Hand-Held Fluid Transfer Device With Segmented Base And Disposable Needle
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Solution Overview
Problem
Current transfer devices for injecting medication into injection devices are costly to manufacture and result in significant waste, and there is a need for improved designs that can efficiently transfer, dilute, or reconstitute medications while minimizing waste and cost.
Innovation Solution
A portable transfer device or module that includes a base with a vial adapter, syringe adapter, and flow control valve, allowing for efficient transfer of medications from vials to injection devices, with optional features like hydrophobic filters to prevent air and particulate contamination, and ergonomic design for user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional transfer devices are used to transfer medication from vials to injection devices, then the transfer function is achieved, but manufacturing cost increases and waste is generated
Solution Approach 1:
The transfer device is divided into separate functional modules: a base unit and a transfer needle assembly. The transfer needle can be detached and replaced, allowing the expensive sterile barrier to be disposable while reusing the main body, thus reducing overall manufacturing cost and waste.
Solution Approach 2:
A sterile barrier is integrated into the transfer needle assembly that is designed to be disposable. This allows the critical sterile component to be discarded after single use, ensuring sterility without requiring the entire device to be expensive and disposable, thereby reducing waste and manufacturing cost.
2Reliability
If hydrophobic filters are added to prevent air and particulate contamination, then sterility and safety are improved, but device complexity increases
Solution Approach 1:
The hydrophobic filter is integrated directly into the needle hub assembly, combining the filtration function with the structural component. This eliminates the need for separate filter housings and connections, reducing device complexity while maintaining sterility and safety.
Solution Approach 2:
The hydrophobic filter acts as an intermediary element between the fluid path and the external environment, allowing air to pass through while blocking liquids and particulates. This simple passive mechanism provides active protection without requiring complex active control systems.
3Manufacturing precision
If a flow control valve is included to manage fluid transfer, then transfer precision is improved, but manufacturing cost and device complexity increase
Solution Approach 1:
The system uses the syringe plunger mechanism to provide self-regulated flow control. As the plunger moves, it naturally controls the fluid transfer rate and volume without requiring an external valve, thereby achieving transfer precision while avoiding the cost and complexity of additional valve components.
Solution Approach 2:
The manual syringe plunger mechanism replaces the need for a complex flow control valve system. The mechanical action of the plunger directly controls fluid displacement, providing precise transfer capability through simple mechanical means rather than complex valve 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 solution reduces manufacturing costs and waste by enabling efficient transfer and reconstitution of medications, while ensuring sterility and user-friendly operation, thereby improving the overall efficiency and safety of the medication delivery process.
Implementation Method 1
optional features like hydrophobic filters to prevent air and particulate contamination
Data Source
AI summary
A disposable transfer device has an injection device support surface for receiving an on-body injection device thereon and a flow path arrangement for transfer of fluid into the injection device, the transfer device being configured to define preferential gripping areas for user gripping of an injection device when such device is located on the support surface and interfering areas for interfering with user gripping of the injection device in the interfering areas.