JP2001518319A - 関節の体内補綴用ソケット - Google Patents
関節の体内補綴用ソケットInfo
- Publication number
- JP2001518319A JP2001518319A JP2000503795A JP2000503795A JP2001518319A JP 2001518319 A JP2001518319 A JP 2001518319A JP 2000503795 A JP2000503795 A JP 2000503795A JP 2000503795 A JP2000503795 A JP 2000503795A JP 2001518319 A JP2001518319 A JP 2001518319A
- Authority
- JP
- Japan
- Prior art keywords
- socket
- spherical segment
- radius
- segment surface
- spherical
- 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.)
- Granted
Links
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
- A61F2/34—Acetabular cups
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30317—The prosthesis having different structural features at different locations within the same prosthesis
- A61F2002/30322—The prosthesis having different structural features at different locations within the same prosthesis differing in surface structures
-
- 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
- A61F2/34—Acetabular cups
- A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
-
- 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
- A61F2/34—Acetabular cups
- A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
- A61F2002/3403—Polar aperture
-
- 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
- A61F2/34—Acetabular cups
- A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
- A61F2002/3406—Oblong apertures
-
- 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
- A61F2/34—Acetabular cups
- A61F2002/3412—Acetabular cups with pins or protrusions, e.g. non-sharp pins or protrusions projecting from a shell surface
- A61F2002/3417—Acetabular cups with pins or protrusions, e.g. non-sharp pins or protrusions projecting from a shell surface the outer shell having protrusions on meridian lines, e.g. equidistant fins or wings around the equatorial zone
-
- 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
- A61F2/34—Acetabular cups
- A61F2002/345—Acetabular cups the inner and outer (hemi)spherical surfaces of a shell, e.g. an intermediate shell, having distinct centres of rotation, both located on the centre line of the shell
-
- 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
- A61F2/34—Acetabular cups
- A61F2002/3453—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped
- A61F2002/3456—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped ellipsoidal or having a flattened polar region
-
- 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
- A61F2/34—Acetabular cups
- A61F2002/3453—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped
- A61F2002/3459—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped made of different partially-spherical portions
-
- 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
- A61F2/34—Acetabular cups
- A61F2002/3453—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped
- A61F2002/3462—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped having a frustoconical external shape, e.g. entirely frustoconical
-
- 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
- A61F2/34—Acetabular cups
- A61F2002/3453—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped
- A61F2002/3466—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped having a cylindrical external shape, e.g. entirely cylindrical
-
- 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
