DK1137448T3 - Poröst tekstilprodukt fremstillet af bioaktive glasfibre og anvendelse deraf - Google Patents

Poröst tekstilprodukt fremstillet af bioaktive glasfibre og anvendelse deraf

Info

Publication number
DK1137448T3
DK1137448T3 DK99958198T DK99958198T DK1137448T3 DK 1137448 T3 DK1137448 T3 DK 1137448T3 DK 99958198 T DK99958198 T DK 99958198T DK 99958198 T DK99958198 T DK 99958198T DK 1137448 T3 DK1137448 T3 DK 1137448T3
Authority
DK
Denmark
Prior art keywords
bioactive glass
glass fibers
textile product
product made
porous textile
Prior art date
Application number
DK99958198T
Other languages
English (en)
Inventor
Antti Yli-Urpo
Mikko Hupa
Egon Nordstroem
Heimo Ylaenen
Hannu Aro
Kaj Karlsson
Original Assignee
Vivoxid Oy
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 Vivoxid Oy filed Critical Vivoxid Oy
Application granted granted Critical
Publication of DK1137448T3 publication Critical patent/DK1137448T3/da

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C4/00—Compositions for glass with special properties
    • C03C4/0007—Compositions for glass with special properties for biologically-compatible glass
    • 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
    • A61L27/02—Inorganic materials
    • A61L27/10—Ceramics or glasses
    • 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
    • A61L27/30—Inorganic materials
    • A61L27/306—Other specific inorganic materials not covered by A61L27/303 - A61L27/32
    • 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
    • A61L27/30—Inorganic materials
    • A61L27/32—Phosphorus-containing materials, e.g. apatite
    • 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
    • A61L27/40—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
    • 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
    • A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
    • 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
    • A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
    • A61L27/54—Biologically active materials, e.g. therapeutic substances
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C13/00—Fibre or filament compositions
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/097—Glass compositions containing silica with 40% to 90% silica, by weight containing phosphorus, niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C4/00—Compositions for glass with special properties
    • C03C4/0007—Compositions for glass with special properties for biologically-compatible glass
    • C03C4/0014—Biodegradable glass
    • 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
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • 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
    • A61F2/30965—Reinforcing the prosthesis by embedding particles or fibres during moulding or dipping
    • 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
    • A61F2002/30667—Features concerning an interaction with the environment or a particular use of the prosthesis
    • A61F2002/30677—Means for introducing or releasing pharmaceutical products, e.g. antibiotics, into the body
    • 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
    • A61F2310/00329—Glasses, e.g. bioglass

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Transplantation (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Dermatology (AREA)
  • Veterinary Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Materials Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Molecular Biology (AREA)
  • Ceramic Engineering (AREA)
  • Composite Materials (AREA)
  • Biomedical Technology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Materials For Medical Uses (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Dental Preparations (AREA)
DK99958198T 1998-12-11 1999-11-19 Poröst tekstilprodukt fremstillet af bioaktive glasfibre og anvendelse deraf DK1137448T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI982684A FI110063B (fi) 1998-12-11 1998-12-11 Uusi bioaktiivinen tuote ja sen käyttö

Publications (1)

Publication Number Publication Date
DK1137448T3 true DK1137448T3 (da) 2006-05-08

Family

ID=8553092

Family Applications (1)

Application Number Title Priority Date Filing Date
DK99958198T DK1137448T3 (da) 1998-12-11 1999-11-19 Poröst tekstilprodukt fremstillet af bioaktive glasfibre og anvendelse deraf

Country Status (11)

