CN109925099A - A kind of mechanical tight lock construction tibial plateau of bion knee joint - Google Patents
A kind of mechanical tight lock construction tibial plateau of bion knee joint Download PDFInfo
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- CN109925099A CN109925099A CN201910308189.3A CN201910308189A CN109925099A CN 109925099 A CN109925099 A CN 109925099A CN 201910308189 A CN201910308189 A CN 201910308189A CN 109925099 A CN109925099 A CN 109925099A
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- hole
- mandril
- handle
- platform support
- kidney shape
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- 210000000629 knee joint Anatomy 0.000 title claims abstract description 29
- UELITFHSCLAHKR-UHFFFAOYSA-N acibenzolar-S-methyl Chemical compound CSC(=O)C1=CC=CC2=C1SN=N2 UELITFHSCLAHKR-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000010276 construction Methods 0.000 title claims abstract description 12
- 210000003734 kidney Anatomy 0.000 claims abstract description 23
- 241000397426 Centroberyx lineatus Species 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 210000000988 bone and bone Anatomy 0.000 abstract description 15
- 210000002303 tibia Anatomy 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 2
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 239000002639 bone cement Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 238000006757 chemical reactions by type Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000011883 total knee arthroplasty Methods 0.000 description 2
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000011882 arthroplasty Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000004064 dysfunction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000008407 joint function Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 238000010883 osseointegration Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 210000004417 patella Anatomy 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 108010048734 sclerotin Proteins 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Abstract
The invention discloses a kind of mechanical tight lock construction tibial plateaus of bion knee joint, including kidney shape platform support, the upper surface of crook is provided with swallow-tail form convex block in kidney shape platform support, the upper surface of kidney shape platform support extroversion crook is provided with arc bump, is provided with hole in the middle part of kidney shape platform support, kidney shape platform support lower surface is connected with handle, tapped ring flat-plate is provided on the wall of handle middle and upper part, setting is there are two symmetrical vertical core on the wall of handle middle and lower part, in the two sides of each vertical core, sets that there are two circular holes respectively；Piercing means include: mandril, Screw, connector sleeve and are pierced into pawl；Tibial plateau of the invention, using " mechanical pressurization " and " hole axle cooperation " co-ordination mechanism, make to be pierced into the cancellous bone and cortex bone of pawl insertion shin bone, tibial plateau is steadily fixed on shin bone, tibial plateau does not loosen under load effect, solves the problems, such as that existing bion knee joint tibial platform initial stability is poor.Tibial plateau of the invention is overhauled conducive to the tibial plateau later period.
Description
Technical field
The invention belongs to the mechanical tight lock construction shin bone of medical equipment technical field more particularly to a kind of bion knee joint is flat
Platform.
Background technique
Replacement knee in arthroplasty can effectively solve the knee joint illness of sufferer, mitigate the pain of patient, to a certain extent
Restore the knee joint function of patient.Knee-joint prosthesis structure includes: condyle of femur, tibial plateau, tibial plateau pad, kneecap and attached
Part.With the continuous improvement that the rapid development and people of medical device technology safely, effectively require knee-joint prosthesis, knee joint
Prosthese technology is more mature perfect, and variety classes knee-joint prosthesis occurs successively.
Currently, knee-joint prosthesis can be divided into cement reaction type and biological fixation type (non-bone according to different fixed forms
Cement mo(u)ld) two major classes.Wherein, cement reaction type knee-joint prosthesis is referred to as " goldstandard " of total knee arthroplasty (TKA),
It is widely used in clinic.Bone cement monomer polymerization expandable osmotic can reinforce cancellous bone into bone trabecula, and then expand stress conduction
Range, to improve the tolerance to doctor's Technique deviation and sclerotin.However, bone cement is a kind of inertia material for the human body
Material, can be only formed in conjunction with mechanicalness, this necessarily faces aging, fragmentation and wear particle etc. and asks with bone tissue or articular prosthesis
Topic.Clinical practice discovery bone-cement type knee-joint prosthesis will appear a series of complication, as bone cement implantation syndrome (BCIS),
Bone cement polymerization exotherm causes peri-prosthetic tissues damage, postoperative local infection, affected part feeling or dysfunction and prosthese early stage
Loosen etc., influence success rate of operation and prosthese long-time stability.
Bion knee-joint prosthesis is to achieve the purpose that biology is fixed by the direct Bone Ingrowth of bone and prosthese, gram
The shortcomings that bone-cement type prosthese mechanicalness combines has been taken, has promoted prosthese and osseointegration, improves the long-time stability of prosthese, and
Later period of being more convenient for overhauls, and is with a wide range of applications.For bion knee-joint prosthesis, it can obtain firm initial
Stability is an important factor for influencing its later period Bone Ingrowth and long-time stability.Currently, bion knee-joint prosthesis mainly uses
The fixed form of interference press-fitting, tibial plateau prosthesis is fixed on shin bone, certain initial stability is obtained.However, existing
Bion knee-joint prosthesis is easy to produce loosening under load of walking, and the complication such as tibial plateau sinking or tilting often occurs, leads
Cause tibial plateau initial stability insufficient, reason is that tibial plateau is not able to achieve effective strong fixation or negative by bias more
The cross shear that lotus generates causes to generate fine motion or displacement between prosthese-bone interface.Therefore, by improving biological knee joint shin
The fixed design of bone platform strengthens the firm connection of articular prosthesis and shin bone tissue, for enhancing the first of biological knee-joint prosthesis
Beginning stability, and promote later period Bone Ingrowth and improve prosthese long-time stability, all have great importance.
Summary of the invention
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of mechanical tight lock construction shin bone of bion knee joint
Platform.
Technical solution of the present invention is summarized as follows:
A kind of mechanical tight lock construction tibial plateau of bion knee joint, including kidney shape platform support 1, in kidney shape platform support to
The upper surface of crook is provided with swallow-tail form convex block 3, and the lateral surface of two oblique branches of swallow-tail form convex block is provided with rearward recess 5,
Kidney shape platform support and the upper surface of the export-oriented crook relative to swallow-tail form convex block are provided with arc bump 2, in arc bump
Lateral surface from top to bottom, is provided with fixation hole 7 and lower fixed hole 8, and the medial surface of arc bump 2 is provided with forward recess 6；Kidney
Hole 10 is provided in the middle part of shape platform support, kidney shape platform support lower surface is connected with handle 4, and handle 4 is lower thin and upper thick reducer pipe；Kidney shape platform
Support lower surface is connect by support plate 11 with the outer surface of handle 4, and hole 10 and 4 internal run-through of handle are arranged；It is set on 4 middle and upper part inner wall of handle
It is equipped with tapped ring flat-plate 19, there are two symmetrical vertical cores 9 for setting on 4 middle and lower part wall of handle, in the two sides of each vertical core 9, respectively
There are two circular holes 16 for setting；Piercing means include: mandril 12, Screw 17, connector sleeve 20 and are pierced into pawl 13；The top of mandril 12
It is connected with nut 22, the middle and upper part of mandril is provided with external screw thread, the smooth setting in the lower part of mandril and outer diameter be less than in mandril,
Top outer diameter, the bottom of mandril have set up tapped hole 18；Connector sleeve 20 includes cylindrical body, in cylindrical body
Lower surface is provided with upward groove 25, and mesoporous 23 is provided at the top of cylindrical body, and mesoporous 23 and upward groove 25 penetrate through
Setting, is provided with 4 apertures 24 vertical with groove long axis direction on cylindrical body；Being pierced into pawl 13 includes by triangular prism, length
The piercing pawl ontology of cube and semicylinder composition, is provided with the convex block with long hole 27 in the lower surface in one face of triangular prism,
The one end for being pierced into pawl ontology is provided with axis hole 26；The external screw thread of the middle and upper part of mandril is threadedly coupled with tapped ring flat-plate 19；
The lower part of mandril is arranged in the mesoporous 23 of connector sleeve 20, and the tapped hole 18 of connector sleeve and mandril is made by Screw 17
Connection；First axle 21 will be pierced into pawl 13 by axis hole 26 and aperture 24 and connect with connector sleeve 20；Second axis 15 sequentially passes through circular hole
16, long hole 27 and circular hole 16 connect piercing pawl 13 with handle 4；The lower end of handle 4 is connect with 14 interference of plug.
The invention has the advantages that
1, a kind of mechanical tight lock construction tibial plateau of bion knee joint can be prepared by machining, and precision is high, is conducive to hand
Art operation.
2, tibial plateau of the invention keeps piercing pawl embedding using " mechanical pressurization " and " hole axle cooperation " co-ordination mechanism
Enter in the cancellous bone and cortex bone of shin bone, tibial plateau be steadily fixed on shin bone, load effect under tibial plateau not
It will appear loosening, to solve the insufficient problem of existing bion knee joint tibial platform initial stability.
3, after tibial plateau of the invention back-outs mandril in revision, during tibial plateau is pulled out, thorn
Entering pawl can automatically return in vertical core, extract tibial plateau smoothly, overhaul conducive to the tibial plateau later period.
4. plug can prevent tibial plateau pad clast from falling into shin bone.
