CN104622603A - Combined type femoral stem - Google Patents
Combined type femoral stem Download PDFInfo
- Publication number
- CN104622603A CN104622603A CN201510071148.9A CN201510071148A CN104622603A CN 104622603 A CN104622603 A CN 104622603A CN 201510071148 A CN201510071148 A CN 201510071148A CN 104622603 A CN104622603 A CN 104622603A
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- China
- Prior art keywords
- femoral stem
- combined type
- distal femur
- femurs
- thighbone
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Abstract
The invention discloses a combined type femoral stem. The combined type femoral stem is used for fixing hip joint prostheses and comprises proximal femurs (1) and distal femurs (2). The bottom surfaces of the proximal femurs (1) are sunken to form limiting holes (11) in the shapes of inverted cones, the tops of the distal femurs (2) upwardly extend to form conical limiting columns (21), the conical limiting columns (21) are inserted into the limiting holes (11) in the shapes of the inverted cones, and the proximal femurs (1) with different specifications are connected with the distal femurs (2) with different specifications, so that the combined type femoral stem is adaptive to patients with different anatomic morphologies of pulp chambers. The combined type femoral stem has the advantages that the proximal femurs and the distal femurs are of adjustable structures, and accordingly the combined type femoral stem is wide in applicable patient range and is practical; the prostheses can be stably implanted into the patients, and surgery can be facilitated; stem-shaped structures are favorable for blood supply for the femoral hip chambers of the patients; the combined type femoral stem is excellent in rotation resistance and bone ingrowth, and accordingly the service lives of the prostheses can be prolonged.
Description
Technical field
The present invention relates to a kind of artificial joint prosthesis, particularly relate to a kind of Combined thigh bone handle for hip joint.
Background technology
Type femoral bone end prosthesis is used to the surgical implant replacing human hip femoral component, combinationally uses, for the replacement operation of hip joint half hip with bulb, full acetabular bone.
Existing type femoral bone end prosthesis is generally integral structure, has following shortcoming:
1) use of patient covers a people group of mean people, the hip prosthesis of existing integral structure, seriation, the appearance proportion of near end of thighbone and far-end is fixed value, cannot regulate, but in fact, the femoral bone cavitas medullaris form of patient has multifarious feature, and single hip prosthesis can only meet a kind of patient of femoral bone cavitas medullaris form, and its scope of application has significant limitation;
2) fixed effect is not good enough, and because distal femur is cylindrical, surface is glossing, and the anti-rotation performance of prosthese is more weak, and the surface of near end of thighbone 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.
Summary of the invention
The object of the present invention is to provide a kind of practicality, implant the Combined thigh bone handle stable, anti-rotation is strong.
For achieving the above object, the concrete technical scheme of a kind of Combined thigh bone handle of the present invention is:
A kind of Combined thigh bone handle, for fixing hip prosthesis, comprise near end of thighbone and distal femur, the bottom surface indent of near end of thighbone is formed with the spacing hole of inverted cone, the top of distal femur upwards extends to form the limited post of taper, by entering in the spacing hole of inverted cone by the limited post grafting of taper, the near end of thighbone of different size is connected with the distal femur of different size, to adapt to the patient of different Pulp chamber.
Further, the outside wall surface of distal femur is provided with at least one vertical muscle, femoral stem can be cut in pulp cavity spongy bone by vertical muscle.
Further, distal femur can be provided with 6-10 bar and indulge muscle.
Further, the outside of distal femur is arc, and radian is 1 °-10 °.
Further, femoral stem is titanium alloy material.
Further, the surface of near end of thighbone is provided with plasma spray titanium layer.
The advantage of Combined thigh bone handle of the present invention is:
1) near end of thighbone and distal femur are adjustable structure, larger, more practical to the scope of application of patient;
2) stable, the facilitating operation of Using prosthesis;
3) handle type structure is conducive to the blood confession of femur hip chamber;
4) there is better anti-rotation, have good Bone Ingrowth to extend the prosthese life-span.
Accompanying drawing explanation
fig. 1for the structural representation of Combined thigh bone handle of the present invention
figure;
fig. 2for the action of the near end of thighbone in the present invention is illustrated
figure;
fig. 3for the structural representation of the distal femur in the present invention
figure;
fig. 4for
fig. 3in the signal of cross section of distal femur
figure.
