CN117860444B - Porous centrum fusion device - Google Patents

Abstract

The invention relates to the technical field of interbody fusion fixation, in particular to a porous interbody fusion cage which comprises a fusion body, a mounting body, a sliding frame and a propping column, wherein the fusion body is mounted in the mounting body; the beneficial effects of the invention are as follows: when the device is installed, only the installation body is required to be aligned with the intervertebral position, the jacking plate can automatically jack up two vertebrae to realize the function of automatic positioning, and then the installation body can be installed, so that the device can avoid manual installation of medical staff when in use, the phenomenon of inaccurate positioning and multiple installation during installation is prevented, and simultaneously, the fusion holes on the outer wall of the fusion body of the device can be convenient for the growth of bones and is convenient for healing.

Description

Porous centrum fusion device

Technical Field

The invention relates to the technical field of intervertebral fusion fixation, in particular to a porous type vertebral fusion device.

Background

The degenerative disc disease with symptoms of lumbar disc herniation, cervical spondylosis and the like is a common disease and frequently-occurring disease in the modern society, and seriously affects the life quality of patients; spinal fusion is one of the most widely used techniques in spinal surgery, and is mainly promoted by establishing immediate stabilization of the spine and osteogenesis, osteoinduction and bone conduction of implants; at present, the intervertebral fusion has become a main means for treating lumbar instability, lumbar spinal stenosis, degenerative centrum slippage, degenerative scoliosis, false joint, degenerative disc diseases and other diseases; the fusion device in the prior art is mainly divided into two types according to the difference of the bone growth modes after operation, wherein the first type is a fusion device provided with a bone grafting area, and the second type is a fusion device not provided with a bone grafting area.

The Chinese patent (CN 105287061B) discloses an interfacial type interbody fusion cage, which is characterized by comprising a fusion part A, a fusion part B and a connecting part connected between the fusion part A and the fusion part B, wherein the outer end surfaces of the fusion part A and the fusion part B are of net-shaped porous structures, meshes A of the net-shaped porous structures of the outer end surfaces of the fusion part A axially penetrate through the fusion part A, the inner side opening of the meshes A is larger than the outer side opening, meshes B of the net-shaped porous structures penetrating through the outer end surfaces of the fusion part B axially penetrate through the fusion part B, and the inner side opening of the meshes B is larger than the outer side opening; the axial sizes of the fusion part A and the fusion part B are 1-2 mm; the through hole A axially penetrates through the fusion part A, the fusion part B and the connecting part, and the diameter of the through hole A is larger than that of the mesh A and the mesh B.

The above patent shortens the distance and healing time of bone growth from about 1 cm to about 2mm in the intervertebral fusion, improves the fusion rate, thereby reducing the time of postoperative braking of patients and relieving the physical and psychological pains of the patients, but when the vertebral fusion device is implanted, automatic installation cannot be realized, two cones are required to be manually opened, the installation is troublesome, repeated installation for many times can cause great pain of patients and influence the fusion of bones, and meanwhile, the height of the fusion body cannot be adjusted for different patients, so that the fusion efficiency of the later-stage vertebral bodies is slow.

Thus, there is a need for a porous vertebral fusion cage that addresses the above-described problems.

Disclosure of Invention

In order to solve the problems, namely, the problems that the fusion body can be automatically installed and the height of the fusion body is convenient to adjust, the invention provides a porous vertebral fusion device.

The utility model provides a porous centrum fusion ware, includes fusion, installation body, carriage and supports the jack-up post, the fusion is installed the inside of installation body, the inside sliding connection of fusion front end has a top to stretch the board, the top stretch the board pass through the carriage with the installation body drive is connected, the inside sliding connection of top stretch board outer wall has an upper top board, upper top board and centrum support the jack-up, the inside sliding connection of fusion has the fusion post, the fusion post with support the one end of jack-up post supports the jack-up, support jack-up post sliding connection on the inside wall of fusion, support the jack-up post with installation body drive connection, the fusion hole has been seted up on the outer wall of fusion, the inside sliding connection of installation body has the promotion case, the inside of promotion case is hollow structure.

