CN204709082U - A kind of combined type artificial hip cotyle cup - Google Patents
A kind of combined type artificial hip cotyle cup Download PDFInfo
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- CN204709082U CN204709082U CN201520316004.0U CN201520316004U CN204709082U CN 204709082 U CN204709082 U CN 204709082U CN 201520316004 U CN201520316004 U CN 201520316004U CN 204709082 U CN204709082 U CN 204709082U
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Abstract
This utility model relates to a kind of combined type artificial hip cotyle cup, and described artificial hip joint mortar cup is inner concave shape semicircle arcuation, comprises skin and internal layer; Described skin has screw hole, and described skin is made up of biocompatible material; Described internal layer is made up of polyether-ether-ketone or derivatives thereof macromolecular material, and described internal layer and described skin are integrally fixed structure; Described screw hole is covered by described internal layer.PEEK internal layer surface in this utility model structure can fall stress concentration from the combination of different mortar cup liner outer surface, decreases the risk of fretting wear and liner breakage; Or PEEK internal layer surface is direct and femoral head prosthesis outer surface forms friction pair, reduces the wearing and tearing of femoral head prosthesis outer surface.PEEK inner layer sheet mask in this utility model mechanism has the advantage of corrosion-resistant, resistance to fretting wear, avoids the metal ion of the metal prostheses of current harmful to human and the release of microgranule.
Description
Technical field
This utility model relates to a kind of medical rehabilitation instrument, more specifically, relates to a kind of combined type artificial hip cotyle cup.
Background technology
Acetabular cup prosthesis is widely used in replacement of total hip.When having Cranial defect or sclerotin is not good enough, more unified method optionally uses bone screw in place of safety at present, this can increase initial prosthese stability, and then promote Bone Ingrowth (the Tabata T of prosthese, Kaku N, Hara K, Tsumura H.Initial stability of cementless acetabular cups:press-fitand screw fixation interaction-an in vitro biomechanical study.Eur J OrthopSurg Traumatol.2015Apr; 25 (3): 497-502.doi:10.1007/s00590-014-1571-4.Epub 2014Nov 25).But, vacant screw hole helps the joint fluid of conveyer belt microgranule bone can be caused to dissolve to during bone prosthese interface, joint fluid or body fluid can impact bone interface under the effect of joint power simultaneously, further bone is caused to dissolve (Walter WL, Clabeaux J, Wright TM, WalshW, Walter WK, Sculco TP.Mechanisms for pumping fluid through cementlessacetabular components with holes.J Arthroplasty.2005Dec; 20 (8): 1042-8).The existing metallic film maybe can opened by closing cock is to reach the patent of closed vacant screw at present, but its existence should not be opened and easily produce the critical defects such as metal fragment.In recent years, a kind of novel double-movable acetabular cup is since Gilles Bousquest and Andre Rambert (the DeMartino I seventies in last century, Triantafyllopoulos GK, Sculco PK, Sculco TP, Dual mobility cupsin total hip arthroplasty.World J Orthop.2014Jul 18; 5 (3): 180-7.doi:10.5312/wjo.v5.i3.180.eCollection 2014) again attention has been obtained since invention, but as other integral type acetabular cups, also there is not the design of effectively opening screw hole from internal joint face at present.This have impact on it and clinically to apply widely.In addition, should to be that glass top elastic modelling quantity is lower make it closer to human bone to desirable acetabular cup, and cup edge should have sufficiently high elastic modelling quantity to make the distortion of inserting rear cup become minimum.And this just clinically in the urgent need to desirable acetabular cup.
Meanwhile, it is fixing that above-mentioned joint outer lining is generally used for bone, and the liner of another part is formed by high-abrasive material, and form the friction lining of slip between femoral head.In modern hip replacement, the selection of friction lining has multiformity, comprises ultra-high molecular weight polyethylene (UHMWPE), ceramic material and CoCrMo alloy etc.The design General Requirements of modern acetabular cup can hold polyethylene liner and can hold again pottery or CoCrMo liner.The internal structure of acetabular cup outer lining and the external structure of friction lining thus, size, the coupling of shape is most important.If coupling tolerance is excessive, so can cause between contact surface, producing stress to concentrate and fine motion, thus bring corrosion, risk (the Agne MT of wearing and tearing, Underwood RJ, Kocagoz SB, MacDonaldDW, Day JS, Parvizi J, Kraay MJ, Mont MA, Klein GR, Cates HE, Kurtz SM.Is there material loss at the backside taper in modular CoCr acetabular liners? Clin Orthop Relat Res.2015Jan; 473 (1): 275-85.doi:10.1007/s11999-014-3982-2.Epub 2014Oct 16).When friction lining is pottery, fine motion and stress are concentrated and may be increased the risk of fragmentation of liner.
