JP4188922B2 - 1つまたはそれ以上の骨構造との融合のための装置 - Google Patents
1つまたはそれ以上の骨構造との融合のための装置 Download PDFInfo
- Publication number
- JP4188922B2 JP4188922B2 JP2005022008A JP2005022008A JP4188922B2 JP 4188922 B2 JP4188922 B2 JP 4188922B2 JP 2005022008 A JP2005022008 A JP 2005022008A JP 2005022008 A JP2005022008 A JP 2005022008A JP 4188922 B2 JP4188922 B2 JP 4188922B2
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- JP
- Japan
- Prior art keywords
- longitudinal
- implant member
- proximal end
- implant
- distal end
- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
- A61F2/446—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages having a circular or elliptical cross-section substantially parallel to the axis of the spine, e.g. cylinders or frustocones
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- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- 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
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
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Landscapes
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Description
この発明の第2の実施形態では、融合ケージは、基端部と、該基端部の直径よりも小さい直径を有する先端部とを有する円錐状のケージ本体を有している。この円錐状のケージ本体は、円錐状の外面と、該円錐状の外面に形成された少なくとも1つの縦溝とを有している。この縦溝は、逃げとして機能するけれども、この縦溝は、ねじり動作を用いて、2つの椎骨構造間に融合ケージを挿入することを容易にするために、タッピンねじ上に配置される。
この発明は、隣接する椎体間の弯曲を維持または増大させるために腹側からのアプローチにより、融合ケージを導入し得る点に利点がある。この融合ケージは、円錐状であることおよび外部の縦溝の使用によるタッピングという利点がある。縦溝は、融合ケージが椎骨構造間に挿入されるときに、該融合ケージを位置調整しかつ中心合わせした状態に維持することを付加的に補助する。
24 先端部
40 ねじ
42 縦溝
44 縦溝
46 縦溝
54 孔
200 融合ケージ
300 融合ケージ
Claims (25)
- 1つまたはそれ以上の骨構造との融合を促進するための融合ケージであって、
基端部と先端部とを有するケージ本体を具備し、
このケージ本体が、内部空所と長手軸とを形成しており、
前記先端部が、前記基端部の直径よりも小さな直径を有し、
前記ケージ本体が、外面と、この外面に形成されたねじ山と、を有し、
前記外面と前記内部空所とを連通する複数の孔が、前記ケージ本体を貫通して形成され、
前記孔の大きさが、前記先端部から前記基端部に向かって増大するものとされ、
前記先端部が、1つまたはそれ以上の骨構造に対する挿入を容易にするために丸い形状をしていることを特徴とする融合ケージ。 - 1つまたはそれ以上の骨構造との融合を促進するための装置であって、
基端部と先端部とを有する植え込み部材を具備し、
この植え込み部材が、長手軸を形成しており、
前記植え込み部材が、自身の長手方向に沿って延在する少なくとも1つの長手方向部分を備え、
この長手方向部分が、前記長手軸に対する横断方向において丸い横断面寸法を有していて、その横断面寸法が、前記基端部から前記先端部に向けて次第に減少しており、
これにより、前記先端部が、挿入開始面を形成し、
この挿入開始面が、1つまたはそれ以上の骨構造に対する挿入を容易にするために、閉鎖され、
前記植え込み部材に形成された複数の孔の大きさが、前記先端部から前記基端部に向かって増大するものとされ
ていることを特徴とする装置。 - 前記植え込み部材の前記挿入開始面が、全体的に丸い形状とされていることを特徴とする請求項2記載の装置。
- 前記植え込み部材の前記長手方向部分が、円錐台形状とされていることを特徴とする請求項2記載の装置。
- 前記植え込み部材が、外面部分を備え、
この外面部分が、骨の成長を誘発し得るよう不連続部分を有していることを特徴とする請求項4記載の装置。 - 前記外面部分が、1つまたはそれ以上の骨構造に隣接した位置決めを容易とし得るよう、ねじ部を有していることを特徴とする請求項5記載の装置。
- 前記植え込み部材が、骨の成長を誘発する物質を収容する大きさにされた中空の内部空所を備えていることを特徴とする請求項4記載の装置。
- 前記植え込み部材が、第2の長手方向部分を備え、
この第2の長手方向部分が、自身の長手方向において一定の横断面寸法とされた円筒形状を形成していることを特徴とする請求項2記載の装置。 - 1つまたはそれ以上の骨構造との融合を促進するための装置であって、
基端部と先端部とを有する植え込み部材を具備し、
この植え込み部材が、長手軸を形成しており、
前記植え込み部材が、自身の長手方向に沿って延在する少なくとも1つの長手方向部分を備え、
この長手方向部分が、前記長手軸に対する横断方向において丸い横断面寸法を有していて、その横断面寸法が、前記基端部から前記先端部に向けて次第に減少しており、
前記長手方向部分が、全体的に円錐台形状とされ、
前記植え込み部材が、骨の成長を誘発する物質を収容する大きさにされた中空の内部空所を備え、
前記植え込み部材が、前記内部空所と連通するようにして外壁部分を貫通して形成された複数の孔を備え、
前記孔の大きさが、前記先端部から前記基端部に向かって増大するものとされ、
これにより、1つまたはそれ以上の骨構造との融合を促進し得るよう骨の成長が誘発され、
前記先端部が、挿入開始面を形成し、
この挿入開始面が、1つまたはそれ以上の骨構造に対する挿入を容易にするために、閉鎖されていることを特徴とする装置。 - 前記外壁部分が、ねじ部を備え、
このねじ部に少なくとも1つの縦溝が形成されていることを特徴とする請求項9記載の装置。 - 1つの縦溝が、前記挿入開始面にまで延在していることを特徴とする請求項10記載の装置。
- 前記ねじ部に、複数の縦溝が形成されていることを特徴とする請求項10記載の装置。
- 前記複数の孔が、1つまたはそれ以上の骨構造に隣接されて前記植え込み部材を配置した際に、前記内部空所内に収容された骨成長誘発物質を前記骨構造に対して即座に接触させ得るようなものとして、構成されていることを特徴とする請求項9記載の装置。
- 互いに隣接する椎骨間の融合を容易とするための装置であって、
互いに隣接した椎骨間の椎間板空間の中へと挿入し得るような寸法のものとして構成された長尺の植え込み部材を具備し、
この植え込み部材が、基端部と先端部とを有しているとともに、長手軸を形成しており、
前記植え込み部材が、自身の長手方向に沿って延在する少なくとも1つの長手方向部分を備え、
前記長手方向部分が、全体的に円錐台形状とされ、
前記長手方向部分の横断面寸法が、前記基端部から前記先端部に向けて次第に減少しており、
前記植え込み部材が、骨の成長を誘発する物質を収容する大きさにされた中空の内部空所を備え、
前記植え込み部材が、前記内部空所と連通するようにして外壁部分を貫通して形成された複数の孔を備え、
前記孔の大きさが、前記先端部から前記基端部に向かって増大するものとされ、
前記先端部が、挿入開始面を形成し、
この挿入開始面が、この挿入開始面を通しての前記内部空所内へのアクセスを禁止し得るよう、閉鎖されていることを特徴とする装置。 - 前記植え込み部材が、前記椎間板空間内への挿入を容易とし得るよう、外面ねじ部を備えていることを特徴とする請求項14記載の装置。
- 前記植え込み部材が、少なくとも1つの縦溝を備え、
1つの縦溝が、前記ねじ部に形成されていることを特徴とする請求項15記載の装置。 - 前記挿入開始面内に形成された少なくとも1つの縦溝を備えていることを特徴とする請求項16記載の装置。
- 前記内部空所を閉鎖するために、前記植え込み部材の前記基端部に対して取り付けられ得るエンドキャップを具備していることを特徴とする請求項17記載の装置。
- 前記複数の孔が、1つまたはそれ以上の骨構造に隣接されて前記植え込み部材を配置した際に、前記内部空所内に収容された骨成長誘発物質を前記骨構造に対して即座に接触させ得るようなものとして、構成されていることを特徴とする請求項14記載の装置。
- 植え込み部材と挿入工具との組み合わせであって、
前記植え込み部材が、1つまたはそれ以上の骨構造との融合を促進するためのものであって、基端部と先端部とを有するとともに、長手軸を形成しており、
前記植え込み部材が、自身の長手方向に沿って延在する少なくとも1つの長手方向部分を備え、
前記長手方向部分が、その横断面寸法が前記基端部から前記先端部に向けて次第に減少する形状とされ、
前記植え込み部材が、骨の成長を誘発する物質を収容する大きさにされた中空の内部空所を備え、
前記植え込み部材が、前記内部空所と連通するようにして外壁部分を貫通して形成された複数の孔を備え、
前記孔の大きさが、前記先端部から前記基端部に向かって増大するものとされ、
前記植え込み部材が、前記内部空所を閉鎖するために、前記植え込み部材の前記基端部に対して取り付けられ得るエンドキャップを備え、
前記挿入工具が、前記植え込み部材の挿入を容易とし得るものであって、遠位端を有した長尺部材を備え、
前記遠位端が、前記植え込み部材のくぼみ内に受け入れられる舌部と、前記エンドキャップの受入ねじ孔内に受け入れられるねじ付き軸と、を有していることを特徴とする組み合わせ。 - 互いに隣接する椎骨間の融合を容易とするための装置であって、
互いに隣接した椎骨間の椎間板空間の中へと挿入し得るような寸法のものとして構成された長尺の植え込み部材を具備し、
