ALEXANDRIA, Va., July 7 -- United States Patent no. 12,672,839, issued on July 7, was assigned to WUXI KAISHUN MEDICAL DEVICE MANUFACTURING Co. LTD. (Wuxi, China).

"Rubber tube for stethoscope and structure for fitting the rubber tube with ear-hung pieces" was invented by Xijie Shan (Wuxi, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rubber tube for a stethoscope and a structure for fitting the rubber tube with ear-hung pieces. The rubber tube (1) for a stethoscope comprises a rubber tube channel (10) penetrating through each end portion, recesses (12) are provided on a channel wall (11) of the rubber tube channel (10); and when the ear-hung pieces are opened towards two sides for use, the sound li...