CN2788752Y - Micro-moving spinal artificial joint fixing device - Google Patents
Micro-moving spinal artificial joint fixing device Download PDFInfo
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- CN2788752Y CN2788752Y CN 200520002656 CN200520002656U CN2788752Y CN 2788752 Y CN2788752 Y CN 2788752Y CN 200520002656 CN200520002656 CN 200520002656 CN 200520002656 U CN200520002656 U CN 200520002656U CN 2788752 Y CN2788752 Y CN 2788752Y
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- fine motion
- ball
- artificial joint
- rod
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Abstract
The utility model relates to a micro-moving spinal artificial joint fixing device which has the advantages of simple structure and can be used for micro-movement of the front position or the back position of spine. The utility model comprises a connecting upper rod, a connecting lower rod and a fixing screw, wherein one end of the connecting upper rod is provided with a through hole, and the other end is provided with a ball containing body; one end of the connecting lower rod is provided with a through hole, and the other end is provided with a ball collecting body; the ball collecting body is clamped in the ball containing body; the fixing screw is respectively penetrated in the through holes of the connecting upper rod and the connecting lower rod, a hollow part is formed in the fixing screw, and the radial direction is provided with a plurality of holes; by the ball containing body and the ball collecting body, patients can slightly move after provided with the spinal fixing device; when the fixing screw is arranged on a joint bone of the spine, marrow in the joint bone can infiltrate the hollow part and the holes, and thus, a fixing effect between the fixing screw and the joint bone is steady.
Description
[technical field]
This utility model is about a kind of vertebra artificial joint fixture, refers to a kind of active a little fine motion vertebra artificial joint fixture of carrying out especially.
[background technology]
Human health is that each the position skeleton by inside of human body is supported, make muscle, blood vessel on the human body can not be stacked because of the effect of gravity, in the skeleton of human body, vertebra is most important position, and it is to extend downward a burst portion by the medulla oblongata position, contains most neural in vertebra, and form by most vertebra joint bone serial connections, when the joint bone of any joint wherein produces displacement, just can cause human body inconvenience in the action, in addition throughout one's life irremovable sorry.
General vertebra joint bone employed fixture when displacement is corrected, announce No. 250680 " inside fixing reset unit for vertebra ", bulletin No. 292540 " vertebra auxiliary fixing device " etc. as TaiWan, China, mostly have one and connect the connecting rod that respectively saves bone of vertebra and connecting rod is assembled in the retaining element that respectively saves on the bone, this retaining element includes fixed screw and assembly usually.
Please referring to shown in Fig. 8,9, the spinal fixing device of commonly using includes:
Connecting rod (70), it is one metal, rod-shaped, can situation need make the straight-bar structure or have the knee structure of radian;
Assembly (71) is arranged on the block at connecting rod (70) two ends, and the one end is provided with the assembly hole (710) that wears for connecting rod (70), is provided with and the axial fixing hole (711) of orthogonal of assembly hole (710) in the sidewall of assembly hole (710); End is provided with and the axially fixedly perforation (712) of orthogonal of assembly hole (710) in addition;
Set screw (72), the fixing hole (711) that is arranged on assembly (71) is located, by this with packing connecting rod (70) with the fixing relative position of assembly (71) and connecting rod (70);
Fixed screw (73), it is to run through the solid screw that the fixedly perforation (712) that is arranged on assembly (71) is located.
Above-mentioned spinal fixing device in use, it is the relative position that utilizes set screw (72) location assembly (71) and connecting rod (70) earlier, after utilizing fixed screw (73) to run through the fixedly perforation (712) of assembly (71) again, spiral shell is solid on joint bone (80) again, after yet in case spinal fixing device is installed in inside of human body, because connecting rod (70) is to belong to rigid bar and be bent with predetermined curvature according to patient's condition of illness in advance, can't be again after fixing carrying out any bending action with respect to joint bone (80) makes its fusion can be successful, because of last, following joint is fixed and can't moves, not only user inconvenience in the action, and can cause and save vertebra up and down and be easy to generate early stage degeneration, produce disease once more.
Can't comply with the action of user finely tunes for the connecting rod (70) that solves above-mentioned spinal fixing device, therefore just the someone proposes TaiWan, China and announces No. 561877 " structural improvement of vertebra fixer " and United States Patent (USP) 6241730B1 number, though it can allow and respectively save the relative motion of carrying out between bone a little, but complex structure, make and assemble and be difficult for, cause the cost of spinal fixing device to reduce, moreover, the fixed screw of its use is still possibly because the action of user, and and produce loosening situation between each joint bone, cause the fixed effect of vertebra not good.
[utility model content]
Using and structural various shortcoming because commonly use various vertebra artificial joint fixture, it is a kind of simple in structure that the purpose of this utility model is to provide, and after can making that vertebra anteposition or position, back fixture are set up in vertebra patient inherence, still can carry out active a little fine motion vertebra artificial joint fixture.
