CN107157629A - New vertebrae mixer - Google Patents
New vertebrae mixer Download PDFInfo
- Publication number
- CN107157629A CN107157629A CN201710454145.2A CN201710454145A CN107157629A CN 107157629 A CN107157629 A CN 107157629A CN 201710454145 A CN201710454145 A CN 201710454145A CN 107157629 A CN107157629 A CN 107157629A
- Authority
- CN
- China
- Prior art keywords
- expansion block
- scissors fork
- screw mandrel
- rod
- framework
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
Abstract
The invention discloses a kind of new vertebrae mixer, including upper expansion block, lower expansion block and expanded height adjustment portion, upper expansion block is arranged on the top of expanded height adjustment portion, lower expansion block is arranged on the bottom of expanded height adjustment portion, upper expansion block and lower expansion block are positioned opposite, and scissors fork chute is equipped with thereon；Expanded height adjustment portion includes framework, screw mandrel governor motion and scissors fork component, scissors fork component is 2, the rotating shaft of the two is fixedly connected by connecting rod, connecting rod is rotated with one end of screw mandrel governor motion by connector and is connected, one end of framework is provided with arced terminus, there is the mounting hole with being connected inside framework, the other end of screw mandrel governor motion is installed in rotation in mounting hole in arced terminus；2 scissors fork components are separately mounted to expand on the scissors fork chute of block and lower expansion block.The present invention has the advantages that small volume, simple in construction, adjustment height scope are big and are easy to operation.
Description
Technical field
The present invention relates to a kind of vertebrae mixer, particularly a kind of new Invasive lumbar fusion device.
Background technology
Lumbar intervertebral fusion is generally used for treating the illness such as degenerative lumbar and shakiness, can recover intervertebral height, expands
Intervertebral foramen, support front pillar and increase Fusion levels stability.Late 1970s have started the research of Invasive lumbar fusion device, after
The illnesss such as the change for the treatment of lumbar degenerative and lumbar instability are used to, this treatment method can not only recover the height of intervertebral,
Intervertebral foramen is expanded, while also enhancing the support of front pillar, the stability of Fusion levels is added.
Fusion needs to use Invasive lumbar fusion device between lumbar vertebrae cone, and cylindrical-shaped structure is used existing vertebrae mixer more, its
Main body is cylinder, is limited by cylindrical-shaped structure, and on the one hand its volume is larger, on the other hand easily occurs loosening and displacement,
Artificial bone grafting can not be also carried out in addition, the syncretizing effect with lumbar vertebrae is poor.
The content of the invention
It is an object of the invention to provide a kind of new vertebrae mixer, to solve deficiency of the prior art, it has body
Product is small, simple in construction, adjustment height scope is big and is easy to the advantage of operation.
The invention provides a kind of new vertebrae mixer, including upper expansion block, lower expansion block and expanded height adjustment portion,
The upper expansion block is arranged on the top of the expanded height adjustment portion, and the lower expansion block is adjusted installed in the expanded height
The bottom in portion, the upper expansion block and the lower expansion block are positioned opposite, and scissors fork chute is equipped with thereon；The expanded height
Adjustment portion includes framework, screw mandrel governor motion and scissors fork component, and the scissors fork component is 2, and the rotating shaft of the two passes through even
Extension bar is fixedly connected, and the connecting rod is rotated with one end of the screw mandrel governor motion by connector and is connected, the framework
One end is provided with the mounting hole having in arced terminus, the arced terminus with being connected inside the framework, and the screw mandrel adjusts machine
The other end of structure is installed in rotation in the mounting hole；2 scissors fork components are separately mounted to the upper expansion block
On the scissors fork chute of the lower expansion block.
In foregoing new vertebrae mixer, it is preferable that the complete phase of structure of the upper expansion block and the lower expansion block
Together, including plate body and side plate is oriented to, one piece of guiding side is set respectively along its 2 long sides in the plate face of the plate body side
Plate, 2 pieces of described are oriented on the inwall of side plate are respectively equipped with a scissors fork chute, 2 pieces of outer walls for being oriented to side plate point
Inwall not with 2 long sides in the framework is slidably connected.
In foregoing new vertebrae mixer, it is preferable that the scissors fork component includes roller and length identical first
The body of rod and second body of rod, the middle part of first body of rod is rotated by the connecting shaft with the middle part of second body of rod to be connected,
The roller is provided with by rotating shaft on the outer wall on the outer wall at first body of rod two ends and second body of rod two ends；Institute
State scissors fork chute to be made up of roller mounting slot and rotating shaft mounting groove, the roller is arranged in the roller mounting slot, described
Rotating shaft is connected through the rotating shaft mounting groove with the roller.
