JPH0552218B2 - - Google Patents

Info

Publication number
JPH0552218B2
JPH0552218B2 JP85194012A JP19401285A JPH0552218B2 JP H0552218 B2 JPH0552218 B2 JP H0552218B2 JP 85194012 A JP85194012 A JP 85194012A JP 19401285 A JP19401285 A JP 19401285A JP H0552218 B2 JPH0552218 B2 JP H0552218B2
Authority
JP
Japan
Prior art keywords
disc
plate
spacing member
artificial
interarticular
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
Application number
JP85194012A
Other languages
English (en)
Other versions
JPS61122859A (ja
Inventor
Byutsutonaa Yantsu Karin
Dea Berunto
Erukeru Kurausuupeetaa
Herishu Hansuuyoahimu
Sherunaku Kuruto
Shuuman Rooranto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FUNBORUTO UNIBERUJITEETO TSUU
Original Assignee
FUNBORUTO UNIBERUJITEETO TSUU
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DD26695984A external-priority patent/DD248018A3/de
Priority claimed from DD27319285A external-priority patent/DD234609B1/de
Priority claimed from DD27879285A external-priority patent/DD239523B3/de
Priority claimed from DD27879385A external-priority patent/DD239524B3/de
Application filed by FUNBORUTO UNIBERUJITEETO TSUU filed Critical FUNBORUTO UNIBERUJITEETO TSUU
Publication of JPS61122859A publication Critical patent/JPS61122859A/ja
Publication of JPH0552218B2 publication Critical patent/JPH0552218B2/ja
Granted legal-status Critical Current

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
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/442—Intervertebral or spinal discs, e.g. resilient
    • A61F2/4425—Intervertebral or spinal discs, e.g. resilient made of articulated components
    • 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
    • A61F2/30721—Accessories
    • A61F2/30724—Spacers for centering an implant in a bone cavity, e.g. in a cement-receiving cavity
    • 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
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/3006—Properties of materials and coating materials
    • A61F2002/3008—Properties of materials and coating materials radio-opaque, e.g. radio-opaque markers
    • 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
    • A61F2002/3039—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
    • A61F2002/304—Sliding with additional means for limiting said sliding
    • 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
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
    • 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
    • A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
    • A61F2002/30639—Features concerning the anatomical functioning or articulation of the prosthetic joint having rolling elements between both articulating surfaces
    • A61F2002/30642—Features concerning the anatomical functioning or articulation of the prosthetic joint having rolling elements between both articulating surfaces having a single rolling (or sliding) ball articulating between two cups
    • 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
    • A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
    • A61F2002/30649—Ball-and-socket joints
    • A61F2002/30663—Ball-and-socket joints multiaxial, e.g. biaxial; multipolar, e.g. bipolar or having an intermediate shell articulating between the ball and the socket
    • 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
    • A61F2/30767—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
    • A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
    • 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
    • A61F2/30767—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
    • A61F2002/30891—Plurality of protrusions
    • A61F2002/30892—Plurality of protrusions parallel
    • 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
    • A61F2/30767—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
    • A61F2002/30891—Plurality of protrusions
    • A61F2002/30894—Plurality of protrusions inclined obliquely with respect to each other
    • 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
    • A61F2/442—Intervertebral or spinal discs, e.g. resilient
    • A61F2/4425—Intervertebral or spinal discs, e.g. resilient made of articulated components
    • A61F2002/443—Intervertebral or spinal discs, e.g. resilient made of articulated components having two transversal endplates and at least one intermediate component
    • 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
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
    • A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers
    • 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
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • 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
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00179—Ceramics or ceramic-like structures

