CN108392297A - Single condyle knee-joint prosthesis - Google Patents
Single condyle knee-joint prosthesis Download PDFInfo
- Publication number
- CN108392297A CN108392297A CN201810314122.6A CN201810314122A CN108392297A CN 108392297 A CN108392297 A CN 108392297A CN 201810314122 A CN201810314122 A CN 201810314122A CN 108392297 A CN108392297 A CN 108392297A
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- China
- Prior art keywords
- fixed column
- condyle
- joint prosthesis
- knee
- femur
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 210000000629 knee joint Anatomy 0.000 title claims abstract description 43
- 210000000689 upper leg Anatomy 0.000 claims abstract description 65
- 210000002303 tibia Anatomy 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 210000000988 bone and bone Anatomy 0.000 abstract description 30
- 210000003127 knee Anatomy 0.000 abstract description 9
- 238000011882 arthroplasty Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 230000002980 postoperative effect Effects 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 2
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 208000004550 Postoperative Pain Diseases 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000013150 knee replacement Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000004409 osteocyte Anatomy 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 210000001519 tissue Anatomy 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
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Physical Education & Sports Medicine (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention belongs to medical instruments fields, disclose a kind of single condyle knee-joint prosthesis.The list condyle knee-joint prosthesis, including condyle of femur, platform support and the platform pad being arranged between condyle of femur and platform support, condyle of femur includes and matched first arcwall face of platform pad and second arcwall face opposite with the first arcwall face, the first fixed column and the second fixed column on the center line of the second arcwall face are formed on second arcwall face, wherein, under the original state of condyle of femur, the axis of first fixed column forms angle between horizontal plane, the axis of the second fixed column and the axis of the first fixed column.Single condyle knee-joint prosthesis of the present invention can preferably be fixed with the bone tissue of human body, to be effectively improved the stability of single condyle knee-joint prosthesis in human body after single condyle replacement knee in arthroplasty, and then effectively ensure kneed proper motion characteristic.
Description
Technical field
The invention belongs to medical instruments fields, and in particular to a kind of list condyle knee-joint prosthesis.
Background technology
Single condyle knee-joint prosthesis is for replacing kneed surgical implant, for single condyle replacement knee in arthroplasty.It is single
Condyle replacement knee in arthroplasty can significantly reduce the bleeding situation in patient's art, Yi Jishu for total knee replacement
Recovery time afterwards maintains kneed normal kinetic since it remains the forward and backward ligamentaum cruciatum of human body, to
Patient can be made to obtain the postoperative knee articulation ability of higher level.
For single condyle replacement knee in arthroplasty, whether single condyle knee-joint prosthesis can stably and firmly match in patient
In vivo, most important for the success of operation, while can also reduce the postoperative pain of patient, and reduce the postoperative possibility overhauled
Property.Existing knee-joint prosthesis includes mainly condyle of femur, platform support and the platform pad between condyle of femur and platform support.So
And one or more fixed columns being mutually parallel would generally be provided on the condyle of femur in existing knee-joint prosthesis, for
It is fixedly connected with the femur of human body, postoperative fixed effect is unsatisfactory, the fixation being easy to cause between condyle of femur and femur
It loosens；In addition, in existing knee-joint prosthesis, condyle of femur is usually curved surface with the matched surface of platform pad, should
Curved surface causes condyle of femur that cannot remain that each position with platform pad closely connects in the motion process relative to platform pad
It touches, platform pad can be caused to be easy abjection platform support in this way；In addition, in existing knee-joint prosthesis, lead on the bottom surface of platform support
A fixed plate outstanding can be often formed, for being fixed with the bone tissue of human body, one would generally be formed in the fixed plate
Groove type hole is in favor of Bone Ingrowth, but the opening area of this kind of groove type hole is larger, and the fixed effect after Bone Ingrowth is also unsatisfactory.
