Multi-Orientation Canister Aperture Design for Exudate Management
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Solution Overview
Problem
Existing reduced pressure treatment systems face issues with exudate movement and filter contamination due to orientation changes, leading to air flow restriction and false full alarms, which compromise treatment effectiveness and resource efficiency.
Innovation Solution
A multi-orientation canister design with a main chamber and filter chamber separated by apertures of different diameters, allowing fluid communication to be redirected to prevent exudate contact with the filter until the canister is full, and featuring a gelling agent to form a gel that blocks apertures and directs fluid flow effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single aperture is used to provide fluid communication between the main chamber and filter chamber, then the device structure is simple, but exudate can contact the filter causing contamination and false alarms
Solution Approach 1:
The single aperture is divided into multiple apertures of different sizes (first aperture and second aperture). The larger first aperture allows fluid communication when the canister is not full, while the smaller second aperture serves as a backup path that remains accessible when the first aperture becomes blocked by exudate. This segmentation prevents filter contamination while maintaining relatively simple device structure.
Solution Approach 2:
Different apertures are positioned at different locations on the partition wall with different sizes. The first aperture is larger and positioned to be blocked by exudate when the canister reaches certain fill level, while the second aperture is smaller and positioned to remain accessible. This local differentiation ensures reliable fluid communication path selection based on local conditions (exudate level).
2Adaptability or versatility
If the canister orientation changes during treatment, then patient mobility is improved, but exudate may move and contact the filter causing air flow restriction
Solution Approach 1:
The fluid communication system is designed to dynamically adapt to canister orientation changes. The multiple apertures at different positions and sizes allow the system to automatically select appropriate fluid paths based on the current orientation and exudate level. This dynamic adaptation maintains reliable air flow through the filter while enabling patient mobility and various positioning during treatment.
3Quantity of substance
If the canister is designed to maximize exudate storage capacity, then treatment duration is extended, but the filter becomes more vulnerable to exudate contact
Solution Approach 1:
The system preliminarily establishes multiple fluid communication paths (first and second apertures) before exudate accumulation reaches problematic levels. The larger first aperture handles normal operation, while the smaller second aperture is pre-positioned as a protective measure that activates when the first aperture blocks. This preliminary configuration allows maximum exudate storage while preemptively protecting the filter from contamination.
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 design extends filter life, reduces false alarms, and maximizes exudate storage capacity by ensuring the filter remains protected from exudate until the canister is full, maintaining consistent reduced pressure and efficient treatment.
Implementation Method 1
featuring a gelling agent to form a gel that blocks apertures and directs fluid flow effectively
Data Source
AI summary
Systems and methods for reduced pressure tissue treatments, including a multi-orientation canister. The canister includes an inlet for receiving fluids from a tissue site, and a main chamber in fluid communication with the inlet for receiving fluids from the inlet. The canister includes a filter chamber separated from the main chamber by one or more filter chamber walls. The one or more filter chamber walls includes a primary hole having a first diameter and a secondary hole having a second diameter smaller than the first diameter. The primary hole provides a first path of fluid communication between the filter chamber and the main chamber. The canister includes an outlet for providing fluid communication between the filter chamber and a reduced pressure source.