CN208492405U - Single condyle knee-joint prosthesis - Google Patents
Single condyle knee-joint prosthesis Download PDFInfo
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- CN208492405U CN208492405U CN201721346500.6U CN201721346500U CN208492405U CN 208492405 U CN208492405 U CN 208492405U CN 201721346500 U CN201721346500 U CN 201721346500U CN 208492405 U CN208492405 U CN 208492405U
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- plate body
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- condyle
- tibial insert
- joint prosthesis
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Abstract
The utility model provides a kind of single condyle knee-joint prosthesis, comprising: condyle of femur, tibial insert and tibial plateau, condyle of femur have inner mold face and the first articular surface；Tibial insert has second joint face and bottom surface；Tibial plateau has upper and lower surfaces；Wherein, first articular surface of condyle of femur and the second joint face of tibial insert fit, the bottom surface of tibial insert and the upper surface of tibial plateau can relatively movably connect, there is position limiting structure, position limiting structure is used to limit the displacement between tibial insert and tibial plateau between the bottom surface of tibial insert and the upper surface of tibial plateau.So as to effectively prevent the dislocation of tibial insert, solve the problems, such as to be easy dislocation between the tibial insert and tibial plateau of movable platform type list condyle knee-joint prosthesis in the prior art.
Description
Technical field
The utility model relates to area of medical devices, in particular to a kind of single condyle knee-joint prosthesis.
Background technique
As Micro-traumatic concept is increasingly enhanced in clinic, single condylar-type knee-joint prosthesis is gradually relied by the parent of clinician.
Before the treatment when the osteoarthritis of inside, single condylar-type knee-joint prosthesis has apparent advantage.Such as wound is small, blood loss is few, operation
Time is short, patients ' recovery is fast etc..
Currently, single condylar-type knee-joint prosthesis mainly has two kinds of canonical forms of fixed platform and movable platform.Movable platform type
Single condyle knee-joint prosthesis is applied in clinic than wide, condyle of femur and tibial insert matched, tibial insert and shin bone
It is move freely between platform, greatly facilitates the installation in doctor's art, reduce polyethylene wear amount at a specified future date.The disadvantage is that due to
There is no any constraint between tibial insert and tibial plateau, be easy to happen the dislocation of tibial insert, once occur dislocation it is necessary into
Row second operation brings spiritual pain and economic loss for patient.
Utility model content
The main purpose of the utility model is to provide a kind of single condyle knee-joint prosthesis, to solve activity in the prior art
The problem of dislocation is easy between the tibial insert and tibial plateau of flatbed list condyle knee-joint prosthesis.
To achieve the goals above, the utility model provides a kind of single condyle knee-joint prosthesis, comprising: condyle of femur, femur
Condyle has inner mold face and the first articular surface；Tibial insert, tibial insert have second joint face and bottom surface；Tibial plateau, shin bone
Platform has upper and lower surfaces；Wherein, the first articular surface of condyle of femur and the second joint face of tibial insert fit, shin
The bottom surface of bone gasket and the upper surface of tibial plateau can relatively movably connect, the bottom surface of tibial insert and the upper table of tibial plateau
There is position limiting structure, position limiting structure is used to limit the displacement between tibial insert and tibial plateau between face.
Further, position limiting structure includes: limit stop post, is arranged on the upper surface of tibial plateau；Limiting groove opens up
In the bottom surface of tibial insert；Wherein, limit stop post is slideably embedded in limiting groove to limit tibial insert and tibial plateau
Between displacement.
Further, position limiting structure includes: limit stop post, and the bottom surface of tibial insert is arranged in；Limiting groove is provided with shin
On the upper surface of bone platform；Wherein, limit stop post is slideably embedded in limiting groove to limit tibial insert and tibial plateau
Between displacement.
Further, limiting groove is strip groove.