In foregoing new vertebrae mixer, it is preferable that the plate face of the plate body is provided with tapered protrusion and bone grafting groove, institute
Length direction arrangement of the bone grafting groove along the plate body is stated, the equal spaced set of bone grafting groove of arbitrary neighborhood 2, the taper is convex
Rise and be distributed on region on the plate body in addition to the bone grafting groove.
In foregoing new vertebrae mixer, it is preferable that the vertex of a cone of the tapered protrusion is hemispherical dome structure.
In foregoing new vertebrae mixer, it is preferable that the connector includes axle sleeve and connection frame, the connection frame is
U-shaped, its end is fixedly connected with the outer wall of the axle sleeve, and the two is to have screw mandrel peace on integral type structure, the connection frame
Hole is filled, the axle sleeve is arranged on the middle part of the connecting rod, the two interference fit；The screw mandrel governor motion include outer tube and
Leading screw, the outer tube has internal thread, and one end of the leading screw is connected through a screw thread with the outer tube, and the other end is plugged on
In the screw mandrel mounting hole, and carried out by nut spacing, the end is additionally provided with postive stop baffle, the postive stop baffle and the connection
The outer wall of frame is abutted against, and the inwall of the nut and the connection frame is abutted against.
In foregoing new vertebrae mixer, it is preferable that the one end of the outer tube away from the screw mandrel is plugged on described
In mounting hole, the outer wall at the end is provided with the first spacing ring and the second spacing ring, correspondingly, is provided with and institute in the arced terminus
State the first limited impression and the second limited impression that the first spacing ring and second spacing ring coordinate, first limited impression
The diameter of first spacing ring and second spacing ring is all higher than with the diameter of second limited impression.
In foregoing new vertebrae mixer, it is preferable that the end of one end that the outer tube is engaged with the mounting hole
Portion is provided with interior hexagonal groove.
In foregoing new vertebrae mixer, it is preferable that also including two groups of guide rods, guide rod described in two groups is respectively arranged on
The both sides of the connector；Guide rod described in every group is two, and two guide rods be arranged in parallel in the horizontal direction, respectively position
Above and below the connecting rod, the two ends of two guide rods are separately fixed at the interior of two short sides of the framework
On wall.
Compared with prior art, the invention provides a kind of new vertebrae mixer, frame structure is integrally used, is provided with
Upper expansion block and lower expansion block, can effectively solve the problem that in the prior art easily loosening by upper expansion block and lower expansion block and produce
The shortcoming of displacement.This case pitches structure with the cooperation of screw mandrel governor motion to realize upper expansion block and lower expansion tile height using scissors
Regulation, greatly simplifie interiors of products structure, reduce the difficulty of manufacturing process, reduce manufacturing cost, and use the knot
Structure is easy to operation.
By being provided with tapered protrusion and bone grafting groove in the plate face of plate body, the stability of product on the one hand can be improved, is prevented
Only its slip is released, and the design of another aspect bone grafting groove can load substantial amounts of bone grafting, makes bone grafting and the sclerotin of centrum preferably
Fusion.
Brief description of the drawings
Fig. 1 is integrally-built axonometric drawing of the invention；
Fig. 2 is the axonometric drawing of expanded height adjustment portion；
Fig. 3 is the axonometric drawing of upper expansion block 1 and lower expansion block 2；
Fig. 4 is the sectional view of upper expansion block；
Fig. 5 is the axonometric drawing that screw mandrel governor motion and scissors pitch component；
Fig. 6 is the sectional view enlarged drawing of partial structurtes.
Description of reference numerals：Expanded on 1- and block is expanded under block, 2-, 3- expanded height adjustment portions, 4- scissors fork chute, 5- frames
Body, 6- screw mandrel governor motions, 7- scissors fork component, 8- connecting rods, 9- connectors, 10- arced terminus, 11- mounting holes, 12- plates
Body, 13- is oriented to side plate, the bodies of rod of 14- first, the bodies of rod of 15- second, 16- rollers, 17- rotating shafts, 18- roller mounting slots, 19- rotating shafts
Mounting groove, 20- tapered protrusions, 21- bone grafting grooves, 22- axle sleeves, 23- connection frames, 24- screw mandrel mounting holes, 25- outer tubes, 26-
Thick stick, 27- nuts, 28- postive stop baffles, the spacing rings of 29- first, the spacing rings of 30- second, the limited impressions of 31- first, 32- second is limited
Hexagonal groove, 34- guide rods, 35- scales in position groove, 33-.
