Wound medicine change drainage device

Abstract

The invention discloses a wound medicine change drainage device. The device sequentially comprises a medicine layer, an isolation layer, a liquid absorption layer and a sealing and fixing layer from awound to outside, wherein the medicine layer, the isolation layer and the liquid absorption layer are sealed and fixed on the skin surface around the wound by the sealing and fixing layer; the medicine layer is made of a liquid absorption expansion material, and a medicine delivery tube is arranged on one side, close to the wound, of the medicine layer; the medicine delivery tube penetrates out of the sealing and fixing layer; the isolation layer is provided with a plurality of one-way valve hole channels; the liquid absorption layer is made of the liquid absorption expansion material and comprises a sealing layer, and the sealing layer seals all the parts, except the part attached to the isolation layer, of the liquid absorption layer; and a negative pressure drainage tube is arranged inthe liquid absorption layer. The device integrates the medicine change function and the drainage function, and the defect that medicine change cannot be conducted on the negative pressure drainage wound surface is overcome. The medicine layer and the liquid absorption layer can be repeatedly cleaned and used, and negative pressure does not need to be continuously connected for a long time, so that burdens of medical staffs and patients are reduced.

Description

technical field [0001] The invention belongs to the field of medical technology, and in particular relates to a wound dressing and drainage device. Background technique [0002] Vacuum sealing drainage (VSD) is a new technology developed in recent years for wound treatment. It uses polyvinyl alcohol hydration foam to fill the wounds formed by skin or soft tissue defects, infection, and necrosis, and drains them in all directions, and covers and seals the entire wounds and cavities with biological semipermeable membranes. The porous drainage tube connects the foam material with the negative pressure. The device is connected so that the wound is in a negative pressure sealing state, which promotes the removal of wound exudate and liquefied necrotic tissue from the body, forming an efficient drainage. The therapy can accelerate the blood circulation in the wound site, promote new blood vessels to enter the wound, stimulate the growth of granulation tissue, and accelerate wound...

AI Technical Summary

Problems solved by technology

[0003] However, the existing VSD treatment is not capable of repeated wound administration and dressing changes

Even if the drug is administered, it will be quickly sucked out by negative pressure to reduce the curative effect; the continuous negative pressure connection restricts the patient's activities, and the continuous negative pressure is not easy to control, and the negative pressure is too large to cause excessive exudation or bleeding

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