Negative Pressure Wound Therapy Leak and Blockage Detection
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Solution Overview
Problem
Existing wound treatment systems lack effective methods for detecting leaks, blockages, and canister full conditions during negative pressure wound therapy, which can compromise treatment efficacy and patient safety.
Innovation Solution
A wound treatment system equipped with a pressure sensor, controller, and graphical display to monitor fluid flow path pressure and flow rate, detecting leaks, blockages, and canister full conditions, and providing real-time feedback through a graphical interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If negative pressure wound therapy is applied to treat wounds, then wound healing is improved, but undetected leaks or blockages can compromise treatment efficacy and patient safety
Solution Approach 1:
The system continuously monitors pressure in the fluid flow path and provides real-time feedback to detect leaks, blockages, and canister full conditions. The controller receives pressure measurements from the pressure sensor and uses this feedback to identify abnormal conditions that compromise treatment efficacy, allowing for immediate intervention to maintain reliable wound healing.
2Object-affected harmful factors
If pressure monitoring is added to detect leaks and blockages, then patient safety is improved, but device complexity increases
Solution Approach 1:
The pressure sensor serves multiple functions: detecting leaks, identifying blockages, and determining canister full conditions. By using a single pressure monitoring component to address multiple harmful conditions, the system improves patient safety without proportionally increasing device complexity. The controller integrates these diverse detection functions into a unified monitoring system.
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
Enhances the reliability and safety of negative pressure wound therapy by promptly identifying and addressing fluid leaks, blockages, and full conditions, thereby ensuring consistent treatment efficacy and patient safety.
Implementation Method 1
a pressure sensor configured to measure pressure in a fluid flow path configured to fluidically connect the wound dressing and the source of negative pressure
Implementation Method 2
a source of negative pressure configured to be in fluidic communication with a wound dressing, the source of negative pressure configured to aspirate fluid from the wound
Implementation Method 3
The apparatus can include a tachometer configured to measure the speed of the motor. The controller can be further configured to measure a first plurality of motor speeds during a first period of time and to average the first plurality of motor speeds, the average being indicative of the rate of flow
Data Source
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Figure 2B
AI summary
Embodiments of a negative pressure wound therapy systems and methods for operating the systems are disclosed. In some embodiments, a system includes a pump assembly, canister, and a wound dressing configured to be positioned over a wound. The pump assembly, canister, and the wound dressing can be fluidically connected to facilitate delivery of negative pressure to a wound. The pump assembly can present graphical user interface screens for controlling and monitoring delivery of negative pressure. The system can be configured to efficiently deliver negative pressure and to detect and indicate presence of certain conditions, such as low pressure, high pressure, leak, canister full, and the like. Monitoring and detection of operating condition can be performed by measuring one or more operational parameters, such as pressure, flow rate, and the like.