Negative Pressure Wound Therapy Controller with Intermittent Pumping
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Solution Overview
Problem
Current wound dressing technologies, including topical negative pressure (TNP) therapy, face challenges in efficiently managing pressure settings and detecting conditions in the fluid flow path, which can lead to suboptimal wound healing and equipment malfunctions.
Innovation Solution
A system comprising a negative pressure therapy device with a controller that adjusts pressure settings based on a compression setting, detects conditions such as blockages or leaks, and provides an indication of these events, ensuring optimal wound treatment and apparatus operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the source of negative pressure operates continuously to reach the pressure setting quickly, then the pressure control speed is improved, but tissue damage risk increases due to excessive compression
Solution Approach 1:
The controller implements intermittent operation of the negative pressure source by alternating between active phases (applying negative pressure to advance toward the pressure setting) and pause phases (allowing tissue recovery). This periodic action pattern enables the system to achieve the pressure setting efficiently while preventing continuous excessive compression that could damage tissue. The cycle repeats until the pressure setting is reached, balancing speed with safety.
2Object-affected harmful factors
If the controller uses multiple intermediate pressure settings to reach the target pressure, then tissue damage is prevented, but the treatment time increases
Solution Approach 1:
The controller dynamically adjusts the negative pressure source operation by transitioning through multiple intermediate pressure settings rather than applying the full target pressure immediately. The system adapts the pressure progression based on tissue response, using a sequence of increasing negative pressure levels that are optimized to prevent tissue damage while minimizing overall treatment time. This dynamic approach allows flexible adaptation to different wound conditions.
3Measurement precision
If the pressure sensor continuously monitors pressure under the wound dressing, then measurement precision is improved, but energy consumption increases
Solution Approach 1:
The pressure sensor provides continuous feedback to the controller about the actual pressure under the wound dressing. This feedback enables the controller to make real-time adjustments to the negative pressure source operation, ensuring precise pressure control while optimizing energy usage. The system only activates the negative pressure source when needed to correct pressure deviations, rather than operating continuously, thus maintaining measurement precision while reducing energy consumption.
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 enhances wound healing by maintaining precise pressure control and detecting potential issues in the fluid flow path, thereby improving treatment efficacy and reducing equipment failures.
Implementation Method 1
a source of negative pressure configured to be in fluidic communication with a wound dressing and configured to aspirate fluid from the wound
Data Source
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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 fiuidically connected to facilitate delivery of negative pressure to a wound. The system can be configured to efficiently deliver negative pressure in continuous and intermittent modes. The system can also be configured to gradually ramp up and down to set pressure values. The system can also be configured to detect and indicate presence of certain conditions, such as low pressure, high pressure, leak, canister full, and the like. Detection and indication of the presence of at least some of these conditions can be enabled and disabled.