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SE9303206L - Implantat - Google Patents

Implantat

Info

Publication number
SE9303206L
SE9303206L SE9303206A SE9303206A SE9303206L SE 9303206 L SE9303206 L SE 9303206L SE 9303206 A SE9303206 A SE 9303206A SE 9303206 A SE9303206 A SE 9303206A SE 9303206 L SE9303206 L SE 9303206L
Authority
SE
Sweden
Prior art keywords
implant
contact
bone tissue
pores
elevation
Prior art date
Application number
SE9303206A
Other languages
English (en)
Other versions
SE9303206D0 (sv
SE504294C2 (sv
Inventor
Thomas Johansson
Ralph Harrysson
Leif Hermansson
Original Assignee
Lucocer Ab
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
Application filed by Lucocer Ab filed Critical Lucocer Ab
Priority to SE9303206A priority Critical patent/SE504294C2/sv
Publication of SE9303206D0 publication Critical patent/SE9303206D0/sv
Priority to EP94927880A priority patent/EP0720454B1/en
Priority to DK94927880T priority patent/DK0720454T3/da
Priority to JP7510744A priority patent/JPH09504193A/ja
Priority to AU77117/94A priority patent/AU7711794A/en
Priority to PCT/SE1994/000724 priority patent/WO1995009583A1/en
Priority to ES94927880T priority patent/ES2141839T3/es
Priority to AT94927880T priority patent/ATE186824T1/de
Priority to DE69421821T priority patent/DE69421821T2/de
Publication of SE9303206L publication Critical patent/SE9303206L/sv
Publication of SE504294C2 publication Critical patent/SE504294C2/sv
Priority to US09/037,981 priority patent/US6005164A/en

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
    • A61F2/30767—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
    • 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
    • A61C8/0003—Not used, see subgroups
    • A61C8/0004—Consolidating natural teeth
    • A61C8/0006—Periodontal tissue or bone regeneration
    • 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
    • A61F2002/30795—Blind bores, e.g. of circular cross-section
    • 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
    • A61F2002/30795—Blind bores, e.g. of circular cross-section
    • A61F2002/30803—Blind bores, e.g. of circular cross-section inclined obliquely
    • 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
    • A61F2002/30795—Blind bores, e.g. of circular cross-section
    • A61F2002/30807—Plurality of blind bores
    • A61F2002/30808—Plurality of blind bores 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
    • A61F2002/30795—Blind bores, e.g. of circular cross-section
    • A61F2002/30807—Plurality of blind bores
    • A61F2002/3081—Plurality of blind bores 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
    • A61F2/30767—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
    • A61F2002/3082—Grooves
    • A61F2002/30823—Grooves having the shape of a reverse dovetail
    • 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
    • A61F2002/30838—Microstructures
    • 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
    • A61F2002/3097—Designing or manufacturing processes using laser
    • 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
    • A61F2310/00011—Metals or alloys
    • A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni 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)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Cardiology (AREA)
  • Vascular Medicine (AREA)
  • Transplantation (AREA)
  • Developmental Biology & Embryology (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Prostheses (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Materials For Medical Uses (AREA)
  • Dental Prosthetics (AREA)
SE9303206A 1993-10-01 1993-10-01 Implantat avsett att fixeras genom kontakt med nybildad benvävnad SE504294C2 (sv)

Priority Applications (10)

Application Number Priority Date Filing Date Title
SE9303206A SE504294C2 (sv) 1993-10-01 1993-10-01 Implantat avsett att fixeras genom kontakt med nybildad benvävnad
DE69421821T DE69421821T2 (de) 1993-10-01 1994-08-05 Implantat
AU77117/94A AU7711794A (en) 1993-10-01 1994-08-05 An implant
DK94927880T DK0720454T3 (da) 1993-10-01 1994-08-05 Implantat
JP7510744A JPH09504193A (ja) 1993-10-01 1994-08-05 インプラント
EP94927880A EP0720454B1 (en) 1993-10-01 1994-08-05 An implant
PCT/SE1994/000724 WO1995009583A1 (en) 1993-10-01 1994-08-05 An implant
ES94927880T ES2141839T3 (es) 1993-10-01 1994-08-05 Un implante.
AT94927880T ATE186824T1 (de) 1993-10-01 1994-08-05 Implantat
US09/037,981 US6005164A (en) 1993-10-01 1998-03-11 Implant with porous surface

