JPH01148254A - Artificial bone - Google Patents
Artificial boneInfo
- Publication number
- JPH01148254A JPH01148254A JP62308986A JP30898687A JPH01148254A JP H01148254 A JPH01148254 A JP H01148254A JP 62308986 A JP62308986 A JP 62308986A JP 30898687 A JP30898687 A JP 30898687A JP H01148254 A JPH01148254 A JP H01148254A
- Authority
- JP
- Japan
- Prior art keywords
- artificial
- hollow
- artificial bone
- interior
- stem
- 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
- 210000000988 bone and bone Anatomy 0.000 title claims description 48
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000010935 stainless steel Substances 0.000 claims abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 6
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 5
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 5
- 239000010936 titanium Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 9
- 239000002184 metal Substances 0.000 abstract description 9
- 239000000919 ceramic Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 238000005245 sintering Methods 0.000 abstract description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 5
- 239000000843 powder Substances 0.000 abstract description 5
- 238000005266 casting Methods 0.000 abstract description 2
- 238000005242 forging Methods 0.000 abstract description 2
- 210000000689 upper leg Anatomy 0.000 abstract 1
- 210000004394 hip joint Anatomy 0.000 description 5
- 210000001185 bone marrow Anatomy 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000013585 weight reducing agent Substances 0.000 description 3
- 210000000588 acetabulum Anatomy 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- AZBAQHIVVLQMFX-UHFFFAOYSA-N 4-(2,4-dimethylphenyl)-5-methyl-1,3-thiazol-2-amine Chemical compound S1C(N)=NC(C=2C(=CC(C)=CC=2)C)=C1C AZBAQHIVVLQMFX-UHFFFAOYSA-N 0.000 description 1
- -1 5tJS317 Substances 0.000 description 1
- 244000273618 Sphenoclea zeylanica Species 0.000 description 1
- 210000000784 arm bone Anatomy 0.000 description 1
- 239000002639 bone cement Substances 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 210000001145 finger joint Anatomy 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 210000000629 knee joint Anatomy 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 210000000323 shoulder joint Anatomy 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/20—Opening, closing or clamping
- B29C33/202—Clamping means operating on closed or nearly closed mould parts, the clamping means being independently movable of the opening or closing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/20—Opening, closing or clamping
- B29C33/202—Clamping means operating on closed or nearly closed mould parts, the clamping means being independently movable of the opening or closing means
- B29C2033/207—Clamping means operating on closed or nearly closed mould parts, the clamping means being independently movable of the opening or closing means mould clamping by pivoting members
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (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）
本発明は人工骨に関するものである。詳しく述べると本
発明は、軽量で患者に対する負担の少ない人工骨に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an artificial bone. Specifically, the present invention relates to an artificial bone that is lightweight and places less burden on a patient.
（従来の技術）
近年、整形外科の分野において、骨折あるいは病気によ
る障害部分を代替する補綴的用途において、人工関節に
代表される人工骨の使用がなされている。(Prior Art) In recent years, in the field of orthopedics, artificial bones, typified by artificial joints, have been used in prosthetic applications to replace damaged parts due to fractures or diseases.
例えば、関節は基本的に無痛性、可動性、支持性という
３つの属性を有しているが、関節を構成する骨・軟骨に
先天的あるいは後天的原因による消耗・破壊が生じ、関
節の円滑な運動が阻害されると疼痛を生じ疼痛のためあ
るいは関節面の変形の為に支持性をも失われるに至る。For example, joints basically have three attributes: painlessness, mobility, and support. When movement is inhibited, pain occurs and support is lost due to pain or deformation of the joint surface.
このような破壊・変形が高度で関節面の形成が困難であ
る場合には、関節臼、関節頭の一方、あるいは両方を切
除して人工物で置換する方法（人工物による関節置換形
成術［Ｐｒｏｓｔｈｅｔｉｃ Ｒｅｐｌａｃｅｍｅｎｔ
ＡｒｔｈｒｏｐｌａＳｔＶ ］ ）がとられ、股関節
の場合を例に挙げれば、大腿骨頭を人工骨頭で置換する
部分置換、あるいは寛骨臼を人工臼蓋で、大腿骨頭を人
工骨頭で全置換することが行なわれている。If such destruction and deformation are severe enough to make it difficult to form a joint surface, there is a method in which one or both of the acetabulum and the articular head are removed and replaced with an artificial object (artificial joint replacement [ Prosthetic Replacement
In the case of the hip joint, for example, partial replacement of the femoral head with an artificial femoral head, or complete replacement of the acetabulum with an artificial acetabular head and the femoral head with an artificial femoral head is performed. ing.
このような人工骨を構成する材質としては、ステンレス
鋼、コバルト・クロム合金、チタンないしはチタン合金
などの金属、高密度ポリエチレンなどの合成樹脂、各種
セラミックスなどが、代替する部位の必要とする機能に
応じて用いられているが、特に強度的に高い性能が必要
とされる部位においては、金属が用いられている。Materials that can be used to construct such artificial bones include metals such as stainless steel, cobalt-chromium alloys, titanium or titanium alloys, synthetic resins such as high-density polyethylene, and various ceramics, depending on the functionality required by the replacement part. However, metals are used in areas where particularly high performance is required in terms of strength.
例えば、人工股関節における人工骨頭１は、第３図に示
すように、摺動部を形成するボール部２と大腿骨髄内に
挿入されるステム部３とからなるなるものであるが、こ
のような人工骨頭１において、摺動面を形成するボール
部２は、最近、金属製のものからより耐摩耗性に優れ、
たセラミックス製のものが多く臨床に応用されるように
なっているが、大腿骨髄内に挿入され人工骨頭１構造を
支持するステム部３は、剛性、靭性などの強度的要件が
強く求められる部位であるために、従前として、金属か
ら構成される必要がある。For example, as shown in FIG. 3, an artificial head 1 in an artificial hip joint is composed of a ball part 2 forming a sliding part and a stem part 3 inserted into the femoral bone marrow. In the artificial femoral head 1, the ball part 2 forming the sliding surface has recently been made of metal, which has better wear resistance.
However, the stem part 3, which is inserted into the femoral bone marrow and supports the structure of the artificial femoral head 1, is a part where strong requirements such as rigidity and toughness are required. Therefore, it has traditionally been necessary to be made of metal.
ところで、従来、人工骨においてこのように金属で構成
される部位（ステム部３）は、第４ａ〜Ｃ図に示す断面
図におけるように緻密な中実体とされるために、強度的
には十分なものであるが、必然的に重くなる。このため
生体内に埋入使用された場合に、患者に対する負担は大
きく常に異物感を与え、また円滑な機能動作を阻害する
虞れの残るものであった。By the way, conventionally, the part (stem part 3) made of metal in the artificial bone is made into a dense solid body as shown in the cross-sectional views shown in FIGS. However, it inevitably becomes heavier. For this reason, when implanted in a living body, the burden placed on the patient is large and always gives a feeling of a foreign body, and there remains the possibility that smooth functional operation may be inhibited.
さらにこのような問題を改善するなめに、金属で構成さ
れる部位を′薄肉なものとしたり、あるいは州＜シなり
したものも提唱されているが、このような方法による軽
量化は人工骨の構造強度を低下させるものであり、好ま
しいものとは言えないものであった。Furthermore, in order to improve this problem, it has been proposed to make the parts made of metal thinner, or to make them thinner, but weight reduction by such methods is not suitable for artificial bones. This lowered the structural strength and could not be said to be desirable.
（発明が解決しようとする問題点）
従って、本発明は改良された人工骨を提供することを目
的とする。本発明はまた、軽量で患者に対する負担の少
ない人工骨を提供することを目的とする。本発明はさら
に、十分な強度を有する軽量な人工骨を提供することを
目的とするものである。(Problems to be Solved by the Invention) Therefore, an object of the present invention is to provide an improved artificial bone. Another object of the present invention is to provide an artificial bone that is lightweight and places less burden on the patient. A further object of the present invention is to provide a lightweight artificial bone having sufficient strength.
（問題点を解決するための手段）
上記諸口的は、生体内に埋入される人工骨において、そ
の内部が中空とされていることを特徴とする人工骨によ
り達成される。(Means for Solving the Problems) The above-mentioned advantages are achieved by an artificial bone implanted in a living body, which is characterized by having a hollow interior.
