CN203303193U - Hip joint femoral shaft prosthesis - Google Patents
Hip joint femoral shaft prosthesis Download PDFInfo
- Publication number
- CN203303193U CN203303193U CN2013202896626U CN201320289662U CN203303193U CN 203303193 U CN203303193 U CN 203303193U CN 2013202896626 U CN2013202896626 U CN 2013202896626U CN 201320289662 U CN201320289662 U CN 201320289662U CN 203303193 U CN203303193 U CN 203303193U
- Authority
- CN
- China
- Prior art keywords
- lesser trochanter
- femoral
- handle body
- ridge
- shaft body
- 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
- 210000004394 hip joint Anatomy 0.000 title abstract description 9
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical group [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 5
- 210000000528 lesser trochanter Anatomy 0.000 claims description 24
- 229910052715 tantalum Inorganic materials 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 3
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims description 3
- 210000000988 bone and bone Anatomy 0.000 description 15
- 210000001624 hip Anatomy 0.000 description 9
- 210000000689 upper leg Anatomy 0.000 description 7
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 210000003484 anatomy Anatomy 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000002224 dissection Methods 0.000 description 2
- 238000011540 hip replacement Methods 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 101000911772 Homo sapiens Hsc70-interacting protein Proteins 0.000 description 1
- 229910000771 Vitallium Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002449 bone cell Anatomy 0.000 description 1
- 230000010261 cell growth Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 239000000602 vitallium Substances 0.000 description 1
Images
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- Prostheses (AREA)
Abstract
The utility model relates to a hip joint femoral shaft prosthesis. The hip joint femoral shaft prosthesis is a femoral shaft body of a gradient degression double-cone structure and comprises a head (1) and a shaft body (2), wherein the head (1) and the shaft body (2) are both provided with free ends; the taper of the coronal plane of the femoral shaft body is changed gradually or reduced gradually from the free end of the head (1) to the free end of the shaft body (2); the head (1) and the shaft body (2) are integrally formed by titanium alloy; the front side and the rear side of the coronal plane of the shaft body (2) are respectively provided with three parallel ridges (201) which extend in the inclined direction, each middle ridge is longer than the ridges on two sides, each ridge (201) is a multi-hole tantalum part, and the height of each ridge (201) ranges from 5mm to 10mm; the surface, close to the free end, of the shaft body (2) is further provided with an annular groove ranging from 5mm to10mm, and the annular multi-hole tantalum parts (202) adhere inside the annular groove, so that the annular groove is flush with the surface of the shaft body (2) after the annular multi-hole tantalum parts (202) adhere inside the annular groove. The hip joint femoral shaft prosthesis has the advantages of being good in biocompatibility and suitable for the physiological structures of countrymen.
Description
Technical field
This utility model relates to the joint prosthesis that use is transplanted in the bone displacement, relates in particular to a kind of femoral hip stem prosthesis.
Background technology
In prior art, hip replacement surgery in bone displacement fields of implantation, it is to pass through the Artificial Intervention hip joint, rebuild the anatomical structure of human hip, and make it obtain normal mechanical property recovery or complete certain physiological function, reach thus alleviating pain, improve the purpose of function and quality of life.Its artificial hip joint is to consist 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, in human body, play fixing and supporting role, its structural design and material property are directly connected to the therapeutic effect of hip replacement surgery.
Traditional artificial metal hip joint stalk generally adopts the material manufacture such as titanium alloy, vitallium, and its structure generally is divided into monoblock type and combination type.Yet existing metal hip joint handle, most is the femoral bone cavitas medullaris dissection particular design that external import prosthese all is based on foreign human body, and is unsuitable for compatriots' physiological structure characteristics.These products in clinical practice, do not conform to compatriots' femoral bone cavitas medullaris anatomical structure characteristics or matching poor and cause that femoral stem is postoperative can not reach good coupling with pulp cavity, particularly in prosthesis handle, far-end coupling is poor, causes postoperative easy generation handle sinking.And in prior art, select and the structure of hip joint combined handle arranges the certain defect of upper existence, cause it after long-time the use, to there will be repulsion with tissue, biocompatibility is poor and affect its service life.
The utility model content
The purpose of this utility model is to provide a kind of femoral hip stem prosthesis, and this femoral hip stem prosthesis has good biocompatibility, is suitable for compatriots' physiological structure characteristics.