Further, condyle of femur includes: the first plate body, the second plate body and third plate body, the first plate body, the second plate body and
Three plate bodys are sequentially connected, and the first side of the first side of the first plate body, the first side of the second plate body and third plate body is total
With inner mold face is formed, the second side of the second side of the first plate body, the second side of the second plate body and third plate body is common
Form the first articular surface；Wherein, the second joint face of the second side of the second plate body and tibial insert is fitted and connected.
Further, the first side of the first side of the first plate body, the first side of the second plate body and third plate body
It is plane, there is the first default angle, the second plate body between the first side of the first plate body and the first side of the second plate body
First side and third plate body first side between have the second default angle.
Further, the first fixed hair is provided in the first side of the first plate body and the first side of the second plate body
Thorn.
Further, the first fixed burr in the first side of the first plate body and the first side of the second plate body is
It is multiple.
Further, fixed-wing is provided in the first side of third plate body.
Further, fixed-wing is wedge shape.
Further, the first articular surface is arcwall face, and second joint face is arcwall face compatible with the first articular surface.
Further, the second fixed burr is provided on the lower surface of tibial plateau.
Further, the second fixed burr is multiple.
Using single condyle knee-joint prosthesis of technical solutions of the utility model, comprising: condyle of femur, tibial insert and shin bone are flat
Platform, condyle of femur have inner mold face and the first articular surface；Tibial insert has second joint face and bottom surface；Tibial plateau has upper table
Face and lower surface；Wherein, the first articular surface of condyle of femur and the second joint face of tibial insert fit, the bottom surface of tibial insert
It can relatively movably be connect with the upper surface of tibial plateau, there is limit between the bottom surface of tibial insert and the upper surface of tibial plateau
Bit architecture, position limiting structure are used to limit the displacement between tibial insert and tibial plateau.So as to effectively prevent shin bone pad
The dislocation of piece is held between the tibial insert and tibial plateau for solving movable platform type list condyle knee-joint prosthesis in the prior art
The problem of easily dislocating.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
In the accompanying drawings:
Fig. 1 is according to a kind of optional structural schematic diagram of single condyle knee-joint prosthesis of the utility model embodiment；And
Fig. 2 is according to a kind of optional the schematic diagram of the section structure of single condyle knee-joint prosthesis of the utility model embodiment；
Fig. 3 is according to a kind of optional structural representation of the condyle of femur of single condyle knee-joint prosthesis of the utility model embodiment
Figure；
Fig. 4 is according to a kind of optional visual angle of the tibial insert of single condyle knee-joint prosthesis of the utility model embodiment
Structural schematic diagram；
Fig. 5 is according to a kind of optional another visual angle of the condyle of femur of single condyle knee-joint prosthesis of the utility model embodiment
Structural schematic diagram；And
Fig. 6 is according to a kind of optional structural representation of the tibial plateau of single condyle knee-joint prosthesis of the utility model embodiment
Figure.
Wherein, the above drawings include the following reference numerals:
10, condyle of femur；11, inner mold face；12, the first articular surface；13, the first plate body；14, the second plate body；15, third plate
Body；16, the first fixed burr；17, fixed-wing；20, tibial insert；21, second joint face；22, bottom surface；30, tibial plateau；
31, upper surface；32, lower surface；33, the second fixed burr；40, position limiting structure；41, limit stop post；42, limiting groove.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
According to single condyle knee-joint prosthesis of the utility model embodiment, as shown in Figures 1 to 6, comprising: condyle of femur 10, shin
Bone gasket 20 and tibial plateau 30, condyle of femur have inner mold face 11 and the first articular surface 12；Tibial insert 20 has second joint
Face 21 and bottom surface 22；Tibial plateau 30 has upper surface 31 and lower surface 32；Wherein, the first articular surface 12 and shin of condyle of femur 10
The second joint face 21 of bone gasket 20 fits, and the bottom surface 22 of tibial insert 20 and the upper surface 31 of tibial plateau 30 opposite can be moved
It connects dynamicly, there is position limiting structure 40, position limiting structure between the bottom surface 22 of tibial insert 20 and the upper surface 31 of tibial plateau 30
40 for limiting the displacement between tibial insert 20 and tibial plateau 30.
