CN112353528A - Side entry way fusion cage with integrally fixed adjustable height - Google Patents
Side entry way fusion cage with integrally fixed adjustable height Download PDFInfo
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- CN112353528A CN112353528A CN202011126449.4A CN202011126449A CN112353528A CN 112353528 A CN112353528 A CN 112353528A CN 202011126449 A CN202011126449 A CN 202011126449A CN 112353528 A CN112353528 A CN 112353528A
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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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Abstract
The invention discloses a side access fusion cage with integrally fixed and adjustable height, which comprises a fixed seat, a screw rod, a movable block, a framework, an upper supporting plate, an upper height adjusting structure, a lower supporting plate, a lower height adjusting structure, an upper bone screw, a lower bone screw and an elastic reset mechanism. The invention is suitable for the spinal fusion operation of the lateral approach.
Description
Technical Field
The invention relates to the field of medical operations, in particular to an integrally fixed height-adjustable lateral approach fusion cage.
Background
Spinal related diseases have become important diseases affecting the quality and level of life of people. Generally, when the disease is serious or the conservative treatment is ineffective, the clinician adopts the mode of intervertebral fusion device bone grafting fusion after discectomy to carry out the operation treatment, and the clinical curative effect is relatively ideal. In the spinal fusion operation, there are various operation access ways according to the state of illness of a patient, and the access way of the lateral access implantation is simpler. The side approach mode needs to adopt a special fusion cage, and the fusion cage has the function of adjusting the height of the fusion cage after being implanted, namely the fusion cage is implanted into the intervertebral space on the operation and then is expanded in height, so that the fusion cage can be tightly contacted with the end plates of the upper and lower vertebral bodies, the bone grafting fusion rate is improved, and the complication caused by excessively pulling muscles, nerves and ligaments in the operation to expand the intervertebral space is avoided.
However, in order to realize height adjustability, the existing side access fusion cage has a relatively complex structure, many fine components and difficult manufacturing, and is often manufactured by 3D printing and additive manufacturing, which results in high cost. In addition, the height adjustable structure is realized by matching a screw with a pinion and a small connecting rod, so that the structure is lack of stability and is not firmly combined with a vertebral body.
Disclosure of Invention
The invention aims to provide a side access fusion cage with integrally fixed and adjustable height, which is used for solving one or more technical problems in the prior art and at least provides a beneficial selection or creation condition.
The technical scheme adopted for solving the technical problems is as follows:
an integrated fixed adjustable height lateral access fusion cage comprising:
a fixed seat provided with a screw rod through hole;
the screw rod is sequentially provided with a screw rod head, a smooth section and a screw rod section from back to front, the screw rod section penetrates through the screw rod through hole and then extends out, the smooth section is positioned in the screw rod through hole, the smooth section is connected with the screw rod through hole through a limiting structure, so that the screw rod can rotate in the screw rod through hole and cannot move back and forth, an X axis, a Y axis and a Z axis in a space three-dimensional orthogonal coordinate system are defined by taking the screw rod head as an original point, a central axis of the screw rod is superposed with the X axis, the screw rod section is positioned in the positive direction of the X axis, and the Z axis is in the opposite vertical direction;
the moving block is provided with a threaded hole, and the threaded section is in threaded fit with the threaded hole;
the framework is provided with a working cavity, the fixed seat is used as the cavity wall at the rear part of the working cavity, the moving block is positioned in the working cavity, the framework is provided with a guide pair extending along the X axis, and the moving block is connected with the guide pair and limited by the guide pair in the Z axis direction;
the upper support plate is arranged in the Z-axis positive direction of the framework and connected with the framework through an upper guide structure, the upper guide structure limits the freedom degree of the upper support plate in the X-axis direction and the Y-axis direction relative to the framework, the upper surface of the upper support plate is provided with upper latch teeth, the rear end of the upper support plate is provided with upper lugs, and the upper lugs are provided with upper bone screw counter bores;
an upper height adjustment structure, comprising: an upper skylight arranged at the upper part of the framework; the first push block is positioned at the upper part of the moving block; a second push block; the upper supporting plate is positioned on the downward surface of the upper supporting plate; the first push block and the second push block are mutually abutted in the upper skylight, abutting surfaces of the first push block and the second push block are a first inclined surface pair, an included angle formed by the intersection of an inclined surface in the first inclined surface pair and an XY plane is an acute angle, and the intersection line is parallel to a Y axis;
