Nasogastric Tube With Ear Hook and Gastric Balloon Retention
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Solution Overview
Problem
Existing nasogastric tubes are prone to premature removal due to inadequate securing methods, particularly for patients emerging from sedation and unaware of their actions.
Innovation Solution
A nasogastric tube with a hook for ear attachment and an inflatable balloon for stomach retention, allowing secure placement and easy removal when needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the NG tube is held in place by tape only, then the device structure remains simple, but the tube can be prematurely removed by patients
Solution Approach 1:
The securing mechanism is divided into two independent components: a hook for ear attachment and an inflatable balloon for gastric retention. This segmentation allows each component to perform its specific function effectively while maintaining overall system reliability.
Solution Approach 2:
The hook is designed with a channel through which the NG tube passes, creating a nested structure where the tube is surrounded and secured by the hook. This nested configuration provides robust retention without requiring complex external fastening mechanisms.
2Reliability
If the tube is securely attached to prevent removal, then patient safety improves, but ease of removal when needed decreases
Solution Approach 1:
The balloon transitions from an inflated state (providing secure retention) to a deflated state (allowing easy removal). This dynamic state change enables the system to adapt between requiring strong retention and requiring easy removal, resolving the contradiction between these two requirements.
Solution Approach 2:
The inflatable balloon acts as an intermediary mechanism between the tube and the patient's stomach. By controlling the balloon's inflation and deflation, the system mediates between the need for secure attachment and the need for easy removal, allowing controlled transitions between these states.
3Stability of the object's composition
If retainers are added to prevent premature removal, then tube stability improves, but device complexity increases
Solution Approach 1:
The hook serves multiple functions: it secures the external portion of the tube to the patient's ear and provides a structure through which the tube can pass for additional stabilization. The inflatable balloon similarly provides both retention and positioning functions, reducing the need for separate stabilization components.
Solution Approach 2:
The inflatable balloon utilizes a flexible thin-walled structure that can be inflated to provide retention forces. This flexible shell approach provides effective stabilization without requiring rigid or complex mechanical structures, thereby limiting the increase in device complexity.
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 design effectively prevents premature removal by securing the tube to the patient's ear and stomach, ensuring stability during use while facilitating easy detachment when required.
Implementation Method 1
the inflatable balloon is inflated to hold the second end within the patient's stomach
Data Source
AI summary
The nasogastric tube with retainers includes a nasogastric tube, a hook, an inflatable balloon and an inflation tube. The nasogastric tube has opposed first and second open ends, and the hook is secured to the nasogastric tube adjacent the first end thereof. The hook is adapted for releasable attachment to the patient's ear. The inflatable balloon is secured to the nasogastric tube adjacent the second end thereof such that, following insertion, the second end of the nasogastric tube and the inflatable balloon are positioned in the patient's stomach. The inflation tube is secured to the nasogastric tube and extends parallel thereto. The inflation tube has opposed first and second ends, with the second end thereof being in open fluid communication with an interior of the inflatable balloon.