Based on fundamental considerations concerning implantable valve actuating mechanisms and a review of recent low-energy actuators, we propose four concepts to adjust or switch an implantable valve. The Bellow-Concept makes use of a standard actuator and hermetic encapsulation with flexible bellows, where force can be transmitted by deflection of the bellows. The Shape-Memory-Alloy-Concept considers a biocompatible Shape-Memory-Alloy (SMA) actuator, which can be directly immersed in body liquids. The Stepper-Motor-Concept makes use of a hermetically encapsulated rotatory actuator, with the rotatory action being transmitted magnetically through the rigid encapsulation wall. Finally, the Magnetic-Spring-Concept proposes a hermetically encapsulated linear actuator and linear magnetic force transmission through the rigid encapsulation wall. We found the Magnetic-Spring-Concept the smallest and most simple one. © 2009 Springer-Verlag.
CITATION STYLE
Biehl, M., & Scholz, O. (2009). Basic concepts for active implantable valve development. In IFMBE Proceedings (Vol. 25, pp. 57–60). Springer Verlag. https://doi.org/10.1007/978-3-642-03887-7_16
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