Flexible nerve tract electrode and preparation method thereof

Abstract

The invention relates to a flexible nerve tract electrode, which comprises a flexible substrate, an electrode unit, an electrode lead, a lead welding spot and an insulating layer, wherein the electrode lead is electrically connected with the electrode unit and the lead welding spot; the electrode unit, the electrode lead and the lead welding spot form an electrode assembly together; the electrode assembly is arranged on the flexible substrate; the insulating layer is arranged on the flexible substrate and covers the electrode lead; and the electrode unit is electrically connected with a nerve tract. The invention also relates to a preparation method for the flexible nerve tract electrode. The flexible nerve tract electrode can be used for distinguishing moving nerve tracts and sensory nerve tracts in a nerve trunk, and can realize functions of a nerve cannula and provide space protection for growth of broken and injured nerves; functional electrical stimulation can be applied to the broken and injured nerves, so that the growth of the broken and injured nerves is accelerated; and the repair state of the broken and injured nerves can be monitored in real time by acquiring electrical physiological information at two ends of the broken and injured nerves. Moreover, the flexible nerve tract electrode can also be used for acquiring nerve information of normal nerve tracts to realize intelligent control of external instruments.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a flexible nerve bundle electrode, and also to a preparation method of the flexible nerve bundle electrode. Background technique [0002] Peripheral nerve injury is very common. Currently, there are two most commonly used methods for repairing peripheral nerve injury: 1. For larger nerve defects, autologous nerve transplantation is usually used; 2. For smaller nerve defects In this case, the epineurium or epineurium is usually sutured using an end-to-end suture method. The peripheral nerves are mostly mixed nerves, and the nerve bundles are wrapped with nerve fibers connecting different motor units and various sensory nerve fibers. Blind docking may lead to misconnection and twisting of sensory nerve fibers and motor nerve fibers, resulting in incomplete recovery of the function of the ruptured nerve or residual dysfunction, resulting in poor clinical results. Intraoperative ra...

AI Technical Summary

Problems solved by technology

The advantage of this kind of electrode is that it is closer to the target nerve cells, and the implantation method is simple; the disadvantage is that it will cause damage to the nerve tissue, and the use of this electrode alone cannot achieve the fixation of both ends of the broken nerve.

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