JP7321609B2 - 椎間体融合ケージ - Google Patents
椎間体融合ケージ Download PDFInfo
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- JP7321609B2 JP7321609B2 JP2022520058A JP2022520058A JP7321609B2 JP 7321609 B2 JP7321609 B2 JP 7321609B2 JP 2022520058 A JP2022520058 A JP 2022520058A JP 2022520058 A JP2022520058 A JP 2022520058A JP 7321609 B2 JP7321609 B2 JP 7321609B2
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- fusion cage
- intervertebral
- moving member
- intervertebral body
- 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
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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
- 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
- A61F2/447—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 substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
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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
- A61F2/02—Prostheses implantable into the body
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- A61F2/4601—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for introducing bone substitute, for implanting bone graft implants or for compacting them in the bone cavity
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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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- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/4611—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
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- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30383—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
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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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- A61F2002/30433—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
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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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- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
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- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
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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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- A61F2002/4687—Mechanical guides for implantation instruments
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- 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)
Description
本発明の目的は、椎間体に挿入されて、隣接する脊椎体間の間隔を確保し、かつ、その高さを連続的なスケールで調節することができるので、患者オーダーメード型融合術を可能にするだけでなく、手術過程で医師の負担を軽減する椎間体融合ケージを提供することにある。
Claims (13)
- 上下が開放されて形成される収容部、上部ガイド部および下部ガイド部を含む胴体と、
前記収容部内に配置される移動部材と、
前記胴体に螺合し、回転時に前記移動部材と一体に前記胴体に対して前方または後方に相対運動するネジと、
前記上部ガイド部によりガイドされる被ガイド部を有し、前記移動部材に係合して前記胴体の上部に配置される上部プレートと、
前記下部ガイド部によりガイドされる被ガイド部を有し、前記移動部材に係合して前記胴体の下部に配置される下部プレートと、を含み、
前記移動部材は、両側壁に上下方向に形成されたグルーブをそれぞれ含み、
前記上部プレートおよび前記下部プレートは、前記グルーブに挿入される突出部をそれぞれ含み、
前記上部プレートおよび前記下部プレートは、前記突出部を通じて前記移動部材に係合する
椎間体融合ケージ。 - 前記上部プレートおよび前記下部プレートが人体の脊椎体間に固設された状態で、前記ネジが一方向に回転時に、前記胴体が前記ネジおよび前記移動部材により前方に移動しつつ、前記上部プレートは、前記上部ガイド部に沿って上方向に移動し、前記下部プレートは、前記下部ガイド部に沿って下方向に移動する、請求項1に記載の椎間体融合ケージ。
- 前記上部ガイド部は、前記胴体の上部に後方から前方に下方傾斜した形態で形成され、前記下部ガイド部は、前記胴体の下部に後方から前方に上方傾斜した形態で形成される、請求項1に記載の椎間体融合ケージ。
- 前記胴体は、前方に形成されたネジホールをさらに含み、
前記ネジは、前記移動部材に回転自在に結合するヘッド部と、前記ネジホールに螺合するネジ山部と、を含む、請求項1に記載の椎間体融合ケージ。 - 前記移動部材は、側壁により四方を囲まれ、上下が開放されて形成され、前方側壁に前記ヘッド部が貫通して結合するように形成された螺合ホールを含む、請求項4に記載の椎間体融合ケージ。
- 前記胴体は、前記収容部と連通して後方に貫通形成された後方ホールをさらに含み、
前記移動部材は、前記後方ホールを通過したネジ回転ツールが前記ヘッド部に進入できるように後方側壁に貫通形成されたガイドホールをさらに含む、請求項5に記載の椎間体融合ケージ。 - 前記後方ホールは、前記椎間体融合ケージの人体への挿入のための手術ツールの結合インターフェースを提供する、請求項6に記載の椎間体融合ケージ。
- 前記上部ガイド部および前記下部ガイド部は、それぞれ、前記胴体の両側面に形成される、請求項1に記載の椎間体融合ケージ。
- 前記上部プレートおよび前記下部プレートは、前方に一側方から他側方に行くほど前方に突出するように形成された前方傾斜部を含む、請求項1に記載の椎間体融合ケージ。
- 前記上部プレートおよび前記下部プレートは、上下対称を成して形成される、請求項9に記載の椎間体融合ケージ。
- 前記上部プレートおよび前記下部プレートは、それぞれ、上部および下部に前記前方傾斜部と平行に形成されたキール部を含む、請求項10に記載の椎間体融合ケージ。
- 前記上部プレートおよび前記下部プレートは、上下方向に貫通したウィンドウ部をそれぞれ含む、請求項1に記載の椎間体融合ケージ。
- 前記胴体は、側壁により四方を囲まれ、上下が開放されて形成される、請求項12に記載の椎間体融合ケージ。
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