CN110974492B - Under-mirror reset type lumbar spondylolisthesis interbody fusion cage - Google Patents
Under-mirror reset type lumbar spondylolisthesis interbody fusion cage Download PDFInfo
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- CN110974492B CN110974492B CN201911038942.8A CN201911038942A CN110974492B CN 110974492 B CN110974492 B CN 110974492B CN 201911038942 A CN201911038942 A CN 201911038942A CN 110974492 B CN110974492 B CN 110974492B
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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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- 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
Abstract
The invention relates to the technical field of medical treatment equipment, in particular to an under-mirror reset type lumbar spondylolisthesis interbody fusion cage which comprises a fusion device and a holding device, wherein the fusion device is in threaded connection with the holding device. The invention provides an under-mirror reset type lumbar spondylolisthesis interbody fusion cage which is convenient to use, small in combined height, convenient to pass through a narrow working channel, capable of increasing the combined height of intervertebral space to achieve the purpose of expanding and maintaining the height of the intervertebral space, capable of preventing a fusion cage from withdrawing, reliable in fixation and convenient to disassemble and assemble, and used for overcoming the defects in the prior art.
Description
Technical Field
The invention relates to the technical field of medical treatment equipment, in particular to an under-mirror reset type lumbar spondylolisthesis interbody fusion cage.
Background
With the development of society, as people work for a long time, the spine of the human body can be affected by scoliosis, degenerative disc disease, disc herniation, osteoporosis, spondylolisthesis and other diseases, so that the spine is deformed, painful, damaged by nerves and partially or completely loses mobility.
In recent years, with the rapid development of clinical medicine, biomechanics and materials, in order to treat diseases of people, a therapist adopts a way of posterior lumbar interbody fusion and the like to treat patients, and a fusion cage is a necessary device required by treatment, but a novel fusion cage is continuously developed, and a carbon fiber polyether ether ketone and absorbable material interbody fusion cage and the like appear by taking materials as an example; for example, rectangular, bullet-shaped, anatomical interbody fusion cages have appeared, but many lumbar interbody fusion cages are designed based on open surgery and are not suitable for minimally invasive surgery.
Therefore, produce a convenient to use, the combination height is little, is convenient for through narrow and small working channel, can highly increase after the intervertebral space combination, reaches and struts and maintain the purpose of intervertebral space height, prevents simultaneously that the fusion cage from withdrawing from, and is fixed reliable, the mirror of the dismouting of being convenient for formula of resetting lumbar vertebrae slippage interbody fusion cage has extensive market prospect.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the under-mirror reset type lumbar spondylolisthesis interbody fusion cage which is convenient to use, small in combination height, convenient to pass through a narrow working channel, capable of increasing the height after the intervertebral space is combined, achieving the purpose of expanding and maintaining the intervertebral space height, simultaneously preventing the fusion cage from withdrawing, reliable in fixation and convenient to disassemble and assemble, and is used for overcoming the defects in the prior art.
The technical scheme adopted by the invention is as follows: an under-mirror reset type lumbar spondylolisthesis interbody fusion cage comprises a fusion device and a holding device, wherein the fusion device is in threaded connection with the holding device; the fusion device comprises a fixed plate, the fixed plate is of a right trapezoid frustum structure, a movable plate is arranged on one side of an inclined surface of the fixed plate, the movable plate is symmetrical to the fixed plate, the movable plate and the fixed plate form a cuboid structure, a limiting guide rail is arranged on the inclined surface of the fixed plate, the limiting guide rail and the fixed plate are of an integral structure, a limiting groove is formed in the corresponding limiting guide rail on the side wall of the movable plate, the shape of the limiting groove is matched with the shape of the limiting guide rail, the fixed plate and the movable plate are connected with the limiting groove through the limiting guide rail, the movable plate vertically reciprocates along the inclined surface of the fixed plate, a connecting solenoid is vertically arranged at the bottom end of the fixed plate, the connecting solenoid is fixed on the inclined surface of the fixed plate, a solenoid sleeve hole is formed in the corresponding connecting solenoid on the inclined surface of the movable plate, and the solenoid sleeve hole is sleeved on the connecting solenoid; the holding device comprises a supporting handle, a progressive rod is arranged on the supporting handle, the progressive rod is in threaded connection with the supporting handle, the inner diameter of a connecting solenoid is matched with the diameter of the progressive rod, the connecting solenoid is in threaded connection with the progressive rod, and a fixing plate is sleeved at the top end of the progressive rod through the connecting solenoid.