In order to reach above-mentioned utility model purpose, this utility model adopts following technological means:
A kind of fine motion vertebra artificial joint fixture, it is characterized in that: it comprises:
Connect upper boom, this connection upper boom is a vertical bar body of rod, and Yu Yiduan is provided with perforation, and end is provided with hollow and ostiolate ball appearance body in addition, and this ball holds body interior sidewall surface and is provided with lubricating layer;
Connect lower beam, this connection lower beam is a vertical bar body of rod, and Yu Yiduan is provided with perforation, and end is provided with the opening big chou body of external diameter than this ball appearance body in addition, and this chou body clip holds in the body at the ball of this hollow;
Fixed screw is to run through respectively in the perforation that is arranged on this connection upper boom and connects lower beam, and this fixed screw inside is formed with the hollow bulb of hollow, and this fixed screw directly upwards is provided with several holes.
Described fine motion vertebra artificial joint fixture, it is characterized in that: this hole is the through hole that runs through fixed screw.
Described fine motion vertebra artificial joint fixture, it is characterized in that: this hole is the shrinkage pool that does not run through fixed screw.
Described fine motion vertebra artificial joint fixture, it is characterized in that: be provided with the connection king-rod between this connection upper boom and the connection lower beam, one end of this connection king-rod is provided with the chou body that the ball that is inserted in this connection upper boom holds body, and the other end of this connection king-rod then is provided with the ball that plugs for the chou body that connects lower beam and holds body.
Described fine motion vertebra artificial joint fixture is characterized in that: this lubricating layer is the minimum coat of metal of coefficient of friction.
Described fine motion vertebra artificial joint fixture, it is characterized in that: this lubricating layer material is a Teflon.
Described fine motion vertebra artificial joint fixture is characterized in that: fine motion angle relative between this connection upper boom and connection lower beam is the scope to patient the place ahead 10 degree, rear 5 degree.
By the mutual activity between ball appearance body and the chou body, make the patient behind the installing spinal fixing device, still can carry out activity a little, and utilize fixed screw with hollow bulb and hole, make when fixed screw is located on the joint bone of vertebra, the bone marrow of joint in the bone infiltrates in hollow bulb and the hole, and allows fixed screw and the fixed effect that saves between bone can be more firm.
[description of drawings]
Fig. 1 is the first embodiment axonometric chart of the present utility model.
Fig. 2 is the three-dimensional exploded view of this utility model first embodiment.
Fig. 3 is the user mode axonometric chart of this utility model first embodiment when being used in the vertebra anteposition.
Fig. 4 is the user mode profile of this utility model first embodiment when being used in the vertebra anteposition.
Fig. 5 is another user mode profile of this utility model first embodiment.
Fig. 6 is the user mode profile again of this utility model first embodiment.
Fig. 7 is the three-dimensional exploded view of this utility model second embodiment.
Fig. 8 is a three-dimensional exploded view of commonly using structure.
Fig. 9 is the user mode axonometric chart when commonly using structure and being used in the vertebra anteposition.
[specific embodiment]
This utility model is the fine motion vertebra artificial joint fixture that can be used in vertebra anteposition (as shown in Figure 5) or position, back (as shown in Figure 6), its occupation mode is identical, for avoiding repeat specification, now please referring to shown in Fig. 1,2,4, embodiment when being used in the vertebra anteposition for this utility model, it includes:
Connect upper boom (10), it is a vertical bar body of rod, and Yu Yiduan is provided with perforation (100), and end is provided with the ball appearance body (102) of hollow and tool opening (101) in addition, and this ball holds body (102) interior sidewall surface and is provided with lubricating layer (103);
Connect lower beam (11), it is a vertical bar body of rod, and Yu Yiduan is provided with perforation (110), and end is provided with external diameter holds body (102) than ball the big chou body (111) of opening in addition;
Fixed screw (12), be to run through respectively to be arranged in the perforation (100) that connects upper boom (10) and connect lower beam (11), (110), and inside is formed with the hollow structure of hollow bulb (120), and it directly upwards is provided with several holes of running through or not running through fixed screw (12) (121).
In addition, above-mentioned connection upper boom (10), connect lower beam (11) when assembling be not in order to limit its assembling position on ShiShimonoseki be only to be that the upper-lower position represented with drawing is conveniently to describe the element of indication.
The above-mentioned lubricating layer (103) that is arranged on ball appearance body (102) inboard that connects upper boom (10) is the minimum coat of metal of coefficient of friction, and its material can not make human body produce the coat of metal that repels effect as Teflon or other.
