A Modified Wireless Power Transfer System for Medical Implants
Wireless Power Transfer (WPT) is a promising technique, yet still an experimental solution, to replace batteries in existing implants and overcome the related health complications. However, not all techniques are adequate to meet the safety requirements of medical implants for patients. Ensuring a c...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-05-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/10/1890 |
| _version_ | 1811263761495883776 |
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| author | Yosra Ben Fadhel Sana Ktata Khaled Sedraoui Salem Rahmani Kamal Al-Haddad |
| author_facet | Yosra Ben Fadhel Sana Ktata Khaled Sedraoui Salem Rahmani Kamal Al-Haddad |
| author_sort | Yosra Ben Fadhel |
| collection | DOAJ |
| description | Wireless Power Transfer (WPT) is a promising technique, yet still an experimental solution, to replace batteries in existing implants and overcome the related health complications. However, not all techniques are adequate to meet the safety requirements of medical implants for patients. Ensuring a compromise between a small form factor and a high Power Transfer Efficiency (PTE) for transcutaneous applications still remains a challenge. In this work, we have used a resonant inductive coupling for WPT and a coil geometry optimization approach to address constraints related to maintaining a small form factor and the efficiency of power transfer. Thus, we propose a WPT system for medical implants operating at 13.56 MHz using high-efficiency Complementary Metal Oxide-Semiconductor (CMOS) components and an optimized Printed Circuit Coil (PCC). It is divided into two main circuits, a transmitter circuit located outside the human body and a receiver circuit implanted inside the body. The transmitter circuit was designed with an oscillator, driver and a Class-E power amplifier. Experimental results acquired in the air medium show that the proposed system reaches a power transfer efficiency of 75.1% for 0.5 cm and reaches 5 cm as a maximum transfer distance for 10.67% of the efficiency, all of which holds promise for implementing WPT for medical implants that don’t require further medical intervention, and without taking up a lot of space. |
| first_indexed | 2024-04-12T19:51:03Z |
| format | Article |
| id | doaj.art-6438069af5cf4ab5a932d425b9f71100 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-12T19:51:03Z |
| publishDate | 2019-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-6438069af5cf4ab5a932d425b9f711002022-12-22T03:18:50ZengMDPI AGEnergies1996-10732019-05-011210189010.3390/en12101890en12101890A Modified Wireless Power Transfer System for Medical ImplantsYosra Ben Fadhel0Sana Ktata1Khaled Sedraoui2Salem Rahmani3Kamal Al-Haddad4Research Laboratory of Biophysics and Medical Technology (BMT) at High Institute of Medical Technologies of the University of Tunis El-Manar, 1002 Tunis, TunisiaResearch Laboratory of Biophysics and Medical Technology (BMT) at High Institute of Medical Technologies of the University of Tunis El-Manar, 1002 Tunis, TunisiaDepartment of Electrical and Computer Engineering, King Abdulaziz University, Jeddah 21589, Saudi ArabiaResearch Laboratory of Biophysics and Medical Technology (BMT) at High Institute of Medical Technologies of the University of Tunis El-Manar, 1002 Tunis, TunisiaCanada Research Chair in Energy Conversion and Power Electronics CRC-ECPE École de Technologie Supérieure, 1100 Notre-Dame, Montréal, QC H3C 1K3, CanadaWireless Power Transfer (WPT) is a promising technique, yet still an experimental solution, to replace batteries in existing implants and overcome the related health complications. However, not all techniques are adequate to meet the safety requirements of medical implants for patients. Ensuring a compromise between a small form factor and a high Power Transfer Efficiency (PTE) for transcutaneous applications still remains a challenge. In this work, we have used a resonant inductive coupling for WPT and a coil geometry optimization approach to address constraints related to maintaining a small form factor and the efficiency of power transfer. Thus, we propose a WPT system for medical implants operating at 13.56 MHz using high-efficiency Complementary Metal Oxide-Semiconductor (CMOS) components and an optimized Printed Circuit Coil (PCC). It is divided into two main circuits, a transmitter circuit located outside the human body and a receiver circuit implanted inside the body. The transmitter circuit was designed with an oscillator, driver and a Class-E power amplifier. Experimental results acquired in the air medium show that the proposed system reaches a power transfer efficiency of 75.1% for 0.5 cm and reaches 5 cm as a maximum transfer distance for 10.67% of the efficiency, all of which holds promise for implementing WPT for medical implants that don’t require further medical intervention, and without taking up a lot of space.https://www.mdpi.com/1996-1073/12/10/1890wireless power transferactive implantresonant inductive couplingpower transfer efficiencyform factorcoilDC/AC converter |
| spellingShingle | Yosra Ben Fadhel Sana Ktata Khaled Sedraoui Salem Rahmani Kamal Al-Haddad A Modified Wireless Power Transfer System for Medical Implants Energies wireless power transfer active implant resonant inductive coupling power transfer efficiency form factor coil DC/AC converter |
| title | A Modified Wireless Power Transfer System for Medical Implants |
| title_full | A Modified Wireless Power Transfer System for Medical Implants |
| title_fullStr | A Modified Wireless Power Transfer System for Medical Implants |
| title_full_unstemmed | A Modified Wireless Power Transfer System for Medical Implants |
| title_short | A Modified Wireless Power Transfer System for Medical Implants |
| title_sort | modified wireless power transfer system for medical implants |
| topic | wireless power transfer active implant resonant inductive coupling power transfer efficiency form factor coil DC/AC converter |
| url | https://www.mdpi.com/1996-1073/12/10/1890 |
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