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Neurology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Cardiology (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、隣接する２個の脊椎体の基板と蓋板
との間に挿入されるパルプ室（pulposus）の核の
多分割構造の人工補装体に関する。
〔従来技術と問題点〕
退化、損傷あるいは破損した関節間板を交換す
るか少なくとも補充しようとする一連の装置が知
られている。米国特許第4401112号明細書には圧
力支持を保証するだけで、生理的な運動なしに治
癒する装置が記載されている。病理的に変形した
関節間板を、パルプ質の核を手術で除去した後に
生ずる中空室をその場所で重合されるシリコンゴ
ムで充填することによつて代理することは既に知
られている。また米国特許第4349921号明細書に
は木くぎ状の人工関節間板が記載されている。上
側部分と下側部分と両者の間の押しボタン状、円
盤状あるいは球状の中間部材から成つている金属
製、金属−合成樹脂製あるいは合成樹脂製の多分
割構造の人工関節間板も知られている（ドイツ連
邦共和国特許第3023353号明細書、同国公開特許
第2263842号明細書、スイス特許第624575号明細
書、同第640131号明細書参照）。特殊な構造が米
国特許第4309777号明細書およびソ連発明者証第
895433号で知られている。
これらの周知の装置は、パルプ質の核の機能が
部分的にしか代用されないか、十分に代用できな
いという欠点を有している。脊椎体のスポンジ質
への軸受面の加工は、一部で患者に長い処置を必
要とするという欠点を有している。更にスポンジ
質に比べて非常に固い脊椎体の外側層が破損され
るか、孔があけられることは望ましくない。大き
な接触荷重、不均一な圧力分布およびないし材料
の不撓性により、懐死や骨吸収の危険があるばか
りでなく、脊椎体を機械的に破損する危険もあ
る。別の問題は実施する手術、および人工関節間
板を使用する場合の位置変化に関する必要な保持
が得られないことから生ずる。
〔発明の目的〕
本発明の目的は、対応する脊椎における間隔保
持ないし間隔の回復および生理的な運動を保証す
るようなパルプ質の核のできるだけ価値ある人工
補装体を作ることにある。更に長い採用時間にわ
たつて、位置変位をできる限り防止した状態で機
能を保証しようとするものである。
本発明の課題は、生化学および生物機械的な許
容誤差を有し、圧力を受ける際に形状が安定し、
隣接する脊椎体の大きな加工を必要とせずに採用
でき、隣接する脊椎体の機械的な損傷を防止する
ようなパルプ質の核の人工補装体を作ることにあ
る。
〔発明の概要および効果〕
本発明によればこの課題は、人工関節間板が２
個の閉鎖板およびこれらの間にある間隔部材から
構成されていることによつて達成できる。閉鎖板
と間隔部材はその協働作用においてほぼ生理学的
に脊椎体に近づけることができる。
第１の実施形態において間隔部材は部分的に球
面を有し、レンズ状に形成され、平らな案内縁を
有し、閉鎖板からの滑り落ちや脱落を防止するた
めに外側に環状突起を備えている。間隔部材の高
さは椎間室の高さに応じて変化される。
対称な閉鎖板はその中央が凹面に形成され、同
様に平らな案内縁を有し、折り曲げ部に続いて歯
を備えている。閉鎖板の折り曲げは矢状の脊柱湾
曲に相応して行われるので、椎間室の腹側および
背側の高さの違いを考慮できる。簡単な内部手術
の方向づけのために、腹側のマークが用いられ
る。凹面の曲率は間隔部材の球面部分の曲率に正
確に対応している。
閉鎖板の両側面に平面的な広がり部を設けるこ
とができ、この広がり部は脊椎体基板ないし脊椎
体蓋板のできるだけ大きな面を受けるように決め
られる。それによつて単位面積当たりの圧力荷重
が減少される。加えてあるいは別個に閉鎖板の支
持面を、凹面中央部分の背面と折り曲げられた案
内縁との間の中空室を生物的に活性である異形塑
性（alloplastischem）材料から成る板で充填す
ることによつて拡大することができる。骨セメン
トの使用も同様に考えられる。閉鎖板の中央部分
を緻密に、即ち背面に中空室なしに作ることもで
きる。
また閉鎖板全体に緻密な材料を使用することも
できる。そのために脊椎体基板ないし脊椎体蓋板
が接する緻密な閉鎖板に、凹面中央部分および間
隔部材の環状突起を収容する環状溝が加工され
る。閉鎖板および間隔部材は移植技術で定評のあ
る材料で作られ、例えば閉鎖板は錆びない金属で
作られ、間隔部材は引張りおよび圧縮に強い医療
用ポリエチレンあるいはポリウレタンで作られ
る。その逆に材料を組み合わせることも考えられ
る。生物的に活性である別の異形塑性材料を使用
することもできる。閉鎖板並びに間隔部材は（低
摩擦によつて）破片を最少にするために接触面が
高研磨されている。
椎間室における確実な移植係止に対して、閉鎖
板の下側面における縁部固定歯およびないし平面
的な歯が用いられる。歯あるいは閉鎖板下側面全
体を生物活性的に被覆することができる。また閉
鎖板を骨セメントで係止することもできる。
間隔部材の上側面と下側面および閉鎖板の隣接
する面がシリンダのピツチ面であり、これらの面
は一方の関節結合範囲から他方の関節結合範囲に
対して90°だけ回転されている。。閉鎖板は円形あ
るいはほぼ楕円形をし、間隔部材はそれに対して
対称的で小さい。
低摩擦原理で作用する人工関節間板は、凹面あ
るいは凸面状に湾曲された運動平面の位置に応じ
て４つの異なつた実施形態が作られる。人工関節
間板は椎間室の頭蓋側から尾側および腹側から背
側への延びに応じて高さが変化できるように形成
できる。中央部分の望ましくない位置変化を補助
的に防止するために、そこに頭蓋側および尾側に
延びる中央ピンを設けることができる。このピン
は閉鎖板に加工された凹所に係合する。その凹所
は好ましくは円形あるいは溝状に形成される。逆
に閉鎖板にピンを設け、中央部分に凹所を設ける
こともできる。この実施形態において荷重された
際、２つの運動範囲のうちの１つにおいて転がり
運動が行われ、他の運動範囲において連行滑り運
動が行われ、その場合間隔部材は運動過程中にそ