Above-mentioned porous centrum fusion cage, set up T type spout on the outer wall of top stretch board, go up roof sliding connection and be in top stretch the board and keep away from the inside of T type spout one end, set up first fusion hole on the outer wall of top stretch board, the quantity of first fusion hole is a plurality of, and is a plurality of first fusion hole is horizontal even form arrangement and sets up on the outer wall of top stretch board, the quantity of top stretch board is two, two top stretch board relative displacement.

Above-mentioned porous centrum fusion ware, carriage sliding connection is in the inside of fusion, the middle part fixed mounting of carriage has the reinforcing plate, the inside rotation of carriage one end is connected with the top and stretches the lead screw, one side threaded connection that the board was stretched to the top is in on the outer wall that the lead screw was stretched to the top, the screw thread at the upper and lower portion both ends is opposite, fixed mounting has the top on the outer wall that stretches the lead screw middle part to stretch the umbrella tooth, the extraction hole has been seted up on the inside wall of fusion, the inside of extraction hole is provided with the drive shaft, the drive shaft is located fixed mounting has the drive umbrella tooth on the outer wall of the inside one end of fusion, the drive umbrella tooth with the top stretches umbrella tooth meshing to be connected, the pulling groove has been seted up on the inner wall of reinforcing plate, fixed mounting has first spiral spring on the outer wall of top stretching the lead screw bottom, the other end of first spiral spring with the outer wall fixed connection of carriage.

Above-mentioned porous centrum fusion cage, the shape of going up the roof is right angle triangle bodily form, the inside of going up the roof is hollow structure, the inside sliding connection of going up the roof has the flitch, the one end of flitch is supported with the one end that the piece was stretched in the top, the piece sliding connection is stretched in the top on the inner wall of roof inclined plane end, the other end of flitch is supported with the one end of flexible slider, flexible slider is installed on the inside wall of top stretching the board, the top of flexible slider with the bottom of going up the roof supports.

Above-mentioned porous centrum fusion cage, sliding connection has the closing plate on the inner wall of fusion, fixed mounting has T type slider on the outer wall of closing plate, T type slider seals sliding connection in the inside of T type spout.

Above-mentioned porous centrum fusion ware, the one end of fusion post sets up to trapezoidal, the other end of fusion post and the one end fixed connection of straight panel, straight panel sliding connection is in the inside of fusion, the inside sliding connection of straight panel has first expansion plate, the one end of first expansion plate and the one end fixed connection of first expansion spring, the other end of first expansion spring with the inner wall fixed connection of straight panel, first draw-in groove has been seted up on the interior roof of fusion, first draw-in groove with first expansion plate assorted, the other end of straight panel with the one end fixed connection of sloping block, the other end of sloping block sets up to the inclined plane, the inclined plane end of sloping block with prop against the one end of jack-prop, straight panel with the second fuses the hole has been seted up on the outer wall of fusion post.

The inner wall of one end of the fusion body is provided with the sliding groove, the propping column is slidably connected in the sliding groove, the side wall of the propping column is slidably connected with the second expansion plate, one end of the second expansion plate is fixedly provided with the second expansion spring, the other end of the second expansion spring is fixedly connected with the inner side wall of the propping column, the outer wall of one end of the propping column is provided with the inserting groove, the inside of the inserting groove is provided with the clamping hole, the inner side wall of the sliding groove is provided with the second clamping groove, and the second clamping groove is matched with the second expansion plate;

The sliding frame is characterized in that a third expansion plate is connected to the inner wall of the bottom of the sliding frame in a sliding manner, a third expansion spring is fixedly arranged at one end of the third expansion plate, the other end of the third expansion spring is fixedly connected with the inner wall of the sliding frame, a third clamping groove is formed in the inner bottom wall of the fusion body, and the third clamping groove is matched with the third expansion plate.

Above-mentioned porous centrum fusion cage, the third fuses the hole has been seted up on the outer wall of fusion, the third fuses the hole with the inner wall of fusion is not switched on, first fuse the hole with the third fuses the hole the same, the third fuse the hole with the quantity of second fuses the hole is a plurality of.

Above-mentioned porous centrum fusion cage, rotate on the lateral wall of installation body one end and be connected with the promotion lead screw, promote case threaded connection and be in on the outer wall of promotion lead screw, install the second scroll spring on the outer wall of promotion lead screw one end, the other end of second scroll spring with the inner wall fixed connection who promotes the case, the inside of promoting the case is provided with the spliced pole, fixed mounting has the spliced block on the outer wall of spliced pole one end, the spliced block with draw-in hole assorted.

