JPH0757229B2 - 人工関節間板 - Google Patents

人工関節間板

Info

Publication number
JPH0757229B2
JPH0757229B2 JP5005315A JP531593A JPH0757229B2 JP H0757229 B2 JPH0757229 B2 JP H0757229B2 JP 5005315 A JP5005315 A JP 5005315A JP 531593 A JP531593 A JP 531593A JP H0757229 B2 JPH0757229 B2 JP H0757229B2
Authority
JP
Japan
Prior art keywords
artificial joint
plate
spacing member
joint disc
tooth
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 - Lifetime
Application number
JP5005315A
Other languages
English (en)
Other versions
JPH06105856A (ja
Inventor
カリン、ビュットナー‐ヤンツ
ベルント、デア
クラウス‐ペーター、エルケル
ハンス‐ヨアヒム、ヘリシュ
クルト、シェルナク
ローラント、シューマン
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.)
Humboldt Universitaet zu Berlin
Original Assignee
Humboldt Universitaet zu Berlin
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 Humboldt Universitaet zu Berlin filed Critical Humboldt Universitaet zu Berlin
Publication of JPH06105856A publication Critical patent/JPH06105856A/ja
Publication of JPH0757229B2 publication Critical patent/JPH0757229B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/44Joints for the spine, e.g. vertebrae, spinal discs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/44Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/442Intervertebral or spinal discs, e.g. resilient
    • A61F2/4425Intervertebral or spinal discs, e.g. resilient made of articulated components
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30721Accessories
    • A61F2/30724Spacers for centering an implant in a bone cavity, e.g. in a cement-receiving cavity
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30003Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/3006Properties of materials and coating materials
    • A61F2002/3008Properties of materials and coating materials radio-opaque, e.g. radio-opaque markers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The 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
    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30383Connections 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
    • A61F2002/3039Connections 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
    • A61F2002/30398Sliding
    • A61F2002/304Sliding with additional means for limiting said sliding
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The 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
    • A61F2002/30535Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30604Special structural features of bone or joint prostheses not otherwise provided for modular
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30621Features concerning the anatomical functioning or articulation of the prosthetic joint
    • A61F2002/30639Features concerning the anatomical functioning or articulation of the prosthetic joint having rolling elements between both articulating surfaces
    • A61F2002/30642Features 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30621Features concerning the anatomical functioning or articulation of the prosthetic joint
    • A61F2002/30649Ball-and-socket joints
    • A61F2002/30663Ball-and-socket joints multiaxial, e.g. biaxial; multipolar, e.g. bipolar or having an intermediate shell articulating between the ball and the socket
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30841Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878Special 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
    • A61F2002/30891Plurality of protrusions
    • A61F2002/30892Plurality of protrusions parallel
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878Special 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
    • A61F2002/30891Plurality of protrusions
    • A61F2002/30894Plurality of protrusions inclined obliquely with respect to each other
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/44Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/442Intervertebral or spinal discs, e.g. resilient
    • A61F2/4425Intervertebral or spinal discs, e.g. resilient made of articulated components
    • A61F2002/443Intervertebral or spinal discs, e.g. resilient made of articulated components having two transversal endplates and at least one intermediate component
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2220/00Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2250/00Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/0096Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
    • A61F2250/0098Markers 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2310/00Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005The prosthesis being constructed from a particular material
    • A61F2310/00011Metals or alloys
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2310/00Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005The prosthesis being constructed from a particular material
    • A61F2310/00179Ceramics or ceramic-like structures

