CN111329629A - Expansion type interbody fusion cage applied to minimally invasive spine surgery - Google Patents

Expansion type interbody fusion cage applied to minimally invasive spine surgery Download PDF

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Publication number
CN111329629A
CN111329629A CN202010157212.6A CN202010157212A CN111329629A CN 111329629 A CN111329629 A CN 111329629A CN 202010157212 A CN202010157212 A CN 202010157212A CN 111329629 A CN111329629 A CN 111329629A
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CN
China
Prior art keywords
grooves
upper panel
lower panel
panel
fusion cage
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Granted
Application number
CN202010157212.6A
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Chinese (zh)
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CN111329629B (en
Inventor
彭伟
浦立妤
胡建中
吕红斌
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Xiangya Hospital of Central South University
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Xiangya Hospital of Central South University
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Priority to CN202010157212.6A priority Critical patent/CN111329629B/en
Publication of CN111329629A publication Critical patent/CN111329629A/en
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Publication of CN111329629B publication Critical patent/CN111329629B/en
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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
    • A61F2/447—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 substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
    • 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
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30579—Special structural features of bone or joint prostheses not otherwise provided for with mechanically expandable devices, e.g. fixation devices

Abstract

The embodiment of the invention discloses an expansion type interbody fusion cage applied to minimally invasive spine surgery, and particularly relates to the technical field of interbody fusion cages, which comprises an upper panel and a lower panel, wherein grooves are formed in the opposite surfaces of the upper panel and the lower panel, and nuts are fixedly arranged in the grooves; the outer surface of the upper panel and the outer surface of the lower panel are both provided with through grooves, the through grooves of the upper panel and the lower panel are both provided with sliding grooves along the inner side walls of the two sides along the radial direction, the two sliding grooves are uniformly provided with three circular grooves, the two sliding grooves are respectively fixedly provided with a rubber ring along the inner parts of the circular grooves at the two ends of the horizontal direction, and a disc is embedded in the rubber ring. The invention has higher interface stability, does not need to be fixed by adding more screws, simplifies the operation steps of the vertebral body fusion operation, is beneficial to the fusion of the vertebral bodies, does not damage the original structure of the vertebral body of a patient and has quicker recovery after the operation.

