Tiny blood test implant could help treat cancer

A tiny implant that conducts blood tests under the skin could greatly improve the tracking and treatment of cancer and other diseases, researchers claim.

The 14 millimetre-long device is packed with miniaturised electronics, including five sensors and a WiFi transmitter.

Power is delivered through the skin by a battery patch which also relays test data via Bluetooth. Results can be displayed on a doctor’s mobile phone or laptop.