CN109620478A - Knee joint single condyle component and the single condyle articular system for applying it - Google Patents
Knee joint single condyle component and the single condyle articular system for applying it Download PDFInfo
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- CN109620478A CN109620478A CN201910106912.XA CN201910106912A CN109620478A CN 109620478 A CN109620478 A CN 109620478A CN 201910106912 A CN201910106912 A CN 201910106912A CN 109620478 A CN109620478 A CN 109620478A
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- 210000000629 knee joint Anatomy 0.000 title claims abstract description 49
- 210000002303 tibia Anatomy 0.000 claims abstract description 39
- 210000000689 upper leg Anatomy 0.000 claims abstract description 39
- 238000010146 3D printing Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- 210000000988 bone and bone Anatomy 0.000 abstract description 69
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 239000007787 solid Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000016507 interphase Effects 0.000 description 2
- 210000003127 knee Anatomy 0.000 description 2
- 230000003902 lesion Effects 0.000 description 2
- 229910000883 Ti6Al4V Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000011882 arthroplasty Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000963 osteoblast Anatomy 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 108010048734 sclerotin Proteins 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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
- A61F2/38—Joints for elbows or knees
- A61F2/3859—Femoral components
-
- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
-
- 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
-
- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
-
- 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
- A61F2/3094—Designing or manufacturing processes
- A61F2002/30985—Designing or manufacturing processes using three dimensional printing [3DP]
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Cardiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Physical Education & Sports Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention discloses knee joint single condyle components, including the stationary plane contacted with distal femur, stationary plane is equipped with porous layer, the hole of porous layer is in honeycomb, porosity is 52-72%, the range in aperture is 500-700 μm, porous layer with a thickness of 0.5-1.5mm, knee joint single condyle component is using 3D printing technique integrated molding.The invention also discloses single condyle articular systems, including knee joint single condyle component, further include gasket and tibia support component, and gasket is connect with tibia support component, gasket and knee joint single condyle component contact.Knee joint single condyle component of the invention and single condyle articular system have the advantages that Bone Ingrowth effect is good, porous layer is not easily to fall off, long service life.
Description
Technical field
The present invention relates to articular prosthesis technical fields, in particular to knee joint single condyle component and single condyle joint system using it
System.
Background technique
The knee joint partial injury or lesion of some patients, it is only necessary to which the unilateral knee joint of damage or lesion is set
It changes.Artificial knee joint system includes femoral condylar components, tibia support component and the gasket being disposed there between.Condyle of femur is connected to
Distal femur, tibia support component are connected to proximal tibia.Gasket is fixedly connected with tibia support component, and femoral condylar components connect with gasket
Touching.In the conventional technology, the coating for slightly making face can be equipped on femoral condylar components and tibia support component, it is therefore an objective to increase cancellous bone with
The contact area of prosthesis assembly.Coating have hole effect, osteoblast occurs under the promotion of pore structure adherency, break up and
Growth, makes mechanical compatibility and biocompatibility that articular system is improved in new Bone Ingrowth hole.Traditional knee joint system
Coating be to be formed in the matrix surface of joint component by plasma spraying or metal sintering process later period, defect exists
In the intensity of the binder course between coating and matrix is lower, and sometimes coating can fall off from matrix, influences the knee joint service life.
In addition the parameters such as traditional coating aperture, porosity and thickness are unable to accurately control, and the combination of coating and sclerotin is unable to reach excellent
Change.Requirement with people to medical treatment is higher and higher, promotes the ability of Bone Ingrowth to put forward new requirements joint component.
Summary of the invention
Knee joint single condyle component and single condyle articular system using it are provided according to an aspect of the present invention.
According to an aspect of the present invention, a kind of knee joint single condyle component is provided, including for contacting with distal femur
Stationary plane, stationary plane are equipped with porous layer, and the hole of porous layer is in honeycomb, and the range of porosity 52-72%, aperture are
500-700 μm, porous layer with a thickness of 0.5-1.5mm, knee joint single condyle component is integrally formed using 3D printing technique.