Embodiment
The embodiments described below with reference to the accompanying drawings are exemplary, is only used for explaining the present invention, and can not be construed to
Limitation of the present invention.
Embodiments of the invention：As shown in Figure 1, Figure 2 and Figure 3, a kind of new vertebrae mixer, including it is upper expansion block 1, under
Block 2 and expanded height adjustment portion 3 are expanded, upper expansion block 1 is arranged on the top of expanded height adjustment portion 3, and lower expansion block 2 is arranged on
The bottom of expanded height adjustment portion 3, upper expansion block 1 and lower expansion block 2 are positioned opposite, and scissors fork chute 4 is equipped with thereon；Expansion
Height adjusting part 3 includes framework 5, screw mandrel governor motion 6 and scissors fork component 7, and scissors fork component 7 is 2, and the rotating shaft of the two is led to
Cross connecting rod 8 to be fixedly connected, connecting rod 8 is rotated with one end of screw mandrel governor motion 6 by connector 9 and is connected, one end of framework 5
There is the mounting hole 11 connected with the inside of framework 5 provided with arced terminus 10, in arced terminus 10, screw mandrel governor motion 6 it is another
End is installed in rotation in mounting hole 11；2 scissors fork components 7 are separately mounted to expand the scissors of block 1 and lower expansion block 2
Pitch on chute 4.
Specifically, after the present invention is in place, specific purpose tool (be prior art, figure not shown in) rotary screw rod is passed through
One end of governor motion 6, by adjusting regulation of the length realization of screw mandrel governor motion 6 to the position of connecting rod 8, when connecting rod 8
During to close to the movement of the direction of arced terminus 10, scissors fork component 7 is opened, and expansion block 1 and lower expansion block 2 is separated each other,
Until upper expansion block 1 and lower expansion block 2 are tightly abutted with vertebra, stop the rotation screw mandrel governor motion 6.When needs send out this
It is bright only to rotate backward screw mandrel governor motion 6 when being removed out of human body, connecting rod 8 is moved to the direction away from arced terminus 10
It is dynamic, scissors is pitched component 7 and shrink, then upper expansion block 1 and lower expansion block 2 just can be retracted in framework 5, just can be by the present invention from human body
It is interior to take out.
Cooperated using scissors fork component 7 with screw mandrel governor motion 6, the structure of framework 5 is greatly simplified, without setting
The moulding and type face for putting complexity just can realize expansion block 1 and the lower separation for expanding block 2 and close, be effectively simplified internal junction
Structure, reduces manufacture difficulty, and can reserve bigger space for bone grafting groove, can be put into more bone graftings, improve fusion
Effect.
Specifically, as shown in figure 3, upper expansion block 1 is identical with the structure of lower expansion block 2, including plate body 12 and leading
To side plate 13, one piece is set to be oriented to 13,2 blocks of guiding side plates 13 of side plate respectively along its 2 long sides in the plate face of the side of plate body 12
Inwall of the outer wall of scissors fork 4,2 blocks of guiding side plate 13 of chute respectively with 2 long sides in framework 5 is respectively equipped with inwall to slide
Dynamic connection.In order to improve slip precision, it is preferable that longitudinally disposed guide protrusions on side plate 13 can also be oriented to, in framework 5
Guide groove is set on the inwall on long side, and being so oriented to can be more smooth when the in the vertical direction of side plate 13 is slided, and prevents clamping stagnation.Plate
The plate face of body 12 is provided with tapered protrusion 20 and bone grafting groove 21, length direction arrangement of the bone grafting groove 21 along plate body 12, arbitrary neighborhood 2
The equal spaced set of individual bone grafting groove 21, tapered protrusion 20 is distributed on the region in addition to bone grafting groove 21 on plate body 12.
Because this case drives upper expansion block 1 and lower expansion block 2 to move using scissors fork component 7, therefore the inside of framework 5
With substantial amounts of space, as shown in figure 3, when bone grafting groove 21 is set preferably, can be by the bottom design of bone grafting groove 21
Ratio plate body 12 bottom surface it is lower, can so load more bone graftings, effectively improve syncretizing effect.In order to prevent tapered protrusion
20 pairs of vertebras cause damage, and the vertex of a cone of tapered protrusion 20 preferably, is designed as hemispherical dome structure by this case.