The top end of the fixed plate is provided with a first buffer plate, the first buffer plate and the fixed plate are of an integral structure, the top end of the movable plate is provided with a second buffer plate, the second buffer plate and the movable plate are of an integral structure, the first buffer plate and the second buffer plate are of isosceles trapezoid plate-shaped structures, and the side shape of the first buffer plate is matched with the side shape of the second buffer plate; the top of second buffer plate fixed be equipped with the restriction piece, the restriction groove has been seted up to the corresponding restriction piece in top of first buffer plate, the restriction piece suit is in the restriction groove, the appearance of restriction piece is identical with the structure in restriction groove.
The fixed plate is provided with a movable gear, the movable gear is positioned on the inner side of the fixed plate, one side of the movable gear is provided with a control motor, the movable gear is fixed on the output end of the control motor, the fixed plate is provided with a mounting groove corresponding to the movable gear and the control motor, the movable gear and the control motor are both positioned in the mounting groove, the control motor is fixed in the mounting groove, and the top of the movable gear is positioned on one side of the inclined surface of the fixed plate; the inclined plane of the movable plate is provided with a placing groove, the placing groove is formed to the bottom end of the movable plate along the top end of the movable plate, a movable rack is fixedly arranged in the placing groove, and the movable rack is meshed with the movable gear.
The limiting guide rail adopts an inverted L-shaped plate-shaped structure, the limiting guide rail is arranged to the bottom end of the fixed plate along the top end of the fixed plate, the number of the limiting guide rails is two, the two limiting guide rails are symmetrically arranged on two sides of the inclined surface of the fixed plate, the number of the limiting grooves is two, the two limiting grooves are symmetrically arranged on side walls of two sides of the movable plate, and the two limiting grooves are respectively arranged to the bottom end of the inclined surface of the movable plate along the top end of the inclined surface of the movable plate.
The bottom surface of fixed plate on seted up two fixed slots, the both sides at the fixed plate are seted up to two fixed slot symmetries, the pole that advances one by one on the fixed card that is equipped with, fixed card suit is on the outside of pole that advances one by one, be equipped with two on the fixed card and remove the card, the symmetry setting of two removal cards is in fixed card both sides, the storage tank has been seted up to the corresponding removal card of lateral wall of fixed card, remove the card suit in this storage tank, be equipped with telescopic link group between fixed card and the removal card, fixed card is connected through telescopic link group with the removal card, the appearance of removing the card is identical with the shape of fixed slot, two removal cards are the suit respectively in two fixed slots.
The corresponding telescopic link group of fixed card seted up the mounting groove, telescopic link group suit is in the mounting groove, telescopic link group is including fixed pipe, telescopic link and reset spring, should fix the pipe and this reset spring all the suit on this telescopic link, the one end of this fixed pipe is fixed on the fixed card, the other end of this fixed pipe is fixed in one of this reset spring and is served, the other end of this reset spring and the end that stretches out of this telescopic link are all fixed on removing the card.
The outer side surfaces of the fixed plate and the movable plate are respectively provided with a buffer layer, and the buffer layers are formed by a plurality of groups of grooves in an equidistant criss-cross mode.
The supporting handle is provided with a sleeve hole corresponding to the progressive rod, the sleeve hole is sleeved on the supporting handle, the diameter of the sleeve hole is matched with the diameter of the progressive rod, the bottom side of the progressive rod is sleeved on the supporting handle through the sleeve hole, a reinforcing pipe is sleeved on the progressive rod and located at the bottom end of the progressive rod, the top end of the reinforcing pipe is in contact with the supporting handle, the inner diameter of the reinforcing pipe is matched with the diameter of the progressive rod, the reinforcing pipe is in threaded connection with the progressive rod, the top end of the supporting handle is fixedly provided with a controller, and the controller is sleeved on the progressive rod.
