Expandable Vial Adaptor Housing for Pressure-Regulated Transfer
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Solution Overview
Problem
Existing vial adaptors do not effectively regulate pressure during fluid transfer between a vial and a syringe, leading to potential contamination and leakage of medical substances into the ambient air.
Innovation Solution
A vial adaptor with an expandable and contractible chamber impermeable to gas and liquid, featuring a housing that protects the chamber and allows for fluid communication between the vial and syringe while minimizing exposure to ambient air, thus regulating pressure and enhancing safety and space optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an expandable and contractible chamber is used to regulate pressure during fluid transfer, then pressure regulation and contamination prevention are improved, but device complexity increases
Solution Approach 1:
The chamber is designed to be expandable and contractible, allowing it to dynamically change volume in response to pressure changes during fluid transfer. This dynamic adaptation enables automatic pressure regulation without complex control systems, as the chamber expands to accommodate excess fluid or contracts to maintain positive pressure, thereby improving reliability while avoiding excessive complexity.
Solution Approach 2:
The chamber's volume parameter is made variable through its expandable and contractible design. By changing the chamber's volume in response to pressure conditions, the system automatically regulates pressure during fluid transfer from the vial to the syringe, preventing contamination while maintaining a relatively simple overall device structure.
2Object-affected harmful factors
If the chamber is made impermeable to gas and liquid, then contamination prevention is improved, but manufacturing complexity increases
Solution Approach 1:
The chamber is constructed using flexible impermeable membranes or thin films that are inherently resistant to gas and liquid penetration. These flexible barriers provide effective contamination prevention while being relatively simple to manufacture and integrate into the device, avoiding the need for complex multi-layer constructions or specialized manufacturing processes.
3Volume of moving object
If the housing is made expandable to accommodate the chamber, then space optimization is improved, but structural complexity increases
Solution Approach 1:
The expandable chamber is nested within the expandable housing, with both components capable of expanding and contracting together. This nested configuration allows the device to optimize its volume by expanding when fluid transfer requires more space and contracting when not in use, while the shared expansion mechanism reduces overall structural complexity compared to having separate expansion systems for the chamber and housing.
Solution Approach 2:
The housing and chamber are designed to expand and contract as an integrated system, merging their expansion functions. This combination allows the device to achieve space optimization during fluid transfer while maintaining a simpler overall structure, as the housing's expansion naturally accommodates the chamber's expansion without requiring additional independent mechanisms.
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 vial adaptor effectively regulates pressure during fluid transfer, reducing contamination and leakage risks while optimizing space usage, making it safer and more convenient for handling medical substances.
Implementation Method 1
A vial adaptor is therefore provided in accordance with claim 1. This comprises a body portion and an expandable and/or contractible chamber impermeable to gas and/or liquid.
Implementation Method 2
According to a first aspect, the vial adaptor may also comprise an expandable housing casing the chamber. The housing provides a protection to the chamber. The expandability of the housing provides space optimization capability to the vial adaptor.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A vial adaptor (1010) may comprise a body portion (1020). The body portion includes a vial connection port (1022), a syringe connection port (1024), an access passageway (1026) between the vial connection port and the syringe connection port, and a regulation passageway (1028). The vial adaptor may further comprise an expandable and/or contractible chamber (1040) impermeable to gas and/or liquid, the regulation passageway being between the vial connection port and the chamber, and an expandable housing (1050) casing the chamber. Such a vial adaptor constitutes an improved vial adaptor.