CN208492402U - A kind of artificial knee joint prosthesis - Google Patents
A kind of artificial knee joint prosthesis Download PDFInfo
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- CN208492402U CN208492402U CN201720870390.7U CN201720870390U CN208492402U CN 208492402 U CN208492402 U CN 208492402U CN 201720870390 U CN201720870390 U CN 201720870390U CN 208492402 U CN208492402 U CN 208492402U
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- knee joint
- artificial knee
- joint prosthesis
- tibial insert
- compact part
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Abstract
The utility model discloses a kind of artificial knee joint prosthesis.The artificial knee joint prosthesis includes lateral femoral condyle prosthesis, tibial insert and tibia support prosthese, tibial insert is between lateral femoral condyle prosthesis and tibia support prosthese, tibia support prosthese includes matter compact part and the porous portion positioned at matter compact part bottom, one is made in matter compact part and porous portion 3D printing, the bottom of porous portion further includes having two lateral columns and a center projections, and matter compact part extend into the inside of lateral column and center projections；Porous portion is the loose face of multilayer, and every layer of loose face is equipped with multiple microcellular structures, and the porosity in each loose face of layer is sequentially increased from inside to outside.The utility model quick manufacture of intraocular knee joint by way of 3D printing, and pass through the design of the specific structure to artificial knee joint, realize it is slightly high, easy to process, firmly install and be not easy to loosen and other effects, in addition, also having the effect of easy to clean, disinfection and maintenance.
Description
Technical field
The utility model relates to a kind of prosthese of similar human body Bones and joints, in particular to a kind of artificial knee joint prosthesis.
Background technique
Joint prosthesis refers to biocompatibility and a kind of similar human body bone made of the metal material of satisfactory mechanical property
The prosthese in joint, the articular surface for being destroyed prosthetic replacement by disease or injury using operation method, the purpose is to cut off
Lesion removes pain, restores the activity and original function in joint.Prosthetic replacement has joint motion preferable, can early stage
The advantages that Go to ground activity, the complication of reduction elderly patients' long-term bed, in European and American developed countries, prosthetic replacement performs the operation
It is one of most common operation, the development of China's joint replacement in recent years is also very fast.Wherein, knee prosthesis and hip close
Section displacement is the most common two classes operation in artificial joint replacement.
Existing joint prosthesis, such as artificial knee joint, are usually made of metal material, and knee joint is contacted with human body bone
Metal covering typically uses Microporous Coating structures, and the defect of this structure is: coating and metal covering bond strength are poor, together
When coating way made of the bad control of its parameter of microcellular structure, the hole uniformity is poor, influences using effect.In addition, existing
This porous coating use when be easy peel off, generate metal fragment so that cleaning, disinfection and maintenance work it is more difficult.
Utility model content
To solve the above problems, the utility model provides a kind of artificial knee joint prosthesis.
One aspect according to the present utility model provides a kind of artificial knee joint prosthesis, including lateral femoral condyle prosthesis, shin bone
Gasket and tibia support prosthese, the tibial insert is between the lateral femoral condyle prosthesis and the tibia support prosthese, the shin bone
Holding in the palm prosthese includes matter compact part and the porous portion positioned at matter compact part bottom, and the matter compact part and the porous portion 3D printing are made
One, the bottom of the porous portion further includes having two lateral columns and a center projections, and the matter compact part extend into the lateral column
With the inside of the center projections；The porous portion includes the loose face of multilayer, and every layer of loose face is equipped with multiple micropore knots
Structure, and the porosity in each layer loose face is sequentially increased from inside to outside.
In some embodiments, the raised convex surface in the top center of the lateral femoral condyle prosthesis, in the convex surface
Between be equipped with rectangular through-hole, outside is extended with protrusion, and the top of the tibial insert is equipped with a root post.Thus, it is possible to have
Have the bone condyle prosthese and the firm effect combined of the tibial insert.
In some embodiments, the top two sides of the lateral femoral condyle prosthesis all have a mounting post, and two sides of the bottom are set
There is contact convex surface, the top two sides of the tibial insert are equipped with the contact concave surface matched with the contact convex surface.Thus, it is possible to
Embodiment with another bone condyle prosthese of offer in conjunction with the tibial insert.
In some embodiments, the front of the bottom of the tibial insert is equipped with recess portion, and rear portion is equipped with strip portion, described
The front at the top of matter compact part is equipped with the protrusion that can be matched with the recess portion, and rear portion, which is equipped with, to match with the strip portion
The card slot portion of conjunction.Thus, it is possible to have the effect of the tibial insert and the firm combination of the tibia support prosthese.
In some embodiments, the section of the lateral column is regular hexagon, and the center projections are that bottom is spherical in shape
Cylinder.Thus, it is possible to have the effect of being coupled with bone face or tissue.