the lower supporting plate is arranged in the Z-axis negative direction of the framework and connected with the framework through a lower guiding structure, the lower guiding structure limits the degree of freedom of the lower supporting plate in the X-axis direction and the Y-axis direction relative to the framework, the lower surface of the lower supporting plate is provided with a lower latch, the rear end of the lower supporting plate is provided with a lower lug, and the lower lug is provided with a lower bone screw countersunk hole;
a lower height adjustment structure, comprising: the lower skylight is arranged at the lower part of the framework; the third push block is positioned at the lower part of the moving block; a fourth push block; the lower support plate is positioned on the upward surface of the lower support plate; the third push block and the fourth push block are abutted to each other in the lower skylight, abutting surfaces of the third push block and the fourth push block are a second inclined surface pair, an included angle formed by the intersection of an inclined surface in the second inclined surface pair and an XY plane is an acute angle, the intersection line is parallel to a Y axis, and the inclined directions of the second inclined surface pair and the first inclined surface pair are opposite and the included angles are the same;
an upper bone screw passing through the upper bone screw counterbore;
a lower bone screw passing through the lower bone screw counter bore;
elastic reset mechanism, it will go up the backup pad and be connected with the skeleton, and will the bottom suspension fagging is connected with the skeleton, elastic reset mechanism maintains the lower surface of going up the backup pad and the laminating trend on the upper portion of skeleton the upper surface of bottom suspension fagging and the laminating trend of the lower part of skeleton.
When in operation, the auxiliary tool is used for holding the invention, the auxiliary tool stabilizes the framework and rotates the screw head from the side of the operation wound to the rest position after the discectomy, when the screw rotates, the moving block matched with the screw thread section of the screw translates along the X axis due to the limit of the guide pair, during the moving process, the first push block pushes the second push block to move, and the upper support plate can only move along the positive direction of the Z axis because the upper support plate is limited by the upper guide structure; meanwhile, the third pushing block pushes the fourth pushing block to move, and the lower supporting plate can only move along the negative direction of the Z axis in the same way, so that the height of the fusion cage is increased until the upper surface and the lower surface respectively reach the end surfaces of the upper bone tissue and the lower bone tissue; when the implantation depth needs to be adjusted finely, the screw rod can be rotated reversely, the push blocks of the upper and lower height adjusting structures are loosened, and the elastic resetting mechanism enables the upper supporting plate and the lower supporting plate to be folded towards the direction of the framework respectively, so that the height of the fusion cage is narrowed, and the rest positions after the intervertebral disc is removed have enough space for the fusion cage to adjust the position again; the upper latch and the lower latch provide better biting force with bone tissues for the fusion cage; the upper bone screw penetrates through the upper bone screw countersunk hole and then drills into the upper vertebra, and the lower bone screw penetrates through the lower bone screw countersunk hole and then drills into the lower vertebra, so that the invention can be matched with an external spine anterior steel plate or a posterior nail plate system to realize the integral fixation of the invention. Compared with the traditional lateral approach fusion device, the lateral approach fusion device is simpler in structure and more convenient and sensitive to adjust.
It should be noted that the XYZ coordinate system described above is a virtual feature, which is provided only for convenience of describing the relative positional relationship of the components, and does not conflict with the relative directions of up, down, left, right, front, and back, and is commonly used for describing and understanding the present invention.
In some embodiments, the stop structure comprises: the smooth section is provided with an annular groove coaxial with the screw rod, a step section embedded into the annular groove is arranged in the screw rod through hole, and the length of the step section is matched with that of the annular groove. By the stage of the table being assembled with the annular groove, the screw is limited in axial movement and can only rotate in place, providing torque transfer for the latter mechanism.
In some embodiments, the guiding pair includes a guiding groove provided on the frame, the guiding groove extends along the X-axis direction, and a side surface of the moving block is provided with a side wing plate inserted into the guiding groove. The lateral wing plates are limited by the guide grooves, so that the moving block cannot rotate along with the rotation of the screw rod, correspondingly, the moving block can only translate along the guide grooves, the first push block and the third push block can move in the X direction, and the upper support plate and the lower support plate can be unfolded.
In some embodiments, the two guide grooves are respectively arranged on the left cavity wall and the right cavity wall of the working cavity; the side wing plates are also provided with two side wing plates which are respectively arranged at the left side and the right side of the moving block and are inserted into the corresponding guide grooves. The guide grooves and the side wing plates are positioned on two sides, so that the moving block can move more stably.
