JP7387641B2 - 球形の滑動パートナーとの滑動対を形成するためのインサート - Google Patents
球形の滑動パートナーとの滑動対を形成するためのインサート Download PDFInfo
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- JP7387641B2 JP7387641B2 JP2020562600A JP2020562600A JP7387641B2 JP 7387641 B2 JP7387641 B2 JP 7387641B2 JP 2020562600 A JP2020562600 A JP 2020562600A JP 2020562600 A JP2020562600 A JP 2020562600A JP 7387641 B2 JP7387641 B2 JP 7387641B2
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- insert
- shell
- sliding
- region
- spindle
- Prior art date
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- Prostheses (AREA)
Description
・Aは、LとL’’との間の距離もしくは中心点から回転軸線Lまでの水平距離である。
・rは、スピンドルトーラスを表す円の半径である。
・rPは、球形の滑動パートナーの半径、つまり補綴物ヘッドの半径である。
・Cは、間隙でありかつ数式Iによれば
C=(r-rP)*2 (数式I)
である。
間隙は、1つの構成では、(半径rPの)補綴物ヘッドの長さの製造技術的に予め設定された最大誤差と、補綴物ヘッドに適した、半球状の滑動領域を備えたインサートの長さの製造技術的に予め設定された最大誤差の和に相当する。1つの特別な構成では、C>10μm、好適には>25μm、特に好適には≧50μmかつ<500μm、好適には<350μm、特に好適には≦280μmである。
・スピンドルトーラスを表す円108の半径rは、KGの半径rPよりも大きくなっている。
・リング状の構成におけるインプラントのより小さな高さ、したがって例えば骨盤骨において極少量のフライス切削加工が必要とされている。このことは、存続する骨が小さいまたは少ない場合でも移植を可能にする。
・点状の荷重ではなく、生理的な荷重吸収と類似の、比較的小さな最大値を有する線状の荷重。
・半球状のインサートに比べ、本発明による幾何学形状では、接点に対してより小さな押圧力が生ぜしめられる。
・本発明による幾何学形状を備えたインサートは、従来のシェルおよび球形の滑動パートナーと無制限に組み合わせることができる。
・変更された幾何学形状は、周知の製造法が適用可能であるため、製造コストに不都合な影響を及ぼすことはない。
・製造および販売における材料の節減ならびにリングインサートの体積の削減(例えば加工装置における使用スペース)に基づき、コスト面での利点が得られる。
2 滑動領域
3 外面、面、緊締面
4 シェル
5,109 補綴物のヘッド、球
6 外側面
7 緊締面
8 インプラント
9 底面
10 端面
13 凹部
14 第2のシェル、バイポーラシェル
15 受容空間、ポケット
16 第1の支点
17 第2の支点
18 面
19 自由空間
20 高さ増大部
100 接点
101,112 環状接触部、接触線
105 スピンドル
106 スピンドルの外面
107 スピンドルの部分区域
108 スピンドルトーラスを表す円
110 正接点
111 接触線の断面
112 接触線
201 滑動領域の頭蓋状の高さ増大部の領域
202 インプラントの頭蓋状の延長部の領域
205 緊締面の領域(点で図示)
212,212’ 環状線(方向付け補助)
214 入口ゾーン
216 出口ゾーン
A スピンドルトーラスを表す円の中心点Mからの回転軸線の距離
C 間隙
D1 第1の領域に配置された、滑動領域の最大直径
D2 第2の領域に配置された、滑動領域の最小直径
E,E’ スピンドル外面とLとの交点
F 横断面
H インプラントの高さ
HG 滑動領域の高さ
K 頭蓋状の高さ増大部を表す直線
KG 滑動領域の頭蓋状の高さ増大部を表す直線
K’ 頭蓋状の延長部を表す直線
KG 球形の滑動パートナー
L スピンドルの長手方向軸線、回転軸線
L’,L’’ スピンドルトーラスを表す円の中心点を通る、Lに対して平行な軸線
M スピンドルの中心点
M’,M’’ スピンドルトーラスを表す円の中心点
MP 球形の滑動パートナーの中心点
r スピンドルトーラスを表す円の半径
rP 球形の滑動パートナー(KG、補綴物ヘッド)の半径
R 緊締面の回転軸線
S,S’ Lに対する垂直面
S1,S2 垂直面S,S’の、長手方向軸線L上の交点
X 頭蓋状の高さ増大部無しのインプラントの、端面の方の最大部
XG 頭蓋状の高さ増大部無しの滑動領域の、端面の方の最大部
X’ 頭蓋状の延長部無しのインプラントの、底面の方の最大部
x 頭蓋状の高さ増大部の高さの差
