CN113456308B - Double-coating double-acting hip joint system - Google Patents
Double-coating double-acting hip joint system Download PDFInfo
- Publication number
- CN113456308B CN113456308B CN202110786860.2A CN202110786860A CN113456308B CN 113456308 B CN113456308 B CN 113456308B CN 202110786860 A CN202110786860 A CN 202110786860A CN 113456308 B CN113456308 B CN 113456308B
- Authority
- CN
- China
- Prior art keywords
- femoral stem
- double
- acting
- femoral
- hip joint
- 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.)
- Active
Links
- 210000004394 hip joint Anatomy 0.000 title claims abstract description 22
- 238000000576 coating method Methods 0.000 title claims abstract description 8
- 239000011248 coating agent Substances 0.000 title claims abstract description 7
- 238000007747 plating Methods 0.000 claims abstract description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 15
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 15
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 15
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 15
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 15
- 239000011777 magnesium Substances 0.000 claims abstract description 15
- 229910052709 silver Inorganic materials 0.000 claims abstract description 15
- 239000004332 silver Substances 0.000 claims abstract description 15
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 15
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 15
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000011701 zinc Substances 0.000 claims abstract description 15
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 15
- 230000000149 penetrating effect Effects 0.000 claims description 27
- 210000000689 upper leg Anatomy 0.000 claims description 14
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 239000000602 vitallium Substances 0.000 claims description 12
- 238000010146 3D printing Methods 0.000 claims description 9
- 238000005242 forging Methods 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 8
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 8
- 238000013459 approach Methods 0.000 claims description 7
- IQBJFLXHQFMQRP-UHFFFAOYSA-K calcium;zinc;phosphate Chemical compound [Ca+2].[Zn+2].[O-]P([O-])([O-])=O IQBJFLXHQFMQRP-UHFFFAOYSA-K 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 6
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 6
- 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 6
- 210000001624 hip Anatomy 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 description 13
- 230000033001 locomotion Effects 0.000 description 5
- 101150038956 cup-4 gene Proteins 0.000 description 4
- -1 Polyethylene Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229910000684 Cobalt-chrome Inorganic materials 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 206010052306 Periprosthetic osteolysis Diseases 0.000 description 1
- 238000011882 arthroplasty Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000010952 cobalt-chrome Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
- 201000008482 osteoarthritis Diseases 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The present application relates to the field of hip joint prostheses, and in particular to a double-coated double-acting hip joint system. A double-coating double-acting hip joint system comprises a femoral stem, a femoral head, a liner and an acetabular cup, wherein plating layers are arranged on contact surfaces of the femoral head and the liner and contact surfaces of the acetabular cup and the liner, and the plating layers are any one of carbon element, strontium element, tantalum element, silver element, titanium element, zinc element and magnesium element. The contact surface of the femoral head and the inner liner and the contact surface of the acetabular cup and the inner liner are surfaces with relatively frequent movable friction, and any one plating layer of carbon element, strontium element, tantalum element, silver element, titanium element, zinc element and magnesium element is plated on the contact surface to increase the wear resistance of the hip joint prosthesis and prolong the service life of the hip joint prosthesis.
Description
Technical Field
The present application relates to the field of hip joint prostheses, and in particular to a double-coated double-acting hip joint system.
Background
At present, the artificial joint replacement has wide clinical application, and has become the best method for treating osteoarthritis. Polyethylene has been used for artificial hip joint replacement materials for over 40 years, and polyethylene liner prostheses are widely used for their stable quality and price advantages and low friction factor and wear rate, good mechanical properties and biocompatibility.
However, peri-prosthetic osteolysis and aseptic loosening due to wear debris of the prosthetic joint are major complications of total hip arthroplasty and are also the leading causes of prosthetic revision.
Disclosure of Invention
In order to reduce problems caused by wear debris of a hip joint prosthesis and to extend the service life of the hip joint prosthesis, the present application provides a dual-coated double-acting hip joint system.
