We selected popular types of toys selling through four popular online marketplaces. How robust the toys are with standard impact and tension tests.Cords or lengths of fabric that could pose a strangulation risk.Small parts that could cause a choking risk.Sharp edges and points that a child cut hurt themselves on.How we tested the toysĪll of the toys featured were tested to clauses from the toy safety standards BS EN 71-1 Safety of toys and BS EN 62115 Electric toys. If they are still conscious, but not coughing or not coughing effectively, use back blows to help dislodge the object.įind out more - Check the NHS site for more on what to do if your child is choking and feel better prepared for dealing with emergencies in the home by reading our baby first aid guide. If coughing isn't working (it might be silent or they might not be breathing properly) call for help. If your child is choking, try to remove the object if you can see it and if they are coughing, get them to continue as this could help to bring up the object. Make sure you explain that magnets could be involved - the hospital will need to know to ensure that an MRI scan is avoided as this type of scan involves the use of strong magnetic fields.' What to do if a child is choking 'If magnets are found then a referral will be made for emergency surgery. If you suspect your child has swallowed magnets or a magnet and other metallic objects, go to A&E and have an x-ray. What to do if a child has swallowed a button battery or a magnetĮmma told us: 'If you think your child has swallowed a button battery, take them to A&E to have an x-ray before having the battery removed.
We spoke to Emma Hammett from First Aid for Life about the dangers posed to children by button batteries and magnets in toys. What should you do if your child has swallowed something or is choking? If a child swallows two or more magnets, or a magnet and another metallic object, they can stick together in the gut, creating blockages, twisting, compression of the gut and perforation which would need surgery. Nelson, 30 October 2019, Science Robotics.As well as being a potential choking hazard, magnets are a problem if a child swallows them due to the way they attract other metallic objects. Reference: “Magnetic quadrupole assemblies with arbitrary shapes and magnetizations” by Hongri Gu, Quentin Boehler, Daniel Ahmed and Bradley J. The thread could be inserted into the body in a relatively simple, minimally invasive procedure through a tiny opening and then a magnetic field applied to assemble it into the final multidimensional structure inside the body. This is something that could be of use in the medicine in the future: it is conceivable that objects such as stents could be formed from a thread consisting of such modules. The scientists are also studying how the modules could be used to combine a linear structure into a multidimensional object with the help of a magnetic field. It is size-independent, he says, meaning that there is no reason why much smaller quadrupole modules couldn’t be developed. Gu says that their work was initially about developing the new principle. Shown here is a combination of magnetic modules and flexible connectors. Add in some flexible connectors and it’s even possible to build robots that can be controlled by a magnetic field.”Īn external magnetic field (center and right images) can be used to control the orientation of the modules. “With a variable magnetic field, we can then move the shapes we have built out of the modules. “This causes the modules to align themselves with an external magnetic field, like a compass needle does,” Gu explains. They achieved this by arranging the little magnets in the module at a slight angle to each other rather than parallel (see picture). It is a little more complicated than that, though, because in addition to the strong quadrupole, the scientists also built a weak dipole into the building blocks. The quadrupole dominates the magnetic properties of the modules. Quadrupole and dipole in the same building block “We’re particularly interested in applications in the field of soft robotics,” says Hongri Gu, a doctoral student in Professor Bradley Nelson’s group at ETH and lead author of the paper that the scientists recently published in Science Robotics. However, possible use cases go way beyond such gimmicks. They assembled them into pixel art emojis to demonstrate what the modules can do.
Quadrupole modules have an edge length of just over two millimeters Credit: ETH Zurich / Hongri Guīuilding on this principle, the scientists made colored modules with an edge length of just over two millimeters.
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