In recent years, polyether-ether-ketone (PEEK) macromolecular material has been widely used in the implants in vivo prostheses such as spinal column with the biocompatibility of its high strength and high stability.Because it is corrosion-resistant, PEEK is desirable assembly connecting material, but, there is not the report of PEEK macromolecular material for hip cotyle cup at present.
Therefore, a kind of novel and desirable artificial hip joint mortar cup that can overcome above-mentioned shortcoming is the prosthese in expecting.
Utility model content
For the technical problem of above-mentioned solution, the purpose of this utility model is to provide a kind of combined type artificial hip cotyle cup.
In order to realize above-mentioned utility model, this utility model adopts following technical scheme:
A kind of combined type artificial hip cotyle cup, described artificial hip joint mortar cup is inner concave shape semicircle arcuation, comprises skin and internal layer; Described skin has screw hole, and described skin is made up of biocompatible material; Described internal layer is made up of polyether-ether-ketone or derivatives thereof macromolecular material, and described internal layer and described skin are integrally fixed structure; Described screw hole is covered by described internal layer.
Further, described biocompatible material be vitallium, titanium or titanium alloy, tantalum or tantalum alloy, magnesium or magnesium alloy, rustless steel and zirconium-niobium alloy one or more.
Further, described skin is the coating that Bone Ingrowth is convenient in loose structure or described outer field outer surface spraying.
Further, described coating be hydroxyapatite, tantalum or tantalum alloy, magnesium or magnesium alloy and zirconium-niobium alloy one or more.
Further, the quantity of described screw hole is one or more; The convenient labelling identifying and hole location is made with at the described internal layer place relative to described screw hole location.
Further, described labelling is concave architecture or color mark.
Further, the edge part of described artificial hip joint mortar cup comprises rib.
Further, described rib is high elastic modulus becket; The material of described becket is CoCrMo alloy or rustless steel.
Further, the inner surface of described internal layer is standard spherical structure, and described internal layer and acetabular cup liner form sliding friction surface.
Further, the inner surface of described internal layer is non-uniform spherical structure, and described internal layer and acetabular cup liner are assembly type fixed structure.
Owing to adopting above technical scheme, the beneficial effects of the utility model are:
1) the combined type artificial hip cotyle cup that provides of this utility model, owing to offering screw hole as required in operation, solves vacant screw hole and causes bone problems of dissolution, and the PEEK layer simultaneously in screw hole plays sealing function after screw is fixing.
2) the PEEK internal layer of combined type artificial hip cotyle cup that this utility model provides can fall stress concentration from the combination of different mortar cup liner outer surface, thus reduces the risk or directly and femoral head prosthesis outer surface formation friction pair of fretting wear and liner breakage.Particularly because acetabular cup edge part has rib, and top elastic modelling quantity is lower makes it closer to human bone, Post operation, acetabular cup is after screw and human body are fixed, the lower human bone of more fitting of top elastic modelling quantity, and acetabular cup edge has higher elastic modelling quantity, the acetabular cup in operation and in using is firmer, is not easy distortion.
3) the PEEK internal layer of combined type artificial hip cotyle cup that this utility model provides has the advantage of corrosion-resistant, resistance to fretting wear, therefore can avoid the metal ion of harmful to human and the release of microgranule.
4) the screw hole concave shape of combined type artificial hip cotyle cup that this utility model provides be more convenient for performing the operation in Drilling operation location.
Accompanying drawing explanation
The structural representation of the combined type artificial hip cotyle cup that Fig. 1 provides for this utility model;
The PEEK internal layer of the combined type artificial hip cotyle cup that Fig. 2 provides for this utility model and acetabular cup liner form the structural representation of sliding friction surface;
Fig. 3 is the structural representation that the PEEK internal layer of the combined type artificial hip cotyle cup that this utility model provides and acetabular cup liner form assembly type fixed structure.
