CN103792134B - Tibia support testing fatigue frock - Google Patents
Tibia support testing fatigue frock Download PDFInfo
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- CN103792134B CN103792134B CN201210431366.5A CN201210431366A CN103792134B CN 103792134 B CN103792134 B CN 103792134B CN 201210431366 A CN201210431366 A CN 201210431366A CN 103792134 B CN103792134 B CN 103792134B
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- tibia support
- frock
- pressing plate
- shaped pressing
- tibia
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Abstract
The invention discloses a kind of tibia support testing fatigue frock, the requirement of this frock based on YY/T0810.1/ work SO14879-1 " surgical implant---the mensuration of total knee replacement Part I tibia support fatigue behaviour " designs, formed by lower plate, T-shaped pressing plate, half-moon-shaped pressing plate and some screws on collet, tibia support, when forming a cavity after the tibia support that packs wish test between this tibia support and frock, this cavity will be filled with ethylene oxide resin or bone cement. This frock object is tibia support to be securely fixed in and on fatigue tester, to carry out testing fatigue according to standard-required. The present invention is suitable for the tibia support of variety classes, style, different size size; Installation of the present invention and convenient disassembly, can rapidly remove bone cement after test, can realize the Reusability of this frock.
Description
Technical field
The present invention relates to a kind of frock using for artificial joint component test, particularly relate to a kind of tibia support testing fatigue frock.
Background technology
After total knee replacement, tibia support prosthese will be for a long time among human body, bear for a long time the Dynamic And Static Loads producing due to body weight and motion, this load will make tibia support face the risk of fatigue fracture, once tibia support fracture, patient will face and be forced to implement revision procedure for the second time, therefore, guarantee that tibia support has enough mechanical strengths, it is the content that needs emphasis to consider in this part design and manufacture, at present, one of important method whether checking tibia support prosthese has safe enough mechanical strength is according to YY/T0810.1/IS014879-1 " surgical implant---the mensuration of total knee replacement Part I tibia support fatigue behaviour " standard, in given load, under prescriptive procedure, reach the fatigue property test of ten million time, and an important step of carrying out this test is to adopt suitable test fixture, whether the result of use of this Fixture Design directly has influence on test job and can normally carry out, whether test result is effective, testing expense whether economic. the fatigue test frock of the designed use of rough schematic providing based on this standard at present, preparation redundant and complicated, can not reuse, and cannot adapt to easily different brands, specification tibia support prosthese how wide in variety.
Summary of the invention
For problems of the prior art, the test request that the present invention is based on this standard carries out brand-new design, and object is to provide a kind of simple in structure, easy to use, reusable, fatigue property test frock for different size, pattern, different manufacturers tibia support with better compatibility.
For achieving the above object, the present invention takes following design:
A kind of tibia support testing fatigue frock, formed by collet, tibia support lower plate, tibia support train wheel bridge, some, the T-shaped pressing plates of screw, semilune pressing plate, when forming a cavity after the tibia support that packs wish test between this tibia support and frock, this cavity will be filled by ethylene oxide resin or bone cement.
Described collet is provided with bottom thread hole, base cone face, inner conical surface, fixing screw hole and attachment screw hole, bottom thread hole can screw in screw, bottom thread MD2 size is M10～M16, after test, this screw can eject internal taper hole by ethylene oxide resin or bone cement, to get time use ready; Described base cone face and attachment screw hole in order to by frock integral installation on fatigue experimental machine, its form and size can be according to the Interface design manufactures of biomethanics fatigue tester, described inner conical surface small end face diameter D1=15mm～25mm, cone angle t=45 °～60 °, inner conical surface and top hold-down form cavity jointly, for hold bone cement; Attachment screw hole is connected for top hold-down and collet.
Described T-shaped pressing plate has two horizontal slotted holes and two longitudinal slotted holes, and groove, two kinds of slotted holes are wide is 6mm～12mm, laterally slotted hole and longitudinally slotted hole be used for adjusting the screw position on it, groove provides downward form so that observe the position that tibia support is placed below.
While using this frock, first first quarter moon pressing plate is screwed on collet, tibia support is placed on tibia support between lower plate, tibia support locking is clamped with 2 pieces of screws. Before bone cement or ethylene oxide resin solidify, stop up collet lower screw hole with screw, subsequently tibia support assembly is placed in base internal taper hole. Then pour into base internal taper hole until fill up with deployed bone cement or ethylene oxide resin colloid. Afterwards, place on the half-moon-shaped pressing plate of T-shaped pressing plate, adjust screw and tibia support position, make it meet the status requirement specifying in YY/T0810.1/IS014879-1 " surgical implant---the mensuration of total knee replacement Part I tibia support fatigue behaviour " standard. Again, lock each screw, deployed bone cement or ethylene oxide resin colloid are poured into base internal taper hole until fill up whole cavity under semilune pressing plate. Treat that bone cement or ethylene oxide resin are completely curing, remove the upper lower plate of T-shaped pressing plate and clamping tibia support. Finally, frock is together arranged on to fatigue tester design attitude together with the tibia support on fixation. After test completes, from pulling down fatigue test frock, removes by testing machine half-moon-shaped pressing plate,, tibia support together can be ejected together with bone cement or ethylene oxide resin from collet bottom screw-in with screw.