In some embodiments, stationary plane is equipped with a plurality of spaced first linear grooves, the first linear grooves
Condyle of femur rear end is consistently extended to from condyle of femur front end, the opening width of the first linear grooves is 0.3-0.7mm, adjacent first
Spacing between linear grooves is 1.1-1.9mm, and the depth of the first linear grooves is 0.2-0.4mm.
In some embodiments, the first linear grooves are parallel with sagittal plane.
In some embodiments, stationary plane includes sequentially connected first stationary plane, the second stationary plane, third stationary plane
With the 4th stationary plane, the first stationary plane, the second stationary plane, third stationary plane and the 4th stationary plane are all in flat, and first is fixed
The angle of face and the second stationary plane is 130-140 °, and the angle of the second stationary plane and third stationary plane is 130-140 °, and third is solid
The angle for determining face and the 4th stationary plane is 130-140 °.
According to another aspect of the present invention, a kind of single condyle articular system, including knee joint single condyle component are provided, further include
Gasket and tibia support component, gasket are connect with tibia support component, gasket and knee joint single condyle component contact.
In some embodiments, tibia support component includes platform and the company that is arranged in below platform and extends far from platform
Fitting, the lower surface of platform and the surface of connector are equipped with porous layer, and the hole of porous layer is in honeycomb, porosity 52-
72%, the range in aperture is 500-700 μm, porous layer with a thickness of 0.5-1.5mm, tibia support component uses 3D printing technique one
It is body formed.
In some embodiments, the surface of connector is additionally provided with a plurality of spaced second linear grooves, the second line
Property groove along far from platform direction extend.
In some embodiments, the opening width of the second linear grooves be 0.3-0.7mm, adjacent second linear grooves it
Between spacing be 1.1-1.9mm, the depth of the second linear grooves is 0.2-0.4mm, between two neighboring second linear grooves
Spacing is 1.1-1.9mm.
In some embodiments, gasket includes gasket body and interconnecting piece, and gasket body includes upper recess surface, body side
And body floor, wherein upper recess surface is contacted with condyle of femur surface, and body floor is provided with interconnecting piece, and interconnecting piece includes interconnecting piece side
Face and interconnecting piece bottom surface, interconnecting piece side are equipped with the first card slot and the first limiting section.
In some embodiments, the upper surface of platform is equipped with sinker area, and sinker area is configured as accommodating interconnecting piece, sink
The medial surface in area is equipped with the second card slot and the second limiting section, and the first limiting section is accommodated in the second card slot, the accommodating of the second limiting section
In the first card slot.
Knee joint single condyle component of the invention and single condyle articular system have the advantages that stationary plane, platform lower surface, connect
The surface of fitting is designed with cellular porosity, and porosity disclosed in present embodiment, pore diameter range, porous layer thickness etc. can have
Effect ground promotes Bone Ingrowth；The porous layer and solid section of present embodiment are integrally formed using 3D printing technique, porous layer and reality
Being firmly combined for center portion point, can prevent porous layer from falling off, improve the service life of prosthetic joint；First linear grooves and
Bilinear groove is conducive to keep ordered arrangement in distal femur bone trabecula growth course, promotes growing into for bone trabecula.
Detailed description of the invention
Fig. 1 is the side view after the knee joint system assembles of an embodiment of the present invention.
Fig. 2 is the explosive view of the knee joint system of an embodiment of the present invention.
Fig. 3 is the perspective view of the condyle of femur of the knee joint system of an embodiment of the present invention.
Fig. 4 is the condyle of femur side view of the knee joint system of an embodiment of the present invention.
Fig. 5 is the partial enlarged view at Fig. 3 virtual coil.
Fig. 6 is the cross-sectional profiles schematic diagram of the first linear grooves of the knee joint system of an embodiment of the present invention.
