JPH11169392A - プロテーゼ組立体 - Google Patents
プロテーゼ組立体Info
- Publication number
- JPH11169392A JPH11169392A JP10242598A JP24259898A JPH11169392A JP H11169392 A JPH11169392 A JP H11169392A JP 10242598 A JP10242598 A JP 10242598A JP 24259898 A JP24259898 A JP 24259898A JP H11169392 A JPH11169392 A JP H11169392A
- Authority
- JP
- Japan
- Prior art keywords
- insert
- shell
- cup
- prosthesis assembly
- rim
- 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
- 210000000988 bone and bone Anatomy 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 claims 1
- 239000000919 ceramic Substances 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract 2
- 231100001261 hazardous Toxicity 0.000 abstract 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 14
- 229910010293 ceramic material Inorganic materials 0.000 description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 210000000588 acetabulum Anatomy 0.000 description 3
- 210000001624 hip Anatomy 0.000 description 3
- 210000004394 hip joint Anatomy 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229910000684 Cobalt-chrome Inorganic materials 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical compound [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 description 2
- 239000010952 cobalt-chrome Substances 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 238000011540 hip replacement Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 210000000689 upper leg Anatomy 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
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- 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
- 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 or setting implements
- 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
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- 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
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- A61F2/4684—Trial or dummy prostheses
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- 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
- A61F2002/30108—Shapes
- A61F2002/3011—Cross-sections or two-dimensional shapes
- A61F2002/30112—Rounded shapes, e.g. with rounded corners
- A61F2002/30125—Rounded shapes, e.g. with rounded corners elliptical or oval
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- 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
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- 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
- A61F2002/30324—The prosthesis having different structural features at different locations within the same prosthesis differing in thickness
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- 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
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
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- 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
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- 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
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30593—Special structural features of bone or joint prostheses not otherwise provided for hollow
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- 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
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
- A61F2002/30784—Plurality of holes
- A61F2002/30787—Plurality of holes inclined obliquely with respect to each other
-
- 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
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
- A61F2002/3079—Stepped or enlarged apertures, e.g. having discrete diameter changes
-
- A—HUMAN NECESSITIES
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- 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
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30904—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves serrated profile, i.e. saw-toothed
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- 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
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- 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
- A61F2/3094—Designing or manufacturing processes
