CN104434343A - Femoral stem prosthesis - Google Patents
Femoral stem prosthesis Download PDFInfo
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- CN104434343A CN104434343A CN201410837991.9A CN201410837991A CN104434343A CN 104434343 A CN104434343 A CN 104434343A CN 201410837991 A CN201410837991 A CN 201410837991A CN 104434343 A CN104434343 A CN 104434343A
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- femoral stem
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Abstract
The invention discloses a femoral stem prosthesis. The femoral stem prosthesis comprises a neck of femur (1), a femoral stem near end (2) and a femoral stem far end (3) which are integrally formed, wherein the cross section of the neck of femur (1) is oval, the cross section of the femoral stem far end (3) is rectangular, the cross section of the inner side of the femoral near far end (2) is arched, and the cross section of the outer side of the femoral stem near end (2) is in the shape of a square with chamfers formed on two sides. By the adoption of the femoral stem prosthesis, the movement range of the hip joint is wide, prosthesis implantation is stable, surgery can be conducted conveniently, abrasion is reduced, and the service life of the prosthesis is prolonged due to sound bone ingrowth and blood supply of the femoral marrow cavity.
Description
Technical field
The present invention relates to a kind of human body implanting prosthetic, particularly relate to a kind of type femoral bone end prosthesis.
Background technology
Type femoral bone end prosthesis is used to the surgical implant replacing human hip femoral component, and it and bulb, full acetabular bone combinationally use, and perform the operation for hip joint half hip replacement.Existing type femoral bone end prosthesis structure is mainly made up of column type neck of femur, proximal end face micropore and far-end polishing cylinder, has the advantages such as easy to process, the construction cycle is short.
Above-mentioned femoral stem, though alternative femoral hip prosthesis part, has progressive really, but but find when reality uses also to have some shortcomings in its structure, cause this femoral stem in practical application, fail to reach best result of use, and its shortcoming can be summarized as follows:
1) range of activity is restricted.Existing hip prosthesis, after implant into body, movable between the angle that hip prosthesis is formed at column type neck of femur and acetabular bone edge, femur range of activity is limited, add the risk of acetabular bone dislocation, the collision of neck of femur and polyethylene acetabulum very easily produces a large amount of polyethylene chips, causes bone dissolving, prosthetic loosening, finally has to carry out revision procedure.
2) femoral bone cavitas medullaris blood supply is affected.Far-end cylinder coordinates with the height of pulp cavity, can affect pulp cavity blood supply.
3) fixed effect is not good enough.Because far-end is cylindrical, surface is glossing, and the anti-rotation performance of prosthese is too weak, and near end of thighbone surface is blasting craft, and surface is coarse not, and bone is unfavorable for Bone Ingrowth, and the long-term loosening rate of prosthese can rise.
4) clinical operation installs difficulty.The design of the straight shape of proximal lateral easily causes greater trochanter to fracture when Using prosthesis, higher to the operation level requirement of clinical doctor.
As can be seen here, above-mentioned existing hip prosthesis with in use in structure, obviously still has inconvenience and defect, and is urgently further improved.
Summary of the invention
The object of the present invention is to provide a kind of range of activity that can increase hip joint, and implant stable, type femoral bone end prosthesis easily.
For achieving the above object, the concrete technical scheme of type femoral bone end prosthesis of the present invention is as follows:
A kind of type femoral bone end prosthesis, comprise integrated neck of femur, femoral stem near-end and femoral stem far-end, the cross section of neck of femur is oval, the cross section of femoral stem far-end is rectangle, cross section inside femoral stem near-end is round and smooth arc, and the cross section of femoral stem proximal lateral is that both sides are formed with the square of chamfering.
Type femoral bone end prosthesis of the present invention has the following advantages:
1) neck of femur in the present invention adopts elliptic design, increases the range of activity of prosthese, decreases the wearing and tearing of femoral stem neck and full acetabular bone liner.
2) round and smooth design inside the femoral stem near-end in the present invention, the generation of fracture when can effectively avoid squeezing into, proximal end face adopts plasma spray titanium valve technique, thus makes prosthetic surface coarse, more be conducive to Bone Ingrowth, enhance initial stability and the anti-rotation performance of prosthese.
3) distal cross section of the femoral stem in the present invention is rectangle, and namely this shape has very strong anti-rotation performance, pulp cavity blood can be protected again to transport, can not affect pulp cavity blood supply.