The invention has the beneficial effects that: firstly, the fusion device and the holding device are connected by threads; the fusion device comprises a fixed plate, the fixed plate is of a right trapezoid frustum structure, a movable plate is arranged on one side of an inclined surface of the fixed plate, the movable plate is symmetrical to the fixed plate, the movable plate and the fixed plate form a cuboid structure, a limiting guide rail is arranged on the inclined surface of the fixed plate, the limiting guide rail and the fixed plate are of an integral structure, a limiting groove is formed in the corresponding limiting guide rail on the side wall of the movable plate, the shape of the limiting groove is matched with the shape of the limiting guide rail, the fixed plate and the movable plate are connected with the limiting groove through the limiting guide rail, the movable plate vertically reciprocates along the inclined surface of the fixed plate, a connecting solenoid is vertically arranged at the bottom end of the fixed plate, the connecting solenoid is fixed on the inclined surface of the fixed plate, a solenoid sleeve hole is formed in the corresponding connecting solenoid on the inclined surface of the movable plate, and the solenoid sleeve hole is sleeved on the connecting solenoid; the holding device comprises a supporting handle, a progressive rod is arranged on the supporting handle, the progressive rod is in threaded connection with the supporting handle, the inner diameter of a connecting screw pipe is matched with the diameter of the progressive rod, the connecting screw pipe is in threaded connection with the progressive rod, a fixing plate is sleeved on the top end of the progressive rod through the connecting screw pipe, and the combined height of the fusion device is reduced through the relative movement of a moving plate and the fixing plate, so that the fusion device can conveniently pass through a narrow working channel, the height is increased after the intervertebral space is combined, the aim of expanding and maintaining the height of the intervertebral space is fulfilled, and the fusion device is prevented from being pushed out of the intervertebral space; secondly, the first buffer plate is arranged on the fixed plate, the second buffer plate and the buffer layer are arranged on the movable plate, so that the resistance in the process of entering is reduced, the bone absorption caused by stress concentration is prevented, and the use of a treating person is facilitated; thirdly, the fixing plate is provided with a fixing groove, the progressive rod is provided with a fixing clamping piece and a moving clamping piece, the fixing plate and the progressive rod are further reinforced, the bottom end of the progressive rod is provided with a reinforcing pipe, and the supporting handle and the progressive rod are further reinforced, so that the fixing device is reliable in fixing and the stability of the device is enhanced; in addition, the progressive rod is respectively connected with the fixed plate and the supporting handle through threaded connection, so that the progressive rod is convenient to disassemble, the working efficiency of treatment personnel is greatly improved, and the progressive rod has good social and economic benefits and is a product easy to popularize and use.
Drawings
Fig. 1 is a perspective view of the fusion device of the present invention.
Fig. 2 is a perspective view of the gripping device of the present invention.
Fig. 3 is a perspective view of a fixing plate according to the present invention.
Fig. 4 is a perspective view of the moving plate of the present invention.
Fig. 5 is a schematic view of the installation between the moving gear and the control motor and the fixed plate in the present invention.
Fig. 6 is a schematic cross-sectional view of a mounting clip of the present invention.
Fig. 7 is a perspective view illustrating movement of the fusion device according to the present invention.
