JPH08266564A - 除去した椎骨に代えて用いるインプラント - Google Patents
除去した椎骨に代えて用いるインプラントInfo
- Publication number
- JPH08266564A JPH08266564A JP8018968A JP1896896A JPH08266564A JP H08266564 A JPH08266564 A JP H08266564A JP 8018968 A JP8018968 A JP 8018968A JP 1896896 A JP1896896 A JP 1896896A JP H08266564 A JPH08266564 A JP H08266564A
- Authority
- JP
- Japan
- Prior art keywords
- implant
- elements
- outer element
- groove
- ribs
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- 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
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/30224—Three-dimensional shapes cylindrical
- A61F2002/30235—Three-dimensional shapes cylindrical tubular, e.g. sleeves
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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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30354—Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
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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
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
- A61F2002/30364—Rotation about the common longitudinal axis
- A61F2002/30367—Rotation about the common longitudinal axis with additional means for preventing said rotation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
- A61F2002/3037—Translation along the common longitudinal axis, e.g. piston
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- 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
- A61F2002/3039—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 with possibility of relative movement of the rib within the groove
- A61F2002/30398—Sliding
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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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- 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
- A61F2002/30403—Longitudinally-oriented cooperating ribs and grooves on mating lateral surfaces of a mainly longitudinal connection
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
- A61F2002/30485—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism plastically deformable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
- A61F2002/30487—Circumferential cooperating grooves and beads on cooperating lateral surfaces of a mainly longitudinal connection
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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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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- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
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- A61F2002/3052—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts unrestrained in only one direction, e.g. moving unidirectionally
-