4) the femoral stem proximal lateral in the present invention adopts adduction angle design, effectively greater trochanter can be avoided in the process of Using prosthesis human body, prevent from, because doctor's misoperation causes greater trochanter to fracture, conveniently implanting pulp cavity, less demanding to the operant level of clinical doctor.
5) the having three pyramidal faces design that the femoral stem end in the present invention smoothly transits, effectively can reduce the tension force of key end, reduce thigh pain after implanting.
Accompanying drawing explanation
Fig. 1 is the front view of type femoral bone end prosthesis of the present invention;
Fig. 2 is that A-A in Fig. 1 is to sectional view;
Fig. 3 is that B-B in Fig. 1 is to sectional view;
Fig. 4 is that C-C in Fig. 1 is to sectional view.
Detailed description of the invention
In order to better understand object of the present invention, structure and function, below in conjunction with accompanying drawing, further detailed description is done to a kind of type femoral bone end prosthesis of the present invention.
As shown in Figures 1 to 4, type femoral bone end prosthesis of the present invention can be made up of Ti-6Al-4V, comprises integrated neck of femur 1, femoral stem near-end 2 and femoral stem far-end 3.Wherein, the cross section of neck of femur 1 is oval.Thus, neck of femur adopts elliptic design, increases the range of activity of prosthese, decreases the wearing and tearing of femoral stem neck and full acetabular bone liner.
Further, the cross section inside femoral stem near-end 2 is round and smooth arc, and the cross section outside femoral stem near-end 2 is that both sides are formed with the square of chamfering, and the surface spraying of femoral stem near-end 2 has titanium valve layer.Thus, round and smooth design inside femoral stem near-end, the generation of fracture when can effectively avoid squeezing into, proximal end face adopts plasma spray titanium valve technique, thus makes prosthetic surface coarse, is more conducive to Bone Ingrowth, enhances initial stability and the anti-rotation performance of prosthese; Femoral stem proximal lateral adopts adduction angle design, effectively can avoid greater trochanter, prevent from, because doctor's misoperation causes greater trochanter to fracture, conveniently implanting pulp cavity in the process of Using prosthesis human body, less demanding to the operant level of clinical doctor.
Further, the cross section of femoral stem far-end 3 is rectangle, and the cross section outside femoral stem far-end 3 is the rectangle that both sides are formed with chamfering.Thus, the distal cross section of femoral stem is rectangle, and the existing very strong anti-rotation performance of this shape can be protected again pulp cavity blood to transport, can not affect pulp cavity blood supply.
Further, the end of femoral stem far-end 3 also can be formed with the femoral stem end 4 of pyramid.Thus, the having three pyramidal faces design that femoral stem end smoothly transits, effectively can reduce the tension force of key end, reduce thigh pain after implanting.
Further describe invention has been by specific embodiment above; but it should be understood that; here concrete description; should not be construed as the restriction to the spirit and scope of the invention; one of ordinary skilled in the art to the various amendments that above-described embodiment is made, belongs to the scope that the present invention protects after reading this specification.
Claims (5)
1. a type femoral bone end prosthesis, comprise integrated neck of femur (1), femoral stem near-end (2) and femoral stem far-end (3), it is characterized in that, the cross section of neck of femur (1) is oval, the cross section of femoral stem far-end (3) is rectangle, the cross section of femoral stem near-end (2) inner side is round and smooth arc, and the cross section in femoral stem near-end (2) outside is that both sides are formed with the square of chamfering.
2. type femoral bone end prosthesis according to claim 1, is characterized in that, the surface spraying of femoral stem near-end (2) has titanium valve layer.
3. type femoral bone end prosthesis according to claim 1, is characterized in that, the cross section in femoral stem far-end (3) outside is the rectangle that both sides are formed with chamfering.
4. type femoral bone end prosthesis according to claim 1, is characterized in that, the end of femoral stem far-end (3) is formed with the femoral stem end (4) of pyramid.
