The Beth Project limb, developed by US-based Jason Hill, and the O2 Pursuit Bike, designed by Australian Dean Bedstead, are in the running for the award, with the winner to be announced on 8 November.
Also in the running is Royal College of Art graduate Dan Watson’s SafetyNet sustainable fishing design, which won the UK leg of the Dyson Awards.
The Dyson Award is open to product and industrial design and engineering students or recent graduates, who are tasked to ‘design something that solves a problem’
The International Dyson Award winner will receive £10 000, with another £10 000 going to their university department.
Also shortlisted for the international award are:
• The Smart Aid unmanned aerial vehicle, which delivers first aid to people in dangerous locations, designed by Stefan Riegebauer from Austria;
• The Fil’o device that allows parents with hearing problems to monitor their child’s needs through vibrations and light, designed by Jaren Liow Wei Ting from Singapore;
• The Alto sewing machine, designed to be sleek and attractive and aimed at beginners, designed by Sarah Dickens from the UK;
• The Revival Vest, designed to prevent free-fall divers from drowing in the water, designed by James McNab from New Zealand;
• The Emergency Airdrop, a system to deliver aid from planes based on a sycamore seed, designed by Adrienne Finzsch of Germany;
• The Reach and Match toy, developed to help blind and visually impaired children to learn braille, designed by Mandy Shuk-Man Lau, from Australia;
• The Gira Dora human-powered washer and spin dryer, designed by Alex Cabunoc from the USA;
• The Balde a Balde portable tap, which aims to combat the unhygienic and messy transfer of water from bucket to bucket for people without access to clean water, designed by Kim HY Chow of the USA;
• The Stephoe hoe design with a footstep, designed by Mohammed Daud from the UK;
• The Hop! Suitcase, which follows its owner by detecting signals from their mobile phone, designed by Rodrigo García González from Spain;
• The Louis concrete floor surface, which reacts to water to reveal decorative patterns, designed by Mathilde Gullaud from France; and
• The ReWired cable-and-pully system, that allows users to adjust the location of ceiling lights, designed by Paco Busser from The Netherlands.