Microfilament electrode structure, preparation method and implantation method thereof

The invention discloses a microwire electrode structure and a preparation method and an implantation method thereof. The microwire electrode structure comprises a substrate which is provided with a microwire area and a welding area; each electrode wire layer comprises a plurality of microwire structures and a limiting structure which are located on a microwire area, electrode sites are arranged on the surface of one side of each microwire structure, any adjacent electrode wire layers are connected on the welding area and are relatively independent on the microwire area, and the limiting structures are fixed on the surfaces of one sides of the microwire structures; and the bonding pads are positioned on the welding area and are electrically connected with the electrode sites in a one-to-one correspondence manner. According to the microwire electrode structure, the problems that in the prior art, the microwire structure in a plane microwire electrode structure has the folding fracture risk in the implanting process, and the effective utilization rate of the wafer area is low are solved.

The abstract as published by the patent office, from CN120713531A. It describes the invention; it is not a statement of what is protected.

• Interface and electrodes

  Electrodes and arrays

What the filing appears to be about, read by published rules from its title, abstract and classification codes (A61B2562/0209, A61B2562/125, A61B5/294, A61N1/05, A61N1/0529). The claims define what a patent protects, and they are not read here.

Interface and electrodes

Everything downstream works with what the contacts pick up. Their number, size and distance from the neurons set the ceiling on the signal. The problem behind it: more contacts, closer to neurons, that still record after years in tissue that reacts to them.

Why the layer matters to the field, not a judgement of this filing. A patent family shows that protection was sought. It does not show that the technology was built, is used in a product, or works in people. The whole stack

One invention, published 2 times in 1 office. Each publication opens in Espacenet.

• ChinaCN120713531A30 Sep 2025CN120713531B2 Dec 2025 · grant

1. 4 Sep 2025First filingEarliest priority, at China. The family is counted in this year.
2. 30 Sep 2025First publicationCN120713531A, China.
3. 2 Dec 2025Grant publishedCN120713531B, China.

Dates as the offices published them. Office records are in the offices' own words and are a selection: refusals, lapses and withdrawals, and records that name an owner. Each concerns one member of the family, not the family as a whole, and another member in the same office may stand. Whether a patent is in force today is not assessed.

Organisation

NeuCyber NeuroTech · 27 families identified

Technology

Intracortical

• Bibliographic data, family members and office records: European Patent Office, Open Patent Services (the DOCDB and INPADOC databases), read 7 Oct 2026.
• The record itself, with its claims and description: CN120713531A in Espacenet
• Counted as a BCI patent family: classified A61N1/0529 (electrodes for brain stimulation); filed by 北京芯智达神经技术有限公司, an organisation already in the graph; a hardware layer of the stack, filed by a company that builds interfaces. How families are found and judged