Mountainous earthquake rescue stretcher

The mountain earthquake rescue stretcher, formed by foaming biodegradable polyurethane A and B materials inside a shape-controlled outer cover, resolves the contradiction between portability and rigid fixation, avoids secondary injuries, and has buoyancy and heat insulation functions, making it suitable for mountain earthquake rescue.

CN116672171BActive Publication Date: 2026-06-26SOUTHWEAT UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHWEAT UNIV OF SCI & TECH
Filing Date
2023-06-19
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing mountain earthquake rescue stretchers struggle to balance portability and rigid fixation, failing to meet the need for stable immobilization of injured personnel during mountain earthquake rescue operations, and posing a risk of secondary injury.

Method used

The rigid polyurethane foam is formed by mixing and foaming biodegradable polyurethane A and B materials at room temperature. It is designed as a shape-controlled outer cover structure, which is easy to carry after being rolled and packaged. When in use, the foam is mixed and foamed inside the shape-controlled outer cover to form a rigid support surface and fixation surface, which meets the transportation requirements of earthquake fracture injuries.

Benefits of technology

It combines portability with rigid fixation, avoids secondary damage, provides buoyancy and heat insulation, and degrades naturally after several months without affecting the environment.

✦ Generated by Eureka AI based on patent content.

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    Figure CN116672171B_ABST
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Abstract

The present application provides a mountainous earthquake rescue stretcher, which comprises two different states before use and during use. Before use, the stretcher is composed of a contoured cover matched with human body, an A material tank filled with degradable polyurethane A material and a B material tank filled with degradable polyurethane B material. The contoured cover, the A material tank and the B material tank are curled and packed to form a cylindrical package, which is small in volume, light in weight and very convenient to carry. During use, the degradable polyurethane A material and the degradable polyurethane B material are injected into the contoured cover to mix and foam. The foam body can fill the cavity of the contoured cover and form a hard supporting surface and a stable fixing surface in 3-5 minutes, which meets the requirements of the hard stretcher for earthquake fracture injury and can avoid secondary injury to the wounded caused by the too soft supporting surface and the unstable fixing surface during the transportation in the mountainous earthquake rescue.
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