CN204909727U - Shin bone replacement false body - Google Patents
Shin bone replacement false body Download PDFInfo
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- CN204909727U CN204909727U CN201520593574.4U CN201520593574U CN204909727U CN 204909727 U CN204909727 U CN 204909727U CN 201520593574 U CN201520593574 U CN 201520593574U CN 204909727 U CN204909727 U CN 204909727U
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Abstract
The utility model discloses a shin bone replacement false body, including tibial tray and shin bone pads, wherein shin bone pads be including closing nodal section and the distal end surface opposite with the joint face, and the first recess and the second recess of formation in the distal end surface, tibial tray include the supporting disk that is used for supporting the shin bone pad and has the fixed component, and the supporting disk upper surface has the first pillar and a second pillar of fixed shin bone pad, supporting disk upper portion and shin bone pad lower part interference fit. The utility model discloses a shin bone replacement false body has fine initial stability and long -term stability in use, and this tibial tray is difficult for sinking and rotates, has fine fixed effect between tibial tray and the shin bone pad, and can realize that the lion indicator check use, has further improved to resist to sink the resistance, has improved the life of knee joint, has reduced the turnover rate.
Description
Technical field
The present invention relates to a kind of articular prosthesis, particularly a kind of tibia replacement prosthesis.
Background technology
Knee joint is that human body is comparatively large, complex structure, require high joint to motor function; Total knee replacement kneed wearing and tearing, sufferer or injured surface is removed and the surgical operation replaced with artificial knee joint prosthese, and it has become operation conventional clinically, and achieves significant success in treatment diseases of knee joint.In replacement knee in arthroplasty, must use tibia replacement prosthesis, wherein tibia replacement prosthesis comprises tibia support and tibia pad, and tibia support is for implantation in the tibia of patient, and tibia pad is fixed on tibia support.
Existing artificial tibia replacement prosthesis completely with reference to the anatomical shape of human synovial, meets the daily behavior kinetic characteristic of people, and described knee-joint prosthesis can realize combining closely of tibia support and tibia pad, reduces the distortion of tibia pad, improves service life.But the following technical problem of existing tibial articulating prosthesis ubiquity: 1. tibia support and tibia pad are installed inconvenient, and cooperation requires high, can not use by lion indicator lattice; 2. the impact that tibia support is subject to human bady gravitational is easily sunk and rotates, and itself and tibia pad is departed from, causes knee-joint prosthesis to depart from original position, affects patient and uses; 3. tibia support and tibia pad combine unstable, easily occur to loosen, and can not automatically adjust, affect the service life of knee-joint prosthesis.
Utility model content
In order to solve the problems of the technologies described above, this utility model provides a kind of tibia replacement prosthesis, and this tibia replacement prosthesis not only meets people's daily behavior kinetic characteristic; And tibia replacement prosthesis Stability Analysis of Structures, not easily sink and loosen, can using by lion indicator lattice, long service life.
The concrete technical scheme of this utility model is as follows:
A kind of tibia replacement prosthesis, comprise tibia pad and tibia support, tibia pad comprises: articular surface, is provided with spacing column and is formed with two glenoid cavities in spacing column bottom both sides in the middle of articular surface; The distal surface contrary with articular surface; The perisporium extended between articular surface and described distal surface, perisporium has leading edge, contrary back edge, outer ledge and contrary inside edge; And the first groove formed in described distal surface and the second groove, the first groove extends along the inside on back edge distally surface, and its sidewall is configured with back-off; Second groove extends along the inside that leading edge is distally surperficial, and Y-shaped, its sidewall is formed with projection near leading edge place;
Tibia support comprises for supporting tibia pad and having the supporting disk of fixed component, supporting disk limits forestock edge, contrary butt edge, holder edge, outside and contrary holder edge, inner side, fixed component forms by engaging to the fixing Os Draconis of downward-extension and some ribs bottom supporting disk, supporting disk upper surface has the first pillar and second pillar of fixed tibial pad, first pillar extends along butt edge, the draw-in groove engaged with back-off is formed in it, the inside extension that second pillar is distally surperficial along forestock edge, shape and the second matching grooves, its sidewall is formed with the undercutting coordinated with projection, supporting disk and described tibia pad bottom interference fit, the Tibial osteotomy end face that tibia support bottom limits tibia composition surface and human body matches.
As the further preferred structure of this utility model, the first groove is the butt conical surface with the side that contacts of the first pillar.
