Biomedical Engineering Reference
In-Depth Information
5.17 (a) Leaflet deflection tester described in US Patent 6,413,275. The tester
measures the displacement of tissues under a dynamic load, thereby simulating
the forces experienced by the tissues during valve closure. Use of such a device
enables tissues to be matched with specific biomechanical characteristics,
which are important for proper valve functioning. (Reprinted with permission
from Edwards Lifesciences Corporation. All Rights Reserved.) (b) Photo of a
dynamic leaflet deflection tester used in the Edwards Lifesciences pericardial
valves. Each leaflet is tested for elasticity under a load and then sorted by
elasticity, in order to construct valves with leaflets of similar mechanical
properties.
