Spiral electrode

Abstract

The spiral electrode comprises a spiral body and an electrode wire, one end of the electrode wire is connected with a wire, the other end of the electrode wire extends along the spiral body, the electrode wire comprises an embedded part embedded into the spiral body and a contact part extending out of the inner surface of the spiral body, and the contact part is of an elastic structure. The electrode wire has the advantages that the spiral body is wound on a nerve or blood vessel to-be-measured object to be measured, the object to be measured compresses the contact portion of the electrode wire, the top of the contact portion is tightly attached to the object to be measured, and due to the fact that the elastic coefficient of the electrode wire is low and the pressure borne by the object to be measured is small, the object to be measured can be accurately measured. The structure can continuously and stably record the electric signal of the to-be-detected object without damaging the to-be-detected object.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a spiral electrode. Background technique [0002] At present, most of the nerve direct action potential recording electrodes used in nerve detection such as vestibulocochlear nerve compound action potential detection are brush electrodes, needle electrodes or C-shaped electrodes. Among them, the brush electrode is fixed on the nerve with a bundle of oxidized cellulose wrapped around the front end of the electrode wire, while the needle electrode has no self-maintaining ability and needs to be filled with gelatin sponge to be fixed. False positive result; although the C-shaped electrode can be clamped on the nerve, making the inner electrode pad close to the nerve, but placing or removing the electrode requires a special pulling device to open the C-shaped clamp arm, and the operation is more complicated. In areas such as vestibulocochlear nerve compound action potential ...

AI Technical Summary

Problems solved by technology

Among them, the brush-shaped electrode is fixed on the nerve with a cluster of oxidized cellulose wrapped around the front end of the electrode wire, while the needle-shaped electrode does not have self-sustaining ability and needs to be filled with gelatin sponge to fix it. False positive results; although the C-shaped electrode can be clamped on the nerve, so that the inner electrode piece is close to the nerve, but the placement or removal of the electrode requires a special pulling device to open the C-shaped forceps arm, and the operation is more complicated. In addition, In applications such as vestibulocochlear nerve compound action potential detection requires continuous monitoring, electrode placement time may be up to several hours, and prolonged clamping of C-shaped electrodes may cause nerve damage

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