Micro-robots can directly treat cancer cells in the body
Recently, the anti-cancer army has ushered in a new force. The Science and Robotics magazine published a new research result. Researchers use magnetic fields to remotely control magnetic micro-robots to perform "work" in the human body. .
Separate task divisions are different
In the past 10 years, magnetic technology has not only been widely used in the industrial field, but also won a place in the medical field - using magnetic force to remotely control medical devices in the human body. For example, a magnetically assisted remote control catheter system can be used for simple intravascular operation; or a magnetic capsule can be used to guide a capsule camera in the examiner, by implanting a permanent magnet in the "capsule", a magnetic field is set outside the patient, and a gravitational force generated by the magnetic field is generated. Guide the capsule camera to the area you want to check. In addition, there have been studies on the use of magnetic fields to simultaneously control small groups of small magnets. It stands to reason that if you can "command" such a team of micro-robots, you can play a huge role in helping to treat major diseases such as cancer.
However, leading such a special team is not simple, requires a strong strategizing ability, and knows how to "transfer troops." However, relying on the magnetic command team is really a huge challenge. We all know that the magnetic field can affect all objects in the range. If these objects have the same nature, then it can only be a slap in the face. "Hula La" is going in one direction, and it is difficult to give orders separately.
In order to solve the problem of individually commanding “team membersâ€, these micro-robots can be moved in different directions at different speeds. Researchers from the Philips Research Institute in Hamburg, Germany have developed a new method that can be used in an identical spiral robot team. Control any member in the middle to enable it to perform special tasks individually. "Our technology allows micro-robots to perform complex operations inside the human body," said physicist Jurgen Ram, the first author of the study.
Controlling by the magnetic field is similar to catching a doll
First, Ram's team created many identical spiral robots, and then fixed the spiral robots with a powerful, uniform magnetic field. There is a hole in this powerful magnetic field, and micro-robots are relatively "free." By using this free point, superimposing a relatively weak, gentle rotating magnetic field on a large magnetic field can control the rotation of the spiral robot in the free point without affecting other "teammates". In addition, the researchers can adjust the position of the free point by adjusting the large magnetic field, so that there is a function like "catch the doll machine", and you can freely select a single robot.
In the experiment, the researchers succeeded in having several spiral robots rotate precisely in different directions at the same time. The research team pointed out that in theory they can manipulate hundreds of micro-robots simultaneously. "Some people think of using the principle of screw drive, so that the micro-robot does not rely on batteries or motors to perform some operations in the human body," Ram said.
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