In the porous vertebral fusion cage, the number of the driving shafts is two, and the two driving shafts are in driving connection through the driving belt.

The beneficial effects of the invention are as follows:

1. according to the invention, by arranging the jacking plate, when the device is installed, the jacking plate can automatically jack up two vertebrae after the installation body is aligned to the position between vertebrae, so that the automatic positioning function is realized, and then the installation body can be installed, so that when the device is used, the manual installation of medical staff can be avoided, the phenomena of inaccurate positioning and multiple installation during the installation are prevented, and meanwhile, the fusion holes on the outer wall of the fusion body of the device can facilitate the growth of bones and healing.

2. According to the invention, through the arrangement of the driving shaft and the first scroll spring, when the device is not installed in the body, the device can be automatically jacked up through first power accumulation and energy storage during installation, no additional auxiliary tool is needed, the installation is convenient and quick, automatic positioning and installation can be realized, manual action is not needed during installation, and the phenomenon that a patient is secondarily injured due to overlarge manual action is avoided.

3. According to the invention, through the arrangement of the upper top plate, the device can rapidly open the distance between two cones, the distance between the two cones is larger, meanwhile, the upper top plate is set to be an inclined plane, the device can conveniently and automatically shrink after the upper top is finished, the upper top plate does not need to be manually pressed for shrinking, and the device can automatically seal the inner wall of the fusion body after the upper top is finished through the arrangement of the top extension plate and the sliding frame, so that adverse effects on parts inside the fusion body when bone fusion occurs are avoided.

4. According to the invention, when the top extension plate is displaced, a top extension cavity is left on the outer wall of the fusion body, the cavity is communicated with the inner wall of the fusion body, in order to avoid the existence of the cavity, when the top extension plate is displaced, the top extension plate drives the sealing plate to displace, so that the sealing of the cavity is realized, meanwhile, when the top extension plate is displaced inwards, the T-shaped sliding block can slide in the T-shaped sliding groove, the sealing of the interior of the fusion body is not influenced, and meanwhile, the sealing plate is more stable in connection and stronger in sealing performance through the arrangement of the T-shaped sliding groove and the T-shaped sliding block.

5. The device can automatically fix a plurality of parts, avoid the phenomenon of movement of the fusion body caused by vibration inside the fusion body after bone fusion, ensure the safety and the reliability of the fusion body after bone fusion, and simultaneously can be conveniently used for patients with different centrum intervals by arranging the fusion column, is suitable for various patients, is convenient for adjusting the height, and simultaneously can increase the contact area of the fusion column during bone fusion and greatly increase the fusion of the bone and the fusion body.

6. The invention adopts the arrangement of a plurality of fusion holes, can facilitate the bone growth and the fusion in the holes, increases the contact surface of the device, facilitates the fusion, and prevents the bone from contacting with the parts in the fusion because the multiple holes are not communicated with the interior of the fusion; the pushing box of this device can be after the installation automatic re-setting, drives simultaneously and supports the jack-prop and reset, supports the jack-prop and plays sealed effect to the spout, and the spliced eye can play the effect of fusion hole simultaneously, is convenient for the osseous fusion.

Drawings

FIG. 1 is a schematic view of the structure of the installation body and fusion body of the present invention;

FIG. 2 is a schematic diagram of a three-dimensional structure of a fusion body according to the present invention;

FIG. 3 is a schematic cross-sectional view of a fusion of the present invention;

FIG. 4 is a schematic view of a carriage according to the present invention;

FIG. 5 is a schematic cross-sectional view of a top extension plate of the present invention;

FIG. 6 is a schematic cross-sectional structural view of the outer wall of the fusion body of the present invention;

FIG. 7 is a schematic cross-sectional structural view of a fusion body II of the present invention;

FIG. 8 is a schematic view of the structure of the inside of the straight panel of the present invention;

FIG. 9 is a schematic cross-sectional three-dimensional structural view of a fusion of the present invention;

FIG. 10 is a schematic cross-sectional view of an abutment post according to the present invention;

FIG. 11 is a schematic cross-sectional structural view of a fusion sidewall of the present invention;

FIG. 12 is a schematic cross-sectional structural view of an installation body of the present invention;

fig. 13 is a schematic sectional view of the push box of the present invention.

