Medical Fluid Bag Piercing Device with Retention Hooks
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Solution Overview
Problem
Existing piercing devices for medical fluid bags are prone to accidental separation from the bag during transport and administration, leading to drug leaks and contamination risks, and they often result in incomplete emptying of the bag, causing waste and economic losses.
Innovation Solution
A piercing device with a tubular body, flange-like body, and retention hooks that securely attach to the bag's access element, ensuring stable connection and complete emptying by preventing accidental detachment and allowing safe access for infusion or administration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If piercing devices are used to access medical fluid bags, then drug administration is enabled, but accidental separation from the bag occurs leading to leaks and contamination
Solution Approach 1:
The piercing device is divided into distinct functional segments: a piercing tip for initial access, a retention mechanism with hooks for secure attachment, and a tubular body for fluid flow. This segmentation allows each component to perform its specific function optimally while working together to prevent accidental separation.
Solution Approach 2:
The retention mechanism acts as an intermediary between the piercing device and the bag access element. The hooks engage with the access element to provide a secure intermediate connection that prevents direct separation while allowing controlled access to the medical fluid.
2Reliability
If piercing tips of considerable length are used, then safe access is provided, but complete emptying of the bag is prevented causing drug waste
Solution Approach 1:
The piercing tip length is optimized to a specific parameter range that balances safe access requirements with complete emptying capability. The tip is long enough to provide safe access through the bag wall but short enough to allow the fluid level to drop completely without being blocked by the tip structure.
3Reliability
If retention means are added to prevent separation, then connection stability improves, but device complexity increases
Solution Approach 1:
The retention hooks are merged with the tubular body structure, forming an integrated retention means that prevents separation without requiring additional separate components. This merging maintains connection stability while minimizing device complexity.
Solution Approach 2:
The retention mechanism serves multiple functions: it prevents accidental separation, maintains secure attachment during transport and administration, and allows for controlled disconnection when needed. This multi-functionality reduces the need for additional specialized components.
Data Source
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AI summary
A piercing device (1), particularly for bags (5) for containing physiological fluids for medical use and the like, comprising at least one substantially tubular and internally hollow body (2) that is open at its ends (3, 4), the tubular body (2) being insertable along a mating direction (D), in the direction of approach toward a containment bag (5), in at least one access element of the containment bag (5); at least one tip (7) for piercing the access element (6) associated with a first one (3) of the ends; the second one (4) of the ends, which lies opposite the first end (3), is associable with a device (1) for the infusion or administration of the physiological fluid contained in the containment bag (5) and/or with means for temporary closure of the second end (4). The device (1) comprises means (8) for the removable retention, along the mating direction (D), of the tubular body (2) to at least one between the containment bag (5) and/or the access element (6), in the direction for mutual spacing (D).