Multilayer negative-pressure closed drainage wound protecting device

Abstract

The invention provides a multilayer negative-pressure closed drainage wound protecting device which comprises a porous foam cushion, a drainage tube and an oxygen-containing liquid flushing tube. One end of the drainage tube is positioned in the porous foam cushion, the porous foam cushion is a multilayer composite foam cushion and comprises a negative pressure conducting layer and a drainage protecting layer, the negative pressure conducting layer is a hydrophobic porous foam material layer, the drainage protecting layer is a hydrophilic porous foam material layer, and the drainage tube is disposed in the negative pressure conducting layer; the oxygen-containing flushing tube and the drainage tube enter the porous foam cushion side by side, the drainage tube penetrates the porous foam material layer to be positioned on the lower surface of the drainage protecting layer, the tail end of the drainage tube goes deeply into the drainage protecting layer for positioning, and small holes are distributed in the wall of the drainage tube. The drainage tube and a leading-in end of the oxygen-containing liquid flushing tube are fixed by a shared elastic sealing glue film floppy which comprises a disc and an elastic sealing glue film bonded with the disc and extending outwards, and a drainage leading-in tube orifice of the drainage tube and a flushing leading-in tube orifice of the oxygen-containing liquid flushing tube are arranged in the middle of the disc. A longitudinal breaking joint is formed at a drainage tube incoming end of the porous foam cushion, so that convenience is brought to overturning of the leading-in tube orifice.

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. Professor Wang Yanfeng and Professor Qiu Huade obtained the patent CN2236350 authorized in China on March 17, 1997, which is 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 mac...

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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