This utility model is when assembling, at first be that the chou body (111) that will connect lower beam (11) plugs in the ball appearance body (102) of connection upper boom (10), because it is bigger that the external diameter of chou body (111) holds body (102) than ball, therefore chou body (111) can hold in the body (102) at the ball of hollow by clip, and the connection lower beam (11) of chou body (111) can carry out moving a little in ball holds the opening scope of body (102).
Referring to Fig. 3, shown in 4, this utility model in use, as long as fixed screw (12) passed the connection upper boom (10) that finishes of assembling respectively and connects perforation (100) (110) on the lower beam (11), again the solid joint bone (20) at vertebra of fixed screw (12) spiral shell is gone up and got final product, because fixed screw of the present utility model (12) has hollow bulb (120) and hole (121), when therefore being assembled on the joint bone (20), bone marrow fluid and bone marrow matter in the joint bone (20) can penetrate in hollow bulb (120) and hole (121), allow the fixed screw (12) and the fixed effect of each joint bone (20) be promoted.
Please referring to shown in Figure 5, this utility model can hold the openings of sizes on the body (102) by the ball that connects upper boom (10), relative fine motion angle between control connection upper boom (10) and connection lower beam (11), this fine motion angle the best are the scope to patient the place ahead 10 degree, rear 5 degree.
Again please referring to shown in Figure 7, this creation can be provided with between connection upper boom (10) and connection king-rod (11) and connect king-rod (13), one end of this connection king-rod (13) is provided with and can be inserted in the chou body (130) that the ball that connects upper boom (10) holds body (102), the other end then is provided with and can holds body (131) for the ball that the chou body (111) that connects lower beam (11) plugs, and makes this utility model can be used for fixing more knotty joint bone by connecting upper boom (10), connect king-rod (13) and connecting lower beam (11).
And for example shown in Figure 5, when this utility model uses, when if the intervertebral disc of due to illness suffering from necrosis needs be provided with artificial intervertebral disk (30) between each vertebral segments, then this utility model not only can the fine motion mode be kept the stable position between each vertebral segments, can prevent that more artificial intervertebral disk (30) is subjected to displacement between vertebral segments, that is can increase the service life of artificial intervertebral disk (30); And artificial intervertebral disk (30) is widely used for commonly using device, is not main purpose of the present utility model, so repeat no more.
Claims (7)
1, a kind of fine motion vertebra artificial joint fixture, it is characterized in that: it comprises:
Connect upper boom, this connection upper boom is a vertical bar body of rod, and Yu Yiduan is provided with perforation, and end is provided with hollow and ostiolate ball appearance body in addition, and this ball holds body interior sidewall surface and is provided with lubricating layer;
Connect lower beam, this connection lower beam is a vertical bar body of rod, and Yu Yiduan is provided with perforation, and end is provided with the opening big chou body of external diameter than this ball appearance body in addition, and this chou body clip holds in the body at the ball of this hollow;
Fixed screw is to run through respectively in the perforation that is arranged on this connection upper boom and connects lower beam, and this fixed screw inside is formed with the hollow bulb of hollow, and this fixed screw directly upwards is provided with several holes.
2, fine motion vertebra artificial joint fixture as claimed in claim 1, it is characterized in that: this hole is the through hole that runs through fixed screw.
3, fine motion vertebra artificial joint fixture as claimed in claim 1, it is characterized in that: this hole is the shrinkage pool that does not run through fixed screw.
4, fine motion vertebra artificial joint fixture as claimed in claim 1, it is characterized in that: be provided with the connection king-rod between this connection upper boom and the connection lower beam, one end of this connection king-rod is provided with the chou body that the ball that is inserted in this connection upper boom holds body, and the other end of this connection king-rod then is provided with the ball that plugs for the chou body that connects lower beam and holds body.
5, as claim 1 or 2 or 3 or 4 described fine motion vertebra artificial joint fixtures, it is characterized in that: this lubricating layer is the minimum coat of metal of coefficient of friction.
6, fine motion vertebra artificial joint fixture as claimed in claim 5, it is characterized in that: this lubricating layer material is a Teflon.
7, fine motion vertebra artificial joint fixture as claimed in claim 5 is characterized in that: fine motion angle relative between this connection upper boom and connection lower beam is the scope to patient the place ahead 10 degree, rear 5 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520002656 CN2788752Y (en) | 2005-01-19 | 2005-01-19 | Micro-moving spinal artificial joint fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520002656 CN2788752Y (en) | 2005-01-19 | 2005-01-19 | Micro-moving spinal artificial joint fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2788752Y true CN2788752Y (en) | 2006-06-21 |
Family
ID=36789092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520002656 Expired - Fee Related CN2788752Y (en) | 2005-01-19 | 2005-01-19 | Micro-moving spinal artificial joint fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2788752Y (en) |
-
2005
- 2005-01-19 CN CN 200520002656 patent/CN2788752Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060621 Termination date: 20100219 |