JP4796623B2 - 膨張可能な椎間移植片 - Google Patents
膨張可能な椎間移植片 Download PDFInfo
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- JP4796623B2 JP4796623B2 JP2008509032A JP2008509032A JP4796623B2 JP 4796623 B2 JP4796623 B2 JP 4796623B2 JP 2008509032 A JP2008509032 A JP 2008509032A JP 2008509032 A JP2008509032 A JP 2008509032A JP 4796623 B2 JP4796623 B2 JP 4796623B2
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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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- A61F2/4603—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
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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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- A61F2/28—Bones
- A61F2002/2817—Bone stimulation by chemical reactions or by osteogenic or biological products for enhancing ossification, e.g. by bone morphogenetic or morphogenic proteins [BMP] or by transforming growth factors [TGF]
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- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
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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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- 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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- A61F2/00—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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- A61F2/00—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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
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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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- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2002/448—Joints for the spine, e.g. vertebrae, spinal discs comprising multiple adjacent spinal implants within the same intervertebral space or within the same vertebra, e.g. comprising two adjacent spinal implants
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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
- A61F2/02—Prostheses implantable into the body
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- A61F2002/4625—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 with relative movement between parts of the instrument during use
- A61F2002/4627—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 with relative movement between parts of the instrument during use with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument
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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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- A61F2310/00005—The prosthesis being constructed from a particular material
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- A—HUMAN NECESSITIES
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- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Transplantation (AREA)
- Neurology (AREA)
- Heart & Thoracic Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Cardiology (AREA)
- Vascular Medicine (AREA)
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Description
