ITA Part Partner ner in in medical medical tech technolo nologies gies Late La test st de deve velo lopm pmen ents ts in me medi dica call te text xtil ile e pr prod oduc ucts ts
Institutsdirektor: Univ.-Prof. Dr.-Ing. Dipl.-Wirt. Ing. Thomas Gries
Classification into the research groups of the ITA
Man-made fibres
Technical textiles Textile fabric production
Staple fibre processing
Medical textiles
Classification into the research groups of the ITA
Man-made fibres
Technical textiles Textile fabric production
Staple fibre processing
Medical textiles
Experience and expertise
Product development (Filament, structure, scaffold, implant)
Machine development (Modification of existing machines, construction of new machines as well as conceiving new product systems)
Development of new testing sets and methods
Quality management for the production of medical products
Development of new surgical techniques and therapies
Why textile implants ? Material
Source: ACTO
Drapeable
High specific surfaces
Biocompatible materials
Material combinations
Structure
2D- and 3D-structures
Environment-adapted mechanical characteristics
Source: Physiologie
Adjustable macroscopic structur
Directed surface design
Controllable degradation
Materials Degradable polymers
Polyglycolid (PGA)
Polylactid (PLA)
Polyester amide (PEA)
Non-degradable polymers
Polyethylene terephthalate (PET)
Polyvinylidene fluoride (PVDF)
Shape Memory Polymer (SMP)
Metals and alloys Shape
Memory Alloy (SMA)
Textile implants from PVDF
Chemistry
Spinning
Textile Yarn Finishing production modification Testing techniques
Joining technology
Medicine
Spinning of absorbable and not-absorbable polymers Spinning of mono- und multifilaments
Spinning nozzle
Processing of minimum quantities of polymers Spinning of bicomponent fibres Monofilament fibre Spinning of modified polymers
Multifilament fibre
Chemisry
Spinning
Textile Yarn Finishing production modification Testing techniques
Joining technology
Medicine
Drawing Texturing
Plying
Twirling
Texturing
Plying
Staple fibre production Staple fibre production
Twirling
Chemistry
Spinning
Textile Yarn Finishing production modification Testing techniques
Nonwoven Knitting
Braiding Weaving
Joining technology
Medicine
Chemistry
Spinning
Textile Yarn Finishing production modification Testing techniques
Joining technology
Coating
Silicone coating
Activation
Drug Delivery Micro capsule on knitted fabric
Medicine
Chemistry
Spinning
Textile Yarn Finishing prodction modification Testing techniques
Sewing technology
Embroidery technology
Sewing machine
Joining technology
Medicine
Chemistry
Spinning
Textile Yarn Finishing production modification Testing techniques
Joining technology
Development and construction of new testing techniques Adaptation of existing testing techniques Realisation of tests for textile medical products as well as alloplastic and allostatic samples
Medicine
Selected projects
“In vitro-generation of a multilayered stem cell derived ureteral graft” (BIOMAT)
“EU-BioSys: Intelligent Biomaterial Systems for Cardiovascular Tissue Repair” (EU)
“EU-3GSCAFF: Third Generation Scaffolds for Tissue Engineering & Regenerattive Medicine” (EU)
“Herniennetz auf Glasfaserbasis” (InnoNet)
“Reconstruction of Muscle from Myogenic and Pluripotent Stem Cells” (NRW)
“Der Einsatz von humanen adulten Stammzellen auf einem resorbierbaren, osteoinduktiven, pH-neutralen Verbundwerkstoff aus Poly (D,L)- Laktid/Calciumphosphat und resorbierbaren textilen Zellträgerstrukturen (BAK, PGA, PLA und PLLA) zur Rekonstruktion von Knochendefekten in der Mund-, Kiefer- und plastischen Gesichtschirurgie” (Start)
“Development of a textile structure to position a synthetic mitral valve” (BMBF)
“Untersuchung der Verarbeitungseigenschaften von Nitinol zur Herstellung textiler Strukturen” (AiF-Zutech)
„Entwicklung von neuen Faserstrukturen für medizinische Textilien“ (Stiftung Industrieforschung)
Netzwerke
Aachen Polymer Chain
A Survey of ITA
1
Head of department
1
Head engineer
1
Lecturer
26
Assistant employees
18
Technical employees
5
Office workers
4
Trainees
56
Student employees
Locations of ITA in Aachen
Contact us! Management / Head of Department:
Research groups:
Univ.-Prof. Dr.-Ing. Dipl.-Wirt. Ing. Th. Gries
• Medical textiles:
Dr.-Ing. D. Aibibu
Dr.-Ing. R. Ramakers (Head engineer)
• Technical textiles:
Dipl.-Ing. A. Roye
Akad. Rat Dr.-Ing. D. Veit
• Man-made fibre technology: Dr.-Ing. B. Schmenk
Laboratories / Workshops: Testing laboratory:
M. Steffens
Microscopy:
M. Rohs
Electrical laboratory:
M. v. Thenen
Construction:
D. Mergl
Software:
Dipl.-Ing. C. Kozik
Tel. : ++49 (0) 241 / 80 956 21 E-mail:
[email protected]
• Staple fibre processing:
Dipl.-Ing. A. Chennoth
• Textile fabric production:
Dipl.-Ing. M. Strauf Amabile
Fax : ++49 (0) 241 / 80 921 49 http://www.ita.rwth-aachen.de
Main Focus of the Research Groups
ITA Presentation
Man-made Fibre Technology