Detailed description of the invention
Fig. 1 is a kind of mechanical tight lock construction tibial plateau stereoscopic schematic diagram of bion knee joint；
Fig. 2 is that a kind of mechanical tightly lock construction tibial plateau of bion knee joint crosses anteroposterior diameter cross-sectional view；
Fig. 3 is a kind of mechanical tight lock construction tibial plateau (no piercing means) shaft side figure of bion knee joint；
Fig. 4 is that mandril and Screw cross centerline sectional view；
Fig. 5 is connector sleeve stereoscopic schematic diagram；
Fig. 6 is piercing means stereoscopic schematic diagram；
Fig. 7 is to be pierced into pawl stereoscopic schematic diagram.
Specific embodiment
The present invention will be further described below with reference to the drawings
A kind of mechanical tight lock construction tibial plateau of bion knee joint, including kidney shape platform support 1, in kidney shape platform support to
The upper surface of crook is provided with swallow-tail form convex block 3, and the lateral surface of two oblique branches of swallow-tail form convex block is provided with rearward recess 5,
Kidney shape platform support and the upper surface of the export-oriented crook relative to swallow-tail form convex block are provided with arc bump 2, in arc bump
Lateral surface from top to bottom, is provided with fixation hole 7 and lower fixed hole 8, and it is (preceding that the medial surface of arc bump 2 is provided with forward recess 6
Tibial plateau pad can be fixed on tibial plateau by groove 6 and rearward recess 5)；Hole 10 is provided in the middle part of kidney shape platform support, kidney shape is flat
Platform support lower surface is connected with handle 4, and handle 4 is that (lower thin and upper thick reducer pipe is conducive to shin bone in surgical procedure lower thin and upper thick reducer pipe
Platform is smoothly installed on shin bone)；Kidney shape platform support lower surface is connect by support plate 11 with the outer surface of handle 4, in hole 10 and handle 4
Portion's perforation setting；Tapped ring flat-plate 19 is provided on 4 middle and upper part inner wall of handle, there are two symmetrical for setting on 4 middle and lower part wall of handle
Vertical core 9 is respectively set in the two sides of each vertical core 9 there are two circular hole 16；Piercing means include: mandril 12, Screw 17, are connected
Female connector 20 and piercing pawl 13；The top of mandril 12 is connected with nut 22, and the middle and upper part of mandril is provided with external screw thread, the lower part of mandril
It is smooth setting and outer diameter be less than mandril in, top outer diameter, the bottom of mandril has set up tapped hole 18；Connection
Set 20 includes cylindrical body, is provided with upward groove 25 in the lower surface of cylindrical body, is provided at the top of cylindrical body
Hole 23, mesoporous 23 and upward groove 25, which penetrate through, to be arranged, and it is small that 4 vertical with groove long axis direction are provided on cylindrical body
Hole 24；Being pierced into pawl 13 includes the piercing pawl ontology being made of triangular prism, cuboid and semicylinder, under one face of triangular prism
Surface is provided with the convex block with long hole 27, and the one end for being pierced into pawl ontology is provided with axis hole 26；The external screw thread of the middle and upper part of mandril
It is threadedly coupled with tapped ring flat-plate 19；The lower part of mandril is arranged in the mesoporous 23 of connector sleeve 20, is made by Screw 17
The connection of the tapped hole 18 of connector sleeve and mandril；First axle 21 will be pierced into pawl 13 and connector sleeve by axis hole 26 and aperture 24
20 connections；Second axis 15 sequentially passes through circular hole 16, long hole 27 and circular hole 16, connect piercing pawl 13 with handle 4；The lower end of handle 4 with
14 interference of plug connection.
The working principle of tibial plateau of the present invention are as follows: clamp upper fixation hole and lower fixed hole with holding handle, guarantee shin bone
Platform is not rotated with mandril, turns mandril 12, and mandril 12 is rotated down by screw thread, is squeezed and is pierced into pawl 13, is pierced into pawl 13 with the
Two axis 15 are supporting point rotation, produce from vertical core 9, continue to turn mandril, will be pierced into pawl and are pierced into tibial cancellous bone and cortex bone.