The purpose of this utility model is achieved in that
A kind of femoral hip stem prosthesis is characterized in that: it is to have the successively decrease femoral stem main body of Double-conical-surface of gradient, and it comprises having free-ended head and have free-ended handle body; The tapering of the coronalplane of described femoral stem main body from the free end of described head to described handle body free end gradual change ground or reduce piecemeal; Described head and described handle body adopt titanium alloy one-body molded; The front and back side of the coronalplane of described handle body is respectively arranged with three parallel ridges of oblique extension along this handle body, the ridge in the middle of it is longer than the ridge of both sides, and this ridge is set to the porous tantalum product, high 5～10 millimeters; On described handle body, near on free-ended handle surface, also being provided with the annular recess of 5～10 millimeters, in this annular recess, be attached with ring-type porous tantalum product, so that this annular recess place flushes with the handle surface after adhering to.
Above-mentioned ridge is set to the porous tantalum product, and ring-type porous tantalum product, and its porosity is 60～70%.These porous tantalum products, 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 met its mechanical property, greatly improved its service life and implanted comfort level.And after the ridge arranged and ring-type porous tantalum product can make type femoral bone end prosthesis implant pulp cavity and between spongy bone, mutually embed, can increase on the one hand the stability after prosthese is implanted, can increase on the other hand the anti-verticity of prosthese, finally increase prosthese stability at a specified future date.
The surface of above-mentioned handle body also is provided with the hydroxyapatite surface coating, so that it has the function of inducing bone cell growth.
Further, the radius of curvature of the inboard of above-mentioned femoral stem main body is from part on lesser trochanter, lesser trochanter plane, to part gradual change ground under lesser trochanter or increase piecemeal.
Further, the cross sectional dimensions of above-mentioned femoral stem main body is from part on lesser trochanter, lesser trochanter plane, to part gradual change ground under lesser trochanter or reduce piecemeal.
The utlity model has following beneficial effect:
This utility model has improved existing femoral hip stem prosthesis and Chinese's Proximal femur pulp cavity does not mate or mate poor shortcoming, make it more meet compatriots' femoral bone cavitas medullaris anatomical structure characteristics, avoid Proximal femur in implanting prosthetic or fissure fracture occur afterwards and then affect artificial femur handle stability at a specified future date.The ridge of its setting and ring-type porous tantalum product have the porous product structure that bone is grown into, realized organically combining as a whole with body bone tissue, reach real biological fixation, after can making type femoral bone end prosthesis implant pulp cavity and between spongy bone, mutually embed, can increase on the one hand the stability after prosthese is implanted, can increase on the other hand the anti-verticity of prosthese, finally increase prosthese stability at a specified future date.
The accompanying drawing explanation
Fig. 1 is the Integral connection structure schematic diagram of the femoral hip stem prosthesis in this utility model embodiment 1.
The specific embodiment
Be below this utility model preferred embodiment, and be not intended to limit protection domain of the present utility model.
As shown in Figure 1: a kind of femoral hip stem prosthesis, it is to have the successively decrease femoral stem main body of Double-conical-surface of gradient, it comprises having free-ended head 1 and have free-ended handle body 2; The tapering of the coronalplane of femoral stem main body from the free end of 1 head to handle body 2 free end gradual change ground or reduce piecemeal; Head 1 and handle body 2 adopt titanium alloy one-body molded; The front and back side of the coronalplane of handle body 2 is respectively arranged with three parallel ridges 201 of oblique extension along this handle body 2, the ridge in the middle of it is longer than the ridge of both sides, and this ridge 201 is set to the porous tantalum product, high 6 millimeters; On handle body 2, also be provided with the annular recess of 10 millimeters near on free-ended handle body 2 surfaces, in this annular recess, be attached with ring-type porous tantalum product 202 so that this annular recess place after adhering to handle body 2 flush; Ridge 201 is set to the porous tantalum product, and ring-type porous tantalum product 202, and its porosity is 60～70%; The surface of handle body 2 also is provided with the hydroxyapatite surface coating; The radius of curvature of the inboard of femoral stem main body is from part on lesser trochanter, lesser trochanter plane, to part gradual change ground under lesser trochanter or increase piecemeal; The cross sectional dimensions of femoral stem main body is from part on lesser trochanter, lesser trochanter plane, to part gradual change ground under lesser trochanter or reduce piecemeal.
