Luer Connector Lever Mechanism for Single-Handed IV Disconnection
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Solution Overview
Problem
Conventional Luer Lock connectors require two-handed operation for disconnection, leading to potential contamination and venous damage during IV therapy, as well as unnecessary steps and risk of fluid leakage when replacing IV lines.
Innovation Solution
A fluid transfer connector with a moveable member that integrates a Luer connector part and flexible tubing, allowing for single-handed disconnection and fluid flow control by interrupting or releasing the friction fitting, thereby reducing the need for separate clamping devices and minimizing exposure to contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional Luer Lock connectors are used, then fluid transfer connection is achieved, but two-handed operation is required for disconnection
Solution Approach 1:
The patent combines the disconnecting lever mechanism with the Luer connector housing into a single integrated unit. The lever is pivotally mounted within the connector body and works in conjunction with the tapered friction fitting, eliminating the need for separate disconnection tools or devices while enabling one-handed operation.
Solution Approach 2:
The patent introduces a movable lever that can pivot between locked and unlocked positions. This dynamic element allows the user to easily transition from a secure connected state to a disconnected state with a simple lever motion, making the disconnection process as easy as connection while maintaining structural integrity during use.
2Object-affected harmful factors
If two-handed operation is used for disconnection, then secure connection is maintained, but risk of contamination and venous damage increases
Solution Approach 1:
The patent combines the disconnecting lever mechanism with the Luer connector housing into a single integrated unit. The lever is pivotally mounted within the connector body and works in conjunction with the tapered friction fitting, eliminating the need for separate disconnection tools or devices while enabling one-handed operation.
Solution Approach 2:
The lever mechanism is designed to automatically prepare the connection for disconnection by engaging with the hub structure. When the lever is actuated, it preliminarily loosens the friction fit and positions the hub for easy removal, reducing the time hands are exposed to potential contamination sources.
3Productivity
If separate clamping devices are used for IV line replacement, then fluid flow control is achieved, but unnecessary steps and leakage risk increase
Solution Approach 1:
The patent merges the clamping function with the connector body by incorporating a clamp that can be integrated into the connector housing. This allows the connector to simultaneously perform connection, clamping, and controlled disconnection functions, eliminating the need for separate clamping devices and reducing the steps required for IV line replacement.
Solution Approach 2:
The connector is designed to perform multiple functions: it provides fluid transfer connection through the Luer interface, controls fluid flow through integrated clamping mechanisms, and enables safe disconnection through the lever system. This multi-functionality consolidates what would traditionally require multiple separate devices into a single unit.
4Object-affected harmful factors
If twisting motion is used to disconnect Luer connection, then connection is released, but female Luer connector hub may become exposed and contaminated
Solution Approach 1:
The lever mechanism is designed to automatically prepare the connection for disconnection by engaging with the hub structure. When the lever is actuated, it preliminarily loosens the friction fit and positions the hub for easy removal, reducing the time hands are exposed to potential contamination sources.
Solution Approach 2:
Instead of using a twisting motion that rotates the connector and potentially exposes the female hub, the patent uses a lever that pushes along the tapered surface to directly separate the male and female components. This inverted approach to disconnection avoids the rotational motion that causes contamination risk.
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 single-handed disconnection of Luer parts, reduces the risk of contamination, and prevents fluid leakage during IV line replacement by integrating fluid flow control within the connector, enhancing safety and efficiency in medical settings.
Implementation Method 1
a Luer connector part comprising a fluid transfer port having a tapered surface to form a friction fitting with a corresponding Luer part
Data Source
AI summary
A fluid transfer connector comprises a medical standard connector part comprising a fluid transfer port, a connector part for flexible tubing, the connector part arranged to form a fluid connection with the fluid transfer port such that, in use, a fluid flow can pass between flexible tubing connected to the connector part and the fluid transfer port. The connector further comprises a moveable member arranged to interrupt the fluid flow in the flexible tubing when moved from a first position to a second position. The moveable member is further arranged to release a connection, in use, between the medical standard connector part and a corresponding adaptor part such as a female hub).