Abstract
Therapeutic options in end stage heart failure include cardiac transplantation or mechanical circulatory support: Left Ventricular Assist Device (LVAD) or Total Artificial Heart (TAH). These devices have relatively high power requirements (5-80W). Existing power supplies to LVAD and TAH are via percutaneous drivelines with a high frequency of complications including infection. We have developed a wireless Transcutaneous Energy Transmission (TET) waveform protocol and system technology which address the major clinical drawbacks of existing systems: skin tissue thermal effect and system durability. Conventional single-channel TET solutions have significant limitations, including inefficient energy transfer characteristics and high energy density levels producing tissue thermal effects. A reduced lifetime of the internal rechargeable battery is an additional drawback. In the proposed novel system, a multi-channel, time-space multiplexed and pulsed RF transmission waveform transcutaneous power delivery approach, is presented for sustained internal energy supply to high-power rated implantable devices. The bench system prototype performance evaluation results, revealed excellent high-energy transfer efficiency and safer management of lower energy density levels. In conclusion, the proposed pulsed transmission waveform protocol and multi-channel concepts can be configured for individual high-power rated LVAD devices to effectively mitigate tissue thermal effects and to prolong backup battery lifetime.
Original language | English |
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Title of host publication | IFMBE Proceedings |
Subtitle of host publication | World Congress on Medical Physics and Biomedical Engineering |
Place of Publication | Singapore |
Publisher | Springer |
Chapter | 175 |
Pages | 945 - 950 |
Number of pages | 6 |
Volume | 68/2 |
ISBN (Electronic) | 978-981-10-9038-7 |
ISBN (Print) | 978-981-10-9037-0 |
Publication status | Published - 30 May 2018 |
Event | World Congress on Medical Physics and Biomedical Engineering: IUPESM-2018 - Prague Conference Centre, Prague, Czech Republic Duration: 3 Jun 2018 → 8 Jun 2018 |
Conference
Conference | World Congress on Medical Physics and Biomedical Engineering |
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Abbreviated title | WC-2018 |
Country | Czech Republic |
City | Prague |
Period | 3/06/18 → 8/06/18 |
Keywords
- Transcutaneous energy transfer
- TWESMI Technology
- pulsed RF transmission waveform
- chronic cardiac failure
- ventricular assist device
- LVAD
- heart transplant
- tissue temperature stability
- medical implants