（作用）
しかして、本発明の人工骨は、その内部を中空としたこ
とを特徴とするものであって、人工骨が金属より構成さ
れる場合であっても、極めて軽量であり、患者に対する
負担が少なくなるものである。さらに、このような軽量
化は中空形状とすることによりなされるために、人工骨
の強度低下は低く抑えられ、実用上何ら問題のないもの
であって、高強度で軽量な人工骨となるものである。(Function) Therefore, the artificial bone of the present invention is characterized by having a hollow interior, and even when the artificial bone is made of metal, it is extremely lightweight, and is comfortable for patients. This will reduce the burden. Furthermore, since such weight reduction is achieved by creating a hollow shape, the decrease in the strength of the artificial bone is kept low, and there is no problem in practical use, resulting in a high-strength, lightweight artificial bone. It is.
以下、本発明を実施態様に基づきより詳細に説明する。Hereinafter, the present invention will be explained in more detail based on embodiments.
第１図は本発明の人工骨の一実施悪様である人工股関節
の人工骨頭を示す正面図であり、また第２ａ〜Ｃ図はそ
れぞれ第１図に示す実施態様のａ−ａ線、ｂ−ｂ線、ｃ
−ｃ線断面図である。FIG. 1 is a front view showing the artificial head of an artificial hip joint which is one embodiment of the artificial bone of the present invention, and FIGS. 2a to 2C are lines aa and b of the embodiment shown in FIG. 1, respectively. -b line, c
-c line sectional view.
第１図に示す実施態様における人工骨頭１は、摺動部を
形成するボール部２と大腿骨髄内に挿入されるステム部
３とからなるものである。The artificial femoral head 1 in the embodiment shown in FIG. 1 consists of a ball part 2 forming a sliding part and a stem part 3 inserted into the femoral bone marrow.
しかして本実施悪様の人工骨頭１においては、大腿骨髄
内に挿入され人工骨頭１構造を支持するステム部３は、
第２ａ−ｃ図に示すように内部が中空なものとして形成
されている。なお本発明の人工骨は、その内部が中空と
されていることを特徴とするものであるが、第１図およ
び第２ａ〜Ｃ図に示す実施態様におけるように、人工骨
の一部（ステム部３）のみを中空とするような態様も本
発明の範囲内に含まれるものである。もちろん、人工骨
の全体を通じて中空構造を有するような態様も本発明の
範囲内に含まれる。また、このような中空とされた内部
は、完全な閉塞空間とすることも可能であるが、インブ
ラント材料としての安全性の面から、該中空とされた内
部空間は、その一部において開放され外部と連通ずる空
間とされることが望ましい。すなわち、仮に閉塞空間を
構成した場合、該閉塞空間に封入された空気などの気体
が、何らかの原因で漏洩すると生体に対して好ましくな
い結果を与える虞れがあるなめである。However, in the artificial femoral head 1 which is poorly implemented, the stem portion 3 which is inserted into the femoral bone marrow and supports the structure of the artificial femoral head 1 is as follows:
As shown in FIGS. 2a to 2c, the interior is hollow. The artificial bone of the present invention is characterized by having a hollow interior, but as in the embodiments shown in FIGS. 1 and 2a to 2C, a part of the artificial bone (stem An embodiment in which only part 3) is hollow is also included within the scope of the present invention. Of course, embodiments in which the artificial bone has a hollow structure throughout are also included within the scope of the present invention. In addition, it is possible to make such a hollow interior a completely closed space, but from the standpoint of safety as an implant material, the hollow interior space may be partially open. It is desirable to have a space that communicates with the outside. That is, if a closed space is formed, if gas such as air sealed in the closed space leaks for some reason, there is a possibility that unfavorable results may be caused to the living body.
さらに、このよう、に内部が中空なものとして形成され
たこのステム部３は、第２ａ〜Ｃ図に示されるように、
その断面形状が略円形とされている。Furthermore, this stem portion 3, which is formed to have a hollow interior, as shown in FIGS. 2a to 2C,
Its cross-sectional shape is approximately circular.
