Wound Therapy Line Layout for Fewer Dressing Connections
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Solution Overview
Problem
Existing wound treatment apparatuses require complex connections of multiple fluid lines to the wound dressing, making dressing changes difficult and hygiene maintenance challenging, while also being prone to fluid connection blockages.
Innovation Solution
The apparatus combines the drain and instillation lines into a single-lumen main line, connected via a connection element, with the third line connected separately, simplifying dressing attachment and enabling easier cleaning and detection of fluid blockages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple fluid lines (drain line, instillation line, rinse line) are connected separately to the wound dressing, then each line can perform its specific function independently, but the connection complexity increases and dressing changes become difficult
Solution Approach 1:
The patent combines multiple fluid lines (drain line and instillation line) into a single multi-lumen catheter that connects to the wound dressing through one integrated connection. This merging approach reduces the number of separate connections while maintaining functional independence of each fluid line through internal separation within the catheter structure.
Solution Approach 2:
The multi-lumen catheter serves multiple functions simultaneously - it acts as both a drain line for removing wound exudate and an instillation line for delivering therapeutic fluids to the wound bed, all through a single integrated component that connects to the dressing.
2Manufacturing precision
If multiple fluid lines are connected separately to the wound dressing, then fluid control is precise, but hygiene maintenance becomes challenging and cleaning is difficult
Solution Approach 1:
By merging multiple fluid lines into a single catheter assembly, the patent creates a unified structure that is easier to clean and maintain hygiene standards. The integrated design reduces the number of separate connection points where contaminants could accumulate, while internal lumens maintain precise fluid control.
3Reliability
If multiple separate fluid lines are used, then complete fluid delivery system is achieved, but blockage detection becomes difficult
Solution Approach 1:
The patent incorporates pressure sensors that provide feedback on fluid flow conditions within the catheter. By monitoring pressure differentials across the catheter lumens, the system can detect blockages or flow restrictions in real-time, enabling early intervention while maintaining complete fluid delivery capability.
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
This configuration reduces the number of connections to the wound dressing to two, facilitating easier dressing changes, enhances hygiene through improved cleaning, and allows for real-time detection of fluid blockages.
Implementation Method 1
Body fluids or secretions, which are also known as exudate, are extracted from the wound bed by way of a pump
Implementation Method 2
a liquid bag or bottle filled with the fluid to be supplied is often arranged elevated above the body part to be treated, similar to conventional infusion, so that the fluid is supplied to the part to be treated through a supply line due to the hydrostatic pressure
Implementation Method 3
the supply of the fluid to the body is effected by a pump, in particular a so-called peristaltic or tube pump
Data Source
Figure 1
Figure 2A~2C
Figure 3
AI summary
The invention relates to an apparatus for negative pressure treatment and instillation of wounds. The apparatus comprises a dressing for covering a wound in a fluid-tight manner, a drain line for extracting fluid from the wound, a negative pressure unit for generating negative pressure in the drain line, an instillation line for providing an instillation fluid, an optional rinse line for providing a rinse fluid, and a main line connected to the dressing. The main line (60) comprises a single lumen and can be connected via a connection element (64) to two of the following lines, drain line (20), instillation line (40), and rinse line (50). The invention also relates to a method for operating this apparatus.