Heart Valve Poster
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Exploding bubbles can lead to damaged surfaces effects of cavitation Engineering objectives Design a product that ensures: smooth flow no/minimal backflow durable replacements in USA, annually 106,000 over 75 3% over 85 4% over 65 2% valvular disease is on the rise ME 4253 BIOMATERIALS ENGINEERING Tan Keng Ho Sam Chin Tao Ren Divij Sood Haidar Ali B Zainol Abidin Loh Jing Kang Nian Wee Wu Raunak Biswas Wasi Ahmed Mesbahuddin HEART VALVE { } Cavitation, Excess tissue growth around the sewing rings Formation of Pannus (scar tissue) Stuck Leaflets (Impingement) 1 Formation of Thrombus thrombus (blood clot) Wear and Tear 2 MODES of FAILURE Inadequate anticoagulation drugs are the cause of thrombosis. MATERIALS Tri-leaflet Design for Stuck Leaflets Clinical Test It allows central flow characteristics - similar to natural heart valve rather than a peripheral flow. Clinical trials of new tri-leaflet heart valves have finished in Russia successfully. (Roscardioinvest Ltd. - Russian specialist in mechanical heart valve manufacturing) PROPOSED SOLUTION Titanium Provides the valve with a strong, light and rigid strengthening ring (hidden under the sewing cuff in picture) Sewing cuff , used to attach the valve to the heart Polyester Pyrolytic Carbon Bileaflets and valve inner ring are made of pyrolytic carbon WHY HEART VALVES?
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ME4253 Heart Valve Poster
Transcript of Heart Valve Poster
Exploding bubbles can lead to damaged surfaces
effects of cavitation
Engineering objectivesDesign a product that ensures:
smoothflow
no/minimalbackflow
durable
replacements in USA, annually106,000
over 753%
over 854%
over 652%
valvular disease is on the rise
ME 4253 BIOMATERIALS ENGINEERING
Tan Keng Ho Sam Chin Tao Ren Divij Sood Haidar Ali B Zainol Abidin Loh Jing Kang
Nian Wee Wu Raunak Biswas Wasi Ahmed Mesbahuddin
HEART VALVE{ }
Cavitation,
Excess tissue growth around the sewing rings
Formation of Pannus (scar tissue)
Stuck Leaflets (Impingement)1
Formation of Thrombus
thrombus (blood clot)
Wear and Tear2MODES of FAILURE
Inadequate anticoagulation drugs are the cause of thrombosis.
MATERIALS
Tri-leaflet Design
for Stuck Leaflets
Clinical Test
It allows central flow characteristics - similar to natural heart valve rather than a peripheral flow.
Clinical trials of new tri-leaflet heart valves have finished in Russia successfully.
(Roscardioinvest Ltd. - Russian specialist in mechanical heart valve manufacturing)
PROPOSED
SOLUTION
TitaniumProvides the valve with a strong, light and rigid strengthening ring (hidden under the sewing cuff in picture)
Sewing cuff, used to attach the valve to the heart
Polyester
Pyrolytic CarbonBileaflets and valve inner ring are made of pyrolytic carbon
WHY
HEART VALVES?