The application provides a double-coated double-acting hip joint system which adopts the following technical scheme:
a double-coating double-acting hip joint system comprises a femoral stem, a femoral head, a liner and an acetabular cup, wherein plating layers are arranged on contact surfaces of the femoral head and the liner and contact surfaces of the acetabular cup and the liner, and the plating layers are any one of carbon element, strontium element, tantalum element, silver element, titanium element, zinc element and magnesium element.
By adopting the technical scheme, the contact surface of the femoral head and the lining and the contact surface of the acetabular cup and the lining are surfaces with relatively frequent movable friction, and any one plating layer of carbon element, strontium element, tantalum element, silver element, titanium element, zinc element and magnesium element is plated on the contact surface to increase the wear resistance of the hip joint prosthesis and prolong the service life of the hip joint prosthesis.
Preferably, the acetabular cup is made of cobalt-chromium-molybdenum alloy, titanium alloy or high-nitrogen stainless steel in a 3D printing mode/forging mode, and a plating layer is plated on the outer side wall of the acetabular cup, wherein the plating layer is any one of carbon element, magnesium element, strontium element, tantalum element, silver element, titanium element, zinc element, beta zinc calcium phosphate and hydroxyapatite.
By adopting the technical scheme, the main body structure of the acetabular cup is manufactured by adopting a 3D printing mode/forging mode through cobalt-chromium-molybdenum alloy, titanium alloy or high-nitrogen stainless steel, and has better strength. And the wear resistance of the acetabular cup is increased by a surface plating method.
Preferably, the liner is made of ultra high molecular weight polyethylene or high cross-linked ultra high molecular weight polyethylene.
By adopting the technical scheme, the lining is made of the ultra-high molecular weight polyethylene or the high cross-linked ultra-high molecular weight polyethylene, so that the lining has better strength.
Preferably, the femoral head is made of cobalt chrome molybdenum alloy, titanium alloy or ceramic.
By adopting the technical scheme, the femoral head is made of cobalt-chromium-molybdenum alloy, titanium alloy or ceramic, so that the femoral head has better strength.
Preferably, the femoral stem is made of cobalt-chromium-molybdenum alloy, titanium alloy or high-nitrogen stainless steel in a 3D printing mode/forging mode, and the outer surface of the femoral stem is plated with a plating layer, wherein the plating layer is any one of carbon element, magnesium element, strontium element, tantalum element, silver element, titanium element, zinc element, beta zinc calcium phosphate and hydroxyapatite.
Through adopting above-mentioned technical scheme, make the femoral stem through cobalt chromium molybdenum alloy, titanium alloy or high nitrogen stainless steel adopting 3D printing mode/forging mode for the femoral stem has better intensity, makes the femoral stem have better wear resistance in outside cladding layer simultaneously.
Preferably, the proximal end of the femoral stem is provided with a perforation penetrating through the femoral stem, a plurality of longitudinal grooves are formed on a circle of the proximal end of the femoral stem, and the grooves are communicated with the perforation; the position that the perforation is close to the proximal end of the femoral stem is rotationally connected with a rotating part, an internal thread hole is formed in the lower end of the rotating part, a penetrating rod in threaded connection with the rotating part is arranged in the perforation, a pushing block is formed on the outer surface of the penetrating rod, and a pushing groove matched with the pushing block is formed on the inner side wall of the perforation.
Through adopting above-mentioned technical scheme, after the femur stem inserts the femur, through rotating the rotating member, because push block and push away the cooperation in groove and make with rotating member threaded connection's wearing pole to the direction motion of femur stem distal end, the femur stem distal end outwards struts extrusion femur inner wall under push block and push away the cooperation in groove for fix between femur stem and the femur more firm.
Preferably, the proximal end of the femoral stem is formed with a groove coaxial with the through hole, an annular groove is formed in the inner wall of the groove near the proximal end of the femoral stem, an annular limiting block is formed on the outer side of the rotating piece, and the annular limiting block is clamped into the annular groove.
Through adopting above-mentioned technical scheme, through annular groove and annular stopper cooperation messenger rotating member only can rotate along circumference.
Preferably, the pushing blocks are multiple groups, the multiple groups of pushing blocks are arranged along the length direction of the penetrating rod, and the pushing blocks of the same group with the grooves in number are distributed along the circumferential direction of the penetrating rod.
