Enhancing Wheelchair Comfort and Safety
Case Story: Why coated fabrics matter for Karma wheelchair users
Wheelchair users frequently encounter issues due to prolonged sitting, such as pressure injuries, discomfort from non-breathable fabrics, and hygiene difficulties.
50% of a wheelchair user’s body’s weight is concentrated on just 8% of the body, specifically the bottom of the spine. This puts them at greater risk of developing avoidable pressure injuries due to the increased pressure on a small surface area, potentially leading to discomfort, skin breakdown, and other health issues1.
Research has highlighted the persistent nature of wounds following the onset of a pressure injury. It was found that patients in wheelchairs experience greater pressure concentrated on smaller areas, and subsequent recommendations are to use a polyurethane cushion up to 8cm thick to help redistribute this pressure2.
Dense fabrics such as PVC lack breathability, leading to excessive sweating and discomfort. Moreover, fabrics that
are hard to clean can lead to hygiene concerns and potential health issues.
For over 35 years, Karma Medical has been a leading manufacturer of award-winning wheelchairs, dedicated to quality, ergonomic, and sustainability.
A key component in their commitment to user comfort and safety is their use of polyurethane (PU) coated fabrics,
including Dartex® by Trelleborg, for seat components.
Karma Medical’s use of Dartex® fabrics brings multiple benefits to their wheelchair customers:
• Breathability: Dartex® fabric promotes air circulation, helping to reduce moisture at the skin / cushion interface
helps to maintain a cooler, more comfortable microclimate. Breathable fabrics are crucial for preventing moisture build up and mitigating the risk of avoidable pressure injuries.
• Durability and Cleanability: The PU-coated surface of Dartex® fabric is easy to wipe clean, making it simpler to
maintain hygiene and prevent the accumulation of bacteria and contaminants.
• Stretch for Immersion and Envelopment: Dartex® fabric has significant stretch properties, which provides
immersion and envelopment for the wheelchair user. This results in enhanced comfort by reducing pressure points and distributing pressure more evenly.
The use of Dartex® fabric with Karma Medical’s wheelchair cushions exemplifies the positive impact of selecting the right materials.
By addressing challenges related to breathability, durability, and comfort, PU-coated fabrics significantly enhance the functionality and longevity of wheelchairs, ultimately improving the daily lives of users.