In view of the deficiencies of the prior art, those skilled in the art wish to seek it is a kind of can preferably with human body
Single condyle knee-joint prosthesis that bone tissue is fixed, to improve after single condyle replacement knee in arthroplasty single condyle knee-joint prosthesis in people
Stability in body, to ensure kneed proper motion characteristic.
Invention content
In order to improve the stability of single condyle knee-joint prosthesis in human body after single condyle replacement knee in arthroplasty, to ensure that knee closes
The proper motion characteristic of section, the present invention propose a kind of single condyle knee pass that can be preferably fixed with the bone tissue of human body
Save prosthese.
List condyle knee-joint prosthesis according to the present invention, including condyle of femur, platform support and setting condyle of femur and platform support it
Between platform pad, condyle of femur includes and matched first arcwall face of platform pad and second arc opposite with the first arcwall face
Face is formed with the first fixed column and the second fixed column on the center line of the second arcwall face on the second arcwall face, wherein
Under the original state of condyle of femur, the axis of the first fixed column is perpendicular to horizontal plane, the axis of the second fixed column and the first fixed column
Axis between form angle.
Further, ranging from 3 ° of the angle formed between the axis of the second fixed column and the axis of the first fixed column are extremely
5°。
Further, under the original state of condyle of femur, the height of the first fixed column is more than the height of the second fixed column.
Further, the diameter of the first fixed column is more than the diameter of the second fixed column.
Further, it is formed at least one conical round table on the periphery wall of the first fixed column and/or the second fixed column, bores
The cross-sectional width of shape round platform gradually increases on the direction towards platform pad.
Further, the spherical for being formed with indent on one side close to the first arcwall face of platform pad, the first arcwall face structure
It causes to completely attach to spherical always.
Further, the edge of the one side close to the first arcwall face of platform pad is configured to even surface.
Further, platform support includes landing slab, is arranged in the backup plate of the side of the top surface of landing slab and setting in platform
The fixed plate of the bottom surface of plate, the top surface of landing slab and backup plate are formed for the sliding area against platform pad, sliding area it is each
Place is configured to smooth plane, and the face of platform pad being in contact with the top surface of landing slab and with backup plate is configured to plane.
Further, ranging from the 5 of the ratio between the height of platform pad and height of backup plate:4 to 4:3.
Further, the height on front side of the close human tibia of platform pad is more than on rear side of the close human tibia of platform pad
Highly.
Further, the width of fixed plate is gradually reduced on the direction away from landing slab, so that fixed plate is formed as down
It is trapezoidal.
Further, the through-hole and/or threaded hole of multiple stagger settings are formed in fixed plate.
Further, one end of the separate landing slab of fixed plate is formed with detent projection.
Further, the bottom of the second arcwall face, the outer surface of the first fixed column, the outer surface of the second fixed column, landing slab
It is coated with bioactivity coatings on face and the outer surface of fixed plate.
When in use, condyle of femur and platform support are respectively used to and body bone tissue phase single condyle knee-joint prosthesis of the present invention
Even, the first arcwall face of condyle of femur and the upper surface of platform pad coordinate, and after the completion of installing prosthetic surgery, condyle of femur can drive flat
Cushion is free to slide in platform support, to realize the proper motion characteristic of human body knee joint.Single condyle knee joint of the present invention is false
By the way that the first fixed column and the second fixed column is arranged on the center line of the second arcwall face of condyle of femur, which exists body
Play the role of main fixed function during installation condyle of femur, the second fixed column, which plays, to be auxiliarily fixed, while first fixation
Angle is formed between the axis of column and the axis of the second fixed column so that for condyle of femur when fixed to body bone tissue, two solid
The clamping action to bone tissue is formd between fixed column to a certain extent, is gone out to increase the resistance to plucking of condyle of femur after fixation
Ability so that the connection of condyle of femur and body bone tissue is more secured.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element
Or part is generally identified by similar reference numeral.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is the front view according to the structure of single condyle knee-joint prosthesis of the present invention；
Fig. 2 is the side view according to the structure of single condyle knee-joint prosthesis of the present invention；
Fig. 3 is the vertical view according to the structure of single condyle knee-joint prosthesis of the present invention；
Fig. 4 is the structural schematic diagram of the first embodiment of condyle of femur shown in FIG. 1；
Fig. 5 is the structural schematic diagram of the second embodiment of condyle of femur shown in FIG. 1；
Fig. 6 is the structural schematic diagram of platform pad shown in FIG. 1；
Fig. 7 is the structural schematic diagram of the first embodiment of platform support shown in FIG. 1；
Fig. 8 is the structural schematic diagram of the second embodiment of platform support shown in FIG. 1.