Description

【発明の詳細な説明】
【0001】
【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質(pulposus)の
核の多分割構造の人工補装体に関する。
【0002】
【従来の技術】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質をその
場所で重合されるシリコンゴムで充填することによって
代用することは既に知られている。また米国特許第43
49921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っている金
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2263
842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89
5433号で知られている。
【0003】
【発明が解決しようとする課題】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
比べて非常に硬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い必要な
保持が得られないことから生ずる。
【0004】本発明の目的は、対応する脊柱における間
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って、位置変
化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。
【0005】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。
【0006】
【課題を解決するための手段】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
るい間隔部材から構成されていることによって達成でき
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。
【0007】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。
【0008】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るため
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。
【0009】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
基板のできるだけ大きな面を受けるように決められる。
それによっ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) 材料かに成る
板で充填することによっ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。
【0010】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(低摩擦によっ
て)破片を最少にするために接触面が高研磨されてるい
る。
【0011】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。
【0012】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ッチ面であり、これらの面は
一方の関節結合範囲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。
【0013】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り位置に応じて
4つの異なった実施形態で作られる。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。
【0014】なお2個の対称な閉鎖板がその中央部分が
凸面状に形成され、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口関節間板も考えら
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(Kaltflu
ss) を避けるか制限するために、固いブッシュが設けら
れる。このブッシュの高さは、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。
【0015】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
は人口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。
【0016】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。
【0017】本発明により初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。
【0018】
【実施例】以下図面に示す実施例に基づいて本発明を詳
細に説明する。 実施例1(図1〜図3) 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。係止な緻密な実施例にお
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。脊椎体の脊椎柱前彎を保持
するために折り曲げ部に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の曲率に確実に対応している。間隔部
材は同様に環状の平な案内縁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
は生理的に合っ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。
【0019】実施例2(図4〜図5) 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。この平面的に広が
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。
【0020】平らな案内縁2の下側の中空室は異形塑性
材料かに成る板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っている材料で作
られている。
【0021】実施例3(図6) 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の曲率な脊椎体基板ないし脊椎体蓋板の曲率
に対応される。
【0022】実施例4(図7〜図8) 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とから成っ
ている。間隔部材12の上側面と下側面および閉鎖板1
1の隣接面は、互いに関節結合する部分と同じ曲率をし
たシリンダのピッチ面に対応し、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。すなわち、
2個の閉鎖板11とこれらの間に介在される間隔部材1
2とから成る人工関節間板において、間隔部材12の上
側面とこの上側面に対向する閉鎖板11の隣接面とは第
1軸を軸線とする互いに整合する円筒面であって互いに
第1軸の回りに回転可能な運動面を形成し、間隔部材1
2の下側面とこの下側面に対向する閉鎖板11の隣接面
とは第2軸を軸線とする互いに整合する円筒面であって
互いに第2軸の回りに回転可能な運動面を形成し、第1
軸及び第2軸は互いに直交するとともに閉鎖板11と間
隔部材12の配列方向に直交するようになっている。
【0023】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。
【0024】実施例5(図9〜図10) 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13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。
【0025】実施例6(図11および図13) 人工関節間板は凸面閉鎖板16および凹面状端部17を
持ったシリンダ状間隔部材から成っている。間隔部材は
固いブッシュ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、ブッシュ18の高さは間隔部材より低くされてい
る。
【0026】実施例7(図12) 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の直径はヒ
ン19の直径より大きい。
【0027】実施例8(図14) 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2
1を有している。
【図面の簡単な説明】
【図1】aは閉鎖板の側面図、bは閉鎖板を180°回
転した状態の断面図。
【図2】間隔部材の断面図。
【図3】閉鎖板の平面図。
【図4】横の広がり部を持った閉鎖板の断面図(図5の
A−A線に沿う断面図)、aは図のB−Bに沿う断面
図。
【図5】横側の広がり部をもった閉鎖板の平面図。
【図6】緻密な閉鎖板の平面図、aは図のC−C線に沿
う断面図。
【図7】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。
【図8】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。
【図9】保持ピンと円形凹所を持った人工関節間板の側
面図、aは図のD−D線に沿う部分断面図。
【図10】保持ピンと溝状凹所とを持った人工関節間板
の側面図、aは図のE−E線に沿う部分断面図。
【図11】凸面閉鎖板および両端が凹面のシリンダ状間
隔部材を持った人工関節間板の側面図。
【図12】保持ピンを持った図11に相応した人工関節
間板の断面図。
【図13】シリンダ状間隔部材の図11におけるF−F
線に沿う断面図。
【図14】横川広がり部を持った図11に相応した人工
関節間板の平面図。
【符号の説明】
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 横川広がり部 8 異形塑性材料から成る板 9 緻密な閉鎖板 10 環状溝 11 シリンダ状運動面を持った閉鎖板 12 シリンダ状運動面を持った間隔部材 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 ブッシュ 19 ピン 20 凹所 21 横側広がり部を持った凸面閉鎖板
フロントページの続き (72)発明者 クラウス‐ペーター、エルケル ドイツ民主共和国8020、ドレスデン、ルー トビヒ‐レン‐アレー、19 (72)発明者 ハンス‐ヨアヒム、ヘリシュ ドイツ民主共和国1144、ベルリン、ウルメ ンシュトラーセ、64/66 (72)発明者 クルト、シェルナク ドイツ民主共和国102、ベルリン、イイエ、 ブルーメンシュトラーセ、20 (72)発明者 ローラント、シューマン ドイツ民主共和国8027、ドレスデン、ロー テンバヒェル、シュトラーセ、9

Claims (18)