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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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30518—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts
- A61F2002/3052—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts unrestrained in only one direction, e.g. moving unidirectionally
- A61F2002/30522—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts unrestrained in only one direction, e.g. moving unidirectionally releasable, e.g. using a releasable ratchet
-
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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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- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
- A61F2002/3055—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting length
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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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- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30593—Special structural features of bone or joint prostheses not otherwise provided for hollow
-
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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
- A61F2002/30594—Special structural features of bone or joint prostheses not otherwise provided for slotted, e.g. radial or meridian slot ending in a polar aperture, non-polar slots, horizontal or arcuate slots
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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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- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30601—Special structural features of bone or joint prostheses not otherwise provided for telescopic
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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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- A61F2002/30878—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
- A61F2002/30879—Ribs
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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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
-
- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
-
- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0069—Three-dimensional shapes cylindrical
Abstract
(57)【要約】
【課題】 構造簡単で迅速かつ安全に植込み可能な、失
われた椎骨に代えて用いるスペーサ機能のインプラント
を提供する。 【解決手段】 インプラントは互いに対して軸方向に調
整できかつ固定できる2つの素子1,2から成り、これ
ら素子は結合面上のかみ合い可能パターンによって一方
が他方に嵌合でき、それによってこれら素子が圧縮を妨
げ可能にするとともに伸延を可能にするように構成され
る。素子1,2は中空体であり、外素子1の内面は鋸歯
形のリング状溝を有し、内素子2はその一端上の鋸歯形
リブによって外素子1に結合できる。溝とリブは圧縮を
妨げるものの伸延を可能にする。軸方向スロット12が
内素子2の壁に形成され、それらと協働するスロット8
が外素子1の壁に形成される。素子1,2は開端と、こ
れら開端のうちの一方に挿入されるつめ7または基板6
を備えたプラグとを有する。
われた椎骨に代えて用いるスペーサ機能のインプラント
を提供する。 【解決手段】 インプラントは互いに対して軸方向に調
整できかつ固定できる2つの素子1,2から成り、これ
ら素子は結合面上のかみ合い可能パターンによって一方