The Double-conical-surface design that in the present embodiment, gradient is successively decreased can meet this type femoral bone end prosthesis with the characteristics of femoral bone cavitas medullaris dissection osteotomy after implanting pulp cavity, and then reach good coupling and obtain on this basis the prosthese incipient stability; It has improved the coupling of type femoral bone end prosthesis and pulp cavity, at far-end, reduce after prosthese is implanted simultaneously cause that stress distribution is abnormal, stress concentration and the probability of large skelalgia at a specified future date in occurring.The simultaneously gradient Double-conical-surface design of successively decreasing, more meet 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 in pulp cavity and are required 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 (5)
1. femoral hip stem prosthesis is characterized in that: it is to have the successively decrease femoral stem main body of Double-conical-surface of gradient, and it comprises having free-ended head (1) and have free-ended handle body (2); The tapering of the coronalplane of described femoral stem main body from the free end of described head (1) to described handle body (2) free end gradual change ground or reduce piecemeal; Described head (1) and described handle body (2) adopt titanium alloy one-body molded; The front and back side of the coronalplane of described handle body (2) is respectively arranged with three parallel ridges (201) of oblique extension along this handle body (2), the ridge in the middle of it is longer than the ridge of both sides, and this ridge (201) is set to the porous tantalum product, high 5～10 millimeters; Described handle body (2) is upper is attached with ring-type porous tantalum product (202) near on free-ended handle body (2) surface, also being provided with the annular recess of 5～10 millimeters in this annular recess so that this annular recess place after adhering to handle body (2) flush.
2. femoral hip stem prosthesis according to claim 1, it is characterized in that: described ridge (201) is set to the porous tantalum product, and ring-type porous tantalum product (202), and its porosity is 60～70%.
3. femoral hip stem prosthesis according to claim 1 and 2, it is characterized in that: the surface of described handle body (2) also is provided with the hydroxyapatite surface coating.
4. femoral hip stem prosthesis according to claim 1 and 2 is characterized in that: the radius of curvature of the inboard of described femoral stem main body is from part on lesser trochanter, lesser trochanter plane, to part gradual change ground under lesser trochanter or increase piecemeal; The cross sectional dimensions of described femoral stem main body is from part on lesser trochanter, lesser trochanter plane, to part gradual change ground under lesser trochanter or reduce piecemeal.
5. femoral hip stem prosthesis according to claim 3 is characterized in that: the radius of curvature of the inboard of described femoral stem main body is from part on lesser trochanter, lesser trochanter plane, to part gradual change ground under lesser trochanter or increase piecemeal; The cross sectional dimensions of described femoral stem main body is from part on lesser trochanter, lesser trochanter plane, to part gradual change ground under lesser trochanter or reduce piecemeal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202896626U CN203303193U (en) | 2013-05-24 | 2013-05-24 | Hip joint femoral shaft prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202896626U CN203303193U (en) | 2013-05-24 | 2013-05-24 | Hip joint femoral shaft prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203303193U true CN203303193U (en) | 2013-11-27 |
Family
ID=49609435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202896626U Expired - Fee Related CN203303193U (en) | 2013-05-24 | 2013-05-24 | Hip joint femoral shaft prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203303193U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104784760A (en) * | 2015-03-25 | 2015-07-22 | 华南协同创新研究院 | A low elastic modulus integrated titanium-based femoral stem and its preparation method |
| CN116421365A (en) * | 2023-04-11 | 2023-07-14 | 苏州爱杰硕医疗科技有限公司 | Femoral stem prosthesis and manufacturing method |
-
2013
- 2013-05-24 CN CN2013202896626U patent/CN203303193U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104784760A (en) * | 2015-03-25 | 2015-07-22 | 华南协同创新研究院 | A low elastic modulus integrated titanium-based femoral stem and its preparation method |
| CN116421365A (en) * | 2023-04-11 | 2023-07-14 | 苏州爱杰硕医疗科技有限公司 | Femoral stem prosthesis and manufacturing method |
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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: 20131127 Termination date: 20190524 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |