JPH02286158A - Artificial joint - Google Patents
Artificial jointInfo
- Publication number
- JPH02286158A JPH02286158A JP1108696A JP10869689A JPH02286158A JP H02286158 A JPH02286158 A JP H02286158A JP 1108696 A JP1108696 A JP 1108696A JP 10869689 A JP10869689 A JP 10869689A JP H02286158 A JPH02286158 A JP H02286158A
- Authority
- JP
- Japan
- Prior art keywords
- titanium nitride
- femoral head
- bone head
- head part
- head
- 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.)
- Pending
Links
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims abstract description 18
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 15
- 229910001069 Ti alloy Inorganic materials 0.000 abstract description 6
- 210000000588 acetabulum Anatomy 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 210000000689 upper leg Anatomy 0.000 abstract description 4
- 229910000883 Ti6Al4V Inorganic materials 0.000 abstract 1
- 210000004394 hip joint Anatomy 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 4
- 210000000629 knee joint Anatomy 0.000 description 3
- 210000000323 shoulder joint Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
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)
- Materials For Medical Uses (AREA)
- Prostheses (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
この発明は、人体等の股関節、肩関節、膝関節などとし
て用いられる人工関節に関する。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an artificial joint used as a hip joint, shoulder joint, knee joint, etc. of the human body.
「従来の技術」
近年整形外科の領域においては、股関節、肩関節、膝関
節などの疾患に、関節部分を人工関節で置換する方法つ
（一般的に行われている。このような人工関節としては
、例えば金属製大腿骨頭と高密度ポリエチレン製寛骨臼
蓋との組み合わせからなる人工股関節などが知られてい
る。``Prior Art'' In recent years, in the field of orthopedics, methods have been developed to treat diseases such as the hip joint, shoulder joint, and knee joint by replacing the joint with an artificial joint. For example, an artificial hip joint made of a combination of a metal femoral head and a high-density polyethylene acetabulum is known.
ところで、このような人工股関節にあっては、ゆるみ、
摩耗、破損、感染などの問題を解決するためその材質に
おいても種々の改良がなされており、寛骨臼蓋にはテフ
ロンや超高分子量ポリエチレンが、また大腿骨頭にはＣ
ｏ−Ｃｒ−Ｍｏ合金や５ＵＳ３１６Ｌなどが用いられる
でおり、さらには骨頭部のみをアルミナ等のセラミック
スで形成したものも知られている。また、特に大腿骨頭
としては、＾ＳＴＭ Ｐｕｂｌｉｃａｔｉｏｎ Ｃｏｄ
ｅ Ｎｏ、０４−７９６０００−５４’Ｔｉｔａｎｉｕ
ｍ Ａ１１ｏｙｓ ｉｎ Ｓｕｒｇｉｃａｌ Ｉｍｐｌ
ａｎｔｓ’に開示されているチタン合金単一で製作され
たものか種々の優れた性状を有し、好適とされている。By the way, with such artificial hip joints, loosening,
In order to solve problems such as wear, breakage, and infection, various improvements have been made to the materials used, including Teflon and ultra-high molecular weight polyethylene for the acetabular cap, and C for the femoral head.
O-Cr-Mo alloy, 5US316L, etc. are used, and there are also known ones in which only the bone head is made of ceramics such as alumina. In addition, especially for the femoral head, ^STM Publication Cod
e No, 04-796000-54'Titaniu
m A11oys in Surgical Impl
The titanium alloy disclosed in ``Ants'' has various excellent properties and is considered suitable.
「発明が解決しようとする課題」
しかしながら上記チタン合金製の大腿骨頭にあっては、
チタン合金が耐摩耗性に劣っていることから、特に寛骨
臼蓋内にてこれと摺動する骨頭部の損耗が多くなり、耐
久性が不十分であるといった不都合がある。"Problem to be solved by the invention" However, in the femoral head made of titanium alloy,
Since the titanium alloy has poor wear resistance, there is a problem that the bone head that slides in the acetabular capsule suffers a lot of wear and tear, resulting in insufficient durability.
この発明は上記事情に鑑みてなされたもので、骨頭部に
おける損耗を改善した人工関節を提供することにある。The present invention was made in view of the above circumstances, and an object of the present invention is to provide an artificial joint in which wear and tear on the femoral head is improved.
１課題を解決するための手段」
この発明の人工関節では、骨頭部に窒化チタンをコーテ
ィングしたことを上記課題の解決手段とした。1. Means for Solving the Problem In the artificial joint of the present invention, a means for solving the above problem is that the femoral head is coated with titanium nitride.
「作用 」
この発明の人工関節によれば、耐摩耗性に優れた窒化チ
タンを骨頭部にコーティングしたので、骨頭部における
損耗が改善される。"Operation" According to the artificial joint of the present invention, since the femoral head is coated with titanium nitride, which has excellent wear resistance, wear and tear on the femoral head is improved.
「実施例」 以下、この発明を図面を利用して詳しく説明する。"Example" Hereinafter, this invention will be explained in detail using the drawings.
