Auto-replenishing Wound Dressing Pneumatic Fluid Delivery
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Solution Overview
Problem
Current methods for treating skin defects face challenges in consistently delivering a specific volume and concentration of medicament to the affected area, as dressings often absorb the medicament, leading to ineffective concentrations and potential side effects due to uncontrolled delivery.
Innovation Solution
A fluid delivery system with a housing and reservoirs for a pressurized gas and medicament fluid, where the gas reservoir displaces the medicament through a feed conduit to a dressing, ensuring a consistent and controlled release of the active ingredient to the skin defect, regardless of the dressing's orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a medicament fluid is applied to a dressing, then the skin defect is treated, but the dressing absorbs the medicament leading to uncontrolled concentration and potential side effects
Solution Approach 1:
The system uses a gas reservoir connected to the dressing to apply pressurized gas that displaces medicament from a fluid source through a feed conduit onto the dressing. This pneumatic mechanism provides controlled, consistent delivery of medicament at therapeutically effective concentrations, preventing both under-delivery and over-delivery that causes side effects.
2Quantity of substance
If a medicament fluid is applied to a dressing, then the skin defect receives treatment, but the concentration of active ingredient becomes uncontrolled and may fall below or exceed therapeutic range
Solution Approach 1:
Pressurized gas from the gas reservoir controls the flow and concentration of medicament fluid onto the dressing, ensuring precise delivery within therapeutic range
Solution Approach 2:
The system changes the physical state and delivery parameters of the medicament by using pressurized gas to control fluid displacement, maintaining consistent concentration throughout the treatment period
3Adaptability or versatility
If the dressing is oriented in different positions, then the treatment can be applied to various body locations, but gravity affects the distribution of medicament on the dressing
Solution Approach 1:
The pressurized gas system overcomes gravitational effects by forcing medicament onto the dressing from the feed conduit, ensuring uniform distribution regardless of the dressing's orientation on the patient's body
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 system maintains a therapeutically effective concentration of the active ingredient at the skin defect, providing consistent and controlled delivery, thereby enhancing treatment efficacy while minimizing side effects and resistance.
Implementation Method 1
a gas reservoir (22) in communication with the fluid source (26), wherein motion or pressure by the gas reservoir (22) results in corresponding motion or pressure in the fluid source (26)
Data Source
AI summary
Apparatus and methods to treat skin defects include a pump with reservoirs for a pressurization gas and a fluid. Upon activation, the pump generates a gas introduced into the gas reservoir, a movable wall of which displaces a movable wall of a fluid source, thus dispensing the fluid into the dressing to spread throughout irrespective of orientation of the dressing, maintaining a transport fluid (e.g. carrier) in the dressing and in contact with a skin defect being treated. The dressing may have a distribution network, and multiple members, dispensing the fluid into the dressing and in contact with a skin defect being treated.