Ultrasonic-electroencephalogram multifunctional electrode for deep brain stimulation

By integrating PMUT with SEEG electrodes, targeted deep brain ultrasound stimulation and EEG signal detection were achieved, solving the problem that existing electrodes could not intervene in treatment. This provides a closed-loop neuromodulation scheme, reduces the size and manufacturing cost of electrodes, and is suitable for the diagnosis and treatment of brain diseases.

CN119405322BActive Publication Date: 2026-01-20NANHU BRAIN COMPUTER CROSS RES INST
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Patent Information

Application Number
CN202411609661.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-12
Publication Date
2026-01-20
Estimated Expiration
2044-11-12

AI Technical Summary

Technical Problem

Existing SEEG electrodes can only record neural electrical activity and cannot provide timely intervention and treatment. Furthermore, ultrasound transducers are difficult to integrate with flexible electrodes, which limits the application of multifunctional neural interface systems.

Method used

The flexible piezoelectric micromechanical ultrasonic transducer (PMUT) is integrated with the SEEG electrode to form a multifunctional electrode, which enables targeted deep brain ultrasound stimulation and simultaneous detection of EEG signals. The cost is reduced by using a flexible matrix structure and low-temperature bonding technology.

Benefits of technology

It enables targeted deep brain ultrasound stimulation and EEG signal detection, provides a feasible scheme for closed-loop neural modulation, reduces electrode size and manufacturing cost, and is suitable for the diagnosis and treatment of brain diseases.

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Abstract

The application discloses an ultrasonic-electroencephalogram multifunctional electrode for deep brain stimulation, which comprises a base microtube, a PMUT electrode for deep brain ultrasonic stimulation and a SEEG electrode for electroencephalogram signal detection from inside to outside. The ultrasonic-electroencephalogram multifunctional electrode for deep brain stimulation has the functions of fixed-point ultrasonic nerve stimulation and in-situ electroencephalogram signal detection, provides strong support for future closed-loop nerve stimulation, and has the advantages of simple preparation process and low manufacturing cost.
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