CN102188297A - Near-end fusion filling sleeve combined thighbone stem - Google Patents
Near-end fusion filling sleeve combined thighbone stem Download PDFInfo
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- CN102188297A CN102188297A CN201010122669XA CN201010122669A CN102188297A CN 102188297 A CN102188297 A CN 102188297A CN 201010122669X A CN201010122669X A CN 201010122669XA CN 201010122669 A CN201010122669 A CN 201010122669A CN 102188297 A CN102188297 A CN 102188297A
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- femoral stem
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- fills
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Abstract
The invention relates to a near-end fusion filling sleeve combined thighbone stem, which comprises a near-end fusion filling sleeve and a thighbone stem, wherein the whole body or surface of the near-end fusion filling sleeve is formed in a three-dimensional mesh structure; mesh units are communicated, a conical combined section in the middle of the thighbone stem is matched with a conical hole in the near-end fusion filling sleeve; a groove is formed at the lower end of the conical hole; a protruding tooth is arranged on the lower end of the conical combined section of the thighbone; a bone implanting hole is formed at a proper position on the near-end fusion filling sleeve and is filled with autologous or xenogenous crush bone granules; and after implantation by operation, xenogenous bone tissues permeate and grown in the three-dimensional mesh and fuse and grow together with the crush bone granules filled in the bone implanting hole, so that the looseness between the artificial hip joint bone fusion thighbone stem prosthesis and sclerotin can be prevented effectively for a long time.
Description
Technical field
A kind of femur implant prosthese of using when the present invention relates to artificial hip joint replacing, particularly a kind of near-end merge fills cover assembly femoral stem.
Background technology
The artificial hip joint replacing operation has been a kind of more common surgical operation before the more than ten years, As time goes on, much more more and more the early stage artificial prosthesis of implanting enters the revision procedure phase because of the inefficacy of a variety of causes, the femur side to overhaul normal existence near end of thighbone bone in various degree damaged, the a large amount of disappearances of spongy bone and damaged in pulp cavity when serious with cortical bone, form thick pulp cavity, with bone cement carry out filling fixedly the time the little lock effect between bone cement and the bone reduce, early stage loosening probability increases.Progress along with industry and medical skill since the nineties in last century constantly has novel handle body to occur, for example the S-ROM assembly type type femoral bone end prosthesis of U.S. DePuy company release is exactly one of representative type of these novel handle bodies, the typical structure of this class assembly type type femoral bone end prosthesis is exactly to have increased a filling cover that is used to fill the near end of thighbone pulp cavity in the outside of femoral stem near-end, because filling the cover part with near end of thighbone, femoral stem separates, make this assembly type type femoral bone end prosthesis implant surgery become easy, the mode of assembly can solve various possibility problems easily, as the individual eccentric throw difference of patient's neck of femur, top rake difference, femur diameter and difference in length or the like, obviously having simplified operation, is comparatively ideal femur jointing repair prosthesis.But because the articular surface material causes the atrophy of osteocyte degeneration still inevitable through the caused molten ossein of chip that long term wear comes off, therefore the loosening handle body that still might cause of the disengaging in gap, interface is implanted ultimate failure between type femoral bone end prosthesis and sclerotin, therefore how to keep the long-term stability of implanting prosthetic in femoral bone cavitas medullaris to remain everyway in the problem of constantly exploring.
Summary of the invention
Thereby the objective of the invention is provides a kind of near-end fusion filling cover assembly femoral stem that can prevent long-term loosening by near-end filling cover and osseous tissue fusion for overcoming above-mentioned defective.
For achieving the above object, the present invention takes following design:
A kind of near-end merges fills cover assembly femoral stem, include near-end and merge filling cover and femoral stem, it is characterized in that near-end merges the filling cover and is made into the shape that near-end is thick, far-end is gradually little according to the damaged anatomic form of common near end of thighbone pulp cavity, near-end merges filling cover entire body or the surface is made of the three dimensional network pore structure, this three dimensional network pore structure can be a monolayer, also can be multiwalled; Merge filling the cover appropriate location at near-end is provided with the bone grafting hole and is used to fill broken osseous granules from body or allosome; The femoral stem middle part is provided with the taper adapter section, the hole that the center that near-end merge to be filled cover holds femoral stem is designed to and the match bellmouth of coupling of femoral stem taper adapter section, the lower end of this bellmouth is provided with groove, the lower end of femoral stem taper adapter section is provided with near-end merges the double wedge that filling cover centre bore lower end groove is nested and mates, and it also can be a plurality of that the quantity of groove and double wedge can be 1.At first near-end is merged during use and fill cover implanted femur near-end bone defect and compress sturdy with the sclerotin outer wall, select suitable femoral stem forward leaning angle then and femoral stem inserted near-end to merge the filling cover, femoral stem and near-end are merged between the filling cover compress, this moment, corresponding groove and double wedge were meshing with each other locking to prevent that the later stage femoral stem from rotating.
