Syringe Needle Tube Housing with Pivot and Vial Docking
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Solution Overview
Problem
Existing needle tube devices for syringes do not effectively protect against needle sticks after use and lack a secure mechanism for connecting and tapping vial containers during injection processes.
Innovation Solution
A device with a pivotally designed housing on a carrier element that securely docks vial containers and allows controlled piercing of the container wall by the needle tube through a rotating or pivoting movement, facilitated by a slide guide mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the housing is made pivotable on the carrier element to allow needle protection after use, then needle safety is improved, but the device complexity increases
Solution Approach 1:
The housing is designed to be pivotable relative to the carrier element, transforming from a static protective structure to a dynamic one that can open and close. This allows the housing to adapt between two states: open for needle access during injection, and closed for needle protection after use, thereby reducing needle stick risk while maintaining manageable structural complexity through controlled movement rather than complete redesign
2Reliability
If the carrier element is designed to securely dock vial containers, then docking safety is improved, but the device complexity increases
Solution Approach 1:
The carrier element incorporates a receptacle with a guide structure that preliminarily positions the vial container's extraction area before final docking. The guide ensures proper alignment and insertion depth, so that when the vial is fully inserted, the needle tube is already correctly positioned to pierce the container wall. This preliminary guidance action secures reliable docking without requiring complex locking mechanisms or adjustment devices
3Reliability
If the needle tube is positioned to automatically pierce the container wall during pivoting movement, then tapping reliability is improved, but the risk of accidental piercing increases
Solution Approach 1:
The guide structure in the receptacle preliminarily prevents accidental piercing by constraining the vial container's insertion path and depth. The guide ensures the container is properly positioned and secured before the needle tube can reach a position where piercing could occur. This preliminary preventive action allows the subsequent pivoting movement to reliably pierce the container wall when intended, while blocking unintended piercing paths through mechanical guidance and limitation
Data Source
AI summary
A device for the needle tube of a syringe includes a housing which can pivot on a carrier element for the needle tube and which has an open housing side in the pivoting plane of the housing such that the needle tube can be swung into the housing in order to be held there after being used for injection. The arrangement of the rear free end of the needle tube in the carrier element enables controlled piercing of the all of a container that is replaceable in the carrier element.