Interventional device for tubular body

An interventional device for a tubular body, the interventional device comprising: a stent, which can be switched between a first state and a second state, wherein the diameter of the stent in the second state is greater than that in the first state; at least one puncture portion, which is arranged on the stent, wherein the puncture portion is configured to puncture a wall of the tubular body when the stent is in the second state; and at least one electrode, which is arranged on the at least one puncture portion, wherein the electrode is configured to extend out of the tubular body from an area of the wall that is punctured by the puncture portion. By means of the solution of the present disclosure, the effective implantation of the electrode can be achieved on the basis of the interventional device, and the implanted electrode can be in direct contact with a biological tissue target area outside of the tubular body, thereby achieving direct and unobstructed signal interaction and greatly improving the effects of collecting signals and applying stimulation by means of the electrode.

The abstract as published by the patent office, from EP4763086A1. It describes the invention; it is not a statement of what is protected.

• Surgical access

  Endovascular access

• Interface and electrodes

  Electrodes and arrays

• Stimulation

  Stimulation

What the filing appears to be about, read by published rules from its title, abstract and classification codes (A61B5/0538, A61B5/076, A61B5/293, A61B5/6853, A61B5/6859). The claims define what a patent protects, and they are not read here.

Surgical access

A probe soft enough for the brain to tolerate is too soft to push in by hand, and each route into the head has its own risk. The problem behind it: placing many contacts exactly, without injuring tissue or vessels, in an operation short and repeatable enough to offer widely.

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

• International (PCT)a route to several countries, not a countryWO2025025735A16 Feb 2025
• ChinaCN119423772A14 Feb 2025CN119423772B30 Sep 2025 · grantCN121489492A10 Feb 2026
• European Patent Officea route to several countries, not a countryEP4763086A124 Jun 2026

1. 1 Aug 2023First filingEarliest priority, at China. The family is counted in this year.
2. 13 May 2024ApplicationsFiled at International (PCT), European Patent Office.
3. 6 Feb 2025First publicationWO2025025735A1, International (PCT).
4. 30 Sep 2025Grant publishedCN119423772B, 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

StairMed · 46 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: EP4763086A1 in Espacenet
• Counted as a BCI patent family: classified A61B5/293 (invasive electrodes for brain recording); filed by 上海阶梯医疗科技有限公司, 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