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9303206A SE504294C2 (sv) 1993-10-01 1993-10-01 Implantat avsett att fixeras genom kontakt med nybildad benvävnad
US61960896A 1996-04-10 1996-04-10

Publications (3)

Publication Number Publication Date
SE9303206D0 SE9303206D0 (sv) 1993-10-01
SE9303206L true SE9303206L (sv) 1995-04-02
SE504294C2 SE504294C2 (sv) 1996-12-23

Family

ID=26661850

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9303206A SE504294C2 (sv) 1993-10-01 1993-10-01 Implantat avsett att fixeras genom kontakt med nybildad benvävnad

Country Status (9)

Country Link
US (1) US6005164A (sv)
EP (1) EP0720454B1 (sv)
JP (1) JPH09504193A (sv)
AT (1) ATE186824T1 (sv)
AU (1) AU7711794A (sv)
DE (1) DE69421821T2 (sv)
ES (1) ES2141839T3 (sv)
SE (1) SE504294C2 (sv)
WO (1) WO1995009583A1 (sv)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19520867C2 (de) * 1995-06-08 1998-05-20 Kirsch Axel Abdeckmembran
DE19520866C2 (de) * 1995-06-08 1998-04-16 Kirsch Axel Vorrichtung zum Behandeln einer Knochenausnehmung
US5755682A (en) 1996-08-13 1998-05-26 Heartstent Corporation Method and apparatus for performing coronary artery bypass surgery
SE9701647D0 (sv) * 1997-04-30 1997-04-30 Nobel Biocare Ab Calcium-phonsphate coated implant element
US5957690A (en) * 1997-11-17 1999-09-28 Bartee; Barry K. Textured high density PTFE medical barrier
WO1999013700A2 (de) * 1999-01-12 1999-03-25 Lipat Consulting Ag Oberflächenstruktur für ein enossales implantat
SE515300C2 (sv) * 1999-11-17 2001-07-09 Ann Wennerberg Element avsett att implanteras i kroppsvävnad samt förfarande och anordning för tillverkning av sådant element
US6711283B1 (en) 2000-05-03 2004-03-23 Aperio Technologies, Inc. Fully automatic rapid microscope slide scanner
US6620332B2 (en) 2001-01-25 2003-09-16 Tecomet, Inc. Method for making a mesh-and-plate surgical implant
US7018418B2 (en) 2001-01-25 2006-03-28 Tecomet, Inc. Textured surface having undercut micro recesses in a surface
US6599322B1 (en) 2001-01-25 2003-07-29 Tecomet, Inc. Method for producing undercut micro recesses in a surface, a surgical implant made thereby, and method for fixing an implant to bone
SE0104349L (sv) * 2001-12-21 2003-06-22 Nobel Biocare Ab Förfarande för att på yta på implantat åstadkomma ytstruktur samt sådant implantat
SE520756C2 (sv) 2001-12-21 2003-08-19 Nobel Biocare Ab Förfarande för att åstadkomma ytstruktur på implantat samt sådant implantat
SE523395C2 (sv) 2001-12-21 2004-04-13 Nobel Biocare Ab Implantat och förfarande och system för tillhandahållande av sådant implantat
EP1358859A1 (en) * 2002-04-29 2003-11-05 Politecnico Di Milano Bone prostheses having multilayer interface
SE523236C2 (sv) * 2002-07-19 2004-04-06 Astra Tech Ab Ett implantat och ett förfarande för behandling av en implantatyta
SE523288C2 (sv) * 2002-07-19 2004-04-06 Astra Tech Ab Ett implantat och ett förfarande för behandling av en implantatyta
IL156033A0 (en) 2003-05-21 2004-03-28 Ophir Fromovich Ophir Fromovic Dental implant
JP2006526478A (ja) * 2003-06-03 2006-11-24 オステオテック インコーポレーテッド 荷重支持面に不均一形状の突起を備えた生体インプラント
IL172588A0 (en) * 2005-12-14 2006-04-10 Presrv Ltd Faceted long bone head prosthesis
US20060229609A1 (en) * 2005-03-18 2006-10-12 Chao-Jan Wang Microadjustment spinal joint fixture
US8164622B2 (en) 2005-07-01 2012-04-24 Aperio Technologies, Inc. System and method for single optical axis multi-detector microscope slide scanner
US20070123923A1 (en) * 2005-11-30 2007-05-31 Lindstrom Curtis C Implantable medical device minimizing rotation and dislocation
US7867061B2 (en) * 2006-09-20 2011-01-11 Mentor Worldwide Llc Texturizing surfaces
US20080154378A1 (en) * 2006-12-22 2008-06-26 Warsaw Orthopedic, Inc. Bone implant having engineered surfaces
US8038442B2 (en) 2007-04-23 2011-10-18 Nobel Biocare Services Ag Dental implant and dental component connection
US8556990B2 (en) 2009-02-23 2013-10-15 Barry K. Bartee Reinforced PTFE medical barriers
US20100292795A1 (en) * 2009-05-13 2010-11-18 Jensen Ole T Biomedical implant surface topography
US8727203B2 (en) 2010-09-16 2014-05-20 Howmedica Osteonics Corp. Methods for manufacturing porous orthopaedic implants
US9949837B2 (en) 2013-03-07 2018-04-24 Howmedica Osteonics Corp. Partially porous bone implant keel
CN103784205A (zh) * 2014-01-22 2014-05-14 北京天新福医疗器材有限公司 一种人工牙种植体的制备方法
JP6893838B2 (ja) * 2017-07-12 2021-06-23 日本ピストンリング株式会社 インプラントの表面構造およびインプラントの表面構造の製造方法
US10478311B2 (en) 2017-08-14 2019-11-19 Globus Medical, Inc. Medical devices including titanium surface treatment