Fig. 7 is the perspective view of the gasket of the knee joint system of an embodiment of the present invention.
Fig. 8 is the perspective view of another angle of gasket of the knee joint system of an embodiment of the present invention.
Fig. 9 is the perspective view of the tibia support component of the knee joint system of an embodiment of the present invention.
Figure 10 is the schematic diagram after the condyle of femur of the knee joint system of an embodiment of the present invention is connect with distal femur.
Figure 11 is that the bone trabecula on the 4th resected bone face of distal femur moves towards schematic diagram.
Figure 12 is the signal after the tibia support component of the knee joint system of an embodiment of the present invention is connect with proximal tibia
Figure
Specific embodiment
The present invention is described in further detail by 1-12 with reference to the accompanying drawing.
Embodiments of the present invention disclose a kind of knee joint single condyle component and the knee joint system using it.Such as Fig. 1-2
It is shown, single condyle articular system, including knee joint single condyle component 100, gasket 200 and tibia support component 300.Knee joint single condyle component
100 are used for the proximal end fixed to human tibia for the distal end fixed to human femur under loading, tibia support component 300.Gasket 200 and shin
Bone support component 300 connects, and gasket 200 is contacted with knee joint single condyle component 100.
As shown in Figure 3-4, knee joint single condyle component 100 is in bending, including condyle of femur front end 101 and condyle of femur rear end
102, the face of 100 evagination of knee joint single condyle component is condyle of femur surface 103, and condyle of femur surface 103 is in smooth curved, femur
Condyle surface 103 is contacted with gasket 200.The face of 100 indent of knee joint single condyle component is stationary plane 104, and stationary plane 104 is used for and people
The contact of body distal femur.Stationary plane 104 includes the first stationary plane 105, the second stationary plane 106, third stationary plane being sequentially connected
107 and the 4th stationary plane 108.First stationary plane 105, the second stationary plane 106, third stationary plane 107 and the 4th stationary plane 108 are all
In flat.The angle of first stationary plane 105 and the second stationary plane 106 is 130-140 °, and the second stationary plane 106 is fixed with third
The angle in face 107 is 130-140 °, and the angle of third stationary plane 107 and the 4th stationary plane 108 is 130-140 °.Second stationary plane
Protruding portion 110 is vertically equipped on 106, protruding portion 110 is for being inserted into human femur under loading distal end.The side surface of protruding portion 110 is equipped with
Ridge rib 112, ridge rib 112 extend to the other end from one end of protruding portion 110, and ridge rib 112 can expand connecing for protruding portion 110 and bone
Contacting surface product.
Stationary plane 104 is equipped with porous layer, and the hole of porous layer is in honeycomb, porosity 52-72%, the range in aperture
Be 500-700 μm, porous layer with a thickness of 0.5-1.5mm.The porosity ranges of human body bone trabecula are in 70-84%, pore diameter range
In 360-820um.The porous structure of the stationary plane 104 of present embodiment more has close to the structure of human femur under loading distal end bone trabecula
Conducive to Bone Ingrowth.
Preferably, the surface of protruding portion 110 and 112 surface of ridge rib also are provided with porous layer, and the hole of porous layer is in honeycomb,
Porosity is 52-72%, and the range in aperture is 500-700 μm, porous layer with a thickness of 0.5-1.5mm.Protruding portion 110 and ridge rib
112 are inserted into the cancellous bone of distal femur, and porous structure promotes Bone Ingrowth.
With reference to Fig. 3 and Fig. 5, a plurality of spaced first linear grooves 109 are additionally provided on stationary plane 104, first is linear
It is also in cellular in groove 109.First linear grooves 109 consistently extend to condyle of femur rear end 102 from condyle of femur front end 101.
