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Latest AWRC Wellbeing Accelerator News
Apr 28, 2021
Rehab innovation for elderly approaching large scale manufacture 28 April 2021 × Jen Turner, who founded JT Rehab in 2016, said: “The changes specified by the AMRC team were exactly what I had hoped for and will make a big difference. The weight has reduced by 11% and the cost of manufacturing for three components was cut by a combined 73%.” Turner, a physiotherapist working in older peoples’ rehabilitation, established JT Rehab after becoming frustrated at a lack of equipment available to strengthen patients’ leg muscles while staying on hospital wards. She said: “Most hospital patients spend about 80% of their time in bed where muscle strength can decondition by about 20% in the first week. It is a massive problem, particularly for elderly people who have a low level of physical ability anyway.” “I wanted something elderly patients could start using early in their rehabilitation that was affordable and simple to use, but effective in strengthening muscle through resistance. It also had to comply with all the stringent NHS safety standards and no devices like that exist, so I decided to do something about it and that’s where I came up with the idea of the S-Press, which strengthens the muscles of patients with leg problems by providing a means of exercise in bed.” Funding was secured from the Design Council, Sheffield City Council and Versus Arthritis to create a prototype for a machine which uses a spring and pulley system to allow a patient to slide their foot up and down with varying resistance, from 3kg to 20kg. Electromyography (EMG) testing proved the progressive resistance works every muscle in the leg. JT Rehab is a member of Sheffield Hallam University Advanced Wellbeing Research Centre’s (AWRC) Accelerator scheme, one of 20 University Enterprise Zones launched with a £20 million investment to increase the likelihood of, and reduce the timescales for, innovations to be brought to market through intensive testing and development. AMRC engineers provide mentoring to businesses on the AWRC Wellbeing Accelerator and it was through the programme that Jen was introduced to design experts in the AMRC’s Design and Prototyping Group (DPG). They were asked to conduct a design review of the manufacturing routes of the high-value components, provide alternatives to the manufacturing processes used and to suggest potential improvements. Turner said: “My prototype was nine kilograms, which is fine to carry for short distances, but too heavy to carry any further. I asked the AMRC to lessen some of the weight and explore different ways of manufacturing the parts to bring the cost down.” Peter Oates, senior design and development engineer, analysed the S-Press piece-by-piece and reviewed how each component’s design could be optimised. “Some elements weren’t worth changing as Jen was already committed to a certain manufacturing route. But a lot of things could be changed relatively simply and cheaply,” said Oates. “Some of the sliding blocks were really finely machined and were costing a lot of money, so we suggested 3D printing them. For a couple of the designs, we did quick prints for Jen to try out to see whether it would work. For other parts, I calculated the costs and prices for either 3D printing them or making an injection moulding tool, depending on the quantity, and presented it to Jen.” The AMRC is part of the High Value Manufacturing (HVM) Catapult and the five-day assist project was paid for using funds from the HVM Catapult as part of a commitment to working with small and medium-sized manufacturers. Turner has applied the AMRC’s suggestions on three components for the S-Press: the main slider, the internal slide, and the handle. She said: “The main slider was originally machined acetyl, which was costing £47.34 a unit, but using the AMRC recommendation we’re now 3D printing two runners and combining them with an off-the-shelf element which has a total price of £19.20 a unit. “The internal slider was again machined acetyl at £29.58 a unit, but Peter proposed laser cutting plastic. The component slides up and down, so it needs to be smooth; the plastic is not quite as smooth as the metal original, but it is £2.87 per unit to produce and lighter - so it is definitely smooth enough. “Lastly, the original steel handle was 245g – 3% of the total weight – and £12.43 a unit. Peter presented us with four alternatives, and we are now using an option similar to those on suitcases that weighs 70g and costs £3.38. With that component, we hadn’t really thought much about it, but changing it makes a significant difference.” Those manufacturing changes will be implemented when the S-Press goes to large-scale manufacture once it progresses through nine months of trials. Turner added: “One of the mentors on the AWRC Wellbeing Accelerator programme is the innovation lead at Northamptonshire Healthcare NHS Foundation Trust and he is very excited about using the S-Press in four community hospitals in a feasibility and efficacy study. “Sheffield Teaching Hospitals critical care team also want to trial it; that will be good to see what a difference it can make for people who can’t get up at all. “They say it takes seven years to get innovation into the NHS and it’s been a long, long road. But I’m convinced it will be worth it.”
AWRC Wellbeing Accelerator Investments
AWRC Wellbeing Accelerator has made 1 investments. Their latest investment was in Selfit Medical as part of their Incubator/Accelerator on May 5, 2020.
AWRC Wellbeing Accelerator Investments Activity
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