Using single condyle knee-joint prosthesis of technical solutions of the utility model, comprising: condyle of femur 10, tibial insert 20 and shin bone
Platform 30, condyle of femur 10 have inner mold face and the first articular surface；Tibial insert 20 has second joint face and bottom surface；Tibial plateau
30 have upper and lower surfaces；Wherein, the first articular surface of condyle of femur 10 fits with the second joint face of tibial insert 20,
The bottom surface of tibial insert 20 can relatively movably be connect with the upper surface of tibial plateau 30, and the bottom surface of tibial insert 20 and shin bone are flat
There is position limiting structure, position limiting structure is used to limit the displacement between tibial insert 20 and tibial plateau 30 between the upper surface of platform 30
Amount.So as to effectively prevent the dislocation of tibial insert 20, it is false to solve movable platform type list condyle knee joint in the prior art
The problem of dislocation is easy between the tibial insert 20 and tibial plateau 30 of body.
When it is implemented, as shown in Figure 2, Figure 3 and Figure 4, position limiting structure 40 includes: limit stop post 41 and limiting groove 42,
Limit stop post 41 is arranged on the upper surface 31 of tibial plateau 30；Limiting groove 42 is provided on the bottom surface 22 of tibial insert 20；
Wherein, limit stop post 41 is slideably embedded in limiting groove 42 to limit the displacement between tibial insert 20 and tibial plateau 30
Amount.Optionally, limiting groove 42 is strip groove, and limit stop post 41 is slided along the extending direction of limiting groove 42.
As another embodiment, limit stop post 41 also be can be set on the bottom surface 22 of the tibial insert 20, limit
Groove 42 is provided on the upper surface 31 of tibial plateau 30, and limit stop post 41 is slideably embedded in limiting groove 42 to limit shin
Displacement between bone gasket 20 and tibial plateau 30.
As shown in figure 5, condyle of femur 10 includes: the first plate body 13, the second plate body 14 and third plate body 15, the first plate body 13,
Second plate body 14 and third plate body 15 are sequentially connected, the first side of the first plate body 13, the first side of the second plate body 14 and
Inner mold face 11, second side of the second side of the first plate body 13, the second plate body 14 is collectively formed in the first side of third plate body 15
The first articular surface 12 is collectively formed in the second side of face and third plate body 15；Inner mold face 11 and the first articular surface 12 are condyle of femur
10 two opposite sides, the second side of the second plate body 14 are fitted and connected with the second joint face 21 of tibial insert 20.
Further, the of the first side of the first plate body 13, the first side of the second plate body 14 and third plate body 15
One side is plane, has the first default folder between the first side of the first plate body 13 and the first side of the second plate body 14
Angle has the second default angle between the first side of the second plate body 14 and the first side of third plate body 15.Specifically, first
Default angle and the second default angle are obtuse angle, so as to corresponding sclerotin form fit.
It is fixed to enable condyle of femur 10 to be firmly embedded into corresponding sclerotin, further, the first plate body 13
First side and the second plate body 14 first side on be provided with the first fixed burr 16, further, the first plate body
The first fixed burr 16 in 13 first side and the first side of the second plate body 14 is multiple.By beaing condyle of femur
First fixed burr 16 is embedded in corresponding sclerotin condyle of femur 10 is fixed by 10.
In order to enhance the anti-rotation function of condyle of femur 10, further, it is provided in the first side of third plate body 15 solid
Determine the wing 17, fixed-wing 17 is wedge shape.When beaing condyle of femur 10, fixed-wing 17 can be embedded in sclerotin together, due to fixed-wing 17
Wedge structure, can effectively prevent rotating after condyle of femur 10 is fixed.