In some embodiments, the upper guide structure comprises: a guide hole penetrating through an upper portion of the frame from top to bottom; a guide post extending downward from a lower surface of the upper support plate, the guide post passing through the guide hole; the size of the backstop buckle is larger than the aperture of the guide hole, and the backstop buckle is positioned in the working cavity and connected with the lowest end of the guide pillar. The anti-back buckle limits the lifting stroke of the upper supporting plate, so that the upper supporting plate cannot be separated from the connection relation with the framework, and the whole body of the invention cannot be loosened no matter the invention is carried or transported or is implanted in an operation, more postures can be adopted, and the invention is more convenient and reliable.
In some embodiments, the first push block is provided with a first surface which is integrally inclined, the second push block is also provided with a second surface which is parallel to the first surface, and the first surface and the second surface are abutted to form the first bevel pair. The contact between the surfaces enables the moving block to have certain offset fault tolerance in the Y direction, the bearing surface is larger, and the structure is safer and more reliable.
In some embodiments, the upper height adjusting structure is integrally located in the middle of the integrated fixed height-adjustable lateral access fusion cage on the X axis, the upper guiding structure is located in front of the upper height adjusting structure, the lower surface of the rear end of the upper supporting plate is provided with a stabilizing rod parallel to the guide post, and the upper surface of the rear end of the framework is provided with a stabilizing hole for the stabilizing rod to be inserted into and lift up and down in. The cooperation of stabilizer bar and stabilizer hole is for making the backup pad goes up and down steadily, and goes up guiding mechanism and locate the place ahead of going up the altitude mixture control structure for stabilizer bar/hole, go up the altitude mixture control structure, go up guiding mechanism three and form triangle stable structure on the facade, go up and down steadily, the strength will homogenize to the first inclined plane of high altitude mixture control structure on vice when bearing the load to and divide to threaded connection pair, can effectively avoid going up the damage of guiding mechanism, stabilizer bar/hole.
In some embodiments, the third pushing block is provided with a third surface which is inclined integrally, the fourth pushing block is also provided with a fourth surface which is parallel to the third surface, and the third surface and the fourth surface are abutted to form the second bevel pair. The contact between the surfaces enables the moving block to have certain offset fault tolerance in the Y direction, the bearing surface is larger, the structure is safer and more reliable, and the stress is uniform corresponding to the first inclined surface pair on the upper part.
In some embodiments, the lower guide structure is integrally mirror-symmetrical to the upper guide structure with the XY plane as a plane of symmetry. The structure has stronger integrity, wide universality and easy production, and various beneficial effects of the upper guide structure can be embodied and maintained in the lower guide structure.
In some embodiments, the elastic reset mechanism comprises an upper spring plate and a lower spring plate, the lower end of the upper spring plate is fixedly connected with the framework, the upper support plate is provided with an upper channel, the inlet of the upper channel is positioned at the lower part of the upper support plate, the upper spring plate is inserted into the upper channel from the inlet, the whole upper channel extends along the positive direction of the X axis and the positive direction of the Z axis, and the length of the upper channel is greater than that of the upper spring plate; the lower support plate is provided with a lower channel; and the shape and structure of the lower spring piece and the lower channel are respectively in mirror symmetry with the upper spring piece and the upper channel by taking an XY plane as a symmetry plane. The upper spring piece and the lower spring piece maintain the trend that the upper supporting plate and the lower supporting plate are folded inwards in the simplest mode, the fitting relation between the first surface and the second surface and the fitting relation between the third surface and the fourth surface are kept, the lengths of the upper channel and the lower channel ensure that the upper spring piece and the lower spring piece can stretch in the respective channels, and therefore the up-down moving positions of the upper supporting plate and the lower supporting plate are not limited by the connection of the upper spring piece and the lower spring piece.
Drawings
The invention is further described with reference to the accompanying drawings and examples;
FIG. 1 is a schematic view of the overall structure of one embodiment of the present invention, wherein the upper support plate and the lower support plate are in a closed state;
FIG. 2 is a schematic view of the overall structure of one embodiment of the present invention, wherein the upper support plate and the lower support plate are in an expanded state;
fig. 3 is a schematic view of the present invention taken along the XZ plane, with the upper and lower bone screws hidden.