Specific implementation mode
The embodiment of technical solution of the present invention is described in detail below in conjunction with attached drawing.Following embodiment is only used for
Clearly illustrate technical scheme of the present invention, therefore be only used as example, and the protection model of the present invention cannot be limited with this
It encloses.
Figures 1 and 2 show that the structure of list condyle knee-joint prosthesis 100 according to the present invention.As depicted in figs. 1 and 2, the list
Condyle knee-joint prosthesis 100 includes condyle of femur 1, platform support 3 and the platform pad 2 being arranged between condyle of femur 1 and platform support 3.In conjunction with
Shown in Fig. 3, condyle of femur 1 includes and 2 matched first arcwall face 14 of platform pad and second arc opposite with the first arcwall face 14
Shape face 13, the first fixed column 11 and second being formed on the second arcwall face 13 on the center line of the second arcwall face 13 are fixed
Column 12.Wherein, in the original state of condyle of femur 1 (state as shown in Figure 1, i.e., after list condyle knee-joint prosthesis 100 is mounted on human body
Original state) under, the axis of the first fixed column 11 is perpendicular to horizontal plane, the axis of the second fixed column 12 and the first fixed column 11
Axis between form angle α.
When in use, condyle of femur 1 and platform support 3 are respectively used to and human body bone group single condyle knee-joint prosthesis 100 of the present invention
Knit connected, the first arcwall face 14 of condyle of femur 1 and the upper surface cooperation of platform pad 2, after the completion of prosthetic surgery is installed, condyle of femur
1 can be free to slide in platform support 3 with moving platform pad 2, to realize the proper motion characteristic of human body knee joint.The list of the present invention
Condyle knee-joint prosthesis 100 is solid by the way that the first fixed column 11 and second is arranged on the center line of the second arcwall face 13 of condyle of femur 1
Fixed column 12, first fixed column 11 play main fixed function during installing condyle of femur 1, and the second fixed column 12 plays auxiliary
Fixed function is helped, while angle α is formed between the axis of first fixed column 11 and the axis of the second fixed column 12 so that femur
Condyle 1 forms the clamping action to bone tissue to a certain extent when fixed to body bone tissue between two fixed columns, from
And increase the resistance to plucking output capacity of condyle of femur 1 after fixation so that condyle of femur 1 and the connection of body bone tissue are more secured.
Preferably, in order to avoid two fixed columns of condyle of femur 1 influence the installation of condyle of femur 1 and fix because angle is excessive,
That is in order to enable two fixed columns of condyle of femur 1 more smoothly, be easily fixed on body bone tissue, can be by second
The range of the angle α formed between the axis of fixed column 12 and the axis of the first fixed column 11 is arranged between 3 ° to 5 °.It is preferred that
The value on ground, angle α is 3 °.
In preferred embodiment as shown in Figure 1, under the original state of condyle of femur 1, the height of the first fixed column 11
More than the height of the second fixed column 12.By the setting, when installing condyle of femur 1, since the height of the first fixed column 11 is more than
The height of second fixed column 12, therefore, when the first fixed column 11 enters on body bone tissue in corresponding mounting hole, second is solid
Fixed column 12 not yet enters its corresponding mounting hole, as the first fixed column 11 progresses into corresponding mounting hole depths,
Second fixed column 12 also enters mounting hole corresponding with second fixed column 12, in this way, the first fixed column 11 is in entrance and its
The guiding role to the second fixed column 12 is played during corresponding mounting hole, to keep the second fixed column 12 more accurate
Really, it successfully extend into corresponding mounting hole.