Description of reference numerals
1 skin, 2 screw holes, 3 internal layers, 4 ribs, 5 acetabular cup liners, 6 artificial thigh bone bulbs, 7 concave architecture.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, this utility model is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain this utility model, and be not used in restriction this utility model.
As shown in Figure 1, a kind of combined type artificial hip cotyle cup that this utility model provides is inner concave shape semicircle arcuation, comprises outer 1 and internal layer 3; Its ectomesoderm 1 has screw hole 2, and outer 1 is made up of biocompatible material; Internal layer 3 is made up of polyether-ether-ketone or derivatives thereof macromolecular material, and internal layer 3 and outer 1 is integrally fixed structure; Screw hole 2 is covered by described internal layer.
In technique scheme, biocompatible material be vitallium, titanium or titanium alloy, tantalum or tantalum alloy, magnesium or magnesium alloy, rustless steel and zirconium-niobium alloy one or more.
In technique scheme, skin 1 is that the outer surface of loose structure or skin 1 sprays the coating being convenient to Bone Ingrowth; Described coating be hydroxyapatite, tantalum or tantalum alloy, magnesium or magnesium alloy and zirconium-niobium alloy one or more.
In technique scheme, the quantity of screw hole 2 is one or more; The convenient labelling identifying and hole location is made with at internal layer 3 place relative to screw hole 2 position; Again as shown in Figure 1, labelling is concave architecture 7.
In technique scheme, labelling also can be color mark.
In technique scheme, referring again to Fig. 1, the rib 4 of artificial hip joint mortar cup is high elastic modulus becket; The material of described becket is CoCrMo alloy or rustless steel.
As shown in Figure 2, the PEEK internal layer 3 of the combined type artificial hip cotyle cup that provides of this utility model forms sliding friction surface with acetabular cup liner 5.Referring again to Fig. 2, PEEK internal layer 3 is standard spherical structure, and PEEK internal layer 3 forms sliding friction structure with the outer surface of acetabular cup liner 5, is spherical first articular surface, the inner surface of acetabular cup liner 5 and the outer surface of artificial thigh bone bulb 6 form sliding friction structure, are spherical second joint face.First articular surface and second joint face define two movable joint face, and two movable joint not only increases the mobility of artificial joint, and the more important thing is the articular surface that can coefficient of friction selected voluntarily low.
In technique scheme, acetabular cup liner 5 is made up of ultra-high molecular weight polyethylene (UHMWPE), and artificial thigh bone bulb 6 adopts PEEK, CoCrMo alloy or ceramic material.
In such scheme, two articular surfaces form two sliding connection structure.Also have a kind of single sliding connection structure, PEEK internal layer 3 directly and artificial thigh bone bulb 6 form Gliding joint face.
As shown in Figure 3, the PEEK internal layer 3 of the combined type artificial hip cotyle cup that provides of this utility model forms assembly type fixed structure with acetabular cup liner 5.Be non-uniform spherical structure referring again to Fig. 3, PEEK internal layer 3, therefore, PEEK internal layer 3 can not slide over each other with the contact surface of acetabular cup liner 5, and faying face only has fine motion friction.Acetabular cup liner 5 and artificial thigh bone bulb 6 form Gliding joint face.
In technique scheme, acetabular cup liner 5 is made up of ultra-high molecular weight polyethylene (UHMWPE), and artificial thigh bone bulb 6 adopts PEEK, CoCrMo alloy or ceramic material.
This utility model adds PEEK internal layer, and significantly reduce the fretting wear of manual acetabulum cup liner 5 directly and between metal outer, PEEK material has corrosion resistant advantage simultaneously, therefore, can avoid the metal ion of harmful to human and the release of microgranule.
In addition, the PEEK internal layer 3 (or being called inwall) of combined type high-molecular organic material artificial hip joint mortar cup that this utility model provides and the combination in differentiated friction face can fall stress concentration, thus reduce the risk of fretting wear and liner breakage.
The foregoing is only preferred embodiment of the present utility model, be not used for limiting practical range of the present utility model; If do not depart from spirit and scope of the present utility model, this utility model is modified or equivalent to replace, in the middle of the protection domain that all should be encompassed in this utility model claim.
