A portable negative pressure wound therapy device

By designing a portable negative pressure drainage device, which utilizes a sponge layer and a breathable pore structure, the tearing of the patient's skin during dressing changes is reduced, solving the problem of secondary damage caused by dressing changes in existing technologies, and improving the practicality of the device and the patient's comfort.

CN224462022UActive Publication Date: 2026-07-07SICHUAN ACADEMY OF MEDICAL SCI SICHUAN PROVINCIAL PEOPLES HOSPITAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SICHUAN ACADEMY OF MEDICAL SCI SICHUAN PROVINCIAL PEOPLES HOSPITAL
Filing Date
2025-02-24
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing negative pressure drainage devices can cause secondary damage to the patient's skin when removing or changing dressings.

Method used

A portable negative pressure drainage device is designed, including a negative pressure source instrument, a dressing, and a drainage component. The dressing consists of a sponge layer, a baffle, and an adhesive layer. There is a gap between the baffle and the patient's skin, and the ventilation holes connect to the sponge layer. The negative pressure source instrument is connected to the dressing through the drainage component to form a negative pressure environment to absorb the accumulated fluid and reduce the tearing of the dressing on the skin.

Benefits of technology

It reduces secondary damage to the patient's skin during dressing changes, improves the fit and usability of the dressing, reduces patient pain, and reduces the frequency of dressing changes.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of negative pressure drainage technology, specifically a portable negative pressure drainage device, comprising a negative pressure source instrument, a dressing, and a drainage component. The negative pressure source instrument and the dressing are connected and cooperate through the drainage component to form a negative pressure environment to absorb fluid flowing from the patient's skin. The dressing includes a sponge layer, a baffle, and an adhesive layer. The adhesive layer adheres to the patient's skin, and the baffle corresponds to the wound area of ​​the patient's skin. The side of the baffle facing the patient's skin is used to place wet dressing medication, and the side of the baffle away from the patient is connected to the sponge layer. A gap exists between the side of the baffle facing the patient's skin and the patient's skin. The baffle is provided with ventilation holes to connect the gap between the sponge layer, the baffle, and the patient's skin. The sponge layer is used to absorb bodily fluids flowing from the patient's skin. This utility model utilizes the gap between the baffle and the patient's skin to reduce tearing of the patient's wound skin when changing or removing the dressing, thereby reducing the patient's pain.
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