Electrode for nerve electrophysiology monitoring in high field intensity magnetic resonance compatible technology

Abstract

The invention belongs to the field of medical instruments and auxiliary devices, and in particular relates to an electrode for nerve electrophysiology monitoring in high field intensity magnetic resonance compatible technology. The electrode comprises a probe electrode and a pin electrode, wherein the probe electrode is a spherical probe electrode, and the pin electrode is a pin-shaped electrode. The spherical probe electrode is composed of a head portion, an electrode rod, a handle, a wire and a plug. The pin type electrode is composed of a pin-shaped head portion, a handle, a wire and a plug. The wire penetrates through the handle to be welded with the head portion through silver, and the other end of the wire is rivet joint with the plug. A high field intensity magnetic field has small influence on the electrode for monitoring, and a heat effect and a displacement effect are small. The electrode for monitoring does not generate extra current and tissue burn, and can be safely applied in a high field intensity environment without interfering magnetic resonance imaging. A recording electrode does not need to be removed when nerve electrophysiology monitoring is performed, image analysis is not influenced, and operation is convenient, simple and standard.

Description

technical field [0001] The invention belongs to the field of medical equipment and auxiliary devices, and relates to an intraoperative monitoring device used in a magnetic resonance imaging (Magnetic Resonance Imaging, MRI) environment, in particular to an electrode for intraoperative neurophysiological monitoring compatible with high-field magnetic resonance. Background technique [0002] In current clinical treatment, tumor surgery in the functional area is aimed at maximum tumor resection and minimum functional damage, and the combined application of intraoperative neurophysiological monitoring and intraoperative magnetic resonance real-time image navigation is currently the key to improving tumor resection rate and reducing postoperative trauma. An important measure of the incidence of neurological impairment. In clinical practice, due to the interaction of electromagnetic fields to produce thermal effects, ferromagnetic metal displacement effects, magnetoelectric effect...

AI Technical Summary

Problems solved by technology

In clinical practice, due to the interaction of electromagnetic fields to produce thermal effects, ferromagnetic metal displacement effects, magnetoelectric effects, etc., problems such as brain tissue damage, monitoring failure, and MRI image distortion may occur during the combined application of the above two. At the same time, the current Most of the monitoring electrodes used are stainless steel electrodes (paramagnetic materials), which have the following defects: they can cause local magnetic susceptibility changes, which appear as "artifacts" on MRI images

[0003] At present, clinical practice urgently needs high-field magnetic resonance compatible probe electrodes and needle electrodes for intraoperative neurophysiological monitoring that can overcome the above defects, so as to solve the "artifacts" on MRI images caused by local magnetic susceptibility changes in practice. And other issues

Images