Volume-variable negative pressure drainage device

• Main Authors: LI QING, NING JING, TAN SHANYU, CHEN XIUBING
• Format: Patent
• Language: Chinese; English
• Published: 09.12.2022
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

The invention provides a volume-variable negative pressure drainage device, and relates to the technical field of medical instruments. The volume-variable negative pressure drainage device comprises a flexible barrel, a cylindrical bag and a containing assembly, the outer wall of the flexible barrel is wound by a metal spiral line, the top and the bottom of the flexible barrel are provided with a hard barrel cover and a hard barrel bottom respectively, and the hard barrel bottom is connected with the top end of the cylindrical bag. A through hole communicated with the cylindrical bag body is formed in the center of the hard barrel bottom, a plug is arranged in the through hole, the hard barrel cover is provided with a pull rope connected with the plug, the length of the pull rope is equal to two thirds of the maximum height of the flexible barrel body, the containing assembly comprises a circular surrounding plate and semicircular elastic covering cloth, and the top end of the circular surrounding plate is fi