CN203244476U - Hip-joint femoral stem prosthesis for bone replacement and transplant - Google Patents
Hip-joint femoral stem prosthesis for bone replacement and transplant Download PDFInfo
- Publication number
- CN203244476U CN203244476U CN 201320289935 CN201320289935U CN203244476U CN 203244476 U CN203244476 U CN 203244476U CN 201320289935 CN201320289935 CN 201320289935 CN 201320289935 U CN201320289935 U CN 201320289935U CN 203244476 U CN203244476 U CN 203244476U
- Authority
- CN
- China
- Prior art keywords
- handle body
- lesser trochanter
- femoral
- described handle
- stem
- 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
Links
Images
Abstract
The utility model relates to a hip-joint femoral stem prosthesis for the bone replacement and transplant. The hip-joint femoral stem prosthesis is a femoral stem main body provided with gradient decreasing double conical surfaces, and sequentially comprises a stem body head part (1) provided with a free end, a stem body middle part (2) and a stem body tail part (3) provided with a free end, wherein the taper of a coronary surface of the femoral stem main body reduces gradually or section by section from the free end of the stem body head part (1) to the free end of the stem body tail part (3); a thread (101) is formed in one end of the stem body head part (1); porous tantalum work pieces are arranged at the stem body middle part (2) and the stem body tail part (3), and are integrally formed; a threaded hole (203) is formed in one connection end of the stem body middle part (2) and the stem body head part (1), and is used for mounting the thread (101) of the stem body head part (1) in a matching manner; a groove (301) with the depth of 2-5 millimeters is further formed in the stem body tail part (3). Therefore, the hip-joint femoral stem is suitable for the physiological structure characteristics of Chinese people, has stable structure and favorable biocompatibility.
Description
Technical field
This utility model relates to the artificial bone displacement to be transplanted, and relates in particular to a kind of bone displacement and transplants the femoral hip stem prosthesis of usefulness.
Background technology
Artificial hip joint stem is a kind of need to carry out the orthopaedics replacement operation for the human hip pathological changes time, and the alternative of implant into body medullary cavity.It can make patient recover to a certain extent the physiological function of hip joint, and alleviating pain improves motion and quality of life.
In the prior art, artificial hip joint is to be made of femoral stem and the first-class parts of femur, wherein femoral stem is as the link that connects human femur under loading and human body far-end, play fixing and supporting role in human body, its structural design and material property are directly connected to the therapeutic effect of hip replacement surgery.But the hip prosthesis overwhelming majority used in the prior art is external import prosthese.This type of prosthese is based on foreign human body, west ethnic group particularly, femoral bone cavitas medullaris dissect particular design, and be unsuitable for compatriots' physiological structure characteristics.
Through repeatedly clinical experiment checking, following weak point has appearred in the artificial marrow joint handle of this known structure: first biomechanics distributes uneven, and the local area produces stress concentration easily, and it is loosening to cause the bone dissolving to produce; Its two be in clinical practice, do not conform to compatriots' femoral bone cavitas medullaris anatomical structure characteristics or matching poor and cause femoral stem postoperative and pulp cavity can not reach good coupling, particularly the far-end coupling is poor in the prosthesis handle, causes postoperative that the handle sinking easily occurs; Thereby it three repulsion can occur with tissue after to be that artificial hip joint stem is long-time use and affect its service life.
The utility model content
The purpose of this utility model is to provide a kind of bone displacement to transplant the femoral hip stem prosthesis of usefulness, and this femoral hip stem prosthesis Stability Analysis of Structures has good biocompatibility concurrently, is suitable for compatriots' physiological structure characteristics.
The purpose of this utility model is achieved in that
The femoral hip stem prosthesis of usefulness is transplanted in a kind of bone displacement, it is characterized in that: it is to have the successively decrease femoral stem main body of Double-conical-surface of gradient, it comprises having free-ended handle body head successively, handle body middle part, with have free-ended handle body afterbody, and the tapering of the coronalplane of described femoral stem main body from the free end of described handle body head to described handle body afterbody free end gradual change ground or reduce piecemeal; One end of described handle body head is provided with screw thread; Described handle body middle part and described handle body afterbody all are set to the porous tantalum product, adopt one-body moldedly, and an end that is connected with handle body head in the middle part of the described handle body is provided with screwed hole, realizes the connection of the two with the screw thread of cooperation installing handle body head; It is 2～5 millimeters groove that described handle body afterbody also is provided with the degree of depth, to strengthen its antitorque and anti-rotational stability.
