A negative pressure airtight drainage wound protection device and preparation method thereof

Abstract

The invention provides a negative pressure closed drainage wound protection device. The device comprises a medical foam material, a drainage pipe, a flushing pipe and a connecting pedestal, wherein the connecting pedestal consists of a substrate and elbows; a draining hole and a flushing hole are formed in one side of the substrate; the other side of the substrate is fixedly connected with elbows which are communicated with the draining hole and the flushing hole, and the sizes of the elbows correspond with those of the draining hole and the flushing hole; the draining pipe and the flushing pipe respectively consist of an inner pipe and an outer pipe, each inner pipe is arranged in the medical foam material, and one end of each inner pipe is communicated and connected with the elbow corresponding to the connecting pedestal; a connecting plug is arranged at one end of each outer pipe, and can be hermetically inserted into the draining hole or the flushing hole, so that each inner pipe can be communicated with each outer pipe; the medical foam material is in a hard and dry state with water content not higher than 10% (w / w). The negative pressure closed drainage wound protection device is convenient and safe to use, and has a good closing effect.

Description

Technical field [0001] The invention relates to a medical article, in particular to a negative pressure sealed drainage wound protection product for body surface wounds and a preparation method thereof. Background technique [0002] Vacuum sealing drainage (Vacuumsealingdrainage / VSD, referred to as VSD technology) has been invented in 1992 and has been developed and promoted in Europe, America and my country. It is widely used clinically in burn plastic surgery, body surface tears and ulcers. Protection and treatment of wounds with other diseases. [0003] The basic structure of the complete set of VSD technology is composed of negative pressure source, drainage tube, media material between wound surface and drainage tube (such as porous materials such as polyvinyl alcohol) and sealing film. The structure is: the wall of one end of the drainage tube is provided with multiple holes, and the end is placed inside the medium. When in use, the medium material connected with the drainage...

AI Technical Summary

Problems solved by technology

Although the irrigation tube is made of a soft material, it is still a hard foreign body, especially its sharper end, compared to a wound with no skin or incomplete skin

In clinical application, it is found that this design can stimulate the wound surface to cause pain for patients, and may even cause secondary damage to the wound surface; in addition, this design can only make the irrigation liquid reach a small part of the wound surface directly, and other parts of the wound surface still need medium material transmission, so this design do more harm than good

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