ALEXANDRIA, Va., May 12 -- United States Patent no. 12,623,051, issued on May 12.
"Drainage device" was invented by Chung-Yung Ho (Taipei City, Taiwan), Chung-Chen Ho (Taipei City, Taiwan) and Hong-Fa Ho (Taipei City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A drainage device having a catheter and a control valve, the control valve having a valve body and a resilient switch controlling the valve body, the valve body being connected to the catheter, the resilient switch being provided in the catheter, and characterized in that: the user can deform the resilient switch to adjust the opening of the valve body by pressing the catheter or pressing a body part having a cavity accommodating the cathete...