CN104799976A - Acetabulum prosthesis - Google Patents
Acetabulum prosthesis Download PDFInfo
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- CN104799976A CN104799976A CN201510263176.0A CN201510263176A CN104799976A CN 104799976 A CN104799976 A CN 104799976A CN 201510263176 A CN201510263176 A CN 201510263176A CN 104799976 A CN104799976 A CN 104799976A
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- acetabular
- outer cup
- nail
- liner
- component according
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Abstract
The invention provides an acetabulum prosthesis. The acetabulum prosthesis comprises an acetabulum outer cup and a lining, wherein an inner thread is arranged on the inner surface of the acetabulum outer cup; the outer surface of the lining is provided with an outer thread matched with the inner thread; the acetabulum outer cup is connected with the lining through the inner thread and the outer thread. According to the technical scheme, the problems in the prior art that the machining difficulty of tapered surfaces of the acetabulum outer cup and the lining is great are effectively solved.
Description
Technical field
The present invention relates to artificial prosthesis technical field, in particular to a kind of acetabular component.
Background technology
The sealed form of existing acetabular component outer cup and liner mainly matches with the form of the conical surface and forms the conical surface and lock.While conical surface locking, also can add snap ring in inside and fixedly prevent it from deviating to liner.Particularly, make anti-spin slot at the end face of outer cup and the outer of liner, rotate in a circumferential direction to prevent liner and cause.Simultaneously, after fitting with sclerotin in acetabular component outer cup surface, in order to make acetabular component and outer cup surface form incipient stability, adopting screw by the screwed hole above outer cup, acetabular component outer cup to be fixed on surface of bone, forming melting interface to make outer cup surface with osteocyte.
But boring lock form in prior art, to there is bevel required precision greatly highly difficult, and outer cup and liner are bored to join and be difficult to settle at one go, easily form void and join insecure, liner have postoperative deviate from risk.In addition, there is the problem that liner not easily takes out when secondary revision procedure in the structure of prior art, though liner take out after the inner conical surface of outer cup be also easy to sustain damage, have to outer cup to be taken out together.On the initial stability of biotype outer cup, the operation be screwed is not very convenient, has certain operation easier, in addition nail is twisted inclined risk.
Summary of the invention
Main purpose of the present invention is to provide a kind of acetabular component, with the problem that the bevel difficulty solving acetabular outer cup and liner in prior art is large.
To achieve these goals, the invention provides a kind of acetabular component, comprising: acetabular outer cup, the inner surface of acetabular outer cup is provided with female thread; Liner, the outer surface of liner is provided with the external screw thread with screw-internal thread fit; Wherein, acetabular outer cup and liner are linked together by female thread and external screw thread.
Further, the wall of cup of acetabular outer cup is provided with multiple nail, in each nail, is provided with a nail.
Further, nail inner sleeve has damping ring, and nail is arranged in damping ring.
Further, interference fit between nail and damping ring.
Further, the outer end of nail has conehead.
Further, the circumferential exterior surface of conehead is provided with anticreep tooth.
Further, the inner surface of acetabular outer cup is also provided with bright finish in arc, and in arc, bright finish is positioned at the side deviating from the opening of acetabular outer cup of female thread, and nail is positioned on arc bright finish.
Further, liner has the outer bright finish with the arc of bright finish shape adaptation in arc.
Further, female thread and external screw thread are the taper screw thread of suitable Changeable Lead.
Further, female thread and external screw thread are suitable trapezoidal thread.
Apply technical scheme of the present invention, acetabular outer cup and liner are cooperated together by female thread and external screw thread, and above-mentioned connected mode ensure that and is connected firmly between acetabular outer cup and liner, and liner can not be deviate from.As shown in the above, technical scheme of the present invention can to coordinate with liner at guarantee acetabular outer cup and firmly effectively reduces difficulty of processing under prerequisite.In addition, owing to being threaded connection, when secondary revision procedure, liner can pass easily through supporting operation tool and take out from acetabular outer cup, and meanwhile, aforesaid operations can not damage acetabular outer cup.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the elevational schematic of the embodiment according to acetabular component of the present invention; And
Fig. 2 shows the C place enlarged diagram of the acetabular component of Fig. 1.
Wherein, above-mentioned accompanying drawing comprises the following drawings labelling:
10, acetabular outer cup; 11, female thread; 12, nail; 13, damping ring; 20, liner; 21, external screw thread; 30, nail.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1, the acetabular component of the present embodiment comprises: acetabular outer cup 10 and liner 20.The inner surface of acetabular outer cup 10 is provided with female thread 11, and the outer surface of liner 20 is provided with the external screw thread 21 coordinated with female thread 11.Acetabular outer cup 10 is linked together by female thread 11 and external screw thread 21 with liner 20.
