公开(公告)号：US20240081710A1

公开(公告)日：2024-03-14

申请号：US18514111

申请日：2023-11-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yujian Huang ,  Qiu Jin ,  Ming Cai ,  Longyu Li

IPC: A61B5/263 ,  A61B5/28 ,  C23C14/06 ,  C23C14/34

CPC classification number: A61B5/263 ,  A61B5/28 ,  C23C14/0605 ,  C23C14/34 ,  A61B2562/0285 ,  A61B2562/125

Abstract: An ECG electrode is provided. The ECG electrode includes an electrode substrate and a doped graphite-like carbon film located on an outer surface of the electrode substrate. The doped graphite-like carbon film includes graphite-like carbon, and first nano-crystals and second nano-crystals that are embedded in the graphite-like carbon. The first nano-crystal includes a weak carbon-bonding element. The weak carbon-bonding element has a part that exists in a form of a metallic elementary substance. The first nano-crystal includes a columnar structure. The columnar structure extends in a thickness direction of the doped graphite-like carbon film. The second nano-crystal includes a strong carbon-bonding element. The strong carbon-bonding element bonds with the carbon element in the graphite-like carbon through a chemical bond. The second nano-crystals are distributed between adjacent and spaced columnar structures. The ECG electrode has high hardness and excellent wear resistance while ensuring excellent electrocardiography signal quality.