Adopt this contact surface of the butt conical surface that tibia pad and tibia support can be made can to make horizontal and vertical minute movement along this contact surface, thus automatically adjust the first groove and the first pillar, keep tibia support and tibia pad to combine more stable, and facilitate tibia pad and tibia support to fasten installation.
Improve further as this utility model, the first bottom portion of groove back edge is formed with taking-up groove.
Taking out the setting of groove is being separated for the ease of tibia support and tibia pad.
As the further preferred structure of this utility model, tibia composition surface comprises the bone cement groove limited by the projection being formed in circumference.
Tibia composition surface and tibia, for placing the medical material bone cement of bone surgery, are inlayed by bone cement groove, thus are firmly fixed on femur by tibia support.
As the further preferred structure of this utility model, tibia composition surface has the titanium coating for inducing bone cell growth to realize biological fixation.
Titanium coating has for inducing bone cell growth to realize biological fixation effect, thus tibia support is firmly fixed on femur.
As the further preferred structure of this utility model, spacing column and fixing Os Draconis are arranged on the same straight line of vertical support dish, and this straight line through the second groove near the antemarginal end points place of perisporium.
Spacing column, fixing Os Draconis and the second groove are positioned on the same straight line of vertical support dish near perisporium antemarginal end points place, make tibia pad indulge stressed being more reasonably transferred on tibia support and by the fixing Os Draconis of tibia support bottom like this to disperse down, farthest reduce tibia pad torsion effect horizontal on supporting disk simultaneously, the service life of tibia replacement prosthesis can be improved.
Improve further as this utility model, tibia pad is vinyon.
As the further preferred structure of this utility model, ribs is height and from top to bottom width ever-reduced fin identical with Os Draconis.
Ribs is height and from top to bottom width ever-reduced fin identical with Os Draconis, can prevent sinking and the rotation of tibia support well.
As the further preferred structure of this utility model, glenoid minimum point drops on the longitudinal section of ribs.
Glenoid minimum point drops on the longitudinal section of ribs, and such condyle of femur can be gone down by ribs dispersion to the active force of tibia pad, improves the steadiness of tibia support and the service life of tibia replacement prosthesis.
As the further preferred structure of this utility model, ribs is provided with the semi-cylindrical hill of longitudinal extension.Rotation and the sinking of tibia support can be prevented further, improve the service life of femoral prosthesis, reduce turnover rate.
Tibia replacement prosthesis provided by the utility model, has good initial stability and life-time service stability, and tibia pad and tibia support structure rationally, and can use by lion indicator lattice; First groove is the butt conical surface with the side that contacts of the first pillar, can automatically adjust, thus keeps tibia support and tibia pad to combine more stable and tibia replacement prosthesis Stability Analysis of Structures; Tibia composition surface and tibia, for placing the medical material bone cement of bone surgery, are inlayed by bone cement groove; Spacing column, fixing Os Draconis and the second groove are positioned on the same straight line of vertical support dish near perisporium antemarginal end points place, and glenoid minimum point drops on the longitudinal section of ribs, rational structure ensure that tibia pad and tibia support stressed more reasonable, add the service life of tibia replacement prosthesis; The vibrational power flow of ribs can prevent sinking and the rotation of tibia support well.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1 tibia pad;
Fig. 2 is embodiment 1 tibia rebasing portion structural representation;
Fig. 3 is the tibia support structural representation of embodiment 1;
Fig. 4 is the tibia support polycrystalline substance schematic diagram of embodiment 1;
Fig. 5 is the structural representation of embodiment 2 tibia support;
Fig. 6 is the structural representation of utility model tibia replacement prosthesis;
Fig. 7 is the partial enlarged drawing of Fig. 6;
Fig. 8 is the structural representation of the tibia support of embodiment 3;
Wherein: 1, tibia pad, 2, tibia support, 11, articular surface, 12, distal surface, 13, perisporium, the 14, first groove, the 15, second groove, 21, supporting disk, 22, fixed component, the 23, first pillar, the 24, second pillar, 25, tibia composition surface, 111, spacing column, 112, glenoid cavity, 113, glenoid cavity, 141, back-off, 142, groove is taken out, 151, projection, 221, fixing Os Draconis, 222, ribs, 223, protruding, 231, draw-in groove, 241, undercutting, 251, bone cement groove.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described.