このように本発明の人工骨において、中空部位の断面形
状を略円形なものとすると人工骨の構造強度がより良好
なものとなり、人工骨の軸方向に対して横方向からの荷
重にも十分に耐え得るものとなるために特に望ましいも
のである。In this way, in the artificial bone of the present invention, if the cross-sectional shape of the hollow part is made approximately circular, the structural strength of the artificial bone will be better, and it will be sufficient to withstand loads from the lateral direction with respect to the axial direction of the artificial bone. This is particularly desirable because it can withstand
このように中空構造を有する本発明の人工骨は、人工骨
の用途および機能に応じて、金属、合成樹脂、あるいは
セラミックスなどの各種の材質により構成され得るが、
特に第１図および第２ａ〜Ｃ図に示される人工骨頭１の
ステム部３におけるように、剛性、靭性などの強度的要
件が強く求められ、金属から構成される必要がある態様
において、顕著な軽量性という効果をもたらすものであ
る。The artificial bone of the present invention having a hollow structure as described above can be made of various materials such as metal, synthetic resin, or ceramics depending on the purpose and function of the artificial bone.
Particularly, as in the case of the stem portion 3 of the artificial head 1 shown in Fig. 1 and Figs. This brings about the effect of being lightweight.
例えば、第１図および第２ａ〜Ｃ図に示される人工骨頭
１のステム部３は、５ＬＩＳ３１６，５ＵＳ３１６Ｌ、
５ｔＪＳ３１７などのステンレス鋼、またはチタンない
しはＴｉ−６ＡＩ−４Ｖなどのチタン合金などにより好
ましく構成され得るが、このような金属から第２ａ〜Ｃ
図に示すようにその内部を中空なものとして成形するに
は、例えば、鋳造、鍛造、粉末焼結などの方法によりな
され得る。これらの成形方法のうち、内部を中空とされ
る人工骨が第１図に示すように、かなり複雑な形状を有
することから、特に、適当な中子を用いて粉末焼結によ
り成形することが最も容易な方法であると考えられる。For example, the stem portion 3 of the artificial femoral head 1 shown in FIG. 1 and FIGS. 2a to 2C is 5LIS316, 5US316L,
It is preferably made of stainless steel such as 5tJS317, or titanium or a titanium alloy such as Ti-6AI-4V.
As shown in the figure, the inside can be formed to be hollow by methods such as casting, forging, and powder sintering. Among these molding methods, since the hollow artificial bone has a fairly complex shape as shown in Figure 1, it is particularly difficult to mold it by powder sintering using an appropriate core. This is considered to be the easiest method.
なお、本実施悪様の人工骨頭１において、このような中
空とされた内部を有するステム部３の上端部に取付けら
れたボール部２は、従来の人工骨頭１におけるものと同
様に、上記のごときステンレス鋼、チタンないしチタン
合金あるいはアルミナ系セラミックスなどのセラミック
ス等により構成され得る。In addition, in the artificial femoral head 1 according to the present implementation, the ball part 2 attached to the upper end of the stem part 3 having such a hollow interior is similar to the one in the conventional artificial femoral head 1, as described above. It may be made of stainless steel such as stainless steel, titanium or titanium alloy, or ceramics such as alumina ceramics.
このような構成を有する本発明の人工骨は、従来の人工
骨と同様にして生体内に埋入され使用されるものである
。すなわち、第１図に示す人工骨頭１を例にとると、ま
ず大腿骨髄腔のリーミングを行ない、形成された装填孔
に、必要に応じてボーンセメントを注入後、上記人工骨
頭１を打込み装填し整復する。整復後は、サクションド
レインを挿入し、各層を縫合して装填手術を完了する。The artificial bone of the present invention having such a configuration is implanted and used in a living body in the same manner as conventional artificial bones. Specifically, taking the artificial femoral head 1 shown in FIG. 1 as an example, the femoral medullary canal is first reamed, bone cement is injected into the formed loading hole as needed, and then the artificial femoral head 1 is driven and loaded. Reduce. After reduction, a suction drain is inserted and each layer is sutured to complete the loading surgery.
