Needleless Connector With Integrated Backflow Check Valve
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Solution Overview
Problem
Current needleless access devices and backflow check valves in medical connectors do not efficiently manage fluid flow and backflow prevention, particularly in configurations with multiple ports, which can lead to complications in intravenous fluid administration and patient safety.
Innovation Solution
A connector design incorporating a needleless access device and a backflow check valve with movable valve elements that allow fluid transfer between ports, enabling secure injection and withdrawal of fluids while preventing backflow, utilizing a housing with specific port configurations and valve mechanisms to control fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a needleless access device with a valve is used to eliminate repeated needle sticks, then patient safety and healthcare worker protection are improved, but the risk of fluid backflow and contamination increases
Solution Approach 1:
The patent combines a needleless access device with a backflow check valve into a single integrated connector assembly. The valve mechanism is built into the needleless connector housing, creating a unified device that provides both needleless access functionality and backflow prevention in one component, thereby eliminating the harmful backflow effect while maintaining patient safety benefits
Solution Approach 2:
The backflow check valve acts as an intermediary mechanism between the needleless access device and the fluid line. It mediates the fluid flow by allowing forward flow while blocking backward flow, preventing contamination from returning to the patient or intravenous solution without interfering with the needleless access function
2Reliability
If a backflow check valve is positioned in the first inlet port of a Y-connector, then fluid flow from intravenous bag to patient is controlled, but the complexity of the connector increases
Solution Approach 1:
The needleless connector is designed to serve multiple functions: it provides needleless access for fluid injection/withdrawal, acts as a backflow check valve, and functions as a Y-connector with multiple ports. By making the connector universal and multi-functional, the design reduces the need for separate components, thereby managing complexity while maintaining reliable fluid flow control
Solution Approach 2:
The patent merges the backflow check valve mechanism directly into the Y-connector structure. The valve is integrated into the connector housing rather than being a separate component, which simplifies the overall assembly and reduces the number of parts while maintaining the fluid flow control function
3Adaptability or versatility
If multiple ports are provided in the connector for various fluid access needs, then versatility and ease of operation are improved, but the risk of incorrect fluid flow and backflow increases
Solution Approach 1:
Each port in the multi-port connector is equipped with its own localized backflow prevention mechanism or is positioned within the flow control architecture such that backflow prevention is addressed at each access point. This local quality approach ensures that versatility is maintained while preventing incorrect fluid flow and backflow at each individual port
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
The connector ensures safe and efficient fluid transfer by preventing backflow and allowing controlled access, reducing the risk of complications and improving patient safety during intravenous procedures.
Implementation Method 1
A first valve element may be positioned in the first port... A first fluid may flow between the first port and the third port
Implementation Method 2
A second valve element may be positioned in the second port... A second fluid may be introduced into the connector via the second port
Data Source
AI summary
A connector comprising a needless access device and a backflow check valve for transferring fluids and method therefor. The connector may have a first port, a second port, and a third port. A first valve element may be positioned within the first port and a second valve element may be positioned within the second port. The first valve element may be in a first position as a first fluid flows between the first and third ports. The second port may be used to introduce a second fluid into the connector. Upon introduction of the second fluid to the connector, the first valve element may move from the first position to a second position. In the second position, fluid may be prevented from flowing past the first valve element.