It is linear recessed that first is all distributed on first stationary plane 105, the second stationary plane 106, third stationary plane 107 and the 4th stationary plane 108
Slot 109.First stationary plane 105 and the second stationary plane 106 are crossed to form the first intersection 1041, and the second stationary plane 106 and third are solid
To determine face 107 and is crossed to form the second intersection 1042, third stationary plane 107 and the 4th stationary plane 108 are crossed to form third intersection 1043,
First intersection 1041, the second intersection 1042 and third intersection 1043 are parallel to each other.The first linear grooves on first stationary plane 105
109 and first the angle of intersection 1041 be 85-95 °, the first linear grooves 109 and the second intersection on the second stationary plane 106
1042 angle is 85-95 °, and the angle of the first linear grooves 109 and third intersection 1043 on third stationary plane 107 is 85-
95 °, the angle of the first linear grooves 109 and third intersection 1043 on the 4th stationary plane 108 is 85-95 °.Due to single knee joint
What is replaced is the part of the side side to the rear of condyle of femur, and bone trabecula trend at this time is substantially parallel with sagittal plane.It is implanted into knee
After joint list condyles part 100, the first linear grooves 109 are substantially parallel with sagittal plane, i.e., the first linear grooves 109 are walked with bone trabecula
It is intended to consistent.The opening width of first linear grooves 109 is 0.3-0.7mm, the spacing between adjacent first linear grooves 109
For 1.1-1.9mm, the depth of the first linear grooves 109 is 0.2-0.4mm.Fig. 6 schematically shows the of present embodiment
The cross-sectional profiles of one linear grooves 109.The cross-sectional profiles shape of first linear grooves 109 can be or it is substantially rectangular,
Trapezoidal, semicircle or other shapes.
As shown in Figure 10, it when carrying out replacement knee in arthroplasty, needs to cut out four resected bone faces in distal femur 400, pacify
When filling condyle of femur, by stationary plane 104 and resected bone face contact.For ease of description, four resected bone faces are respectively designated as
One resected bone face 401, the second resected bone face 402, third resected bone face 403 and the 4th resected bone face 404, wherein the first resected bone
Face 401 is contacted with the first stationary plane 105, and the second resected bone face 402 is contacted with the second stationary plane 106, third resected bone face 402 with
Third stationary plane 107 contacts, and the 4th resected bone face 404 is contacted with the 4th stationary plane 108.Resected bone face exposes bone trabecula, the
Bone trabecula on two resected bone faces 402 is in honeycomb, and 106 surface of the second stationary plane is also in cellular structures, and aperture and
The aperture and porosity of porosity and bone trabecula are easier bone trabecula be adhered on the second stationary plane 106 and to hole
Middle growth.From the normal direction in the first resected bone face 401, third resected bone face 403 or the 4th resected bone face 404, bone trabecula is in
Relatively orderly directionality arrangement, and orientation is substantially parallel with sagittal plane, i.e. 109 extending direction of the first linear grooves and bone
The orientation of girder is consistent, therefore the condyle of femur of present embodiment is closer to distal femur trabecular bone structure.Figure 11 is schematic
Ground shows the bone trabecula arrangement schematic diagram in the 4th resected bone face 404, and dotted line represents the trend of bone trabecula, the plane of reference 900 in figure
For sagittal plane.On first resected bone face 401 and third resected bone face 403 bone trabecula trend be also it is substantially parallel with sagittal plane,
It is shown no longer in the form of attached drawing herein.Obviously, the first strip boss is formed by between two neighboring first linear grooves 109
111 trend is also consistent with bone trabecula orientation.It is porous structure, the first strip boss 111 in first linear grooves 109
For porous structure.Laterally into the first stationary plane 105, third stationary plane 107 and the 4th stationary plane 108, length is fashionable for bone trabecula,
The bone trabecula of linear ordered arrangement can be first towards growing in the hole on the first closer strip boss 111, while bone is small
Beam can also be grown into the first linear grooves 109, then be grown into the hole in the first linear grooves 109.For this implementation
The condyle of femur of mode is still able to maintain linear orderly geometrical feature in bone trabecula growth course, avoids bone trabecula arrangement
Disorder.The ordered arrangement of bone trabecula is significant for bone endurance measurer.In addition, the first stationary plane 105, second is fixed
Face 106, third stationary plane 107 and the concave-convex interphase structure of the 4th stationary plane 108, expand knee joint single condyle component 100 and femur
The contact area of distal end, is conducive in conjunction with distal femur, and improves the mechanical connection with distal femur, prevents knee joint
Single condyles part 100 is mobile.
