Negative pressure sealing drainage system for deep cavity wound surface operation nursing

Abstract

The invention relates to a negative pressure sealing drainage system for deep cavity wound surface operation nursing. The system comprises a columnar porous foam drainage block, a thread type extendable sealing cover, a medical membrane, a drainage tube, a liquid storing container and a negative pressure source. Hydrophily foam is adopted as the columnar porous foam drainage block. The periphery of the columnar porous foam drainage block is covered with the thread type extendable sealing cover. The flange of the outer edge of the lowest end of the thread type extendable sealing cover is attached to skin around the deep cavity wound surface through the medical membrane. A part of the columnar porous foam is inserted into the deep cavity wound surface, a part of the columnar porous foam is retained in a thread type extendable coating, the interior of the columnar porous foam is communicated with an outlet of the smallest-diameter part of the upper end of the thread type extendable sealing cover through the drainage tube, the drainage tube is communicated with a connecting tube through a straight joint and connected into the liquid storing container, and the liquid storing container is connected with the negative pressure source through the connecting tube. The area of the section of the columnar porous foam drainage block is 0.8-3 cm<2>, the length is 10-28 cm, and the foam hole diameter is 1-2 cm.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a negative pressure sealing drainage system used in deep cavity wound surgical care. Background technique [0002] Currently, superficial wounds are usually treated with adjuvant replacement. The treatment takes a long time and the curative effect is not good. The gauze is easily soaked by deep objects, leading to contamination and reinfection, and the gauze needs to be replaced frequently. Drainage tubes are often used for deep cavity wounds and cavities. Regardless of active or passive drainage, they all rely on the end holes and limited side holes of the drainage tube for drainage. It is impossible to fully contact the drainage cavity. It is a point or Multi-point drainage, and the drainage tube is exposed to the drainage cavity, which is easy to be blocked. [0003] The negative pressure sealing drainage technology is realized through a negative pressure sealing drai...

AI Technical Summary

Problems solved by technology

[0004] However, for patients with deep cavity wounds where the effusion distribution area is relatively small, it is difficult to use ordinary foam to penetrate deep into the root of the wound, and the effect of bonding with the wound is average. As the deep cavity wounds of patients gradually recover, the wound area continues to decrease , the medical staff need to replace the foam material corresponding to the wound area several times, and re-apply the film to seal the deep cavity wound.

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