    【特許請求の範囲】
  1. 【請求項1】2個の閉鎖板とこれらの間に介在される間
    隔部材とから成る人工関節間板において、間隔部材(1
    2)の上側面とこの上側面に対向する閉鎖板(11)の
    隣接面とは第1軸を軸線とする互いに整合する円筒面で
    あって互いに第1軸の回りに回転可能な運動面を形成
    し、間隔部材(12)の下側面とこの下側面に対向する
    閉鎖板(11)の隣接面とは第2軸を軸線とする互いに
    整合する円筒面であって互いに第2軸の回りに回転可能
    な運動面を形成し、第1軸及び第2軸は互いに直交する
    とともに閉鎖板(11)と間隔部材(12)の配列方向
    に直交することを特徴とする人工関節間板。
  2. 【請求項2】間隔部材(12)が頭蓋側および尾側に延
    びるピン(13)を備え、このピン(13)がそれより
    大きな直径の円形凹所(14)あるいは溝状凹所(1
    5)に係合することを特徴とする請求項1記載の人工関
    節間板。
  3. 【請求項3】閉鎖板(11)がピン(13)を備え、間
    隔部材(12)が円形凹所(14)あるいは溝状の凹所
    (15)を有していることを特徴とする請求項1または
    2に記載の人工関節間板。
  4. 【請求項4】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
    ことを特徴とする請求項1ないし3のいずれかに記載の
    人工関節間板。
  5. 【請求項5】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請求項1ないし4のいずれかに
    記載の人工関節間板。
  6. 【請求項6】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っ張りに強い医
    療ポリエチレンで作られていることを特徴とする請求項
    1ないし5のいずれかに記載の人工関節間板。
  7. 【請求項7】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ッ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請求項1ないし6のい
    ずれかに記載の人工関節間板。
  8. 【請求項8】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請求項1に記載の人工関節間板。
  9. 【請求項9】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請求項8記載の人工関節間板。
  10. 【請求項10】2個の閉鎖板とこれらの間に介在される
    間隔部材とから成る人工関節間板において、シリンダ状
    の間隔部材(17)が凹面状に形成された端部を有し耐
    圧ブッシュ(18)で取り囲まれており、閉鎖板(1
    6)が凸面状をし間隔部材(17)の反対側に歯(3)
    を備えることを特徴とする人工関節間板。
  11. 【請求項11】凸面および凹面の曲率が同じであること
    を特徴とする請求項10に記載の人工関節間板。
  12. 【請求項12】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請求項10ないし11のいずれかに
    記載の人工関節間板。
  13. 【請求項13】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請求項10ないし12のいず
    れかに記載の人工関節間板。
  14. 【請求項14】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っ張りに強い医
    療ポリエチレンで作られていることを特徴とする請求項
    10ないし13のいずれかに記載の人工関節間板。
  15. 【請求項15】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ッ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請求項10ないし1
    4のいずれかに記載の人工関節間板。
  16. 【請求項16】閉鎖板が側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請求項10
    に記載の人工関節間板。
  17. 【請求項17】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請求項10に記載の人工関節間
    板。
  18. 【請求項18】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請求項17記載の人工関節間板。
JP5005315A 1984-09-04 1993-01-14 人工関節間板 Expired - Lifetime JPH0757229B2 (ja)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DD26695984A DD248018A3 (de) 1984-09-04 1984-09-04 Bandscheibenendoprothese
DD27319285A DD234609B1 (de) 1985-02-12 1985-02-12 Abschlussplatte fuer eine mehrteilige endoprothese des nucleus pulposus
DE61F/273192-6 1985-07-19
DE61F/266959-0 1985-07-19
DD27879285A DD239523B3 (de) 1985-07-19 1985-07-19 Bandscheibenendoprothese
DE61F/278793-2 1985-07-19
DD27879385A DD239524B3 (de) 1985-07-19 1985-07-19 Bandscheibenendoprothese
DE61F/278792-4 1985-07-19

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP60194012A Division JPS61122859A (ja) 1984-09-04 1985-09-04 人工関節間板

Publications (2)

Publication Number Publication Date
JPH06105856A JPH06105856A (ja) 1994-04-19
JPH0757229B2 true JPH0757229B2 (ja) 1995-06-21

Family

ID=27430229

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Application Number Title Priority Date Filing Date
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Application Number Title Priority Date Filing Date
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Country Status (6)

Country Link
US (1) US4759766A (ja)
EP (1) EP0176728B1 (ja)
JP (2) JPS61122859A (ja)
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US4759766A (en) 1988-07-26
DE3529761A1 (de) 1986-07-03
JPH06105856A (ja) 1994-04-19
ATE44871T1 (de) 1989-08-15
EP0176728B1 (de) 1989-07-26
JPS61122859A (ja) 1986-06-10
DE3529761C2 (de) 1994-06-16
JPH0552218B2 (ja) 1993-08-04
EP0176728A1 (de) 1986-04-09
CA1263201A (en) 1989-11-28

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