Detailed Description
As shown in fig. 1, 2, 3, 4, 5, 6 and 7, the under-mirror reduction type lumbar spondylolisthesis interbody fusion cage comprises a fusion device and a holding device, wherein the fusion device is in threaded connection with the holding device; the fusion device comprises a fixed plate 1, wherein the fixed plate 1 adopts a right trapezoid frustum structure, one side of an inclined surface of the fixed plate 1 is provided with a movable plate 2, the shape of the movable plate 2 is symmetrical to that of the fixed plate 1, the movable plate 2 and the fixed plate 1 form a cuboid structure, a limit guide rail 3 is arranged on the inclined surface of the fixed plate 1, the limit guide rail 3 and the fixed plate 1 are of an integral structure, a limit groove 4 is formed in the corresponding limit guide rail 3 on the side wall of the movable plate 2, the shape of the limit groove 4 is matched with the shape of the limit guide rail 3, the fixed plate 1 and the movable plate 2 are connected through the limit guide rail 3 and the limit groove 4, the movable plate 2 reciprocates up and down along the inclined surface of the fixed plate 1, a connecting solenoid 5 is vertically arranged at the bottom end of the fixed plate 1, the connecting solenoid 5 is fixed on the inclined surface of the fixed plate 1, and a solenoid sleeve hole 6 is formed in the corresponding connecting solenoid 5 on the inclined surface of the movable plate 2, the solenoid sleeve hole 6 is sleeved on the connecting solenoid 5; the holding device comprises a supporting handle 7, a progressive rod 8 is arranged on the supporting handle 7, the progressive rod 8 is in threaded connection with the supporting handle 7, the inner diameter of a connecting solenoid 5 is matched with the diameter of the progressive rod 8, the connecting solenoid 5 is in threaded connection with the progressive rod 8, and the fixing plate 1 is sleeved at the top end of the progressive rod 8 through the connecting solenoid 5.
The top end of the fixed plate 1 is provided with a first buffer plate 9, the first buffer plate 9 and the fixed plate 1 are of an integral structure, the top end of the movable plate 2 is provided with a second buffer plate 10, the second buffer plate 10 and the movable plate 2 are of an integral structure, the first buffer plate 9 and the second buffer plate 10 are of isosceles trapezoid plate-shaped structures, and the side shape of the first buffer plate 9 is matched with the side shape of the second buffer plate 10; the top end of the second buffer plate 10 is fixedly provided with a limiting block 11, the top end of the first buffer plate 9 is provided with a limiting groove 12 corresponding to the limiting block 11, the limiting block 11 is sleeved in the limiting groove 12, and the shape of the limiting block 11 is matched with the structure of the limiting groove 12; a moving gear 13 is arranged on the fixed plate 1, the moving gear 13 is positioned on the inner side of the fixed plate 1, a control motor 14 is arranged on one side of the moving gear 13, the moving gear 13 is fixedly bonded on the output end of the control motor 14, mounting grooves are formed in the fixed plate 1 corresponding to the moving gear and the control motor, the moving gear 13 and the control motor 14 are both positioned in the mounting grooves, the control motor 14 is fixedly bonded in the mounting grooves, and the top of the moving gear 13 is positioned on one side of the inclined surface of the fixed plate 1; a placing groove 15 is formed in the inclined surface of the moving plate 2, the placing groove 15 is formed along the top end of the moving plate 2 to the bottom end of the moving plate 2, a moving rack 16 is fixedly bonded in the placing groove 15, and the moving rack 16 is meshed with the moving gear 13; the utility model discloses a movable plate, including fixed plate 2, spacing guide rail 3, two spacing guide rail 3 symmetry sets up the both sides on fixed plate 1 inclined plane, the corresponding spacing guide rail 3 of quantity of spacing groove 4 adopts two, and two spacing groove 4 symmetries set up on the both sides lateral wall of movable plate 2, and two spacing grooves 4 are seted up to the bottom on movable plate inclined plane respectively along the top on movable plate 2 inclined plane, the bottom of fixed plate 1 is set up along the top of fixed plate 1 to spacing guide rail 3.
The bottom surface of the fixed plate 1 is provided with two fixed grooves 17, the two fixed grooves 17 are symmetrically arranged on two sides of the fixed plate 1, the progressive rod 8 is fixedly provided with a fixed clamping piece 18, the fixed clamping piece 18 is sleeved on the outer side of the progressive rod 8, the fixed clamping piece 18 is provided with two movable clamping pieces 19, the two movable clamping pieces 19 are symmetrically arranged on two sides of the fixed clamping piece 18, the side wall of the fixed clamping piece 18 is correspondingly provided with a storage groove for the movable clamping piece 19, the movable clamping piece 19 is sleeved in the storage groove, a telescopic rod group 20 is arranged between the fixed clamping piece 18 and the movable clamping piece 19, the fixed clamping piece 18 and the movable clamping piece 19 are connected through the telescopic rod group 20, the appearance of the movable clamping piece 19 is matched with the shape of the fixed grooves 17, and the two movable clamping pieces 19 are respectively sleeved in the two fixed grooves 17; the corresponding telescopic link of fixed card 18 group 20 seted up mounting groove 21, telescopic link group 20 suit is in mounting groove 21, telescopic link group 20 is including fixed pipe, telescopic link and reset spring, should fix the pipe and this reset spring all the suit is on this telescopic link, the one end bonding of this fixed pipe is fixed on fixed card 18, the other end bonding of this fixed pipe is fixed in one of this reset spring and is served, the other end of this reset spring and the end that stretches out of this telescopic link all bond and fix on removing card 19.