- A61F2/34—Acetabular cups
- A61F2002/348—Additional features
- A61F2002/3482—Two hemispherical halves having completely different structures
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
- A61F2250/0026—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in surface structures
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00011—Metals or alloys
- A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
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)
- Stringed Musical Instruments (AREA)
- Dowels (AREA)
- Golf Clubs (AREA)
Abstract
Description
内補綴用金属ソケットに関する。一般に知られているのはこのようなソケットで
あり、ポリエチレンやセラミック又はそれらと同様に人間に適合性のある材料で
作られた所謂インレーをサポートするのに用いられる。この種のソケットは、し
ばしば人工股関節の構成部分として用いられる。一般に、このようなソケットは
、チタニウムやチタニウム合金製である。セメントを用いずにこれを体内に移植
する場合は、ソケットの穴部に対する骨の接着や成長を促進するためにその表面
を荒くしておくか多孔にしておくのが有利である。
でなく平坦状に形成された半球状のソケットが開示されている。 また、PCT特許公開第94/23670号には、股関節用ソケットの外表面
が楕円領域からなるものが提案されている。
ットの保持を改善する目的で提案されたものである。しかし、試験をしてみたと
ころこの目的はヨーロッパ特許0380055B1による結合構造では十分に達
成されないことがわかった。従って、この公知の構造の目的は、生来のソケット
座中の骨が負荷の下に置かれたときソケットの極表面にかかる圧力が該ソケット
をその位置から押し出さないように、生来のソケット座の表面から極表面をずら
す程度をやや増すに過ぎない。極表面のこの後退は、骨に大きな負荷がかかると
きでさえ該極表面と骨の間が確実に接触しないようにするものである。この場合
には、生来のソケット座にソケットを保持できるのはもっぱらソケットの赤道領
域での圧接によっている。しかし、その場合の保持は不充分にしか行われないこ
とが多い。上記PCT特許公開第94/23670号の中で、股関節ソケットの
外表面を楕円形状に形成する提案がなされているのは、まさにこの問題に対する
ものである。一つの対策は、上記の利点を保持しつつ該極表面を更に骨から分離
させることである。また、別の対策は、ソケットが生来のソケット座に圧接され
る際の外表面を増やすことである。しかし、このやり方では、三次元形状の製造
工程が複雑となるため楕円形状を形成することは非常にコストがかかる不利があ
る。
にPCT特許公開第94/23670号による構造より製造が容易に行えるソケ
ットを創造することである。 この目的は、各半径が異なる少なくとも三つの球形セグメント表面で特定され
るようにソケットの外表面を形成する本発明により達成される。球形セグメント
の表面は楕円状の表面に比べ、その回転対称の故に製造がかなり容易にできる。
また、本発明による構造の取付特性は、楕円状の表面領域を持つ構造と略同じ利
点を有する。
ソケット表面の隣接領域の変わり目が急になることは減り、その結果このような
変わり目によって引き起こされる骨中の応力ピークはそれに応じて減少される。
この応力ピークはソケットが骨中に取り付けられる際の安定性に悪い影響を及ぼ
すので、それが避けられ従って急な表面の変わり目を避けることが重要となる。
これは、本発明によって達成されるものである。
求項2には製造技術に関して特にシンプルな実施例が記載されている。この実施
例によれば、複数の球形セグメント表面の中心は各々共通な回転軸上にある。
セグメントの中心を、極近くの表面、特に極表面自身を形成する球形セグメント
の中心よりソケットの極に近づける。 生来のソケット座に回転しないようにソケットを固定するために、赤道球形セ
グメント表面に極方向に向いたリブないしは同様の隆起物を設けるのが便宜であ
る。
置き換えることも考えられる。この実施例は、主として生来のソケット座が外周
領域に特別に形成される必要があるとき有利となる。その際、必要となるのはこ
の領域に相補的な円錐座面をミルカットすることだけである。
坦化することも考えられる。
にずらして、ソケットないしはソケットの外表面がその各々の回転軸方向に伸び
るようにすることも考えられる。この実施例は特にソケットの再生に適する。
しかし、どの場合にも共通して重要なことは、ソケットの外表面が異なる半径の
少なくとも三つの球形セグメント表面によって形成されることである。
して詳細に説明される。
メント表面12,13,14によって形成される凸状の外表面を持つソケット1
0を示している。三つの該球形セグメント表面12,13,14は共通の回転軸
15を有している。各々の球形セグメント表面14,12,13の中心Z1,Z
2,Z3は、回転軸15上にある。その対応する半径R1、R2,R3の内で、
中間の球形セグメント表面13の半径R3は極の球形セグメント表面12の半径
R2より小さいが、赤道付近の球形セグメント表面14の半径R1より大きい。
この形状及び球半径の選択の結果として、ソケット10の極領域の表面は図1で
半円弧16によって示される単純な半球形セルの表面と比べてより平坦になる。
ント表面14と極球形セグメント表面12の各々の幅は、それらに挟まれた中間
に位置する球形セグメント表面13の幅より狭い。特に、この実施例では赤道球
形セグメント表面14と極球形セグメント表面12の各々の幅は中間に位置する
球形セグメント表面13の幅の略半分である。それにより、生来のソケット座へ
のソケット10の接合がより確実に行われる。従って、ソケットの着座が次第に
より確実に行われるようになることでソケット上への骨の成長が促進される。
られたリブ17が設けられる点が特徴となっている。リブ17は円周上に均一に
配置され、生来のソケット座中でのソケットの回転の安定性を増している。また
、リブ17は生来のソケット座中での圧接の安定性を増すことにも役立つ。
い。この場合にも、その表面上にリブ又は同様の隆起物を極方向に設けることが
できる。
の極をより平坦にすることもできる。図2による実施例では、ソケット壁を貫通
する穴18が骨ネジを受領するために極に設けられる。極球形セグメント表面及
び中間球形セグメント表面の間の変わり目領域には、更に穴19が形成される。
必要に応じて、骨ネジを受領する穴19が二個、互いから所定の角距離を保持し
て設けられてもよい。穴18,19は、また骨ネジが孔によって形成される限界
内でその適切な場所を選択することができるように細長い孔形状に形成されても
よい。このことは、特に中間領域に配置される開口部に適用される。また、これ
らが細長い孔で形成されるときは、長手方向に伸びるように形成するのが好まし
い。この場合には、赤道球形セグメント表面14を周囲に亘る円筒形状面と取り
替えてもよい。
合わせにおいて新規である限りにおいて、本発明に本質的なものとして請求項さ
