Medical Textiles e

8/8/2019 Medical Textiles e

http://slidepdf.com/reader/full/medical-textiles-e 1/17

Head of Department: Univ.-Prof. Dr.-Ing. Dipl.-Wirt. Ing. Thomas Gries

ITA – Partner in medical technologies

Latest developments in medical textile products

MedicineChemistry SpinningYarn

modification

Textile

productionFinishing Tailoring

Testing techniques



ITA – Partner in medical technologie

Latest developments in medical textile products


modification

Textile


Testing techniques



ITA as Partner

for research and development of textiles for applications in medical technology

Development of new manufacturing processes

Design and construction of new components, devices, machines and production systems

Development and production of medical textiles and functional elements

Development of testing techniques and devices

Testing of medical textile products and allostatic samples

Joint development of operating techniques

for cooperation with interdisciplinary research partners:


modification

Textile


Testing techniques



Selected projects

“Tissue Engineering – in vitro construction of small autologous vascular grafts by the use of an

autologous fibrin gel scaffold” (BIOMAT.)

“Analysis of the influence of textile scaffolds on adult human stemm cells” (NRW)

“Impact of growth factors on chondrocytes in 3-D matrices using micro spheres as a new

release system” (BIOMAT.)

“Preadipocytes in a new types of textile scaffolds” (Holste Stiftung)

“Co-polyester-amide with controllable degradable comportment as replacement for textile

implant materials based on lactic respectively lactic-co-glycolid” (AiF-ZuTech)

“Degradable drainage implant for minimally invasive Glaucomasurgery” (BIOMAT.)

“Study of the processing properties of Nitinol for the production of textile structures”

(AiF-Zutech)


modification

Textile


Testing techniques



Why textile implants?

Biocompatible materials

Material combinations

2D- and 3D-structures

Mechanical characteristic adapted to the

environment

Adjustable macroscopic structure

Specific surface design

Controllable degradation

(Source: ITMC)


modification

Textile


Testing techniques



At present access to external

machines, pilot spinning facilities

under construction

Blending with additives

Processing of resorbable and non-

resorbable polymers

Production of mono- and multi-

filaments

Different fineness

Production of specific surfaces

Adjustments of the mechanical and

chemical properties


modification

Textile


Testing techniques

PVDF multifilament

(filament ∅ 17 µm, 30 filaments)

Spinneret

PVDF monofilament (∅ 60 µm)



Various machine technologies


Subsequent treatment of the spun

filaments

Filament structuring

Production of specific yarnstructures

Adjustment of the mechanical and

chemical characteristics

Transfer into suitable form for

processing

Coatings


modification

Textile


Testing techniques

Ply twister

Air jet texturing machine

Air-jet textured yarn

0,1 mm

False twist textured yarn

0,1 mm

Plied yarn

1 mm



Especially designed raschel warp

knitting machine

Various materials and materialcombinations

Processing of smallest quantities

Production of flat fabrics and

branched tubular structures withvarious geometries

Varying yarn fineness (diameter

from 10 to 300 µm)

Adjustable elastic characteristics


Surface structuring


modification

Textile


Testing techniques

Raschel warp knitting machine

Vascular grafts

Warp knitting

Artificial cornea



Patented 3D-braiding machine

(3rd generation)

Various materials and material

combinations

Variable fineness

3D-braiding with continuous

geometry modification

Adjustable elastic characteristics

Surface structuring

Incorporation of functional

substances

Quellenangabe: Arial 12

Bildunterschrift: Arial 16


modification

Textile


Testing techniques

Braiding

3D-braiding machine

Alloplastic cruciate ligament

3D-braids

1 mm



Aerodynamic nonwovens production

Bonding by needling

Processing of various resorbable filaments

Optimised ratio of material and volume

Structures for a guided tissue regeneration

Multi-layer structures

Production of nonwovens structures

with various shapes

Production of specific surface structures

Incorporation of bioactive substances

(e.g. micro spheres)

