The natural heart A natural heart beats about 70 times per minute, and with every stroke about eight centilitres of blood is pressed into the bloodstream. The right ventricle pumps blood to the lungs, where it is supplied with oxygen, and the left ventricle ensures that the body tissue receives fresh blood.
Category: Medical technology
Obesity has become a pandemic: around 650 million people are seriously overweight. An implant that inhibits appetite may change that. The implant was developed by researchers at the University of Wisconsin-Madison in the US. It measures 1 by 1 centimeter and is 1 millimeter thick.
For 15 years, the blue Viagra pill has stood head and shoulders above all other drugs that are supposed to prevent erection problems in men, also known as erectile dysfunction. At a recent meeting of the European Society for Sexual Medicine (ESSM) in Spain, several research teams discussed their good results in the treatment of impotence with extracorporeal shockwave treatment (ESWT).
Bag is opened and testicles are removed. The ball bag is cut open from the root of the penis. The semiconductors are cut and both testicles are removed. Only two pieces of skin are left of the original bag, which are kept. The skin is loosened and the swelling body is discarded The foreskin is cut loose from the glans and pulled down with the rest of the penis skin, so that the internal parts are exposed.
During a match in the National Football League in 2007, American football player Kevin Everett bumped into an opponent head-on and broke his backbone. He was paralyzed from the shoulders. Immediately after the back injury, doctors inject 4 ° C cold salt water into the blood vessels and place Everett under a cooling blanket.
Artificial lens gives razor-sharp vision A Canadian company has developed a lens that you can see very well with. Much better than with normal vision. The so-called Bionic Lens is applied in the eye instead of your natural lens. So you can focus on something that is only 3 centimeters away from your eye, and see the license plate of a car three times as large as normal.
The controversial Italian doctor Sergio Canavero claimed to have carried out the first transplant of a head from one human body to another during a press conference in Vienna. According to the doctor, these were two corpses, but his experiment showed that such an operation is possible in principle.
Millions of years ago our brains made a big leap, so we now have bigger brains and better cognitive skills than our closest relatives, such as the gorilla and the chimpanzee. Chinese researchers have tried to correct that difference by implanting additional specimens of the MCPH1 gene in macaques.
In March 2016, the American couple Rodney and Annette Boesen receive a message that all parents fear. Their 20-year-old son was involved in a traffic accident: Kris has broken his neck, is on ventilation and is probably permanently paralyzed from his neck to his toes - except for his one arm, which he can still move up and down.
1. Years ** 1930: the electroshock is taken into use ** © Otis Historical Archives National Museum of Health and Medicine // Flickr // Creative Commons The electroshock was invented in 1938 by two Italian doctors. These doctors already knew that some psychologically ill people would feel better if they provoked an epileptic seizure.
An artificial coma is an extreme form of complete anesthesia in which doctors put the brain out of action; the patient does not regain consciousness and cannot respond to influences. In an artificial coma, heart rhythm, blood pressure and breathing must be maintained mechanically or with medication.
During a 36-hour operation, 100 doctors and assistants must place the head of an invalid on a healthy body. Critics say nerves in the spinal cord will sustain permanent injury, paralyzing the patient. But the surgeon behind the idea doesn't want to know anything about criticism. The operation is planned for 2017, and the main donor is already ready.
Magnet of MRI scanner always goes on and off The noise of an MRI scanner can be simply unbearable. But the device is sometimes indispensable when making a correct diagnosis. The noise is caused by the very powerful electromagnet in the scanner. The magnet of an MRI scanner constantly turns on and off.
Researchers from Japan have succeeded in turning blood cells into the primitive pre-stages of egg cells. This breakthrough opens up new possibilities for women who cannot have children naturally. The research team at the University of Kyoto first took blood cells from a woman and converted them into stem cells, which can often divide many times and grow into almost all cell types of the body.
The battery of a pacemaker has a limited lifespan and must be replaced with a minor operation after five or ten years. This is no longer necessary in the future. In a 32-participant trial, Swiss researchers tested whether a pacemaker can be powered by solar cells - and that is possible.
So far, a man could only save a woman with a condom or sterilization from an unwanted pregnancy. But in a few years, men will get an option: they can have gel injected into their sperm leader, which will then be blocked, preventing the sperm cells from passing. Unlike the pill, the gel contains no hormones and has no side effects.
I day anbringer læger for tidligt fødte børn i tørre kuvøser med slanger, nåle og plastrør fastgjort til den lille krop. And tilstand, der er meget langt fra, hvordan fostre svæver i of i livmoderen. Derfor har american forskere fra Philadelphia udviklet and artful livmoder til babyer født mere end ni uger for tidligt.
It is not much bigger than your thumb and can radically change the way we conduct research in the future. A small chip that can imitate human organs has recently been included in a promising research project by the US Food and Drug Authority. Thanks to this approval, we may be able to test new drugs in the near future without animal testing and with much greater accuracy.
Brain surgery is a major operation. The skull is sawn open, a hole is made in the meninges and the surgeon pokes instruments in the sensitive brain tissue. Some tumors can be treated with ultrasound from outside. This is a non-invasive method in which the tumor, as it were, melts away.
Around 336,000 children were born with gray cataracts in 2015. They risk a life with greatly reduced vision or even blindness - but now there is good news. A team of American and Chinese researchers treated the eyes of 12 Chinese children under the age of two with stem cells, which means the children now have normal vision.
200 volts shoots through your brain and your body cramps. Electroshock therapy sounds like a horrible torture, but in fact depressed people with suicidal tendencies have been successfully treated with the controversial method since 1938. However, it has only recently become known why the heavy electric shocks work: the electroshocks ensure that important brain regions start to grow.