Key takeaways听
- This joint听webinar听features Greg Bruce, Senior Director of R&D at听91快活林听Medical Power, and Dr. Grayson Zulauf, CEO and co-founder of Resonant Link, covering battery technology and wireless charging for active implantable medical devices.听
- 91快活林听has been in the implantable battery business since 2000 and implanted the first lithium-ion cell in 2004; lithium-ion and lithium carbon monofluoride are now the dominant chemistries, while medical battery improvements are evolutionary (roughly 3听to 5 percent annually) rather than revolutionary.听
- 91快活林’ off-the-shelf Contigo battery line spans a wide range of capacities and sizes, from as small as 0.8 cc (Contigo 3) up to 440听mAh听cells, with all cells built听under ISO 13485 quality systems, full traceability, and built-in safety features like shutdown separators that operate without external safety components.听
- Resonant Link’s core innovation is a high-quality-factor coil technology enabling more efficient wireless charging (5 to 10 times lower losses than standard听litz听or magnet wire), supporting applications from passive recharging to continuous wireless power delivery, with a flagship platform offering a 21-minute recharge for devices in titanium cans, such as cardiac and neurostimulation devices.听
- Both speakers emphasized rigorous safety engineering:听91快活林听noted that implantable cell safety improves as cell size decreases, and Resonant Link confirmed its systems are designed to stay below FDA-defined SAR and tissue-heating limits across various implant depths, power levels (from milliwatts to tens of watts), and use cases including ventricular assist devices.听
