Medical Suction Canister Liner Seal Design
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Solution Overview
Problem
Conventional medical suction systems with rigid canisters and semi-rigid disposable liners are prone to leakage and spillage due to the vulnerability of the liners and the installation design of the lids.
Innovation Solution
A medical suction system featuring a rigid canister, a semi-rigid disposable liner, and a lid with a peripheral seal member and adhesive material that provides improved sealing characteristics by adhering to the liner's flange, reducing the likelihood of spillage and leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional semi-rigid disposable liner is used in a rigid canister, then the system is disposable and easy to clean, but the liner easily ruptures and the system is vulnerable to leakage or spillage
Solution Approach 1:
The lid combines a rigid peripheral structure with a compliant peripheral seal member made of elastomeric material. This composite construction allows the seal to conform to the canister opening while the rigid lid maintains structural integrity, preventing liner rupture and leakage during disposal use.
Solution Approach 2:
The peripheral seal member is made of a compliant elastomeric material that forms a flexible sealing interface between the lid and canister. This flexible seal adapts to the canister opening geometry and maintains sealing pressure without rigid contact, preventing liner rupture while maintaining disposable functionality.
2Ease of operation
If the lid structure is simplified for easy installation, then the system is easier to operate, but the sealing capability against spillage is reduced
Solution Approach 1:
The lid is segmented into distinct functional zones: a rigid peripheral structure for structural support and easy handling, a compliant peripheral seal member for sealing, and a central portion for lid functionality. This segmentation allows each zone to optimize its function while working together to provide both easy installation and reliable sealing.
Solution Approach 2:
The peripheral seal member changes its physical parameters (shape, position) as the lid is installed onto the canister. The seal progresses from a compressed state during installation to a sealed state when the lid is fully seated, providing progressive sealing that ensures both ease of operation and reliable spill prevention.
3Reliability
If a seal between the atmosphere and exterior portions of the liner is implemented, then spillage is reduced, but the device complexity increases
Solution Approach 1:
The lid merges multiple sealing functions into a single integrated component. The peripheral seal member simultaneously seals the interface between the lid and canister, seals the liner exterior portions, and prevents atmospheric contamination. This consolidation provides comprehensive spillage prevention without adding separate sealing mechanisms, maintaining device simplicity.
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 effectively reduces spillage and leakage by maintaining a secure seal between the liner and the atmosphere, even when the liner is full, and is designed for easy disposal and reduced storage space.
Implementation Method 1
A peripheral seal member extending from an interior surface of the lid and positionable to bear against a portion of the rigid canister to provide a seal between the atmosphere and exterior portions of the liner located within the canister
Implementation Method 2
A peripheral adhesive material is adhered to the interior surface of the lid adjacent the peripheral seal member and positionable to adhere to the flange of the liner when the lid is installed on the liner to provide a seal between the interior of the liner and locations exterior the liner
Data Source
AI summary
A disposable liner/lid system useable with a rigid canister and having an adhesive seal to provide improved sealing characteristics and effectively reduce the likelihood of spillage and leakage. The liner includes a flange and the lid includes adhesive that is secured to the interior of the lid and the flange of the liner when installed to provide a seal.