GENEVA, Nov. 3 -- HUNAN VATHIN MEDICAL INSTRUMENT CO. LTD (1 / F, Building 12, Innovation And Entrepreneurship Service Center, No. 9, Chuanqi West Road, Jiuhua Economic Development ZoneXiangtan, Hunan 411100), 湖南省华芯医疗器械有限公司 (中国湖南省湘潭市九华经开区传奇西路9号创新创业服务中心12栋1楼) filed a patent application (PCT/CN2025/090817) for "NEGATIVE PRESSURE REGULATION AND CONTROL STRUCTURE AND URETERAL ACCESS SHEATH" on Apr 24, 2025. With publication no. WO/2025/223493, the details related...