A multi-layer negative pressure sealing drainage device for wound protection
A technology of negative pressure and drainage tubes, applied in wound drainage devices, medical science, dressings, etc., to achieve the effects of stable permeability, improved efficacy, and convenient drainage
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[0023] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation to the present invention, and are only examples. At the same time, the advantages of the present invention will become clearer and easier to understand through the description.
[0024] Such as figure 1 , figure 2 : multi-layer negative pressure sealing drainage wound protection device of the present invention comprises porous foam cushion 1, and one end is positioned at the drainage tube 3 in porous foam cushion 1, and described porous foam cushion 1 is multi-layer composite foam cushion, at least comprises Negative pressure conduction layer 1a and drainage protection layer 1b, negative pressure conduction layer 1a is a hydrophobic porous foam material layer, drainage protection layer 1b is a hydrophilic porous foam material layer, and drainage tube 3 is placed in the negative pressure conduction layer 1a...
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