JP5553268B2 - 椎体間固定外科手術システム及び椎体間固定外科手術用椎体間スペース保持装置 - Google Patents
椎体間固定外科手術システム及び椎体間固定外科手術用椎体間スペース保持装置 Download PDFInfo
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- JP5553268B2 JP5553268B2 JP2010550492A JP2010550492A JP5553268B2 JP 5553268 B2 JP5553268 B2 JP 5553268B2 JP 2010550492 A JP2010550492 A JP 2010550492A JP 2010550492 A JP2010550492 A JP 2010550492A JP 5553268 B2 JP5553268 B2 JP 5553268B2
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- Prior art keywords
- interbody fusion
- main body
- rear end
- vertebral bodies
- screw
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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
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- 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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- 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
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- A61F2/46—Special tools for implanting artificial joints
- A61F2/4603—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof
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-
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- 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
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- A—HUMAN NECESSITIES
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- 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
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- 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
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- A61F2310/00035—Other metals or alloys
- A61F2310/00131—Tantalum or Ta-based alloys
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Transplantation (AREA)
- Neurology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Cardiology (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)
- Physical Education & Sports Medicine (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Description
11、11b、11c、11d、11e、11g、11h、11i 本体
12 前端面
13 後端面
14 外面係合部((部分)雄ねじ)
14a 外面係合部(スプライン歯)
14b 先端部(尖鋭刃)
14c 外面係合部(鋸歯)