この植え込み部材が、基端部と先端部とを有しているとともに、長手軸を形成しており、
前記植え込み部材が、自身の長手方向に沿って延在する少なくとも1つの長手方向部分を備え、
前記長手方向部分が、その横断面寸法が前記基端部から前記先端部に向けて次第に減少する形状とされ、
前記植え込み部材が、骨の成長を誘発する物質を収容する大きさにされた中空の内部空所を備え、
前記植え込み部材が、前記内部空所と連通するようにして外壁部分を貫通して形成された複数の孔を備え、
前記孔の大きさが、前記先端部から前記基端部に向かって増大するものとされ、
前記基端部が、前記内部空所に対するアクセスを可能とする開口を有し、これにより、前記内部空所内に骨成長誘発物質を容易に収容し得るものとされ、
前記基端部に対して着脱可能に取り付けられ得るエンドキャップを具備していることを特徴とする装置。 - 前記長手方向部分が、前記植え込み部材の主要部分にわたって延在するような寸法とされていることを特徴とする請求項21記載の装置。
- 前記長手方向部分が、全体的に円錐台形状とされていることを特徴とする請求項22記載の装置。
- 前記エンドキャップが、前記植え込み部材の前記基端部の前記開口を実質的に閉塞し得るような寸法とされていることを特徴とする請求項21記載の装置。
- 前記先端部が、閉塞された挿入開始面を形成していることを特徴とする請求項21記載の装置。
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JP2005022008A Expired - Fee Related JP4188922B2 (ja) | 1994-09-15 | 2005-01-28 | 1つまたはそれ以上の骨構造との融合のための装置 |
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-
1995
- 1995-09-08 EP EP95931724A patent/EP0781113B1/en not_active Expired - Lifetime
- 1995-09-08 ES ES95931724T patent/ES2171193T3/es not_active Expired - Lifetime
- 1995-09-08 JP JP8510239A patent/JPH10508766A/ja active Pending
- 1995-09-08 AU AU35053/95A patent/AU696997B2/en not_active Ceased
- 1995-09-08 WO PCT/US1995/011281 patent/WO1996008205A1/en active IP Right Grant
- 1995-09-08 DE DE69526094T patent/DE69526094T2/de not_active Expired - Lifetime
- 1995-09-08 CA CA002199637A patent/CA2199637C/en not_active Expired - Fee Related
-
1997
- 1997-01-15 US US08/783,790 patent/US5906616A/en not_active Expired - Lifetime
-
2003
- 2003-01-24 US US10/350,834 patent/US20030114854A1/en not_active Abandoned
-
2005
- 2005-01-28 JP JP2005022008A patent/JP4188922B2/ja not_active Expired - Fee Related
- 2005-07-20 US US11/185,418 patent/US7608105B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0781113A4 (en) | 1997-12-29 |
US5906616A (en) | 1999-05-25 |
US20050256575A1 (en) | 2005-11-17 |
US20030114854A1 (en) | 2003-06-19 |
CA2199637A1 (en) | 1996-03-21 |
JP2005118596A (ja) | 2005-05-12 |
AU3505395A (en) | 1996-03-29 |
DE69526094T2 (de) | 2002-11-21 |
JPH10508766A (ja) | 1998-09-02 |
US7608105B2 (en) | 2009-10-27 |
CA2199637C (en) | 2007-05-01 |
AU696997B2 (en) | 1998-09-24 |
WO1996008205A1 (en) | 1996-03-21 |
DE69526094D1 (de) | 2002-05-02 |
ES2171193T3 (es) | 2002-09-01 |
EP0781113A1 (en) | 1997-07-02 |
EP0781113B1 (en) | 2002-03-27 |
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