KR900701331A - 이식제와 그의 제조방법 - Google Patents

이식제와 그의 제조방법

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KR900701331A
KR900701331A KR1019900700291A KR900700291A KR900701331A KR 900701331 A KR900701331 A KR 900701331A KR 1019900700291 A KR1019900700291 A KR 1019900700291A KR 900700291 A KR900700291 A KR 900700291A KR 900701331 A KR900701331 A KR 900701331A
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tissue
implant
support
mixture
compatible
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KR1019900700291A
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KR970011447B1 (ko
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라르스 브루스
인그리드 브루스
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에비 이데아
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
    • A61L27/3604—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix characterised by the human or animal origin of the biological material, e.g. hair, fascia, fish scales, silk, shellac, pericardium, pleura, renal tissue, amniotic membrane, parenchymal tissue, fetal tissue, muscle tissue, fat tissue, enamel
    • A61L27/3608—Bone, e.g. demineralised bone matrix [DBM], bone powder
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
    • A61C8/0013—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy with a surface layer, coating
    • 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
    • A61F2/28—Bones
    • 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
    • A61F2/30756—Cartilage endoprostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/28—Materials for coating prostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
    • A61L27/3641—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix characterised by the site of application in the body
    • A61L27/3645—Connective tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
    • A61L27/3683—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix subjected to a specific treatment prior to implantation, e.g. decellularising, demineralising, grinding, cellular disruption/non-collagenous protein removal, anti-calcification, crosslinking, supercritical fluid extraction, enzyme treatment
    • 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
    • A61F2/30756—Cartilage endoprostheses
    • A61F2002/30762—Means for culturing cartilage
    • 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
    • A61F2/3094—Designing or manufacturing processes
    • A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • A61F2002/30957—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using a positive or a negative model, e.g. moulds
    • 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
    • A61F2/4644—Preparation of bone graft, bone plugs or bone dowels, e.g. grinding or milling bone material
    • A61F2002/4648—Means for culturing bone graft
    • 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
    • A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Epidemiology (AREA)
  • Biomedical Technology (AREA)
  • Transplantation (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dermatology (AREA)
  • Medicinal Chemistry (AREA)
  • Dentistry (AREA)
  • Botany (AREA)
  • Vascular Medicine (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Ceramic Engineering (AREA)
  • Molecular Biology (AREA)
  • Cardiology (AREA)
  • Urology & Nephrology (AREA)
  • Zoology (AREA)
  • Rheumatology (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Electrotherapy Devices (AREA)

Abstract

내용 없음

Description

이식제와 그의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 턱에 조여진 치아보철(1)을 제시한 것이다, 보철의 지지체(2)는 다공성 바깥표면을 가진 조직-성장 촉진용 티타늄(신터링 즉, 증발에 의해 금속이 축적되어 얻어지는)이다. 지지체를 환자로 부터 취한 턱뼈 조직을 분쇄한 뼈가루(4)와 터타늄 분말(5)의 혼합물로 이루어진 층(3)에 고정시킨다. 층(3)의 성분(4)와 (5)가 서로 그리고 지지체(2)에 연결되어, 혼합물내의 뼈가루가 성장해 조직 (7)을 형성하도록 상기 혼할물에 자양분 용액(6)을 첨가한다. 보철의 내면에 실(9)로 주형 (8)내에 보철이 형성되고 치과용 보철, 바깥표면에도 실(17)이 형성된다.
제2도는 상기의 혼합물층(13)내의 한 끝에 끼운 여러개의 티타늄 핀(12)이 제공된 연골이식 (11)을 제시한 것이다. 반대편, 핀(12)의 유리된 끝으로 이식제(11)는 체조직에 고정된다

Claims (6)

