A self-powered negative pressure wound drainage dressing

By using negative and positive ion electrodes to form a regional electric field in the self-generating negative pressure drainage dressing, the problems of easy wire disconnection and wound adhesion are solved, realizing local electrical stimulation treatment without external power supply, and improving the comfort of dressing and treatment effect.

CN121622355BActive Publication Date: 2026-06-05CHANGSHA HAIRUN BIOTECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGSHA HAIRUN BIOTECHNOLOGY CO LTD
Filing Date
2026-02-04
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing negative pressure drainage dressings are prone to falling off or breaking when connected to a power source with wires, leading to the failure of the electric field. Furthermore, the dressings tend to stick to the wound, affecting the wound healing effect.

Method used

A self-generating negative pressure drainage dressing was designed. It uses negative and positive ion electrodes to form a regional electric field on the gel layer. Deionized liquid is added through ion channels to achieve local electrical stimulation therapy. Suction cups and negative pressure components are used to ensure sealing and comfort.

Benefits of technology

This technology enables local electrical stimulation therapy without the need for an external power source, improving the comfort and safety of the application, preventing wound adhesion, and ensuring the effectiveness and convenience of the treatment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a self-power generation negative pressure drainage dressing, which comprises a dressing body, a negative pressure assembly arranged on the dressing body, a gel layer arranged at the bottom of the dressing body and used for covering a wound surface, a negative ion electrode arranged in the middle of the gel layer, a positive ion electrode arranged at the edge of the gel layer, and a plurality of ion channels arranged between the negative ion electrode and the positive ion electrode, wherein deionized liquid is selectively added into the ion channels, positive ions in the positive ion electrode are allowed to move to the negative ion electrode along preset paths, and thus a regional electric field is formed on the gel layer between the ion channels to which the deionized liquid is added. The dressing has the advantages of convenient application, good comfort and selective treatment.
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