が他方に嵌合でき、それによってこれら素子が圧縮を妨
げ可能にするとともに伸延を可能にするように構成され
る。素子1,2は中空体であり、外素子1の内面は鋸歯
形のリング状溝を有し、内素子2はその一端上の鋸歯形
リブによって外素子1に結合できる。溝とリブは圧縮を
妨げるものの伸延を可能にする。軸方向スロット12が
内素子2の壁に形成され、それらと協働するスロット8
が外素子1の壁に形成される。素子1,2は開端と、こ
れら開端のうちの一方に挿入されるつめ7または基板6
を備えたプラグとを有する。
Description
【0001】
【発明の属する技術分野】本発明は、失われた脊椎ない
し椎骨に代えて用いるためのスペーサとして働く植込片
すなわちインプラント(implant)であって、軸
方向に調整できる複数の素子から構成されているインプ
ラントに関する。
し椎骨に代えて用いるためのスペーサとして働く植込片
すなわちインプラント(implant)であって、軸
方向に調整できる複数の素子から構成されているインプ
ラントに関する。
【0002】
【発明が解決しようとする課題】脊柱に沿って椎骨に損
傷が生じた際または腫瘍が摘除された時は、骨組織から
の自家骨(移植片)、同種形成置換片および、または、
機械的植込スペーサを使用することが一般的慣行であ
る。
傷が生じた際または腫瘍が摘除された時は、骨組織から
の自家骨(移植片)、同種形成置換片および、または、
機械的植込スペーサを使用することが一般的慣行であ
る。
【0003】脊椎区域は、たとえ自家移植または同種形
成技術を用いるとしても自家移植片がその着床に多大の
時間を要し、椎骨に対して直ちに応力と圧力を加えるこ
とは不可能であるから、支持されかつ安定化されなくて
はならない。したがって、回復には相当な長さの時間が
必要である。
成技術を用いるとしても自家移植片がその着床に多大の
時間を要し、椎骨に対して直ちに応力と圧力を加えるこ
とは不可能であるから、支持されかつ安定化されなくて
はならない。したがって、回復には相当な長さの時間が
必要である。
【0004】そのような場合、普通はチタン網目シリン
ダが使用される。脊椎切除施術域に植込物質を包囲して
いる間、それが隣接脊椎を機械的に支持できるからであ
る。これらチタン網目シリンダは骨ねじおよび安定棒と
ともに使用されなくてはならず、網目シリンダの使用を
複雑にしかつ時間のかかるものにしている。
ダが使用される。脊椎切除施術域に植込物質を包囲して
いる間、それが隣接脊椎を機械的に支持できるからであ
る。これらチタン網目シリンダは骨ねじおよび安定棒と
ともに使用されなくてはならず、網目シリンダの使用を
複雑にしかつ時間のかかるものにしている。
【0005】もう一つの一般的方法は脊椎切除によって
生じた間隙を、長さ変更可能で一連のつめによって骨に
結合できるスペーサを用いて橋絡することである。スペ
ーサの長さは装置の両側において固定ねじにより調整さ
れなくてはならず、したがって手術間時のスペーサの使
用を長々しくする。
生じた間隙を、長さ変更可能で一連のつめによって骨に
結合できるスペーサを用いて橋絡することである。スペ
ーサの長さは装置の両側において固定ねじにより調整さ
れなくてはならず、したがって手術間時のスペーサの使
用を長々しくする。
【0006】したがって、本発明の目的は、失われた脊
椎に代えて用いるための極めて簡単な構造を有するイン
プラントであって、迅速に、簡単にかつ安全に植込まれ
得るインプラントを提供することである。
椎に代えて用いるための極めて簡単な構造を有するイン
プラントであって、迅速に、簡単にかつ安全に植込まれ
得るインプラントを提供することである。
【0007】
【課題を解決するための手段】本発明によるインプラン
トは互いに対して軸方向に調整可能かつ固定可能である
素子から成り、これら素子は結合面上のかみ合いパター
ン(patterns)によって一方が他方に嵌合でき
てこれら素子が圧縮を妨げることを可能にするとともに
伸延を可能にするように構成される。
トは互いに対して軸方向に調整可能かつ固定可能である
素子から成り、これら素子は結合面上のかみ合いパター
ン(patterns)によって一方が他方に嵌合でき
てこれら素子が圧縮を妨げることを可能にするとともに
伸延を可能にするように構成される。
【0008】好ましい一実施例によれば、素子は中空体
であり、外素子の内面が鋸歯形にされたリング状の溝を
備え、これによって薄壁から成る内素子が少なくともそ
の一端部に配列された鋸歯形のリブによって外素子に結
合でき、溝とリブが伸延を可能にするとともに圧縮を妨
げる。
であり、外素子の内面が鋸歯形にされたリング状の溝を
備え、これによって薄壁から成る内素子が少なくともそ
の一端部に配列された鋸歯形のリブによって外素子に結
合でき、溝とリブが伸延を可能にするとともに圧縮を妨
げる。
【0009】好ましくは、少なくとも2つの軸方向スロ
ットが内素子の壁にあってリブを設けられた端部から延
びており、外素子がスロットと協働する溝を設けられ
る。
ットが内素子の壁にあってリブを設けられた端部から延
びており、外素子がスロットと協働する溝を設けられ
る。
【0010】中空の素子は開いた端部と、これら開いた
端部のうちの一方に差込み可能な軸方向のつめまたは基
板を設けられたプラグとを有していてもよい。
端部のうちの一方に差込み可能な軸方向のつめまたは基
板を設けられたプラグとを有していてもよい。
【0011】別実施例によれば、中空素子の一端部は開
いていてもよく、他端部は軸方向のつめを有する基板を
設けられ得る。
いていてもよく、他端部は軸方向のつめを有する基板を
設けられ得る。
【0012】次に、添付図面を参照して実施例によって
本発明の細部を例として説明する。
本発明の細部を例として説明する。
【0013】
【発明の実施の形態】図1から図3に示す植込片すなわ
ちインプラントは、外素子1と内素子2から構成され、
これら素子はそれぞれシリンダ3,4から成っている。
外素子1の外面は円筒形であり、内円筒形面は複数のリ
ング形状の溝5を含む。これら溝5の横断面は鋸歯状で
あり、外素子1の上昇運動を可能にする。シリンダ3の
下端部には基板6があって、該基板6は複数のつめ7を
設けられている。シリンダ3の壁には2つの軸方向のス
ロット8が設けられ、これらスロット8は互いに向い合
っている。
ちインプラントは、外素子1と内素子2から構成され、
これら素子はそれぞれシリンダ3,4から成っている。