以上は、本発明の人工骨を、人工股関節における人工骨
頭の場合を例にとり説明したが、本発明の人工骨は、こ
のような人工骨頭に何ら限定されるものではなく、各種
の人工骨、特に金属材料により構成される人工骨におけ
る態様を有するものであり、上記した人工股関節以外に
も、例えば、膝関節、指関節、肩関節、足労、腕骨、そ
の他の人体を構成する代替用人工骨などが好ましい例と
して挙げられる。The artificial bone of the present invention has been described above using the case of an artificial femoral head in an artificial hip joint as an example, but the artificial bone of the present invention is not limited to such an artificial femoral head in any way, but can be applied to various types of artificial bones, In particular, it is used as an artificial bone made of metal materials, and in addition to the above-mentioned artificial hip joints, it can also be used as a replacement artificial bone for knee joints, finger joints, shoulder joints, leg joints, arm bones, and other parts of the human body. etc. are mentioned as preferable examples.
（実施例） 以下、本発明を実施例によりさらに具体的に説明する。(Example) Hereinafter, the present invention will be explained in more detail with reference to Examples.
実施例および比較例
第１図および第２ａ〜Ｃ図に示すような形状を有する人
工骨頭１のステム部３を粉末焼結により作製しな。すな
わち、約２００メツシユのチタン粉末を用い、また内部
に中空な部位を形成するために、金型内にアルミナ製中
子を配して、５ｔ。EXAMPLES AND COMPARATIVE EXAMPLES The stem portion 3 of the artificial femoral head 1 having the shape shown in FIGS. 1 and 2A to 2C was manufactured by powder sintering. That is, about 200 meshes of titanium powder were used, and an alumina core was placed in the mold to form a hollow part, and the total weight was 5 tons.
ｎ７ｃｍ２で加圧成形し、成形密度約３．．３ｇ／Ｃｍ
３の成形物を得、これを１Ｏ−５Ｔｏｒｒ下で、２００
℃にて２時間焼成し、アルミナ製中子を除去して、内部
を中空としたステム部３を密度４゜３ｇ／ｃｍ３の焼結
体として得た。Pressure molded at n7cm2, molding density approximately 3. ．． 3g/cm
A molded product of No. 3 was obtained, and this was heated under 1O-5 Torr at 200
C. for 2 hours, and the alumina core was removed to obtain a hollow stem portion 3 as a sintered body having a density of 4.3 g/cm.sup.3.
一方、比較のなめに、アルミナ製中子を用いず、内部を
中空としない以外は実施例と同様にして、成形焼結して
、ステム部を作製した。On the other hand, for comparison, a stem portion was produced by molding and sintering in the same manner as in the example except that the alumina core was not used and the inside was not hollow.
このようにして得られた両者を、その重量および各部位
における曲げ強度によって比較したところ、中実体であ
る比較例のステム部に対して、中空体である実施例のス
テム部は、その重量において約１／２程度しかなく非常
に軽量であるにもかかわらず、各部における曲げ強度は
実質的に比較例のものと何ら遜色のないものであり、非
常に優れた人工骨であることが確認された。When the two thus obtained were compared in terms of their weight and bending strength at each part, it was found that the stem of the example, which is a hollow body, was lower in weight than the stem of the comparative example, which was a solid body. Although it is extremely lightweight, weighing only about 1/2, the bending strength of each part is virtually the same as that of the comparative example, confirming that it is an extremely superior artificial bone. Ta.
（発明の効果）
以上述べたように、本発明の人工骨はその内部が中空と
されていることを特徴とするものであるから、極めて軽
量であり、該人工骨を体内に装填された患者に対する負
担が少なくなるものである。(Effects of the Invention) As described above, the artificial bone of the present invention is characterized by being hollow inside, so it is extremely lightweight, and the patient who has the artificial bone loaded into the body This reduces the burden on people.
さらに、このような軽量化は中空形状とすることにより
なされるために、人工骨の強度低下は低く抑えられ、実
用上何ら問題のないものであって、従来の人工骨に代わ
り使用されて良好な結果を生じることが期待されるもの
である。Furthermore, since such weight reduction is achieved by making the artificial bone hollow, the decrease in strength of the artificial bone is kept low, and there is no problem in practical use, and it can be used in place of conventional artificial bones. It is expected that this will produce good results.
第１図は本発明の人工骨の一実施態様を示す正面図、第
２ａ−ｃ図はそれぞれ第１図におけるａ−ａ線、ｂ−ｂ
線、ｃ−ｃ線断面図、第３図は従来の人工骨の例を示す
正面図であり、また第４ａ〜Ｃ図はそれぞれ第３図にお
けるａ−ａ線、ｂ−ｂ線、ｃ−ｃ線断面図である。
１・・・人工骨頭、２・・・ボール部、３・・・ステム
部。
第４ｄ因
第４ｂＮ
第４０因
○FIG. 1 is a front view showing one embodiment of the artificial bone of the present invention, and FIGS. 2a-c are lines a-a and bb-b in FIG. 1, respectively.
