Adjustable Resuscitation Device Bellows Volume Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current resuscitation devices struggle to deliver consistent and appropriate tidal volumes to patients, as they rely on manual compression, which can lead to over-inflation and lung injury, especially in emergency situations where accurate volume delivery is challenging due to the lack of measurement and verification mechanisms.
Innovation Solution
A resuscitation device featuring a stationary and moving frame with a bellows system and a slide selector mechanism that allows for precise adjustment of tidal volume based on patient weight, ensuring consistent delivery of 6-8 ml/kg of air/oxygen, preventing over-ventilation through a stop mechanism that limits the intake stroke.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a resuscitation bag is used with manual compression, then the device is simple and easy to operate, but the tidal volume delivery is inconsistent and cannot be verified
Solution Approach 1:
The patent incorporates a volume indicator window that provides visual feedback to the operator about the actual tidal volume delivered. This allows the operator to see how much air has been delivered in each compression cycle, enabling them to adjust their compression force to achieve the target tidal volume consistently.
Solution Approach 2:
The patent replaces the purely mechanical manual compression system with a system that includes a bellows mechanism and volume indicator. The bellows provides a more consistent mechanical delivery system, and the volume indicator window adds a visual measurement component that replaces the need for operator estimation.
2Quantity of substance
If the medical professional compresses the bag harder to deliver more air, then the tidal volume increases, but the risk of over-inflation and lung injury increases
Solution Approach 1:
The volume indicator window provides real-time visual feedback on the tidal volume delivered. When the operator compresses the bag, they can see through the window how much air is being delivered, allowing them to stop compressing once the target tidal volume is reached, preventing over-inflation.
Solution Approach 2:
The patent designs the bag and bellows system with predetermined volume limits. The bellows mechanism and volume indicator window are configured to prevent delivery of excessive air volumes, providing a built-in safety mechanism that counteracts the operator's tendency to compress too hard.
3Measurement precision
If multiple resuscitation bags of different sizes are used to match patient weight, then the tidal volume delivery becomes more accurate, but the device complexity and storage requirements increase
Solution Approach 1:
The patent designs a single resuscitation bag that can serve multiple functions by adjusting the bellows position. The bellows can be positioned at different locations along the bag, allowing the same bag to deliver different tidal volumes appropriate for patients of different weights, eliminating the need for multiple separate bags.
Solution Approach 2:
The patent incorporates a movable bellows that can be dynamically positioned at different locations along the bag. This dynamic adjustment capability allows the device to adapt to different patient sizes and weight categories, providing accurate tidal volume delivery without requiring multiple static bag configurations.
4Device complexity
If the resuscitation device does not have a volume indicator, then the device structure is simpler, but the operator cannot verify the tidal volume delivered
Solution Approach 1:
The volume indicator window is a simple visual feedback mechanism that shows the operator the actual tidal volume delivered. This simple addition provides reliable verification without requiring complex electronic sensors or computer systems, maintaining device simplicity while improving reliability.
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 device ensures accurate and consistent tidal volume delivery tailored to individual patient lung capacity, reducing the risk of lung injury by allowing only the ideal volume of oxygen to be delivered, regardless of the user's compression force, thus providing reliable ventilation in emergency conditions.
Implementation Method 1
a bellows (20) coupled to both the moving frame (12a) and the stationary frame (12b)
Implementation Method 2
a stop (38) disposed on the stationary frame (12b) and configured to interact with a flat edge (170) of the slide selector (162) to limit the intake stroke
Data Source
AI summary
A device and method for adjusting a tidal breath delivered to a patient. The device includes a moving frame which is configured to move over a stationary frame that is nested within the moving frame itself. Disposed between the moving frame and the stationary frame is a compressible bellows which delivers a tidal breath to the patient each time the moving frame is passed over the stationary frame. The specific volume of the tidal breath that is delivered may adjusted according to the estimated weight of the patient, thereby preventing over inflation of the patient's lungs while undergoing treatment. To adjust the tidal breath volume, the user quickly changes the relative position of a slide selector which dictates the range of possible movement for the bellows to be compressed, thereby limiting the volume of air/oxygen which may be delivered by the bellows.