- A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
- A61F2002/30955—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using finite-element analysis
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- A—HUMAN NECESSITIES
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- 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
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- A61F2/02—Prostheses implantable into the body
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- A61F2/02—Prostheses implantable into the body
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- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
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-
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- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0004—Rounded shapes, e.g. with rounded corners
- A61F2230/0008—Rounded shapes, e.g. with rounded corners elliptical or oval
-
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- 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
- A61F2250/0036—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 thickness
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- 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
- A61F2310/00029—Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium
-
- 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
- A61F2310/00179—Ceramics or ceramic-like structures
- A61F2310/00185—Ceramics or ceramic-like structures based on metal oxides
- A61F2310/00203—Ceramics or ceramic-like structures based on metal oxides containing alumina or aluminium oxide
-
- 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
- A61F2310/00179—Ceramics or ceramic-like structures
- A61F2310/00185—Ceramics or ceramic-like structures based on metal oxides
- A61F2310/00239—Ceramics or ceramic-like structures based on metal oxides containing zirconia or zirconium oxide ZrO2
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)
- Materials For Medical Uses (AREA)
Abstract
質からなるカップ状挿入体を含むプロテーゼ組立体を提
供する。 【解決手段】 股臼シェル2の形状をなす固定要素と、
ベアリングカップ部4からなるプロテーゼ組立体。ベア
リングカップ部4は、拡大部10がある縁8を有するの
で、ベアリング面での動きの範囲が増し、位置のずれの
危険が減少する。縁8の拡大部10はカップ部挿入体4
からシェル2の平らな縁2の上をほぼ放射状に延びる。
拡大縁部10の強度が増強されているので、拡大縁部1
0が破裂する危険なく挿入体4はセラミック物質から形
成できる。
Description
体、特に、患者の股臼に挿入するシェルと股関節に対す
るベアリング面を形成する挿入体に関する。
トを用いてシェル部を患者の股臼に取り付ける股関節プ
ロテーゼ又は、ネジ止具によって又はネジ止具なしで直
接骨にシェル部を患者の股臼に接着する股関節プロテー
ゼが知られている。一般にカップ状の挿入体をシェル内
に配置する。カップの内面が大腿部頭に対してベアリン
グ面となる。
は、カップ形状から上方向に挿入体の縁が延びて形成さ
れる延びたベアリング面を有する挿入体が開示されてい
る。この文献に示される挿入体は金属又はポリエチレン
物質からなる。破裂強度が低いので非常に脆いが耐久性
と生物学的適合性が他の物質より良好であるのでカップ
状挿入体をセラミックスで形成することが好ましい。セ
ラミックス物質が脆いということは、セラミックス物質
からなるカップ状挿入体では、シェルにより支持されな
いカップの部分が破裂しやすいので、延びたベアリング
面を有することはできないことを意味する。
ベアリング面を有するセラミックス物質からなるカップ
状挿入体を含むプロテーゼ組立体を提供することであ
る。本発明は、患者の骨に取り付けるための固定要素
と、縁のあるベアリングカップ部とからなり、縁の一部
は拡大していて、拡大部はカップ部からほぼ放射方向に
延びる肩の形であり、縁の一部の幅が増しているプロテ
ーゼ組立体を提供する。
ら作られている。セラミック物質はアルミナまたはジル
コニアでよい。好ましくは、固定要素は合成プラスチッ
ク物質又は金属で作られている。好ましくは、固定要素
とベアリングカップ部の間にテーパ接触がある。ベアリ
ングカップ部は、雄部を形成するようにテーパされてい
る外面を有し、固定要素は、ベアリングカップ部の雄部
と対応する雌部を形成するようにテーパされている内面
を有してもよい。
質的に楕円である。好ましくは、カップ部のベアリング
内面はカップ部の楕円内で中心からずれている。好まし
くは、プロテーゼ組立体は股臼カップ組立体である。
実施例について図面を参照して説明する。図に示すよう
に、プロテーゼ組立体1は、シェル2の形状をなす固定
要素と、挿入体4の形状をなすベアリングカップ部から
なる。シェル2は、患者の骨に取り付ける階段状の外面
6を有する。この実施例では、プロテーゼ組立体1は股
関節部取替用股臼カップ組立体であり、シェル2は患者
の股臼に取り付けられる。
る。そのとき、ネジ止具を用いてもよい。ネジ止具はシ
ェル2の孔24を通して挿入される。ネジ止具の頭はシ
ェル2に埋まり、挿入体4との相互作用を避ける。別の
方法では、シェル2は患者の股臼にセメント付けするこ
ともできる。
縁26がある。シェル2には、シェル2の縁26の隣り
にテーパ部14がある。挿入体4はカップ状であり、そ
の内面12は関節部、この実施例では大腿部頭に対する
ベアリング面となる。挿入体4の外面28にはテーパ部
16があり、シェル2の雌テーパ部14内にフィットす
る雄テーパとなる。挿入体4の外面28の残りの部分
は、シェル6の内面を圧迫しない大きさとする。挿入体
4の外面28とシェル2の内面22の間の空間は、シェ
ル2と挿入体4の間のテーパ6を操作するために必要で
ある。
4のカップ形状から放射方向に延びる拡大部10があ
る。縁の拡大部10は、シェル2の平らな縁26の上に
外方向に延びる肩を形作る。シェル2の平らな縁26と
縁の拡大部10の間に、ギャップ18が形成される。図
3に示すように、挿入体4の縁8は楕円形であり、楕円
形の中心からはずれて半球ベアリング面12がある。図
1及び図2に示すように、挿入体4の縁8を急に縁の拡
大部10に延ばすことができる。
アとアルミナが整形外科器具に使用できる。ジルコニア
は軟らかい物質、例えば超高分子密度ポリエチレンと使
用できる。ジルコニアを股関節部取替プロテーゼに使用
するとき、大腿部頭をジルコニアで作り、挿入体を超高
分子密度ポリエチレンで作る。
であり、最も良い結果を得るためには、大腿部頭とベア
リング挿入体に同じ物質を使用することが勧められる。
しかしながら、セラミックヘッドをコバルトークロミウ
ムヘッドで置き換えることもできる。アルミナ/アルミ
ナ結合が最も良好な特性を有するが非常に脆い。コバル
トークロミウム/ポリエチレン結合の摩耗速度は年当た
り0.2mmと0.5mmの間であることが知られてい
る。アルミナ/アルミナ結合の摩耗速度は年当たり0.
