Vascular Access Device Gas Permeable Venting
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Solution Overview
Problem
Current vascular access devices for infusion therapy are inefficient, requiring numerous steps and exposing the fluid path to contamination during the insertion process, leading to potential user error and blood exposure.
Innovation Solution
A vascular access device with a gas permeable vent system that includes a removable vent plug and a ventable end cap, which seals to maintain a closed system, allowing for efficient venting and flashback visualization without exposing the operator to blood, and can be easily integrated into existing catheter systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a vent plug is removed to allow air escape during blood flashback, then air venting is achieved, but the system becomes exposed to contamination and blood exposure risk
Solution Approach 1:
The patent employs a porous hydrophobic membrane in the vent plug that allows air to pass through while blocking blood and other fluids. This enables the vent plug to remain in place during air venting operations, maintaining system closure and preventing contamination while still achieving the necessary air escape function.
Solution Approach 2:
The vent plug acts as an intermediary element between the closed system and the external environment. It provides a controlled interface that selectively permits air passage while blocking contaminants, allowing the system to vent air without fully opening to the environment and thus maintaining protection against blood exposure and contamination.
2Reliability
If multiple steps are taken to ensure closed system protection during insertion, then safety is improved, but the insertion process becomes more complex and time-consuming
Solution Approach 1:
The vent plug is pre-installed in the vent port before catheter insertion begins. This preliminary positioning ensures that air venting capability is immediately available while maintaining system closure, eliminating the need for additional steps to install or activate venting mechanisms during the insertion procedure.
Solution Approach 2:
The vent plug serves multiple functions simultaneously: it allows air to escape during flashback, prevents blood leakage, maintains system closure, and can be easily removed or accessed when needed. This multi-functionality consolidates several protective and operational requirements into a single component, simplifying the overall procedure.
3Ease of operation
If the vent plug is removed and replaced with another vascular access device, then the fluid path is opened for connection, but contamination risk and fluid loss increase
Solution Approach 1:
The vent plug serves as a temporary intermediary that maintains system closure while allowing air venting. When another vascular access device needs to be connected, the vent plug can be easily removed or accessed, and the system remains protected until that moment, minimizing unnecessary openings and reducing fluid loss and contamination risk.
Solution Approach 2:
The vent plug is designed as a disposable or single-use component that is discarded after its primary function of air venting during insertion is complete. This eliminates the need to sterilize or complexly manage the venting mechanism for subsequent use, and ensures a fresh, sterile barrier is in place whenever the vent plug is removed or replaced.
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 solution simplifies the insertion process, reduces the risk of contamination, and maintains a closed system, minimizing blood exposure and fluid loss while ensuring proper placement and efficient fluid administration.
Implementation Method 1
The vent includes a gas permeable vent that allows air to escape the device while preventing blood leakage
Implementation Method 2
a venting material such as a hydrophobic filter
Data Source
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AI summary
A vascular access device may form part of an extravascular system and function as an adapter including a gas permeable vent. A method of venting a medical device may include providing a vascular access device as part of an extravascular system, providing a gas permeable vent within the vascular access device, venting gas from the system through the vent, and closing the vent.