Advantage of the present invention is:
1, near-end of the present invention merges fills cover assembly femoral stem, it includes near-end and merges filling cover and femoral stem, described near-end merges filling cover entire body or the surface is made of the three dimensional network pore structure, wherein be interconnected between each unit of mesh, this three dimensional network pore structure can be a monolayer, also can be multiwalled, merge to fill the cover appropriate location at near-end and be provided with the bone grafting hole and be used to fill broken osseous granules from body or allosome, operation is implanted the back by the time the infiltration of outside osseous tissue is grown into three-dimensional mesh and and near-end merge to fill can reach after the broken osseous granules fusion growth of filling in the cover bone grafting hole is integral and prevent long-term effectively that near-end from merging to fill loosening effect takes place between cover assembly femoral stem and sclerotin.
2, near-end of the present invention merges fills cover assembly femoral stem, its femoral stem middle part is provided with the taper adapter section, the hole that the center that near-end merge to be filled cover holds femoral stem is designed to and the match bellmouth of coupling of femoral stem taper adapter section, the lower end of this bellmouth is provided with some grooves, the lower end of femoral stem taper adapter section is provided with near-end merges the double wedge that filling cover centre bore lower end groove is nested and mates, it also can be a plurality of that the number of described groove and double wedge can be 1, select suitable forward leaning angle that femoral stem is inserted near-end during use and merge and fill cover and compress, this moment, corresponding groove and double wedge were meshing with each other locking to prevent that the later stage femoral stem from rotating.
3, near-end of the present invention merges and fills cover assembly femoral stem, and its near-end merges fills the whole or part of outer surface that cover contact with sclerotin and be provided with hydroxyapatite coating layer, has the function of inducing osteocyte to grow.
4, near-end of the present invention merges filling cover assembly femoral stem, and its uses medical metal or bioceramic to make, so it has good biocompatibility.
Description of drawings
It is the embodiment sketch map of three dimensional network pore structure that Fig. 1 fills the cover entire body for near-end of the present invention merges
Fig. 2 fills the application state sketch map that cover and femoral stem embodiment insert locking and implanted femur for near-end of the present invention merges
Fig. 3 is another embodiment of the present invention sketch map
Fig. 4 is further embodiment of this invention sketch map
The embodiment sketch map that Fig. 5 fills cover bone grafting hole and implants broken osseous granules for near-end of the present invention merges
Fig. 6 inserts the embodiment sketch map of adjusting forward leaning angle when near-end merges the filling cover for femoral stem of the present invention
Fig. 7 is the local enlarged diagram of monolayer three dimensional network pore structure of the present invention
Fig. 8, Fig. 9 are the mesh-structured local enlarged diagram of multi-layer three-dimension of the present invention
The specific embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present invention is described in further details.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, near-end of the present invention merges fills cover assembly femoral stem, it includes near-end and merges filling cover (1) and femoral stem (4), described near-end merges fills cover (1) entire body or surperficial by three dimensional network pore structure (2) formation, wherein is interconnected between each mesh unit; As Fig. 7, Fig. 8, shown in Figure 9, this three dimensional network pore structure (2) can be a monolayer, also can be multiwalled, merge to fill cover (1) appropriate location at near-end and can reserve bone grafting hole (3) and be used to fill broken osseous granules (9) from body or allosome, three dimensional network pore structure (2) that operation is implanted the back by the time the infiltration of outside osseous tissue is grown into and and near-end merge can reach after broken osseous granules (9) fusion growth of filling in the bone grafting hole (3) of filling cover (1) is integral and prevent long-term effectively that near-end from merging to fill loosening effect takes place between cover assembly femoral stem and sclerotin.Near-end of the present invention merges fills cover assembly femoral stem, its femoral stem (4) middle part is provided with taper adapter section (5), the hole that the center that near-end merge to be filled cover (1) holds femoral stem (4) is designed to and the match bellmouth (7) of coupling of femoral stem taper adapter section (5), the lower end of this bellmouth (7) is provided with some grooves (8), the lower end of femoral stem taper adapter section (5) is provided with near-end merges the double wedge (6) that filling cover (1) centre bore lower end groove (8) is nested and mates, the number of described groove (8) and double wedge (6) can be 1, also can be a plurality of, select suitable forward leaning angle that femoral stem (4) is inserted near-end during use and merge and fill cover (1) and compress, corresponding groove (8) and double wedge (6) were meshing with each other and locked to prevent that later stage femoral stem (4) from rotating this moment.
Near-end of the present invention merges filling cover assembly femoral stem and adopts laser or high-power electron beam processing method melt molding usually, also can with methods such as spark machined, chemical attack cast or the femoral stem blank of forging molding on etching, erode away needed three dimensional network pore structure (2), because of above-mentioned processing method is known technology, thus this do not do more speak more bright.Near-end of the present invention merges fills cover assembly femoral stem, it uses medical metal or bioceramic to make, therefore it has good biocompatibility, its near-end merges fills the whole or part of outer surface that cover (1) contacts with sclerotin and is provided with hydroxyapatite coating layer, have the function of inducing the osteocyte growth, this hydroxyapatite coating layer can adopt conventional plasma spraying method or the heavy collection method of electrochemistry and sintering process to form.