As shown in fig. 7, gasket 200 includes gasket body 201 and interconnecting piece 202.Gasket body 201 is by upper recess surface 203, master
Body side surface 204 and body floor 205 are limited, and wherein upper recess surface 203 is contacted with condyle of femur surface 103, and body floor 205 is arranged
There is interconnecting piece 202.Interconnecting piece 202 is limited by interconnecting piece side 206 and interconnecting piece bottom surface 207.As shown in figure 8, interconnecting piece side
Face 206 be equipped with the first card slot 209, the first card slot 209 along interconnecting piece side 206 contour extension.Preferably, the first card slot
209 are arranged in the bending position of interconnecting piece side 206, then the first card slot 209 is also in bending, when forming the first card slot 209,
It is natural to form sweeping first limiting section 210 between 202 lower edge of the first card slot 209 and interconnecting piece.
As shown in figure 9, tibia support component 300 includes platform 301 and is arranged below platform 301 and prolongs far from platform 301
The connector 302 stretched.301 upper surface of platform is equipped with sinker area 303, and sinker area 303 is configured as accommodating interconnecting piece 202, therefore
The shape of sinker area 303 and the shape of interconnecting piece 202 match.The medial surface 304 of sinker area 303 is equipped with second that bending extends
Card slot 305 correspondingly forms curved second limiting section 306 in the medial surface 304 of sinker area 303.Gasket 200 and tibia support
When component 300 connects, interconnecting piece 202 is extend into sinker area 303, and the first limiting section 210 is arranged in the second card slot 305, the
Two limiting sections 306 are arranged in the first card slot 209, are clamped gasket 200 and tibia support component 300.Due to the first card slot 209,
First limiting section 210, the second card slot 305 and the second limiting section 306 be all it is curved, avoid gasket 200 and tibia support component
Relative movement between 300.
In some embodiments, connector 302 is plate-like, and away from the direction of platform 301, connector 302 is wide
Degree becomes narrow gradually, it is preferable that connector 302 is triangular in shape.Preferably, connector 302 is arranged perpendicular to platform 301.
The lower surface and 302 surface of connector of platform 301 are equipped with porous layer, and the hole of porous layer is in honeycomb, porosity
For 52-72%, the range in aperture is 500-700 μm, porous layer with a thickness of 0.5-1.5mm.
In some embodiments, the surface of connector 302 is additionally provided with a plurality of spaced second linear grooves 307,
Second linear grooves 307 extend along the direction far from platform 301, it is preferable that the second linear grooves 307 are vertical with platform 301.
Second linear grooves 307 are molded on porous layer, also have hole in the second linear grooves 307.Adjacent second linear grooves 307
Between form the second strip boss 308, it is clear that on the second strip boss 308 also have pore structure.
In some embodiments, the opening width of the second linear grooves 307 is 0.3-0.7mm, and adjacent second is linear recessed
Spacing between slot 307 is 1.1-1.9mm, and the depth of the second linear grooves 307 is 0.2-0.4mm, and two neighboring second is linear
Spacing between groove 307 is 1.1-1.9mm.It the cross section of second linear grooves 307 can be with 307 phase of the first linear grooves
Together, it is shown no longer in the form of attached drawing herein.