の位置が変化し、閉鎖板は脊椎体において例えば
歯を介して安定して係止されたままである。
なお２個の対称な閉鎖板がその中央部分が凸面
状に形成れ、間隔部材がシリンダ状に形成されそ
の両端が凹面状に形成されている人工関節間板も
考えられる。その場合凹面および凸面の曲率は同
じである。ポリウレタンで作られたシリンダ状の
間隔部材には、大きな圧縮荷重の影響で生ずるポ
リウレタンの冷流（Kaltfluss）を避けるか制限
するために、固いブツシユが設けられる。このブ
ツシユの高さは、閉鎖板との直接接触を防止する
ために、間隔部材より低く決められる。
閉鎖板の凸面中央部分に補助的に間隔部材の凹
所に係合するピンを設けることもできる。この凹
所の直径はピンの直径より大きく決められる。か
かる構造は人工関節間板の最大運動を制限し、間
隔部材の無視できない位置変化を確実に防止す
る。
Ｘ線で表示するためにさもなければ見えない合
成樹脂部品に相応したマークが付けられる。
本発明により始めてパルプ質の核のほぼ完全な
代用品が得られ、対応する脊柱部分において生理
的な運動を保証できる。
〔実施例〕
以下図面に示す実施例に基いて本発明を詳細に
説明する。
実施例１ （第１図〜第３図） 閉鎖板は錆びない金属で作られ、凹面状に形成
された中央部分１と環状の平らな案内縁２とを有
している。閉鎖板の折り曲げられた縁には、脊椎
体への確実な係止を保証する歯３が設けられてい
る。係止は緻密な実施例における縁歯、平面的な
歯あるいは骨セメントで行える。係止は生物学的
に活性である。脊椎体の脊柱前彎を保持するため
に折り曲げ部の前方縁は後方縁よりも高い。間隔
部材は凸面状の中央部分４を有し、その曲率は閉
鎖板の凹面中央部分１の曲率に正確に対応してい
る。間隔部材は同様に環状の平らな案内縁５を備
え、滑り落ちを防止するために環状突起６を有し
ている。間隔部材の高さは椎間空間の個々の条件
に対応して形成される。間隔部材は生理的に合つ
ている材料で作られ、閉鎖板と同様に破片を最少
にするために高研磨されている。間隔部材はＸ線
で識別できるマークが付けられる。
実施例２ （第４図〜第５図） 閉鎖板は実施例１に記載したものと同様である
が、両側に平面的な広がり部７を備えている。こ
の平面的な広がり部７は脊椎体基板ないし脊椎体
蓋板の曲率に合わされる。
平らな案内縁２の下側に中空室は異形塑性材料
から成る板８で充填されている。この中空室は骨
セメントで充填したり、始めから緻密な中央部分
を使用することもできる。閉鎖板は生理的に合つ
ている材料で作られている。
実施例３ （第６図） 多分割構造の人工関節間板の閉鎖板はいわゆる
緻密な閉鎖板９として形成されている。この閉鎖
板９には凹面中央部分１および環状溝１０が加工
され、両者の間に案内縁２が設けられている。同
様に歯３が設けられている。緻密な閉鎖板９の曲
率は脊椎体基板ないし脊椎体蓋板の曲率に対応さ
れる。
実施例４ （第７図〜第８図） 人工関節間板は円周が同じほぼ楕円形あるいは
円形の閉鎖板１１とこれと対称な小さな間隔部材
１２とから成つている。間隔部材１２の上側面と
下側面および閉鎖板１１の隣接面は、互いに関節
結合する部分と同じ曲率をしたシリンダのピツチ
面に対応し、これらはその運動平面において互い
に90°だけ回転されている。
この人工関節間板の機能において、一方の運動
範囲において転がり運動が行われ、他方の運動範
囲において連行滑り運動が行われ、その場合運動
工程中において間隔部材はその位置が変化し、閉
鎖板は脊椎体に安定して係止されたままである。
実施例５ （第９図〜第１０図） 人工関節間板は実施例４と同様に形成されてい
るが、これは円形凹所１４あるいは溝状凹所１５
に係合する頭蓋側および尾側に延びる中央ピン１
３を有している。ピン１３と凹所１４，１５を逆
に配置することもできる。
実施例６ （第１１図および第１３図） 人工関節間板は凸面閉鎖板１６および凹面状端
部１７を持つたシリンダ状間隔部材から成つてい
る。間隔部材は固いブツシユ１８で取り囲まれて
いる。凸面および凹面の曲率は同じである。閉鎖
板との接触を防止するために、ブツシユ１８の高
さは間隔部材より低くされている。
実施例７ （第１２図） 人工関節間板は実施例６と同様に形成されてい
るが、凸面閉鎖板１６は円形凹所２０に係合する
頭蓋側ないし尾側に向いたピン１９を有してい
る。凹所２０の直径はピン１９の直径より大き
い。
実施例８ （第１４図） 人工関節間板は実施例６あるいは実施例７と同
様に形成されているが、凸面閉鎖板１６は両側に
横側広がり部２１を有している。
【図面の簡単な説明】
第１ａ図は閉鎖板の側面図、第１ｂ図は閉鎖板
を180°回転した状態の断面図、第２図は間隔部材
の断面図、第３図は閉鎖板の平面図、第４図は横
の広がり部を持つた閉鎖板の断面図（第５図のＡ
−Ａ線に沿う断面図）、第４ａ図は第４図のＢ−
Ｂに沿う断面図、第５図は横側の広がり部を持つ
た閉鎖板の平面図、第６図は緻密な閉鎖板の平面
図、第６ａ図は第６図のＣ−Ｃ線に沿う断面図、
第７図は90°だけ回転された運動平面における人
工関節間板の側面図、第８図は90°だけ回転され
た運動平面における人工関節間板の側面図、第９
図は保持ピンと円形凹所を持つた人工関節間板の
側面図、第９ａ図は第９図のＤ−Ｄ線に沿う部分
断面図、第１０図は保持ピンと溝状凹所とを持つ
た人工関節間板の側面図、第１０ａ図は第１０図
のＥ−Ｅ線に沿う部分断面図、第１１図は凸面閉
鎖板および両端が凹面のシリンダ状間隔部材を持
つた人工関節間板の側面図、第１２図は保持ピン
を持つた第１１図に相応した人工関節間板の断面
図、第１３図はシリンダ状間隔部材の第１１図に
おけるＦ−Ｆ線に沿う断面図、第１４図は横側広
がり部を持つた第１１図に相応した人工関節間板
の平面図である。 １……閉鎖板の凹面中央部分、２……閉鎖板の
案内縁、３……歯、４……間隔部材の凸面中央部
分、５……間隔部材の案内縁、６……環状突起、
７……横側広がり部、８……異形塑性材料から成
る板、９……緻密な閉鎖板、９……環状溝、１１
……シリンダ状運動面を持つた閉鎖板、１２……
シリンダ状運動面を持つた間隔部材、１３……ピ
ン、１４……円形凹所、１５……溝状凹所、１６
……凸面閉鎖板、１７……シリンダ状間隔部材、
１８……ブツシユ、１９……ピン、２０……凹
所、２１……横側広がり部を持つた凸面閉鎖板。

