Ion Exchange Member for Wound Fluid Absorption
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Solution Overview
Problem
Reduced-pressure wound therapy systems incorporating superabsorbent polymers often experience absorption capacity less than rated, necessitating additional absorbent or more frequent dressing changes, which complicates treatment and increases costs.
Innovation Solution
Incorporating an ion exchange member between the manifold and absorbent to reduce ionic concentration of wound fluid, enhancing absorption efficiency of the absorbent by positioning the ion exchange media between the tissue site and the fluid storage device, allowing for increased fluid absorption and reduced dressing changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If superabsorbent polymers are used as absorbents in reduced-pressure wound therapy systems, then the absorbent capacity should be high, but the real-world absorption capacity is less than the rated capacity
Solution Approach 1:
An ion exchange member is introduced as an intermediary component between the wound and the absorbent. This member removes ions from the wound fluid through ion exchange, thereby reducing the ionic concentration of the fluid before it reaches the superabsorbent polymer. This mediation resolves the contradiction by creating optimal conditions for the absorbent to function at its rated capacity.
Solution Approach 2:
The system changes the ionic concentration parameter of the wound fluid by passing it through an ion exchange member. This parameter change (reduction of ionic concentration) enables the absorbent to achieve its rated absorption capacity, resolving the discrepancy between expected and actual performance.
2Quantity of substance
If additional absorbent is used to compensate for reduced absorption capacity, then the absorption capacity is improved, but the device complexity and cost increase
Solution Approach 1:
Rather than increasing the amount of absorbent, the system introduces an ion exchange member as an intermediary that pre-processes the wound fluid. This approach achieves the desired absorption capacity without increasing absorbent quantity or system complexity.
Solution Approach 2:
The ion exchange member performs preliminary action by removing ions from the wound fluid before the fluid reaches the absorbent. This pre-treatment enables the absorbent to function efficiently at its rated capacity, avoiding the need for additional absorbent material or increased system complexity.
3Quantity of substance
If additional absorbent is used to compensate for reduced absorption capacity, then the absorption capacity is improved, but the treatment cost increases
Solution Approach 1:
The ion exchange member performs preliminary removal of ions from wound fluid, enabling the absorbent to achieve its rated capacity. This prevents the need to purchase and apply additional absorbent material, thereby reducing treatment costs while maintaining adequate absorption capacity.
Solution Approach 2:
By changing the ionic concentration parameter of the wound fluid through ion exchange, the system enables the absorbent to function at its rated capacity. This parameter modification eliminates the need for additional absorbent purchases, reducing overall treatment costs.
4Reliability
If the number of dressing changes is increased to maintain absorption capacity, then the absorption performance is improved, but the loss of time and treatment complexity increase
Solution Approach 1:
The ion exchange member performs preliminary treatment of wound fluid by removing ions before the fluid reaches the absorbent. This pre-treatment maximizes the absorbent's efficiency, extending the time between dressing changes and reducing the frequency of interventions.
Solution Approach 2:
The ion exchange member continuously processes wound fluid as it passes through, maintaining optimal conditions for absorption throughout the dressing wear period. This continuous action ensures sustained absorption performance, reducing the need for frequent dressing changes.
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 ion exchange system increases the absorbent's capacity to hold wound fluid, potentially reducing the amount of absorbent needed and the frequency of dressing changes, thereby improving treatment efficiency and cost-effectiveness.
Implementation Method 1
an ion exchange member adapted to be fluidly coupled between the manifold and the absorbent
Implementation Method 2
supply reduced pressure to the tissue site to draw fluid from the tissue site to the absorbent through the ion exchange member
Data Source
AI summary
A system, method, and apparatus for treating a tissue site with reduced pressure includes a dressing adapted to be positioned proximate the tissue site. An absorbent may be adapted to be fluidly coupled to the manifold, and an ion exchange member may be adapted to be fluidly coupled between the manifold and the absorbent. A sealing member may be adapted to cover the tissue site to form a sealed space having the manifold disposed therein. A reduced-pressure source may be adapted to be fluidly coupled to the manifold.