The technical scheme of application the present embodiment, acetabular outer cup 10 and liner 20 are cooperated together by female thread 11 and external screw thread 21, and above-mentioned connected mode ensure that and is connected firmly between acetabular outer cup 10 and liner 20, and liner 20 can not be deviate from.As shown in the above, the technical scheme of the present embodiment can to coordinate with liner 20 at guarantee acetabular outer cup 10 and firmly effectively reduces difficulty of processing under prerequisite.In addition, owing to being threaded connection, when secondary revision procedure, liner 20 can pass easily through supporting operation tool and take out from acetabular outer cup 10, and meanwhile, aforesaid operations can not damage acetabular outer cup 10.
As shown in Figure 1, in the present embodiment, the wall of cup of acetabular outer cup 10 is provided with multiple nail 12, in each nail 12, is provided with a nail 30.This ensures that thering nail 30 acetabular outer cup 10 and liner 20 are twisted friction tight while can hammer in bone by the extruding of liner 20, this not only ensure that acetabular component initial stability in vivo, and a step of fixing of the cooperation of liner 20 and acetabular outer cup 10 and acetabular outer cup 10 completes.In above process, multiple nail 30 can be extruded simultaneously hammer in bone, the unbalance loading problem caused because force degree is different when can effectively avoid like this screwing screw in prior art successively.
As shown in Figure 2, in the present embodiment, nail 12 inner sleeve has damping ring 13, and nail 30 is arranged in damping ring 13.The increase of damping ring 13 ensure that nail 30 stablizing in nail 12.Preferably adopt interference fit between nail 30 and damping ring 13, can ensure that nail 30 can not come off or conjugate from nail 12 so further.
As shown in Figure 2, in the present embodiment, the outer end of each nail 30 has conehead.Said structure ensure that nail 30 successfully can enter the position that need coordinate and be fixed.
As shown in Figure 2, in the present embodiment, the circumferential exterior surface of conehead is provided with anticreep tooth.The setting of anticreep tooth makes acetabular outer cup 10 at its fixed position difficult drop-off, more firm.
As shown in Figure 1, in the present embodiment, the inner surface of acetabular outer cup 10 and the outer surface of liner 20 are mutually adaptive surface.The inner surface of acetabular outer cup 10 is also provided with bright finish in arc, and in arc, bright finish is positioned at the side deviating from the opening of acetabular outer cup 10 of female thread 11, and nail 12 is positioned on arc bright finish.In above-mentioned arc, bright finish is simpler than helicitic texture processing, and cost is lower.
As shown in Figure 1, in the present embodiment, liner 20 has the outer bright finish with the arc of bright finish shape adaptation in arc.The outer bright finish handling ease of arc of this structure, meanwhile, when hammering into nail 30, the outer bright finish of arc contacts nail 30 uniformly, and this makes nail 30 uniform force, and then firm the fixing of acetabular outer cup 10 energy.
As shown in Figure 1, in the present embodiment, female thread 11 and external screw thread 21 are the taper screw thread of suitable Changeable Lead.The present embodiment is by together with being screwed Changeable Lead screw thread with taper, the contour structures of acetabular outer cup 10 and liner 20 is complied with in the setting of cone structure, the screw thread of Changeable Lead can ensure the locking of acetabular outer cup 10 and liner 20, further ensure acetabular outer cup 10 to be like this connected firmly with liner 20, and acetabular outer cup 10 and liner 20 still have intensity definitely.
As shown in Figure 1, in the present embodiment, female thread 11 and external screw thread 21 are suitable trapezoidal screw thread.The chip that the wearing and tearing that this structure efficiently avoid thread produce and injury that health is caused.In addition, trapezoidal ridge structure improves the rigidity of the thread of acetabular outer cup 10 and liner 20, further improves the locking ability of acetabular outer cup 10 and liner 20.
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 done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an acetabular component, is characterized in that, comprising:
Acetabular outer cup (10), the inner surface of described acetabular outer cup (10) is provided with female thread (11);
Liner (20), the outer surface of described liner (20) is provided with the external screw thread (21) coordinated with described female thread (11);
Wherein, described acetabular outer cup (10) is linked together by described female thread (11) and described external screw thread (21) with described liner (20).
2. acetabular component according to claim 1, is characterized in that, the wall of cup of described acetabular outer cup (10) is provided with multiple nail (12), is provided with a nail (30) in each described nail (12).
3. acetabular component according to claim 2, is characterized in that, described nail (12) inner sleeve has damping ring (13), and described nail (30) is arranged in described damping ring (13).
4. acetabular component according to claim 3, is characterized in that, interference fit between described nail (30) and described damping ring (13).
5. the acetabular component according to any one in claim 2 to 4, is characterized in that, the outer end of described nail (30) has conehead.
6. acetabular component according to claim 5, is characterized in that, the circumferential exterior surface of described conehead is provided with anticreep tooth.
