Flexible electrode for peripheral nerves and manufacturing method thereof

The present disclosure relates to a flexible electrode for a peripheral nerve and a method of manufacturing the same. There is provided a flexible electrode for a peripheral nerve, the flexible electrode comprising an implant portion implantable to a truncated peripheral nerve or nerve stump and configured to acquire or apply an electrical signal inside and on the surface of a peripheral nerve tract, the flexible electrode comprises a first insulating layer, a second insulating layer and a wire layer located between the first insulating layer and the second insulating layer. An implant portion including one or more electrode sites, each electrode site electrically coupled to one of the leads in the lead layer and contacting a peripheral nerve after implantation of the flexible electrode to acquire an electrical signal from the peripheral nerve and transmit the acquired electrical signal through the lead, or apply an electrical signal received through the lead to the peripheral nerve; and the implantation part is provided with a hole so as to facilitate the reconstruction of the peripheral nerve and be in close contact with the peripheral nerve after the reconstruction.

The abstract as published by the patent office, from US20250375140A1. It describes the invention; it is not a statement of what is protected.

• Interface and electrodes

  Electrodes and arrays · Peripheral interfaces

• Packaging

  Packaging and hermeticity

• Stimulation

  Stimulation · Closed loop

What the filing appears to be about, read by published rules from its title, abstract and classification codes (A61B2562/0209, A61B2562/125, A61B2562/164, A61B5/24, A61B5/263). 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.

Packaging

Body fluid destroys unprotected electronics. An implant meant to last has to stay sealed for years while passing every channel through its wall. The problem behind it: a seal that lasts as long as the patient needs it, at a size that leaves room for the channels.

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

• ChinaCN115054258A16 Sep 2022CN115054258B12 Nov 2024 · grantCN119302663A14 Jan 2025
• International (PCT)a route to several countries, not a countryWO2023240693A121 Dec 2023
• United StatesUS20250375140A111 Dec 2025US12642471B22 Jun 2026 · grant

1. 17 Jun 2022First filingEarliest priority, at China. The family is counted in this year.
2. 29 Jun 2022ApplicationsFiled at International (PCT), United States.
3. 16 Sep 2022First publicationCN115054258A, China.
4. 12 Nov 2024Grant publishedCN115054258B, China.
5. 10 Dec 2025Owner recordedUnited States, on US20250375140A1: assignment; owner named: SHANGHAI STAIRMED TECHNOLOGY CO., LTD., CHINA.
6. 2 Jun 2026Grant publishedUS12642471B2, United States.
7. 3 Jun 2026Office recordInternational (PCT), on WO2023240693A1: ep: public notification in the ep bulletin as address of the adressee cannot be established.

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

StairMed · 46 families identified

Technology

Peripheral / neuromotor

• Bibliographic data, family members and office records: European Patent Office, Open Patent Services (the DOCDB and INPADOC databases), read 11 Oct 2026.
• The record itself, with its claims and description: US20250375140A1 in Espacenet
• Counted as a BCI patent family: classified A61B5/38 (electroencephalography with stimuli); filed by 上海阶梯医疗科技有限公司, an organisation already in the graph; describes neural hardware or methods without naming the field. How families are found and judged