Claims (1)

  1. 【特許請求の範囲】 １ ２個の対称な閉鎖板と間隔部材とから成る人
    工関節間板において、 閉鎖板は間隔部材に会合する表面を有し、この
    表面には凹面状に形成された中央部分１とこの中
    央部分１の回りの環状の平らな案内縁２が設けら
    れており、この案内縁２の外側縁は折り曲げられ
    歯３を有し、 対応する各々の間隔部材は凸面中央部分４とこ
    の凸面中央部分４の回りの平らな環状案内縁５を
    有し、 この環状案内縁５は環状突起６を有して閉鎖板
    の一部を囲み、これによつて閉鎖板の間から間隔
    部材が抜けることを防止し、 閉鎖板の凹面中央部分１の曲率が間隔部材の凸
    面中央部分４の曲率に相等しく、各閉鎖板と間隔
    部材とが互いに係合して各閉鎖板と間隔部材との
    間に人工関節を形成することを特徴とする人工関
    節間板。 ２ 前方縁における閉鎖板の外側縁の折り曲げが
    後方縁におけるより高いことを特徴とする特許請
    求の範囲第１項の人工関節間板。 ３ 平らな案内縁２の下側の中空室を異形塑性材
    料から成る板８およびないし骨セメントで充填す
    るか、緻密な中央部分を用いることを特徴とする
    特許請求の範囲第１項ないし第２項のいずれかに
    記載の人工関節間板。 ４ 緻密な閉鎖板９に凹面中央部分１および環状
    溝１０が加工され、両者の間に案内縁２が設けら
    れていることを特徴とする特許請求の範囲第１項
    ないし第２項のいずれかに記載の人工関節間板。 ５ 椎間室の頭蓋側から尾側および腹側から背側
    の膨張に相応して高さ変化するように形成されて
    いることを特徴とする特許請求の範囲第１項ない
    し第４項のいずれかに記載の人工関節間板。 ６ 合成樹脂がＸ線で識別でいるマークを有して
    いることを特徴とする特許請求の範囲第１項ない
    し第５項のいずれかに記載の人工関節間板。 ７ 閉鎖板が好ましくは錆びない金属で作られ、
    間隔部材が好ましくは圧縮および引つ張りに強い
    医療ポリエチレンで作られていることを特徴とす
    る特許請求の範囲第１項ないし第６項のいずれか
    に記載の人工関節間板。 ８ 閉鎖板並びに間隔部材に対し異形塑性材料例
    えば生物学的に活性のセラミツクあるいはポリウ
    レタンが用いられることを特徴とする特許請求の
    範囲第１項ないし第７項のいずれかに記載の人工
    関節間板。 ９ 閉鎖板が両側面に平面状に広がり部７，２１
    を備えていることを特徴とする特許請求の範囲第
    １項に記載の人工関節間板。 １０ 歯３が縁固定歯であるか平面的な歯である
    ことを特徴とする特許請求の範囲第１項に記載の
    人工関節間板。 １１ 歯３およびないし関節板の脊椎体基板ない
    し脊椎体蓋板の側が生物学的に活性に被覆されて
    いることを特徴とする特許請求の範囲第１０項記
    載の人工関節間板。
JP60194012A 1984-09-04 1985-09-04 人工関節間板 Granted JPS61122859A (ja)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DD26695984A DD248018A3 (de) 1984-09-04 1984-09-04 Bandscheibenendoprothese
DD61F/266959-0 1984-09-04
DD27319285A DD234609B1 (de) 1985-02-12 1985-02-12 Abschlussplatte fuer eine mehrteilige endoprothese des nucleus pulposus
DD61F/273192-6 1985-02-12
DD27879285A DD239523B3 (de) 1985-07-19 1985-07-19 Bandscheibenendoprothese
DD61F/278792-4 1985-07-19
DD61F/278793-2 1985-07-19
DD27879385A DD239524B3 (de) 1985-07-19 1985-07-19 Bandscheibenendoprothese