As shown in figure 12, it in replacement operation, is cut in proximal tibia 500 and forms the 5th resected bone face 501, the 5th bone is cut
Except the following table face contact in face 501 and platform 301, connector 302 is inserted into the cancellous bone of proximal tibia 500.5th resected bone
Bone trabecula on face 501 is in honeycomb, and the hole of the porous layer of 301 lower surface of platform of present embodiment is close to the 5th resected bone
Bone trabecula on face 501 is easier bone trabecula on the 5th resected bone face 501 in the hole of the lower surface grown into platform 301.
The trend of second linear grooves 307 is also bonded the linear array direction of bone trabecula, and bone trabecula is laterally to the surface of connector 302
When growth, the bone trabecula of linear ordered arrangement can be first towards growing in the hole on the second closer strip boss 308, together
When bone trabecula can also be grown into the second linear grooves 307, then grow into the hole in the second linear grooves 307.For
The tibia support component of present embodiment is still able to maintain linear orderly geometrical feature in bone trabecula growth course, avoids
The bone trabecula of proximal tibia is disorganized.The ordered arrangement of bone trabecula is significant for bone endurance measurer.In addition, even
302 concave-convex surface interphase structure of fitting, expands the contact area of tibia support component 300 Yu proximal tibia, is conducive to and shin bone
Proximal end combines, and improves the mechanical coupling strength with proximal tibia, prevents tibia support component 300 mobile.
In some embodiments, the lower surface of platform 301 is additionally provided with multiple nails, and nail penetrates proximal tibia, mentions
The fastness that high tibia support component 300 is connect with shin bone.
Knee joint single condyle component 100 and tibia support component 300 are all integrally formed using 3D printing technique, i.e., solid section,
Porous structure, the first linear grooves 109 and the second linear grooves 307 are all integrally formed with 3D printing.3D printing technique is molding
The size distribution of porous layer hole and position distribution uniformity are good, and due to using integrated molding, porous layer and solid section
Bond strength it is high.Experiment shows that by taking Ti-6Al-4V as an example, the porous layer that 3D printing goes out is quiet with solid section binding site
State tensile strength is greater than 66MPa, and Static Shear Strength is greater than 52MPa, and (requirement of the U.S. FDA for coating is static stretch intensity
Greater than 22MPa, Static Shear Strength is greater than 20MPa).
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not
Under the premise of being detached from the invention design, various modifications and improvements can be made, these belong to protection model of the invention
It encloses.
Claims (10)
1. knee joint single condyle component (100), which is characterized in that described including the stationary plane (104) for being contacted with distal femur
Stationary plane (104) is equipped with porous layer, and the hole of porous layer is in honeycomb, and porosity 52-72%, the range in aperture is 500-
700 μm, porous layer with a thickness of 0.5-1.5mm, the knee joint single condyle component (100) is integrally formed using 3D printing technique.
2. knee joint single condyle component (100) according to claim 1, which is characterized in that the stationary plane (104) is equipped with
A plurality of spaced first linear grooves (109), first linear grooves (109) from condyle of femur front end (101) consistently
It extends to condyle of femur rear end (102), the opening width of first linear grooves (109) is 0.3-0.7mm, and adjacent first is linear
Spacing between groove (109) is 1.1-1.9mm, and the depth of the first linear grooves (109) is 0.2-0.4mm.
3. knee joint single condyle component (100) according to claim 2, which is characterized in that the stationary plane (104) includes suitable
Secondary connected the first stationary plane (105), the second stationary plane (106), third stationary plane (107) and the 4th stationary plane (108), first
Stationary plane (105), the second stationary plane (106), third stationary plane (107) and the 4th stationary plane (105) are all in flat.
4. knee joint single condyle component (100) according to claim 3, which is characterized in that first stationary plane (105) with
The angle of second stationary plane (106) is 130-140 °, and the angle of the second stationary plane (106) and third stationary plane (107) is 130-
140 °, third stationary plane (107) and the angle of the 4th stationary plane (108) are 130-140 °.
