Low-damage implanted nerve electrode

Abstract

The invention relates to a low-damage implanted nerve electrode. The low-damage implanted nerve electrode comprises a base portion, a connecting portion and a handle portion; flexible hinges are connected between the base portion and the connecting portion; and one end of the handle portion is connected with the connecting portion. According to the low-damage implanted nerve electrode of the invention, the base is designed based on a flexible mechanism design ideal, and therefore, coupling degree between the electrode and an brain tissue interface can be enhanced, and fretting damage caused by long-term contact between the electrode and a nerve tissue can be decreased in a multi-degree-of-freedom manner; the front end of the handle is designed to a semicircle corner, so that fretting damage can be further reduced; and the exterior of the electrode is provided with an outwards-protruding streamline degradable coating, so that electrode implantation damage can be reduced. The implantation shape of the electrode and the fretting working state shape of the electrode do not interfere each other; acute injuries are smaller when the electrode is implanted; when the electrode works for a long time, fretting damage can be decreased in a plurality of directions; damage to nerve cells can be decreased through the integration of many aspects; the reliability of the micro electrode can be improved; and the nerve electrode can be left in vivo for a long term stably.

Description

technical field [0001] The invention relates to medical equipment, in particular to a low-damage implantable nerve electrode, which is mainly used for reducing the implantation damage and fretting damage of the nerve electrode. technical background [0002] As a key component connecting nerve tissue and external equipment, neural electrodes have broad application prospects in clinical applications such as epilepsy, Parkinson's disease, spinal cord injury and other neurological diseases adjuvant therapy. At present, due to the autoimmune response of brain tissue, the long-term life of neural electrodes is limited, mainly due to the acute damage to the brain tissue during the implantation process and the fretting damage caused by long-term contact with the brain tissue after the electrode is implanted. When the injury heals, a fibrous or cellular tissue wrap will be formed on the surface of the electrode, thereby blocking the electrical signal transmission between the nerve el...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the shortcomings of previous nerve electrodes that can not effectively reduce fretting damage and lack of consideration for implantation damage. According to the principle of compliant mechanism design combined with the design method of coating materials, a new type of electrode with low implantation damage and fretting is designed. Damaged nerve electrodes

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