Axially Movable Fluid Transfer Device for Hazardous Drug Safety
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Solution Overview
Problem
Current closed-system transfer devices (CSTDs) for hazardous drugs are complex and costly to manufacture, and difficult for healthcare workers to operate, posing risks of exposure to toxic chemotherapy drugs.
Innovation Solution
A fluid transfer device with a simplified design featuring cylindrical portions, sealing members, and connectors for secure connections to syringes, vials, and IV adapters, allowing for easy reconstitution and transfer of medications within a closed system, reducing the number of components and user actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex closed-system transfer devices are used to prevent hazardous exposure, then safety is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The device combines multiple functions into a single integrated structure: the body houses both the first connector for syringe attachment and the second connector for vial attachment, while the movable portion integrates the needle assembly and sealing mechanism. This merging reduces the number of separate components while maintaining the closed-system safety function.
Solution Approach 2:
The body serves multiple functions: it provides structural housing, contains the sealing mechanism, supports both connectors for different attachment purposes, and houses the movable portion. The movable portion itself serves dual functionality by enabling both fluid transfer and sealing operations.
2Reliability
If complex closed-system transfer devices are used to prevent hazardous exposure, then safety is improved, but manufacturing cost increases
Solution Approach 1:
By merging multiple components into fewer integrated parts, the device reduces assembly steps and manufacturing complexity. The single-body design with integrated connectors and sealing mechanisms requires fewer manufacturing processes compared to traditional multi-component CSTDs.
3Reliability
If traditional CSTDs are used to ensure closed-system transfer, then safety is improved, but ease of operation decreases
Solution Approach 1:
The movable portion can transition between retracted and extended positions, dynamically adapting the device configuration based on operational needs. This dynamic mechanism simplifies the user actions required for needle deployment and fluid transfer while maintaining the closed-system safety throughout the process.
4Reliability
If multiple components are used in CSTDs to ensure sealed transfer, then safety is improved, but the number of user actions increases
Solution Approach 1:
The sealing mechanism is pre-positioned within the body, and the movable portion is pre-configured with the needle assembly. When the user activates the device, these pre-positioned components work together in a single coordinated motion to achieve both sealing and fluid transfer, eliminating the need for multiple separate user actions.
Solution Approach 2:
The device merges the sealing function and fluid transfer function into a single integrated operation. The movable portion simultaneously performs needle deployment, fluid connection, and sealing actions that would traditionally require multiple separate steps, thereby reducing the number of user actions required.
Data Source
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AI summary
A fluid transfer device (10) includes a first portion (12) having a closed end (18) and an open end (20). The first portion (12) includes a first connector (22) configured to be connected to a first container (26) and including a cannula (24). The fluid transfer device (10) includes a second portion (14) having a closed end (30) and an open end (28). The open end (20) of the first portion (12) extends at least partially into the open end (28) of the second portion (14). The second portion (14) includes a second connector (32) configured to be connected to a second container (36) and a third connector (34) spaced apart from the second connector (32). At least a portion of the first portion (12) is axially and rotationally movable with respect to at least a portion of the second portion (14) from a first position in which the first connector (22) is aligned with the second connector (32) to a second position in which the first connector (22) is aligned with the third connector (34).