Claims (6)
1. a near-end merges filling cover assembly femoral stem, it is characterized in that, he includes near-end and merges filling cover (1) and femoral stem (4), described near-end merges filling cover (1) entire body or the surface is made of three dimensional network pore structure (2), wherein be interconnected between each mesh unit, the cross sectional shape of this three dimensional network pore structure (2) does not have particular requirement.
2. near-end according to claim 1 merges fills cover assembly femoral stem, it is characterized in that described three dimensional network pore structure (4) can be a monolayer, also can be multiwalled.
3. near-end according to claim 1 merges fills cover assembly femoral stem, it is characterized in that, femoral stem (4) middle part is provided with taper adapter section (5), the hole that the center that near-end merge to be filled cover (1) holds femoral stem (4) is designed to and the match bellmouth (7) of coupling of femoral stem taper adapter section (5), the lower end of this bellmouth (7) is provided with some grooves (8), the lower end of femoral stem taper adapter section (5) is provided with near-end merges the double wedge (6) that filling cover (1) centre bore lower end groove (8) is nested and mates, the number of described groove (8) and double wedge (6) can be 1, also can be a plurality of.
4. near-end according to claim 1 merges fills cover assembly femoral stem, it is characterized in that, merges at near-end and fills cover (1) appropriate location and be provided with bone grafting hole (3) and be used to fill broken osseous granules (9) from body or allosome.
5. near-end according to claim 1 merges fills cover assembly femoral stem, it is characterized in that it adopts medical metal, bioceramic manufacturing.
6. near-end according to claim 1 merges fills cover assembly femoral stem, it is characterized in that, near-end merges fills the whole or part of outer surface that cover (1) contacts with sclerotin and be provided with hydroxyapatite coating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010122669XA CN102188297A (en) | 2010-03-12 | 2010-03-12 | Near-end fusion filling sleeve combined thighbone stem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010122669XA CN102188297A (en) | 2010-03-12 | 2010-03-12 | Near-end fusion filling sleeve combined thighbone stem |
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| CN102188297A true CN102188297A (en) | 2011-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010122669XA Pending CN102188297A (en) | 2010-03-12 | 2010-03-12 | Near-end fusion filling sleeve combined thighbone stem |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102871776A (en) * | 2012-09-26 | 2013-01-16 | 无锡市诚信洗选设备有限公司 | Hip joint femoral stem |
| CN106691633A (en) * | 2016-12-29 | 2017-05-24 | 北京爱康宜诚医疗器材有限公司 | Femoral near-end sleeve component |
| CN107157626A (en) * | 2017-07-18 | 2017-09-15 | 优适医疗科技（苏州）有限公司 | Distal femoral component prosthese |
| CN115645119A (en) * | 2022-12-12 | 2023-01-31 | 兰州西脉记忆合金股份有限公司 | Hip joint prosthesis memory alloy femoral stem component system and using method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101006946A (en) * | 2006-01-25 | 2007-08-01 | 郑诚功 | Artificial femur structure |
| CN101524296A (en) * | 2008-03-03 | 2009-09-09 | 曼德卡姆有限公司 | Artificial hip joint femoral stem |
| CN201394098Y (en) * | 2009-06-01 | 2010-02-03 | 北京爱康宜诚医疗器材有限公司 | Artificial hip joint fused femoral stem |
| CN201624813U (en) * | 2010-03-12 | 2010-11-10 | 北京爱康宜诚医疗器材有限公司 | Proximal-fusion filling sheath assembled femoral shaft |
-
2010
- 2010-03-12 CN CN201010122669XA patent/CN102188297A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101006946A (en) * | 2006-01-25 | 2007-08-01 | 郑诚功 | Artificial femur structure |
| CN101524296A (en) * | 2008-03-03 | 2009-09-09 | 曼德卡姆有限公司 | Artificial hip joint femoral stem |
| CN201394098Y (en) * | 2009-06-01 | 2010-02-03 | 北京爱康宜诚医疗器材有限公司 | Artificial hip joint fused femoral stem |
| CN201624813U (en) * | 2010-03-12 | 2010-11-10 | 北京爱康宜诚医疗器材有限公司 | Proximal-fusion filling sheath assembled femoral shaft |
Non-Patent Citations (1)
| Title |
|---|
| 徐辉: "人工髋关节假体的分类和应用", 《中华损伤与修复杂志》, vol. 4, 30 April 2009 (2009-04-30) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102871776A (en) * | 2012-09-26 | 2013-01-16 | 无锡市诚信洗选设备有限公司 | Hip joint femoral stem |
| CN106691633A (en) * | 2016-12-29 | 2017-05-24 | 北京爱康宜诚医疗器材有限公司 | Femoral near-end sleeve component |
| CN107157626A (en) * | 2017-07-18 | 2017-09-15 | 优适医疗科技（苏州）有限公司 | Distal femoral component prosthese |
| CN115645119A (en) * | 2022-12-12 | 2023-01-31 | 兰州西脉记忆合金股份有限公司 | Hip joint prosthesis memory alloy femoral stem component system and using method thereof |
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Application publication date: 20110921 |