Embodiment 1
This utility model provides a kind of tibia replacement prosthesis, and as shown in Figures 1 to 4, this tibia replacement prosthesis comprises tibia pad 1 and tibia support 2, and tibia pad 2 is vinyon.Wherein,
Tibia pad 1 comprises: articular surface 11, is provided with spacing column 111 and is formed with two glenoid cavities 112,113 in spacing column 111 two bottom sides in the middle of articular surface 11; The distal surface 12 contrary with articular surface 11; The perisporium 13 extended between articular surface 11 and distal surface 12, perisporium 13 has leading edge, contrary back edge, outer ledge and contrary inside edge; And in distal surface 12 formed the first groove 14 and the second groove 15, first groove 14 along back edge distally surface 12 inside extend, its sidewall is configured with back-off 141, bottom the first groove 14 back edge be formed take out groove 142; Second groove 15 extends along 12 inside that leading edge is distally surperficial, and be roughly Y shape, its sidewall is formed with projection 151 near leading edge place;
Tibia support 2 comprises for supporting tibia pad 1 and having the supporting disk 21 of fixed component 22, supporting disk 21 limits forestock edge, contrary butt edge, holder edge, outside and contrary holder edge, inner side, fixed component 22 forms by engaging to the fixing Os Draconis 221 of downward-extension and some ribs 222 bottom supporting disk 21, wherein
Ribs 222 is height and from top to bottom width ever-reduced fin identical with Os Draconis.The minimum point of glenoid cavity 112,113 drops on the longitudinal section of ribs 222.
Supporting disk 21 upper surface has the first pillar 23 and the second pillar 24 of fixed tibial pad 1, first pillar 23 extends along butt edge, the draw-in groove 231 engaged with back-off 141 is formed in it, second pillar 24 extends along forestock edge to the inside on supporting disk 21 surface, shape and the second groove 15 mate, its sidewall is formed with the undercutting 241 coordinated with projection 151 at forestock edge, supporting disk 21 top and tibia pad 2 bottom interference fit, tibia support 2 bottom limits tibia composition surface 25 and matches with the Tibial osteotomy end face of human body.Tibia composition surface 25 has the titanium coating (not marking in figure) for inducing bone cell growth to realize biological fixation; Fixed component 22 also has the titanium coating for inducing bone cell growth to realize biological fixation.
Wherein, spacing column 111 and fixing Os Draconis 221 are arranged on the same straight line of vertical support dish 21, and this straight line through the second groove 15 near the antemarginal end points place of perisporium 13.
Embodiment 2
This utility model provides a kind of tibia replacement prosthesis, this tibia replacement prosthesis as different from Example 1, wherein, the structure of tibia support 2 as shown in Figure 5, tibia composition surface 25 comprises the bone cement groove 251 limited by the projection being formed in circumference, tibia composition surface 25 and tibia, for placing the medical material bone cement of bone surgery, are inlayed, thus are firmly fixed on femur by tibia support 2 by bone cement groove 251.
Embodiment 3
This utility model provides a kind of tibia replacement prosthesis, and as different from Example 2, as shown in Figure 6 and Figure 7, the first groove 14 is the butt conical surface with the side that contacts of the first pillar 23 to the structure of tibia pad 1 and tibia support 2 to this tibia replacement prosthesis.Adopt this contact surface of the butt conical surface that tibia pad 1 and tibia support 2 can be made can to make horizontal and vertical minute movement along this contact surface, thus automatically adjust the first groove 14 and the first pillar 23, keep tibia support 2 and tibia pad 1 to combine more stable.
Embodiment 4
This utility model provides a kind of tibia replacement prosthesis, as different from Example 3, ribs 222 is provided with the semi-cylindrical hill 223 of longitudinal extension to this tibia replacement prosthesis, can prevent rotation and the sinking of tibia support further, improve the service life of femoral prosthesis, reduce turnover rate.