Further, main fixed function is played since the first fixed column 11 is used for the fixation to condyle of femur 1, and second is solid
Fixed column 12 is used for the fixation to condyle of femur 1 and plays the fixed function of auxiliary, therefore can be arranged to the diameter of the first fixed column 11 greatly
In the diameter of the second fixed column 12.In this way, the first fixed column 11 has the external surface area of bigger compared to the second fixed column 12, it should
The external surface area of bigger is more conducive to the Bone Ingrowth in later stage, to realize the main fixed function of the first fixed column 11.Preferably,
A diameter of 6mm of one fixed column 11, a diameter of 4mm of the second fixed column.
According to the present invention, the first fixed column 11 similar can also be different to the shape of the second fixed column 12.
In a preferred embodiment, the first fixed column 11 and the second fixed column 12 can be set to as shown in Figure 1
Similar taper, in order to which the first fixed column 11 can more smoothly enter in corresponding mounting hole with the second fixed column 12.
In another preferred embodiment, as shown in figure 4, the periphery of the first fixed column 11 and/or the second fixed column 12
Can be formed at least one conical round table 111 on wall, the cross-sectional width of conical round table 111 on the direction towards platform pad 2 by
It is cumulative to add.The setting of the conical round table 11 makes condyle of femur 1 when mounted, and the first fixed column 11 and the second fixed column 12 can be suitable
Profit enters in corresponding mounting hole, and after the first fixed column 11 and the second fixed column 12 are packed into corresponding mounting hole, first
Fixed column 11 and the second fixed column 12 are not easy corresponding mounting hole.The setting of the conical round table 11 substantially increases femur
The resistance to plucking output capacity of condyle 1, meanwhile, which also increases the first fixed column 11 and the second fixed column to a certain extent
12 external surface area, the external surface area of the bigger provide the fixed space of bigger, therefore more conducively stock for subsequent Bone Ingrowth
Stablizing for bone condyle 1 is fixed.Preferably, the tapered slope of conical round table 111 and the sidewall surfaces of fixed column are formed by angle and are
1 ° to 1.5 °, preferably 1 °.
Further, in the embodiment as shown in fig.5, the periphery wall of the first fixed column 11 and/or the second fixed column 12
On be formed with multiple conical round table 111, multiple conical round table 111 can be identical, can also be arranged to it is similar, i.e., adjacent
Two conical round table 111 in, the taper circle far from platform pad 2 is more than close to the maximum outside diameter of the conical round table 111 of platform pad 2
The maximum outside diameter of platform 111, to further increase the external surface area of the first fixed column 11 and the second fixed column 12, to further carry
1 fixed stability of high condyle of femur.
According to the present invention, in conjunction with shown in Fig. 1 and Fig. 6, platform pad 2 is formed with indent on one side close to the first arcwall face 14
Spherical 21, the first arcwall face 14 be constructed to be permeable to always with spherical 21 completely attach to.Pass through the setting so that platform pad
2 spherical 21 remains sphere-contact with the first arcwall face 14 of condyle of femur 1, i.e., so that the first arcwall face of condyle of femur 1
14 various pieces are in close contact with the spherical of platform pad 2 21 always during movement, on the one hand increase stock
The flexibility coordinated between bone condyle 1 and platform pad 2, on the other hand since sphere-contact further increases condyle of femur 1 and platform
The cooperation area of pad 2, therefore condyle of femur 1 can also be effectively prevent to deviate from platform pad 2.