3 is a front view showing an example of a conventional artificial bone, and FIG. It is a sectional view taken along the c line. 1... Artificial bone head, 2... Ball part, 3... Stem part. 4th factor 4bN 40th factor ○
Claims (5)
中空とされていることを特徴とする人工骨。(1) An artificial bone to be implanted in a living body, which is characterized by having a hollow interior.
のである特許請求の範囲第１項に記載の人工骨。(2) The artificial bone according to claim 1, wherein the hollow portion has a substantially circular cross-sectional shape.
ものである特許請求の範囲第１項または第２項に記載の
人工骨。(3) The artificial bone according to claim 1 or 2, wherein the artificial bone is made of titanium or a titanium alloy.
である特許請求の範囲第１項または第２項に記載の人工
骨。(4) The artificial bone according to claim 1 or 2, wherein the artificial bone is made of stainless steel.
求の範囲第１項〜第４鋼のいずれかに記載の人工骨。(5) The artificial bone according to any one of claims 1 to 4, which constitutes a stem portion of an artificial joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62308986A JPH01148254A (en) | 1987-12-07 | 1987-12-07 | Artificial bone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62308986A JPH01148254A (en) | 1987-12-07 | 1987-12-07 | Artificial bone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01148254A true JPH01148254A (en) | 1989-06-09 |
Family
ID=17987574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62308986A Pending JPH01148254A (en) | 1987-12-07 | 1987-12-07 | Artificial bone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01148254A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0545718A2 (en) * | 1991-12-03 | 1993-06-09 | JANOME SEWING MACHINE Co., Ltd. | Method of making bone-implants |
| US5607480A (en) * | 1993-11-10 | 1997-03-04 | Implant Innovations, Inc. | Surgically implantable prosthetic devices |
| US6491723B1 (en) | 1996-02-27 | 2002-12-10 | Implant Innovations, Inc. | Implant surface preparation method |
| US6652765B1 (en) | 1994-11-30 | 2003-11-25 | Implant Innovations, Inc. | Implant surface preparation |
| JP2009513291A (en) * | 2005-11-01 | 2009-04-02 | サンドビック メディカル ソリューションズ リミティド | Medical prosthetic implant casting |
| US7850452B2 (en) | 2005-04-27 | 2010-12-14 | Biomet 3I, Llc | Pre-stressed implant component and assembly |
| US10227697B2 (en) | 2003-05-16 | 2019-03-12 | Biomet 3I, Llc | Surface treatment process for implants made of titanium alloy |
-
1987
- 1987-12-07 JP JP62308986A patent/JPH01148254A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0545718A2 (en) * | 1991-12-03 | 1993-06-09 | JANOME SEWING MACHINE Co., Ltd. | Method of making bone-implants |
| EP0545718A3 (en) * | 1991-12-03 | 1993-10-13 | Janome Sewing Machine Co., Ltd. | Method of making bone-implants |
| US5607480A (en) * | 1993-11-10 | 1997-03-04 | Implant Innovations, Inc. | Surgically implantable prosthetic devices |
| US5816811A (en) * | 1993-11-10 | 1998-10-06 | Implant Innovations, Inc. | Surgically implantable prosthetic devices |
| US6652765B1 (en) | 1994-11-30 | 2003-11-25 | Implant Innovations, Inc. | Implant surface preparation |
| US6491723B1 (en) | 1996-02-27 | 2002-12-10 | Implant Innovations, Inc. | Implant surface preparation method |
| US10227697B2 (en) | 2003-05-16 | 2019-03-12 | Biomet 3I, Llc | Surface treatment process for implants made of titanium alloy |
| US7850452B2 (en) | 2005-04-27 | 2010-12-14 | Biomet 3I, Llc | Pre-stressed implant component and assembly |
| JP2009513291A (en) * | 2005-11-01 | 2009-04-02 | サンドビック メディカル ソリューションズ リミティド | Medical prosthetic implant casting |
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