Finally it should be noted that, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail this utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (10)
1. a tibia replacement prosthesis, comprises tibia pad (1) and tibia support (2), it is characterized in that:
Described tibia pad (1) comprising:
Articular surface (11), is provided with spacing column (111) and is formed with two glenoid cavities (112,113) in spacing column (111) two bottom sides in the middle of described articular surface (11);
The distal surface (12) contrary with described articular surface (11);
The perisporium (13) extended between described articular surface (11) and described distal surface (12), described perisporium (13) has leading edge, contrary back edge, outer ledge and contrary inside edge; The first groove (14) formed in described distal surface (12) and the second groove (15), described first groove (14) along back edge distally surface (12) inside extend, its sidewall is configured with back-off (141); Described second groove (15) extends along (12) inside that leading edge is distally surperficial, and in " Y " shape, its sidewall is formed with projection (151) near leading edge place;
Described tibia support (2) comprises for supporting tibia pad (1) and having the supporting disk (21) of fixed component (22), described supporting disk (21) limits forestock edge, contrary butt edge, holder edge, outside and contrary holder edge, inner side, described fixed component (22) forms by engaging to the fixing Os Draconis (221) of downward-extension and some ribs (222) bottom supporting disk (21), described supporting disk (21) upper surface has the first pillar (23) and second pillar (24) of fixed tibial pad (1), described first pillar (23) extends along butt edge, the draw-in groove (231) engaged with back-off (141) is formed in it, described second pillar (24) extends along forestock edge to the inside on supporting disk (21) surface, shape and the second groove (15) coupling, its sidewall is formed with the undercutting (241) coordinated with projection (151), described supporting disk (21) top and described tibia pad (2) bottom interference fit, described tibia support (2) bottom limits tibia composition surface (25) and matches with the Tibial osteotomy end face of human body.
2. tibia replacement prosthesis according to claim 1, is characterized in that, described first groove (14) is the butt conical surface with the side that contacts of the first pillar (23).
3. tibia replacement prosthesis according to claim 2, is characterized in that, described first groove (14) bottom back edge is formed takes out groove (142).
4. tibia replacement prosthesis according to claim 1, is characterized in that, described tibia composition surface (25) comprises the bone cement groove (251) limited by the projection being formed in circumference (252).
5. tibia replacement prosthesis according to claim 4, is characterized in that, described tibia composition surface (25) has the titanium coating for inducing bone cell growth to realize biological fixation.
6. tibia replacement prosthesis according to claim 1, it is characterized in that, described spacing column (111) and fixing Os Draconis (221) are arranged on the same straight line of vertical support dish (21), and described straight line is through the close antemarginal end points place of perisporium (13) of the second groove (15).
7. tibia replacement prosthesis according to claim 1, is characterized in that, described tibia pad (1) is vinyon.
8. tibia replacement prosthesis according to claim 1, is characterized in that, described ribs (222) is height and from top to bottom width ever-reduced fin identical with Os Draconis.
9. the tibia replacement prosthesis stated according to Claim 8, is characterized in that, the minimum point of described glenoid cavity (112,113) drops on the longitudinal section of ribs (222).
10. tibia replacement prosthesis according to claim 9, is characterized in that, described ribs (222) is provided with the semi-cylindrical hill (223) of longitudinal extension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520593574.4U CN204909727U (en) | 2015-08-03 | 2015-08-03 | Shin bone replacement false body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520593574.4U CN204909727U (en) | 2015-08-03 | 2015-08-03 | Shin bone replacement false body |
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| CN204909727U true CN204909727U (en) | 2015-12-30 |
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| CN201520593574.4U Active CN204909727U (en) | 2015-08-03 | 2015-08-03 | Shin bone replacement false body |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174378A (en) * | 2017-05-19 | 2017-09-19 | 华南理工大学 | One kind rotation clamping type Total knee arthroplasty tibia support and tibial insert assembling structure and implementation method |
| CN113440312A (en) * | 2021-03-10 | 2021-09-28 | 江苏泰州麦迪医疗科技有限公司 | Big wing section knee joint pulley groove false body |
| CN117398221A (en) * | 2023-12-14 | 2024-01-16 | 北京爱康宜诚医疗器材有限公司 | Locking device for artificial knee joint |
-
2015
- 2015-08-03 CN CN201520593574.4U patent/CN204909727U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174378A (en) * | 2017-05-19 | 2017-09-19 | 华南理工大学 | One kind rotation clamping type Total knee arthroplasty tibia support and tibial insert assembling structure and implementation method |
| CN107174378B (en) * | 2017-05-19 | 2023-04-21 | 华南理工大学 | Rotary clamping type full knee replacement tibia support and tibia gasket assembly structure and implementation method |
| CN113440312A (en) * | 2021-03-10 | 2021-09-28 | 江苏泰州麦迪医疗科技有限公司 | Big wing section knee joint pulley groove false body |
| CN117398221A (en) * | 2023-12-14 | 2024-01-16 | 北京爱康宜诚医疗器材有限公司 | Locking device for artificial knee joint |
| CN117398221B (en) * | 2023-12-14 | 2024-04-02 | 北京爱康宜诚医疗器材有限公司 | Locking device for artificial knee joint |
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