JP5420580B2 - 位置決め可能なヘッド部を備えた補綴具組立体 - Google Patents
位置決め可能なヘッド部を備えた補綴具組立体 Download PDFInfo
- Publication number
- JP5420580B2 JP5420580B2 JP2011060855A JP2011060855A JP5420580B2 JP 5420580 B2 JP5420580 B2 JP 5420580B2 JP 2011060855 A JP2011060855 A JP 2011060855A JP 2011060855 A JP2011060855 A JP 2011060855A JP 5420580 B2 JP5420580 B2 JP 5420580B2
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- JP
- Japan
- Prior art keywords
- hole
- prosthesis
- attachment element
- stem
- substantially solid
- 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.)
- Expired - Fee Related
Links
- 239000007787 solid Substances 0.000 claims abstract description 40
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 description 11
- 241001653121 Glenoides Species 0.000 description 10
- 238000001356 surgical procedure Methods 0.000 description 6
- 210000001503 joint Anatomy 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 210000002758 humerus Anatomy 0.000 description 4
- 230000013011 mating Effects 0.000 description 4
- 210000000323 shoulder joint Anatomy 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007796 conventional method Methods 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
- 210000001513 elbow Anatomy 0.000 description 1
- 210000002310 elbow joint Anatomy 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 210000004394 hip joint Anatomy 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 210000000629 knee joint Anatomy 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 210000002832 shoulder Anatomy 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Images
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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)
Description
この発明の開示内容は、関節用補綴具(joint prostheses)に関するものであり、特に、関節運動型のヘッド部品を有する補綴具に関するものである。より詳細には、この発明の開示内容は、関節用補綴具の骨係合部に対するヘッド部品の位置を調節可能にするシステムに関するものである。
この発明の原理に対する理解を促すことを目的として、図面中に示され、かつ次に記載された明細書中に記述された実施の形態に対して言及がなされる。これにより、この発明の範囲に限定される意図がないものと理解される。この発明が、図示された実施の形態に対するいかなる変更および修正を含み、かつ、この発明の属する技術分野における当業者の一人によって通常、想起されるような、この発明の原理のさらなる適用を含むものと、さらに理解される。