Through adopting above-mentioned technical scheme, set up the multiunit ejector pad along the length direction of wearing the pole and make wearing the pole to the in-process of femoral stem distal end motion, a plurality of positions of femoral stem all can outwards open under the cooperation effect of ejector pad and push away the groove, with the butt fixedly between the femoral inner wall.
Preferably, one side of the push block, which is close to the proximal end of the femoral stem, is a plane, and one side of the push block, which is close to the distal end of the femoral stem, is a smooth cambered surface; the smooth cambered surface of the pushing block gradually approaches to the penetrating rod towards the distal end of the femoral stem; the smooth cambered surface of the pushing block gradually approaches to the direction of penetrating the rod from the middle to the two sides.
Through adopting above-mentioned technical scheme, because the smooth cambered surface of ejector pad is close to the pole of wearing gradually towards the femoral stem distal end direction, when consequently wearing the pole to femoral stem distal end motion, the ejector pad cooperation pushes away the groove and makes the femoral stem open gradually, and gradual change process makes can be applicable to the patient that the femur hole size is different. The smooth cambered surface of the push block gradually approaches to the rod penetrating direction from the middle to two sides, so that the push block only slides relatively with the femoral stem and does not rotate relatively in the process of rod penetrating movement.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the wear-resisting property of the hip joint prosthesis is improved and the service life of the hip joint prosthesis is prolonged by plating any one of carbon element, strontium element, tantalum element, silver element, titanium element, zinc element and magnesium element on the contact surface with frequent relative movable friction.
2. The main body structure of the acetabular cup and the femoral stem is manufactured by adopting a 3D printing mode/forging mode through cobalt-chromium-molybdenum alloy, titanium alloy or high nitrogen stainless steel, so that the acetabular cup has better strength, and the wear resistance of the acetabular cup is improved through a surface coating mode.
Drawings
FIG. 1 is a schematic structural view of an embodiment;
FIG. 2 is a schematic cross-sectional view of an embodiment;
FIG. 3 is an enlarged view at A in FIG. 2;
fig. 4 is a schematic view of the structure of the penetrating rod in the embodiment.
Reference numerals illustrate: 1. a femoral stem; 2. femoral head; 3. a lining; 4. an acetabular cup; 5. perforating; 6. slotting; 7. a groove; 8. a ring groove; 9. a rotating member; 10. an inner hexagonal hole; 11. an internal threaded hole; 12. an annular limiting block; 13. penetrating the rod; 14. a pushing block; 15. pushing the groove.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-4.
The embodiment of the application discloses a double-coating double-acting hip joint system.
As shown in fig. 1 and 2, the dual-coated double-acting hip joint system comprises a femoral stem 1, a femoral head 2, a liner 3 and an acetabular cup 4.
The acetabular cup 4 is made of cobalt-chromium-molybdenum alloy/titanium alloy/high-nitrogen stainless steel in a 3D printing mode/forging mode. The outer side wall of the acetabular cup 4 is plated with a plating layer, and the plating layer can be carbon element/magnesium element/strontium element/tantalum element/silver element/titanium element/zinc element/beta zinc calcium phosphate/hydroxyapatite. The inner side wall of the acetabular cup 4 is plated with a plating layer, and the plating layer can be carbon element/strontium element/tantalum element/silver element/titanium element/zinc element/magnesium element.
The lining 3 is made of ultra-high molecular weight polyethylene/high cross-linking ultra-high molecular weight polyethylene. The inner and outer side walls of the lining 3 are plated with plating layers, and the plating layers can be carbon element/strontium element/tantalum element/silver element/titanium element/zinc element/magnesium element.
The femoral head 2 is made of cobalt-chromium-molybdenum alloy/titanium alloy/ceramic. The outer surface of the femoral head 2 is plated with a plating layer, and the plating layer can be selected from carbon element/strontium element/tantalum element/silver element/titanium element/zinc element/magnesium element.