In the figure:

1. A fusion; 2. a mounting body; 3. a top extension plate; 4. a carriage; 5. an upper top plate; 6. a fusion column; 7. a supporting column; 8. pushing the box; 9. a T-shaped chute; 10. a first fusion hole; 11. pushing and extending a screw rod; 12. a reinforcing plate; 13. pushing and stretching umbrella teeth; 14. a drive shaft; 15. driving the umbrella teeth; 16. a first scroll spring; 17. pulling out the hole; 18. a pushing plate; 19. a top extension block; 20. a telescopic slide block; 21. a sealing plate; 22. a T-shaped slider; 23. a straight panel; 24. a sloping block; 25. a second fusion hole; 26. a first expansion plate; 27. a second expansion plate; 28. pulling the groove; 29. a second extension spring; 30. a first extension spring; 31. a first clamping groove; 32. a plug-in groove; 33. a clamping hole; 34. a chute; 35. a second clamping groove; 36. a third expansion plate; 37. a third extension spring; 38. a third clamping groove; 39. a third fusion hole; 40. pushing a screw rod; 41. a plug-in column; 42. a plug block; 43. a second scroll spring; 44. a driving belt.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.

As shown in fig. 1-3, the embodiment of the invention discloses a porous cone fusion device, which comprises a fusion body 1, a mounting body 2, a sliding frame 4 and a propping column 7, wherein the fusion body 1 is mounted in the mounting body 2, a propping plate 3 is slidingly connected in the front end of the fusion body 1, the propping plate 3 is in driving connection with the mounting body 2 through the sliding frame 4, an upper top plate 5 is slidingly connected in the outer wall of the propping plate 3, the upper top plate 5 is propped against the cone, a fusion column 6 is slidingly connected in the fusion body 1, the fusion column 6 is propped against one end of the propping column 7, the propping column 7 is slidingly connected on the inner side wall of the fusion body 1, as shown in fig. 7 and 12, the propping column 7 is in driving connection with the mounting body 2, a fusion hole is formed in the outer wall of the fusion body 1, a pushing box 8 is slidingly connected in the inner part of the mounting body 2, and the pushing box 8 is of a hollow structure; this device is through setting up of top extension board 3, can make this device when installing, only need with installation body 2 aim at the back of intervertebral position, top extension board 3 can realize two blocks of centrum of automatic jack-up, realize automatic positioning's function, then installation body 2 can install, make this device when using, can avoid medical personnel's manual installation, the phenomenon of inaccurate and multiple installation of location when preventing the installation, the integration hole on the 1 outer wall of integration body of this device can be convenient for the growth of bone simultaneously, the healing of being convenient for.

As shown in fig. 2-3, the outer wall of the top extension plate 3 is provided with a T-shaped chute 9, the upper top plate 5 is slidably connected inside one end of the top extension plate 3 far away from the T-shaped chute 9, the outer wall of the top extension plate 3 is provided with a plurality of first fusion holes 10, the plurality of first fusion holes 10 are arranged on the outer wall of the top extension plate 3 in a transversely uniform manner, the number of the top extension plate 3 is two, and the two top extension plates 3 are relatively displaced.

