ALEXANDRIA, Va., June 17 -- United States Patent no. 12,310,822, issued on May 27.

"Multi-layered dressing" was invented by Leslie Giesemann (Solana Beach, Calif.) and Irene Rodriguez (Hermosa Beach, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A dressing for use with percutaneous tubes/drains/pins and tracheostomies that is designed to be impermeable to aid in the prevention of leakage of body secretions or fluids and to help prevent microbes from entering the body around the percutaneous device from the outside of the dressing. The dressing includes three layers or more including a layer having antimicrobial, bacteriocidal, or hemostatic agents, a cushioned absorbent layer covered by an outer see ...