Implantable flexible electrode, device, and kit

An implantable flexible electrode includes an implantation assembly and a proximal contact part. The implantation assembly is made of a flexible material, and includes an auxiliary implantation part, a microelectrode part, a macroelectrode part, and a lead part electrically connected to the microelectrode part and the macroelectrode part, a macroelectrode site of the macroelectrode part is used to record local field potential information after implantation, a microelectrode site of the microelectrode part is used to record single-unit action potential information, and the dimension of an end of the microelectrode part distal to the macroelectrode part is smaller than the dimension of an end of the microelectrode part proximal to the macroelectrode part. The proximal contact part is electrically connected to the lead part. The implantable flexible electrode enables simultaneous recording of local field potential information and single-unit action potential information to provide comprehensive information about neural activity.

The abstract as published by the patent office, from US12426823B1. It describes the invention; it is not a statement of what is protected.

• Interface and electrodes

  Electrodes and arrays · Peripheral interfaces

• Stimulation

  Stimulation · Closed loop

What the filing appears to be about, read by published rules from its title, abstract and classification codes (A61B18/14, A61B2018/00577, A61B2018/00642, A61B2018/00839, A61B2562/0209). 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.

Stimulation

Restoring sensation, sight or movement needs information going in, and a therapy that adapts needs to sense and stimulate at once. The problem behind it: evoking a precise, stable effect without damaging tissue or electrodes, and without blinding the recording.

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 3 times in 2 offices. Each publication opens in Espacenet.

• ChinaCN118452935A9 Aug 2024CN118452935B27 Sep 2024 · grant
• United StatesUS12426823B130 Sep 2025 · grant

1. 11 Jul 2024First filingEarliest priority, at China. The family is counted in this year.
2. 9 Aug 2024First publicationCN118452935A, China.
3. 27 Sep 2024Grant publishedCN118452935B, China.
4. 8 Jul 2025ApplicationFiled at United States.
5. 30 Sep 2025Grant publishedUS12426823B1, United States.

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

BCIFlex · 24 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: US12426823B1 in Espacenet
• Counted as a BCI patent family: classified A61B5/293 (invasive electrodes for brain recording); filed by 北京智冉医疗科技有限公司, an organisation already in the graph; describes neural hardware or methods without naming the field; cites a family already accepted. How families are found and judged