Experimental study of physical properties of artificial materials for the development of valvular heart apparatus

Август 1, 2022

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Experimental study of physical properties of artificial materials for the development of valvular heart apparatus

Содержание

2. Outline Background Materials Methods Results and discussion Conclusions
4. Pericardium Natural porcine tissue Chemically treated by 0.6% glutaraldehyde
5. Polytetrafluoroethylene (PTFE) Expanded – more porous and flexible Hydrophobic and chemically inert
6. Blanking die
7. Motorized test stand
8. Pericardium tensile test
9. ePTFE tensile test
10. Results Pericardium E=1.52 MPa UTS=5.22 MPa Elongation at breakpoint is 60.4% ePTFE E>15 MPa UTS=9.2÷11.3 MPa
11. Conclusions The elastic modulus of ePTFE samples is significantly higher than that in pericardial samples The
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Слайд 2

Outline
Background
Materials
Methods
Results and discussion
Conclusions

Слайд 3

Слайд 4

Pericardium
Natural porcine tissue
Chemically treated by 0.6% glutaraldehyde

Слайд 5

Polytetrafluoroethylene (PTFE)
Expanded – more porous and flexible
Hydrophobic and chemically inert

Слайд 6

Blanking die

Слайд 7

Motorized test stand

Слайд 8

Pericardium tensile test

Слайд 9

ePTFE tensile test

Слайд 10

Results
Pericardium
E=1.52 MPa
UTS=5.22 MPa
Elongation at breakpoint is 60.4%
ePTFE
E>15 MPa
UTS=9.2÷11.3 MPa
Elongation at breakpoint is 8-14%

Слайд 11

Conclusions
The elastic modulus of ePTFE samples is significantly higher than that

in pericardial samples
The form of stress-strain curves of ePTFE depends on the stretching direction
The next step: enhancement of quality of ePTFE sheet
Test other polymeric materials