Telescopic Medical Suction Liner for Vacuum Stability
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Solution Overview
Problem
Medical suction disposal liners face challenges in being self-supporting without being too rigid, which affects packaging and transport, and existing solutions like concertina folds are not resistant to vacuum changes, leading to undesirable volume fluctuations.
Innovation Solution
A flexible liner with longitudinally telescopic portions and internal fold lines that allow extension and shortening, reducing length while maintaining stability under vacuum, and using a central rolling seal and varying diameters to facilitate easy packaging and use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the bag is made flexible for easy packaging, then packaging efficiency is improved, but the bag becomes non-self-supporting and cannot stand up by itself
Solution Approach 1:
The liner incorporates a telescopic portion with fold lines that allow the structure to dynamically transition between extended and retracted states. This dynamic configuration enables the liner to be self-supporting when extended for use, yet compact when retracted for packaging, resolving the contradiction between flexibility for packaging and rigidity for self-support.
2Stability of the object's composition
If more rigid structures are used to make the liner self-supporting, then self-supporting capability is improved, but packaging and transport space increases
Solution Approach 1:
The telescopic portion allows one section of the liner to be nested within another section when retracted. This nesting mechanism enables the liner to maintain self-supporting capability when extended while reducing to a compact form for packaging, significantly decreasing the volume required for storage and transport.
3Ease of manufacture
If crushable liners are used to reduce packaging space, then packaging efficiency is improved, but the liner extends away from the crushed position and requires additional holding mechanisms
Solution Approach 1:
The liner is segmented into a fixed portion and a telescopic portion with fold lines. This segmentation allows the telescopic portion to be retracted into the fixed portion for compact packaging without requiring external holding mechanisms, while maintaining structural integrity and simplicity during both packaging and use.
4Volume of moving object
If concertina folds are used to reduce length, then packaging space is reduced, but the arrangement is not resistant to vacuum changes and causes volume fluctuations
Solution Approach 1:
The telescopic portion with fold lines provides a controlled dynamic structure that can accommodate vacuum changes without causing volume fluctuations. Unlike concertina folds, the telescopic design maintains structural resistance to vacuum while allowing for compact packaging, ensuring reliable performance during suction operations.
Data Source
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AI summary
A medical suction disposal system liner (10) is provided for use as a medical waste receptacle in conjunction with a rigid vacuum jar (150). The liner (10) comprises a flexible cylindrical body (15) having one or more longitudinally telescopic portions (25, 30) for allowing extension and/or shortening of the body (15). The body (15) includes one or more circumferentially extending fold lines (25,30) which define and facilitate the or each telescopic portion.