第１図はこの発明を人工股関節に適用した例を示すもの
で、第１図中符号１は大腿骨頭、２は寛骨臼蓋である。FIG. 1 shows an example in which the present invention is applied to an artificial hip joint. In FIG. 1, reference numeral 1 indicates the femoral head and 2 indicates the acetabulum.
大腿骨頭ｌは、椀状の寛骨臼Ｍ２内に枢着される略球状
の骨頭部３と、大腿骨Ａに挿通され固定される先端側が
窄まった棒状のステム４と、これら骨頭３およびステム
４を連結する連結部５とからなるものである。The femoral head L includes a substantially spherical femoral head 3 pivotally mounted within a bowl-shaped acetabulum M2, a rod-shaped stem 4 with a tapered tip that is inserted into and fixed to the femur A, and these femoral heads 3 and It consists of a connecting part 5 that connects the stem 4.
この大腿骨頭ｌは全体が例えばＴ １−６Ａ ｌ−４Ｖ
等のチタン合金からなるもので、骨頭部３には窒化チタ
ンがコーティングされて窒化チタンＶ４６が形成されて
いる。窒化チタン膜６はその厚さが数十人〜数百μＭ程
度の６ので、骨頭部３表面上に均一に形成されたちので
ある。ここで、窒化チタン膜６の厚さを１０Å以下とす
るのは、使用に際しての骨頭部３と寛骨臼蓋２との摺動
に起因して生ずる摩擦に長期に亙って堪えるには不十分
な厚さであり、好ましくない。また、窒化チタン膜６の
厚さが数百μＲ程度であれば実用上十分な耐摩耗性を有
することから、数百μ肩を越えた厚さにするのは実用上
メリットがなく、コーティングにあたってのコストが上
昇するので好ましくない。The entire femoral head l is, for example, T 1-6A l-4V.
The femoral head 3 is coated with titanium nitride to form titanium nitride V46. Since the titanium nitride film 6 has a thickness of about several tens to hundreds of μM, it is uniformly formed on the surface of the bone head 3. Here, the thickness of the titanium nitride film 6 is set to 10 Å or less because it is not suitable for long-term resistance to friction caused by sliding between the femoral head 3 and the acetabular cap 2 during use. Thick enough to be undesirable. In addition, if the thickness of the titanium nitride film 6 is about several hundred micrometers, it has sufficient wear resistance for practical purposes, so making it thicker than several hundred micrometers has no practical advantage, and when coating This is not preferable because it increases the cost.
このような構成の大腿骨頭ｌを作製するには、骨頭部３
、ステム４および連結部５を例えばＴ ｉ６Ａ ＋−４
Ｖのチタン合金により一体成形し、その後骨頭部３に窒
化チタンをコーティングして窒化チタン膜６を形成する
。To produce the femoral head l with such a configuration, the femoral head 3
, the stem 4 and the connecting part 5 are, for example, T i6A +-4
The bone head 3 is integrally molded with a titanium alloy of V, and then the femoral head 3 is coated with titanium nitride to form a titanium nitride film 6.
ここで窒化チタン膜６の形成にあたっては、骨頭部３全
体に均一かつ強固にコーティングできることからイオン
ブレーティング法が好適に採用されるが、他に蒸着法や
スパッタ法を用いることもできる。イオンブレーティン
グ法としては、直流法、高周波法、クラスタ・イオンビ
ーム蒸着法、熱陰極法より求める性状に応じて適宜に選
択され採用される。Here, in forming the titanium nitride film 6, the ion-blating method is preferably employed because it can uniformly and firmly coat the entire bone head 3, but other methods such as vapor deposition and sputtering can also be used. The ion blating method is appropriately selected and employed depending on the desired properties from among the direct current method, high frequency method, cluster ion beam evaporation method, and hot cathode method.
このような大腿骨頭ｌにあっては、骨頭部３に窒化チタ
ン膜６が形成されていることから、使用に際しての寛骨
臼Ｍ２との摺動に伴う骨頭部３の損耗が改善され、よっ
て耐久性に優れたらのとなる。また、従来の骨頭部のみ
をセラミックスにしたしのに比べて全体を一体成形し、
骨頭部３のみをコーティングするのみで作製することが
できることから、コストの低減を図ることができる。In such a femoral head l, since the titanium nitride film 6 is formed on the femoral head 3, wear and tear on the femoral head 3 caused by sliding with the acetabulum M2 during use is improved, and thus It has excellent durability. In addition, compared to the conventional Shino where only the bone head is made of ceramic, the entire bone is molded in one piece,
Since it can be produced by coating only the femoral head 3, it is possible to reduce costs.
なお、上記実施例においては大腿骨頭ｌをチタン合金に
より形成したが、本発明はこれに限定されることなく、
他の金属やセラミックスなどによって形成してもよい。Although the femoral head l was formed of a titanium alloy in the above embodiment, the present invention is not limited to this.
It may also be formed of other metals, ceramics, or the like.