Claims (10)
1. a combined type artificial hip cotyle cup, is characterized in that, described artificial hip joint mortar cup is inner concave shape semicircle arcuation, comprises skin and internal layer; Described skin has screw hole, and described skin is made up of biocompatible material; Described internal layer is made up of polyether-ether-ketone or derivatives thereof macromolecular material, and described internal layer and described skin are integrally fixed structure; Described screw hole is covered by described internal layer.
2. combined type artificial hip cotyle cup according to claim 1, is characterized in that, described biocompatible material be vitallium, titanium or titanium alloy, tantalum or tantalum alloy, magnesium or magnesium alloy, rustless steel and zirconium-niobium alloy one or more.
3. combined type artificial hip cotyle cup according to claim 1, is characterized in that, described skin is the coating that Bone Ingrowth is convenient in loose structure or described outer field outer surface spraying.
4. combined type artificial hip cotyle cup according to claim 3, is characterized in that, described coating be hydroxyapatite, tantalum or tantalum alloy, magnesium or magnesium alloy and zirconium-niobium alloy one or more.
5. combined type artificial hip cotyle cup according to claim 1, is characterized in that, the quantity of described screw hole is one or more; The convenient labelling identifying and hole location is made with at the described internal layer place relative to described screw hole location.
6. combined type artificial hip cotyle cup according to claim 5, is characterized in that, described labelling is concave architecture or color mark.
7. combined type artificial hip cotyle cup according to claim 1, is characterized in that, the edge part of described artificial hip joint mortar cup comprises rib.
8. combined type artificial hip cotyle cup according to claim 7, is characterized in that, described rib is high elastic modulus becket; The material of described becket is CoCrMo alloy or rustless steel.
9. combined type artificial hip cotyle cup according to claim 1, is characterized in that, the inner surface of described internal layer is standard spherical structure, and described internal layer and acetabular cup liner form sliding friction surface.
10. combined type artificial hip cotyle cup according to claim 1, is characterized in that, the inner surface of described internal layer is non-uniform spherical structure, and described internal layer and acetabular cup liner are assembly type fixed structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520316004.0U CN204709082U (en) | 2015-05-15 | 2015-05-15 | A kind of combined type artificial hip cotyle cup |
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| CN201520316004.0U CN204709082U (en) | 2015-05-15 | 2015-05-15 | A kind of combined type artificial hip cotyle cup |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105030380A (en) * | 2015-05-15 | 2015-11-11 | 江苏奥康尼医疗科技发展有限公司 | Combined artificial hip joint cup |
| CN107198596A (en) * | 2016-03-18 | 2017-09-26 | 重庆润泽医药有限公司 | A kind of acetabular cup |
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2015
- 2015-05-15 CN CN201520316004.0U patent/CN204709082U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105030380A (en) * | 2015-05-15 | 2015-11-11 | 江苏奥康尼医疗科技发展有限公司 | Combined artificial hip joint cup |
| WO2016184293A1 (en) * | 2015-05-15 | 2016-11-24 | 江苏奥康尼医疗科技发展有限公司 | Acetabular socket of composite artificial hip joint |
| CN107198596A (en) * | 2016-03-18 | 2017-09-26 | 重庆润泽医药有限公司 | A kind of acetabular cup |
| CN107198596B (en) * | 2016-03-18 | 2020-05-26 | 重庆润泽医药有限公司 | Acetabular cup |
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| C14 | Grant of patent or utility model | ||
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Effective date of registration: 20181212 Address after: Room 494, 4-storey A, No. 84-86-2 Jinghua Road, Xujing Town, Qingpu District, Shanghai, 2010 Patentee after: Shanghai active biotechnology service center Address before: Room 606, Room 9, Changchun North Road, Chengxiang Town, Taicang City, Jiangsu Province, 215400 Patentee before: JIANGSU OKANI MEDICAL TECHNOLOGY CO., LTD. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20190305 Address after: 215000 East of No. 52 Workshop of Chuangdu Industrial Workshop, Loujinbei District, Suzhou Industrial Park, Jiangsu Province Patentee after: Suzhou Zhongke Biomedical Material Co., Ltd. Address before: Room 494, 4-storey A, No. 84-86-2 Jinghua Road, Xujing Town, Qingpu District, Shanghai, 2010 Patentee before: Shanghai active biotechnology service center |