  1. 체조직에 면하는 표면에 생물성 물질을 함유하는 이식제(보철제)에 있어서, 상기 표면은 보철체(지지체)를 제공하는 층 또는 하나이상의 층-고정요소를 제공하는 층으로 형성되었으며, 상기 지지체 또는 고정요소는 그것에 연결되기위해 자양분을 첨가하여, 상기 표면밖과 상기 지지체 또는 고정요소내로 성장하도록 하는 조직 -결합성류의 입자/가루물질과 뼈가루와 같이 분쇄된 조직-적합성 생물성 물질의 흔합물로 이루어진 조직-적합성 물질의 표면층을 갖거나 상기 표면층으로 이루어전 있으며, 상기 성장은 상기 혼합물의 성분(4,5)를 서로 연결시키는 것임을 특징으로 하는 이식제.
  2. 제1항에 있어서, 상기 지지체 또는 고정요소가 다공성 바깥표면을 가진 티타늄을 포함함을 특징으로 하는 이식제.
  3. 제1내지 2항중 어느 한 항에 있어서, 입자/가루물질이 티타늄을 포함함을 특징으로 하는 이식제.
  4. 제1내지 3항중 어느 한 항에 있어서, 생물성 물질이 내생적임을 특징으로 하는 이식제.
  5. 제1내지 4항중 어느 한 항에 있어서, 생물성 물질이 이식제가 삽입되거나 대체될 조직과 같은 류의 조직임을 특징으로 하는 이식제.
  6. 이식제 지지체 또는 이식제-고정요소 및 조직-적합성류의 입자/가루물질과 분쇄된 생물성 물질의 혼합물과 상기 혼합물에 대한 자양분 용액을 생물성 물질이 주형구멍의 경계벽 밖과 이식제 지지체내로 성장하도록 하는 주형에 넣는 것임을 특징으로 하는 제1-5항중 어느 한 항에 따른 이식제를 제조하는 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900700291A 1988-06-14 1989-06-13 이식체와 그의 제조방법 KR970011447B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE8802214-0 1988-06-14
SE8802214A SE465064B (sv) 1988-06-14 1988-06-14 Implantat och saett att framstaella det
PCT/SE1989/000333 WO1989012472A1 (en) 1988-06-14 1989-06-13 Implant and method of making it

Publications (2)

Publication Number Publication Date
KR900701331A true KR900701331A (ko) 1990-12-01
KR970011447B1 KR970011447B1 (ko) 1997-07-11

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US (1) US5217496A (ko)
EP (1) EP0419548B1 (ko)
JP (1) JP2543605B2 (ko)
KR (1) KR970011447B1 (ko)
AT (1) ATE93148T1 (ko)
AU (1) AU615771B2 (ko)
BR (1) BR8907486A (ko)
CA (1) CA1338930C (ko)
DE (1) DE68908554T2 (ko)
DK (1) DK169861B1 (ko)
ES (1) ES2018723A6 (ko)
FI (1) FI96383C (ko)
MX (1) MX169887B (ko)
NO (1) NO176126C (ko)
RU (1) RU2071354C1 (ko)
SE (1) SE465064B (ko)
WO (1) WO1989012472A1 (ko)

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* Cited by examiner, † Cited by third party
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FR2649885B1 (fr) * 1989-07-21 1994-03-25 Matteis Gerard De Prothese de hanche
JP3471967B2 (ja) * 1995-03-28 2003-12-02 カネボウ株式会社 ハイブリッド型人工歯根
DE19630034A1 (de) * 1996-07-25 1998-04-23 Huels Chemische Werke Ag Biohybrides Zahnimplantat
SE515572C2 (sv) 1998-09-09 2001-09-03 Lanka Ltd Implantat, sätt att framställa det och användning av det
SE515227C2 (sv) 1999-04-28 2001-07-02 Bruce Medical Ab Kropp för åstadkommande av in- och tillväxt av benvävnad och/ eller bindväv och sätt för framställning av kroppen
US6960215B2 (en) 2002-05-08 2005-11-01 Boston Scientific Scimed, Inc. Tactical detachable anatomic containment device and therapeutic treatment system
US20030220696A1 (en) * 2002-05-23 2003-11-27 Levine David Jerome Implantable porous metal
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KR970011447B1 (ko) 1997-07-11
ES2018723A6 (es) 1991-05-01
NO905392L (no) 1990-12-13
CA1338930C (en) 1997-02-25
NO905392D0 (no) 1990-12-13
AU3837189A (en) 1990-01-12
EP0419548B1 (en) 1993-08-18
SE8802214D0 (sv) 1988-06-14
BR8907486A (pt) 1991-05-28
JPH03505050A (ja) 1991-11-07
FI906131A0 (fi) 1990-12-13
SE8802214L (sv) 1989-12-15
DK288490A (da) 1990-12-12
SE465064B (sv) 1991-07-22
NO176126B (no) 1994-10-31
RU2071354C1 (ru) 1997-01-10
US5217496A (en) 1993-06-08
DE68908554D1 (de) 1993-09-23
EP0419548A1 (en) 1991-04-03
WO1989012472A1 (en) 1989-12-28
DK169861B1 (da) 1995-03-20
JP2543605B2 (ja) 1996-10-16
ATE93148T1 (de) 1993-09-15
DE68908554T2 (de) 1994-03-10
FI96383C (fi) 1996-06-25
FI96383B (fi) 1996-03-15
MX169887B (es) 1993-07-29
AU615771B2 (en) 1991-10-10
NO176126C (no) 1995-02-08
DK288490D0 (da) 1990-12-04

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