As shown in fig. 3-4, the sliding frame 4 is slidably connected in the fusion body 1, the middle part of the sliding frame 4 is fixedly provided with a reinforcing plate 12, one end of the sliding frame 4 is rotatably connected with a jacking screw rod 11, one side of the jacking plate 3 is in threaded connection with the outer wall of the jacking screw rod 11, threads at two ends of the upper part and the lower part of the jacking screw rod 11 are opposite, the outer wall of the middle part of the jacking screw rod 11 is fixedly provided with a jacking bevel gear 13, the inner side wall of the fusion body 1 is provided with a pulling hole 17, the inside of the pulling hole 17 is provided with a driving shaft 14, the driving shaft 14 is fixedly provided with a driving bevel gear 15 on the outer wall of one end of the inner part of the fusion body 1, the driving bevel gear 15 is in meshed connection with the jacking bevel gear 13, the inner wall of the reinforcing plate 12 is provided with a pulling groove 28, the outer wall of the bottom of the jacking screw rod 11 is fixedly provided with a first scroll spring 16, and the other end of the first scroll spring is fixedly connected with the outer wall of the sliding frame 4; when the device is used, the driving shaft 14 is rotated, the driving shaft 14 rotates under the action of the driving bevel gear 15 and the pushing bevel gear 13, the pushing screw rod 11 rotates, in the initial state of the device, the distance between the two pushing plates 3 is the maximum limit distance, namely the two pushing plates 3 are positioned at the upper end and the lower end of the fusion body 1, at the moment, the rotation of the pushing screw rod 11 can drive the two pushing plates 3 to perform similar displacement, when the displacement reaches the condition that the two pushing plates 3 mutually prop against each other, the pushing screw rod 3 is stopped, meanwhile, the first spiral spring 16 on the outer wall of the pushing screw rod 11 is in a compressed state, after the driving shaft 14 is out, the pushing bevel gear 13 is disengaged from the driving bevel gear 15, at the moment, the pushing screw rod 11 is out of limit, under the action of the first spiral spring 16, automatic reversion can be realized, at the moment, the reversing screw rod 11 is driven to move in opposite directions of the two pushing plates 3, the distance between the two pushing plates 3 is increased, and the two supporting plates 3 prop against each other, so that the two supporting bodies are realized; this device passes through the setting of drive shaft 14 and first spiral spring 16, can make this device when not installing internally, through the first power energy storage that holds, when installing, can jack-up automatically, does not need extra appurtenance, convenient and fast installs, and can realize automatic positioning installation, and this device does not need manual operation when the installation, avoids appearing the too big phenomenon that leads to the patient of manual operation receives the secondary injury.

As shown in fig. 5, the upper top plate 5 is in a right triangle shape, the inside of the upper top plate 5 is of a hollow structure, a pushing plate 18 is slidably connected in the upper top plate 5, one end of the pushing plate 18 abuts against one end of a pushing block 19, the pushing block 19 is slidably connected on the inner wall of the inclined surface end of the upper top plate 5, the other end of the pushing plate 18 abuts against one end of a telescopic sliding block 20, the telescopic sliding block 20 is arranged on the inner wall of the pushing plate 3, and the top of the telescopic sliding block 20 abuts against the bottom of the upper top plate 5; the top plate 5 of the device is positioned at the top of the top extension plate 3 in the initial state, at the moment, the top of the telescopic sliding block 20 is propped against the bottom of the top plate 5, the limiting effect is achieved on the top plate 5, when the top extension plate 3 ascends to the limiting position, namely, the topmost part of the side wall of the fusion body 1 stops moving, at the moment, the sliding frame 4 is pulled to enable the sliding frame 4 to drive the top extension plate 3 to move, when the top extension plate 3 moves, the top extension plate 3 is positioned at the topmost part of the fusion body 1, at the moment, the inward displacement of the fusion body 1 enables the top extension block 19 to prop against the outer wall of the fusion body 1, the top extension block 19 props against the pushing plate 18, the pushing plate 18 carries out displacement, the other end of the pushing plate 18 props against the telescopic sliding block 20, the telescopic sliding block 20 contracts at the moment, and under the action of the top stress of the top plate 5, the top plate 5 slides into the top extension plate 3, and is fused at the moment; this device is through setting up of roof 5, can make this device when opening two cone intervals, can be quick and open the distance bigger, roof 5 sets up to the inclined plane simultaneously, can realize that this device finishes the back on the top, can be convenient for automatic shrink, need not manual pressing roof 5 shrink, this device stretches board 3 and carriage 4's setting through the top, can make this device finish the back on the top, can seal the inner wall of fusion 1 voluntarily, avoid appearing when the bone fusion, produce adverse effect with the inside part of fusion 1.

