CN2642265Y - Artificial hip joint two-active femoral head - Google Patents
Artificial hip joint two-active femoral head Download PDFInfo
- Publication number
- CN2642265Y CN2642265Y CN 200320116984 CN200320116984U CN2642265Y CN 2642265 Y CN2642265 Y CN 2642265Y CN 200320116984 CN200320116984 CN 200320116984 CN 200320116984 U CN200320116984 U CN 200320116984U CN 2642265 Y CN2642265 Y CN 2642265Y
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- CN
- China
- Prior art keywords
- femoral head
- moving
- opening
- hip joint
- head
- 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 is an improved artificial coxa joint double-action femoral head; the device is characterized in that the inner neck part of the plastic inner liner of the existing artificial coxa joint double-action femoral head is provided with a flute; the flute is provided with an inner clamping ring for the opening; according to the principles of the mechanics, the device can achieve the purposes: the small ball head is easy to install and not easy to fall off; the service life of the product is improved; thus the utility model eliminates the physiological burden of the patient. The utility model is applicable for the replacement surgery of the coxa joint of a human body with the pathological changes in the coxa joint.
Description
Affiliated technical field
This utility model relates to the artificial joint of medical domain.The two moving femorals head of particularly a kind of improved artificial hip joint.
Background technology
The two moving femorals head of artificial hip joint are body implants.The alternative of implant into body hip joint when being used for the human hip pathological changes and need carrying out the orthopaedics replacement operation makes patient recover the physiological function of hip joint to a certain extent after the implantation, alleviating pain improves motion and improves the quality of living.In prior art, snap ring structure in two moving femoral head plastic inner lining internal collar imperforations, installation and taking-up are very inconvenient, after using certain hour, eck weares and teares gradually, the time have little bulb to come off possibility, increase the mortality of replacement, increased the weight of patient's physiological load.
Summary of the invention
The purpose of this utility model is to provide a kind of improved artificial hip joint two moving femorals head, can overcome existing little bulb of artificial hip joint and double motion head plastic inner lining because of using wearing and tearing, easily comes off, and defectives such as inconvenience are installed; Prolonged the service life of product, convenient simultaneously the installation and taking-up increased the success rate of replacement, alleviated patient's physiological load.
Task of the present utility model realizes by this way: the two moving femorals head of this artificial hip joint are in two moving femoral head plastic inner lining internal collar machined grooves, prepare snap ring in the opening again, adopt mechanics principle: during installation, the bead head inwardly advances along two moving femoral head plastic inner lining opening parts, snap ring also moves to the big extreme direction of two moving femoral head plastic inner lining grooves thereupon in the opening, the snap ring internal diameter increases in the opening, reaches the purpose of installing easily.When extracting, little bulb inwardly serves as a contrast opening part and withdraws from, snap ring also moves on to the small end place of the groove of two moving femoral head plastic inner linings thereupon in the opening, make the interior snap ring internal diameter of opening less than bead head diameter, the constrains ball head is deviate from from two moving femoral head plastic inner lining opening parts, thereby reaches the purpose of bead head difficult drop-off.
When implementing this utility model, described groove is wide to be 1～18 millimeter, and the monolateral degree of depth of groove is 0.1～16 millimeter; The groove width of groove is too little, influences the activity of snap ring in the opening, influences the loading and unloading of little bulb, the intensity of the two moving femoral head plastic inner linings of too big then influence; The monolateral degree of depth of groove is too little, and snap ring is easily deviate from the opening, and little bulb is difficult for taking out simultaneously, the intensity of the two moving femoral head plastic inner linings of too big then influence.The snap ring width is 0.1～16 millimeter in the opening, highly is 0.2～20 millimeter, adapts with groove, forms good coupling; The snap ring width is too little in the opening, influences intensity, easily deviates from simultaneously; Too greatly then influence activity, influence the loading and unloading of bead head.
