ALEXANDRIA, Va., July 15 -- United States Patent no. 12,661,172, issued on June 23.

"Instrument for therapeutically cytotoxically ablating parathyroidal tissue within a parathyroid gland" was invented by Alan N. Schwartz (Edmonds, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "One embodiment provides a tightly targeted minimally invasive therapy (TTMIT) parathyroid tissue ablating instrument. A substance that cytotoxically ablates parathyroidal tissue during application in the parathyroidal tissue of therapeutically sufficient units of an electromagnetic energy having a frequency only ranging from ultraviolet to visible to near infrared. A substance delivery device is configured to introduce the substa...