Fluid Transfer Device Spring Sealing Mechanism
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Solution Overview
Problem
Existing fluid transfer devices in the medical sector face challenges with safety, ease of use, and manufacturing complexity, particularly when handling various vessels and connectors, often resulting in spillage and unintentional exposure of hazardous medicaments.
Innovation Solution
A fluid transfer device with a spring member made of elastic material that surrounds the piercing member, providing a flexible and secure mechanism for fluid transfer, featuring a one-piece structure with a bellow configuration for easy activation and deactivation, and double locking mechanism to prevent leakage and accidental exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a telescopic structure with multiple sliding and rotatable components is used, then the device can provide safer handling and administration of drugs, but the device complexity and production costs increase
Solution Approach 1:
The invention extracts and eliminates the complex telescopic structure, sliding components, and rotatable parts from the device. Instead, it uses a simple push-activation mechanism where the distal end is simply pushed distally to activate the piercing member, removing unnecessary structural complexity while maintaining safety functionality
Solution Approach 2:
Instead of using a complex multi-directional activation mechanism (sliding + rotating), the invention inverts the approach by using a simple single-direction push activation that achieves the same safety outcome through a fundamentally simpler mechanical action
2Reliability
If multiple activation movements (longitudinal and radial) are required, then the device can provide safer handling, but the ease of operation decreases
Solution Approach 1:
The invention removes the requirement for multiple activation movements (radial rotation + longitudinal sliding). Instead, it extracts only the essential longitudinal push movement needed to activate the piercing member, making the operation as simple as pushing the distal end forward
Solution Approach 2:
The activation process is segmented into a single simple motion (distal push) rather than requiring multiple sequential motions (rotation then sliding), reducing the operational steps and improving ease of use while maintaining safety
3Reliability
If a complex telescopic structure is used, then the device can provide safer handling, but the manufacturing complexity increases
Solution Approach 1:
The invention extracts and eliminates all complex telescopic components, sliding mechanisms, and rotatable parts from the manufacturing requirements. The device is manufactured as a simpler integrated structure with a piercing member that activates through a single push motion, significantly reducing manufacturing complexity
Solution Approach 2:
The invention merges multiple previously separate components (telescopic sections, sliding parts, rotating elements) into a single integrated structure, simplifying the manufacturing process while maintaining the safety functionality through the unified design
4Adaptability or versatility
If the piercing member is exposed outside in inactivated position, then the device can be used with various vessels, but safety concerns arise from unintentional exposure
Solution Approach 1:
The invention applies preliminary action by pre-positioning the piercing member in a retracted state within the device body before use. The piercing member is prepared and ready but kept safely enclosed until the moment of activation, preventing unintentional exposure while maintaining versatility for use with various vessels and connectors
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 device ensures safe and efficient transfer of medicaments with reduced complexity in manufacturing and use, providing a perfectly sealed arrangement that prevents spillage and accidental exposure of the piercing member, even in malfunction scenarios.
Implementation Method 1
a spring member (11) made of an elastic material extending from the proximal end (8) longitudinally through the distal end (D) in a manner surrounding the piercing member (3)
Data Source
Figure 1
Figure 2
Figure 3a
AI summary
The present invention relates to a fluid transfer device (1) comprising an outer casing (6), a proximal end (8), a piercing member (3), a pierceable seal (4) arranged against said piercing member (3) and a distal end (D) with a number of locking members (5). The device (1) further comprises a spring member (11) made of an elastic material extending from the proximal end (8) longitudinally through the distal end (D) in a manner surrounding the piercing member (3) in fluid tight fashion and forming an inner through channel (23) therein. Said spring member (11) comprises an upper portion (12), a sealing portion (13), and a number of locking members (14) in close proximity to the said distal end (D), that are integrally molded as a one piece unit.