| 摘要 |
An implantable medical device (IMD) with sensing electrodes that are relatively closely spaced subcutaneous electrodes arranged in a subcutaneous electrode array (SEA). The SEA is implemented to enable a leadless orientation-insensitive SEA scheme for receiving ECG signals. The SEA is distributed over the perimeter of the IMD and includes a non-conductive shroud. The shroud can be wider near the SEA electrodes, providing an enhanced signal to noise ratio, and narrower elsewhere to avoid interfering with pacing or defibrillation signals when the case of the medical device is used as an electrode.
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