Country Link
US (1) US6517857B2 (da)
EP (1) EP1137448B1 (da)
JP (1) JP2002532158A (da)
AT (1) ATE316389T1 (da)
AU (1) AU761459B2 (da)
CA (1) CA2354850C (da)
DE (1) DE69929625T2 (da)
DK (1) DK1137448T3 (da)
ES (1) ES2255318T3 (da)
FI (1) FI110063B (da)
WO (1) WO2000035509A1 (da)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20000515A0 (fi) * 2000-03-07 2000-03-07 Heimo Ylaenen Menetelmä bioaktiivisen lasin pinnan karhentamiseksi
US7005135B2 (en) * 2001-01-30 2006-02-28 Ethicon Inc. Glass scaffolds with controlled resorption rates and methods for making same
FI117963B (fi) 2001-04-26 2007-05-15 Eija Marjut Pirhonen Luuta korvaavat materiaalit
EP3111895B1 (en) * 2004-02-03 2019-09-04 The General Hospital Corporation Highly crystalline cross-linked oxidation-resistant polyethylene
EP1611906A1 (en) * 2004-06-30 2006-01-04 YLI-URPO, Antti A multilayer material
EP2208739A1 (en) 2005-08-22 2010-07-21 The General Hospital Corporation d/b/a Massachusetts General Hospital Highly crystalline polyethylene
US20070258916A1 (en) * 2006-04-14 2007-11-08 Oregon Health & Science University Oral compositions for treating tooth hypersensitivity
EP1872806A1 (en) * 2006-06-28 2008-01-02 Vivoxid Oy Implant, its uses and methods for making it
WO2008000888A2 (en) * 2006-06-28 2008-01-03 Vivoxid Oy Implant containing a source of oxygen
KR100791512B1 (ko) 2006-12-21 2008-01-04 단국대학교 산학협력단 나노구조로 이루어진 하이브리드형 조직재생용 멤브레인과스캐폴드 및 그들의 제조방법
KR100791518B1 (ko) 2006-12-21 2008-01-04 단국대학교 산학협력단 생체활성 유리 나노섬유(ｂｇｎｆ) 및 그 제조방법
DE102007018200A1 (de) * 2007-04-16 2008-10-23 Gehl, Gerolf, Dr. Verfahren zum Herstellen und insbesondere zum Wiederherstellen einer Gewebestruktur
US20090192609A1 (en) * 2008-01-29 2009-07-30 Zimmer, Inc. Implant device for use in an implant system
US9402724B2 (en) 2008-05-12 2016-08-02 Mo-Sci Corporation Dynamic bioactive nanofiber scaffolding
US20100136086A1 (en) * 2008-05-12 2010-06-03 Day Thomas E Dynamic bioactive nanofiber scaffolding
KR101047897B1 (ko) * 2008-10-22 2011-07-08 단국대학교 산학협력단 단백질 결합형 생체활성유리 나노섬유 및 이의 제조방법
KR101683328B1 (ko) 2009-07-10 2016-12-06 바이오2 테크놀로지스, 아이엔씨. 조직공학용 장치 및 방법
US20110206828A1 (en) * 2009-07-10 2011-08-25 Bio2 Technologies, Inc. Devices and Methods for Tissue Engineering
US9775721B2 (en) 2009-07-10 2017-10-03 Bio2 Technologies, Inc. Resorbable interbody device
CA2779109A1 (en) 2009-10-29 2011-05-05 Prosidyan, Inc. Dynamic bioactive bone graft material having an engineered porosity
MX2012004919A (es) * 2009-10-29 2012-08-15 Prosidyan Inc Material de injerto oseo.
US8551525B2 (en) 2010-12-23 2013-10-08 Biostructures, Llc Bone graft materials and methods
BR102013020961A2 (pt) 2013-08-12 2016-03-08 Univ Fed De São Carlos composição vítrea, fibras e tecidos vítreos bioativos e artigos
US10238507B2 (en) 2015-01-12 2019-03-26 Surgentec, Llc Bone graft delivery system and method for using same
US11013836B2 (en) * 2016-06-16 2021-05-25 The Curators Of The University Of Missouri Inorganic biodegradable substrates for devices and systems
US11116647B2 (en) 2018-04-13 2021-09-14 Surgentec, Llc Bone graft delivery system and method for using same
US10687828B2 (en) 2018-04-13 2020-06-23 Surgentec, Llc Bone graft delivery system and method for using same
TW202337504A (zh) * 2022-03-17 2023-10-01 巨晰光纖股份有限公司 用於再生醫材之生物玻璃纖維及其應用