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 Combined thigh bone handle of the present invention.
as Fig. 1extremely
fig. 4shown in, it shows for Combined thigh bone handle of the present invention, for fixing hip prosthesis, comprise near end of thighbone 1 and distal femur 2, the bottom surface indent of near end of thighbone 1 is formed with the spacing hole 11 of inverted cone, the top of distal femur 2 upwards extends to form the limited post 21 of taper, by limited post 21 grafting of taper is entered in the spacing hole 11 of inverted cone, the near end of thighbone 1 of different size is connected with the distal femur 2 of different size, to make any specification, near end of thighbone 1 and any specification of profile, the distal femur 2 of profile all can be used in combination, there is multiformity, convertible multiple near end of thighbone 1 and multiple distal femur 2, with the patient making the near end of thighbone 1 that is connected and distal femur 2 adapt to different Pulp chamber.
Further, the outside wall surface of distal femur 2 is provided with at least one vertical muscle 3, after implantation pulp cavity, femoral stem can be cut in pulp cavity spongy bone by vertical muscle 3, ensure that the stability at good anti-rotation performance and initial stage, it should be noted, in the present invention, distal femur 2 can be provided with 6-10 bar and indulge muscle 3, preferably be provided with 8 vertical muscle 3.
Further, the outside 22 of distal femur 2 is arc, outside 22 has vertical and inclined plane.Wherein, the angle of the vertical of distal femur 2 and the radian of inclined plane can be 1 °-10 °, and preferred radian is 3 °, matches with the physiologic radian of the femoral bone cavitas medullaris with patient.In addition, as shown in Figure 4, the cross section of distal femur 2 preferably adopts circular design.
Further, the top of near end of thighbone 1 is provided with cervical region 12, after femoral stem is implanted pulp cavity, the top rake of scalable cervical region 12 to change implant angle, to reach best implant angle.
Further, femoral stem can be made up of titanium alloy material, such as, adopt and the good Ti6Al4V alloy material of human internal environment's compatibility.Wherein, the surface of near end of thighbone 1 is provided with plasma spray titanium valve layer, increases the roughness on surface, is conducive to Bone Ingrowth to extend the service life of prosthese.
Combined thigh bone handle of the present invention, near end of thighbone and distal femur are adjustable structure, larger, more practical to the scope of application of patient; Using prosthesis is stable, facilitating operation; Handle type structure is conducive to femur hip chamber blood and supplies; There is better anti-rotation, have good Bone Ingrowth to extend the prosthese life-span.
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 (6)
1. a Combined thigh bone handle, for fixing hip prosthesis, it is characterized in that, comprise near end of thighbone (1) and distal femur (2), the bottom surface indent of near end of thighbone (1) is formed with the spacing hole (11) of inverted cone, the top of distal femur (2) upwards extends to form the limited post (21) of taper, by limited post (21) grafting of taper is entered in the spacing hole (11) of inverted cone, the near end of thighbone (1) of different size is connected with the distal femur (2) of different size, to adapt to the patient of different Pulp chamber.
2. Combined thigh bone handle according to claim 1, is characterized in that, the outside wall surface of distal femur (2) is provided with at least one vertical muscle (3), femoral stem can be cut in pulp cavity spongy bone by vertical muscle (3).
3. Combined thigh bone handle according to claim 2, is characterized in that, distal femur (2) can be provided with 6-10 bar and indulge muscle (3).
4. Combined thigh bone handle according to claim 1, is characterized in that, the outside (22) of distal femur (2) is arc, and radian is 1 °-10 °.