以下、この発明の実施の態様を説明する。
(1)骨、ならびに、対向する自然の関節構成要素および対向する補綴具の関節部品のうち少なくとも1つに関係した関節用の補綴具において、
前記骨に係合する幹状部であって、孔を画定する表面を含む、幹状部と、
前記対向する自然の関節構成要素および対向する補綴具の関節部品のうち少なくとも1つに係合した状態で関節運動するための支持表面を含む関節部品と、
前記関節部品に係合する近位部を含み、かつ連続的な周縁部を有する実質的に中実の関節運動部をさらに含む取付要素と、
を含み、
前記実質的に中実の関節運動部は、前記連続的な周縁部が前記孔に強制的に係合されない場合には、前記孔内での前記実質的に中実の関節運動部の関節運動を容易にするように構成され、かつ、前記実質的に中実の関節運動部および前記孔は、前記連続的な周縁部が前記孔に強制的に係合される場合には、前記取付要素を前記幹状部に連結固定するように構成されている、
補綴具。
(2)実施態様1記載の補綴具において、
前記実質的に中実の関節運動部は、複数の自由度での前記取付要素の運動を許容するために、前記孔に接触する球状表面を含む、補綴具。
(3)実施態様2記載の補綴具において、
前記球状表面は、一部を切除した球状(frusto-spherical)をなす、補綴具。
(4)実施態様3記載の補綴具において、
前記孔は、前記実質的に中実の関節運動部の前記一部を切除した球状の表面に接触する実質的に均等に先細りとなっているテーパー表面を含む、補綴具。
(5)実施態様4記載の補綴具において、
前記孔および前記実質的に中実の関節運動部は、前記孔と前記実質的に中実の関節運動部との間での摩擦係合が前記幹状部に対する前記取付要素の向きを固定する役割を果たすように構成されている、補綴具。
(6)実施態様1記載の補綴具において、
前記実質的に中実の関節運動部および前記孔は、前記実質的に中実の関節運動部が前記孔に対して移動可能であるすべての複数の位置で、前記孔内に前記実質的に中実の関節運動部を着座させるのに役立つように構成されている、補綴具。
(7)実施態様6記載の補綴具において、
前記孔および前記実質的に中実の関節運動部は、前記孔と前記実質的に中実の関節運動部との間での摩擦係合が前記幹状部に対する前記取付要素の向きを固定する役割を果たすように構成されている、補綴具。
(8)実施態様7記載の補綴具において、
前記関節部品および前記取付要素の前記近位部は、前記関節部品を前記取付要素に係合させるためのソケットテーパー境界面を画定する、補綴具。
(9)実施態様1記載の補綴具において、
前記関節部品および前記取付要素の前記近位部は、前記関節部品を前記取付要素に係合させるためのソケットテーパー境界面を画定する、補綴具。
(10)関節の嵌合部品に関係した補綴具において、
骨係合部、および前記関節の前記嵌合部品に対向するための表面を含む幹状部であって、前記表面がテーパー孔を画定する、幹状部と、
前記関節の前記嵌合部品と共に関節運動する支持表面を含むヘッド部品と、
前記ヘッド部品に係合するように構成された近位部を含み、かつ実質的に中実の関節運動部をさらに含む取付要素であって、前記実質的に中実の関節運動部は、前記テーパー孔内に収容され、かつ前記実質的に中実の関節運動部が前記テーパー孔内に押し込められた場合に、前記テーパー孔に摩擦嵌めにより係合されるように寸法設定された球状の支持表面を画定し、前記係合は、大円を画定する前記球状の支持表面の一部に沿って実質的に連続的になされている、取付要素と、
を含む、補綴具。
(11)実施態様10記載の補綴具において、
前記球状の支持表面は、一部を切除した球状をなす、補綴具。
(12)関節部品を骨に取り付ける方法において、
前記骨に幹状部を挿入するステップと、
前記幹状部によって画定されたテーパー孔内に取付要素の実質的に中実の関節運動部を位置させ、これにより前記テーパー孔の表面の楕円形部と大円を画定する前記実質的に中実の関節運動部の表面の一部との間での実質的に連続した係合を維持しながら、前記幹状部に対して複数の自由度で前記取付要素を実質的に自由に回転させるステップと、
前記関節部品を前記取付要素の近位部に係合するステップと、
前記幹状部に対する前記関節部品の角度位置を変更させるように前記取付要素を操作するステップと、
前記幹状部に対する前記取付要素の位置を固定するように前記実質的に中実の関節運動部を前記テーパー孔内に押し込むステップと、
を含む、方法。
(13)実施態様12記載の方法において、