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808606A (en) * 1972-02-22 1974-05-07 R Tronzo Bone implant with porous exterior surface
US4195366A (en) * 1977-12-23 1980-04-01 Sterling Drug Inc. Whitlockite ceramic
US4865603A (en) * 1988-02-04 1989-09-12 Joint Medical Products Corporation Metallic prosthetic devices having micro-textured outer surfaces
US5246530A (en) * 1990-04-20 1993-09-21 Dynamet Incorporated Method of producing porous metal surface
DE59103876D1 (de) * 1990-09-13 1995-01-26 Thera Ges Fuer Patente Implantierbare prothese.
SE468502B (sv) * 1991-06-03 1993-02-01 Lucocer Ab Poroest implantat
SE469653B (sv) * 1992-01-13 1993-08-16 Lucocer Ab Poroest implantat
US5344494A (en) * 1993-01-21 1994-09-06 Smith & Nephew Richards, Inc. Method for cleaning porous and roughened surfaces on medical implants

Also Published As

Publication number Publication date
JPH09504193A (ja) 1997-04-28
EP0720454A1 (en) 1996-07-10
WO1995009583A1 (en) 1995-04-13
DE69421821T2 (de) 2000-07-06
AU7711794A (en) 1995-05-01
EP0720454B1 (en) 1999-11-24
ES2141839T3 (es) 2000-04-01
ATE186824T1 (de) 1999-12-15
SE9303206D0 (sv) 1993-10-01
US6005164A (en) 1999-12-21
DE69421821D1 (de) 1999-12-30
SE504294C2 (sv) 1996-12-23

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