In some embodiments, the porous portion includes three layers of loose face, the porosity in three layers of loose face
It is followed successively by 40%, 60% and 80% from inside to outside.Thus, it is possible to have the effect of being coupled with matter compact part and human body, and
Keep higher intensity and compactness.
In some embodiments, the porous portion with a thickness of 1.2-1.8mm, the aperture of the microcellular structure is
0.25-0.5mm.Preferably, the thickness in every layer of loose face is 0.4-0.6mm.The adhesion strength > in micropore portion as a result,
25MPa both ensure that the engaging portion mechanical property with higher between porous portion and matter compact part, and ensure that the strong of prosthese
Degree, while lesser thickness, and reduce the generation of metal fragment, maintenance easy to clean.
In some embodiments, the lateral femoral condyle prosthesis is made of cochrome, and the tibial insert is by polyethylene material
Material is made, and the tibia support prosthese is made of cochrome or titanium alloy.Thus, it is possible to have the effect of convenient be applicable in.
Detailed description of the invention
Fig. 1 is the structural exploded view of the artificial knee joint prosthesis of one embodiment of the utility model；
Fig. 2 is the structural schematic diagram of the lateral femoral condyle prosthesis of artificial knee joint prosthesis shown in Fig. 1；
Fig. 3 is the structural schematic diagram one of the tibial insert of artificial knee joint prosthesis shown in Fig. 1；
Fig. 4 is the structural schematic diagram two of the tibial insert of artificial knee joint prosthesis shown in Fig. 1；
Fig. 5 is the structural schematic diagram one of the tibia support prosthese of artificial knee joint prosthesis shown in Fig. 1；
Fig. 6 is the structural schematic diagram two of the tibia support prosthese of artificial knee joint prosthesis shown in Fig. 1；
Fig. 7 is the hierarchical diagram of the tibia support prosthese of artificial knee joint prosthesis shown in Fig. 6；
Fig. 8 is the structural exploded view of the artificial knee joint prosthesis of one embodiment of the utility model；
Fig. 9 is the structural schematic diagram of the lateral femoral condyle prosthesis of artificial knee joint prosthesis shown in Fig. 8；
Figure 10 is the top structure schematic diagram of the tibial insert of artificial knee joint prosthesis shown in Fig. 8.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
Fig. 1 schematically shows a kind of whole knot of the artificial knee joint prosthesis of embodiment according to the present utility model
Structure.As shown in Figure 1, artificial knee joint prosthesis includes lateral femoral condyle prosthesis 1, tibial insert 2 and tibia support prosthese 3, tibial insert 2 is pacified
On tibia support prosthese 3, and lateral femoral condyle prosthesis 1 is placed on tibial insert 2.Wherein, lateral femoral condyle prosthesis 1 is generally closed by cobalt chromium
Gold is made, and tibial insert 2 is generally made of polythene material, and tibia support prosthese 3 is generally made of cochrome or titanium alloy,
Other suitable materials can also be used according to demand.
Fig. 2 shows the structure of the lateral femoral condyle prosthesis of artificial knee joint prosthesis shown in Fig. 1, and Fig. 3-4 shows that Fig. 1 is leted others have a look at
The structure of the tibial insert of work knee-joint prosthesis, Fig. 5-6 show the knot of the tibia support prosthese of artificial knee joint prosthesis shown in Fig. 1
Structure.As shown in figures 2-6, the centre on the raised convex surface 11 in the top center of lateral femoral condyle prosthesis 1, convex surface 11 is equipped with through-hole 12,
A protrusion 15 is extended with towards the position in outside；The top of tibial insert 2 is equipped with a root post 21, and bottom front portion is equipped with recessed
Portion 23, rear portion are equipped with strip portion 24；Tibia support prosthese 3 includes the matter compact part 4 on top and the porous portion 5 of bottom, the top of matter compact part 4
The front in portion is equipped with protrusion 41, and rear portion is equipped with card slot portion 42, and the bottom of porous portion 5 further includes having two lateral columns 51 and a center
Protrusion 52, matter compact part 4 extend into the inside of lateral column 51 and center projections 52.
Wherein, through-hole 12 can allow doctor visual field when carrying out prosthese installation operation more open, protrusion 15 and column 21
Effect be knee joint carry out curvature movement when, can assist condyle of femur carry out after roll movement.And recess portion 23 can be with protrusion
41 is in mating connection, and structures, the strip portions 24 such as the connecting hole of auxiliary connection is arranged in protrusion 41 sometimes can be with 42 phase of card slot portion
It is cooperatively connected, the section of lateral column 51 is regular hexagon, and center projections 52 are bottom cylinder spherical in shape, can be with bone face or human body
Tissue is coupled.
