Biomedical Engineering Reference
In-Depth Information
Table 5.1 Representative examples of the different types of valves currently available
Valve type
Representative
Advantages
Disadvantages
example
Mechanical
Lifetime durability Quality of life
bileaflet
restrictions due to
pyrolytic
Coumadin
carbon
Potential for
thromboembolic event
Tissue,
Good
Difficult surgical
porcine,
hemodynamics
procedure
stentless
and
Limited durability due to
biocompatibility
structural deterioration,
No need for
calcification
Coumadin
Tissue,
Fair
Standard surgical
porcine,
hemodynamics
method
stented
Good
Limited durability due to
biocompatibility
structural deterioration,
No need for
calcification
Coumadin
Long clinical
history
Tissue,
Good
More difficult
equine
hemodynamics
surgical method
pericardial,
Good
Short clinical
stentless
biocompatibility
experience
￿ ￿ ￿ ￿ ￿
No need for
Coumadin
Tissue,
Good
Standard surgical
bovine
hemodynamics
method
pericardial,
Good
Durability limited to
stented
biocompatibility
calcification
No need for
Coumadin
Long history of
clinical success
 
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