As shown in fig. 6, a sealing plate 21 is slidably connected to the inner wall of the fusion body 1, a T-shaped sliding block 22 is fixedly installed on the outer wall of the sealing plate 21, and the T-shaped sliding block 22 is hermetically and slidably connected to the inside of the T-shaped sliding groove 9; this device can make the cavity that the top stretched on the outer wall of fusion 1 left when top stretch board 3 carries out the displacement, this cavity switches on with the inner wall of fusion 1, in order to avoid the existence of cavity, when top stretch board 3 carries out the displacement, will make top stretch board 3 drive closing plate 21 and carry out the displacement, realize the seal to the cavity, when top stretch board 3 carries out inwards the displacement simultaneously, can make T type slider 22 slide in the inside of T type spout 9, do not influence the inside seal of fusion 1, this device passes through the setting of T type spout 9 and T type slider 22 simultaneously, make this device closing plate 21 connect more stable, the leakproofness is stronger.

As shown in fig. 7-9, one end of the fusion column 6 is trapezoid, the other end of the fusion column 6 is fixedly connected with one end of a straight panel 23, the straight panel 23 is slidably connected inside the fusion body 1, a first expansion plate 26 is slidably connected inside the straight panel 23, one end of the first expansion plate 26 is fixedly connected with one end of a first expansion spring 30, the other end of the first expansion spring 30 is fixedly connected with the inner wall of the straight panel 23, a first clamping groove 31 is formed in the inner top wall of the fusion body 1, the first clamping groove 31 is matched with the first expansion plate 26, the other end of the straight panel 23 is fixedly connected with one end of an inclined block 24, the other end of the inclined block 24 is an inclined plane, the inclined plane end of the inclined block 24 abuts against one end of an abutting column 7, and second fusion holes 25 are formed in the outer walls of the straight panel 23 and the fusion column 6; the fusion column 6 of this device is being located the inside of fusion 1 at initial condition, when the internal displacement of jack-up post 7, the sloping block 24 receives outside jack-up force this moment, will make sloping block 24 jack-up fusion column 6 carry out outside displacement for fusion column 6 roll-off fusion 1's outside, when sliding extreme position, first expansion plate 26 will jack-up with first draw-in groove 31, make first expansion plate 26 enter into the inside of first draw-in groove 31, realize the fixed to fusion column 6.

As shown in fig. 9-10, a chute 34 is formed on the inner wall of one end of the fusion body 1, a propping column 7 is slidably connected in the chute 34, a second expansion plate 27 is slidably connected on the side wall of the propping column 7, a second expansion spring 29 is fixedly mounted at one end of the second expansion plate 27, the other end of the second expansion spring 29 is fixedly connected with the inner wall of the propping column 7, a plugging slot 32 is formed on the outer wall of one end of the propping column 7, a clamping hole 33 is formed in the plugging slot 32, a second clamping slot 35 is formed in the inner wall of the chute 34, and the second clamping slot 35 is matched with the second expansion plate 27; the inner wall of the bottom of the sliding frame 4 is slidably connected with a third expansion plate 36, one end of the third expansion plate 36 is fixedly provided with a third expansion spring 37, the other end of the third expansion spring 37 is fixedly connected with the inner wall of the sliding frame 4, the inner bottom wall of the fusion body 1 is provided with a third clamping groove 38, and the third clamping groove 38 is matched with the third expansion plate 36; when the device is used, the propping column 7 is propped against the inclined block 24, so that the fusion column 6 extends out, and after the fusion column 6 is pushed out, automatic fixing can be realized through the arrangement of three telescopic plates and three clamping grooves, automatic clamping can be realized after the sliding frame 4 is retracted and the propping column 7 is propped against and reset, and the movable part is automatically fixed; the device can be automatically fixed by a plurality of parts, the phenomenon of activity caused by vibration inside the fusion body 1 is avoided after bone fusion, the safety and the reliability of the fusion body after bone fusion are guaranteed, meanwhile, the device can be conveniently used for patients with different centrum distances through the arrangement of the fusion column 6, the device is applicable to various patients, the height is convenient to adjust, meanwhile, the fusion column 6 stretches out, the contact area of the bone fusion can be increased, and the fusion of the bone and the fusion body 1 is greatly increased.

As shown in fig. 11, the outer wall of the fusion body 1 is provided with a third fusion hole 39, the third fusion hole 39 is not communicated with the inner wall of the fusion body 1, the first fusion hole 10 is the same as the third fusion hole 39, and the number of the third fusion hole 39 and the second fusion hole 25 is multiple; this device adopts the setting in a plurality of fusion holes, can be convenient for bone growth and fusion downthehole, increases the contact surface of this device, is convenient for fuse, and the inside of porous and fusion body 1 is not switched on simultaneously, prevents that the bone from being located with the inside spare part contact of fusion body 1.