Y 頭蓋状の高さ増大部のインプラントの最大部
YG 頭蓋状の高さ増大部の滑動領域の最大部
Y’ 頭蓋状の延長部のインプラントの最大部
y 頭蓋状の延長部の高さの差
Claims (14)
- 球形の滑動パートナー(5,109)との滑動対を形成するためのインサート(1)であって、当該インサートは、ハーフシェル状またはリング状に形成されておりかつ球形の滑動パートナー(5,109)を受容する滑動領域(2)として形成された内面を有している、インサート(1)において、
前記滑動領域(2)は、非半球状であり、長手方向延在長さにおいてスピンドルトーラスのスピンドル(105)の半部の部分区域(107)に対応しており、前記滑動領域(2)の最大直径D1は、挿入しようとする前記球形の滑動パートナー(5,109)の直径よりも大きくなっており、
前記滑動領域(2)の最小直径D2は、挿入しようとする前記球形の滑動パートナー(5,109)の直径よりも小さくなっており、
前記スピンドルトーラスを表す円の半径r、間隙Cおよび補綴物の前記球の半径r P は、数式Iによれば、
C=(r-r P )*2 (数式I)
という関係にある、
ことを特徴とする、インサート(1)。 - 当該インサート(1)はリング状に形成されている、請求項1記載のインサート(1)。
- ・当該インサート(1)をシェル(4)内に固定可能にするための緊締面(3)が少なくとも部分的に配置された外側面(6)、および
・前記滑動パートナーを挿入する第1の領域、および
・前記滑動パートナーの受容部を画定する第2の領域
を有している、前記滑動対を形成するための請求項1または2記載のインサート(1)。 - 当該インサート(1)は、回転軸線Rを有しており、当該インサート(1)の前記緊締面(3)は、前記回転軸線Rに対して10°~20°の鋭角で配置されており、これにより、前記第2の領域における当該インサートの外寸は、前記第1の領域におけるよりも小さくなっている、請求項3記載のインサート(1)。
- 前記緊締面(3)の角度は、18°~18.5°である、請求項4記載のインサート(1)。
- 前記回転軸線Rは、前記スピンドル(105)の回転軸線Lに対して平行に配置されており、好適には該回転軸線Lに一致する、請求項4または5記載のインサート(1)。
- 前記緊締面(3)は、切欠きまたは接線方向の研削部の形態の複数の凹部を有している、請求項3から6までのいずれか1項記載のインサート(1)。
- 10μm<C<500μmが当てはまる、請求項1から7までのいずれか1項記載のインサート(1)。
- 当該インサートはセラミックである、請求項1から8までのいずれか1項記載のインサート(1)。
- 当該インサート(1)、好適には前記滑動領域(2)は、頭蓋状に拡張されている、請求項1から9までのいずれか1項記載のインサート(1)。
- 少なくとも1つのシェル(4)および請求項1から10までのいずれか1項記載のインサート(1)を含む、インプラント。
- 前記シェル(4)は、金属製でありかつ少なくとも1mm~3mm未満、好適には2mm未満の壁厚さを有している、請求項11記載のインプラント。
- 少なくとも2つのシェルを含み、前記インサート(1)は第2のシェル(14)内に挿入されており、該第2のシェルは第1の前記シェル(4)に挿入されている、請求項11または12記載のインプラント。
- 前記第2のシェルはプラスチック製、好適にはポリエチレン製である、請求項13記載のインプラント。
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EP18171109.4 | 2018-05-07 | ||
EP18171109 | 2018-05-07 | ||
PCT/EP2019/061525 WO2019215071A1 (de) | 2018-05-07 | 2019-05-06 | Insert für eine gleitpaarung mit einem kugelförmigen gleitpartner |
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JP2021522914A JP2021522914A (ja) | 2021-09-02 |
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EP (1) | EP3790511A1 (ja) |
JP (1) | JP7387641B2 (ja) |
KR (1) | KR20210006902A (ja) |
CN (1) | CN112040910A (ja) |
AU (1) | AU2019264786A1 (ja) |
BR (1) | BR112020019028A2 (ja) |
CA (1) | CA3093491A1 (ja) |
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DE102016222616A1 (de) | 2015-11-19 | 2017-05-24 | Ceramtec Gmbh | Ringförmiges keramisches Insert für die Endoprothetik |
