A multi-layer negative pressure sealing drainage device for wound protection

Abstract

The invention provides a multi-layer negative pressure sealing drainage wound protection device, comprising a porous foam cushion, a drainage tube with one end located in the porous foam cushion, the porous foam cushion is a multi-layer composite foam cushion, including a negative pressure conduction layer and The drainage protection layer, the negative pressure conduction layer is a hydrophobic porous foam material layer, the drainage protection layer is a hydrophilic porous foam material layer, and the drainage tube is placed in the negative pressure conduction layer; it also includes an oxygen-containing liquid flushing tube, an oxygen-containing liquid The flushing tube and the drainage tube enter the porous foam cushion side by side, the drainage tube passes through the porous foam cushion and is located on the lower surface of the drainage protective layer, and its tail end goes deep into the drainage protective layer for positioning, and small holes are arranged on the tube wall. The introduction end of the drainage tube and the oxygen-containing liquid flushing tube is fixed by a common elastic sealing film floppy disk. The elastic sealing film floppy disk includes a disc and an outwardly extending elastic sealing film bonded to the disc. There is drainage in the middle of the disc. The drainage inlet nozzle of the tube and the irrigation inlet nozzle of the oxygen solution flushing tube. There is a longitudinal slit at the inlet end of the drainage tube of the porous foam cushion, which is convenient for the introduction of the nozzle to turn over.

Description

technical field [0001] The invention relates to the field of medical wound treatment equipment, in particular to a multi-layer negative pressure sealing drainage device for wound protection. Background technique [0002] Vacuum sealing drainage technology (vacuum sealing drainage, referred to as VSD) was pioneered by Dr. Wim Fleischman of ULM University in Germany in 1992, and formed a theoretical prototype for the drainage of extremity wounds; in 1994, Professor Qiu Huade of China applied the vacuum sealing drainage technology for the first time In general surgery, pioneered the application of negative pressure sealing drainage technology in general surgery. The patent CN 2236350 authorized by Professor Wang Yanfeng and Qiu Huade in China on March 17, 1997 was the first patent of negative pressure sealing drainage technology. [0003] The basic configuration of the existing VSD technology includes negative pressure sources (including medical suction machines, central negati...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to design a multi-layer negative pressure sealing drainage wound protection device, which can overcome the defects of existing negative pressure sealing drainage wound protection materials, and can effectively improve its negative pressure conduction while ensuring the safety of the material. Performance, not easy to block during use, stable permeability, and can have the hydrophilic characteristics of hydrophilic dressings (PVA), using the wettability of the material itself to improve the therapeutic effect

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