5. Combined thigh bone handle according to claim 1, is characterized in that, femoral stem is titanium alloy material.
6. Combined thigh bone handle according to claim 5, is characterized in that, the surface of near end of thighbone (1) is provided with plasma spray titanium layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071148.9A CN104622603A (en) | 2015-02-10 | 2015-02-10 | Combined type femoral stem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071148.9A CN104622603A (en) | 2015-02-10 | 2015-02-10 | Combined type femoral stem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104622603A true CN104622603A (en) | 2015-05-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510071148.9A Pending CN104622603A (en) | 2015-02-10 | 2015-02-10 | Combined type femoral stem |
Country Status (1)
| Country | Link |
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| CN (1) | CN104622603A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106109061A (en) * | 2016-08-05 | 2016-11-16 | 北京爱康宜诚医疗器材有限公司 | Femoral stem |
| CN110464513A (en) * | 2019-09-05 | 2019-11-19 | 北京爱康宜诚医疗器材有限公司 | Positioning component and the femoral prosthesis component with it in femur marrow |
| CN111134904A (en) * | 2018-11-06 | 2020-05-12 | 天津富华医疗科技有限公司 | Bionic artificial hip joint |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2700947A1 (en) * | 1993-02-03 | 1994-08-05 | Noyer Daniel | Prosthetic femoral implant for dysplastic hip |
| CN200980744Y (en) * | 2006-10-28 | 2007-11-28 | 保定康能生物医学工程有限公司 | Surgical implant composite lengthening femur shaft |
| CN101199421A (en) * | 2006-11-28 | 2008-06-18 | 德普伊产品公司 | Modular proximal body trial |
| US7425214B1 (en) * | 2005-03-03 | 2008-09-16 | Howmedica Osteonics Corp. | Hip arthroplasty trialing apparatus with adjustable proximal trial and method |
| US20110046745A1 (en) * | 2002-12-20 | 2011-02-24 | Depuy Products, Inc. | Instrument and associated method of trialing for modular hip stems |
| CN201759699U (en) * | 2010-02-02 | 2011-03-16 | 北京爱康宜诚医疗器材股份有限公司 | Combined femoral component prosthesis |
| CN203244474U (en) * | 2013-05-16 | 2013-10-23 | 重庆润泽医药有限公司 | Hip joint simple combined handle |
| CN103705318A (en) * | 2012-09-28 | 2014-04-09 | 德普伊新特斯产品有限责任公司 | Femoral prosthesis with insertion/extraction feature |
| CN204049936U (en) * | 2014-07-18 | 2014-12-31 | 吉林大学 | For the femur side prosthesis of hip replacement |
-
2015
- 2015-02-10 CN CN201510071148.9A patent/CN104622603A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2700947A1 (en) * | 1993-02-03 | 1994-08-05 | Noyer Daniel | Prosthetic femoral implant for dysplastic hip |
| US20110046745A1 (en) * | 2002-12-20 | 2011-02-24 | Depuy Products, Inc. | Instrument and associated method of trialing for modular hip stems |
| US7425214B1 (en) * | 2005-03-03 | 2008-09-16 | Howmedica Osteonics Corp. | Hip arthroplasty trialing apparatus with adjustable proximal trial and method |
| CN200980744Y (en) * | 2006-10-28 | 2007-11-28 | 保定康能生物医学工程有限公司 | Surgical implant composite lengthening femur shaft |
| CN101199421A (en) * | 2006-11-28 | 2008-06-18 | 德普伊产品公司 | Modular proximal body trial |
| CN201759699U (en) * | 2010-02-02 | 2011-03-16 | 北京爱康宜诚医疗器材股份有限公司 | Combined femoral component prosthesis |
| CN103705318A (en) * | 2012-09-28 | 2014-04-09 | 德普伊新特斯产品有限责任公司 | Femoral prosthesis with insertion/extraction feature |
| CN203244474U (en) * | 2013-05-16 | 2013-10-23 | 重庆润泽医药有限公司 | Hip joint simple combined handle |
| CN204049936U (en) * | 2014-07-18 | 2014-12-31 | 吉林大学 | For the femur side prosthesis of hip replacement |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106109061A (en) * | 2016-08-05 | 2016-11-16 | 北京爱康宜诚医疗器材有限公司 | Femoral stem |
| CN111134904A (en) * | 2018-11-06 | 2020-05-12 | 天津富华医疗科技有限公司 | Bionic artificial hip joint |
| CN111134904B (en) * | 2018-11-06 | 2022-03-01 | 贵州澳特拉斯科技有限公司 | Bionic artificial hip joint |
| CN110464513A (en) * | 2019-09-05 | 2019-11-19 | 北京爱康宜诚医疗器材有限公司 | Positioning component and the femoral prosthesis component with it in femur marrow |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20150520 |