As shown in fig. 12-13, a pushing screw 40 is rotatably connected to a side wall at one end of the installation body 2, a pushing box 8 is in threaded connection with the outer wall of the pushing screw 40, a second scroll spring 43 is installed on the outer wall at one end of the pushing screw 40, the other end of the second scroll spring 43 is fixedly connected with the inner wall of the pushing box 8, a plug-in column 41 is arranged in the pushing box 8, a plug-in block 42 is fixedly installed on the outer wall at one end of the plug-in column 41, and the plug-in block 42 is matched with the clamping hole 33; when the device is used, the second spiral spring 43 is in an energy storage state by rotating the pushing screw rod 40, meanwhile, the plug-in column 41 is rotated, the plug-in block 42 is plugged into the inside of the mass clamping hole 33, when the fusion body 1 is installed, the pushing box 8 pushes the fusion body 1 to enter between two vertebral bodies, after the fusion body 1 is installed, the pushing screw rod 40 drives the pushing box 8 to reset and displace under the action of the second spiral spring 43, and meanwhile, the plug-in column 41 pulls the propping column 7 to displace, so that the propping column 7 seals the sliding groove 34; the pushing box 8 of this device can be after the installation automatic re-setting, drives simultaneously and supports jack-prop 7 and reset, supports jack-prop 7 and plays sealed effect to spout 34, and grafting groove 32 can play the effect of fusion hole simultaneously, the osseous fusion of being convenient for.

As shown in fig. 13, the number of the driving shafts 14 is two, and the two driving shafts 14 are drivingly connected by a transmission belt 44; the pushing box 8 of this device when resetting, can drive shaft 14 and shift for drive bevel gear 15 carries out the joint with pulling groove 28, drives carriage 4 simultaneously and shifts, and drive bevel gear 15 and pulling groove 28 joint position are less, and after carriage 4 joint, drive bevel gear 15 breaks away from with pulling groove 28, makes drive shaft 14, spliced pole 41 and installation body 2 be located outside the human body, avoids leaving the hidden danger.

It should be noted that, in the description of the present invention, terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus/means that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus/means.

Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.

Claims (3)

1. The utility model provides a porous centrum fusion ware, its characterized in that includes fusion (1), installation body (2), carriage (4) and supports jack-up post (7), fusion (1) is installed the inside of installation body (2), the inside sliding connection of fusion (1) front end has top to stretch board (3), top stretch board (3) through carriage (4) with installation body (2) drive connection, the inside sliding connection of top stretch board (3) outer wall has upper roof (5), upper roof (5) are supported with the centrum, the inside sliding connection of fusion (1) has fusion post (6), fusion post (6) with the one end of support jack-up post (7) supports the jack-up post (7) sliding connection on the inside wall of fusion (1), support jack-up post (7) with installation body (2) drive connection, offer third fusion hole (39) on the outer wall of fusion (1), interior sliding connection of installation body (8) has the inside slip connection of box (8);

The T-shaped sliding groove (9) is formed in the outer wall of the top extending plate (3), the upper top plate (5) is slidably connected to the inside of one end, away from the T-shaped sliding groove (9), of the top extending plate (3), first fusion holes (10) are formed in the outer wall of the top extending plate (3), the number of the first fusion holes (10) is multiple, the first fusion holes (10) are transversely and uniformly arranged on the outer wall of the top extending plate (3), the number of the top extending plates (3) is two, and the two top extending plates (3) are relatively displaced;

The sliding frame (4) is in sliding connection with the inside of the fusion body (1), a reinforcing plate (12) is fixedly arranged in the middle of the sliding frame (4), a top extending screw rod (11) is rotatably connected with the inside of one end of the sliding frame (4), one side of the top extending plate (3) is in threaded connection with the outer wall of the top extending screw rod (11), threads at two ends of the upper part and the lower part of the top extending screw rod (11) are opposite, a top extending umbrella tooth (13) is fixedly arranged on the outer wall of the middle of the top extending screw rod (11), a pulling hole (17) is formed in the inner side wall of the fusion body (1), a driving umbrella tooth (15) is fixedly arranged in the outer wall of one end of the driving shaft (14) positioned in the fusion body (1), the driving umbrella tooth (15) is in meshed connection with the top extending umbrella tooth (13), a pulling groove (28) is formed in the inner wall of the reinforcing plate (12), a first scroll spring (16) is fixedly arranged on the outer wall of the bottom of the top extending screw rod (11), and a scroll spring (4) is fixedly connected with the other end of the first scroll;