Further, as shown in fig. 6, the one side close to the first arcwall face 14 of platform pad 2 (includes the one of spherical 21
Face) edge be configured to even surface.The setting of the even surface advantageously reduces condyle of femur 1 when being moved relative to platform pad 2 pair
Platform pads the abrasion at 2 edges, to effectively prevent being broken to tissue because the abrasion of platform pad 2 generates material granule
It is bad.Preferably, for the ease of processing, which can be configured to plane.
In preferred embodiment as shown in FIG. 6, the height of A is more than platform on front side of the close human tibia of platform pad 2
The height of B on rear side of the close human tibia of pad 2.The setting on the one hand so that condyle of femur 1 movable degree of freedom is more on platform pad 2
Be conducive to further avoid the abjection platform of condyle of femur 1 pad 2 while high；On the other hand so that platform pad 2, which has, is similar to voussoir
Shape, so as to the installation convenient for platform pad 2.
According to the present invention, in conjunction with shown in Fig. 1 and Fig. 7, platform support 3 includes landing slab 31, is arranged in the top surface of landing slab 31
Side backup plate 32 and the fixed plate 33 in the bottom surface of landing slab 31 is set, the top surface of landing slab 31 is formed with backup plate 32 to be used for
Against the sliding area of platform pad, smooth plane, the top with landing slab 31 of platform pad 2 are configured to everywhere in sliding area
Face and the face being in contact with backup plate 32 are configured to plane.The setting reduces the frictional force that platform pad 2 is moved in sliding area,
To while improving condyle of femur 1 relative to 3 activity property freely of platform support, advantageously reduce the abrasion of platform pad 2.
In preferred embodiment as shown in Figure 3, strip is formed on the edge of platform pad 2 abutted against with backup plate 32
Protrusion 22, which helps to further decrease the abrasion between platform pad 2 and backup plate 32.Preferably, the strip is convex
The thickness for playing 22 is 3mm to 5mm, and length is preferably the 3/4 of the length of platform pad 2, and the position of peak is less than backup plate 32
The position on top.
Preferably, as shown in Fig. 2, the height of platform pad 2 and ranging from the 5 of the ratio between the height of backup plate 32:4 to 4:3.At this
In range, the first arcwall face 14 of condyle of femur 1 is not easy to wear with the top of backup plate 32, while platform pad 2 is not easy to
Platform support 3, so that the cooperation between condyle of femur 1, platform pad 2 and platform support three is the most steady.
It is further preferred that as shown in Fig. 2, fixed plate 33 is arranged in the side at the close shin bone center of landing slab 31, i.e., it is fixed
Plate 33 is as shown in Figure 2 to be arranged on the right side of the center line of landing slab 31, which makes shin bone be not susceptible to the risk of fracture.
Further, as shown in fig. 7, the width of fixed plate 33 is gradually reduced on the direction of landing slab 31, so that
Fixed plate 33 is formed as inverted trapezoidal.The bone tissue on the one hand fixed plate 33 being enable smoothly to be inserted into human body is arranged in the inverted trapezoidal
In, to realize Fast Installation and the fixation of platform support 3；On the other hand the contact area with body bone tissue is increased, in favor of
Stablizing for platform support 3 is fixed.Preferably, the through-hole and/or threaded hole of multiple stagger settings are formed further in fixed plate 33
34.By by 34 stagger setting of through-hole or threaded hole so that stress of the fixed plate 33 when being fixed with body bone tissue everywhere is more
Uniformly, in later stage Bone Ingrowth, the distribution of osteocyte is also average, solid to be conducive to platform support 3 and the stabilization of body bone tissue
It is fixed.Meanwhile by being threaded hole 34, the fixation of locking nail can be realized first in mounting platform support 3, then in the bone in later stage
The fixation that itself bone tissue is realized during growing into, to realize the more stable fixed effect of platform support 3.
In the embodiment shown in fig. 8, with embodiment shown in Fig. 7 the difference is that, fixed plate 33 it is separate
One end of landing slab 31 is formed with detent projection 35.The detent projection 35 is used to increase the resistance to plucking output capacity of platform support 3, with into one
Step improves the fixed stability of platform support 3.