Description

Expansion type interbody fusion cage applied to minimally invasive spine surgery
Technical Field
The embodiment of the invention relates to the technical field of interbody fusion cages, in particular to an expansion type interbody fusion cage.
Background
With the aggravation of aging of population, spinal degenerative diseases with neck and shoulder pain and lumbocrural pain as main symptoms seriously affect the work and life of people, the vertebral body fusion operation between vertebral bodies is one of the main treatment modes for treating the spinal degenerative diseases at present, an intervertebral fusion cage can be used in the vertebral body fusion operation, and the intervertebral fusion cage can be divided into metal and nonmetal according to the raw materials of the fusion cage, wherein the metal mainly comprises a titanium mesh fusion cage and a nonmetal fusion cage of various types, and mainly comprises a biological fusion cage, a composite material fusion cage (such as carbon fiber and polyether ether ketone), an absorbable fusion cage and the like;
the fusion cage has the following conditions in the vertebral body fusion operation, has no toxic or side effect, better biocompatibility and proper biomechanical characteristics in a human body, and ensures the stability of intervertebral space and promotes bone fusion; after the artificial vertebral body is implanted into a human body, the artificial vertebral body has larger fusion area with end plates of upper and lower vertebral bodies, the artificial vertebral body is structurally closer to the normal physiological curvature of the human body, along with the continuous improvement of living conditions of people, the safety consciousness is gradually enhanced, and the fusion device capable of absorbing materials is gradually favored by people.
The prior art has the following defects: the structure contact area between the attached hole in the common cylindrical threaded fusion cage structure and the end plate is small, the stability of the self interface is poor, the intervertebral fusion is easy to fail and shift, and the success rate of the actual spine minimally invasive surgery is influenced.
Disclosure of Invention
Therefore, the embodiment of the invention provides an expansion type interbody fusion cage applied to spine minimally invasive surgery, which is characterized in that a vertical plate is arranged inside a circular groove on an upper panel through a side frame, a buffer groove and a spring, the vertical plate is arranged inside the circular groove, the buffer groove is arranged inside the vertical plate, the other end of the spring fixedly arranged inside the buffer groove is connected with the buffer groove on the vertical plate in the circular groove on a lower panel corresponding to the upper panel, so that the position between the lower panels corresponding to the upper panel is relatively fixed, structural uniformity between the upper panel and the lower panel can be ensured through the stretching of the spring in the buffer groove when the expansion block adjusts the distance between the upper panel and the lower panel, higher interface stability is achieved, more screws are not needed for fixation, the operation steps of the vertebral body fusion surgery are simplified, the fusion of vertebral bodies is facilitated, the original structure of the vertebral bodies of patients is not, the problems that the contact area of the structure between the attached hole and the end plate in the commonly used cylindrical threaded fusion device structure in the prior art is small, the stability of the self interface is poor, the intervertebral fusion is easy to fail and shift, and the success rate of the actual spine minimally invasive surgery is affected are solved.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions: the expansion type interbody fusion cage comprises an upper panel and a lower panel, wherein the upper panel and the lower panel are consistent in structure and are arranged oppositely, grooves are formed in the opposite surfaces of the upper panel and the lower panel, nuts are fixedly arranged in the grooves, expansion bolts are connected with the internal threads of the nuts, and expansion blocks are fixedly arranged at one ends, far away from the nuts, of the expansion bolts;
the outer surfaces of the upper panel and the lower panel are provided with through grooves, the through grooves of the upper panel and the lower panel are provided with sliding grooves along the inner side walls of the two sides along the radial direction, the two sliding grooves are uniformly provided with three circular grooves, the two sliding grooves are fixedly provided with rubber rings along the inner parts of the circular grooves at the two ends in the horizontal direction, a disc is embedded in the rubber rings, a convex block is fixedly arranged on the outer side wall of the disc, a vertical plate is sleeved on the outer surface of the convex block, a buffer groove is formed in the vertical plate, a spring is fixedly arranged in the buffer groove, and the other end of the spring is fixedly connected with the inner bottom wall of the buffer groove of the other vertical plate.
Furthermore, the deviating surfaces of the upper panel and the lower panel are fixedly provided with uniformly distributed anti-skidding teeth.
Further, the one end that upper panel and lower panel are close to the nut is equipped with the side frame, the through hole that suits with the nut is seted up to the lateral wall of side frame, and nut fixed mounting is in the through hole.
Furthermore, the upper panel and the lower panel are respectively and fixedly provided with two first threaded rods and two second threaded rods close to the outer side wall of one side of the side frame.
Furthermore, the outer surface of the side frame is provided with first threaded holes in positions corresponding to the first threaded rod and the second threaded rod respectively, and the first threaded rod and the second threaded rod are in threaded connection with the side frame through the first threaded holes respectively.
Further, the fixing piece is sleeved at one end, penetrating through the side frame, of the first threaded rod and the second threaded rod respectively, the structure of the fixing piece is cross-shaped, and a second threaded hole is formed in the outer surface of the fixing piece.
Furthermore, an embedding groove is formed in one end, close to the expansion bolt, of the expansion block, and a rubber gasket is fixedly arranged inside the embedding groove.
Furthermore, the expansion bolt is close to the fixed connector that is equipped with of one end of expansion block, and expansion bolt inlays the dress mutually with the expansion block through the connector.
The embodiment of the invention has the following advantages:
1. through the arranged side frame, the buffer groove and the spring, the vertical plate is arranged inside the circular groove on the upper panel, the buffer groove is formed inside the vertical plate, the other end of the spring fixedly arranged inside the buffer groove is connected with the buffer groove on the vertical plate in the circular groove on the lower panel corresponding to the upper panel, so that the position between the lower panels corresponding to the upper panel is relatively fixed, and the expansion block can ensure structural uniformity between the upper panel and the lower panel through the stretching of the spring in the buffer groove when adjusting the distance between the upper panel and the lower panel, so that the interface stability is higher, more screws are not required to be added for fixing, the operation steps of the vertebral body fusion operation are simplified, the vertebral body fusion is facilitated, the original structure of the patient's own vertebral body is not damaged, and the postoperative recovery is quicker;
2. through caulking groove and the connector that sets up, inlay the dress in the caulking groove that corresponds expansion block with expansion bolt's connector to guarantee both structural connection's stability through the rubber packing ring, but both structures split can select the suitable expansion block of area in order to guarantee between upper panel and the lower panel through the inflation back stable in structure according to the structure of upper panel and lower panel.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a front view provided in embodiment 1 of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 according to example 1 of the present invention;
fig. 3 is an enlarged view of a portion B in fig. 2 according to embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of a side frame provided in embodiment 1 of the present invention;
fig. 5 is a schematic structural diagram of a fixing member provided in embodiment 1 of the present invention;
fig. 6 is a perspective view of an expansion block provided in embodiment 1 of the present invention;
fig. 7 is a schematic structural view of an expansion bolt provided in embodiment 1 of the present invention;