5. knee joint single condyle component (100) according to claim 3, which is characterized in that the first stationary plane (105) and second
Stationary plane (106) is crossed to form the first intersection (1041), and the second stationary plane (106) and third stationary plane (107) are crossed to form the
Two intersections (1042), third stationary plane (107) and the 4th stationary plane (108) are crossed to form third intersection (1043), the first intersection
(1041), the second intersection (1042) and third intersection (1043) are parallel to each other, the first linear grooves on the first stationary plane (105)
It (109) is 85-95 ° with the angle of the first intersection (1041), the first linear grooves (109) on the second stationary plane (106) and the
The angle of two intersections (1042) is 85-95 °, the first linear grooves (109) on third stationary plane (107) and third intersection
(1043) angle is 85-95 °, the folder of the first linear grooves (109) on the 4th stationary plane (108) and third intersection (1043)
Angle is 85-95 °.
6. single condyle articular system, which is characterized in that including the described in any item knee joint single condyle components (100) of claim 1-5,
It further include gasket (200) and tibia support component (300), the gasket (200) connect with the tibia support component (300), described
Gasket (200) is contacted with the knee joint single condyle component (100).
7. list condyle articular system according to claim 6, which is characterized in that the tibia support component (300) includes platform
(301) and setting is below the platform (301) and far from the connector (302) that the platform (301) extend, the platform
(301) surface of lower surface and connector (302) is equipped with porous layer, and the hole of porous layer is in honeycomb, porosity 52-
72%, the range in aperture is 500-700 μm, porous layer with a thickness of 0.5-1.5mm, the tibia support component (300) uses 3D
Printing technique is integrally formed.
8. list condyle articular system according to claim 7, which is characterized in that the surface of the connector (302) is additionally provided with
A plurality of spaced second linear grooves (307), the second linear grooves (307) extend along the direction far from platform (301),
The opening width of second linear grooves (307) is 0.3-0.7mm, and the spacing between adjacent second linear grooves (307) is 1.1-
1.9mm, the depth of the second linear grooves (307) are 0.2-0.4mm, the spacing between two neighboring second linear grooves (307)
For 1.1-1.9mm.
9. list condyle articular system according to claim 6, which is characterized in that gasket (200) include gasket body (201) and
Interconnecting piece (202), gasket body (201) include upper recess surface (203), body side (204) and body floor (205), wherein on
Concave surface (203) is contacted with condyle of femur surface (103), and body floor (205) is provided with interconnecting piece (202), and interconnecting piece (202) includes
Interconnecting piece side (206) and interconnecting piece bottom surface (207), the interconnecting piece side (206) are equipped with the first card slot (209) and the first limit
Position portion (210).
10. list condyle articular system according to claim 9, which is characterized in that the upper surface of the platform (301) is equipped with down
Heavy area (303), sinker area (303) are configured as accommodating interconnecting piece (202), and the medial surface (304) of sinker area (303) is equipped with second
Card slot (305) and the second limiting section (306), first limiting section (210) are accommodated in the second card slot (305), the second limit
Portion (306) is accommodated in the first card slot (209).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910106912.XA CN109620478A (en) | 2019-02-02 | 2019-02-02 | Knee joint single condyle component and the single condyle articular system for applying it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910106912.XA CN109620478A (en) | 2019-02-02 | 2019-02-02 | Knee joint single condyle component and the single condyle articular system for applying it |
Publications (1)
| Publication Number | Publication Date |
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| CN109620478A true CN109620478A (en) | 2019-04-16 |
Family
ID=66064944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910106912.XA Pending CN109620478A (en) | 2019-02-02 | 2019-02-02 | Knee joint single condyle component and the single condyle articular system for applying it |
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| Country | Link |
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| CN (1) | CN109620478A (en) |
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