The outer side surfaces of the fixed plate 1 and the movable plate 2 are respectively provided with a buffer layer 22, and the buffer layers 22 are formed by a plurality of groups of grooves which are staggered in an equidistant manner; the corresponding pole 8 that advances of support handle 7 seted up the trepanning, this trepanning suit is on support handle 7, the aperture of this trepanning matches with the diameter of pole 8 that advances, the bottom side of pole 8 that advances is through this trepanning suit on support handle 7, the pole 8 that advances is gone up to overlap and is equipped with reinforced tube 23, reinforced tube 23 is located the bottom of pole 8 that advances, reinforced tube 23's top contacts with support handle 7, reinforced tube 23's internal diameter matches with the diameter of pole 8 that advances, adopt threaded connection between reinforced tube 23 and the pole 8 that advances, the fixed controller 24 that is equipped with in top of support handle 7, controller 24 suit is on pole 8 that advances, controller 24 and control motor 14 electric connection.
The use method of the product is as follows: as shown in fig. 1, 2, 3, 4, 5, 6 and 7, firstly, the operation of removing intervertebral disc under the mirror and scraping cartilage end plate is completed, the height of intervertebral space is measured by using an expandable trial model, the specification of the product with proper specification is selected, after selection, the fixing plate 1 and the supporting handle 8 are respectively screwed and installed on the progressive rod 8, and the fixing plate 1 and the supporting handle 8 are further fixed by using the movable clamping piece 19 and the reinforcing tube 23; then, the treating personnel controls the moving plate 2 to move upwards relative to the fixed plate 1 through the controller 24, so that the combined width of the fusion device is reduced, and the treating personnel uses the handle to enable the fusion device to enter a working channel below the intervertebral disc scope or a large-size working channel of the intervertebral disc scope; then, when the fusion device reaches the optimal depth, the treating personnel controls the moving plate 2 to move downwards relative to the fixed plate 1 through the controller 24, so that the fixed plate 1 and the moving plate 2 are assembled, the vertebral canal is inspected under a mirror after the assembly is finished, bone fragments are cleared, and the corresponding segments are fixed by adopting a percutaneous pedicle screw-rod system.
In addition, in order to facilitate the use of a therapist, the widths of the fixed plate 1 and the moving plate 2 are respectively selected to be 6 mm, 7 mm or 8mm, the lengths of the fixed plate 1 and the moving plate 2 are respectively selected to be 20 mm, 22 mm, 24 mm or 26 mm, the height of the fusion device after assembly is selected to be 8mm, 9 mm, 10 mm, 11 mm, 12 mm or 13 mm, a working channel needs to be correspondingly selected to be 9-14mm, and the fixed plate 1 and the moving plate 2 are both made of PEEK materials which can provide good mechanical properties and penetrate X rays, so that the intervertebral bone grafting fusion condition can be conveniently observed through photography.
The under-mirror reset type lumbar spondylolisthesis interbody fusion cage is convenient to use, small in combined height, convenient to pass through a narrow working channel, capable of increasing the combined height of intervertebral space to achieve the purpose of expanding and maintaining the height of the intervertebral space, capable of preventing the fusion cage from withdrawing, reliable in fixation and convenient to disassemble and assemble, and has wide market prospect.
