Wireless Power Transfer for Smart Knee Implants
- Resource Type
- Conference
- Authors
- Jain, Manav; Stanacevic, Milutin; Willing, Ryan; Towfighian, Sherry; Salman, Emre
- Source
- 2022 IEEE International Symposium on Circuits and Systems (ISCAS) Circuits and Systems (ISCAS), 2022 IEEE International Symposium on. :1896-1900 May, 2022
- Subject
- Components, Circuits, Devices and Systems
Power, Energy and Industry Applications
Robotics and Control Systems
Signal Processing and Analysis
Wireless communication
Wireless sensor networks
Solid modeling
Three-dimensional displays
Surgery
Implants
Wireless power transfer
- Language
- ISSN
- 2158-1525
An inductive link based wireless power transfer methodology is described for a smart knee implant designed to continuously monitor the loads on the knee. The primary and secondary coil dimensions and wireless link characteristics are first optimized via an equivalent lumped electrical model. The wireless link is then simulated with more accurate 3D field simulations. The impact of the package and various layers of tissue between the coils on the quality of the link is investigated. The effects of potential misalignments between the coils are also analyzed. When the distance between the coils is 39 mm and the input power to the primary (external) coil is 2.5 W, approximately 0.35 mW of power can be received by the secondary coil that is located within the implant.