Wound Magnet

Injection of magnetic fluid will stop blood loss

Sergey Kolenov, Hi-tech+

The new approach "seals" the wound and gives time to get the victim to the hospital. The technology will save many lives, because for patients with serious wounds, the main danger is blood loss before delivery to the hospital. An unusual way to stop it was proposed by researchers from The Massachusetts Institute of Technology, whose work is described by the press release of the American Physical Society Injection of magnetizable fluid could extend trauma patients' survival time.

The team has developed a special liquid that contains tiny magnetic particles. According to the researchers' idea, in order to stop bleeding, it is necessary to install two small but strong magnets on the skin at the site of the injury, and then inject this liquid into the patient's blood immediately before the wound. Pretty quickly, the liquid will be in a magnetic field, where it will instantly harden, clogging the wound. This will either greatly slow down or completely stop the blood loss.

A mixture of glycerin and water flowing through a flexible tube simulates blood flow through a vessel. Injury occurs (red arrow) when the vessel is pierced with a needle. The magnetorheological suspension flows together with the blood to the injury site, where a pair of magnets (orange lines) are installed in transparent holders (blue lines), preventing them from compressing the tissues. In a magnetic field, the suspension solidifies, significantly reducing the rate of blood loss – VM.

The authors consider this measure as a temporary solution that will allow them to win at least half an hour and deliver the victim to the hospital. Here the magnets will be removed and intensive treatment will begin. A new approach could save thousands of lives.

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