Tapered Syringe Retaining Members for Automatic Injector Alignment
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Solution Overview
Problem
Existing syringe and fluid injector connection interfaces require manual rotational alignment and effort for loading and removal, increasing procedure time and complexity.
Innovation Solution
A self-orienting syringe design with radially protruding retaining members that axially taper towards the proximal end, allowing for automatic alignment and easy engagement/disengagement with a fluid injector without rotational manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual rotational alignment is required for syringe engagement, then connection reliability is improved, but operation time and complexity increase
Solution Approach 1:
The syringe retaining member with axial taper automatically orients itself during insertion into the locking mechanism, eliminating the need for manual rotational alignment. The tapered geometry guides the syringe into the correct angular position as it is pushed in, making the system self-aligning and self-servicing.
Solution Approach 2:
The retaining member employs an axial taper (changing geometric parameter) that transforms the engagement process: as the syringe is inserted axially, the taper converts this linear motion into rotational alignment, automatically positioning the syringe at the correct angle without manual intervention.
2Strength
If manual rotation is required for syringe engagement, then connection strength is improved, but ease of operation deteriorates
Solution Approach 1:
The system performs its own alignment function through the tapered retaining member geometry, which automatically orients the syringe correctly during insertion without requiring the operator to manually rotate or align components.
Solution Approach 2:
Instead of requiring the operator to rotate the syringe to achieve alignment, the design inverts the approach: the taper passively converts axial insertion motion into automatic angular alignment, making the alignment happen in reverse of the traditional manual rotation method.
3Reliability
If complex alignment procedures are used, then engagement reliability is improved, but device complexity increases
Solution Approach 1:
The axial taper on the retaining member changes the geometric parameters of the engagement interface, allowing a single continuous axial motion to simultaneously achieve both positioning and alignment, thereby simplifying the interface while maintaining reliable engagement.
Solution Approach 2:
The tapered retaining member performs multiple functions simultaneously: it guides axial insertion, automatically provides rotational alignment, and ensures proper engagement orientation, consolidating what would otherwise require separate alignment steps into a single universal engagement action.
Data Source
AI summary
A syringe retaining element protruding radially outward relative to an outer surface of a sidewall of a barrel of a syringe is described. The syringe retaining element is configured for interacting with a locking mechanism of a syringe port of a fluid injector to releasably retain the ring. Features of the syringe retaining element allow the syringe to be axially ejected from the syringe port upon rotation of the syringe. Other features of the syringe retaining element allow the syringe to engage the locking mechanism of the syringe port and rotationally guide the syringe into self-orienting alignment with the locking mechanism.