A recent material is said to make sitting or laying for long periods more comfortable so patients are less likely to develop bed sores. LiquiCell, from LiquiCell Technologies Inc., Eden Prairie, Minn., (liquicell.com), uses a combination of low-viscosity fluid and seal points that control the flow of liquid to help prevent pressure sores. The company says equalizing perpendicular pressure at the point of contact (thus reducing pressure), reduces soft tissue compression, thereby reducing skin friction and soft-tissue-shear stress. And according to the company, an independent study showed that a product using LiquiCell increases blood perfusion up to 150% at the point of contact.