Claims (7)
1. The utility model provides a formula that resets under mirror lumbar vertebrae slippage interbody fusion cage which characterized in that: the fusion device is connected with the holding device through threads;
the fusion device comprises a fixed plate (1), the fixed plate (1) adopts a right trapezoid prismatic table structure, one side of an inclined plane of the fixed plate (1) is provided with a movable plate (2), the shape of the movable plate (2) is symmetrical to that of the fixed plate (1), the movable plate (2) and the fixed plate (1) form a cuboid structure, a limit guide rail (3) is arranged on the inclined plane of the fixed plate (1), the limit guide rail (3) and the fixed plate (1) are of an integral structure, a limit groove (4) is formed in the side wall of the movable plate (2) correspondingly to the limit guide rail (3), the shape of the limit groove (4) is matched with the outer shape of the limit guide rail (3), the fixed plate (1) and the movable plate (2) are connected with the limit groove (4) through the limit guide rail (3), the movable plate (2) performs up-down reciprocating motion along the inclined plane of the fixed plate (1), a connecting solenoid (5) is vertically arranged at the bottom end of the fixed plate (1), the connecting solenoid (5) is fixed on the inclined surface of the fixed plate (1), the inclined surface of the movable plate (2) is correspondingly provided with a solenoid sleeve hole (6) in the connecting solenoid (5), and the solenoid sleeve hole (6) is sleeved on the connecting solenoid (5);
the holding device comprises a supporting handle (7), a progressive rod (8) is arranged on the supporting handle (7), the progressive rod (8) is in threaded connection with the supporting handle (7), the inner diameter of the connecting solenoid (5) is matched with the diameter of the progressive rod (8), the connecting solenoid (5) is in threaded connection with the progressive rod (8), and the fixing plate (1) is sleeved on the top end of the progressive rod (8) through the connecting solenoid (5);
the movable gear (13) is arranged on the fixed plate (1), the movable gear (13) is located on the inner side of the fixed plate (1), a control motor (14) is arranged on one side of the movable gear (13), the movable gear (13) is fixed on the output end of the control motor (14), mounting grooves are formed in the fixed plate (1) corresponding to the movable gear and the control motor, the movable gear (13) and the control motor (14) are located in the mounting grooves, the control motor (14) is fixed in the mounting grooves, and the top of the movable gear (13) is located on one side of an inclined surface of the fixed plate (1); the movable plate is characterized in that a placing groove (15) is formed in the inclined surface of the movable plate (2), the placing groove (15) is formed in the bottom end of the movable plate (2) along the top end of the movable plate (2), a movable rack (16) is fixedly arranged in the placing groove (15), and the movable rack (16) is meshed with the movable gear (13).
2. The under-mirror reduction type lumbar spondylolisthesis interbody fusion cage of claim 1, wherein: the top end of the fixed plate (1) is provided with a first buffer plate (9), the first buffer plate (9) and the fixed plate (1) are of an integral structure, the top end of the moving plate (2) is provided with a second buffer plate (10), the second buffer plate (10) and the moving plate (2) are of an integral structure, the first buffer plate (9) and the second buffer plate (10) are of isosceles trapezoid plate-shaped structures, and the side shape of the first buffer plate (9) is identical to the side shape of the second buffer plate (10); the top end of the second buffer plate (10) is fixedly provided with a limiting block (11), a limiting groove (12) is formed in the corresponding limiting block (11) at the top end of the first buffer plate (9), the limiting block (11) is sleeved in the limiting groove (12), and the appearance of the limiting block (11) is matched with the structure of the limiting groove (12).
3. The under-mirror reduction type lumbar spondylolisthesis interbody fusion cage of claim 1, wherein: limit guide rail (3) adopt to invert L style of calligraphy platelike structure, limit guide rail (3) set up to the bottom of fixed plate (1) along the top of fixed plate (1), the quantity of limit guide rail (3) adopts two, two limit guide rail (3) symmetries set up the both sides on fixed plate (1) inclined plane, the corresponding limit guide rail (3) of quantity of spacing groove (4) adopt two, two limit groove (4) symmetries set up on the both sides lateral wall of movable plate (2), two limit groove (4) are seted up to the bottom on movable plate inclined plane along the top on movable plate (2) inclined plane respectively.
