Endcap with Color Indicator for Liquid Medicine Tube Priming
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Solution Overview
Problem
Current endcaps for liquid medicine-injecting tubes rely on medical staff experience to determine if priming is complete, leading to unnecessary liquid medicine loss, as the process depends on experience and is not easily visually verified.
Innovation Solution
An endcap with a filter member to remove air and an indicator that changes color upon contact with the liquid medicine, allowing for quick visual confirmation of priming completion, and optionally includes a check valve to prevent backflow and a liquid-absorbing member to manage liquid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the endcap uses a filter member to remove air during priming, then air removal effectiveness is improved, but the determination of priming completion still depends on medical staff experience and causes unnecessary liquid medicine loss
Solution Approach 1:
The patent applies color change indicators that change color when exposed to liquid medicine, providing visual feedback to indicate priming completion. This allows medical staff to quickly determine when priming is complete without relying on experience or draining excessive liquid, thus reducing liquid medicine loss while maintaining reliable air removal through the filter member
2Device complexity
If the endcap includes only a filter member for air removal, then the device structure is simple, but it cannot provide visual confirmation of priming completion
Solution Approach 1:
The patent incorporates color change indicators into the endcap structure. These indicators change color when contacted by liquid medicine, providing immediate visual confirmation of priming completion. The addition of these indicators maintains relatively simple device structure while significantly improving the detectability of priming status
3Productivity
If the endcap allows liquid medicine to flow freely during priming, then the priming process is fast, but backflow of liquid medicine can occur after indicator color change
Solution Approach 1:
The patent incorporates a check valve that prevents backflow of liquid medicine. This valve allows liquid to flow during priming but automatically closes to prevent backflow after the indicator color changes, thus maintaining fast priming speed while eliminating the harmful backflow effect
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables medical staff to easily and quickly determine priming completion with a color change, reducing unnecessary liquid medicine loss and preventing backflow, thus ensuring safer and more efficient injection processes.
Implementation Method 1
an indicator that changes color upon contact with the liquid medicine
Implementation Method 2
a filter member to remove air
Implementation Method 3
a check valve to prevent backflow
Data Source
AI summary
The present invention enables the completion of preparation of liquid medicine injection to be easily and quickly checked with the naked eye based on a color change in an endcap for a liquid medicine-injecting tube. As long as a medical staff checks a color change in the endcap with the naked eye, the medical staff can immediately perform an operation of connecting the tube to a catheter (or injection needle) or the like after removal of the endcap without unnecessarily draining off a large amount of the liquid medicine.