Rechargeable technology for ICDs is an active area of research and development. Some devices in early trials have incorporated wireless charging technology, and at least one manufacturer has brought a rechargeable ICD to market in certain territories. The landscape is evolving and availability in the UK may increase over time.
The challenge with rechargeable ICDs is ensuring that the device always has sufficient charge to respond instantly to a dangerous arrhythmia. Unlike a phone or hearing aid, an ICD cannot be allowed to run low. Any rechargeable system needs robust safeguards and monitoring to ensure charge levels never compromise the ability to deliver therapy.
Currently, most ICDs use a non-rechargeable lithium battery with a typical lifespan of seven to twelve years depending on how frequently the device delivers therapy. When the battery reaches a certain threshold, the generator is replaced in a routine procedure. Your ICD clinic monitors battery status at every appointment and via remote monitoring, so you will always have plenty of notice before a replacement is needed.