Clinical translation of ultrasoft Fleuron probes for stable, high-density and tissue-wide bidirectional brain interfaces
Summary
Axoft published the scientific basis for the FINESSE first-in-human study on medRxiv, detailing clinical translation of Fleuron — an ultra-soft, ultra-low-k dielectric material — in depth electrodes with up to 1,024 channels on a single lead. Rodent studies demonstrated 18-month stable single-unit recording with significantly less scarring than polyimide at 3, 6, and 9 months. Large animal and first human studies showed safe implantation, high-density single-neuron recording without drift, detection of consciousness biomarkers, and 8x more brain tissue coverage than conventional probes at 128 channels.
Why it matters
Axoft's Fleuron preprint is the foundational science paper for a new generation of ultra-soft BCI materials. Eighteen-month stable single-unit recording in rodents, validated in large animals and human pilot studies, with 8x tissue coverage improvement — this is a comprehensive technical case that will influence neural interface material choices across the field for the next decade.
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