Safety Needle Assembly for Fluid Collection Devices
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Solution Overview
Problem
Existing blood collection devices pose risks due to permanently extended needles and open back ends, leading to accidental needle sticks and difficulties in safe disposal, as they remain hazardous until destroyed.
Innovation Solution
A fluid collection/injection device with a double-ended needle system featuring a safety cover that transitions from an operational mode to a post-use mode, allowing for safe needle release and preventing re-use by unlocking the connection between the needle and the hub securing section, ensuring the needle falls out for safe disposal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a permanently extended needle is used in a blood collection device, then the device can maintain needle readiness for use, but the device creates ongoing safety risks and disposal difficulties due to exposed needles
Solution Approach 1:
The device separates the needle from the hub by using a detachable connection mechanism. The needle can be removed from the hub after use by actuating a release mechanism, allowing the needle to be disposed of separately while the hub remains. This segmentation eliminates the safety hazard of permanently extended needles while maintaining operational readiness when needed.
Solution Approach 2:
The device transitions from a static permanently-extended needle configuration to a dynamic system where the needle can be retained during use and then released for disposal. The release mechanism allows the needle to move from a secured state to a removable state, changing the device's configuration based on operational needs.
2Ease of operation
If the back end of the collection device remains open after tube removal, then the device allows easy access for tube insertion, but the open back end exposes the needle and creates disposal hazards
Solution Approach 1:
The device maintains an open back end for easy tube insertion during operation, but the release mechanism is pre-configured to allow rapid closure or needle detachment after use. The system is prepared in advance to transition from an open accessible state to a closed secure state, eliminating the hazard of exposed needles while preserving operational access.
3Object-affected harmful factors
If a quick release needle system is implemented, then the device can improve safety by allowing needle removal, but the device complexity increases due to additional release mechanisms
Solution Approach 1:
The release mechanism is designed to be self-actuating or easily actuated by the user without requiring complex operations. The mechanism automatically or simply releases the needle from the hub when triggered, eliminating the need for complex multi-step release procedures while maintaining safety.
Solution Approach 2:
The release mechanism extracts only the essential function needed for needle removal, eliminating unnecessary complexity. The mechanism focuses solely on the critical action of detaching the needle from the hub, using a simple trigger-based system rather than complex locking and unlocking sequences.
4Stability of the object's composition
If the needle is securely retained in the hub during use, then the device maintains operational stability, but the needle becomes difficult to remove for safe disposal
Solution Approach 1:
The needle-hub connection transitions from a secure retained state during use to a easily removable state after use. The release mechanism changes the connection properties dynamically, allowing strong retention when needed and easy removal when the release trigger is actuated, eliminating the trade-off between stability and removability.
Data Source
AI summary
Fluid collection/injection device comprises a body having a front end, a back end, and a main hollow section arranged between the front and back ends and a needle hub securing section arranged on the front end and being structured and arranged to receive therein a needle member. The fluid collection/injection device is structured and arranged to utilize at least an operational mode, an operational mode, and a post-use mode. In the installation mode, the needle member is coupled to the body via the needle hub securing section. In the operational mode, fluid passes through the needle member and into or out of a receptacle inserted into the main hollow section.