Description of drawings
Fig. 1 is the sketch map of a kind of concrete structure of this utility model
Fig. 2 is that the A of snap ring in the opening is to view
The specific embodiment
As depicted in figs. 1 and 2, this utility model of forming by snap ring 3 disjunctors in the outer cup 1 of two moving femoral head metals, two moving femoral head plastic inner lining 2 and the opening, identical with the two moving femoral head apparent sizes of existing artificial hip joint with mounting means, its difference is at two moving femoral head plastic inner lining 2 internal collar Design and Machining grooves 4, the groove width of groove is 8 millimeters, the monolateral degree of depth of groove is 3.33 millimeters, snap ring 3 in the preparation opening in groove 4.The width of snap ring 3 is 4 millimeters, highly is 4.7 millimeters in the opening, adapts with groove; The outer cup 1 of the two moving capital metals of this artificial hip joint is to adopt the smart casting of metal vacuum of human implantable to make, and also can adopt to forge and make.Snap ring 3 is to adopt medical superhigh molecular weight polyethylene material mold pressing to make in two moving femoral head plastic inner linings 2 and the opening, also can adopt machining process to make.Groove 4 is to adopt the method for machining to make.
Claims (2)
1, the two moving femorals head of a kind of artificial hip joint include the two moving femorals head of being made up of snap ring (3) disjunctor in the outer cups of two moving femoral head metals (1), two moving femoral head plastic inner linings (2) and the opening of artificial hip joint.It is characterized in that in two moving femoral head plastic inner linings (2) opening part internal collar machined grooves (4) snap ring (3) in the preparation opening in groove (4).
2, according to the two moving femorals head of claim 1 described artificial hip joint, the described groove of its feature (4) wide is 1～18 millimeter, and the monolateral degree of depth of groove is 0.1～16 millimeter; Snap ring (3) width is 0.1～16 millimeter in the opening, highly is 0.2～20 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320116984 CN2642265Y (en) | 2003-10-14 | 2003-10-14 | Artificial hip joint two-active femoral head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320116984 CN2642265Y (en) | 2003-10-14 | 2003-10-14 | Artificial hip joint two-active femoral head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2642265Y true CN2642265Y (en) | 2004-09-22 |
Family
ID=34305327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320116984 Expired - Fee Related CN2642265Y (en) | 2003-10-14 | 2003-10-14 | Artificial hip joint two-active femoral head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2642265Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106388979A (en) * | 2016-10-31 | 2017-02-15 | 优适医疗科技（苏州）有限公司 | Novel double-action hip joint prosthesis |
| CN107252367A (en) * | 2017-02-28 | 2017-10-17 | 吴栋 | A kind of integral type double motion head and preparation method thereof |
| CN107252368A (en) * | 2017-03-01 | 2017-10-17 | 吴栋 | A kind of integral type double motion head and preparation method thereof |
| CN107252369A (en) * | 2017-02-27 | 2017-10-17 | 吴栋 | A kind of integral type acetabular component and preparation method thereof |
| CN107261212A (en) * | 2017-02-28 | 2017-10-20 | 吴栋 | A kind of integral type acetabular component and preparation method thereof |
| CN109124833A (en) * | 2018-11-08 | 2019-01-04 | 北京爱康宜诚医疗器材有限公司 | Artificial dentata |
-
2003
- 2003-10-14 CN CN 200320116984 patent/CN2642265Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106388979A (en) * | 2016-10-31 | 2017-02-15 | 优适医疗科技（苏州）有限公司 | Novel double-action hip joint prosthesis |
| CN107252369A (en) * | 2017-02-27 | 2017-10-17 | 吴栋 | A kind of integral type acetabular component and preparation method thereof |
| CN107252367A (en) * | 2017-02-28 | 2017-10-17 | 吴栋 | A kind of integral type double motion head and preparation method thereof |
| CN107261212A (en) * | 2017-02-28 | 2017-10-20 | 吴栋 | A kind of integral type acetabular component and preparation method thereof |
| CN107252368A (en) * | 2017-03-01 | 2017-10-17 | 吴栋 | A kind of integral type double motion head and preparation method thereof |
| CN109124833A (en) * | 2018-11-08 | 2019-01-04 | 北京爱康宜诚医疗器材有限公司 | Artificial dentata |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Wu Dong Document name: Notification to Pay the Fees |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040922 Termination date: 20111014 |