100. The device comprises a fixed seat, 200, a screw rod, 201, a screw rod head, 202, a threaded section, 203, an annular groove, 300, a moving block, 301, a first push block, 302, a second push block, 303, a third push block, 304, a fourth push block, 305, a side wing plate, 400, a framework, 401, a guide groove, 500, an upper supporting plate, 501, an upper latch, 503, a guide pillar, 504, a backstop buckle, 505, a stabilizer bar, 506, an upper lug, 600, a lower supporting plate, 601, a lower latch, 606, a lower lug, 700, an upper bone screw, 800, a lower bone screw, 901, an upper spring piece, 902 and a lower spring piece.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if words such as "a plurality" are described, the meaning is one or more, the meaning of a plurality is two or more, more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 3, the present invention includes a frame 400 having upper and lower plates arranged in parallel up and down with each other, rear ends of the upper and lower plates being connected by a holder 100, and front ends of the upper and lower plates gradually approaching and finally being furled into an arc shape, so that the frame 400 is finally formed in a bullet shape, which facilitates an insertion operation during a surgical procedure. The vacant site between the upper plate and the lower plate is used as the working cavity, and a relatively large cavity is formed on the upper plate and is used as an upper skylight. The fixing seat 100 is provided with a through hole as a screw rod through hole, after the screw rod 200 passes through the screw rod through hole, the whole tail part of the screw rod 200 is positioned in the working cavity, a step is arranged in the middle of the screw rod through hole, one end, close to the head part, of the screw rod 200 is provided with an annular groove 203, and the step is embedded into the annular groove 203 to limit the screw rod 200. In some embodiments, the step section may be a ring or a partial protrusion. Two long guide grooves 401 extending along the X axis are respectively formed in the left side surface and the right side surface of the upper skylight, a threaded hole is formed in the middle of the moving block 300 and is connected with the threaded section 202 of the screw rod 200 in a screwing mode, and side wing plates 305 are arranged on the left side and the right side of the moving block 300 and are respectively matched with the guide grooves 401 on the two sides in an inserting mode, so that when the screw rod 200 rotates, the moving block 300 can only move back and forth along the X axis. A first push block 301 is arranged on the upper surface of the moving block 300, and the upper part of the first push block 301 is basically an inclined plane; an upper supporting plate 500 is arranged above the framework 400, a second push block 302 is arranged on the lower surface of the upper supporting plate 500, the lower part of the second push block 302 is basically an inclined surface, and the inclined surface of the lower part of the second push block 302 is matched with the inclined surface of the upper part of the first push block 301, so that the second push block 302 can be extruded when the first push block 301 translates along the X axis; the rear end of the upper support plate 500 is provided with a stabilizer bar 505, the upper part of the rear end of the framework 400 or the fixed seat 100 is provided with a stabilizer hole, the stabilizer bar 505 is inserted into the stabilizer hole, and the stabilizer bar and the stabilizer hole are respectively provided with a pair and are arranged on the left side and the right side, so that the upper support plate 500 can only vertically lift, and when the first push block 301 extrudes the second push block 302, the upper support plate 500 rises upwards; a guide post 503 is downwardly arranged at the front end of the upper support plate 500, a through guide hole is arranged at the corresponding position of the upper plate, and a check buckle 504 is connected after the guide post 503 passes through the guide hole, so that the guide post 503 cannot be separated from the guide hole, and the lifting stroke of the upper support plate 500 is limited. An upper spring sheet 901 is arranged between the upper support plate 500 and the framework 400, and the elastic deformation trend of the upper spring sheet 901 enables the upper support plate 500 to descend until the upper support plate is reset when the first push block 301 does not accumulate the second push block 302 any more after the screw rod 200 rotates reversely and the moving block 300 moves reversely and horizontally. In practice, the fixing seat and the framework can be the same whole body or formed and combined in a split mode, so that the thread through hole can be formed in the fixing seat or designed to be formed in the rear end of the framework, and the fixing seat is used as a part of the framework.
The lower components of the cage, including the lower support plate 600 and the corresponding spacing, guiding, etc., may all correspond to the corresponding components of the upper support plate 500 in a mirror image. In addition, the countersunk hole of the upper bone screw is a hemispherical hole, and the head of the upper bone screw is also hemispherical, so that the driving angles of the upper bone screw and the vertebra can be changed according to different requirements. The framework, the upper supporting plate, the lower supporting plate, the moving block and other parts can be manufactured by connecting traditional splicing and inserting split bodies and threaded parts or by adopting a 3D printing mode.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention as set forth in the claims appended hereto.