Further, as shown in figure 5, above-mentioned scissors fork component 7 includes roller 16 and the He of first body of rod of length identical 14
Second body of rod 15, the middle part of first body of rod 14 is rotated by connecting shaft with the middle part of second body of rod 15 to be connected, first 14 liang of the body of rod
Roller 16 is provided with by rotating shaft 17 on the outer wall on the outer wall at the end and two ends of second body of rod 15；As shown in figure 4, scissors fork is slided
Groove 4 is made up of roller mounting slot 18 and rotating shaft mounting groove 19, and roller mounting slot 18 and rotating shaft mounting groove 19 constitute side
"convex" shaped groove, roller 16 is arranged in roller mounting slot 18, and rotating shaft 17 is connected through rotating shaft mounting groove 19 with roller 16.
Further, as shown in fig. 6, above-mentioned connector 9 includes axle sleeve 22 and connection frame 23, connection frame 23 is U-shaped,
Its end is fixedly connected with the outer wall of axle sleeve 22, and the two is to have screw mandrel mounting hole 24, axle sleeve on integral type structure, connection frame 23
22 are arranged on the middle part of connecting rod 8, the two interference fit；Screw mandrel governor motion 6 includes outer tube 25 and leading screw 26, outer tube 25
With internal thread, one end and the outer tube 25 of leading screw 26 are connected through a screw thread, and the other end is plugged in screw mandrel mounting hole 24, and is led to
Cross nut 27 and carry out spacing, the end is additionally provided with postive stop baffle 28, and postive stop baffle 28 is abutted against with being connected the outer wall of frame 23, nut 27
Abutted against with the inwall for being connected frame 23.The one end of outer tube 25 away from screw mandrel 26 is plugged in mounting hole 11, on the outer wall at the end
Provided with the first spacing ring 29 and the second spacing ring 30, correspondingly, in arced terminus 10 it is provided with and the first spacing ring 29 and the second limit
The first limited impression 31 and the second limited impression 32 that position ring 30 coordinates, the first limited impression 31 and the second limited impression 32 it is straight
Footpath is all higher than the diameter of the first spacing ring 29 and the second spacing ring 30.The end of one end that outer tube 25 is engaged with mounting hole 11
Provided with interior hexagonal groove 33.
In order to improve the accuracy of the movement locus of connecting rod 8, it is preferable that as shown in Fig. 2 also include two groups of guide rods 34,
Two groups of guide rods 34 are respectively arranged on the both sides of connector 9；Every group of guide rod 34 is two, and two guide rods 34 are put down in the horizontal direction
Row is set, and respectively above and below connecting rod 8, the two ends of two guide rods 34 are separately fixed at the two short of framework 5
On the inwall on side.
It is preferably carried out in one kind in mode, is additionally provided with scale 35 as shown in figure 3, being oriented on the outer wall of side plate 13, arbitrarily
The distance between adjacent 2 graduation marks are 1mm, per 5mm one numeral of mark, wherein 0 scale is located at close to the side of plate body 12.
Using this structure design doctor can be made to can be clearly seen what plate body 12 stretched out out of expanded height adjustment portion 3 by endoscope
Highly, the total height of the convenient control present invention, improves operation precision.Moreover it is preferred that outer tube 25, plate body for each revolution
12 are raised and lowered 1mm.
Construction, feature and the action effect of the present invention, above institute is described in detail according to the embodiment shown in schema above
Only presently preferred embodiments of the present invention is stated, but the present invention is not to limit practical range shown in drawing, it is every according to structure of the invention
Want made change, or be revised as the equivalent embodiment of equivalent variations, still without departing from specification with illustrating during covered spirit,
All should be within the scope of the present invention.
Claims (9)
1. a kind of new vertebrae mixer, including upper expansion block (1), lower expansion block (2) and expanded height adjustment portion (3), described
Upper expansion block (1) is arranged on the top of the expanded height adjustment portion (3), and it is high that the lower expansion block (2) is arranged on the expansion
Spend the bottom of adjustment portion (3), it is characterised in that：The upper expansion block (1) and the lower expansion block (2) are positioned opposite, thereon
Provided with scissors fork chute (4)；The expanded height adjustment portion (3) includes framework (5), screw mandrel governor motion (6) and scissors fork group
Part (7), the scissors fork component (7) is 2, and the rotating shaft of the two is fixedly connected by connecting rod (8), and the connecting rod (8) is led to
Cross connector (9) to be connected with one end rotation of the screw mandrel governor motion (6), one end of the framework (5) is provided with arced terminus
(10), there is the mounting hole (11) with being connected inside the framework (5), the screw mandrel governor motion on the arced terminus (10)
(6) the other end is installed in rotation in the mounting hole (11)；2 scissors fork components (7) are separately mounted to described
On the scissors fork chute (4) of upper expansion block (1) and the lower expansion block (2).
