Scientists are trying to create a micro-robot that can enter the human body and replace the doctor for surgery. The technology is expected to be realized in the next three to five years.
In the 1966 film Fantastic Voyage, medical staff boarded a submarine that could be reduced to a microscopic size and entered a blood vessel of an injured diplomat to save his life. Although the process was difficult, they succeeded. Doctors want to produce a micro-robot that, like a submarine in a movie, can enter the human body and complete the task of transporting drugs, taking samples, and moving things around.
Scientists are currently working on a 1-inch (about 2.5 cm) device that will be powered and manipulated from outside the body by magnetic force. In contrast, now, when a person's artery is blocked by plaque, it can cause a heart attack. The doctor inserts the catheter into the vein of the arm or leg, pushes the device to the destination of the coronary artery, and uses the X-ray machine. Watch where it goes. For so-called angioplasty, a cardiac surgeon can forcibly remove an obstacle. Although the patient usually does not feel pain during this process, it is invasive and carries certain risks. If you can insert a micro-robot into the blood vessel and let it swim to the right place, it will be more convenient to deliver the drug or clear the obstruction. This is the technology being developed by scientists at the University of California, Berkeley, and the University of California. They envisaged that the patient was lying in an MRI machine and the doctor would instruct the micro device to enter the patient and observe the direction of the micro device on the video screen. The NMR machine will drive the device without the need for internal power.
GunheeJang, a professor of engineering at Hanyang University in South Korea, said that he had tried a way to push the robot forward, backward, accelerate, and turn. The research team was able to solve all of this problem by creating all the actions within a system. Researchers in Tel Aviv, Israel, and Boston, USA, are studying the endoscopes of the micro-robot.
Now, when doctors want to see the patient's gastrointestinal system, they have to insert a tube into the patient's throat and push the end of the tube into the stomach, although the patient does not feel very painful, but very uncomfortable, and low efficiency. Gabor Kosa, a professor of engineering at Tel Aviv University, and Peter Jakab and Noby Hata, doctors and engineers at Brigham and Women's Hospital in Boston Potential alternative technology.
As a sci-fi fan, Cossa was inspired by the film "Magic Journey", but he admits that the "shrinking molecules" in the film is impossible, so his device uses more traditional physics. Kossa's instruments are powered by MRI machines. Magnetic resonance imaging produces a magnetic field that causes the torpedo-shaped instrument to swing its tail and "swim" in the human body. The patient swallows the endoscope, and the physician guides it into the stomach, or all the way to the small intestine. It will take an image, cut a biopsy sample, or deliver a drug.
Cossa has now begun testing the propulsion and navigation capabilities of the device model in a water-filled aquarium, which he believes will work equally well in the human body. Their goal is to develop a capsule about one-third inch (about 8.3 mm) wide and three-quarters of an inch (about 19 mm) long to explore the human stomach. He said: "We don't have a prototype yet. We have developed a robotic propulsion mechanism. This is a big step forward." Kosa believes that this device will be available to humans within three to five years.
JunUeda, a professor of mechanical engineering at the Georgia Institute of Technology in Atlanta, USA, is also working on similar equipment. He said that some prototypes of robots have been tested on humans, but have not replaced current medical technology. Part of the delay is due to the time it takes for the government to approve testing techniques for humans. He said: "In addition to the federal government's approval issues, the approval process for medical robotic devices takes more time than traditional robots."
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