前記押し込むステップは、前記実質的に中実の関節運動部を前記テーパー孔内に圧入するステップを含む、方法。
(14)実施態様13記載の方法において、
前記圧入するステップは、手操作によって、前記実質的に中実の関節運動部を前記テーパー孔内に圧入するように制限される、方法。
補綴具組立体において、
骨に植え込まれるように構成された幹状部であって、前記幹状部は、開いた近位端から閉じた遠位端まで延びる容器を含み、前記容器は、前記開いた近位端と前記閉じた遠位端との間に置かれたテーパー部を有し、前記テーパー部は、テーパー壁構造体により画定される、幹状部と、
対向する自然の関節構成要素および対向する補綴具の関節部品のうち少なくとも1つに嵌合するように構成された支持表面を有するヘッド部であって、連結部をさらに有する、ヘッド部と、
(i)前記ヘッド部の前記連結部と嵌合関係で位置付けられる近位部、および(ii)前記テーパー壁構造体と接触して位置付けられる一部を切除した球体状の遠位部を含む、取付要素と、を備え、
前記テーパー壁構造体と摩擦嵌め係合して位置付けられ、かつ前記容器の内側テーパー部に沿ってのみ前記容器に接触している前記一部を切除した球体状の遠位部により、前記取付要素は、前記幹状部に対して固定関係で機械的にロックされる、補綴具組立体。
上記補綴具において、
前記テーパー壁構造体は、均等に先細りとなっている、補綴具。
上記補綴具において、
前記ヘッド部は、その中に画定された空洞を有し、
前記取付要素の前記近位部は、前記空洞内部で摩擦嵌めされる、補綴具。
上記補綴具において、
前記ヘッド部、および前記取付要素の前記近位部は、前記ヘッド部を前記取付要素に係合させるためのテーパー境界面を画定する、補綴具。
補綴具組立体において、
骨係合部、およびテーパー壁構造体により画定されるテーパー部を有する容器を含む、幹状部と、
支持表面および連結部を含むヘッド部と、
(i)前記ヘッド部の前記連結部と嵌合するように構成された近位部、および(ii)前記容器の周縁部全体の周りに連続的に接触して位置付けられる球状の支持表面を画定する遠位部を含む、取付要素と、を備える、補綴具組立体。
上記補綴具において、
前記球状の支持表面は、一部を切除した球体状の支持表面である、補綴具。
上記補綴具組立体において、
前記取付要素が前記幹状部に対して固定関係で機械的にロックされ、前記取付要素の前記近位部が前記ヘッド部の前記空洞内部で摩擦嵌めされると、前記取付要素の前記一部を切除した球体状の遠位部は、前記容器の前記閉じた遠位端から離れて間隔をあける、補綴具組立体。
上記補綴具組立体において、
前記取付要素が前記幹状部に対して固定関係で機械的にロックされ、前記取付要素の前記近位部が前記ヘッド部の前記空洞内部で摩擦嵌めされたときに、前記ヘッド部のどの部分も前記幹状部に接触しない、補綴具組立体。
上記補綴具組立体において、
前記一部を切除した球体状の遠位部は、円形の周縁部を有する平坦な表面を画定する下方端を含む、補綴具組立体。
上記補綴具組立体において、
前記取付要素は、前記近位部を前記一部を切除した球体状の遠位部に連結する中間部をさらに含む、補綴具組立体。
上記補綴具組立体において、
前記取付要素の前記中間部は、前記近位部から前記一部を切除した球体状の遠位部へと先細りになる、補綴具組立体。
上記補綴具組立体において、
前記取付要素は、前記テーパー壁構造体と摩擦嵌め係合して位置付けられている前記球状の支持表面によって、前記幹状部に対して固定関係で機械的にロックされる、補綴具組立体。
上記補綴具組立体において、
前記摩擦嵌め係合は、大円を画定する前記球状の支持表面の一部に沿って切れ目なく行われる、補綴具組立体。
上記補綴具において、
前記テーパー壁構造体は、均等に先細りとなっている、補綴具。
上記補綴具において、
前記ヘッド部は、その中に画定された空洞を有し、
前記取付要素の前記近位部は、前記空洞内部で摩擦嵌めされる、補綴具。
上記補綴具において、
前記ヘッド部、および前記取付要素の前記近位部は、前記ヘッド部を前記取付要素に係合させるためのテーパー境界面を画定する、補綴具。
上記補綴具組立体において、
前記容器は、開いた近位端、および閉じた遠位端を有し、
前記取付要素の前記球状の支持表面は、前記閉じた遠位端から離れて間隔をあける、補綴具組立体。
上記補綴具組立体において、
前記取付要素が前記幹状部に対して固定関係で機械的にロックされ、前記取付要素の前記近位部が前記ヘッド部の前記空洞内部で摩擦嵌めされたときに、前記ヘッド部のどの部分も前記幹状部に接触しない、補綴具組立体。
上記補綴具組立体において、
前記取付要素の前記遠位部は、円形の周縁部を有する平坦な表面を画定する下方端を含む、補綴具組立体。
