Closed-Chamber Syringe Adapter for Contamination-Free Syringe Changes
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Solution Overview
Problem
Traditional syringe adapters expose the syringe to the atmosphere during fluid transfer, creating an open system when changing syringes, which can lead to contamination and inefficiencies.
Innovation Solution
A syringe adapter that provides a closed system by incorporating a chamber and fluid paths to allow filtered air into the syringe without exposing it to the environment, maintaining a sealed connection during syringe changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional open female Luer with a protruding cannula is used to allow air entry during fluid transfer, then air can enter the syringe to replace pulled fluid, but the female Luer becomes exposed to the atmosphere during syringe changes, creating an open system that risks contamination
Solution Approach 1:
The adapter body serves as an intermediary component between the syringe and the environment. It incorporates a closed chamber that receives and filters air before it enters the syringe, while the male connector maintains a sealed connection to the IV set. This mediator structure allows air entry functionality while preventing direct atmospheric exposure and contamination.
Solution Approach 2:
The invention extracts the air entry function from the traditional open female Luer design and relocates it to a dedicated closed chamber within the adapter body. The cannula is repositioned to extend into the chamber rather than protruding beyond the connector, separating the air intake function from the fluid connection interface and enabling a closed system architecture.
2Reliability
If the cannula protrudes past the female Luer to provide an air path, then air can enter through the filter, but the system remains open to the atmosphere when the syringe is removed
Solution Approach 1:
The adapter is segmented into distinct functional zones: a male connector portion for sealed IV set connection, a closed chamber for air intake and filtration, and a female connector for syringe attachment. The cannula is segmented to extend only into the chamber rather than beyond the connector, creating separate functional pathways that maintain system closure while enabling air filtration.
3Object-affected harmful factors
If a closed system is implemented to prevent contamination during syringe changes, then contamination risk is reduced, but air must be introduced into the syringe without exposing it to the atmosphere
Solution Approach 1:
The adapter merges multiple functions into a single integrated component: the closed chamber serves both as the air intake pathway and as part of the sealed connection system. The male connector and female connector are merged into one adapter body that maintains closed system integrity while providing both fluid transfer and air introduction capabilities through unified结构设计.
Data Source
AI summary
Syringe adapters are provided that include a female connector, a body in fluid communication with the female connector, a male connector in fluid communication with the female connector and the body, the male connector configured to couple with a medical device, a chamber fluidly coupled to and extending outward from the body, wherein a fluid path is formed through the female connector and the body and into the chamber, and wherein a closed system is provided when the syringe is uncoupled from the syringe adapter. Methods of using syringe adapters and fluid delivery systems having syringe adapters are also provided.