Above-mentioned handle body middle part and above-mentioned handle body afterbody all are set to the porous tantalum product, and its porosity is 60～70%.This porous tantalum product can adopt the preparations such as foam dipping method, die pressing.Find that through studying for a long period of time the porous tantalum product in the biocompatibility that has greatly improved femoral hip stem, has also well satisfied its mechanical property, greatly improved its service life and implanted comfort level.And the surface of above-mentioned handle body middle part and above-mentioned handle body afterbody also is provided with the hydroxyapatite surface coating, so that it has the function of inducing bone cell growth.
Further, the front and back side of the coronalplane at above-mentioned handle body middle part is respectively arranged with three parallel ridges of longitudinal extension along this handle body middle part, and middle ridge is longer than the ridge of both sides.This design can make type femoral bone end prosthesis implant behind the pulp cavity and between the spongy bone and mutually embed, and can increase on the one hand the stability after prosthese is implanted, and can increase on the other hand the anti-verticity of prosthese, finally increases prosthese stability at a specified future date.
Further, the coronalplane tapering of above-mentioned handle body head is 3 degree, and the coronalplane tapering at above-mentioned handle body middle part is 2 degree, and the coronalplane tapering of above-mentioned handle body afterbody is 1 degree.
Further, the radius of curvature of the inboard of above-mentioned femoral stem main body from part on the lesser trochanter, lesser trochanter plane, to the lesser trochanter part gradual change ground or increase piecemeal.
Further, the cross sectional dimensions of above-mentioned femoral stem main body from part on the lesser trochanter, lesser trochanter plane, to the lesser trochanter part gradual change ground or reduce piecemeal.
The utlity model has following beneficial effect:
This utility model is applicable to the hip replacement that deformity is serious and overhaul, trouble limb length and motor function have been recovered to greatest extent, effectively solve growing in conjunction with unsettled problem with bad the reaching with human bone of human femur under loading matching that the traditional metal hip joint stalk exists, and can reduce the incidence rate of thigh pain.It has improved the nearly section of existing artificial femur handle and has not mated or mated poor shortcoming with Chinese's Proximal femur pulp cavity, make it more meet compatriots' bone medullary cavity anatomical structure characteristics, avoid Proximal femur in implanting prosthetic or fissure fracture occurs afterwards and then affect artificial femur handle stability at a specified future date.In addition, it has the porous product structure that bone is grown into, realized organically combining as a whole with body bone tissue, reach real biological fixation, not only greatly improved the biocompatibility of this artificial joint, mechanics and the similar people's bone of biological property have well satisfied its mechanical property simultaneously, have greatly improved the service life of this artificial joint and have implanted comfort level.
Description of drawings
Fig. 1 is the Integral connection structure sketch map that the femoral hip stem prosthesis of usefulness is transplanted in the bone displacement among this utility model embodiment 1.
Fig. 2 is the structural representation after the femoral hip stem prosthesis of bone displacement transplanting usefulness among this utility model embodiment 1 splits.
The specific embodiment
Be this utility model preferred embodiment below, and be not be used to limiting protection domain of the present utility model.
Shown in Fig. 1～2: the femoral hip stem prosthesis of usefulness is transplanted in a kind of bone displacement, it is to have the successively decrease femoral stem main body of Double-conical-surface of gradient, it comprises having free-ended handle body head 1 successively, handle body middle part 2 and have free-ended handle body afterbody 3, and the free end of the tapering of the coronalplane of femoral stem main body from the free end of handle body head 1 to handle body afterbody 3 reduces piecemeal; Handle body head 1 adopts medical titanium alloy to process, and the one end is provided with screw thread 101; Handle body middle part 2 and handle body afterbody 3 all are set to the porous tantalum product, and its porosity is 60～70%, adopts one-body molded, and in the middle part of the handle body 2 and the surface of handle body afterbody 3 be provided with the hydroxyapatite surface coating; Handle body middle part 2 ends that are connected with handle body head 1 are provided with screwed hole 203, realize the connection of the two with the screw thread 101 that cooperates installing handle body head 1; It is 3 millimeters groove 301 that handle body afterbody 3 also is provided with the degree of depth, to strengthen its antitorque and anti-rotational stability; The coronalplane tapering of handle body head 1 is 3 degree, and the coronalplane tapering at handle body middle part 2 is 2 degree, and the coronalplane tapering of handle body afterbody 3 is 1 degree; The radius of curvature of the inboard of femoral stem main body from part on the lesser trochanter, lesser trochanter plane, to the lesser trochanter part gradual change ground or increase piecemeal; The cross sectional dimensions of femoral stem main body from part on the lesser trochanter, lesser trochanter plane, to the lesser trochanter part gradual change ground or reduce piecemeal; The front and back side of the coronalplane at handle body middle part 2 is along three parallel ridges 201 of these handle body middle part 2 longitudinal extensions that are respectively arranged with, and middle ridge is longer than the ridge of both sides.
