CN202724038U - Stair-shaped sleeve - Google Patents
Stair-shaped sleeve Download PDFInfo
- Publication number
- CN202724038U CN202724038U CN 201220014507 CN201220014507U CN202724038U CN 202724038 U CN202724038 U CN 202724038U CN 201220014507 CN201220014507 CN 201220014507 CN 201220014507 U CN201220014507 U CN 201220014507U CN 202724038 U CN202724038 U CN 202724038U
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- CN
- China
- Prior art keywords
- stair
- shaped sleeve
- oversleeve
- utility
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a stair-shaped sleeve, belonging to an assembling biological type femoral stem. The stair-shaped sleeve is designed like stairs and the height of each stair is 1.5 mm. After the stair-shaped sleeve is implanted, the shear stress of a femur of the stair-shaped sleeve can be effectively changed into the crushing stress, thereby effectively reducing the risk of proximal femur splitting and preventing the case of proximal femur stress shielding.
Description
Technical field
This utility model relates to a kind of orthopaedics implant, particularly a kind of accessory that is applicable to the biotype prosthese of the diseases (being called for short first hip) such as congenital hip dysplasia.
Background technology
Prosthese for Replacement of Hip Joint, when the operation of some first hip cases or some femurs deformity case, conventional handle body is difficult to satisfy requirements of operation substantially, also or easily femur is played splitting, postoperative poor stability can situation occur in art, these problems are perplexing putting to good use of special case prosthesis replacement always.So be badly in need of at present a kind of Novel thighbone handle, can fully guarantee in art, to reduce in the hip replacement risk of femur splitting, again can be at long-term fixing and tight prosthese in human body after the displacement, thus the service life of hip prosthesis in human body improved.
The utility model content
The purpose of this utility model is that defects provides a kind of formerly hip patient's Primary replacement or can effectively fix the prosthese that can not make the femur splitting when overhauling in order to overcome.
For achieving the above object, this utility model is taked following design:
The notch cuttype oversleeve adopts inside and outside bicone design, and inner cone cooperates with the handle bulk phase, and outer cone and pulp cavity form and be press-fitted, and can effectively prevent the sinking of prosthese later stage; And notch cuttype design can be well be converted into compressive stress with prosthese to the shearing force of femur, solves the situation generation of stress shielding and femur splitting; In addition, can better satisfy the fixing of near-end with the design of the span and revolve with anti-, be to be press-fitted closelyr, and stability at later stage is better.
The beneficial effects of the utility model are:
This utility model stepped design type oversleeve, after adopting above design, by adopting the notch cuttype design, prosthese is converted into compressive stress to the shearing force of near end of thighbone, the situation that solves stress shielding and femur splitting occurs, thereby makes postoperative can obtain better stability
This utility model design concept is advanced, simple in structure, fully uses the mechanical fasteners principle to reduce the stable problem and the femur splitting equivalent risk that is brought by shearing force in prosthese later stage.Formerly have good application and market prospect in the hip patient hip replacement surgery.
Below in conjunction with the drawings and specific embodiments this utility model is described in further details, present embodiment only is this utility model preferred forms, is not to restriction of the present utility model.
Description of drawings
Fig. 1 is this utility model notch cuttype oversleeve sketch map
Fig. 2 is structural representation after this utility model and the assembly of handle body
The specific embodiment
As shown in Figure 1, this utility model notch cuttype oversleeve, its adopts the design of taper of (1) part, can make after the operation to bore with pulp cavity to join, and prevents the sinking of handle body, and can form self-locking.
And adopt ladder (2) design vertebral body, after prosthese is implanted, prosthese can be converted to vertically downward compressive stress to the shearing force of pulp cavity, reduce bone splitting risk, and reduce stress shielding.
Adopt the band span (3) design on cone (1) top, can effectively strengthen the anti-function of revolving after oversleeve is implanted.
As shown in Figure 2, with after oversleeve cooperates, can effectively reach near-end at the handle body, far-end is fixing purpose simultaneously, make prosthese can more effectively finish before and after phase fixing, reduced the risk of prosthetic loosening.
Claims (4)
1. notch cuttype oversleeve, it is comprised of ladder.
2. a kind of notch cuttype oversleeve according to claim 1 is characterized in that, the interior external form part (1) of oversleeve all adopts tapered design.
3. a kind of notch cuttype oversleeve according to claim 1 is characterized in that, the height of each ladder (2) is consistent.
4. a kind of notch cuttype oversleeve according to claim 1 is characterized in that, oversleeve is with the span (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220014507 CN202724038U (en) | 2012-01-13 | 2012-01-13 | Stair-shaped sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220014507 CN202724038U (en) | 2012-01-13 | 2012-01-13 | Stair-shaped sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202724038U true CN202724038U (en) | 2013-02-13 |
Family
ID=47649798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220014507 Expired - Fee Related CN202724038U (en) | 2012-01-13 | 2012-01-13 | Stair-shaped sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202724038U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103598933A (en) * | 2013-10-30 | 2014-02-26 | 嘉思特华剑医疗器材(天津)有限公司 | Hip joint prosthesis |
| CN106691633A (en) * | 2016-12-29 | 2017-05-24 | 北京爱康宜诚医疗器材有限公司 | Femoral near-end sleeve component |
| CN107361881A (en) * | 2017-08-07 | 2017-11-21 | 胡永成 | A kind of distal femur prosthese using trabecular bone structure for increasing bone reserve capacity |
-
2012
- 2012-01-13 CN CN 201220014507 patent/CN202724038U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103598933A (en) * | 2013-10-30 | 2014-02-26 | 嘉思特华剑医疗器材(天津)有限公司 | Hip joint prosthesis |
| CN103598933B (en) * | 2013-10-30 | 2016-03-30 | 嘉思特华剑医疗器材(天津)有限公司 | A kind of hip prosthesis |
| CN106691633A (en) * | 2016-12-29 | 2017-05-24 | 北京爱康宜诚医疗器材有限公司 | Femoral near-end sleeve component |
| CN107361881A (en) * | 2017-08-07 | 2017-11-21 | 胡永成 | A kind of distal femur prosthese using trabecular bone structure for increasing bone reserve capacity |
| CN107361881B (en) * | 2017-08-07 | 2023-11-24 | 胡永成 | Femur far-end prosthesis capable of increasing bone preservation quantity and adopting bone trabecular structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20150113 |
|
| EXPY | Termination of patent right or utility model |