During installation, first install tibia support prosthese 3, i.e., first by lateral column 51 and center projections 52, then by recess portion 23 with
Tibial insert 2 is installed on tibia support prosthese 3 by the cooperation of protrusion 41, then lateral femoral condyle prosthesis 1 is installed on tibial insert 2.
It is installed after can also being first combined tibial insert 2 with tibia support prosthese 3, then lateral femoral condyle prosthesis 1 is installed again.
Fig. 7 shows the hierarchical diagram of tibia support prosthese shown in Fig. 6.The structure of the matter compact part 4 on 3 top of tibia support prosthese
It is more close, it is fitted closely during installation with tibial insert 2, not only facilitates installation, it is also high and can with easy to process, intensity
The multiple beneficials effect such as preventing scrap.And the porous portion 5 of bottom, including lateral column 51 and the outer layer of center projections 52, by more
The loose face 50 of layer is constituted, and the inside of lateral column 51 and center projections 52 is to be connected with matter compact part 4 and be identical material, it is believed that
It is a part of matter compact part 4.Be equipped with multiple microcellular structures on every layer of loose face 50, the porosity in each loose face 50 of layer from it is interior to
It is sequentially increased outside, inside is closely connect with matter compact part 4, and outside is directly contacted with bone face or tissue.In addition, matter compact part 4
It with porous portion 5 is made into integration by 3D printing.
More preferably, the number in loose face 50 is set as 3.As shown in fig. 7,3 loose faces 50 are followed successively by interior dredge from inside to outside
Loose side 501, in loose face 502 and outer loose face 503 wherein the voidage in outermost outer loose face 503 is maximum be 80%,
The beneficial effect is that it is long that biggish voidage can effectively facilitate bone since the layer is directly contacted with bone face or tissue
Enter；And innermost interior loose face 501 is connect with matter compact part 4, porosity 40%, intensity with higher, so that and matter
Connection between compact part 4 can be even closer, to improve the intensity of entire tibia support prosthese 3；And it is loose in being located in the middle
The porosity in face 502 is 60%, can be realized the transition between outer loose face 503 and interior loose face 501, to keep porous portion 5
Structural strength.
The thickness of porous portion 5 is only 1.2-1.8mm, wherein the thickness in every layer of loose face 50 is generally equal, it is 0.4-
0.6mm.And the aperture of microcellular structure is 0.25-0.5mm.So that the adhesion strength > 25MPa in micropore portion, both ensure that more
Engaging portion mechanical property with higher between hole portion and matter compact part, and ensure that the intensity of prosthese, while lesser thickness,
Reduce the generation of metal fragment, maintenance easy to clean again.
Fig. 8 schematically shows the entirety of the artificial knee joint prosthesis of another embodiment according to the present utility model
Structure.Wherein artificial knee joint shown in Fig. 1 is known as posterior cruciate ligament of knee substituted type knee joint, and artificial knee shown in fig. 8
Joint is known as posterior cruciate ligament of knee conservative knee joint.As described in Figure 8, wherein the positional relationship of each component compared in Fig. 1 not
It changes, only lateral femoral condyle prosthesis 10 and the structure of tibial insert 20 are different.
Fig. 9 shows the structure of the lateral femoral condyle prosthesis of artificial knee joint prosthesis shown in Fig. 8, and Figure 10 shows that Fig. 8 is leted others have a look at
The structure of the tibial insert of work knee-joint prosthesis.As shown in figs. 9-10, the top two sides of lateral femoral condyle prosthesis 10 all have a peace
Column 13 is filled, lateral femoral condyle prosthesis 10 is installed to the tissues such as skeleton, and 10 two sides of the bottom of lateral femoral condyle prosthesis are equipped with and connect
Touch convex surface 14；The top two sides of tibial insert 20 are equipped with and contact concave surface 22, wherein contact concave surface 22 can be with contact convex surface 14
It is coupled.
In addition, the bottom of the tibial insert 2 in the bottom structure of the tibial insert 20 in the embodiment and a upper embodiment
Structure is identical, all has recess portion 23 and strip portion 24, can match peace with the protrusion 41 of tibia support prosthese 3 and card slot portion 42
Dress.
Above-described is only some embodiments of the utility model.For those of ordinary skill in the art,
Without departing from the concept of the present invention, various modifications and improvements can be made, these belong to practical
Novel protection scope.
