In the classic sci-fi film "Magic Journey", a submarine led by a team led by Racquel-Weizhi narrowed and entered the blood vessel of an injured diplomat, trying to save his life. Researchers at Tel Aviv University in Israel have developed a mini capsule camera that can "swim" inside the human body
The copper "tail" of the capsule camera is controlled by the magnetic field generated by the nuclear magnetic resonance scanner, allowing scientists to control the movement of the camera outside the body
The capsule camera developed by Tel Aviv University is still large and cannot enter the blood vessels, but the copper "tail" that can be controlled by the magnetic field "swim" in the patient's digestive system
Beijing time, December 22, in the science fiction film "Magic Journey", a group of doctors took a narrow submarine into a dying patient to save his life. Now, researchers from Tel Aviv University in Israel are taking another step forward to build this mini submarine. They developed a miniature capsule camera that can "swim" inside the human body. It is reported that this is the world's first wireless remote control camera for "swimming" in the human body, and is magnetically controlled by external magnetic resonance imaging signals.
In the 1966 classic movie "Magic Journey", scientists reduced a submarine and its crew to allow them to enter a patient and save his life. Of course, this kind of submarine is just a scientific fantasy, and it has not yet become a reality. The mini camera developed by Tel Aviv University can look for wounds and tumors, while not discomforting patients like endoscopes.
Gabor Kosal of Tel Aviv University said in an interview with "Biomedical Micro Devices" magazine that the mini camera can also deliver drugs into patients. He said: "The MRI system can generate a huge constant magnetic field. The capsule camera moves in the body according to this magnetic field, just like a sailing boat on the wind and waves."
The movement of the capsule camera is more like swimming. It has a "tail" and consists of a copper coil and a soft and flexible polymer. The magnetic field causes the tail to vibrate, allowing the camera to "swim" in the body. The electronic components and micro sensors in the capsule allow the operator to manipulate the magnetic field and control the movement of the camera. Kosal pointed out that the use of non-ferrous magnetic material copper is a key. Most magnets will interfere with the MRI imager, making the final image blurred, and the interference caused by copper is very small, which can obtain a clear image.
An endoscope is a device that visually inspects the internal passages of the body or the hollow organs such as the colon, bladder, and stomach. It causes discomfort to the patient. The patient needs time to recover after the examination, and needs to take a sedative. The mini camera developed by Tel Aviv University is mainly used to check the digestive system which is easier to enter and exit.
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