Evacuation Sheet with Self-Inflating Gas Chamber
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Solution Overview
Problem
Existing evacuation devices for bedridden persons are time-consuming and difficult to use in emergencies, with separate buckle elements and straps that require complex assembly and can cause injuries and delays during evacuation.
Innovation Solution
A device featuring a single flexible wrapping sheet that envelops the mattress and person, with self-inflatable gas chambers and Velcro fastening for rapid deployment and secure wrapping, reducing the need for multiple straps and minimizing the risk of injury.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate buckle elements and straps are used, then the mattress and person can be secured, but the evacuation process becomes time-consuming and complex
Solution Approach 1:
The patent combines multiple separate straps and buckle elements into a single integrated wrapping sheet with continuous edges. The wrapping sheet encompasses the entire mattress and person as one unified structure, eliminating the need for separate straps to be individually positioned and fastened. This merging of components directly reduces evacuation time while maintaining securing effectiveness through the continuous envelope structure.
Solution Approach 2:
The wrapping sheet is designed with specific functional segments including continuous edges for envelopment, handles for gripping, and drag loops for movement. These segmented features allow the single sheet to perform multiple functions that previously required separate components, enabling rapid deployment without compromising security.
2Reliability
If multiple separate straps are used, then the person can be restrained, but the device complexity increases and assembly becomes difficult
Solution Approach 1:
The patent integrates multiple restraint functions into a single wrapping sheet structure. The continuous edges and envelope design provide comprehensive restraint without requiring multiple separate straps to be individually positioned and fastened. This significantly reduces device complexity and assembly difficulty while maintaining or improving restraint effectiveness through the continuous enveloping structure.
3Reliability
If straps with buckle elements are used, then the person can be secured to the mattress, but the risk of cutting injuries increases
Solution Approach 1:
The patent replaces narrow straps with buckle elements with a single continuous wrapping sheet that envelops the person and mattress. This continuous fabric structure distributes pressure over a larger surface area, eliminating the concentrated pressure points and cutting risks associated with narrow straps. The securing effectiveness is maintained through the envelope structure while the harmful cutting factor is removed.
4Reliability
If separate straps and buckles are used, then the mattress can be secured, but the straps can become hidden under the mattress and are difficult to grasp
Solution Approach 1:
The patent integrates handles and drag loops directly into the wrapping sheet structure, ensuring these operational elements remain externally accessible and visible. The continuous envelope design prevents fastening elements from becoming hidden under the mattress, and the attached handles provide optimal grasping surfaces. This improves ease of operation while maintaining securing effectiveness through the integrated design.
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 quick and secure evacuation of bedridden individuals by simplifying the wrapping process, reducing the risk of injury, and providing effective protection against falls and fire hazards.
Implementation Method 1
The evacuation device (31) comprises a self-inflatable gas chamber (46) which is connected to the wrapping sheet (47) for moving the wrapping sheet from under the mattress (32) on at least one long side of the mattress (32) upon inflation of the gas chamber (46)
Data Source
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AI summary
The present invention relates to a device for evacuating a person lying on a mattress, comprising a central portion having two opposite long sides and two opposite short sides, which sides substantially correspond to those of a mattress with which the device is used, said device comprising wrapping means for wrapping the mattress and a person lying thereon, said wrapping means comprising an at least partially flexible wrapping element having two projecting parts which each extend from underneath a respective long side of the mattress in the wrapping position, and fastening means for fastening the two projecting parts together when forming the envelope, wherein said at least one flexible wrapping element of the device according to the invention comprises a first wrapping sheet on a first long side of the central portion. The invention further relates to a method for evacuating a person lying on a mattress by means of such a device.