Claims (10)
1. a kind of artificial knee joint prosthesis, it is characterised in that: including lateral femoral condyle prosthesis (1,10), tibial insert (2,20) and shin bone
Hold in the palm prosthese (3), the tibial insert (2,20) between the lateral femoral condyle prosthesis (1,10) and the tibia support prosthese (3),
The tibia support prosthese include matter compact part (4) and be located at matter compact part (4) bottom porous portion (5), the matter compact part (4) and
One is made in porous portion (5) 3D printing, and the bottom of the porous portion (5) further includes having two lateral columns (51) and a center
Raised (52), the matter compact part (4) extend into the inside of the lateral column (51) and the center projections (52)；The porous portion
It (5) include the loose face of multilayer (50), every layer of loose face (50) is equipped with multiple microcellular structures, each layer loose face (50)
Porosity be sequentially increased from inside to outside.
2. a kind of artificial knee joint prosthesis according to claim 1, it is characterised in that: the top of the lateral femoral condyle prosthesis (1)
The centre of raised convex surface (11) among portion, the convex surface (11) is equipped with through-hole (12), and outside is extended with raised (15), institute
The top for stating tibial insert (2) is equipped with a root post (21).
3. a kind of artificial knee joint prosthesis according to claim 1, it is characterised in that: the top of the lateral femoral condyle prosthesis (10)
Portion two sides all have a mounting post (13), and two sides of the bottom are equipped with contact convex surface (14), the top two of the tibial insert (20)
Side is equipped with the contact concave surface (22) matched with contact convex surface (14).
4. a kind of artificial knee joint prosthesis according to claim 3, it is characterised in that: the bottom of the tibial insert (2,20)
The front in portion is equipped with recess portion (23), and rear portion is equipped with strip portion (24), and the front at the top of the matter compact part (4) is equipped with can be with institute
The protrusion (41) that recess portion (23) matches is stated, rear portion is equipped with the card slot portion (42) that can be matched with the strip portion (24).
5. a kind of artificial knee joint prosthesis according to claim 1, it is characterised in that: the section of the lateral column (51) is positive
Hexagon.
6. a kind of artificial knee joint prosthesis according to claim 1, it is characterised in that: the center projections (52) are bottom
Cylinder spherical in shape.
7. a kind of artificial knee joint prosthesis according to claim 1, it is characterised in that: the porous portion (5) includes three layers
The porosity of the loose face (50), three layers of loose face (50) is followed successively by 40%, 60% and 80% from inside to outside.
8. a kind of artificial knee joint prosthesis according to claim 1, it is characterised in that: the porous portion (5) with a thickness of
1.2-1.8mm, the aperture of the microcellular structure are 0.25-0.5mm.
9. a kind of artificial knee joint prosthesis according to claim 1, it is characterised in that: the thickness of every layer of loose face (50)
Degree is 0.4-0.6mm.
10. -9 one of them described a kind of artificial knee joint prosthesis according to claim 1, it is characterised in that: the condyle of femur
Prosthese (1,10) is made of cochrome, and the tibial insert (2,20) is made of polythene material, the tibia support prosthese (3)
It is made of cochrome or titanium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720870390.7U CN208492402U (en) | 2017-07-18 | 2017-07-18 | A kind of artificial knee joint prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720870390.7U CN208492402U (en) | 2017-07-18 | 2017-07-18 | A kind of artificial knee joint prosthesis |
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| Publication Number | Publication Date |
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| CN208492402U true CN208492402U (en) | 2019-02-15 |
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ID=65301372
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720870390.7U Active CN208492402U (en) | 2017-07-18 | 2017-07-18 | A kind of artificial knee joint prosthesis |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111281611A (en) * | 2019-12-30 | 2020-06-16 | 雅博尼西医疗科技(苏州)有限公司 | Method for connecting porous structure and substrate |
| KR20210108407A (en) * | 2019-03-11 | 2021-09-02 | 옌 왕 | MTS medial tibial plateau patch, prefabricated MTS medial tibial plateau patch and its minimally invasive replacement method |
-
2017
- 2017-07-18 CN CN201720870390.7U patent/CN208492402U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210108407A (en) * | 2019-03-11 | 2021-09-02 | 옌 왕 | MTS medial tibial plateau patch, prefabricated MTS medial tibial plateau patch and its minimally invasive replacement method |
| KR102649339B1 (en) * | 2019-03-11 | 2024-03-21 | 옌 왕 | tibial plateau patch |
| CN111281611A (en) * | 2019-12-30 | 2020-06-16 | 雅博尼西医疗科技(苏州)有限公司 | Method for connecting porous structure and substrate |
| CN111281612A (en) * | 2019-12-30 | 2020-06-16 | 雅博尼西医疗科技(苏州)有限公司 | Prosthesis with porous surface structure |
| CN111281611B (en) * | 2019-12-30 | 2022-05-24 | 雅博尼西医疗科技(苏州)有限公司 | Method for connecting porous structure and substrate |
| CN111281612B (en) * | 2019-12-30 | 2022-05-27 | 雅博尼西医疗科技(苏州)有限公司 | Prosthesis with porous surface structure |
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