JP2010012256A - 後方安定型整形外科プロテーゼ - Google Patents
後方安定型整形外科プロテーゼ Download PDFInfo
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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
- A61F2/38—Joints for elbows or knees
- A61F2/3886—Joints for elbows or knees for stabilising knees against anterior or lateral dislocations
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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
- A61F2/38—Joints for elbows or knees
- A61F2/3836—Special connection between upper and lower leg, e.g. constrained
-
- 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
- A61F2/38—Joints for elbows or knees
- A61F2/3868—Joints for elbows or knees with sliding tibial bearing
Abstract
【解決手段】脛骨ベアリングは、凹状カム面および凸状カム面を有する、突起を含む。大腿骨構成要素は、凹状カム面および凸状カム面を有する、後方カムを含む。屈曲中、後方カムの凹状カム面は、突起の凸状カム面に接触し、後方カムの凸状カム面は、突起の凹状カム面に接触する。
【選択図】図1
Description
2008年6月XX日出願の、John L. Williamsらによる、「Orthopaedic Femoral Component Having Controlled Condylar Curvature」と題された米国特許出願第XX/XXX,XXX号;2008年6月XX日出願の、Christel M. Wagnerによる、「Posterior Cruciate-Retaining Orthopaedic Knee Prosthesis Having Controlled Condylar Curvature」と題された米国特許出願第XX/XXX,XXX号;および、2008年6月XX日出願の、Joseph G. Wyssによる、「Posterior Stabilized Orthopaedic Knee Prosthesis Having Controlled Condylar Curvature」と題された米国特許出願第XX/XXX,XXX号に対して、相互参照を行い、これら特許出願の全体が、参照により本明細書に組み込まれる。
本開示は、概して、整形外科プロテーゼに関し、特に、膝関節置換手術で用いられる、後方安定型整形外科プロテーゼ(posterior stabilized orthopaedic prostheses)に関する。
関節形成術は、周知の外科処置であり、この処置により、罹患および/または損傷した自然の関節が、プロテーゼ関節と置換される。典型的な膝関節用プロテーゼは、脛骨トレー、大腿骨構成要素、および脛骨トレーと大腿骨構成要素との間に位置付けられたポリマーインサートまたはベアリングを含む。膝関節用プロテーゼは、一般的に、患者の関節の自然な動きを再現するように設計される。しかしながら、患者の関節への損傷のひどさに応じて、様々な可動性の整形外科プロテーゼを用いることができる。例えば、ある患者では、整形外科処置中に、後十字靭帯が、損傷されるか、欠損されるか、または除去される場合がある。このような場合、典型的には大腿骨に対する脛骨の後方運動を禁止または制限する、後方安定型膝関節用整形外科プロテーゼを用いることができる。
一態様によると、後方安定型膝関節用整形外科プロテーゼは、脛骨ベアリング、および大腿骨構成要素を含む。脛骨ベアリングは、脛骨トレーに連結されるように構成されることができ、また、プラットホーム、およびプラットホームから上向きに延びる突起(spine)を含むことができる。突起は、上方カム面および下方カム面を含む後方側面を有することができる。上方カム面は、凸状カム面として具体化されてよく、下方カム面は、凹状カム面として具体化されてよい。脛骨ベアリングの突起の凹状カム面の曲率半径は、突起の凸状カム面の曲率半径に実質的に等しいか、またはそれとは異なっていてよい。
