Japanese researchers develop human implantable amplification circuits for monitoring weak ECG signals

Release date: 2016-05-11

A research team led by Prof. Takashi Yoshio of the University of Tokyo in Japan and Professor Guan Guyi of Osaka University has successfully developed a gel organic growth amplifier with good biocompatibility. The circuit uses a novel conductive gel material that has minimal reaction to human body rejection and inflammation as an electrode, and an organic transistor amplification circuit is fabricated and integrated using an extremely thin polymer film, and the resulting sensor can be implanted in the body for a long period of time. Studies have confirmed that using this technique, ECG signals that are very weak in the heart of the heart can be measured stably.

The main feature of this sensor is the use of a soft and highly conductive gel electrode that adapts to the human body. It can be embedded in the body for a long time, so that the weak ECG signal can be organically amplified. It can also be used as a next-generation medical device during surgery. The device. Due to the use of a thin-plate type biopotential measurement sensor that can work long-term in the body, even if it is directly attached to a human organ, it rarely causes an inflammatory reaction, and the diseased organ is inspected under the minimum load. Researchers believe that the research results are important for the early detection and treatment of diseases and the application of next-generation medical devices in various fields.

With the rapid development of science and technology, sensors have been applied to various information measurement in daily life. In particular, in recent years, physiological information measurement activities represented by wearable sensors have rapidly increased, and have entered the health care, medical care, and nursing industries. In the medical field, implantable sensors are gaining more and more attention. Implanting the sensor into the body not only helps the body work properly, but also detects and prevents disease in advance. At present, in-vivo implantable electronic devices such as cardiac pacemakers and artificial inner ear have been widely used, but since the human immune system is repelled from foreign objects, it is very difficult to continuously and stably work on electronic devices that have been implanted for a long time. Today, implantable electronic devices are mostly made of high-hardness silicon, and researchers are developing the next generation of organic materials that have higher affinity and softer body.

Source: Technology Daily

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