ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,544,547, issued on Feb. 10, was assigned to The Regents of the University of California (Oakland, Calif.).

"Gelatin-based microneedle patch for minimally-invasive extraction of bodily fluids" was invented by Alireza Khademhosseini (Los Angeles) and Wujin Sun (Los Angeles).

According to the abstract* released by the U.S. Patent & Trademark Office: "A gelatin-based (e.g., gelatin methacryloyl (GelMA)) patch is disclosed with an array of microneedles (MNs) for minimally invasive sampling of bodily fluids such as interstitial fluid (ISF). The properties of the patch can be tuned by altering the concentration of the GelMA prepolymer and the crosslinking time. The GelMA-based MN patch demo...