As part of the global response towards Covid-19 Simple Design Works Ltd responded to the call for help to produce much needed supplies. They have already 3D printed surgical mask clips and face shields for Worcestershire front line workers and now have turned their expertise to provide a nifty solution to make ventilators more efficient. These clever little valves fit on the ventilator hose to reduce oxygen wastage and are on their way to Wye Valley NHS Trust.