Negative-pressure drainage wound-protecting dressing and negative-pressure drainage wound-protecting device

Abstract

The invention provides a negative-pressure drainage wound-protecting dressing and a negative-pressure drainage wound-protecting device. A polyurethane polymer can be tightly attached to a wound cavity in a free foaming process; therefore, sponge is well attached to the edge of the wound cavity; no cavity or dead cavity appears; good attachment is guaranteed; granulation tissue hyperplasia can be better stimulated under the action of negative pressure; meanwhile, growth factors and antibacterial factors are added in the polymer design, so that wound recovery is promoted together, and the recovery effect is better; and, in the free foaming process of the polymer, the antibacterial factors are freely dispersed into the foam sponge, so that the anti-infection ability of the product is improved, and the risk of wound infection deterioration is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of medical dressings, and relates to a wound-protecting dressing, in particular to a negative-pressure drainage wound-protecting dressing that reduces the difficulty of using the negative-pressure drainage wound-protecting dressing, improves the infection control ability, and accelerates the healing speed of the patient's wound, and a negative-pressure drainage wound-protecting dressing and a negative pressure drainage dressing. Pressure drainage wound protection device. Background technique [0002] Wound sealing negative pressure drainage technology (Vacuum sealing, Draina VSD) was pioneered by Dr. Fleischmann, a German trauma surgery expert in 1992, and is widely used in the field of trauma surgery. Its mechanism of action is as follows; [0003] 1) Sealing maintains the high negative pressure as the drainage power, and at the same time isolates the drained area from the outside world, effectively prevent...

AI Technical Summary

Problems solved by technology

[0024] 1) The sponge material needs to be cut according to the wound of the patient, which has high requirements for the operator;

[0025] 2) Since the sponge is cut and put into the patient's wound, it cannot completely fit the inside of the patient's wound, resulting in a cavity effect, affecting the effect of negative pressure, delaying the progress of wound recovery in mild cases, and causing wound deterioration in severe cases;

[0026] 3) There is no ability to effectively control the risk of infection. Once the wound is infected, the recovery time will be greatly prolonged

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