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP5005315A Division JPH0757229B2 (ja) 1984-09-04 1993-01-14 人工関節間板

Publications (2)

Publication Number Publication Date
JPS61122859A JPS61122859A (ja) 1986-06-10
JPH0552218B2 true JPH0552218B2 (ja) 1993-08-04

Family

ID=27430229

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Application Number Title Priority Date Filing Date
JP60194012A Granted JPS61122859A (ja) 1984-09-04 1985-09-04 人工関節間板
JP5005315A Expired - Lifetime JPH0757229B2 (ja) 1984-09-04 1993-01-14 人工関節間板

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP5005315A Expired - Lifetime JPH0757229B2 (ja) 1984-09-04 1993-01-14 人工関節間板

Country Status (6)

Country Link
US (1) US4759766A (ja)
EP (1) EP0176728B1 (ja)
JP (2) JPS61122859A (ja)
AT (1) ATE44871T1 (ja)
CA (1) CA1263201A (ja)
DE (1) DE3529761C2 (ja)

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JPH0757229B2 (ja) 1995-06-21
US4759766A (en) 1988-07-26
EP0176728B1 (de) 1989-07-26
EP0176728A1 (de) 1986-04-09
DE3529761C2 (de) 1994-06-16
ATE44871T1 (de) 1989-08-15
JPS61122859A (ja) 1986-06-10
DE3529761A1 (de) 1986-07-03
JPH06105856A (ja) 1994-04-19
CA1263201A (en) 1989-11-28

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