A novel neuroprosthetic interface with the peripheral nervous system using artificially engineered axonal tracts

Area of Science:

• Biomedical Engineering
• Neuroscience
• Regenerative Medicine

Background:

• Previous work established techniques for creating transplantable living axon tracts.
• Peripheral nerve damage significantly impacts motor and sensory functions.

Purpose of the Study:

• To develop a novel neuroelectrical interface using engineered neural tissue constructs.
• To enable afferent and efferent communication between the peripheral nervous system and prosthetic devices.

Main Methods:

• Generated axon tracts up to 10 cm using continuous mechanical tension and a stretch-growth paradigm.
• Integrated a compliant multi-electrode array with neuron populations.
• Embedded the neuroelectrode construct in a hydrogel matrix and affixed it to the transected sciatic nerve.

Main Results:

• The neural interface ensures transplant stability and firm attachment to the electrode array substrate.
• Preliminary findings show the interface maintains orientation and promotes host nerve ingrowth.

Conclusions:

• The developed interface shows promise for restoring motor and sensory functions in patients with peripheral nerve damage.
• Ongoing analysis will characterize neuronal survival, synaptic integration, and functional connectivity.