本開示の概念は、様々な改変および代替形態が可能であるが、本開示の具体的な例示的実施形態が、図面に例として示されており、本明細書中で詳細に説明されるであろう。しかしながら、本開示の概念を、開示された特定の形態に制限することは意図しておらず、それどころか、添付の特許請求の範囲により定められるような、本発明の趣旨および範囲に属するすべての改変、等価物、および代替案を含むことが意図されていることが、理解されるべきである。
Claims (20)
- 整形外科プロテーゼにおいて、
脛骨トレーに連結されるように構成された脛骨ベアリングであって、前記脛骨ベアリングは、プラットホーム、および前記プラットホームから上向きに延びる突起を有し、前記突起は、凹状カム面および凸状カムを含む後方側面を有する、脛骨ベアリングと、
前記脛骨ベアリングと関節接合するように構成された大腿骨構成要素であって、前記大腿骨構成要素は、
(i)一対の離間した顆であって、前記顆の間に顆間ノッチを画定している、一対の離間した顆、ならびに、
(ii)前記顆間ノッチに位置付けられた後方カムであって、前記後方カムは、凹状カム面および凸状カム面を含む、後方カム、を含む、
大腿骨構成要素と、
を含み、
前記後方カムの前記凹状カム面は、第1の屈曲範囲の間中、前記突起の前記凸状カム面に接触し、前記後方カムの前記凸状カム面は、第2の屈曲範囲の間中、前記突起の前記凹状カム面に接触する、整形外科プロテーゼ。 - 請求項1に記載の整形外科プロテーゼにおいて、
前記脛骨ベアリングの前記突起の前記凸状カム面は、矢状面において凸状に湾曲しており、前記突起の前記凹状カム面は、前記矢状面において凹状に湾曲している、整形外科プロテーゼ。 - 請求項2に記載の整形外科プロテーゼにおいて、
前記突起の前記凹状カム面および前記凸状カム面は、横断面において凸状に湾曲している、整形外科プロテーゼ。 - 請求項3に記載の整形外科プロテーゼにおいて、
前記突起の前記凹状カム面の前記横断面における曲率半径は、前記突起の前記凸状カム面の前記横断面における曲率半径に実質的に等しい、整形外科プロテーゼ。 - 請求項1に記載の整形外科プロテーゼにおいて、
前記大腿骨構成要素の前記後方カムの前記凹状カム面は、矢状面において凹状に湾曲しており、前記大腿骨構成要素の前記後方カムの前記凸状カム面は、前記矢状面において凸状に湾曲している、整形外科プロテーゼ。 - 請求項5に記載の整形外科プロテーゼにおいて、
前記大腿骨構成要素の前記後方カムの前記凹状カム面および前記凸状カム面は、内側‐外側方向において凹状に湾曲している、整形外科プロテーゼ。 - 請求項1に記載の整形外科プロテーゼにおいて、
前記脛骨ベアリングの前記突起、および前記大腿骨構成要素の前記後方カムは、それぞれ、実質的に「S」字型の断面外形を有する、整形外科プロテーゼ。 - 請求項1に記載の整形外科プロテーゼにおいて、
前記脛骨ベアリングの前記突起の前記凸状カム面は、前記突起の前記凹状カム面に対して上方に位置している、整形外科プロテーゼ。 - 請求項1に記載の整形外科プロテーゼにおいて、
前記第1の屈曲範囲の屈曲度は、前記第2の屈曲範囲の屈曲度より小さい、整形外科プロテーゼ。 - 請求項1に記載の整形外科プロテーゼにおいて、
前記第1の屈曲範囲は、屈曲約50度〜屈曲約80度であり、
前記第2の屈曲範囲は、屈曲約80度〜屈曲約150度である、整形外科プロテーゼ。 - 請求項1に記載の整形外科プロテーゼにおいて、
前記脛骨ベアリングの前記突起の前記凹状カム面は、第1の曲率半径により定められ、前記突起の前記凸状カム面は、第2の曲率半径により定められ、前記第1の曲率半径は、前記第2の曲率半径とは異なる、整形外科プロテーゼ。 - 請求項11に記載の整形外科プロテーゼにおいて、
前記大腿骨構成要素の前記後方カムの前記凹状カム面は、第1の曲率半径により定められ、前記大腿骨構成要素の前記後方カムの前記凸状カム面は、第2の半径により定められ、前記第1の曲率半径は、前記第2の曲率半径とは異なる、整形外科プロテーゼ。 - 整形外科プロテーゼにおいて、
脛骨トレーに連結されるように構成された脛骨ベアリングであって、前記脛骨ベアリングは、プラットホーム、および前記プラットホームから上向きに延びる突起を有し、前記突起は、矢状面において実質的に「S」字型断面を有する後方カム面を含む、脛骨ベアリングと、
大腿骨の遠位端部の、外科的に準備された表面に連結されるように構成された大腿骨構成要素であって、前記大腿骨構成要素は、後方カムを含み、前記後方カムは、矢状面において実質的に「S」字型断面を有するカム面を含む、大腿骨構成要素と、
を含み、
前記後方カムの前記カム面は、ある屈曲範囲の間中、前記突起の前記後方カム面上で関節接合する、整形外科プロテーゼ。 - 請求項13に記載の整形外科プロテーゼにおいて、
前記脛骨ベアリングの前記後方カム面は、前記矢状面において凹状カム面および凸状カム面を含み、前記凹状カム面は、前記矢状面において凹状に湾曲しており、前記凸状カム面は、前記矢状面において凸状に湾曲している、整形外科プロテーゼ。 - 請求項14に記載の整形外科プロテーゼにおいて、