Claims (10)
1. The utility model provides a side of fixed adjustable height of an organic whole way of joining in marriage ware which characterized in that: the method comprises the following steps:
a fixed seat (100) provided with a screw rod through hole;
the screw rod (200) is sequentially provided with a screw rod head (201), a smooth section and a screw rod section (202) from back to front, the screw rod section (202) penetrates through the screw rod through hole and then extends out, the smooth section is located in the screw rod through hole, the smooth section is connected with the screw rod through hole through a limiting structure, so that the screw rod (200) can rotate in the screw rod through hole and cannot move back and forth, an X axis, a Y axis and a Z axis in a space three-dimensional orthogonal coordinate system are defined by taking the screw rod head (201) as an origin, a central axis of the screw rod (200) is superposed with the X axis, the screw rod section (202) is located in the positive direction of the X axis, and the Z axis is in the opposite vertical direction;
a moving block (300) provided with a threaded hole, wherein the threaded section is in threaded fit with the threaded hole;
the moving block (300) is positioned in the working cavity, the framework (400) is provided with a guide pair extending along an X axis, and the moving block (300) is connected with the guide pair and limited by the guide pair in a Z axis direction;
the upper supporting plate (500) is arranged in the Z-axis positive direction of the framework (400) and connected with the framework (400) through an upper guiding structure, the upper guiding structure limits the freedom degree of the upper supporting plate (500) relative to the framework (400) in the X-axis direction and the Y-axis direction, the upper surface of the upper supporting plate (500) is provided with upper latch teeth (501), the rear end of the upper supporting plate (500) is provided with upper lugs (506), and the upper lugs (506) are provided with upper bone screw countersunk holes;
an upper height adjustment structure, comprising:
an upper louver provided on the upper portion of the frame (400);
a first push block (301) located at an upper portion of the moving block (300);
a second push block (302); the upper supporting plate is positioned on the downward surface of the upper supporting plate (500);
the first push block (301) and the second push block (302) are abutted to each other in the upper skylight, abutting surfaces of the first push block (301) and the second push block (302) are a first inclined surface pair, an included angle formed by intersection of an inclined surface in the first inclined surface pair and an XY plane is an acute angle, and the intersection line is parallel to a Y axis;
the lower supporting plate (600) is arranged in the Z-axis negative direction of the framework (400) and connected with the framework (400) through a lower guiding structure, the lower guiding structure limits the freedom degree of the lower supporting plate (600) relative to the framework (400) in the X-axis direction and the Y-axis direction, the lower surface of the lower supporting plate (600) is provided with a lower clamping tooth (601), the rear end of the lower supporting plate (600) is provided with a lower lug (606), and the lower lug (606) is provided with a lower bone screw countersunk hole;
a lower height adjustment structure, comprising:
a lower skylight disposed at the lower part of the framework (400);
a third push block (303) located at a lower portion of the moving block (300);
a fourth push block (304); the lower supporting plate is positioned on the upward side of the lower supporting plate (600);
the third pushing block (303) and the fourth pushing block (304) are abutted to each other in the lower skylight, abutting surfaces of the third pushing block (303) and the fourth pushing block (304) are a second inclined surface pair, an included angle formed by intersection of an inclined surface in the second inclined surface pair and an XY plane is an acute angle, an intersection line is parallel to a Y axis, and the second inclined surface pair and the first inclined surface pair are opposite in inclination direction and the included angles are the same in size;
an upper bone screw (700) passing through the upper bone screw counterbore;
a lower bone screw (800) passing through the lower bone screw counter bore;
elastic reset mechanism, it will go up backup pad (500) and be connected with skeleton (400), and will bottom suspension fagging (600) are connected with skeleton (400), elastic reset mechanism maintains the lower surface of going up backup pad (500) and the laminating trend on the upper portion of skeleton (400) the laminating trend of the upper surface of bottom suspension fagging (600) and the lower part of skeleton (400).
2. The integrally fixed adjustable height side access cage of claim 1, wherein: the limit structure comprises:
the smooth section is provided with an annular groove (203) coaxial with the screw (200), and a table stage embedded into the annular groove (203) is arranged in the screw passing hole, and the length of the table stage is matched with that of the annular groove (203).
