Endovascular device

By employing a step difference reduction section and flexible material design in the intravascular device, the problems of unstable electrode manufacturing and poor delivery have been solved, achieving highly sensitive neural tissue sensing and stimulation, which is suitable for the diagnosis and treatment of deep brain diseases.

CN118338845BActive Publication Date: 2025-11-21EPSOM MEDICAL CO LTD
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Patent Information

Application Number
CN202380014884.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2022-10-21
Filing Date
2023-10-19
Publication Date
2025-11-21
Estimated Expiration
2043-10-19

AI Technical Summary

Technical Problem

In existing technologies, electrodes for intravascular devices are difficult to manufacture stably, and their delivery is poor due to their extremely fine shape, making it impossible to accurately sense or stimulate the activity of nerve tissue.

Method used

An intravascular device was designed, which uses a linear delivery component connected to an electrode component. The difference in outer diameter between the electrode and the delivery component is reduced by a step difference reduction part (such as an inner coil or a tubular component) to ensure a stable connection between the electrode and the delivery component. Flexible materials are used to reduce the risk of damage to blood vessels.

Benefits of technology

It achieves excellent delivery and high sensitivity of intravascular devices for sensing or stimulating neural tissue activity, and can be safely left in blood vessels for a long time, making it suitable for the diagnosis and treatment of deep brain diseases.

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Abstract

Provided is an intravascular device for sensing or stimulating activity of neural tissue and having excellent delivery to blood vessels and high sensitivity of sensing or stimulation. An intravascular device (1) configured inside a blood vessel of a living organism, the first end portion (1a) of which has an electrode for sensing or stimulating activity of neural tissue located outside the blood vessel, the intravascular device (1) having: a wire member (10) having electrical conductivity; at least one electrode member (20) provided at the first end portion (1a) and electrically connected to the wire member (10); and a step difference reducing portion (30, 40) that reduces a step difference resulting from an outer diameter difference between the outer diameter of the electrode member (20) and the outer diameter of the wire member (10), the electrical resistance value between the electrode member (20) and the second end portion (1b) of the wire member (10) on the opposite side from the first end portion (1a) being 100 Ω or less.
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