The beneficial effect of tibia support testing fatigue frock of the present invention is: tibia support testing fatigue frock of the present invention is easy to operate each implementation phase, be easy to location, for operating, implements according to step, is easy to grasp; Collet of the present invention, for inner conical designs, is suitable for the tibia support of variety classes, style, and different products can use same tibia support testing fatigue frock, can effectively save like this cost; The present invention is provided with the horizontal and vertical slotted hole that can adjust screw, and the convenient relative position of adjusting each assembly, is therefore applied to the tibia support of different size size, thereby further reduces testing expenses; Installation of the present invention and convenient disassembly, can rapidly remove bone cement after test, can realize like this Reusability of this frock, further saves cost; The present invention is the interface mode design according to ISOTRON8874 biomethanics testing machine, and by change interface modes, the present invention can be applied to other testing machine.
Brief description of the drawings
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention. In the accompanying drawings:
After Fig. 1 is the assembling of tibia support testing fatigue frock of the present invention, the perspective view of bone cement to be filled or ethylene oxide resin;
Fig. 2 is the perspective view of tibia support testing fatigue frock collet of the present invention;
Fig. 3 is the axial cutaway view of tibia support testing fatigue frock collet of the present invention;
Fig. 4 is the schematic perspective view after tibia support testing fatigue frock collet of the present invention and the assembling of half-moon-shaped pressing plate;
Fig. 5 is the perspective view of the T-shaped pressing plate of tibia support testing fatigue frock of the present invention;
Fig. 6 is the schematic diagram after tibia support testing fatigue frock tibia support assembly assembling of the present invention;
Fig. 7 is that tibia support testing fatigue frock of the present invention is filled bone cement or ethylene oxide resin use view afterwards
Detailed description of the invention
Also describe the present invention in detail below with reference to accompanying drawing in conjunction with the embodiments.
As shown in Figure 1, the present invention is made up of collet 1, tibia support lower plate 2, tibia support train wheel bridge 3, some, the T-shaped pressing plates 5 of screw 4, semilune pressing plate 6, and tibia support 7 will be filled by ethylene oxide resin or bone cement with the cavity that frock forms.
As shown in Figure 2 and Figure 3, collet 1 is provided with bottom thread hole 11, base cone face 12, inner conical surface 13, fixing screw hole 14 and attachment screw hole 15 and forms, bottom thread hole 11 can screw in screw, bottom thread MD2 size is M10～M16, test complete, this screw is for ethylene oxide resin or bone cement being ejected to internal taper hole, in order to using next time; Base cone face 12 and attachment screw hole 15 in order to by frock integral installation on fatigue experimental machine, its form and size can be according to the Interface design manufactures of biomethanics fatigue tester; Described inner conical surface 13 small end face diameter D1=15mm～25mm, cone angle t=45 °～60 °, inner conical surface 13 forms cavity jointly with top hold-down, for hold bone cement; Attachment screw hole 15 is connected for top hold-down and collet.
As shown in Figure 4, T-shaped pressing plate has some and 53, the two kinds of wide 6mm～12mm of slotted hole of groove of the some and longitudinal slotted holes 52 of horizontal slotted hole 51. Laterally slotted hole 51 and longitudinal slotted hole 52 are used for adjusting the screw position on it, and groove 53 provides downward form, is convenient to observe the position that tibia support is placed below.
While using this frock, be first fixed on collet 1 by 3 pieces of screws 4 of Fig. 3 first quarter moon pressing plate 6 use.
Afterwards, as shown in Figure 5, tibia support 7 is placed between upper lower plate 2 and 3, tibia support 7 is locked to clamping with 2 pieces of screws.
Afterwards, before bone cement or ethylene oxide resin solidify, stop up collet lower screw hole 11 with screw, tibia support assembly is placed in base internal taper hole 13; With deployed bone cement or ethylene oxide resin colloid perfusion base internal taper hole 13 until fill up. Place T-shaped pressing plate on half-moon-shaped pressing plate, adjust screw and tibia support position, make it meet the status requirement specifying in standard, lock each screw, as shown in Figure 1.
Afterwards, deployed bone cement or ethylene oxide resin colloid are poured into base internal taper hole 13 until fill up whole cavity under semilune pressing plate.
Afterwards, treat that bone cement or ethylene oxide resin are completely curing, remove the upper lower plate of T-shaped pressing plate and clamping tibia support, as shown in Figure 6.