2. new vertebrae mixer according to claim 1, it is characterised in that：The upper expansion block (1) and the lower expansion
The structure for opening block (2) is identical, including plate body (12) and guiding side plate (13), edge in the plate face of plate body (12) side
Its 2 long sides set one piece of described is oriented on side plate (13), the inwall of 2 pieces of guiding side plates (13) to be respectively equipped with one respectively
The scissors fork chute (4), inwall of 2 pieces of outer walls for being oriented to side plate (13) respectively with the upper 2 long sides of the framework (5) is slided
Dynamic connection.
3. new vertebrae mixer according to claim 1 or 2, it is characterised in that：The scissors fork component (7) includes rolling
(16) and the body of rod of length identical first (14) and second body of rod (15) are taken turns, the middle part of first body of rod (14) passes through the company
Spindle is rotated with the middle part of second body of rod (15) and is connected, with second bar on the outer wall at first body of rod (14) two ends
The roller (16) is provided with by rotating shaft (17) on the outer wall at body (15) two ends；The scissors fork chute (4) is pacified by roller
Tankage (18) and rotating shaft mounting groove (19) composition, the roller (16) are arranged in the roller mounting slot (18), the rotating shaft
(17) it is connected through the rotating shaft mounting groove (19) with the roller (16).
4. new vertebrae mixer according to claim 2, it is characterised in that：The plate face of the plate body (12) is provided with cone
Shape projection (20) and bone grafting groove (21), length direction arrangement of the bone grafting groove (21) along the plate body (12), arbitrary neighborhood 2
The bone grafting groove (21) spaced set, the tapered protrusion (20), which is distributed on the plate body (12), removes the bone grafting groove
(21) region beyond.
5. new vertebrae mixer according to claim 4, it is characterised in that：The vertex of a cone of the tapered protrusion (20) is half
Spherical structure.
6. new vertebrae mixer according to claim 1, it is characterised in that：The connector (9) includes axle sleeve (22)
With connection frame (23), the connection frame (23) is U-shaped, and its end is fixedly connected with the outer wall of the axle sleeve (22), and the two is
There is screw mandrel mounting hole (24), the axle sleeve (22) is arranged on the connecting rod (8) on integral structure, the connection frame (23)
Middle part, the two interference fit；The screw mandrel governor motion (6) includes outer tube (25) and leading screw (26), the outer tube
(25) there is internal thread, one end and the outer tube (25) of the leading screw (26) are connected through a screw thread, and the other end is plugged on institute
State in screw mandrel mounting hole (24), and it is spacing by nut (27) progress, and the end is additionally provided with postive stop baffle (28), the postive stop baffle
(28) outer wall with the connection frame (23) is abutted against, and the inwall of the nut (27) and the connection frame (23) is abutted against.
7. new vertebrae mixer according to claim 6, it is characterised in that：The outer tube (25) is away from the screw mandrel
(26) one end is plugged in the mounting hole (11), and the outer wall at the end is provided with the first spacing ring (29) and the second spacing ring
(30), correspondingly, it is provided with and matches somebody with somebody with first spacing ring (29) and second spacing ring (30) in the arced terminus (10)
The first limited impression (31) and the second limited impression (32) closed, first limited impression (31) and second limited impression
(32) diameter is all higher than the diameter of first spacing ring (29) and second spacing ring (30).
8. the new vertebrae mixer according to claim 6 or 7, it is characterised in that：The outer tube (25) and the peace
The end of one end that dress hole (11) is engaged is provided with interior hexagonal groove (33).
9. new vertebrae mixer according to claim 1, it is characterised in that：Also include two groups of guide rods (34), two groups
The guide rod (34) is respectively arranged on the both sides of the connector (9)；Guide rod (34) described in every group is two, is led described in two
It is be arranged in parallel in the horizontal direction to bar (34), respectively above and below the connecting rod (8), two guide rods
(34) two ends are separately fixed on the inwall of two short sides of the framework (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454145.2A CN107157629A (en) | 2017-06-15 | 2017-06-15 | New vertebrae mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454145.2A CN107157629A (en) | 2017-06-15 | 2017-06-15 | New vertebrae mixer |
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| Publication Number | Publication Date |
|---|---|
| CN107157629A true CN107157629A (en) | 2017-09-15 |
Family
ID=59818820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710454145.2A Pending CN107157629A (en) | 2017-06-15 | 2017-06-15 | New vertebrae mixer |
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| CN105902327A (en) * | 2016-04-05 | 2016-08-31 | 广州爱锘德医疗器械有限公司 | Centrum fusion device |
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