As shown in figure 5, the first articular surface 12 is arcwall face, second joint face 21 is arc compatible with the first articular surface
Face, so that the first articular surface 12 and second joint face 21 be enable to be bonded completely.
In order to enable tibial plateau 30 to be preferably fixed on corresponding sclerotin, further, as shown in figure 3, shin bone
Be provided with the second fixed burr 33 on the lower surface 32 of platform 30, the second fixed burr 33 be it is multiple, by beaing tibial plateau
30, which can will be such that the second fixed burr 33 is embedded in corresponding sclerotin, fixes tibial plateau 30.
In process of clinical application, first fixed burr 16 and fixed-wing 17 are embedded in sclerotin by beaing condyle of femur 10,
First fixed burr 16 realizes uniform fixation, reduces the loss of bone amount, and fixed-wing 17 enhances the anti-rotation function of condyle of femur 10,
First articular surface 12 of 10 lower part of condyle of femur is bonded with the second joint face 21 on 20 top of tibial insert, forms joint-friction face,
The bottom surface 22 of tibial insert 20 is bonded with the upper surface 31 of tibial plateau 30, the limit stop post 41 of the upper surface 31 of tibial plateau 30
It is deep into the limiting groove 42 on the bottom surface 22 of tibial insert 20, it, can be by tibial plateau 30 by beaing tibial plateau 30
Lower surface 32 on the second fixed burr 33 be embedded into sclerotin, realize the fixation of tibial plateau 30.
After being installed, during the flexion-extension motion of condyle of femur 10, tibial insert 20 can be moved with condyle of femur 10,
Limit stop post 41 can prevent the support range of the abjection tibial plateau 30 of tibial insert 20.
In addition, in order to enable sclerotin preferably to grow into, further, the inner mold face 11 of condyle of femur 10 and tibial plateau 30
Lower surface 32 can be with sprayed biological coating material, such as pure titanium coating, hydroxyapatite coating layer etc..
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (13)
1. a kind of list condyle knee-joint prosthesis characterized by comprising
Condyle of femur (10), the condyle of femur have inner mold face (11) and the first articular surface (12)；
Tibial insert (20), the tibial insert (20) have second joint face (21) and bottom surface (22)；
Tibial plateau (30), the tibial plateau (30) have upper surface (31) and lower surface (32)；
Wherein, the second joint face of first articular surface (12) of the condyle of femur (10) and the tibial insert (20)
(21) it fits, the bottom surface (22) of the tibial insert (20) and the upper surface (31) of the tibial plateau (30) can
It relatively movably connects, the bottom surface (22) of the tibial insert (20) and the upper surface of the tibial plateau (30)
(31) there are position limiting structure (40) between, the position limiting structure (40) is flat for limiting the tibial insert (20) and the shin bone
Displacement between platform (30).
2. list condyle knee-joint prosthesis according to claim 1, which is characterized in that the position limiting structure (40) includes:
Limit stop post (41) is arranged on the upper surface (31) of the tibial plateau (30)；
Limiting groove (42) is provided with the bottom surface (22) of the tibial insert (20)；
Wherein, the limit stop post (41) is slideably embedded in the limiting groove (42) to limit the tibial insert (20)
With the displacement between the tibial plateau (30).
3. list condyle knee-joint prosthesis according to claim 1, which is characterized in that the position limiting structure (40) includes:
Limit stop post (41) is arranged in the bottom surface (22) of the tibial insert (20)；
Limiting groove (42) is provided on the upper surface (31) of the tibial plateau (30)；
Wherein, the limit stop post (41) is slideably embedded in the limiting groove (42) to limit the tibial insert (20)
With the displacement between the tibial plateau (30).
4. according to the described in any item single condyle knee-joint prosthesis of Claims 2 or 3, which is characterized in that the limiting groove (42)
For strip groove.