0001mmと0.005mmの間である。
がしばしば困難であるため、拡大挿入体4が必要とな
る。これは患者の解剖学的構造等に起因すると考えられ
る。従って、シェル2の不正確な位置付けの問題を克服
するために、ずれたベアリング面12を有する挿入体4
を使用することが必要である。関節の動きの範囲が増
し、ずれの危険が減少する。
入体がシェルの面でおおわれていれば、挿入体が壊れる
危険はほとんどない。もし挿入体のベアリング面が拡大
されていれば、縁の一部は支持されず、従ってセラミッ
ク挿入体が壊れる危険は非常に高い。外科医が手術する
とき、初めにシェルを股臼に固定し、次に、生物学的適
合性プラスチックで作られたトライアル挿入体4を用い
て拡大挿入体4に最適な位置を見い出だすよう努力す
る。外科医が挿入体4に必要な正確な位置を決めたら、
セラミック挿入体4をシェル2の中に押し込む。挿入体
4とシェル2におけるテーパ部14と16の相互作用に
より、挿入体4はシェル2内でロックされる。テーパロ
ック機構は挿入体がシェル2の内側で360度回転でき
るようにし、完全な位置自由性を付与する。その後、外
科医は動く範囲をためし、シェル2内の拡大挿入体4の
位置を少し変えることができる。満足したら、外科医は
挿入体4をシェル2に密着させ、2つのテーパ部14と
16を互いにしっかりとロックさせる。
部分における縁の厚み10を増すことにより、拡大挿入
体4の強度を変えた。拡大挿入体4の強度が増したこと
により、拡大挿入体をアルミナ、ジルコニウム等のセラ
ミック物質で作ることが可能となった。縁の拡大部10
とシェル2の平らな縁26の間には、小さなギャップ2
0がなければならない。これにより、テーパロックの操
作が可能となる。
た拡大挿入体と、本発明の拡大挿入体4について、限定
要素分析がなされた。本発明の拡大挿入体4では応力が
減り、従って挿入体4が破壊される全体的な危険も減る
という結果が示された。本発明の範囲を離れることな
く、前述したものに対し変更や改良を加えることはでき
る。
請求項1記載のプロテーゼ組立体。 (2)前記セラミック物質がアルミナまたはジルコニア
である実施態様(1)記載のプロテーゼ組立体。 (3)前記固定要素が合成プラスチック物質又は金属で
作られている請求項1及び実施態様(1)ないし(2)
のいずれかに記載のプロテーゼ組立体。 (4)前記固定要素と前記ベアリングカップ部の間にテ
ーパ接触がある請求項1及び実施態様(1)ないし
(3)のいずれかに記載のプロテーゼ組立体。 (5)前記ベアリングカップ部が、雄部を形成するよう
にテーパされている外面を有する実施態様(4)記載の
プロテーゼ組立体。
ップ部の雄部と対応する雌部を形成するようにテーパさ
れている内面を有する実施態様(5)記載のプロテーゼ
組立体。 (7)前記ベアリングカップ部の縁が実質的に楕円であ
る請求項1及び実施態様(1)ないし(6)のいずれか
に記載のプロテーゼ組立体。 (8)前記カップ部のベアリング内面が前記カップ部の
楕円内で中心からずれている実施態様(7)記載のプロ
テーゼ組立体。 (9)前記プロテーゼ組立体が股臼カップ組立体である
請求項1及び実施態様(1)ないし(8)のいずれかに
記載のプロテーゼ組立体。 (10)図面に記載されているようなプロテーゼ組立
体。
びたベアリング面を有するセラミックス物質からなるカ
ップ状挿入体を含むプロテーゼ組立体を提供できる効果
がある。
図である。
図である。
Claims (1)
- 【請求項1】 患者の骨に取り付けるための固定要素
と、縁のあるベアリングカップ部とからなり、前記縁の
一部は拡大していて、前記拡大部は前記カップ部からほ
ぼ放射方向に延びる肩の形であり、前記縁の一部の幅が
増しているプロテーゼ組立体。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9717391.8A GB9717391D0 (en) | 1997-08-15 | 1997-08-15 | Prosthesis assembly |
| GB9717391.8 | 1997-08-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11169392A true JPH11169392A (ja) | 1999-06-29 |
| JP4248629B2 JP4248629B2 (ja) | 2009-04-02 |
Family
ID=10817589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24259898A Expired - Fee Related JP4248629B2 (ja) | 1997-08-15 | 1998-08-14 | プロテーゼ組立体 |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0901777B1 (ja) |
| JP (1) | JP4248629B2 (ja) |
| AU (1) | AU7880298A (ja) |
| CA (1) | CA2245042C (ja) |
| DE (1) | DE69814269T2 (ja) |
| GB (1) | GB9717391D0 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003526455A (ja) * | 2000-03-14 | 2003-09-09 | スミス アンド ネフュー インコーポレーテッド | 可変型幾何学的配列リム面付きの寛骨臼用シェルライナー |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10003543A1 (de) * | 2000-01-27 | 2001-08-02 | Klaus Draenert | Pressfit Cup mit Dämpfungseigenschaften |