The femur handle 1 is made of cobalt-chromium-molybdenum alloy/titanium alloy/high nitrogen stainless steel in a 3D printing mode/forging mode. The outer surface of the femoral stem 1 is plated with a plating layer, and the plating layer can be selected from carbon element/magnesium element/strontium element/tantalum element/silver element/titanium element/zinc element/beta zinc calcium phosphate/hydroxyapatite.
The plating method can be selected from vapor deposition method, diffusion method, ion implantation method, coating method, oxidation method, molecular beam epitaxy method, liquid phase growth method, and electrochemical method.
As shown in fig. 2, the lower end of the femoral stem 1 is the proximal end of the femoral stem 1, and the upper end is the distal end of the femoral stem 1. The proximal end of the femoral stem 1 is formed with a circular aperture 5 extending upwardly through the femoral stem 1. Three grooves 6 in the vertical direction are uniformly distributed and formed in a circle on the circumference of the proximal end of the femoral stem 1, the grooves 6 are communicated with the through holes 5, and the lower ends of the grooves 6 penetrate through the femoral stem 1.
As shown in fig. 2 and 3, the proximal end of the femoral stem 1 is formed with a groove 7 coaxial with the through hole 5, and an annular groove 8 is formed on the inner wall of the groove 7 at a position near the proximal end of the femoral stem 1. The rotating piece 9 is arranged in the groove 7, an inner hexagonal hole 10 is formed in the upper end of the rotating piece 9, an inner threaded hole 11 is formed in the lower end of the rotating piece 9, an annular limiting block 12 is formed in the outer side of the rotating piece 9, and the annular limiting block 12 is clamped into the annular groove 8, so that the rotating piece 9 can only rotate along the circumferential direction.
As shown in fig. 2 and 4, a penetrating rod 13 is arranged in the through hole 5, and an external thread is formed at the upper end of the penetrating rod 13 and is in threaded connection with the rotating member 9 in a matching way. Five groups of push blocks 14 are formed at the lower end of the penetrating rod 13 along the length direction of the penetrating rod 13, and the number of each group of push blocks 14 is three and is uniformly distributed along the circumferential direction of the penetrating rod 13. The upper surface of the push block 14 is a plane, and the lower surface of the push block 14 is a smooth cambered surface; in a side view, the lower surface of the push block 14 gradually approaches to the penetrating rod 13 from top to bottom; in a bottom view, the lower surface of the push block 14 gradually approaches the penetrating rod 13 from the middle to the two sides. The femur handle 1 is provided with push grooves 15 corresponding to the push blocks 14 and corresponding to the push blocks 14 at the inner side wall of the through hole 5.
The specific using process comprises the following steps: after the proximal end of the femoral stem 1 is inserted into a femur, the rotating part 9 is operated by a tool to rotate, the rotating part 9 drives the penetrating rod 13 to move downwards, and in the process of the downwards movement of the penetrating rod 13, the inner side walls of the push block 14 and the push groove 15 are extruded, so that the distal end of the femoral stem 1 is propped against the inner wall of the femur outwards.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (5)
1. The double-coating double-acting hip joint system comprises a femoral stem (1), a femoral head (2), a lining (3) and an acetabular cup (4), and is characterized in that: plating layers are arranged on contact surfaces of the femoral head (2) and the liner (3) and contact surfaces of the acetabular cup (4) and the liner (3), and the plating layers are any one of carbon element, strontium element, tantalum element, silver element, titanium element, zinc element and magnesium element; the proximal end of the femoral stem (1) is provided with a perforation (5) penetrating through the femoral stem (1), a plurality of longitudinal grooves (6) are formed in a circle on the circumference of the proximal end of the femoral stem (1), and the grooves (6) are communicated with the perforation (5); the device is characterized in that a rotating piece (9) is rotationally connected to the position, close to the proximal end of the femoral stem (1), of the perforation (5), an internal threaded hole (11) is formed in the lower end of the rotating piece (9), a penetrating rod (13) in threaded connection with the rotating piece (9) is arranged in the perforation (5), a pushing block (14) is formed on the outer surface of the penetrating rod (13), and a pushing groove (15) matched with the pushing block (14) is formed on the inner side wall of the perforation (5); a groove (7) coaxial with the perforation (5) is formed at the proximal end of the femoral stem (1), a ring groove (8) is formed at a position, close to the proximal end of the femoral stem (1), on the inner wall of the groove (7), an annular limiting block (12) is formed at the outer side of the rotating piece (9), and the annular limiting block (12) is clamped into the ring groove (8); the pushing blocks (14) are multiple groups, the multiple groups of pushing blocks (14) are arranged along the length direction of the penetrating rod (13), the number of the pushing blocks (14) of each group is the same as that of the grooves (6), and the pushing blocks (14) of the same group are distributed along the circumferential direction of the penetrating rod (13); the side of the push block (14) close to the proximal end of the femoral stem (1) is a plane, and the side of the push block (14) close to the distal end of the femoral stem (1) is a smooth cambered surface; the smooth cambered surface of the pushing block (14) gradually approaches to the penetrating rod (13) towards the far end direction of the femoral stem (1); the smooth cambered surface of the pushing block (14) gradually approaches to the direction of the penetrating rod (13) from the middle to the two sides.
