, the transmission body 3 and the transmission screw 4 are assembled together, and the upper fusion device body 1 and the lower fusion device body 2 are attached together by rotating the transmission screw 4 (as shown in fig. 2);
when the device is used, the interbody fusion cage is implanted into an intervertebral space from a wound of a patient, and then the transmission body 3 is driven to rotate by screwing the transmission screw 4, so that the lower fusion cage body 2 is driven to rotate relative to the upper fusion cage body 1 by taking the transmission body 3 as the center, and the opening and closing angle between the upper fusion cage body 1 and the lower fusion cage body 2 is adjusted.
The rotation expanding type intervertebral fusion device provided by the invention is described in detail above. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (6)
1. A rotary expanding type intervertebral fusion cage is characterized in that: comprises an upper fusion device body (1), a lower fusion device body (2), a transmission body (3) and a transmission screw (4), wherein the upper fusion device body (1) is provided with a first circular groove (101) close to the middle part of one end face of the lower fusion device body (2), the lower fusion device body (2) is provided with a second circular groove (102) close to the middle part of one end face of the upper fusion device body (1), the upper fusion device body (1) and the lower fusion device body (2) are hinged in an X shape through the transmission body (3), the first circular groove (101) and the second circular groove (102) are combined to form a cavity for accommodating the transmission body (3) and the transmission screw (4), the lower fusion device body (2) is fixedly connected with the lower end of the transmission body (3), the upper fusion device body (1) is rotatably connected with the upper end of the transmission body (3), the upper fusion device body (1) is provided with a threaded hole (11) matched with the transmission screw (4), the free end of the transmission screw (4) is clamped on the transmission body (3); the transmission body (3) comprises a circular shaft (31), a connecting column (30) and a connecting platform (33), and the diameter size of the connecting column (30) is larger than that of the circular shaft (31); the transmission screw is characterized in that a transverse lug (32) is integrally formed on the connecting column (30), a U-shaped clamping groove (320) is formed in the free end of the transverse lug (32) in the vertical direction of the central axis of the connecting column (30), the transmission screw (4) comprises a threaded rod (41), a round rod (42) and a clamping end (43) matched with the U-shaped clamping groove (320), and the threaded rod (41) is in threaded connection with the threaded hole (11); the transverse protruding block (32) is arc-shaped, the cross section of the transverse wall of the U-shaped clamping groove (320) is V-shaped, the diameter size of the clamping end (43) is larger than that of the round rod (42), and the outer wall of the clamping end (43) is provided with an annular V-shaped groove (430) matched with the U-shaped clamping groove (320).
2. A rotary distracting intersomatic cage according to claim 1, wherein: the fusion cage is characterized in that a shaft hole (310) matched with the circular shaft (31) is formed in the fusion cage upper body (1), the circular shaft (31) is in clearance fit with the shaft hole (310), a connecting hole (330) matched with the connecting platform (33) is formed in the fusion cage lower body (2), and the connecting platform (33) and the connecting hole (330) are in interference fit.
3. A rotary distracting intersomatic cage according to claim 2, wherein: the connecting table (33) is a hexagonal prism, and the connecting holes (330) are hexagonal holes in interference fit with the connecting table (33).
4. A rotary distracting intersomatic cage according to claim 1, wherein: one end of the upper fusion device body (1) far away from the threaded hole (11) is a convex first arc-shaped surface (201), and one end of the lower fusion device body (2) corresponding to the first arc-shaped surface (201) is a convex second arc-shaped surface (202).
5. A rotary distracting intersomatic cage according to claim 1, wherein: the upper end face and the lower end face of the upper fusion device body (1) and the lower fusion device body (2) are respectively provided with a sawtooth structure.