前記脛骨ベアリングの前記後方カム面の前記凹状カム面および前記凸状カム面は、横断面において湾曲している、整形外科プロテーゼ。 - 請求項15に記載の整形外科プロテーゼにおいて、
前記大腿骨構成要素の前記後方カムの前記カム面は、凹状カム面、および凸状カム面を含み、前記凹状カム面は、前記矢状面において凹状に湾曲しており、前記凸状カム面は、前記矢状面において凸状に湾曲している、整形外科プロテーゼ。 - 請求項16に記載の整形外科プロテーゼにおいて、
前記大腿骨構成要素の前記後方カムの前記凹状カム面および前記凸状カム面は、内側‐外側方向において湾曲している、整形外科プロテーゼ。 - 請求項17に記載の整形外科プロテーゼにおいて、
前記後方カムの前記凹状カム面は、第1の屈曲範囲の間中、前記突起の前記凸状カム面に接触し、前記後方カムの前記凸状カム面は、第2の屈曲範囲の間中、前記突起の前記凹状カム面に接触する、整形外科プロテーゼ。 - 請求項17に記載の整形外科プロテーゼにおいて、
前記大腿骨構成要素の前記後方カムは、横断面において前記脛骨ベアリングの前記突起の周りを回転するように構成されている、整形外科プロテーゼ。 - 後方安定型膝関節用整形外科プロテーゼにおいて、
脛骨トレーに連結されるように構成された脛骨ベアリングであって、前記脛骨ベアリングは、
(i)内側ベアリング表面および外側ベアリング表面を含む、プラットホーム、ならびに、
(ii)前記内側ベアリング表面と前記外側ベアリング表面との間で前記プラットホームから上向きに延びる突起であって、前記突起は、上方カム面および下方カム面を有する後方側面を含み、
(i)前記上方カム面は、矢状面において凸状に湾曲しており、
(ii)前記下方カム面は、前記矢状面において凹状に湾曲しており、
(iii)前記上方カム面および前記下方カム面は、横断面において凸状に湾曲している、
突起、を有する、
脛骨ベアリングと、
大腿骨の遠位端部の、外科的に準備された表面に連結されるように構成された大腿骨構成要素であって、前記大腿骨構成要素は、
(i)前記脛骨ベアリングの前記外側ベアリング表面と関節接合するように構成された外側顆、
(ii)前記内側ベアリング表面と関節接合するように構成された内側顆、ならびに、
(iii)前記外側顆と前記内側顆との間に画定された顆間ノッチに位置付けられた後方カムであって、前記後方カムは、前方カム面および後方カム面を含み、
(i)前記前方カム面は、矢状面において凹状に湾曲しており、
(ii)前記後方カム面は、前記矢状面において凸状に湾曲しており、
(iii)前記前方カム面および前記後方カム面は、内側‐外側方向において凹状に湾曲している、
後方カム、を含む、
大腿骨構成要素と、
を含み、
前記後方カムの前記前方カム面は、最初に、第1の屈曲度で、前記突起の前記上方カム面に接触し、前記後方カムの前記後方カム面は、最初に、前記第1の屈曲度より大きい第2の屈曲度で、前記突起の前記下方カム面に接触する、後方安定型膝関節用整形外科プロテーゼ。
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US12/165,582 US8206451B2 (en) | 2008-06-30 | 2008-06-30 | Posterior stabilized orthopaedic prosthesis |
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AU2009202627A1 (en) | 2010-01-14 |
DK2149354T3 (en) | 2015-03-09 |
JP5535533B2 (ja) | 2014-07-02 |
EP2878283A1 (en) | 2015-06-03 |
US20120259417A1 (en) | 2012-10-11 |
US8734522B2 (en) | 2014-05-27 |
ES2534653T3 (es) | 2015-04-27 |
EP2878283B8 (en) | 2016-12-28 |
ES2614051T3 (es) | 2017-05-29 |
EP2149354B1 (en) | 2015-01-14 |
CN101683289B (zh) | 2014-08-13 |
US8206451B2 (en) | 2012-06-26 |
AU2009202627B2 (en) | 2015-07-02 |
US9204968B2 (en) | 2015-12-08 |
EP2878283B1 (en) | 2016-11-09 |
US20090326666A1 (en) | 2009-12-31 |
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US20140228965A1 (en) | 2014-08-14 |
CN101683289A (zh) | 2010-03-31 |
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