| US7682398B2 (en) | 2000-03-14 | 2010-03-23 | Smith & Nephew, Inc. | Variable geometry rim surface acetabular shell liner |
| US20030039728A1 (en) | 2001-08-21 | 2003-02-27 | Herrick James Peter | Device and method for on-demand dispensing of spoonable or drinkable food products having visual appearance of multi-components |
| EP2007318B8 (en) | 2006-03-20 | 2014-03-12 | Smith & Nephew, Inc. | Acetabular cup assembly for multiple bearing materials |
| GB0907036D0 (en) | 2009-04-24 | 2009-06-03 | Depuy Int Ltd | Surgical prostheses |
| US12171666B2 (en) | 2019-12-10 | 2024-12-24 | Depuy Ireland Unlimited Company | Metal reinforced acetabular shell liner |
| US11291549B2 (en) | 2019-12-11 | 2022-04-05 | Depuy Ireland Unlimited Company | Ceramic acetabular shell liners with augments |
| CN113827376B (zh) * | 2021-11-23 | 2022-04-19 | 北京爱康宜诚医疗器材有限公司 | 髋臼假体 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3325448A1 (de) * | 1983-07-14 | 1985-01-24 | Link Waldemar Gmbh Co | Hueftpfannen-endoprothese |
| FR2651995A1 (fr) * | 1989-09-15 | 1991-03-22 | Aubaniac Jean Manuel | Anneau pour implant cotylouidien. |
| FR2677878B1 (fr) * | 1991-06-20 | 1994-06-03 | Tec Implant Sarl | Prothese cotylouidienne. |
| FR2682588B1 (fr) * | 1991-10-22 | 1995-09-08 | Lepine Groupe | Implant cotylouidien. |
| DE59209116D1 (de) * | 1992-09-01 | 1998-02-12 | Sulzer Orthopaedie Ag | Doppelschalige Revisionshüftgelenkpfanne |
-
1997
- 1997-08-15 GB GBGB9717391.8A patent/GB9717391D0/en active Pending
-
1998
- 1998-08-05 AU AU78802/98A patent/AU7880298A/en not_active Abandoned
- 1998-08-13 CA CA002245042A patent/CA2245042C/en not_active Expired - Fee Related
- 1998-08-14 EP EP98306497A patent/EP0901777B1/en not_active Expired - Lifetime
- 1998-08-14 JP JP24259898A patent/JP4248629B2/ja not_active Expired - Fee Related
- 1998-08-14 DE DE69814269T patent/DE69814269T2/de not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003526455A (ja) * | 2000-03-14 | 2003-09-09 | スミス アンド ネフュー インコーポレーテッド | 可変型幾何学的配列リム面付きの寛骨臼用シェルライナー |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4248629B2 (ja) | 2009-04-02 |
| CA2245042C (en) | 2008-02-12 |
| DE69814269T2 (de) | 2004-04-08 |
| GB9717391D0 (en) | 1997-10-22 |
| EP0901777A3 (en) | 1999-08-18 |
| AU7880298A (en) | 1999-02-25 |
| EP0901777A2 (en) | 1999-03-17 |
| CA2245042A1 (en) | 1999-02-15 |
| EP0901777B1 (en) | 2003-05-07 |
| DE69814269D1 (de) | 2003-06-12 |
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