外素子1の外面は円筒形であり、内円筒形面は複数のリ
ング形状の溝5を含む。これら溝5の横断面は鋸歯状で
あり、外素子1の上昇運動を可能にする。シリンダ3の
下端部には基板6があって、該基板6は複数のつめ7を
設けられている。シリンダ3の壁には2つの軸方向のス
ロット8が設けられ、これらスロット8は互いに向い合
っている。
【0014】図2には内素子2が示されている。シリン
ダ4は基板9を設けられ、該基板9はその外面に複数の
つめ10を有する。内素子2の外円筒形面は底領域にリ
ブ11を設けられている。これらリブ11はやはり鋸歯
形状で、外素子1のリング形状の溝5によって受容され
得る。シリンダ4はシリンダ3より薄い壁から成ってい
て、そのほとんど全長に沿って軸方向のスロット12を
設けられている。シリンダ4のスロット12と薄壁は構
造の弾性化を可能にし、したがって、内素子2は外素子
1の内部に挿入され得る。鋸歯形状になった溝およびリ
ブの配列と弾性構造とによって、内素子2は外素子1か
ら外方へ動かされることができ、その間、内素子2のリ
ブ11は外素子1の溝5からポンと飛び出し、次いで溝
にポンと飛び戻る。このようにして、内素子と外素子は
可能性のあるすべての設定において圧縮に対抗して安定
化されるとともに、スペーサとしてのインプラントの圧
縮減し運動を可能にする。
ダ4は基板9を設けられ、該基板9はその外面に複数の
つめ10を有する。内素子2の外円筒形面は底領域にリ
ブ11を設けられている。これらリブ11はやはり鋸歯
形状で、外素子1のリング形状の溝5によって受容され
得る。シリンダ4はシリンダ3より薄い壁から成ってい
て、そのほとんど全長に沿って軸方向のスロット12を
設けられている。シリンダ4のスロット12と薄壁は構
造の弾性化を可能にし、したがって、内素子2は外素子
1の内部に挿入され得る。鋸歯形状になった溝およびリ
ブの配列と弾性構造とによって、内素子2は外素子1か
ら外方へ動かされることができ、その間、内素子2のリ
ブ11は外素子1の溝5からポンと飛び出し、次いで溝
にポンと飛び戻る。このようにして、内素子と外素子は
可能性のあるすべての設定において圧縮に対抗して安定
化されるとともに、スペーサとしてのインプラントの圧
縮減し運動を可能にする。
【0015】もし外素子1のスロット8と内素子2のス
ロット12がオーバラップ位置に在るならば、これらス
ロット内に楔を配置することによってそれらの位置を固
定することが可能である。
ロット12がオーバラップ位置に在るならば、これらス
ロット内に楔を配置することによってそれらの位置を固
定することが可能である。
【0016】したがって、植込みは、装置を完全に圧縮
してそれを脊椎切除施術域内に置き、これによって装置
が最も近い脊椎間に嵌合するようにして、達成できる。
一対のプライヤを使用することにより、内外両素子は隣
接脊椎が適正位置になるまで押し離される。
してそれを脊椎切除施術域内に置き、これによって装置
が最も近い脊椎間に嵌合するようにして、達成できる。
一対のプライヤを使用することにより、内外両素子は隣
接脊椎が適正位置になるまで押し離される。
【0017】このように、植込みは、手術時に大きな安
全性と容易性とをもって完遂され得る2つの簡単な過程
を必要とするにすぎない。必要ならば、内外両素子は既
に説明されたごとく楔で固定され得る。
全性と容易性とをもって完遂され得る2つの簡単な過程
を必要とするにすぎない。必要ならば、内外両素子は既
に説明されたごとく楔で固定され得る。
【0018】このインプラントが可能にする方法は、従
来用いた技法に比べて骨移植片の移植手順を簡単にす
る。何故ならば、調整可能の内外両素子は、いったん装
置の所望長さが設定されたならば、有害な運動によって
摺動または再調整できないので、安定化のための別個の
手技を必要としないからである。
来用いた技法に比べて骨移植片の移植手順を簡単にす
る。何故ならば、調整可能の内外両素子は、いったん装
置の所望長さが設定されたならば、有害な運動によって
摺動または再調整できないので、安定化のための別個の
手技を必要としないからである。
【0019】前記実施例は説明目的にすぎず、請求項に
記載の全範囲を決して限定しない。明らかに、本発明の
インプラントは他の幾つかの使用を想定して製作でき、
例えばつめは支持板のごとき他の要素によって代替され
得る。内外素子を構成するシリンダは、両端部が開いて
いて、支持板またはつめを備えたプラグを一方の端部に
差込み可能としてもよい。また、内外素子は円筒形以外
の他の形状、例えば矩形または他の形状であってもよ
い。
記載の全範囲を決して限定しない。明らかに、本発明の
インプラントは他の幾つかの使用を想定して製作でき、
例えばつめは支持板のごとき他の要素によって代替され
得る。内外素子を構成するシリンダは、両端部が開いて
いて、支持板またはつめを備えたプラグを一方の端部に
差込み可能としてもよい。また、内外素子は円筒形以外
の他の形状、例えば矩形または他の形状であってもよ
い。
【図1】本発明によるインプラントの外素子の断面図。
【図2】図1のインプラントの内素子の半断面図。
【図3】本発明によるインプラント全体の断面図。
1 外素子 2 内素子 3 シリンダ 4 シリンダ 5 溝 6 基板 7 つめ 8 スロット 9 基板 10 つめ 11 リブ 12 スロット
フロントページの続き (72)発明者 エルベ ディンビル フランス国サン − パレ − オゥ − テルトル,リュ ルネ コティ,4 (72)発明者 ジャン ウペール フランス国レトラ,ロランジェリー,86 (72)発明者 ティエリー マルネイ フランス国ニメ,モンテ ドゥ カーメル 16 (72)発明者 ミシェル ガウ フランス国サン ポール スル テルノワ ス,リュ ロスモン(番地なし)
Claims (5)
- 【請求項1】 互いに対して軸方向に調整可能かつ固定
可能である素子から成る、除去した椎骨に代えて用いる
インプラントにおいて、前記素子(1,2)は結合面上
のかみ合い可能パターンによって一方が他方に嵌合でき
て前記素子(1,2)が圧縮を妨げることを可能にする
とともに伸延を可能にするように構成されていることを
特徴とするインプラント。 - 【請求項2】 請求項1に記載のインプラントにおい
て、前記素子(1,2)は中空体で、外素子(1)の内
面が鋸歯形にされたリング状の溝(5)を備え、これに