The upper top plate (5) is in a right triangle shape, the inside of the upper top plate (5) is of a hollow structure, a pushing plate (18) is connected in the upper top plate (5) in a sliding manner, one end of the pushing plate (18) abuts against one end of a pushing block (19), the pushing block (19) is connected on the inner wall of the inclined surface end of the upper top plate (5) in a sliding manner, the other end of the pushing plate (18) abuts against one end of a telescopic sliding block (20), the telescopic sliding block (20) is mounted on the inner side wall of the pushing plate (3), and the top of the telescopic sliding block (20) abuts against the bottom of the upper top plate (5);

The inner wall of the fusion body (1) is connected with a sealing plate (21) in a sliding manner, a T-shaped sliding block (22) is fixedly arranged on the outer wall of the sealing plate (21), and the T-shaped sliding block (22) is connected in the T-shaped sliding groove (9) in a sealing sliding manner;

The one end of fusion post (6) sets up to trapezoidal, the other end of fusion post (6) and the one end fixed connection of straight panel (23), straight panel (23) sliding connection is in the inside of fusion body (1), the inside sliding connection of straight panel (23) has first expansion plate (26), the one end of first expansion plate (26) and the one end fixed connection of first expansion spring (30), the other end of first expansion spring (30) with the inner wall fixed connection of straight panel (23), first draw-in groove (31) have been seted up on the interior roof of fusion body (1) with first expansion plate (26) phase-match, the other end of straight panel (23) and the one end fixed connection of sloping block (24), the other end of sloping block (24) sets up to the inclined plane, the inclined plane end of sloping block (24) with prop against the one end of jack-prop (7), fusion hole (25) have been seted up on straight panel (23) and the outer wall of fusion post (6);

A chute (34) is formed in the inner wall of one end of the fusion body (1), the propping column (7) is slidably connected to the inside of the chute (34), a second expansion plate (27) is slidably connected to the side wall of the propping column (7), a second expansion spring (29) is fixedly arranged at one end of the second expansion plate (27), the other end of the second expansion spring (29) is fixedly connected with the inner side wall of the propping column (7), an inserting groove (32) is formed in the outer wall of one end of the propping column (7), a clamping hole (33) is formed in the inserting groove (32), and a second clamping groove (35) is formed in the inner side wall of the chute (34), and the second clamping groove (35) is matched with the second expansion plate (27);

A third expansion plate (36) is slidably connected to the inner wall of the bottom of the sliding frame (4), a third expansion spring (37) is fixedly arranged at one end of the third expansion plate (36), the other end of the third expansion spring (37) is fixedly connected with the inner wall of the sliding frame (4), a third clamping groove (38) is formed in the inner bottom wall of the fusion body (1), and the third clamping groove (38) is matched with the third expansion plate (36);

The utility model discloses a push screw, including installation body (2) and fixed connection, rotate on the lateral wall of installation body (2) one end and be connected with promotion lead screw (40), promote case (8) threaded connection and be in on the outer wall of promotion lead screw (40), install second spiral spring (43) on the outer wall of promotion lead screw (40) one end, the other end of second spiral spring (43) with the inner wall fixed connection who promotes case (8), the inside that promotes case (8) is provided with spliced pole (41), fixed mounting has plug-in piece (42) on the outer wall of spliced pole (41) one end, plug-in piece (42) with draw-in hole (33) assorted.

2. A porous interbody fusion cage according to claim 1, characterized in that the third fusion holes (39) are not in communication with the inner wall of the fusion body (1), the first fusion holes (10) are identical to the third fusion holes (39), and the number of the third fusion holes (39) and the second fusion holes (25) are plural.

3. A porous interbody fusion cage according to claim 2, characterized in that the number of drive shafts (14) is two, the two drive shafts (14) being drivingly connected by a drive belt (44).