4. The under-mirror reduction type lumbar spondylolisthesis interbody fusion cage of claim 1, wherein: the bottom surface of the fixed plate (1) is provided with two fixed grooves (17), the two fixed grooves (17) are symmetrically arranged on two sides of the fixed plate (1), the progressive rod (8) is fixedly provided with fixed clamping pieces (18), the fixed clamping pieces (18) are sleeved on the outer side of the progressive rod (8), the fixed clamping pieces (18) are provided with two movable clamping pieces (19), the two movable clamping pieces (19) are symmetrically arranged on two sides of the fixed clamping pieces (18), the side walls of the fixed clamping pieces (18) are correspondingly provided with storage grooves corresponding to the movable clamping pieces (19), the movable clamping pieces (19) are sleeved in the storage grooves, telescopic rod groups (20) are arranged between the fixed clamping pieces (18) and the movable clamping pieces (19), the fixed clamping pieces (18) are connected with the movable clamping pieces (19) through the telescopic rod groups (20), and the appearance of the movable clamping pieces (19) is matched with the shapes of the fixed grooves (17), the two movable clamping pieces (19) are respectively sleeved in the two fixing grooves (17).
5. The under-mirror reduction type lumbar spondylolisthesis interbody fusion cage of claim 4, wherein: the corresponding telescopic link group (20) of fixed card (18) seted up mounting groove (21), telescopic link group (20) suit is in mounting groove (21), telescopic link group (20) is including fixed pipe, telescopic link and reset spring, should fix the pipe and should the equal suit of reset spring on this telescopic link, the one end of this fixed pipe is fixed on fixed card (18), the other end of this fixed pipe is fixed and is served at one of this reset spring, the other end of this reset spring and the end that stretches out of this telescopic link are all fixed on removing card (19).
6. The under-mirror reduction type lumbar spondylolisthesis interbody fusion cage of claim 1, wherein: the buffer layer (22) is respectively arranged on the outer side surfaces of the fixed plate (1) and the movable plate (2), and the buffer layer (22) is formed by a plurality of groups of grooves in an equidistant criss-cross mode.
7. The under-mirror reduction type lumbar spondylolisthesis interbody fusion cage of claim 1, wherein: support handle (7) corresponding pole (8) that advances one by one seted up the trepanning, this trepanning suit is on supporting handle (7), the aperture of this trepanning cooperatees with the diameter of pole (8) that advances one by one, the bottom side of pole (8) that advances one by one is through this trepanning suit on supporting handle (7), the cover is equipped with reinforced pipe (23) on pole (8) that advances one by one, reinforced pipe (23) are located the bottom of pole (8) that advances one by one, the top of reinforced pipe (23) contacts with supporting handle (7), the internal diameter of reinforced pipe (23) cooperatees with the diameter of pole (8) that advances one by one, adopt threaded connection between reinforced pipe (23) and the pole (8) that advances one by one, the top of supporting handle (7) is fixed to be equipped with controller (24), controller (24) suit is on pole (8) that advances one by one.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911038942.8A CN110974492B (en) | 2019-10-29 | 2019-10-29 | Under-mirror reset type lumbar spondylolisthesis interbody fusion cage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911038942.8A CN110974492B (en) | 2019-10-29 | 2019-10-29 | Under-mirror reset type lumbar spondylolisthesis interbody fusion cage |
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| Publication Number | Publication Date |
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| CN110974492A CN110974492A (en) | 2020-04-10 |
| CN110974492B true CN110974492B (en) | 2021-08-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2503963A2 (en) * | 2009-11-24 | 2012-10-03 | Spine21 Ltd. | Spinal fusion cage having post-operative adjustable dimensions |
| CN105326587B (en) * | 2015-12-09 | 2017-05-03 | 北京市富乐科技开发有限公司 | Opening type interbody fusion cage |
| CN205758769U (en) * | 2016-04-05 | 2016-12-07 | 广州爱锘德医疗器械有限公司 | Threaded fusion cage |
| CN107126301B (en) * | 2017-06-14 | 2018-05-22 | 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 |
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2019
- 2019-10-29 CN CN201911038942.8A patent/CN110974492B/en active Active
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| Publication number | Publication date |
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