The characteristics that the design of gradient is successively decreased in the present embodiment Double-conical-surface makes this type femoral bone end prosthesis can be after implanting pulp cavity dissect osteotomy with femoral bone cavitas medullaris meet, and then reach good coupling and obtain on this basis the prosthese incipient stability; It with type femoral bone end prosthesis coronalplane taper design near, in, three parts far away have different taperings, improved the coupling of type femoral bone end prosthesis and pulp cavity, reduce at far-end simultaneously cause after prosthese is implanted that stress distribution is unusual, stress concentration and the probability of large skelalgia at a specified future date in occuring.The simultaneously gradient Double-conical-surface design of successively decreasing more meets the conduction of femur stress, the situation such as stress shielding, stress concentration occurs and causes femur to be fractured to avoid at a specified future date.The Double-conical-surface design consideration compatriots femoral bone cavitas medullaris anatomical features that gradient in this utility model is successively decreased and none-cement handle are implanted and are required in the pulp cavity and reach matched well and obtain thus and be fixed with pressure, obtain the prosthesis handle incipient stability and fix, and then obtain stable fixing assurance at a specified future date.
Claims (9)
1. the femoral hip stem prosthesis of usefulness is transplanted in a bone displacement, it is characterized in that: it is to have the successively decrease femoral stem main body of Double-conical-surface of gradient, it comprises having free-ended handle body head (1) successively, handle body middle part (2) and have free-ended handle body afterbody (3); The tapering of the coronalplane of described femoral stem main body from the free end of described handle body head (1) to described handle body afterbody (3) free end gradual change ground or reduce piecemeal; One end of described handle body head (1) is provided with screw thread (101); Described handle body middle part (2) and described handle body afterbody (3) all are set to the porous tantalum product, adopt one-body molded, and the end that described handle body middle part (2) is connected with handle body head (1) is provided with screwed hole (203), to cooperate the screw thread (101) of installing handle body head (1); It is 2～5 millimeters groove (301) that described handle body afterbody (3) also is provided with the degree of depth.
2. the femoral hip stem prosthesis of usefulness is transplanted in bone displacement according to claim 1, and it is characterized in that: described handle body middle part (2) and described handle body afterbody (3) all are set to the porous tantalum product, and its porosity is 60～70%; The surface of described handle body middle part (2) and described handle body afterbody (3) also is provided with the hydroxyapatite surface coating.
3. the femoral hip stem prosthesis of usefulness is transplanted in bone displacement according to claim 1 and 2, it is characterized in that: the front and back side of the coronalplane at described handle body middle part (2) is respectively arranged with three parallel ridges (201) of longitudinal extension along this handle body middle part (2), and middle ridge is longer than the ridge of both sides.
4. the femoral hip stem prosthesis of usefulness is transplanted in bone displacement according to claim 1 and 2, it is characterized in that: the coronalplane tapering of described handle body head (1) is 3 degree, the coronalplane tapering at described handle body middle part (2) is 2 degree, and the coronalplane tapering of described handle body afterbody (3) is 1 degree.
5. the femoral hip stem prosthesis of usefulness is transplanted in bone displacement according to claim 3, it is characterized in that: the coronalplane tapering of described handle body head (1) is 3 degree, the coronalplane tapering at described handle body middle part (2) is 2 degree, and the coronalplane tapering of described handle body afterbody (3) is 1 degree.
6. the femoral hip stem prosthesis of usefulness is transplanted in bone according to claim 1 and 2 displacement, it is characterized in that: the radius of curvature of the inboard of described femoral stem main body from part on the lesser trochanter, lesser trochanter plane, to the lesser trochanter the part gradual change or increase piecemeal; The cross sectional dimensions of described femoral stem main body from part on the lesser trochanter, lesser trochanter plane, to the lesser trochanter part gradual change ground or reduce piecemeal.
