期刊
ANNALS OF BIOMEDICAL ENGINEERING
卷 41, 期 1, 页码 131-141出版社
SPRINGER
DOI: 10.1007/s10439-012-0623-3
关键词
Scavenging; Automatic power-generating system; Power supplies; Cardiac wall motion; MRI; Unbalance; Wrist watch
资金
- Department of Cardiology at the Bern University Hospital
- Commission for Technology and Innovation [KTI-CTI 12589.1 PFLS-LS]
Energy-harvesting devices attract wide interest as power supplies of today's medical implants. Their long lifetime will spare patients from repeated surgical interventions. They also offer the opportunity to further miniaturize existing implants such as pacemakers, defibrillators or recorders of bio signals. A mass imbalance oscillation generator, which consists of a clockwork from a commercially available automatic wrist watch, was used as energy harvesting device to convert the kinetic energy from the cardiac wall motion to electrical energy. An MRI-based motion analysis of the left ventricle revealed basal regions to be energetically most favorable for the rotating unbalance of our harvester. A mathematical model was developed as a tool for optimizing the device's configuration. The model was validated by an in vitro experiment where an arm robot accelerated the harvesting device by reproducing the cardiac motion. Furthermore, in an in vivo experiment, the device was affixed onto a sheep heart for 1 h. The generated power in both experiments-in vitro (30 mu W) and in vivo (16.7 mu W)-is sufficient to power modern pacemakers.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据