よって薄壁から成る内素子(2)が少なくともその一端
部の外面に設けられた鋸歯形のリブ(11)によって前
記外素子(1)に結合可能であり、前記溝(5)と前記
リブ(11)が圧縮を妨げるとともに伸延を可能にする
インプラント。 - 【請求項3】 請求項1または2に記載のインプラント
において、少なくとも2つの軸方向スロット(12)が
前記内素子(2)の壁にあって、前記リブ(11)を設
けられた端部から延びており、前記外素子(1)が前記
スロットと協働する溝(5)を形成されているインプラ
ント。 - 【請求項4】 請求項1から3までのいずれか一項に記
載のインプラントにおいて、前記中空の素子(1,2)
が開いた端部と、前記開いた端部のうちの一方に差込ま
れた軸方向のつめ(7)または基板(6)を備えたプラ
グとを有するインプラント。 - 【請求項5】 請求項1から3までのいずれか一項に記
載のインプラントにおいて、前記中空の素子(1,2)
の一端部が開いていて、他端部が軸方向のつめを備えた
基板(9)を有するインプラント。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9501326 | 1995-02-06 | ||
FR9501326A FR2730158B1 (fr) | 1995-02-06 | 1995-02-06 | Dispositif de maintien d'un ecartement normal entre les vertebres et destine au remplacement de vertebres manquantes |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH08266564A true JPH08266564A (ja) | 1996-10-15 |
Family
ID=9475859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8018968A Pending JPH08266564A (ja) | 1995-02-06 | 1996-02-05 | 除去した椎骨に代えて用いるインプラント |
Country Status (5)
Country | Link |
---|---|
US (1) | US5723013A (ja) |
JP (1) | JPH08266564A (ja) |
KR (1) | KR960030899A (ja) |
DE (2) | DE19604246B4 (ja) |
FR (1) | FR2730158B1 (ja) |
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- 1995-02-06 FR FR9501326A patent/FR2730158B1/fr not_active Expired - Fee Related
-
1996
- 1996-02-05 JP JP8018968A patent/JPH08266564A/ja active Pending
- 1996-02-06 DE DE19604246A patent/DE19604246B4/de not_active Expired - Fee Related
- 1996-02-06 DE DE29623988U patent/DE29623988U1/de not_active Expired - Lifetime
- 1996-02-06 KR KR1019960002823A patent/KR960030899A/ko not_active Application Discontinuation
- 1996-02-06 US US08/595,955 patent/US5723013A/en not_active Expired - Fee Related
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JP2002532145A (ja) * | 1998-12-16 | 2002-10-02 | スダビー,ロウバート | 脊椎間融合用移植具とその工具 |
US9877840B2 (en) | 2008-09-04 | 2018-01-30 | DePuy Synthes Products, Inc. | Adjustable intervertebral implant |
US9314348B2 (en) | 2014-06-04 | 2016-04-19 | Wenzel Spine, Inc. | Bilaterally expanding intervertebral body fusion device |
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US10098756B2 (en) | 2014-06-04 | 2018-10-16 | Wenzel Spine, Inc. | Bilaterally expanding intervertebral body fusion device |
US10945857B2 (en) | 2014-06-04 | 2021-03-16 | Wenzel Spine, Inc. | Bilaterally expanding intervertebral body fusion device |
US11219531B2 (en) | 2019-04-10 | 2022-01-11 | Wenzel Spine, Inc. | Rotatable intervertebral spacing implant |
Also Published As
Publication number | Publication date |
---|---|
US5723013A (en) | 1998-03-03 |
FR2730158B1 (fr) | 1999-11-26 |
DE29623988U1 (de) | 2001-03-08 |
KR960030899A (ko) | 1996-09-17 |
DE19604246A1 (de) | 1996-08-08 |
DE19604246B4 (de) | 2006-06-01 |
FR2730158A1 (fr) | 1996-08-09 |
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