れる。
謂三半径ソケットの側面図を示している。
図である。
Claims (10)
- 【請求項1】球形表面の外表面が、各々異なる半径(R1,R2,R3)を有
し円周方向に伸びる少なくとも三つの表面(12,13,14)からなることを
特徴とする関節の体内補綴用金属ソケット。 - 【請求項2】上記球形セグメント表面(12,13,14)の中心(Z1,Z
2,Z3)が、共通の回転軸(15)上にあることを特徴とする請求項1に記載
のソケット。 - 【請求項3】周囲又は赤道球形セグメント表面(14)の中心(Z1)は、ソ
ケット(10)の極に対し極球形セグメント表面(12)の中心(Z2)より近
くにあることを特徴とする請求項1又は2に記載のソケット。 - 【請求項4】上記赤道球形セグメント表面(14)は、上記極方向に向けられ
たリブ(17)または同様の隆起物を有することを特徴とする請求項1〜3の何
れか1項に記載のソケット。 - 【請求項5】上記赤道球形セグメント表面(14)は、周囲に亘る円錐面によ
って置き換えられることを特徴とする請求項1〜3の何れか1項に記載のソケッ
ト。 - 【請求項6】上記円錐表面は、上記極方向に向けられたリブ又は同様の隆起物
を有することを特徴とする請求項5に記載のソケット。 - 【請求項7】上記赤道球形セグメント表面(14)及び上記極球形セグメント
表面(12)の各々の幅は、それらの間に挟まれて中間に位置する球形セグメン
ト表面(13)の幅より狭く、略半分の幅であることを特徴とする請求項1〜6
の何れか1項に記載のソケット。 - 【請求項8】上記ソケット(10)の極は、上記回転軸(15)に対し垂直に
伸びる面によって平坦化されていることを特徴とする請求項1〜7の何れか1項
に記載のソケット。 - 【請求項9】個々の球形セグメント表面(12,13,14)の回転軸は、各
々の表面に垂直な方向に互いに配置され、その方向又はソケットの外表面(11
)方向に伸びるソケットを形成することを特徴とする請求項1及び請求項3〜8
の何れか1項に記載のソケット。 - 【請求項10】中間の球形セグメント表面(13)の半径(R3)は極の球形
セグメント表面(12)の半径(R2)より小さいが、赤道付近の球形セグメン
ト表面(14)の半径(R1)より大きいことを特徴とする請求項1〜9の何れ
か1項に記載のソケット。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19731442.2 | 1997-07-22 | ||
DE19731442A DE19731442A1 (de) | 1997-07-22 | 1997-07-22 | Pfanne für eine Gelenkendoprothese |
PCT/EP1998/004528 WO1999004732A1 (de) | 1997-07-22 | 1998-07-20 | Pfanne für eine gelenkendoprothese |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2001518319A true JP2001518319A (ja) | 2001-10-16 |
JP4266513B2 JP4266513B2 (ja) | 2009-05-20 |
Family
ID=7836514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000503795A Expired - Lifetime JP4266513B2 (ja) | 1997-07-22 | 1998-07-20 | 関節の体内補綴用ソケット |
Country Status (8)
Country | Link |
---|---|
US (1) | US6325829B1 (ja) |
EP (1) | EP0998245B1 (ja) |
JP (1) | JP4266513B2 (ja) |
AT (1) | ATE229776T1 (ja) |
DE (2) | DE19731442A1 (ja) |
DK (1) | DK0998245T3 (ja) |
ES (1) | ES2189226T3 (ja) |
WO (1) | WO1999004732A1 (ja) |
Cited By (1)
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JP2018038906A (ja) * | 2009-02-04 | 2018-03-15 | ティージェイ スミス アンド ネフュー リミテッド | レセプタクル |
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-
1997
- 1997-07-22 DE DE19731442A patent/DE19731442A1/de not_active Withdrawn
-
1998
- 1998-07-20 EP EP98941383A patent/EP0998245B1/de not_active Expired - Lifetime
- 1998-07-20 JP JP2000503795A patent/JP4266513B2/ja not_active Expired - Lifetime
- 1998-07-20 US US09/463,476 patent/US6325829B1/en not_active Expired - Lifetime
- 1998-07-20 WO PCT/EP1998/004528 patent/WO1999004732A1/de active IP Right Grant
- 1998-07-20 DE DE59806747T patent/DE59806747D1/de not_active Expired - Lifetime
- 1998-07-20 ES ES98941383T patent/ES2189226T3/es not_active Expired - Lifetime
- 1998-07-20 DK DK98941383T patent/DK0998245T3/da active
- 1998-07-20 AT AT98941383T patent/ATE229776T1/de active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018038906A (ja) * | 2009-02-04 | 2018-03-15 | ティージェイ スミス アンド ネフュー リミテッド | レセプタクル |
Also Published As
Publication number | Publication date |
---|---|
US6325829B1 (en) | 2001-12-04 |
DK0998245T3 (da) | 2003-03-31 |
DE19731442A1 (de) | 1999-02-11 |
ATE229776T1 (de) | 2003-01-15 |
ES2189226T3 (es) | 2003-07-01 |
WO1999004732A1 (de) | 1999-02-04 |
EP0998245B1 (de) | 2002-12-18 |
EP0998245A1 (de) | 2000-05-10 |
DE59806747D1 (de) | 2003-01-30 |
JP4266513B2 (ja) | 2009-05-20 |
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