Atrial fibrillation is a type of heart disease. The symptoms are irregular and often fast heartbeats. Many suffer from serious complications and require medication or even surgery. During surgical treatment, doctors need to find out where the heart rhythm is wrong. One way is to use cardiac catheter equipment to detect and map the electrical activity of the heart, so as to find the area of ​​the patient’s heart that has a rhythm disorder and perform defibrillation treatment. .
However, at present, the device with electrodes in contact with the surface of the heart in this device is a standardized product. Researchers from Stanford University's bioengineering department are developing a 3D printed customized electrode device to further improve atrial fibrillation. Area detection accuracy.
Accurately track the electrical activity of the heart
The specific method is to customize the design of the device with electrodes based on the heart image obtained by the MRI or CT scan, and then manufacture it through 3D printing. In this way, a device that matches the patient's anatomy can be obtained.
This is a small and thin flexible silicone resin film with small holes in a net-like structure, and each hole has a tiny electrode. When the device is placed on the surface of the heart's atria, it can measure the electrical activity of a specific area of ​​the heart. The data obtained in this way is transmitted to the computer, the computer will record the data and display a heat map of electrical activity. In this way, the doctor can identify the area of ​​the heart that needs to be treated.
Doctors use customized electrode devices in the operating room
The 3D printed customized device can track the electrical activity of the heart-related area very accurately. The researchers said that the customized electrode device has a detailed rectangular information grid, so users don't have to worry about errors caused by signal loss or poor contact.
Heat map of electrical activity on the surface of the heart
These 3D printed customized devices are currently used in the epicardial or outer layer of the heart. Researchers are studying whether the 3D printing device can be used to map the electrical activity of the inner surface of the heart. If so, the heart rhythm interference will be able to be measured more accurately. The basic goal of this research is to identify the problematic points of irregular electrical activity in the heart so as to eliminate them and restore the heart to normal.
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