Flexible electrode for peripheral nerve and method for manufacturing same

A flexible electrode for a peripheral nerve, the flexible electrode comprising an implantation portion that is capable of being implanted into a truncated peripheral nerve or a nerve stump, wherein:

• the flexible electrode comprises a first insulating layer, a second insulating layer, and a wire layer located between the first insulating layer and the second insulating layer;
• the implantation portion comprises one or more electrode sites, each of which is electrically coupled to one of wires in the wire layer, and is in contact with the peripheral nerve after implantation of the flexible electrode to acquire an electrical signal from the peripheral nerve and transmit the acquired electrical signal via the wire, or to apply a stimulation electrical signal received via the wire to the peripheral nerve;
• and
• the implantation portion has pores to facilitate reconstruction of the peripheral nerve and to be in close contact with the peripheral nerve after the reconstruction,
• wherein the implantation portion comprises an outer annular portion and one or more extension portions extending inwards respectively from the outer annular portion, wherein the one or more extension portions and the annular portions are adapted to be disposed internal to the truncated peripheral nerve or the nerve stump, wherein the annular portion defines a plane that is parallel to a cross-sectional area of the truncated peripheral nerve or the nerve stump, the one or more electrode sites are located on the one or more extension portions, and a respective wire in the wire layer extends to a corresponding one of the electrode sites along at least a portion of the outer annular portion and one of the one or more extension portions.