Implantable stretchable flexible neural electrode, electrode group, and electrode array

An implantable stretchable flexible neural electrode, electrode group, and electrode array, manufacturing methods, and implantation methods. The implantable stretchable flexible neural electrode comprises an electrode wire (10) and a flexible insulating part (20) covering the electrode wire (10). The flexible neural electrode further comprises: a spiral structure (SS) of the electrode wire (10) and the flexible insulating part (20); the spiral structure (SS) can be stretched; an electrode point (30) and an auxiliary implantation structure (40) are provided at the spiral structure (SS); the electrode point (30) is electrically connected to the electrode wire (10) and is exposed from the flexible insulating part (20); the auxiliary implantation structure (40) is configured to, under the action of an external force, drive the spiral structure (SS) to stretch. The achievable length of the flexible neural electrode in the effective area can be greatly improved, the flexibility of operation of implanting the flexible neural electrode into a target tissue is improved, and the stability of the flexible neural electrode after the flexible neural electrode is implanted into the target tissue is ensured.

The abstract as published by the patent office, from US20260240478A1. It describes the invention; it is not a statement of what is protected.

• Interface and electrodes

  Electrodes and arrays · Peripheral interfaces

What the filing appears to be about, read by published rules from its title, abstract and classification codes (A61B2562/0209, A61B2562/125, A61B5/24, A61B5/291, A61B5/293). 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 7 times in 4 offices. Each publication opens in Espacenet.

• International (PCT)a route to several countries, not a countryWO2023186052A15 Oct 2023WO2023186052A95 Dec 2024
• ChinaCN116919408A24 Oct 2023CN116919408B20 Jun 2025 · grant
• European Patent Officea route to several countries, not a countryEP4501236A15 Feb 2025EP4501236A414 May 2025
• United StatesUS20260240478A120 Aug 2026

1. 2 Apr 2022First filingEarliest priority, at China. The family is counted in this year.
2. 31 Mar 2023ApplicationsFiled at International (PCT), European Patent Office, United States.
3. 5 Oct 2023First publicationWO2023186052A1, International (PCT).
4. 20 Jun 2025Grant publishedCN116919408B, 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

BCIFlex · 24 families identified

• 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: US20260240478A1 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