6. A rotary distracting intersomatic cage according to claim 1, wherein: the fusion cage upper body (1) is provided with notches (110) on the upper end surface and the lower end surface of one end corresponding to the threaded hole (11).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910630880.3A CN110368146B (en) | 2019-07-12 | 2019-07-12 | Rotary expanding type interbody fusion cage |
| PCT/CN2020/074762 WO2021008132A1 (en) | 2019-07-12 | 2020-02-11 | Rotary expansion type interbody fusion cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910630880.3A CN110368146B (en) | 2019-07-12 | 2019-07-12 | Rotary expanding type interbody fusion cage |
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| CN110368146A CN110368146A (en) | 2019-10-25 |
| CN110368146B true CN110368146B (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910630880.3A Active CN110368146B (en) | 2019-07-12 | 2019-07-12 | Rotary expanding type interbody fusion cage |
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| Country | Link |
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| CN (1) | CN110368146B (en) |
| WO (1) | WO2021008132A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110368146B (en) * | 2019-07-12 | 2020-07-31 | 浙江科惠医疗器械股份有限公司 | Rotary expanding type interbody fusion cage |
| CN112155703B (en) * | 2020-10-23 | 2022-09-02 | 江佩师 | Internal fixation device for axial fusion of lumbosacral vertebrae with built-in lock pins |
| TWI784572B (en) * | 2021-06-16 | 2022-11-21 | 兆峰生技股份有限公司 | Spinous process expanding and supporting device and method |
| CN113244027B (en) * | 2021-06-25 | 2021-09-24 | 珠海维尔康生物科技有限公司 | Minimally invasive fence type deformable fusion device used under endoscope |
| CN114403953B (en) * | 2021-12-29 | 2023-06-27 | 首都医科大学附属北京友谊医院 | UBE operation time multifunctional nerve protection apparatus |
| CN117204989A (en) * | 2023-11-08 | 2023-12-12 | 江苏爱护佳健康科技有限公司 | Lumbar interbody fusion cage with self-locking and fixing functions |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111205A (en) * | 2004-11-23 | 2008-01-23 | 布拉德利·J·格伦 | Minimally invasive spinal disc stabilizer and insertion tool |
| EP1925271A1 (en) * | 2006-11-22 | 2008-05-28 | Flexismed SA | Intervertebral implant |
| CN106037998A (en) * | 2016-07-05 | 2016-10-26 | 杨晋才 | Variable-angle interbody fusion device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070260314A1 (en) * | 2006-05-02 | 2007-11-08 | Ashok Biyani | Transforaminal lumbar interbody fusion cage |
| US8845733B2 (en) * | 2010-06-24 | 2014-09-30 | DePuy Synthes Products, LLC | Lateral spondylolisthesis reduction cage |
| CN204909741U (en) * | 2015-05-18 | 2015-12-30 | 无锡市人民医院 | Interbody fusion cage with elasticity |
| CN110368146B (en) * | 2019-07-12 | 2020-07-31 | 浙江科惠医疗器械股份有限公司 | Rotary expanding type interbody fusion cage |
-
2019
- 2019-07-12 CN CN201910630880.3A patent/CN110368146B/en active Active
-
2020
- 2020-02-11 WO PCT/CN2020/074762 patent/WO2021008132A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111205A (en) * | 2004-11-23 | 2008-01-23 | 布拉德利·J·格伦 | Minimally invasive spinal disc stabilizer and insertion tool |
| EP1925271A1 (en) * | 2006-11-22 | 2008-05-28 | Flexismed SA | Intervertebral implant |
| CN106037998A (en) * | 2016-07-05 | 2016-10-26 | 杨晋才 | Variable-angle interbody fusion device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021008132A1 (en) | 2021-01-21 |
| CN110368146A (en) | 2019-10-25 |
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Denomination of invention: A kind of rotatory braced interbody fusion cage Effective date of registration: 20221205 Granted publication date: 20200731 Pledgee: Industrial and Commercial Bank of China Limited Jinhua Branch Pledgor: CANWELL MEDICAL Co.,Ltd. Registration number: Y2022330003493 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231205 Granted publication date: 20200731 Pledgee: Industrial and Commercial Bank of China Limited Jinhua Branch Pledgor: CANWELL MEDICAL Co.,Ltd. Registration number: Y2022330003493 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A rotating brace type intervertebral fusion device Granted publication date: 20200731 Pledgee: Industrial and Commercial Bank of China Limited Jinhua Branch Pledgor: CANWELL MEDICAL Co.,Ltd. Registration number: Y2024980000673 |