Retrofittable Insufflation Module for Laryngoscope Handles
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Solution Overview
Problem
Existing laryngoscopes require additional components such as oxygen supply tubes or suction catheters to be introduced into the oral cavity for ventilation and suction, which can complicate procedures, especially in infants and neonates, and do not provide efficient insufflation functionality.
Innovation Solution
A retrofittable insufflation module with a jet nozzle and gas duct design that delivers a high-velocity gas stream along the laryngoscope blade, securely attachable to the laryngoscope handle, allowing for efficient insufflation without the need for additional oral cavity introductions, and optionally includes a module-coupling mechanism for additional modules like a magnifying lens or auxiliary tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional components such as oxygen supply tubes or suction catheters are introduced into the oral cavity for ventilation and suction, then ventilation and suction functions can be provided, but the procedure becomes more complex and time-consuming
Solution Approach 1:
The patent combines multiple functions (insufflation/ventilation and suction) into a single integrated laryngoscope device. The insufflation module integrates a gas delivery system with the laryngoscope blade, eliminating the need for separate oxygen supply tubes. The suction capability is integrated into the same device, allowing both functions to be performed through one instrument rather than multiple separate components.
Solution Approach 2:
The laryngoscope is designed with multi-functionality, serving as both an intubation tool and an insufflation/ventilation device. The single device can perform intubation, provide positive pressure ventilation through the integrated insufflation module, and facilitate suction, replacing the need for multiple specialized instruments and reducing procedural steps.
2Reliability
If additional components such as oxygen supply tubes are securely mounted to the laryngoscope handle, then stable gas delivery is achieved, but the components are not readily removable and reduce device adaptability
Solution Approach 1:
The insufflation module employs a dynamic coupling system that allows the device to transition between fixed and removable states. The module can be securely attached to the laryngoscope handle during use to ensure stable gas delivery, yet can be easily removed when not needed, allowing the laryngoscope to function in its standard configuration without permanent modifications.
3Productivity
If tubing is introduced into the oral cavity to deliver oxygen during laryngoscopy, then oxygen delivery is achieved, but the procedure is complicated and time-consuming
Solution Approach 1:
The insufflation module is pre-integrated with the laryngoscope blade, with the gas delivery pathway already established along the blade's length. This preliminary configuration eliminates the need to separately introduce and position oxygen tubing during the procedure. The gas delivery system is prepared in advance as part of the integrated device, allowing immediate oxygen delivery upon activation without additional procedural steps.
4Productivity
If a high-velocity gas stream is delivered through a gas duct with a neck portion and throat portion, then insufflation efficiency is improved, but the device complexity increases
Solution Approach 1:
The gas duct is designed using pneumatic principles, with a neck portion that has a decreasing cross-section tapering toward the throat portion. This configuration creates a venturi effect that accelerates the gas flow, producing a high-velocity jet stream capable of effective insufflation. The pneumatic design leverages pressure differential and flow dynamics to achieve efficient gas delivery through a relatively simple tubular structure.
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 insufflation module enhances ventilation efficiency, reduces the risk of hypoxia during prolonged intubation, and improves visibility by minimizing vapor content, particularly during video laryngoscopy, while allowing for secure and easy attachment to existing laryngoscope handles.
Implementation Method 1
The neck portion has a decreasing cross section tapering towards the throat portion such that when a pressurized gas stream is introduced via the gas inlet the flow-rate of the gas stream increases as the gas stream flows through the duct
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
A laryngoscope handle has a lower grip and an upper functional portion comprising a blade-retention portion formed with a slot extending in a longitudinal direction parallel to a viewing axis, and being configured for slidingly receiving therewithin a laryngoscope blade, and a module-coupling mechanism. An insufflation module may include a body; a jet nozzle extending from the body, the jet nozzle configured and operable to deliver a high velocity stream of gas in a direction substantially along a blade of the laryngoscope such that the gas is deliverable into an intraoral cavity.