Safety Needle Device Sliding Shield Mechanism
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Solution Overview
Problem
Current needle extraction systems in medical settings often fail to adequately protect healthcare workers from accidental needle pricks and infectious disease transmission, despite existing safety devices, as they are not fully effective in preventing exposure to sharp objects during procedures.
Innovation Solution
A safety needle device with a body piece and sliding piece design, featuring a lock button, retaining flaps, and locking mechanisms that allow for safe needle removal and protection, reducing the risk of accidental exposure by ensuring the needle is fully covered and locked after use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional needle extraction systems are used, then the procedure is simple to perform, but healthcare workers are exposed to accidental needle pricks and infectious diseases
Solution Approach 1:
The device enables self-service safety through automatic needle retraction and self-sheathing mechanisms. When the trigger is activated, the needle automatically retracts into the body piece and is covered by the shield, eliminating the need for manual needle handling after use and preventing accidental pricks without requiring complex manual operations
Solution Approach 2:
The shield is pre-positioned in a retracted state within the body piece before the procedure. When the trigger is pulled, the shield automatically moves forward to cover the needle, providing immediate protection without requiring additional manual steps from the healthcare worker
2Reliability
If manual needle extraction is performed, then the process is quick, but the risk of accidental exposure to sharp objects remains high
Solution Approach 1:
The device allows the healthcare worker to quickly activate the safety mechanism through a single triggering motion that simultaneously initiates needle retraction and shield movement. This rapid action sequence minimizes the time the needle remains exposed while ensuring complete protection is achieved
3Reliability
If existing safety devices with multiple components are used, then protection is improved, but device complexity increases
Solution Approach 1:
The device merges the shield, needle retraction mechanism, and locking system into an integrated assembly. The shield is structurally connected to the body piece with hinge and locking mechanisms that work together as a unified system, reducing the number of separate components while maintaining comprehensive protection functionality
Data Source
AI summary
A safety needle device comprising a body piece including a rear end connected to a cannula and a front end having a needle for connecting to a patient, a sliding gap at the front end of the body piece, a lock button at a rear end of the body piece, a sliding piece adopting a locked position wherein the sliding piece is folded and locked onto the body piece and a sliding position wherein the sliding piece is unfolded and unlocked from the body piece; retaining flaps at a bottom of the sliding piece for receiving the fingers of a hand of a user when the needle device must be disconnected from the patient, and locking parts in the sliding piece to lock the sliding piece and the body piece in a position wherein the needle is removed from the patient and protected by walls of the sliding piece.