Women's Royal Voluntary Service. n a British auxiliary service organized in 1938 as the Women's Voluntary Service for work in air raids and civil defence: active throughout World War II and since 1945 in providing support services for those in need: became the Women's Royal Voluntary Service in 1966, (Abbrev.) WRVS.
Clean the wound. Using a syringe or other field expedient device, irrigate the wound with clean water in order to remove debris. Antiseptic can also be applied to lessen the likelihood of infection. Apply a pressure bandage directly over the wound (with guaze, and preferably a hemostatic agent, packed into the wound).
NPWT device which draws excess fluid from the wound and collects this in. the attached canister. It may also improve blood flow to the wound which. will help it to heal. The NPWT device is electrical and can be plugged in at the mains. There is also a back-up battery for portable use.