Claims (1)
1. a kind of mechanical tight lock construction tibial plateau of bion knee joint, including kidney shape platform support (1), it is characterized in that flat in kidney shape
The upper surface of crook is provided with swallow-tail form convex block (3) in platform support, in the lateral surface setting of two oblique branches of swallow-tail form convex block
There are rearward recess (5), kidney shape platform support and the upper surface of the export-oriented crook relative to swallow-tail form convex block are provided with arc bump
(2), the lateral surface of arc bump from top to bottom, fixation hole (7) and lower fixed hole (8) are provided with, in arc bump (2)
Medial surface is provided with forward recess (6)；It being provided with hole (10) in the middle part of kidney shape platform support, kidney shape platform support lower surface is connected with handle (4),
Handle (4) is lower thin and upper thick reducer pipe；Kidney shape platform support lower surface is connect by support plate (11) with the outer surface of handle (4), hole
(10) it is arranged with handle (4) internal run-through；Be provided with tapped ring flat-plate (19) on the inner wall of handle (4) middle and upper part, in handle (4) under
Setting is there are two symmetrical vertical core (9) on portion's wall, in the two sides of each vertical core (9), is respectively set that there are two circular hole (16)；It is pierced into dress
Setting includes: mandril (12), Screw (17), connector sleeve (20) and is pierced into pawl (13)；Mandril is connected with nut at the top of (12)
(22), the middle and upper part of mandril is provided with external screw thread, and the smooth setting in the lower part of mandril and outer diameter be less than in mandril, top outer diameter,
The bottom of mandril has set up tapped hole (18)；Connector sleeve (20) includes cylindrical body, in the following table of cylindrical body
Face is provided with upward groove (25), is provided at the top of cylindrical body mesoporous (23), mesoporous (23) and upward groove (25)
Perforation setting, is provided with 4 apertures (24) vertical with groove long axis direction on cylindrical body；Being pierced into pawl (13) includes by three
The piercing pawl ontology of rib body, cuboid and semicylinder composition is provided with band long hole (27) in the lower surface in one face of triangular prism
Convex block, be pierced into pawl ontology one end be provided with axis hole (26)；The external screw thread of the middle and upper part of mandril and tapped ring flat-plate
(19) it is threadedly coupled；The lower part of mandril is arranged in the mesoporous (23) of connector sleeve (20), by Screw (17) make connector sleeve and
The tapped hole (18) of mandril connects；First axle (21) by axis hole (26) and aperture (24) will piercing pawl (13) with connect
Cover (20) connection；Second axis (15) sequentially passes through circular hole (16), long hole (27) and circular hole (16), makes to be pierced into pawl (13) and handle (4)
Connection；The lower end of handle (4) is connect with plug (14) interference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910308189.3A CN109925099B (en) | 2019-04-17 | 2019-04-17 | Biological knee joint mechanical locking structure tibia platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910308189.3A CN109925099B (en) | 2019-04-17 | 2019-04-17 | Biological knee joint mechanical locking structure tibia platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109925099A true CN109925099A (en) | 2019-06-25 |
| CN109925099B CN109925099B (en) | 2024-03-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910308189.3A Active CN109925099B (en) | 2019-04-17 | 2019-04-17 | Biological knee joint mechanical locking structure tibia platform |
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| EP0010527A1 (en) * | 1978-10-06 | 1980-04-30 | L.I.M.A. Lualdi Industrie MeccanicheAnduis Srl. | Prosthesis for limbs |
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| US20170367837A1 (en) * | 2015-01-07 | 2017-12-28 | Wright Medical Technology, Inc. | Fixation mechanism for an implant |
| US20180042730A1 (en) * | 2015-04-17 | 2018-02-15 | Wright Medical Technology, Inc. | Inbone talar dome with expandable flanges |
| CN210056349U (en) * | 2019-04-17 | 2020-02-14 | 嘉思特华剑医疗器材(天津)有限公司 | Biological knee joint mechanical locking structure tibial plateau |
-
2019
- 2019-04-17 CN CN201910308189.3A patent/CN109925099B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0010527A1 (en) * | 1978-10-06 | 1980-04-30 | L.I.M.A. Lualdi Industrie MeccanicheAnduis Srl. | Prosthesis for limbs |
| JPH0558119U (en) * | 1992-01-20 | 1993-08-03 | 川崎製鉄株式会社 | Artificial knee joint tibial parts |
| JPH07172606A (en) * | 1993-12-22 | 1995-07-11 | Yamato Sewing Mach Co Ltd | Label pickup device |
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| US20090265007A1 (en) * | 2007-11-12 | 2009-10-22 | Dennis Colleran | Vertebral interbody compression implant |
| US20100274359A1 (en) * | 2009-04-22 | 2010-10-28 | Yann Brunnarius | Joint prosthesis attachment system, device and method |
| US20110106268A1 (en) * | 2009-10-30 | 2011-05-05 | Depuy Products, Inc. | Prosthesis for cemented fixation and method for making the prosthesis |
| DE202012100175U1 (en) * | 2012-01-18 | 2012-02-27 | Karl Storz Gmbh & Co. Kg | endoprosthesis |
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| CN109925099B (en) | 2024-03-29 |
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