Staple Fibre Processing
Textile Fabric Production
Technical Textiles
Quality Control and Process Analysis
Up-dated versions are available as downloads on our homepage
http://www.ita.rwth-aachen.de
Chemistry
Spinning
Textile Yarn Finishing production modification Testing techniques
Joining technology
Medicine
Piston spinning machine
Minimum throughput: 30 g or 34 ccm
Piston throughput
0,2-1,3 g/min
Cooling with quench or spin bath
Movable draw frame: 3 godets (Duo), draw bath, hot air chamber
Winding speed: Up to 140 m/min
Titer range (55 dtex – 208 dtex, dep. on layout)
Piston spinning machine with spin bath
Scheme of the piston spinning machine with quench duct
Chemistry
Spinning
Textile Yarn Finishing production modification Testing techniques
Joining technology
Medicine
Bicomponent spinning machine Max. Max. FDY POY Titer Titer
throughput of the 1. extruder: Ca. 3 kg/h (50 g/min) throughput des 2. extruder: Ca. 1 kg/h (16,67 g/min) draw winding machine: 400 bis 1800 m/min draw winding machine: 2500 bis 3500 m/min range (Mulitfilament): Ca. 33 – 266 dtex (ca. 200 – 600 μm)
Laboratory melt-spinning system
range (Monofilament): Ca. 30 – 133 dtex (ca. 200 – 430 μm)
Scheme of the bicomponentmelt spinning system
Chemistry
Spinning
Textile Yarn Finishing production modification Testing techniques
Joining technology
Bicomponent fibre types: Side-by-Side
Sheath/Core
Island-in-the-Sea
Source: Hills
Segmented
Source: Neumag
Pie-Type
Medicine
Chemistry
Spinning
Textile Yarn Finishing production modification Testing techniques
Joining technology
Medicine
Elastan POY
Draw zone
Texturing nozzle
Slot heater
Winder
Modified Air-jet texturing machine (E. Erdmann GmbH)
ATC-Prozess: Air-jet texturing & covering
Chemistry
Spinning
Textile Yarn Finishing production modification Testing techniques
Joining technology
Medicine
Non-woven manufacturing
Aero dynamical non-woven manufacturing (non-orientated non-woven) and carding lab Scale (orientated non-woven)
Lab Carding Machine
Optimal material / volume ratio
Adjustable porosity
Manufacturing of suitable surface structure
Incorporation of bioactive agents (e.g. micro spheres)
Aero dynamical non- Guidance structure for function-oriented cell growth woven manufacturing
Multi-layer construction and manufacturing of designed non-wovens
Needle Punching Machine
Manufacturing in medical standard
Chemistry
Spinning
Textile Yarn Finishing production modification Testing techniques
Joining technology
Medicine
Product examples
Scaffolds for tissue engineering •
Gingival replacement
•
Urether
•
Stem cells
•
Adipose cells
•
Mucous membrane
•
Bone replacement
Non-wovens from PGA
Microspheres in a non-woven fabric (Source: ITA-RWTH)
Chemistry
Spinning
Textile Yarn Finishing production modification Testing techniques
Joining technology
Medicine
Warp knitting
Double Raschel warp knitting machine
Processing of smallest material quantities
Adjustable porosity
Adjustable elastic characteristics
Admission of cyclic loads
Structuring of surface
Material combinations
Manufacturing of plane interlaced warp knitted structure and dendritic tube structures with different geometry
Different yarn count (Diameter 10 to 300 µm)
Chemistry
Spinning
Textil Yarn Finishing production modification Testing techniques
Joining technology
Medicine
Product examples
Vascular grafts
Artificial cornea
Meniscus prothesis
Hernia net
Heart valve
Wound dressings
Stents
Hernia net
Artificial cornea
Nitinol-Stent
Heart valve
Meniscus prothesis
Chemistry
Spinning
Textil Yarn Finishing production modification Testing techniques
Joining technology
Medicine
Braiding
3D-Rotation-braiding machine
Compact structure
High strength
Small elongation
Variable fineness
3D-braid with continuous change of geometry
Incorporation of functional components
Chemistry
Spinning
Textil Yarn Finishing production modification Testing techniques
ligament
Drug-Delivery-System
Stents
Medicine
1 mm
Product examples
Joining technology
3D-Braid
Nitinol-Stent
Alloplastic cruciate ligament
Chemistry
Spinning
Textile Yarn Finishing production modification Testing techniques
Joining technology
Medicine
Weaving
Laboratory and industry weaving machine
Processing of smallest material quantities
Band weaving machine
Adjustable porosity
Low elasticity
Chemistry
Spinning
Textile Yarn Finishing production modification Testing techniques
Joining technology
Product examples
Hernia net
Blood filter
Nitinol woven fabric
Hernia nets
Medicine
Chemistry
Spinning
Textile Yarn Finishing production modification Testing techniques
Joining technology
Medicine
Use of external systems
Finishing of textile structures with bioactive substances
Plasma coating
Incorporation of unstable thermal active substances
(Source: iplas GmbH)
Formation of biofilms is prevented
Improvement of the cell adhesion
Fibroblasts on PVDF (Quelle: ACTO)
Cell cultivation in bioreactor (Source: ACT-Lab)
Surface structuring