Especially designed reinforcements

Small scale production

Chemistry MedicineSpinningYarn

modification

Textile


Testing techniques

Nonwovens manufacturing

Aerodynamic non-

wovens production

Resorbable nonwovens

Needle loom

Micro spheres in nonwovens



Laboratory scale and industrial

weaving machines

Various materials and material

combinations

Processing of smallest quantities

Production of fabrics with different

weaves

Surface structuring


modification

Textile


Testing techniques

Weaving

Narrow weaving machine

Nitinol woven fabric



Use of external systems

Finishing of textile structures

with bioactive substances

Incorporation of unstable

thermal active substances

Formation of biofilms prevented

Improvement of the cell

adhesion

Surface structuring


modification

Textile


Testing techniques

Plasma coating(Source: iplas GmbH)

Cell cultures(Source: ITMC)

Cell cultivation in Bioreactor (Source: ACT-Lab)



Sewing and embroidering

technologies

Various materials and materialcombinations

Variable fineness

Tailoring of textile structures

Production of composites

Reinforcements

Free selection of geometries

Well-directed accumulation of

material


modification

Textile


Testing techniques

CNC-sewing machine

CNC-embroidery machineReinforcement of

artificial cornea

Stitching of Nitinol



Textile testing laboratory at

ITA

Adaptation of available testing

methods

Development of new testing

methods and equipment

Construction of new testing

devices

Testing of medical textile

products and allostaticsamples


modification

Textile


Testing techniques

Knee testing device

Friction testing deviceBladder testing device

Vascular graft testing device(IBMT)

Test of cartilage



29 Scientific employees

17 Technical employees

5 Office workers

4 Apprentices

57 Graduate research assistants


modification

Textile


Testing techniques

ITA machine halls in Aachen

“The ITA: overall view“




modification

Textile


Testing techniques

Management / Head of Department:

Univ.-Prof. Dr.-Ing. Dipl.-Wirt. Ing. Th. GriesDr.-Ing. K. Klopp (Head engineer)

Akad. Oberrat Dr.-Ing. D. Veit

Laboratories / Workshops:

Testing laboratory: M. Steffens

Microscopy: M. Rohs

Electrical laboratory: M. v. Thenen

Construction: D. Mergl

Software: Dipl.-Ing. C. Kozik

Contact us!

Research groups:

• Medical textiles: Dipl.-Ing. F. Budillon• Technical textiles: Dipl.-Ing. A. Kolkmann

• Filament yarns: Dipl.-Ing. R. Ramakers

• Spinning: Dipl.-Ing. I. Mählmann

• Weaving: Dipl.-Ing. H. Wilbrand-Ludwig

• Textile economics: N.N.

Tel. : ++49 (0) 241 / 80 956 21 Fax : ++49 (0) 241 / 80 921 49

E-mail: [email protected] http://www.ita.rwth-aachen.de



Main Focus of the Research Groups

Head of Department:

Univ.-Prof. Dr.-Ing. Dipl.-Wirt. Ing. Thomas Gries

Textile Future

starts with us!

Textile Future

made in Aachen!

ITA-Presentation:

Head of Department:


Quality Control:

up-dated versions are available as

downloads on our homepage

http://www.ita.rwth-aachen.de

Weaving Technology:

Head of Department:


The ITA as a Partner in Weaving Technology

Technical Textiles:

Head of Department:


From the Fibre to the finished Textile andComposite Part

Competencein Textile Technology

and MechanicalEngineering

The ITA as a partner for special

solutions in quality control and process analysis

Library:

Institutsdirektor:


Das ITA als Partner bei der

Informationsbeschaffung zu textilen Themen

only available in German language!

Head of Department:


From Fibre to Yarn

Competence in Textile Technology

and Mechanical Engineering

Fibre Yarn Technology:

Assembling/clothing

technology:

Head of Department:


The ITA as a Partner

in assembling/clothing technology

only available in German language!

Man-made Fibre Technology:

Head of Department:


Innovation in Dialogue With The Industry

Filament-Yarn-Technology at the Institute of Textile Technology

Medical Textiles e

Documents

Transcript of Medical Textiles e