Fully Wireless Implantable Device for Recording and Stimulating Bioelectric Events

Longitudinal electrophysiology or behavioral modulation studies in mice are logistically challenging due to the need for frequent data collection or unrestricted testing environments. Wireless miniature devices have evolved from tethered recording systems, which placed restrictions on the type of environment and behavioral tasks performed during studies. Battery-powered implantable devices are excessively large due to the onboard battery and collects a limited amount of data based on the battery's capacity. These devices do not offer multiple functionalities such as biopotential recording with electrical stimulation.

Researchers at Purdue University have developed a batteryless, fully implantable device that can record and stimulate bioelectric activity in small animals, bypassing the limitations of battery-powered devices and decreasing restrictions on testing environments. The implantable bionode is compatible with the largest reported wireless power transfer (WPT) environment for rodents as small as mice. This device includes temperature sensing and electrode impedance measurement.

Advantages:

-Does not require batteries

-Wireless and implantable

-Expands testing environments

-Largest reported WTP environment

-Uses commercially available hardware

Potential Applications:

-Longitudinal studies in animals

-Behavioral modulation studies in animals

TRL: 5

Intellectual Property:

Keywords: implantable bionode, batteryless device, wireless power transfer, WPT environment, bioelectric activity recording, electrical stimulation, temperature sensing, electrode impedance measurement, longitudinal studies, behavioral modulation