JP6949006B2 - 拡張可能な椎間インプラント - Google Patents
拡張可能な椎間インプラント Download PDFInfo
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- JP6949006B2 JP6949006B2 JP2018510401A JP2018510401A JP6949006B2 JP 6949006 B2 JP6949006 B2 JP 6949006B2 JP 2018510401 A JP2018510401 A JP 2018510401A JP 2018510401 A JP2018510401 A JP 2018510401A JP 6949006 B2 JP6949006 B2 JP 6949006B2
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Description
Claims (11)
- 脊柱の一部分の第1の椎体と第2の椎体との間への移植のための椎間スペーサであって、第1の端部と第2の端部とそれらの間に延在する第1の軸線とを有し、当該椎間スペーサは、
第1の上側の本体と第1の下側の本体とを含んでいる第1の支持部材、および
第2の支持部材を含み、
当該椎間スペーサは、前記第1の支持部材を前記第2の支持部材から第1の方向に沿って離すように拡張させ、且つ前記第1の上側の本体を前記第1の下側の本体から第2の方向に沿って離すように拡張させるべく、前記第1の軸線に沿った軸方向の力を加えることによって拡張可能であり、
前記椎間スペーサは、前記椎間スペーサの第1の端部に配置され、前記第1および第2の支持部材に連結された第1の端部本体と、前記椎間スペーサの第2の端部に位置され、前記第1および第2の支持部材に連結された第2の端部本体とをさらに含み、そこで、前記軸方向の力が、前記椎間スペーサを拡張させるべく、前記第1および第2の端部本体の少なくとも1つに作用しており、
前記椎間スペーサは、複数の単一のリンクをさらに含み、前記単一のリンクは、前記第1および第2の支持部材の1つと前記端部本体の1つのそれぞれに直接的に連結されており、
前記単一のリンクの各々は、前記第1の支持部材を前記第1の方向に沿って前記第2の支持部材から離すように拡張させるために、連結されている前記端部本体に対して横方向外側に回転し、
個々のリンクのそれぞれは、少なくとも1つの停止面を含み、当該停止面は、前記椎間スペーサの前記第1の方向に沿っての拡張を制限するために、前記第1および第2の端部本体の1つに当接することを特徴とする椎間スペーサ。 - 前記第1の方向は、前記第1の軸線に直交し、そして、前記第2の方向は前記第1の軸線および前記第1の方向に対して直交していることを特徴とする請求項1に記載の椎間スペーサ。
- 前記椎間スペーサは、前記第1の軸線に沿って延在する少なくとも1つの平面に対して左右対称であることを特徴とする請求項1に記載の椎間スペーサ。
- 前記第1の端部本体は、前記椎間スペーサを拡張させるために、前記第1の軸線に沿って、前記第2の端部本体に向かって引き寄せられることを特徴とする請求項1に記載の椎間スペーサ。
- 前記上側および下側の本体の各々は、第2の凹部と連通する第1の凹部を含み、前記第1の凹部は、前記第2の凹部よりも前記上側および下側の本体内により深く窪まされていることを特徴とする請求項1ないし4のいずれか一項に記載の椎間スペーサ。
- 傾斜部が前記第1の凹部と前記第2の凹部とを連結し、そして単一のリンクの1つが、前記上側の本体を前記第2の方向に沿って前記下側の本体から離すべく拡張させるために、前記第1の凹部から前記傾斜部に沿って前記第2の凹部内に付勢されることを特徴とする請求項5に記載の椎間スペーサ。
- 前記椎間スペーサは、
前記第1の支持部材が前記第2の支持部材に直接に隣接し、そして前記第1の下側の本体が前記第1の上側の本体に当接している折り畳まれた構成、
前記第1の支持部材が前記第1の方向に沿って前記第2の支持部材から離れて拡張された横方向に拡張された構成、
前記第1の上側の本体が前記第2の方向に沿って前記第1の下側の本体から離れて拡張された垂直方向に拡張された構成、および
前記第1および第2の支持部材のそれぞれに統合的に形成されている暫定的なロック用構造、をさらに含み、
当該暫定的なロック用構造は、前記椎間スペーサが垂直方向に拡張された構成から意図せずに折り畳まれることを防止することを特徴とする請求項1ないし6のいずれか一項に記載の椎間スペーサ。 - 補助的なロック用構造をさらに含み、当該補助的なロック用構造は、前記椎間スペーサを垂直方向に拡張された構成にロックするために、前記第1および第2の端部本体の少なくとも1つと係合可能であることを特徴とする請求項1ないし7のいずれか一項に記載の椎間スペーサ。
- 前記第1の上側の本体または前記第1の下側の本体の少なくとも1つは、前記第1の軸線に対して傾斜した外側の面を含み、当該傾斜した外側の面は、前記椎間スペーサが脊椎の一部分の第1および第2の椎体の間に移植されたとき、統合的な前弯矯正を提供することを特徴とする請求項1ないし8のいずれか一項に記載の椎間スペーサ。
- 前記第1および第2の支持部材は、互いに不等な高さであり、前記椎間スペーサは、前記第1の軸線に沿って延在する垂直平面に対して左右非対称であることを特徴とする請求項1ないし9のいずれか一項に記載の椎間スペーサ。
- 前記第2の支持部材は、第2の上側の本体と第2の下側の本体とを含み、前記椎間スペーサが垂直方向に拡張された構成にあるとき、前記第2の上側の本体は前記第2の下側の本体から離れて第2の方向に沿って拡張されていることを特徴とする請求項1ないし10のいずれか一項に記載の椎間スペーサ。
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US20180344476A1 (en) | 2018-12-06 |
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