本発明の原理の理解を促進させる目的で、図面に示す実施の形態をここで参照し、その説明のために特定の用語を使用する。しかし、それによって本発明の要旨を限定する意図がないこと、及び、本発明に関連する当業者なら、図示の装置及び(又は)ここで示すような本発明の原理の更なる応用に対する変形及び更なる修正が考えられることを理解されたい。
本発明の他の実施の形態においては、端壁34、36の一方のみが軸方向の開口84を画定し、他方の端壁は軸方向の開口84とは反対側の移植片本体22の端部を閉じるような実質上中実の形状を有することを理解すべきである。
Claims (22)
- 膨張可能な椎間移植片において、
長手軸線を有し、初期形状と膨張形状との間を移行できる移植片本体であって、横断方向の軸線に沿って離間した第1及び第2の軸方向の壁を有し、同軸方向の壁の少なくとも一方は、上記移植片本体が上記初期形状にあるときに、くぼんだ区域を画定するような移植片本体と、
上記移植片本体を上記初期形状から上記膨張形状へ移行させるように上記軸方向の壁の上記少なくとも一方と相互作用する膨張部材とを有し、
上記くぼんだ区域が上記横断方向の軸線にほぼ沿って外方へ膨張し、
上記移植片本体が上記膨張部材をその中に受け入れるように寸法決めされた内側の室を画定し、
上記内側の室内での上記膨張部材の軸方向の運動が上記移植片本体を上記膨張形状へ移行させ、
上記第1及び第2の軸方向の壁が上記内側の室に対面する内側表面を有し、同内側表面の少なくとも1つが上記長手軸線に沿った内方の先細り部を画定し、上記膨張部材が、上記移植片本体を上記膨張形状の方へ移行させるように、上記軸方向の運動中上記内方の先細り部と摺動自在に係合することを特徴とする移植片。 - 上記移植片本体が上記第1の軸方向の壁の両端部分を上記第2の軸方向の壁の両端部分に相互接続する第1及び第2の横断方向の端壁を有することを特徴とする請求項1に記載の移植片。
- 上記くぼんだ区域が上記横断方向の軸線に沿って内方へ延びる凹状の湾曲部を有することを特徴とする請求項2に記載の移植片。
- 上記凹状の湾曲部が上記対をなす両端部分間で上記軸方向の壁の上記少なくとも一方の実質上全長に沿って延びることを特徴とする請求項3に記載の移植片。
- 上記移植片本体が上記端壁の一方に隣接する第1の外側の横断方向寸法を有し、当該移植片本体は、同移植片本体が上記初期形状にあるときに上記くぼんだ区域に隣接する第2の外側の横断方向寸法を有し、
上記第2の外側の横断方向寸法が上記第1の外側の横断方向寸法よりも小さいことを特徴とする請求項2に記載の移植片。 - 上記軸方向の壁の上記少なくとも一方が上記くぼんだ区域から外方に突出する多数の表面突出部を有することを特徴とする請求項2に記載の移植片。
- 上記軸方向の壁の上記少なくとも一方の上記両端部分が平面に沿って位置し、上記表面突出部は、上記移植片本体が上記初期形状にあるときに上記平面の内方に少なくとも部分的に位置することを特徴とする請求項6に記載の移植片。
- 上記表面突出部が椎骨と係合するようになった歯を有することを特徴とする請求項7に記載の移植片。
- 上記表面突出部は、上記移植片本体が上記初期形状にあるときに上記平面の内方に全体的に位置することを特徴とする請求項7に記載の移植片。
- 上記表面突出部が上記移植片本体の中央部分に制限されることを特徴とする請求項6に記載の移植片。
- 上記くぼんだ区域が上記移植片本体の実質上全長に沿って画定されることを特徴とする請求項1に記載の移植片。
- 上記くぼんだ区域が上記横断方向の軸線に沿って内方に及び上記移植片本体の実質上全長に沿って延びる凹状の湾曲部を有することを特徴とする請求項1に記載の移植片。
- 上記軸方向の壁の上記少なくとも一方が後方端部分と前方端部分とを有し、上記くぼんだ区域が上記後方及び前方端部分間で上記横断方向の軸線に沿って内方に延びる凹状の湾曲部を有することを特徴とする請求項12に記載の移植片。
- 上記軸方向の壁の上記少なくとも一方が上記長手軸線に沿って配置された対向する第1及び第2の端部分を有し、当該軸方向の壁の当該少なくとも一方が上記くぼんだ区域から外方に突出する多数の表面突出部を有し、
上記軸方向の壁の上記少なくとも一方の上記対向する第1及び第2の端部分が平面に沿って位置し、上記表面突出部は、上記移植片本体が上記初期形状にあるときに上記平面の内方に少なくとも部分的に位置することを特徴とする請求項1に記載の移植片。 - 上記表面突出部は、上記移植片本体が上記初期形状にあるときに上記平面の内方に全体的に位置することを特徴とする請求項14に記載の移植片。
- 上記軸方向の壁の上記少なくとも一方の上記くぼんだ区域は、上記移植片本体が上記膨張形状へ移行したときに上記横断方向の軸線に沿って外方に延びる凸状の湾曲部を画定することを特徴とする請求項1に記載の移植片。
- 上記第1及び第2の軸方向の壁の各々は、上記移植片本体が上記初期形状にあるときにくぼんだ区域を画定し、上記膨張部材が当該初期形状から上記膨張形状へ当該移植片本体を移行させるように当該第1及び第2の軸方向の壁と相互作用し、上記くぼんだ区域の各々が上記横断方向の軸線にほぼ沿って外方に膨張することを特徴とする請求項1に記載の移植片。
- 上記移植片本体が上記第1の軸方向の壁の両端部分を上記第2の軸方向の壁の両端部分に相互接続する第1及び第2の横断方向の端壁を有し、上記くぼんだ区域が当該第1及び第2の軸方向の壁の上記両端部分間に位置することを特徴とする請求項17に記載の移植片。
- 上記各くぼんだ区域が上記横断方向の軸線に沿って内方に及び上記移植片本体の実質上全長に沿って延びる凹状の湾曲部を有することを特徴とする請求項17に記載の移植片。
- 上記軸方向の壁の上記少なくとも一方が、上記横断方向の軸線にほぼ沿って上記くぼんだ区域を外方へ膨張させるように、上記膨張形状への上記移植片本体の移行中に撓み変形することを特徴とする請求項1に記載の移植片。
- 上記移植片本体が内側の融合室を画定し、上記第1及び第2の軸方向の壁の各々が、そこを通って延び上記内側の融合室に連通する少なくとも1つの骨成長開口を画定し、
隣接する椎骨本体との融合を容易にするために上記内側の室内に位置する骨成長促進物質を更に有することを特徴とする請求項1に記載の移植片。 - 上記骨成長促進物質が骨形態タンパク質を含むことを特徴とする請求項21に記載の移植片。
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US11/117,816 | 2005-04-29 | ||
US11/117,816 US7749270B2 (en) | 2005-04-29 | 2005-04-29 | Expandable intervertebral implant and associated instrumentation |
PCT/US2006/015585 WO2006118867A1 (en) | 2005-04-29 | 2006-04-24 | Expandable intervertebral implant and associated instrumentation |
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