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Biology subjects

Fanelli, A.

Publications and source records attributed to Fanelli, A..

2 recordsLinked to original sources

Degradable endovascular neural interface for minimally invasive neural recording and stimulation

Neural recording and stimulation have been widely used to mitigate traumatic injuries, neurodegenerative diseases or mental disorders. Most neural interfaces commonly require invasive surgery, potentially entailing both transient and permanent complications. A promising strategy designed to overcome these risks involves exploiting the cerebrovascular system as an access route to the neural tissue. Here we present a novel endovascular neural interface for neural recording and stimulation, fully polymeric and degradable. This concept might allow for better integration of the device in the body, reduced inflammatory reaction, the possibility of replacing the implant after degradation, and avoiding removal surgeries. The vasculatures strategic distribution and the use of soft polymers for the devices fabrication will permit targeting both the brain vasculature and the peripheral system. Therefore, this novel endovascular neural interface will broaden the range of applications from neurological diseases and mental disorders to bioelectronics medicine.

bioengineering↗

All-polymeric transient neural probe for prolonged in-vivo electrophysiological recordings

Transient bioelectronics has grown fast, opening possibilities never thought before. In medicine, transient implantable devices are interesting because they could eliminate the risks related to surgical retrieval and reduce the chronic foreign body reaction. However, despite recent progress in this area, the short functional lifetime of devices due to short-lived transient metals, which is typically a few days or weeks, still limits the potential of transient medical devices. We report that a switch from transient metals to an entirely polymer-based approach allows for a slower degradation process and a longer lifetime of the transient probe, thus opening new possibilities for transient medical devices. As a proof-of-concept, we fabricated all-polymeric transient neural probes that can monitor brain activity in mice for a few months rather than a few days or weeks. Also, we extensively evaluated the foreign body reaction around the implant during the probes degradation. This kind of devices might pave the way for several applications in neuroprosthetics.

bioengineering↗