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WO2006030392A1 (en) * | 2004-09-17 | 2006-03-23 | Arthrosearch (Proprietary) Limited | Joint prosthesis component |
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JP5216025B2 (ja) * | 2007-02-23 | 2013-06-19 | セラムテック アクチエンゲゼルシャフト | 端面と球冠状切欠きとの間の移行部のジオメトリの改良による、股関節プロテーゼに用いられるインサートにおける縞状摩耗の発生の低減 |
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WO2018087246A1 (de) * | 2016-11-09 | 2018-05-17 | Ceramtec Gmbh | Implantat mit ringinsert |
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2019
- 2019-05-06 WO PCT/EP2019/061525 patent/WO2019215071A1/de unknown
- 2019-05-06 KR KR1020207032094A patent/KR20210006902A/ko active Search and Examination
- 2019-05-06 BR BR112020019028-4A patent/BR112020019028A2/pt not_active Application Discontinuation
- 2019-05-06 EP EP19721625.2A patent/EP3790511A1/de not_active Withdrawn
- 2019-05-06 US US17/053,281 patent/US20210282934A1/en active Pending
- 2019-05-06 AU AU2019264786A patent/AU2019264786A1/en not_active Abandoned
- 2019-05-06 CN CN201980030890.1A patent/CN112040910A/zh active Pending
- 2019-05-06 CA CA3093491A patent/CA3093491A1/en active Pending
- 2019-05-06 JP JP2020562600A patent/JP7387641B2/ja active Active
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JP2006516216A (ja) | 2003-01-10 | 2006-06-29 | セラム コンセプト エル.エル.シー. | 人工股関節用の寛骨臼インプラント |
US20070032878A1 (en) | 2003-09-30 | 2007-02-08 | Technische Universitat | Acetabular liner |
US20090171466A1 (en) | 2007-12-28 | 2009-07-02 | Depuy Products, Inc. | Aspheric hip bearing couple |
JP2016500311A (ja) | 2012-12-18 | 2016-01-12 | ビスペビャー ホスピタル | 罹患関節における疼痛を軽減するための医療用インプラント |
DE102016222616A1 (de) | 2015-11-19 | 2017-05-24 | Ceramtec Gmbh | Ringförmiges keramisches Insert für die Endoprothetik |
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JP2021522914A (ja) | 2021-09-02 |
CN112040910A (zh) | 2020-12-04 |
BR112020019028A2 (pt) | 2020-12-29 |
KR20210006902A (ko) | 2021-01-19 |
CA3093491A1 (en) | 2019-11-14 |
AU2019264786A1 (en) | 2020-11-19 |
EP3790511A1 (de) | 2021-03-17 |
WO2019215071A1 (de) | 2019-11-14 |
US20210282934A1 (en) | 2021-09-16 |
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