In addition, according to the present invention, it can also be in the second arcwall face 13, the outer surface of the first fixed column 11, the second fixed column 12
Outer surface, be coated with bioactivity coatings (bioactivity on the bottom surface of landing slab 31 and the outer surface of fixed plate 33
Coating for example can be the composite coating of titanium valve coating or hydroxyapatite coating layer or titanium valve and hydroxyapatite), i.e., so that stock
Bone condyle 1 and platform support 3 can also realize biological fixation when the bone tissue with human body is fixed, to further increase condyle of femur 1
With the fixed stability and reliability of platform support 2 and body bone tissue.
It should be noted that unless otherwise indicated, technical term or scientific terminology used in this application should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.
In the description of the present application, it is to be understood that the orientation of the instructions such as term " width ", "horizontal", "top", "bottom"
Or position relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, and
It is not that the device of instruction or hint meaning or element must have a particular orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.
In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply relatively important
Property or implicitly indicate the quantity of indicated technical characteristic.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover in the claim of the present invention and the range of specification.Especially, as long as there is no knots
Structure conflict, items technical characteristic mentioned in the various embodiments can be combined in any way.The present invention does not limit to
In specific embodiment disclosed herein, but include all technical solutions fallen within the scope of the appended claims.
Claims (14)
1. a kind of list condyle knee-joint prosthesis, which is characterized in that including condyle of femur, platform support and setting the condyle of femur with it is described
Platform pad between platform support, the condyle of femur include with matched first arcwall face of the platform pad and with first arc
The second opposite arcwall face of shape face, first be formed on second arcwall face on the center line of second arcwall face
Fixed column and the second fixed column, wherein under the original state of the condyle of femur, the axis of first fixed column is perpendicular to water
Plane forms angle between the axis of second fixed column and the axis of first fixed column.
2. list condyle knee-joint prosthesis according to claim 1, which is characterized in that the axis of second fixed column with it is described
Ranging from 3 ° to 5 ° of the angle formed between the axis of first fixed column.
3. list condyle knee-joint prosthesis according to claim 1 or 2, which is characterized in that in the original state of the condyle of femur
Under, the height of first fixed column is more than the height of second fixed column.
4. list condyle knee-joint prosthesis according to claim 1 or 2, which is characterized in that the diameter of first fixed column is big
In the diameter of second fixed column.
5. list condyle knee-joint prosthesis according to claim 1 or 2, which is characterized in that first fixed column and/or described
At least one conical round table is formed on the periphery wall of second fixed column, the cross-sectional width of the conical round table is put down towards described
It is gradually increased on the direction of cushion.
6. list condyle knee-joint prosthesis according to claim 1 or 2, which is characterized in that the platform pad close to described the
The spherical for being formed with indent on one side of one arcwall face, first arcwall face are constructed to be permeable to complete with the spherical always
Contact.
7. list condyle knee-joint prosthesis according to claim 6, which is characterized in that close first arc of the platform pad
The edge of the one side in shape face is configured to even surface.
8. list condyle knee-joint prosthesis according to claim 1 or 2, which is characterized in that the platform support includes landing slab, if
Set the side of the top surface of the landing slab backup plate and the fixed plate in the bottom surface of the landing slab is set, the landing slab
Top surface and the backup plate are formed for the sliding area against the platform pad, are configured to everywhere in the sliding area smooth
Plane, the platform pad is configured to plane with the top surface of the landing slab and the face being in contact with the backup plate.
9. list condyle knee-joint prosthesis according to claim 8, which is characterized in that the height of the platform pad and the backup plate
The ratio between height ranging from 5:4 to 4:3.
10. list condyle knee-joint prosthesis according to claim 8, which is characterized in that the close human tibia of the platform pad
The height of front side is more than the height on rear side of the close human tibia of the platform pad.