in the figure: 1. an upper panel; 2. a lower panel; 3. a nut; 4. an expansion bolt; 5. an expansion block; 6. a chute; 7. a circular groove; 8. a rubber ring; 9. a disc; 10. a bump; 11. a vertical plate; 12. a buffer tank; 13. a spring; 14. a side frame; 15. a first threaded hole; 16. a first threaded rod; 17. a second threaded rod; 18. a fixing member; 19. a second threaded hole; 20. caulking grooves; 21. a rubber gasket; 22. a connector; 23. a through groove; 24. and (4) anti-slip teeth.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawings 1-5 in the specification, the expansion type interbody fusion cage applied to the minimally invasive spine surgery comprises an upper panel 1 and a lower panel 2, wherein the upper panel 1 and the lower panel 2 are consistent in structure and are oppositely arranged, grooves are formed in the opposite surfaces of the upper panel 1 and the lower panel 2, nuts 3 are fixedly arranged in the grooves, expansion bolts 4 are connected to the inner threads of the nuts 3, and expansion blocks 5 are fixedly arranged at the ends, far away from the nuts 3, of the expansion bolts 4;
the outer surfaces of the upper panel 1 and the lower panel 2 are both provided with through grooves 23, the through grooves 23 of the upper panel 1 and the lower panel 2 are both provided with sliding grooves 6 along the inner side walls of the two radial sides, the two sliding grooves 6 are uniformly provided with three circular grooves 7, the two sliding grooves 6 are respectively fixedly provided with rubber rings 8 along the insides of the circular grooves 7 at the two ends of the horizontal direction, the inside of each rubber ring 8 is embedded with a disc 9, the outer side wall of each disc 9 is fixedly provided with a bump 10, the outer surface of each bump 10 is sleeved with a vertical plate 11, the inside of each vertical plate 11 is provided with a buffer groove 12, the inside of each buffer groove 12 is fixedly provided with a spring 13, and the other end of each spring 13 is fixedly connected with the inner bottom wall of the buffer groove.
Furthermore, the deviating surfaces of the upper panel 1 and the lower panel 2 are fixedly provided with uniformly distributed anti-skidding teeth 24, so that the anti-skidding property of the interface is improved, and the fusion device is not easy to shift.
Further, the one end that upper panel 1 and lower panel 2 are close to nut 3 is equipped with side frame 14, the through hole that suits with nut 3 is seted up to the lateral wall of side frame 14, and nut 3 fixed mounting is in the through hole.
Further, two first threaded rods 16 and two second threaded rods 17 are fixedly arranged on the outer side walls of the upper panel 1 and the lower panel 2 close to the side frames 14 respectively.
Furthermore, the outer surface of the side frame 14 is respectively provided with a first threaded hole 15 at a position corresponding to the first threaded rod 16 and the second threaded rod 17, and the first threaded rod 16 and the second threaded rod 17 are respectively in threaded connection with the side frame 14 through the first threaded hole 15.
Further, a fixing piece 18 is sleeved at one end of each of the first threaded rod 16 and the second threaded rod 17 penetrating through the side frame 14, the fixing piece 18 is cross-shaped, and a second threaded hole 19 is formed in the outer surface of the fixing piece 18.
The implementation scenario is specifically as follows: when the invention is used, the upper panel 1 and the lower panel 2 are provided with structures specially manufactured according to the operation purpose, the structures are both provided with through grooves inside, when the bone blocks need to be implanted in the intervertebral 1 fusion operation, the stability of intervertebral space can be ensured, and the bone fusion can be promoted, two first threaded rods 16 and two second threaded rods 17 arranged on the outer surfaces of one ends of the upper panel 1 and the lower panel 2 are respectively inserted corresponding to first threaded holes and 15 arranged on the side frames 14, then, the second threaded holes 19 on the fixing pieces 18 are screwed corresponding to the first threaded rods 16 or the second threaded rods 17, so that the side frames 14 are installed with the upper panel 1 and the lower panel 2, then, the expansion blocks 5 are arranged in the gap between the upper panel 1 and the lower panel 2, then, the expansion bolts 4 in the screw caps 3 are screwed, the expansion bolts 4 rotate to enable the position of the expansion block 5 connected with one end to be pushed to the maximum diameter of the gap, the relative distance between the upper panel 1 and the lower panel 2 is expanded, three circular grooves 7 are uniformly distributed on a sliding chute 6 formed in the upper panel 1 and the lower panel 2, a vertical plate 11 is fixedly arranged on a disc 9 embedded in the circular groove 7 on the upper panel 1 through a convex block 10, a buffer groove 12 is formed in the vertical plate 11, the other end of a spring 13 fixedly arranged in the buffer groove 12 is connected with the buffer groove 12 on the vertical plate 11 in the circular groove 7 on the lower panel 2 corresponding to the upper panel 1, the position between the upper panel 1 and the lower panel 2 corresponding to the upper panel is relatively fixed, and when the distance between the two is adjusted by the expansion block 5, the structural uniformity between the two can be ensured through the stretching of the spring 13 in the buffer groove 12, the interface stability is higher, more screws are not required to be added for fixing, and the operation steps of the centrum fusion surgery are simplified, is beneficial to the fusion of the vertebral bodies, does not damage the original structure of the vertebral bodies of the patients and has quicker recovery after the operation.
Referring to the accompanying fig. 6-7 in the specification, in the embodiment of the expansion type interbody fusion cage for minimally invasive spine surgery, an insertion groove 20 is formed at one end of the expansion block 5 close to the expansion bolt 4, and a rubber washer 21 is fixedly arranged inside the insertion groove 20.
Furthermore, a connector 22 is fixedly arranged at one end of the expansion bolt 4 close to the expansion block 5, and the expansion bolt 4 is embedded with the expansion block 5 through the connector 22.
The implementation scenario is specifically as follows: the expansion bolt 4 is close to the fixed connector 22 that is equipped with of one end of expansion block 5, and during the use, inlay the dress in the caulking groove 20 that corresponds expansion block 5 with connector 22 of expansion bolt 4 to guarantee the stability of both structural connection through rubber packing 21, but both structures are split, can select the expansion block 5 that the area is suitable according to the structure of top panel 1 and lower panel 2 in order to guarantee between top panel 1 and the lower panel 2 through the stable in structure after the inflation.
The working principle is as follows:
referring to the attached drawings 1-5 of the specification, the installation of the side frame 14 and the upper panel 1 and the lower panel 2, then, the expansion bolt 4 in the nut 3 is screwed, the expansion bolt 4 rotates to push the position of the expansion block 5 connected with one end to the maximum diameter of the gap, so that the relative distance between the upper panel 1 and the lower panel 2 is expanded, the disc 9 embedded in the circular groove 7 on the upper panel 1 is fixedly provided with the vertical plate 11 through the convex block 10, the vertical plate 11 is internally provided with the buffer groove 12, and the other end of the spring 13 fixedly arranged in the buffer groove 12 is connected with the buffer groove 12 on the vertical plate 11 in the circular groove 7 on the lower panel 2 corresponding to the upper panel 1, so that the position between the upper panel 1 and the lower panel 2 is relatively fixed, and the expansion block 5 can ensure the structural uniformity by the stretching of the spring 13 in the buffer groove 12 when adjusting the distance between the two, the vertebral body fusion device has higher interface stability, does not need to be fixed by adding more screws, simplifies the operation steps of the vertebral body fusion operation, is favorable for the fusion of the vertebral body, does not damage the original structure of the vertebral body of a patient, and can be quickly recovered after the operation.
Referring to the attached figures 6-7 of the specification, the connector 22 of the expansion bolt 4 is embedded in the embedding groove 20 of the expansion block 5, the structural connection between the expansion bolt and the expansion block is stable through the rubber gasket 21, the structure between the expansion bolt and the expansion block can be separated, and the expansion block 5 with the proper area can be selected according to the structures of the upper panel 1 and the lower panel 2 to ensure the structural stability after expansion between the upper panel 1 and the lower panel 2.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (8)