15 外面係合部((完全)雄ねじ)
16 雌ねじ
16a 中空内面
17、17a、17c、17d、18、18a、18c、18d ガイド孔
19 カット側面
21、22、23 側面開口
24、25、26 上下面開口
27 後端開口
28 小穴
29、44、54 後端係合部
30、30A、30B、30C、30D、30E、30F、30a、30b、30c、30d、30j、30k ピン
30An、30Dn 薄板材
30Bn、30En、30Cn、30Fn 線材
31、31a、31b、31c、31d、31j、31k (ピンの)後端
32、32a、32b、32c、32d、32j、32k (ピンの)先端
33、33k 基端部
34、34k 雌ねじ穴
40、40a、40j、40k、50 押圧ねじ
41、41j、41k、51、95a、96a 雄ねじ部
42、42j、42k、52 キャップ
43、53 先端面
43a 先端部
43b 傾斜面
44、45 挿通孔
55 摩擦板
55a ピン固定溝
60 固定補強具
61 ボス
62 アーム
62a フランジ
62b ウエブ
70、70´、70´´ (椎体間固定外科手術用)椎体間スペース保持装置
70a、70´a 保持装置本体
70b、70´b クランプアーム開閉管
71、71´ 第1のシャフト部
71a、71´a、76a 先端部
71b ガイド筒
71c 針状突起
72、77、82、92 把持部
72a、77a、82a、92a ボス部
73、73´ スペーサー
74、74´ クランプアーム
74a 弾性支持部
74´a 支持部
74b 固定爪
74c 尖鋭突起
75 補強板
75a 後部支持部材
75b 前部支持部材
75c 挿通孔
76 第2のシャフト部
76´ 椎体固定機構
76´a ねじ部
76´b 長尺固定ねじ部材
76´c 頭部
78 ブラケット
79 リンク部材
80 本体嵌入ドライバー
81、91 シャフト部
83、93 先端係合部
90 押圧ねじドライバー
95、96 引抜きドライバー
Bd 脊柱手術台
C1 (本体の)主軸
C2、C3 (ガイド孔の)傾斜軸(中心軸)
K カニューレ
L 脊柱(脊椎)
L1、L2 椎体(椎骨)
L1a、L2a 対向面
L1b、L2b 係合溝
M 椎間板(椎間板スペース)
Ma、Mb、Mc、Md、Me (内視鏡用)ポート
Mf 切開創
MN 生体(人体)
MN1 腹(部)
MN2 背(部)
P1 第1の支持軸
P2 第2の支持軸
P3 第3の支持軸
X1、X1´ 全閉位置
X2 椎体把持/固定位置
X3、X3´ 全開位置
Θ1、Θ2 傾斜角
Claims (15)
- 2つの隣接する椎体(椎骨)間の適正な間隔を保持するように形成された前端有底の中央部外径が僅かに太めの太鼓状に形成された略中空円筒形の外面に前記2つの椎体の対向面部に係合する外面係合部が形成されるとともに、後端側の中空内面に適宜深さの雌ねじが形成され、さらに該雌ねじの先端中空内面から前記椎体の対向面に向かって軸方向に末広がりに傾斜し外面まで貫通する1つ又は複数の屈曲状又はストレート状のガイド孔が穿設された本体と、
屈曲変形可能に形成され、前記雌ねじ内に前記本体の主軸に沿って形成された前記ガイド孔内に遊嵌収容された1本又は複数のピンと、
前記本体の雌ねじに螺合しその軸方向推進力により、前記ピンの後端を押圧する押圧ねじと、
前記押圧ねじの後端に前記本体の後端面の全面又は一部を覆うキャップと、
を備え、
前記本体が前記椎体間の椎間板スペースに前記外面係合部を介して嵌入され固定された後に、前記ピンが前記本体の前記雌ねじに螺合された前記押圧ねじの軸方向推進力により後端を押圧されて先端側が前記ガイド孔に沿って順次案内され前記椎体内に差込まれる椎体間固定装置を具備した椎体間固定外科手術システムであって、
前記押圧ねじに遊嵌されるボスと、
該ボスの外面に軸対称に立設され、前記押圧ねじのキャップ部にボス部後端面が押圧されて先端部が前記隣接する椎体の腹部側前面にそれぞれ係合固定される1対のアームと、からなる固定補強具をさらに備えたことを特徴とする椎体間固定外科手術システム。 - 前記ピンは、屈曲変形可能なように形成され丸や多角形を含む任意断面形状の中実又は中空の棒状体もしくは少なくとも先端側又は全長に亘り複数の薄板材又は丸や各種扁平型を含む任意断面形を有する線材が積層されて一体的な丸や多角形を含む任意断面形状の棒状積層体からなり、その先端部が尖鋭状に形成されていることを特徴とする請求項1記載の椎体間固定外科手術システム。
- 前記ピンは、後端に雌ねじ穴が設けられた基端部が個別又は一体的に形成され連設されており、
前記押圧ねじは前記本体内への螺合方向とは逆方向の回転操作により前記本体内から、前記本体は前記椎体間への嵌入方向とは逆方向への回転及び/又は引抜き操作により椎体間からそれぞれ取外され体外に取出し可能であって、