2. The dual-coated double-acting hip system of claim 1, wherein: the acetabular cup (4) is made of cobalt-chromium-molybdenum alloy, titanium alloy or high-nitrogen stainless steel in a 3D printing mode/forging mode, and a plating layer is plated on the outer side wall of the acetabular cup (4), wherein the plating layer is any one of carbon element, magnesium element, strontium element, tantalum element, silver element, titanium element, zinc element, beta zinc calcium phosphate and hydroxyapatite.
3. The dual-coated double-acting hip system of claim 1, wherein: the inner lining (3) is made of ultra-high molecular weight polyethylene or high cross-linked ultra-high molecular weight polyethylene.
4. The dual-coated double-acting hip system of claim 1, wherein: the femoral head (2) is made of cobalt-chromium-molybdenum alloy, titanium alloy or ceramic.
5. The dual-coated double-acting hip system of claim 1, wherein: the femur stem (1) is made of cobalt-chromium-molybdenum alloy, titanium alloy or high-nitrogen stainless steel in a 3D printing mode/forging mode, and the outer surface of the femur stem (1) is plated with a plating layer, wherein the plating layer is any one of carbon element, magnesium element, strontium element, tantalum element, silver element, titanium element, zinc element, beta zinc calcium phosphate and hydroxyapatite.
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| CN202110786860.2A CN113456308B (en) | 2021-07-12 | 2021-07-12 | Double-coating double-acting hip joint system |
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| CN202110786860.2A CN113456308B (en) | 2021-07-12 | 2021-07-12 | Double-coating double-acting hip joint system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101336847A (en) * | 2008-08-26 | 2009-01-07 | 北京天新福医疗器材有限公司 | Metal hip joint combined handle |
| CN201668538U (en) * | 2010-05-12 | 2010-12-15 | 中国人民解放军第四军医大学 | Tantalum coating artificial hip joint false body |
| CN203280542U (en) * | 2013-04-26 | 2013-11-13 | 北京力达康科技有限公司 | Ionic-spray micropore tantalum coating hip joint prostheses |
| CN104840275A (en) * | 2015-05-22 | 2015-08-19 | 中奥汇成科技股份有限公司 | Artificial hip joint |
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2021
- 2021-07-12 CN CN202110786860.2A patent/CN113456308B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101336847A (en) * | 2008-08-26 | 2009-01-07 | 北京天新福医疗器材有限公司 | Metal hip joint combined handle |
| CN201668538U (en) * | 2010-05-12 | 2010-12-15 | 中国人民解放军第四军医大学 | Tantalum coating artificial hip joint false body |
| CN203280542U (en) * | 2013-04-26 | 2013-11-13 | 北京力达康科技有限公司 | Ionic-spray micropore tantalum coating hip joint prostheses |
| CN104840275A (en) * | 2015-05-22 | 2015-08-19 | 中奥汇成科技股份有限公司 | Artificial hip joint |
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| CN113456308A (en) | 2021-10-01 |
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