上記補綴具組立体において、
前記取付要素は、前記近位部を前記遠位部に連結する中間部をさらに含み、
前記取付要素の前記中間部は、前記近位部から前記遠位部へと先細りになる、補綴具組立体。
Claims (4)
- 骨、ならびに、対向する自然の関節構成要素および対向する補綴具の関節部品のうち少なくとも1つに関係した関節用の補綴具において、
前記骨に係合する幹状部であって、孔を画定する表面を含む、幹状部と、
前記対向する自然の関節構成要素および対向する補綴具の関節部品のうち少なくとも1つに係合した状態で関節運動するための支持表面を含む関節部品と、
前記関節部品に係合する近位部を含み、かつ、前記幹状部の前記孔内に受け入れられ、連続的な周縁部および複数の自由度での取付要素の運動を許容するための球状表面を有する実質的に中実の関節運動部をさらに含む取付要素と、
を含み、
前記幹状部の前記孔は、前記取付要素の運動を許容するように、前記取付要素の前記実質的に中実の関節運動部の前記球状表面により接触され、
前記幹状部の前記孔は、実質的に均等に先細りとなっているテーパー表面を含み、前記幹状部の前記孔は、前記実質的に中実の関節運動部が挿入される開口部である最外端が最も広く、奥側に向かって徐々に狭くなり、最奥端が最も狭くなっており、
前記取付要素の前記近位部は前記取付要素の前記実質的に中実の関節運動部の近位端と一体に形成され、
前記実質的に中実の関節運動部は、前記連続的な周縁部が前記孔に強制的に係合されない場合には、前記孔内での前記実質的に中実の関節運動部の関節運動を容易にするように構成され、かつ、前記実質的に中実の関節運動部および前記孔は、前記連続的な周縁部が前記孔に強制的に係合される場合には、前記取付要素を前記幹状部に連結固定するように構成されており、
前記実質的に中実の関節運動部を前記孔の奥側に押し込むことで、前記実質的に中実の関節運動部が前記孔に圧入係合したことにより生じた摩擦力によって、前記取付要素が前記幹状部に連結固定されるようになっている、
補綴具。 - 請求項1記載の補綴具において、
前記球状表面は、一部を切除した球状をなす、補綴具。 - 請求項1記載の補綴具において、
前記孔および前記実質的に中実の関節運動部は、前記孔と前記実質的に中実の関節運動部との間での摩擦係合が前記幹状部に対する前記取付要素の向きを固定する役割を果たすように構成されている、補綴具。 - 請求項1記載の補綴具において、
前記実質的に中実の関節運動部および前記孔は、前記実質的に中実の関節運動部が前記孔に対して移動可能であるすべての複数の位置で、前記孔内に前記実質的に中実の関節運動部を着座させるのに役立つように構成されている、補綴具。
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US11/241,387 US8679185B2 (en) | 2005-09-30 | 2005-09-30 | Joint prosthesis with positionable head |
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US9681954B2 (en) | 2017-06-20 |
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US20140039634A1 (en) | 2014-02-06 |
EP1769776B1 (en) | 2011-11-09 |
US20140135943A1 (en) | 2014-05-15 |
EP2298246B1 (en) | 2012-10-24 |
JP2011115647A (ja) | 2011-06-16 |
AU2006225167A1 (en) | 2007-04-19 |
US9913720B2 (en) | 2018-03-13 |
EP2298246A1 (en) | 2011-03-23 |
US20070078519A1 (en) | 2007-04-05 |
ATE532484T1 (de) | 2011-11-15 |
AU2006225167B2 (en) | 2012-02-02 |
JP2007125372A (ja) | 2007-05-24 |
DK2298246T3 (da) | 2013-02-04 |
ES2374086T3 (es) | 2012-02-13 |
EP1769776A1 (en) | 2007-04-04 |
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