7. acetabular component according to claim 2, it is characterized in that, the inner surface of described acetabular outer cup (10) is also provided with bright finish in arc, in described arc, bright finish is positioned at the side deviating from the opening of described acetabular outer cup (10) of described female thread (11), and described nail (12) is positioned on described arc bright finish.
8. acetabular component according to claim 7, is characterized in that, described liner (20) has the outer bright finish with the arc of bright finish shape adaptation in described arc.
9. acetabular component according to claim 1, is characterized in that, the taper screw thread that described female thread (11) and described external screw thread (21) are suitable Changeable Lead.
10. the acetabular component according to claim 1 or 9, is characterized in that, described female thread (11) and described external screw thread (21) are suitable trapezoidal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510263176.0A CN104799976A (en) | 2015-05-21 | 2015-05-21 | Acetabulum prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510263176.0A CN104799976A (en) | 2015-05-21 | 2015-05-21 | Acetabulum prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104799976A true CN104799976A (en) | 2015-07-29 |
Family
ID=53685483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510263176.0A Pending CN104799976A (en) | 2015-05-21 | 2015-05-21 | Acetabulum prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104799976A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174380A (en) * | 2017-05-25 | 2017-09-19 | 北京爱康宜诚医疗器材有限公司 | Acetabular component |
| CN110584839A (en) * | 2019-10-09 | 2019-12-20 | 北京爱康宜诚医疗器材有限公司 | Acetabular prosthesis |
| CN113749827A (en) * | 2021-11-05 | 2021-12-07 | 北京爱康宜诚医疗器材有限公司 | Acetabular prosthesis |
| CN117959040A (en) * | 2024-03-29 | 2024-05-03 | 天津正天医疗器械有限公司 | Clasp and semi-hip joint replacement bipolar head device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2390514A1 (en) * | 1999-11-19 | 2001-05-25 | Sudimplant Chirurgie | Expansible acetabular prosthesis with double mobility |
| CA2473074A1 (en) * | 2003-08-27 | 2005-02-27 | Zimmer Technology, Inc. | Hip prosthesis with a modular acetabular cup assembly |
| CN101420911A (en) * | 2006-02-06 | 2009-04-29 | 康复米斯公司 | Selectable arthroplasty device of patient and surgical instrument |
| EP2574310A2 (en) * | 2011-09-30 | 2013-04-03 | DePuy Products, Inc. | Self-centering, anti-seizing acetabular liner |
| CN203291081U (en) * | 2013-06-24 | 2013-11-20 | 袁伟 | Multi-spine lock-pin type artificial acetabular cup prosthesis |
| CN203790083U (en) * | 2013-12-27 | 2014-08-27 | 北京爱康宜诚医疗器材股份有限公司 | Assembly type acetabulum prosthesis |
| CN204671323U (en) * | 2015-05-21 | 2015-09-30 | 北京爱康宜诚医疗器材股份有限公司 | Acetabular component |
-
2015
- 2015-05-21 CN CN201510263176.0A patent/CN104799976A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2390514A1 (en) * | 1999-11-19 | 2001-05-25 | Sudimplant Chirurgie | Expansible acetabular prosthesis with double mobility |
| CA2473074A1 (en) * | 2003-08-27 | 2005-02-27 | Zimmer Technology, Inc. | Hip prosthesis with a modular acetabular cup assembly |
| CN101420911A (en) * | 2006-02-06 | 2009-04-29 | 康复米斯公司 | Selectable arthroplasty device of patient and surgical instrument |
| EP2574310A2 (en) * | 2011-09-30 | 2013-04-03 | DePuy Products, Inc. | Self-centering, anti-seizing acetabular liner |
| CN203291081U (en) * | 2013-06-24 | 2013-11-20 | 袁伟 | Multi-spine lock-pin type artificial acetabular cup prosthesis |
| CN203790083U (en) * | 2013-12-27 | 2014-08-27 | 北京爱康宜诚医疗器材股份有限公司 | Assembly type acetabulum prosthesis |
| CN204671323U (en) * | 2015-05-21 | 2015-09-30 | 北京爱康宜诚医疗器材股份有限公司 | Acetabular component |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174380A (en) * | 2017-05-25 | 2017-09-19 | 北京爱康宜诚医疗器材有限公司 | Acetabular component |
| CN110584839A (en) * | 2019-10-09 | 2019-12-20 | 北京爱康宜诚医疗器材有限公司 | Acetabular prosthesis |
| CN113749827A (en) * | 2021-11-05 | 2021-12-07 | 北京爱康宜诚医疗器材有限公司 | Acetabular prosthesis |
| CN117959040A (en) * | 2024-03-29 | 2024-05-03 | 天津正天医疗器械有限公司 | Clasp and semi-hip joint replacement bipolar head device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
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Application publication date: 20150729 |