11. list condyle knee-joint prosthesis according to claim 8, which is characterized in that the width of the fixed plate is away from institute
It states and is gradually reduced on the direction of landing slab, so that the fixed plate is formed as inverted trapezoidal.
12. list condyle knee-joint prosthesis according to claim 9, which is characterized in that be formed with multiple mistakes in the fixed plate
Open up the through-hole and/or threaded hole set.
13. list condyle knee-joint prosthesis according to claim 9, which is characterized in that the separate platform of the fixed plate
One end of plate is formed with detent projection.
14. list condyle knee-joint prosthesis according to claim 8, which is characterized in that second arcwall face, described first are consolidated
The outer surface of fixed column, the outer surface of second fixed column, the bottom surface of the landing slab and the fixed plate outer surface on
It is coated with bioactivity coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810314122.6A CN108392297A (en) | 2018-04-10 | 2018-04-10 | Single condyle knee-joint prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810314122.6A CN108392297A (en) | 2018-04-10 | 2018-04-10 | Single condyle knee-joint prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108392297A true CN108392297A (en) | 2018-08-14 |
Family
ID=63096855
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810314122.6A Pending CN108392297A (en) | 2018-04-10 | 2018-04-10 | Single condyle knee-joint prosthesis |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109620480A (en) * | 2019-01-31 | 2019-04-16 | 苏州微创关节医疗科技有限公司 | Single condyle femoral prosthesis and shin bone liner |
| CN109875729A (en) * | 2019-03-05 | 2019-06-14 | 福建医科大学附属第一医院 | A kind of single condyle displacement femoral prosthesis and its application method equipped with metal filling block |
| CN109875730A (en) * | 2019-03-05 | 2019-06-14 | 福建医科大学附属第一医院 | A kind of structure and its application method of femoral prosthesis |
| CN110538010A (en) * | 2019-09-17 | 2019-12-06 | 北京爱康宜诚医疗器材有限公司 | Unicondylar knee joint prosthesis |
| CN110786969A (en) * | 2019-10-28 | 2020-02-14 | 北京市春立正达医疗器械股份有限公司 | Tibial plateau holds in palm and uses its unicondylar knee joint prosthesis |
| CN112674913A (en) * | 2021-01-14 | 2021-04-20 | 福州大学 | Unicondylar knee joint prosthesis capable of preventing looseness and working method thereof |
| CN114587717A (en) * | 2022-03-07 | 2022-06-07 | 北京市春立正达医疗器械股份有限公司 | Knee joint multi-compartment replacement prosthesis with dual fixation mode for retaining bone mass |
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| CN109620480A (en) * | 2019-01-31 | 2019-04-16 | 苏州微创关节医疗科技有限公司 | Single condyle femoral prosthesis and shin bone liner |
| CN109875729A (en) * | 2019-03-05 | 2019-06-14 | 福建医科大学附属第一医院 | A kind of single condyle displacement femoral prosthesis and its application method equipped with metal filling block |
| CN109875730A (en) * | 2019-03-05 | 2019-06-14 | 福建医科大学附属第一医院 | A kind of structure and its application method of femoral prosthesis |
| CN110538010A (en) * | 2019-09-17 | 2019-12-06 | 北京爱康宜诚医疗器材有限公司 | Unicondylar knee joint prosthesis |
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| CN110786969A (en) * | 2019-10-28 | 2020-02-14 | 北京市春立正达医疗器械股份有限公司 | Tibial plateau holds in palm and uses its unicondylar knee joint prosthesis |
| CN112674913A (en) * | 2021-01-14 | 2021-04-20 | 福州大学 | Unicondylar knee joint prosthesis capable of preventing looseness and working method thereof |
| CN114587717A (en) * | 2022-03-07 | 2022-06-07 | 北京市春立正达医疗器械股份有限公司 | Knee joint multi-compartment replacement prosthesis with dual fixation mode for retaining bone mass |
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