1. The utility model provides an expand formula interbody fusion cage that applies to backbone minimal access surgery, includes top panel (1) and following panel (2), its characterized in that: the upper panel (1) and the lower panel (2) are consistent in structure and are arranged oppositely, grooves are formed in the opposite surfaces of the upper panel (1) and the lower panel (2), nuts (3) are fixedly arranged in the grooves, expansion bolts (4) are connected with the internal threads of the nuts (3), and expansion blocks (5) are fixedly arranged at one ends, far away from the nuts (3), of the expansion bolts (4);
the outer surfaces of the upper panel (1) and the lower panel (2) are both provided with through grooves (23), sliding grooves (6) are respectively arranged on the inner side walls of the two sides of the through groove (23) of the upper panel (1) and the lower panel (2) along the radial direction, three circular grooves (7) are respectively uniformly distributed on the two sliding grooves (6), rubber rings (8) are respectively fixedly arranged inside the circular grooves (7) at the two ends of the two sliding grooves (6) along the horizontal direction, a disc (9) is embedded in the rubber ring (8), a convex block (10) is fixedly arranged on the outer side wall of the disc (9), the outer surface of the convex block (10) is sleeved with a vertical plate (11), a buffer groove (12) is arranged inside the vertical plate (11), a spring (13) is fixedly arranged inside the buffer groove (12), and the other end of the spring (13) is fixedly connected with the inner bottom wall of the buffer groove (12) of the other vertical plate (11).
2. The expandable intervertebral fusion cage for minimally invasive spine surgery as claimed in claim 1, wherein: the deviating surfaces of the upper panel (1) and the lower panel (2) are fixedly provided with evenly distributed anti-skidding teeth (24).
3. The expandable intervertebral fusion cage for minimally invasive spine surgery as claimed in claim 1, wherein: one end of the upper panel (1) and one end of the lower panel (2) close to the nut (3) are provided with side frames (14), the outer side walls of the side frames (14) are provided with through holes matched with the nut (3), and the nut (3) is fixedly installed in the through holes.
4. The expandable intervertebral fusion cage for minimally invasive spine surgery as claimed in claim 3, wherein: the upper panel (1) and the lower panel (2) are respectively and fixedly provided with two first threaded rods (16) and two second threaded rods (17) close to the outer side wall of one side of the side frame (14).
5. The expandable intervertebral fusion cage for minimally invasive spine surgery as claimed in claim 3, wherein: first threaded holes (15) are formed in the positions, corresponding to the first threaded rods (16) and the second threaded rods (17), of the outer surfaces of the side frames (14), and the first threaded rods (16) and the second threaded rods (17) are in threaded connection with the side frames (14) through the first threaded holes (15) respectively.
6. The expandable intervertebral fusion cage for minimally invasive spine surgery as claimed in claim 4, wherein: the fixing piece (18) is sleeved at one end of the first threaded rod (16) and one end of the second threaded rod (17) penetrating through the side frame (14), the fixing piece (18) is in a cross shape, and a second threaded hole (19) is formed in the outer surface of the fixing piece (18).
7. The expandable intervertebral fusion cage for minimally invasive spine surgery as claimed in claim 1, wherein: one end of the expansion block (5) close to the expansion bolt (4) is provided with a caulking groove (20), and a rubber gasket (21) is fixedly arranged inside the caulking groove (20).
8. The expandable intervertebral fusion cage for minimally invasive spine surgery as claimed in claim 1, wherein: one end of the expansion bolt (4) close to the expansion block (5) is fixedly provided with a connector (22), and the expansion bolt (4) is embedded with the expansion block (5) through the connector (22).
CN202010157212.6A 2020-03-09 2020-03-09 Expansion type interbody fusion cage applied to minimally invasive spine surgery Active CN111329629B (en)

