The use of leeches that suck blood to treat diseases seems like medieval remnants, but Polish companies say there is increasing demand by doctors for these leeches.
Leeches are no longer used to remove blood from the human body, a common practice in the past, but now leeches are considered a useful medical device.
Surgeons often use it to reduce swelling and prevention of blood clots in some types of reconstructive surgery, such as restoring a broken finger