5. type femoral bone end prosthesis according to claim 1, is characterized in that, type femoral bone end prosthesis is made up of Ti-6Al-4V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410837991.9A CN104434343A (en) | 2014-12-29 | 2014-12-29 | Femoral stem prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410837991.9A CN104434343A (en) | 2014-12-29 | 2014-12-29 | Femoral stem prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104434343A true CN104434343A (en) | 2015-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410837991.9A Pending CN104434343A (en) | 2014-12-29 | 2014-12-29 | Femoral stem prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104434343A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108814774A (en) * | 2018-06-27 | 2018-11-16 | 绍兴市上虞中医医院 | Femoral prosthesis 3D installs orienting locator |
| CN108992214A (en) * | 2017-06-06 | 2018-12-14 | 上海博玛医疗科技有限公司 | A kind of femoral stem |
| CN111759548A (en) * | 2020-07-22 | 2020-10-13 | 张国强 | Artificial hip joint femoral stem prosthesis |
| CN111938876A (en) * | 2020-08-07 | 2020-11-17 | 武汉联影智融医疗科技有限公司 | Combined femoral stem |
| CN116138932A (en) * | 2023-04-21 | 2023-05-23 | 北京纳通医疗科技控股有限公司 | Femoral stem and hip joint prosthesis with same |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1993091A (en) * | 2004-08-06 | 2007-07-04 | 沃尔德马连接两合公司 | Hip-joint prosthesis comprising a shaft that can be inserted into the femur |
| CN201510379U (en) * | 2009-10-21 | 2010-06-23 | 北京市春立正达科技开发有限公司 | Hip prosthesis |
| CN202605055U (en) * | 2012-03-27 | 2012-12-19 | 浙江省中医院 | Femoral intertrochanteric fracture hip joint prosthesis for the aged |
| CN103705316A (en) * | 2012-09-28 | 2014-04-09 | 德普伊新特斯产品有限责任公司 | Orthopaedic hip prosthesis having femoral stem components with varying a/p taper angles |
| CN203790084U (en) * | 2011-01-27 | 2014-08-27 | 捷迈有限责任公司 | Straight shank for being implanted into near-end femur |
| US20140343685A1 (en) * | 2013-05-20 | 2014-11-20 | Chitranjan S. Ranawat | Femoral component for a hip prosthesis |
| CN204521058U (en) * | 2014-12-29 | 2015-08-05 | 北京市春立正达医疗器械股份有限公司 | Type femoral bone end prosthesis |
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2014
- 2014-12-29 CN CN201410837991.9A patent/CN104434343A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1993091A (en) * | 2004-08-06 | 2007-07-04 | 沃尔德马连接两合公司 | Hip-joint prosthesis comprising a shaft that can be inserted into the femur |
| CN201510379U (en) * | 2009-10-21 | 2010-06-23 | 北京市春立正达科技开发有限公司 | Hip prosthesis |
| CN203790084U (en) * | 2011-01-27 | 2014-08-27 | 捷迈有限责任公司 | Straight shank for being implanted into near-end femur |
| CN202605055U (en) * | 2012-03-27 | 2012-12-19 | 浙江省中医院 | Femoral intertrochanteric fracture hip joint prosthesis for the aged |
| CN103705316A (en) * | 2012-09-28 | 2014-04-09 | 德普伊新特斯产品有限责任公司 | Orthopaedic hip prosthesis having femoral stem components with varying a/p taper angles |
| US20140343685A1 (en) * | 2013-05-20 | 2014-11-20 | Chitranjan S. Ranawat | Femoral component for a hip prosthesis |
| CN204521058U (en) * | 2014-12-29 | 2015-08-05 | 北京市春立正达医疗器械股份有限公司 | Type femoral bone end prosthesis |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108992214A (en) * | 2017-06-06 | 2018-12-14 | 上海博玛医疗科技有限公司 | A kind of femoral stem |
| CN108814774A (en) * | 2018-06-27 | 2018-11-16 | 绍兴市上虞中医医院 | Femoral prosthesis 3D installs orienting locator |
| CN108814774B (en) * | 2018-06-27 | 2023-10-13 | 绍兴市上虞区中医医院 | 3D installation guiding positioner for femoral prosthesis |
| CN111759548A (en) * | 2020-07-22 | 2020-10-13 | 张国强 | Artificial hip joint femoral stem prosthesis |
| CN111759548B (en) * | 2020-07-22 | 2023-11-03 | 张国强 | Artificial hip joint femoral stem prosthesis |
| CN111938876A (en) * | 2020-08-07 | 2020-11-17 | 武汉联影智融医疗科技有限公司 | Combined femoral stem |
| CN116138932A (en) * | 2023-04-21 | 2023-05-23 | 北京纳通医疗科技控股有限公司 | Femoral stem and hip joint prosthesis with same |
| CN116138932B (en) * | 2023-04-21 | 2023-08-04 | 北京纳通医疗科技控股有限公司 | Femoral stem and hip joint prosthesis with same |
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| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |
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| RJ01 | Rejection of invention patent application after publication |