前記ピンが椎体内に差込まれた後で、前記押圧ねじが前記本体から引抜かれるとともに、前記ピンが基端部の前記雌ねじ穴に螺合する雄ねじ部を先端部に備えた引抜きドライバーにより前記椎体間から引抜かれ、前記本体と共に体外に取出されるように構成されていることを特徴とする請求項1又は2に記載の椎体間固定外科手術システム。 - 前記基端部の前記雌ねじ穴内には、通常、後端部に被係合部を有する盲プラグが挿嵌されており、
前記ピンの引抜き操作に先立ち、前記盲プラグが前記被係合部に係合する係合部を先端部に備えたドライバーにより前記雌ねじ穴内から取外され体外に取出し可能であることを特徴とする請求項3記載の椎体間固定外科手術システム。 - 前記外面係合部は、雄ねじ状に形成されていることを特徴とする請求項1記載の椎体間固定外科手術システム。
- 前記外面係合部は、前記主軸に平行な複数のスプライン歯状に形成されていることを特徴とする請求項1記載の椎体間固定外科手術システム。
- 前記外面係合部は、前記主軸に平行な複数の鋸歯状に形成されていることを特徴とする請求項1記載の椎体間固定外科手術システム。
- 前記外面係合部の軸方向先端及び径方向外面頭頂部が尖鋭刃状に形成されていることを特徴とする請求項1、請求項5乃至請求項7のいずれか1項記載の椎体間固定外科手術システム。
- 前記本体には、外面の上下・左右にそれぞれ連通する血管新生用開口部及び骨内部成長用開口部が複数設けられていることを特徴とする請求項1乃至請求項8のいずれか1項記載の椎体間固定外科手術システム。
- 前記本体の雌ねじ内に遊嵌収容され、前記ピンの後端部に当接配置される摩擦板をさらに備えることを特徴とする請求項1乃至請求項9のいずれか1項記載の椎体間固定外科手術システム。
- 前記ピンの後端部が、少なくとも左右方向への移動が拘束されるように前記摩擦板に係合又は固定されていることを特徴とする請求項10記載の椎体間固定外科システム。
- 前記椎体間固定装置は、患者の腹部側から腹腔鏡を併用した椎体間固定外科手術により前記椎体間に固定されることを特徴とする請求項1乃至請求項11のいずれか1項記載の椎体間固定外科手術システム。
- 2つの隣接する椎体(椎骨)間の適正な間隔を保持するように形成された前端有底の中央部外径が僅かに太めの太鼓状に形成された略中空円筒形の外面に前記2つの椎体の対向面部に係合する外面係合部が形成されるとともに、後端側の中空内面に適宜深さの雌ねじが形成され、さらに該雌ねじの先端中空内面から前記椎体の対向面に向かって軸方向に末広がりに傾斜し外面まで貫通する1つ又は複数の屈曲状又はストレート状のガイド孔が穿設された本体と、
屈曲変形可能に形成され、前記雌ねじ内に前記本体の主軸に沿って形成された前記ガイド孔内に遊嵌収容された1本又は複数のピンと、
前記本体の雌ねじに螺合しその軸方向推進力により、前記ピンの後端を押圧する押圧ねじと、
を備え、
前記本体が前記椎体間の椎間板スペースに前記外面係合部を介して嵌入され固定された後に、前記ピンが前記本体の前記雌ねじに螺合された前記押圧ねじの軸方向推進力により後端を押圧されて先端側が前記ガイド孔に沿って順次案内され前記椎体内に差込まれる椎体間固定装置を具備した椎体間固定外科手術システムであって、
後端に把持部が設けられた中空長尺のシャフト部の先端に前記椎体間固定装置の本体の後端部に形成された後端係合部に係合する先端係合部を有し、
該先端係合部を前記本体の後端係合部に係合した状態で、生体腹部から前記椎体の前面まで形成された内視鏡用腹腔部内のカニューレ内に挿入されて前記2つの隣接する椎体間の適正な間隔を保持する椎体間スペース保持装置の中空部内に挿入され、前記本体を押圧又は/及び回転することにより前記椎体間に嵌入させる本体嵌入ドライバーを備え、
該先端係合部を前記押圧ねじの後端係合部に係合した状態で前記本体嵌入ドライバーの中空部内に挿入し、前記押圧ねじを前記椎間板スペースに固定された前記椎体間固定装置の本体の雌ねじ部に挿入して押圧しながら回転することにより前記雌ねじに螺合させその軸方向推進力により前記ピンの先端側をガイド孔に沿って順次案内させて前記椎体内に差込む押圧ねじドライバーをさらに備えることを特徴とする椎体間固定外科手術システム。 - 前記本体嵌入ドライバーは、先端係合部が金属製で、前記シャフト部は高分子材料からなることを特徴とする請求項13記載の椎体間固定外科手術システム。
- 前記押圧ねじドライバーは、先端係合部が金属製で、前記シャフト部は高分子材料からなることを特徴とする請求項13記載の椎体間固定外科手術システム。
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