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1477899A (en) * 1973-09-17 1977-06-29 Leitz Ernst Gmbh Manufacture of therapeutically useful composite materials
US4604097A (en) * 1985-02-19 1986-08-05 University Of Dayton Bioabsorbable glass fibers for use in the reinforcement of bioabsorbable polymers for bone fixation devices and artificial ligaments
AU630484B2 (en) * 1989-08-11 1992-10-29 Isover Saint-Gobain Glass fibres capable of decomposing in a physiological medium
IT1240938B (it) * 1990-02-08 1993-12-27 S.E.I.P.I. Societa' Esportazione Importazione Prodotti Industriali Composizione vetrosa bioattiva per impianti ossei e prodotti ottenuti con tale composizione o che la comprendono
JPH06116114A (ja) * 1992-10-09 1994-04-26 Nikon Corp 骨充填材
US5468544A (en) * 1993-11-15 1995-11-21 The Trustees Of The University Of Pennsylvania Composite materials using bone bioactive glass and ceramic fibers
FI101129B (sv) * 1995-01-13 1998-04-30 Vivoxid Oy Nya bioaktiva glas och deras användning
FI103715B1 (fi) 1997-04-21 1999-08-31 Heimo Ylaenen Uusi komposiitti ja sen käyttö

Also Published As

Publication number Publication date
FI982684A0 (fi) 1998-12-11
WO2000035509A1 (en) 2000-06-22
FI110063B (fi) 2002-11-29
FI982684A (fi) 2000-06-12
ES2255318T3 (es) 2006-06-16
AU761459B2 (en) 2003-06-05
ATE316389T1 (de) 2006-02-15
CA2354850A1 (en) 2000-06-22
EP1137448B1 (en) 2006-01-25
JP2002532158A (ja) 2002-10-02
EP1137448A1 (en) 2001-10-04
DE69929625D1 (de) 2006-04-13
US6517857B2 (en) 2003-02-11
AU1561700A (en) 2000-07-03
CA2354850C (en) 2009-03-24
US20010041325A1 (en) 2001-11-15
DE69929625T2 (de) 2006-08-10

Similar Documents

Publication Publication Date Title
DK1137448T3 (da) Poröst tekstilprodukt fremstillet af bioaktive glasfibre og anvendelse deraf
DK77496A (da) Holdbare hydrofile fibre, klædeartikler og støbte artikler fremstillet heraf
DE60043502D1 (de) Hochabsorbierende mehrkomponentenfasern
DE69022568D1 (de) Faseroptischer 1xN-Koppler und Herstellungsverfahren.
DK0859073T3 (da) Bikomponentfibre med mindst en elastisk del, stoffer og varer produceret heraf
FI912649A0 (fi) Avslutningssystem foer optiska fibrer.
DE69623778D1 (de) Anschwellendes bahnmaterial mit glasfasern
DK0841086T3 (da) Hulfibermembranindretning med inerte filamenter tilfældigt fordelt hen over mellemrummene mellem hulfibrene
DE60122561D1 (de) Faserzement verbundmaterial mit biozid behandelten, dauerhaften zellulosefasern
ES2101499T3 (es) Fibras.
DE59102205D1 (de) Mehrstufiger faseroptischer Verstärker.
ATE233804T1 (de) Konzentrierte, stabile textilweichmacherzusammensetzung
DK0581810T3 (da) Fibre eller filamenter
IT1284392B1 (it) Foglio di filtrazione in fibre aramidiche.
DK0696329T3 (da) Elastiske fibre, stoffer og genstande fremstillet heraf
DK0719879T3 (da) Fremgangsmåde til fremstilling af fibre til ikke-vævede materialer af høj styrke og de resulterende fibre og ikke-vævede ma
DE59203172D1 (de) Glasfaserverstärkte Styrol-Copolymerisate.
FI915849A0 (fi) Avslutningsanordning foer optisk fiber.
DE69206147D1 (de) Yttriumoxid-Aluminiumoxidfasern.
DE69112795D1 (de) Schlichtezusammensetzungen für glas und damit beschichtete glasfasern.
ITTO940186A0 (it) Procedimento per la realizzazione di fibre ottiche monomodo in vetro, flururato.
DK0789797T3 (da) Meget glatte fibre, stof og formede artikler
TR199902159A3 (tr) Polyester fiberler ve filamanlar ve üretim yöntemleri.
ITRM930684A1 (it) Coloranti azoici reattivi nei confronti di fibre
KR920701282A (ko) 아크릴 니트릴계 공중합체 및 이로부터 얻어진 섬유, 심초형 복합섬유