5. list condyle knee-joint prosthesis according to claim 1, which is characterized in that the condyle of femur (10) includes:
First plate body (13), the second plate body (14) and third plate body (15), first plate body (13), second plate body (14)
It is sequentially connected with the third plate body (15), the first of the first side of first plate body (13), second plate body (14)
The first side of side and the third plate body (15) is collectively formed the inner mold face (11), and the of first plate body (13)
The second side of two side faces, the second side of second plate body (14) and the third plate body (15) is collectively formed described
One articular surface (12)；
Wherein, the second joint face (21) of the second side of second plate body (14) and the tibial insert (20)
It is fitted and connected.
6. list condyle knee-joint prosthesis according to claim 5, which is characterized in that described the first of first plate body (13)
The first side of side, the first side of second plate body (14) and the third plate body (15) is flat
Face has first between the first side of first plate body (13) and the first side of second plate body (14)
Default angle, has between the first side of second plate body (14) and the first side of the third plate body (15)
There is the second default angle.
7. according to the described in any item single condyle knee-joint prosthesis of claim 5 or 6, which is characterized in that first plate body (13)
The first side and second plate body (14) the first side on be provided with first fixed burr (16).
8. list condyle knee-joint prosthesis according to claim 7, which is characterized in that described the first of first plate body (13)
Described first fixed burr (16) in the first side of side and second plate body (14) are multiple.
9. according to the described in any item single condyle knee-joint prosthesis of claim 5 or 6, which is characterized in that the third plate body (15)
The first side on be provided with fixed-wing (17).
10. list condyle knee-joint prosthesis according to claim 9, which is characterized in that the fixed-wing (17) is wedge shape.
11. list condyle knee-joint prosthesis according to claim 1, which is characterized in that first articular surface (12) is arc
Face, the second joint face (21) are arcwall face compatible with first articular surface.
12. list condyle knee-joint prosthesis according to claim 1, which is characterized in that the tibial plateau (30) it is described under
Second fixed burr (33) are provided on surface (32).
13. list condyle knee-joint prosthesis according to claim 12, which is characterized in that described second fixed burr (33) are more
It is a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721346500.6U CN208492405U (en) | 2017-10-18 | 2017-10-18 | Single condyle knee-joint prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721346500.6U CN208492405U (en) | 2017-10-18 | 2017-10-18 | Single condyle knee-joint prosthesis |
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| Publication Number | Publication Date |
|---|---|
| CN208492405U true CN208492405U (en) | 2019-02-15 |
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ID=65301796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721346500.6U Active CN208492405U (en) | 2017-10-18 | 2017-10-18 | Single condyle knee-joint prosthesis |
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| Country | Link |
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| CN (1) | CN208492405U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107616859A (en) * | 2017-10-18 | 2018-01-23 | 北京爱康宜诚医疗器材有限公司 | Single condyle knee-joint prosthesis |
| CN110013362A (en) * | 2019-04-26 | 2019-07-16 | 中国人民解放军联勤保障部队第九二〇医院 | A kind of high flexibility ratio is bionical all referring to joint replacement part |
| CN110013363A (en) * | 2019-04-26 | 2019-07-16 | 中国人民解放军联勤保障部队第九二〇医院 | A kind of bionical half articulations digitorum manus Replacement Part of high flexibility ratio |
-
2017
- 2017-10-18 CN CN201721346500.6U patent/CN208492405U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107616859A (en) * | 2017-10-18 | 2018-01-23 | 北京爱康宜诚医疗器材有限公司 | Single condyle knee-joint prosthesis |
| CN110013362A (en) * | 2019-04-26 | 2019-07-16 | 中国人民解放军联勤保障部队第九二〇医院 | A kind of high flexibility ratio is bionical all referring to joint replacement part |
| CN110013363A (en) * | 2019-04-26 | 2019-07-16 | 中国人民解放军联勤保障部队第九二〇医院 | A kind of bionical half articulations digitorum manus Replacement Part of high flexibility ratio |
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