3. The integrally fixed adjustable height side access cage of claim 1, wherein: the guide pair comprises a guide groove (401) arranged on the framework (400), the guide groove (401) extends along the X-axis direction, and a side wing plate (305) inserted into the guide groove (401) is arranged on the side surface of the moving block (300).
4. The integrally fixed adjustable height side access cage of claim 3, wherein: the two guide grooves (401) are respectively arranged on the left cavity wall and the right cavity wall of the working cavity; the two side wings (305) are respectively arranged at the left side and the right side of the moving block (300) and are inserted into the corresponding guide grooves (401).
5. The integrally fixed adjustable height side access cage of claim 1, wherein: the upper guide structure includes:
a guide hole penetrating through an upper portion of the frame (400) from top to bottom;
a guide post (503) extending downward from a lower surface of the upper support plate (500), the guide post (503) passing through the guide hole;
the size of the anti-back-off buckle (504) is larger than the aperture of the guide hole, and the anti-back-off buckle (504) is positioned in the working cavity and is connected with the lowest end of the guide post (503).
6. The integrally fixed adjustable height side access cage of claim 5, wherein: the first push block (301) is provided with a first surface which is inclined integrally, the second push block (302) is also provided with a second surface which is parallel to the first surface, and the first surface and the second surface are abutted to form the first inclined surface pair.
7. The integrally fixed adjustable height side access cage of claim 6, wherein: the upper height adjusting structure is integrally positioned in the middle of the integrally fixed height-adjustable lateral approach fusion device on the X axis, the upper guiding structure is positioned in front of the upper height adjusting structure, the lower surface of the rear end of the upper supporting plate (500) is provided with a stabilizing rod (505) parallel to the guide post (503), and the upper surface of the rear end of the framework (400) is provided with a stabilizing hole for the stabilizing rod (505) to be inserted and to ascend and descend vertically therein.
8. The integrally fixed adjustable height side access cage of claim 6, wherein: the third pushing block (303) is provided with a third surface which is inclined integrally, the fourth pushing block (304) is also provided with a fourth surface which is parallel to the third surface, and the third surface and the fourth surface are abutted to form the second inclined surface pair.
9. The integrally fixed adjustable height side access cage of claim 5, wherein: and the lower guide structure and the upper guide structure are integrally mirror-symmetrical by taking an XY plane as a symmetrical plane.
10. The integrally fixed adjustable height side access cage of claim 1, wherein: the elastic reset mechanism comprises an upper spring piece (901) and a lower spring piece (902), the lower end of the upper spring piece (901) is fixedly connected with the framework (400), an upper channel is arranged on the upper supporting plate (500), the inlet of the upper channel is positioned at the lower part of the upper supporting plate (500), the upper spring piece (901) is inserted into the upper channel from the inlet, the upper channel integrally extends along the positive direction of an X axis and the positive direction of a Z axis, and the length of the upper channel is greater than that of the upper spring piece (901); the lower supporting plate (600) is provided with a lower channel; the shape and structure of the lower spring piece (902) and the lower channel are respectively in mirror symmetry with the upper spring piece (901) and the upper channel by taking an XY plane as a symmetry plane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011126449.4A CN112353528B (en) | 2020-10-20 | 2020-10-20 | Side access fusion cage with integrally fixed adjustable height |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011126449.4A CN112353528B (en) | 2020-10-20 | 2020-10-20 | Side access fusion cage with integrally fixed adjustable height |
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| CN112353528A true CN112353528A (en) | 2021-02-12 |
| CN112353528B CN112353528B (en) | 2022-05-24 |
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| KR102147077B1 (en) * | 2019-10-07 | 2020-08-24 | (주)엘앤케이바이오메드 | Expandable Spinal Fusion Cage |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20200078190A1 (en) * | 2013-08-29 | 2020-03-12 | Spineex, Inc. | Expandable and adjustable lordosis interbody fusion system |
| US20180147066A1 (en) * | 2016-11-29 | 2018-05-31 | Amendia, Inc. | Intervertebral implant device with independent distal-proximal expansion |
| CN107126301A (en) * | 2017-06-14 | 2017-09-05 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | A kind of Invasive lumbar fusion device for side approach surgical treatment lumbar spondyloiisthesis |
| EP3470022A1 (en) * | 2017-10-11 | 2019-04-17 | Globus Medical, Inc. | Intervertebral spacer and inserter |
| KR102147077B1 (en) * | 2019-10-07 | 2020-08-24 | (주)엘앤케이바이오메드 | Expandable Spinal Fusion Cage |
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