Afterwards, after test completes, from testing machine is pulled down fatigue test frock, remove half-moon-shaped pressing plate,, tibia support together can be ejected together with bone cement or ethylene oxide resin from collet bottom screw-in with screw.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect:
The present invention is easy to operate each implementation phase, be easy to location, for operating, implements according to step, is easy to grasp; Collet of the present invention, for inner conical designs, is suitable for the tibia support of variety classes, style, and different products can use same frock, can effectively save like this cost; The present invention is provided with the horizontal and vertical slotted hole that can adjust screw, and the convenient relative position of adjusting each assembly, is therefore applied to the tibia support of different size size, thereby further reduces testing expenses; Installation of the present invention and convenient disassembly, can rapidly remove bone cement after test, can realize like this Reusability of this frock, further saves cost; The present invention is the interface mode design according to ISOTRON8874 biomethanics testing machine, and by change interface modes, the present invention can be applied to other testing machine.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations. Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. a tibia support testing fatigue frock, by pressing from both sides on collet (1), tibia support lower plate (2), tibia supportPlate (3), some, the T-shaped pressing plates of screw (4) (5), semilune pressing plate (6) composition, described half-moon-shaped pressing plate(6) be fixed on collet (1) by screw (4), place described T-shaped pressing plate (5) and press in described semiluneOn plate (6).
2. tibia support testing fatigue frock according to claim 1, described collet (1) is provided with bottom spiral shellPit (11), base cone face (12), inner conical surface (13), fixing screw hole (14) and attachment screw hole (15),Wherein bottom thread hole (11) size is M10～M16, base cone face (12) small end face diameter D1=15mm～25mm, coneAngle t=45 °～60 °.
3. tibia support testing fatigue frock according to claim 1, described T-shaped pressing plate (5) has horizontal lengthHole (51) and longitudinally slotted hole (52), and groove (53); Two kinds of wide 6mm～12mm that are of slotted hole.
4. tibia support testing fatigue frock according to claim 1, described T-shaped pressing plate (5) is provided with groove(53)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210431366.5A CN103792134B (en) | 2012-11-02 | 2012-11-02 | Tibia support testing fatigue frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210431366.5A CN103792134B (en) | 2012-11-02 | 2012-11-02 | Tibia support testing fatigue frock |
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| Publication Number | Publication Date |
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| CN103792134A CN103792134A (en) | 2014-05-14 |
| CN103792134B true CN103792134B (en) | 2016-05-25 |
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| CN201210431366.5A Active CN103792134B (en) | 2012-11-02 | 2012-11-02 | Tibia support testing fatigue frock |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329557A (en) * | 2014-09-30 | 2015-02-04 | 无锡市羊尖盛裕机械配件厂 | T-shaped plate with enlarged tail end |
| CN110296903A (en) * | 2019-07-17 | 2019-10-01 | 山东省医疗器械产品质量检验中心 | Special-shaped bone plate Mechanics Performance Testing harness and test method |
| CN113974925B (en) * | 2021-11-30 | 2024-04-02 | 天津大学 | Water bath formula knee joint shin bone platform fatigue test device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5733290A (en) * | 1995-12-21 | 1998-03-31 | Johnson & Johnson Professional, Inc. | Quick-release tibial alignment handle |
| EP0956836A1 (en) * | 1998-05-13 | 1999-11-17 | Johnson & Johnson Professional, Inc. | Tibial tray with adjustable keel |
| EP1584309A1 (en) * | 2004-04-05 | 2005-10-12 | Zimmer Technology, Inc. | Mobile bearing unicondylar tibial knee prosthesis |
| CN202947921U (en) * | 2012-11-02 | 2013-05-22 | 北京爱康宜诚医疗器材股份有限公司 | Tibia tray fatigue test assembly |
-
2012
- 2012-11-02 CN CN201210431366.5A patent/CN103792134B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5733290A (en) * | 1995-12-21 | 1998-03-31 | Johnson & Johnson Professional, Inc. | Quick-release tibial alignment handle |
| EP0956836A1 (en) * | 1998-05-13 | 1999-11-17 | Johnson & Johnson Professional, Inc. | Tibial tray with adjustable keel |
| EP1584309A1 (en) * | 2004-04-05 | 2005-10-12 | Zimmer Technology, Inc. | Mobile bearing unicondylar tibial knee prosthesis |
| CN202947921U (en) * | 2012-11-02 | 2013-05-22 | 北京爱康宜诚医疗器材股份有限公司 | Tibia tray fatigue test assembly |
Non-Patent Citations (2)
| Title |
|---|
| 《Evaluation of a testing method for the fatigue performance of total knee tibial trays》;S.P. Ahir et al.;《Journal of Biomechanics》;19991231;第32卷;第1049-1057页 * |
| 《Standard Test Method for Cyclic Fatigue Testing of Metal Tibial Tray Components of Total Knee Joint Replacements》;ASTM Committee;《ASTM International》;20040430;第1-5页 * |
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| CN103792134A (en) | 2014-05-14 |
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Addressee: Beijing AKEC Medical Co.,Ltd. Document name: Notification of Publication and of Entering the Substantive Examination Stage of the Application for Invention |
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Address after: 102200 Beijing science and Technology Park of Changping District Bai Fu Road 10 Applicant after: Beijing AKEC Medical Co., Ltd. Address before: 102200 Beijing science and Technology Park of Changping District Bai Fu Road 10 Applicant before: Beijing AKEC Medical Co.,Ltd. |
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