7. the femoral hip stem prosthesis of usefulness is transplanted in bone according to claim 3 displacement, it is characterized in that: the radius of curvature of the inboard of described femoral stem main body from part on the lesser trochanter, lesser trochanter plane, to the lesser trochanter the part gradual change or increase piecemeal; The cross sectional dimensions of described femoral stem main body from part on the lesser trochanter, lesser trochanter plane, to the lesser trochanter part gradual change ground or reduce piecemeal.
8. the femoral hip stem prosthesis of usefulness is transplanted in bone according to claim 4 displacement, it is characterized in that: the radius of curvature of the inboard of described femoral stem main body from part on the lesser trochanter, lesser trochanter plane, to the lesser trochanter the part gradual change or increase piecemeal; The cross sectional dimensions of described femoral stem main body from part on the lesser trochanter, lesser trochanter plane, to the lesser trochanter part gradual change ground or reduce piecemeal.
9. the femoral hip stem prosthesis of usefulness is transplanted in bone according to claim 5 displacement, it is characterized in that: the radius of curvature of the inboard of described femoral stem main body from part on the lesser trochanter, lesser trochanter plane, to the lesser trochanter the part gradual change or increase piecemeal; The cross sectional dimensions of described femoral stem main body from part on the lesser trochanter, lesser trochanter plane, to the lesser trochanter part gradual change ground or reduce piecemeal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320289935 CN203244476U (en) | 2013-05-24 | 2013-05-24 | Hip-joint femoral stem prosthesis for bone replacement and transplant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320289935 CN203244476U (en) | 2013-05-24 | 2013-05-24 | Hip-joint femoral stem prosthesis for bone replacement and transplant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203244476U true CN203244476U (en) | 2013-10-23 |
Family
ID=49370947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320289935 Expired - Fee Related CN203244476U (en) | 2013-05-24 | 2013-05-24 | Hip-joint femoral stem prosthesis for bone replacement and transplant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203244476U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103462730A (en) * | 2013-09-26 | 2013-12-25 | 赵德伟 | Porous tantalum rod and application of porous tantalum rod |
| CN106913396A (en) * | 2015-12-25 | 2017-07-04 | 重庆润泽医药有限公司 | One kind implantation hip joint |
-
2013
- 2013-05-24 CN CN 201320289935 patent/CN203244476U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103462730A (en) * | 2013-09-26 | 2013-12-25 | 赵德伟 | Porous tantalum rod and application of porous tantalum rod |
| CN106913396A (en) * | 2015-12-25 | 2017-07-04 | 重庆润泽医药有限公司 | One kind implantation hip joint |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105326583B (en) | A kind of ilium defect reconstruction prosthese | |
| CN203388966U (en) | Femoral component prosthesis for hip joint of human body | |
| CN103622765A (en) | Artificial hip joint structure | |
| CN103505307A (en) | Biotype artificial hip joint femoral component | |
| CN203244476U (en) | Hip-joint femoral stem prosthesis for bone replacement and transplant | |
| CN202086619U (en) | Proximal humerus shoulder joint prosthesis | |
| CN209316157U (en) | A kind of ankle prosthesis shin bone sidepiece part | |
| CN203291079U (en) | Hip joint femoral stem replacement | |
| CN204468346U (en) | A kind of hip revision femur inwall grommet | |
| CN203244474U (en) | Hip joint simple combined handle | |
| CN203244471U (en) | Simple combined handle of artificial implanting hip joint | |
| CN203315123U (en) | Simple artificial hip joint femoral component prosthesis | |
| CN203303198U (en) | Biomimetic hip-joint | |
| CN203303197U (en) | Hip-joint replacement | |
| CN109330748A (en) | A kind of ankle prosthesis shin bone sidepiece part | |
| CN203303193U (en) | Hip joint femoral shaft prosthesis | |
| CN203252768U (en) | Artificial hip joint stem | |
| CN101416907A (en) | Artificial femur handle and artificial full hip-joint replacement prosthesis | |
| CN203252769U (en) | Hip joint femoral stem for artificial replacement transplantation | |
| CN203244473U (en) | Hip joint combined stem for bone replacement transplantation | |
| CN209316156U (en) | A kind of personalization astragalus surface replacement prosthesis | |
| CN203291074U (en) | Artificially-implanted hip joint femoral stem | |
| CN112773569A (en) | Intramedullary pressurization fixing device for reconstruction of adjacent joint bone defect prosthesis | |
| CN203252770U (en) | Low-elasticity-modulus medical bone replacement hip joint grip | |
| CN208910593U (en) | A kind of bone grafting fusion steady type artificial hip joint femoral shaft |
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: 20131023 Termination date: 20190524 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |