Negative Pressure Wound Therapy Blood Detection Control
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Solution Overview
Problem
Existing negative pressure wound therapy systems lack effective methods to detect and respond to the presence of blood in the fluid flow path, which can lead to potential harm to patients and complications.
Innovation Solution
The system incorporates pressure sensors and a controller to monitor fluid flow path pressure, detect the presence of blood, and provide an indication or take corrective actions such as deactivating the negative pressure source or activating alarms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If negative pressure therapy is applied to treat wounds, then wound healing is promoted, but undetected blood presence can cause patient harm
Solution Approach 1:
The system performs preliminary detection of blood in the fluid flow path before blood can cause harm to the patient. The controller continuously monitors for blood presence and triggers an alarm or shuts down the negative pressure source before a harmful situation develops, preventing patient harm proactively
Solution Approach 2:
The system implements feedback by continuously monitoring the fluid flow path for blood presence and using this information to control the negative pressure source. When blood is detected, the system provides feedback through alarms or shutdown commands, creating a closed-loop safety mechanism that responds to changing conditions in real-time
2Reliability
If blood detection capability is added to the system, then patient safety is improved, but device complexity increases
Solution Approach 1:
The controller is designed to perform multiple functions: it controls the negative pressure source, monitors pressure, detects blood presence, and manages alarm outputs. By making the controller multi-functional, the patent avoids adding separate dedicated components for each function, thereby reducing overall system complexity while maintaining comprehensive safety capabilities
Solution Approach 2:
The patent combines the blood detection functionality with the existing pressure monitoring system. The same pressure sensors and controller that monitor negative pressure are also used to detect blood presence in the fluid flow path, merging multiple detection functions into a single integrated system rather than adding separate independent detection subsystems
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively detects blood in the fluid flow path, preventing further administration of negative pressure and minimizing patient harm by providing timely alerts and responses.
Implementation Method 1
one or more pressure sensors configured to monitor a pressure in the fluid flow path
Data Source
AI summary
In some embodiments, a negative pressure wound therapy system can detect and classify one or more operational conditions, including detection of a wound bleeding. The system can react to detection of blood by providing an indication, reducing the intensity or stopping therapy, releasing negative pressure, etc. In certain embodiments, the system can detect one or more additional operational conditions, such as change in vacuum pressure, gas leak rate change, exudate flow rate change, water flow rate change, presence of exudate, presence of water, etc. The system can detect and distinguish between different operational conditions and provide indication or take remedial action.