A wound bandage comprises a two-part bandage frame having an upper frame member and a separable lower frame member, with the upper frame member having a wound dressing attached thereto and being removably securable to the lower frame member to enable periodic changing of the dressing or inspection or...http://www.google.com.au/patents/US4263906?utm_source=gb-gplus-sharePatent US4263906 - Two part wound bandage