また、上記実施例では本発明の人工関節を人工股関節の
大腿骨頭に適用したが、これに限定されることなく、池
に例えば人工肩関節、人工膝関節などの骨頭部を有する
関節部位に適用することができる。Furthermore, in the above embodiments, the artificial joint of the present invention is applied to the femoral head of an artificial hip joint, but the present invention is not limited to this, and can be applied to other joints having a femoral head, such as an artificial shoulder joint or an artificial knee joint. can do.
「発明の効果」
以上説明したようにこの発明の人工関節は、骨頭部を有
し、該骨頭部に窒化チタンをコーティングしてなるもの
であるから、骨頭部における損耗が改外され、よって耐
久性に優れたしのとなる。"Effects of the Invention" As explained above, the artificial joint of the present invention has a femoral head, and the femoral head is coated with titanium nitride, so wear and tear on the femoral head is reduced and durability is improved. Becomes an excellent ninja.
また、従来の骨頭部のみをセラミックスにしたしのに比
べて全体を一体成形し、骨頭部のみをコーティングする
のみで作製することができることがら、コストの低減を
図ることができる。Furthermore, compared to conventional oscilloscopes in which only the femoral head is made of ceramic, the entire femoral head can be integrally molded and can be manufactured by coating only the femoral head, thereby reducing costs.
第１図はこの発明の人工関節を人工股関節における大腿
骨頭に適用した場合の一実施例を示す図であって、第１
図は人工股関節の概略構成図である。
１・・・・大腿骨頭、
２ ・ 寛骨臼蓋、
３・・・・・骨頭、
・窒化チタン嘆。FIG. 1 is a diagram showing an embodiment in which the artificial joint of the present invention is applied to the femoral head of an artificial hip joint.
The figure is a schematic configuration diagram of an artificial hip joint. 1. Femoral head, 2. Acetabular head, 3. Femoral head, ・Titanium nitride.
Claims (1)
特徴とする人工関節。[Scope of Claims] An artificial joint having a bone head, characterized in that the bone head is coated with titanium nitride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1108696A JPH02286158A (en) | 1989-04-27 | 1989-04-27 | Artificial joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1108696A JPH02286158A (en) | 1989-04-27 | 1989-04-27 | Artificial joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02286158A true JPH02286158A (en) | 1990-11-26 |
Family
ID=14491322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1108696A Pending JPH02286158A (en) | 1989-04-27 | 1989-04-27 | Artificial joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02286158A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0573694A2 (en) * | 1990-09-17 | 1993-12-15 | Michael J. Pappas | Prothesis with biologically inert wear resistant surface |
| US5314475A (en) * | 1990-03-23 | 1994-05-24 | Detlev Repenning | Method for producing osteo-integrating surfaces on skeletal implants and skeletal implants with osteo-integrating surfaces |
| JP2011101806A (en) * | 2005-01-07 | 2011-05-26 | Inframat Corp | Coated medical device |
| US10182924B2 (en) | 2004-12-28 | 2019-01-22 | DePuy Synthes Products, Inc. | Prosthetic joint with articulating surface layers comprising ADLC |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58159741A (en) * | 1982-03-19 | 1983-09-22 | 三菱マテリアル株式会社 | High rigidity orthopedic surgical implant member excellent in corrosion resistance and anti-wear property |
| JPS62258669A (en) * | 1986-05-01 | 1987-11-11 | 三井造船株式会社 | Artificial bone for implant |
| JPS63154179A (en) * | 1986-12-19 | 1988-06-27 | 川崎製鉄株式会社 | Surface modification of medical metal implant material |
| JPH01148263A (en) * | 1987-12-07 | 1989-06-09 | Tokyo Baiteku Kenkyusho:Kk | Medical material and its preparation |
-
1989
- 1989-04-27 JP JP1108696A patent/JPH02286158A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58159741A (en) * | 1982-03-19 | 1983-09-22 | 三菱マテリアル株式会社 | High rigidity orthopedic surgical implant member excellent in corrosion resistance and anti-wear property |
| JPS62258669A (en) * | 1986-05-01 | 1987-11-11 | 三井造船株式会社 | Artificial bone for implant |
| JPS63154179A (en) * | 1986-12-19 | 1988-06-27 | 川崎製鉄株式会社 | Surface modification of medical metal implant material |
| JPH01148263A (en) * | 1987-12-07 | 1989-06-09 | Tokyo Baiteku Kenkyusho:Kk | Medical material and its preparation |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5314475A (en) * | 1990-03-23 | 1994-05-24 | Detlev Repenning | Method for producing osteo-integrating surfaces on skeletal implants and skeletal implants with osteo-integrating surfaces |
| EP0573694A2 (en) * | 1990-09-17 | 1993-12-15 | Michael J. Pappas | Prothesis with biologically inert wear resistant surface |
| EP0573694A3 (en) * | 1990-09-17 | 1994-11-17 | Michael J Pappas | Prothesis with biologically inert wear resistant surface. |
| US10182924B2 (en) | 2004-12-28 | 2019-01-22 | DePuy Synthes Products, Inc. | Prosthetic joint with articulating surface layers comprising ADLC |
| JP2011101806A (en) * | 2005-01-07 | 2011-05-26 | Inframat Corp | Coated medical device |
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