Self-test for negative pressure wound therapy devices

By introducing pressure sensors and control circuits into the negative pressure wound therapy device, the leakage, flow rate, and overpressure of the device can be tested, which solves the shortcomings of existing devices in performance verification and safety, and improves the safety and effectiveness of treatment.

CN115175711BActive Publication Date: 2026-03-20T J SMITH & NEPHEW
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Patent Information

Application Number
CN202180015932.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2020-03-23
Filing Date
2021-03-23
Publication Date
2026-03-20
Estimated Expiration
2041-03-23

AI Technical Summary

Technical Problem

Existing negative pressure wound therapy devices have shortcomings in performance verification and fault detection, making it difficult to effectively detect problems such as leakage, insufficient flow, and overpressure, which affects treatment effectiveness and safety.

Method used

The negative pressure wound therapy device is equipped with a pressure sensor and control circuit, which can perform leakage tests, flow tests and overpressure tests in test mode. The device's performance can be verified through valve control to ensure safety and effectiveness.

Benefits of technology

This improved the efficiency of device performance verification, ensured the safety and effectiveness of the treatment process, reduced the occurrence of unsafe negative pressure, and improved treatment outcomes.

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Abstract

A negative pressure wound treatment apparatus can include a negative pressure source configured to be connected to a wound by a fluid flow path, a valve in the fluid flow path and configured to allow supply of negative pressure from the negative pressure source upstream of the valve in an open state and to block supply of negative pressure from the negative pressure source upstream of the valve in a closed state, a flow restrictor in the fluid flow path, and a pressure sensor configured to measure a pressure differential across the flow restrictor. The apparatus can include a control circuit configured to cause the valve to be in the open state in a normal operating mode and to perform at least one of a leak test, a flow test, or an overpressure test in a test mode.
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