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CN111329629B CN111329629B (en) 2022-03-01

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103876865A (en) * 2014-02-21 2014-06-25 吉林医药学院 Expandable interbody fusion cage
CN204971722U (en) * 2015-09-28 2016-01-20 浙江科惠医疗器械股份有限公司 Expandable backbone fuses ware
US20170216045A1 (en) * 2016-01-28 2017-08-03 Warsaw Orthopedic, Inc Geared cam expandable interbody implant and method of implanting same
CN107106305A (en) * 2014-11-04 2017-08-29 华沙整形外科股份有限公司 Implant between expandable centrum
CN107438417A (en) * 2014-12-30 2017-12-05 Ex技术有限责任公司 Extensible Invasive lumbar fusion device
US20190274837A1 (en) * 2018-03-06 2019-09-12 Eit Emerging Implant Technologies Gmbh Intervertebral Cages With Integrated Expansion And Angular Adjustment Mechanism

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103876865A (en) * 2014-02-21 2014-06-25 吉林医药学院 Expandable interbody fusion cage
CN107106305A (en) * 2014-11-04 2017-08-29 华沙整形外科股份有限公司 Implant between expandable centrum
CN107438417A (en) * 2014-12-30 2017-12-05 Ex技术有限责任公司 Extensible Invasive lumbar fusion device
CN204971722U (en) * 2015-09-28 2016-01-20 浙江科惠医疗器械股份有限公司 Expandable backbone fuses ware
US20170216045A1 (en) * 2016-01-28 2017-08-03 Warsaw Orthopedic, Inc Geared cam expandable interbody implant and method of implanting same
US20190274837A1 (en) * 2018-03-06 2019-09-12 Eit Emerging Implant Technologies Gmbh Intervertebral Cages With Integrated Expansion And Angular Adjustment Mechanism

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