Bed Step Stool with Integrated Guardrails for Safe Entry and Exit
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Solution Overview
Problem
Seniors and individuals with limited mobility face challenges when entering and exiting bathtubs due to high walls and slippery surfaces, and existing bed rails are not portable or flexible, limiting their mobility and safety.
Innovation Solution
A step stool with adjustable, perpendicular guardrails and a step assembly that can be clamped to the bathtub side, providing a stable and secure entry and exit pathway, along with features like motion-detecting lighting and non-slip surfaces for enhanced safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional bed rails are used, then fall prevention is improved, but portability and flexibility deteriorate
Solution Approach 1:
The device is divided into separate modular components: a step stool with integrated guardrails that can be detached and relocated. This segmentation allows the fall prevention system to be moved between different locations (bed, bathtub, chair) while maintaining its safety function, thus resolving the contradiction between reliability and portability.
Solution Approach 2:
The step stool with guardrails is designed as a multi-functional device that can serve multiple purposes: as a step stool for elevation, as a guardrail system for fall prevention, and as a portable support structure. This universality allows a single device to address both portability requirements and fall prevention needs across different settings.
2Reliability
If bathtub walls are made high, then safety is improved, but ease of entry and exit deteriorates
Solution Approach 1:
The step stool acts as an intermediary element between the bathroom floor and the bathtub interior. It provides a intermediate elevation level that reduces the height difference, allowing users to transition gradually from the floor to the tub while maintaining the safety benefits of high bathtub walls. The integrated guardrails further mediate the transition by providing hand support.
Solution Approach 2:
The device incorporates adjustable components including height-adjustable guardrails and repositionable steps. This dynamic adjustability allows the system to adapt to different user capabilities and bathtub configurations, making entry and exit easier while maintaining safety through customizable support levels.
3Ease of manufacture
If bathtub surfaces are made slippery, then cleanliness is improved, but safety deteriorates
Solution Approach 1:
The step stool and guardrails feature localized non-slip surfaces on contact areas (steps and handgrips) while the rest of the bathtub maintains its smooth, cleanable surfaces. This local quality differentiation provides enhanced grip where needed without compromising the overall cleanliness and ease of maintenance of the bathtub system.
Solution Approach 2:
The device combines different materials with complementary properties: non-slip materials (such as rubber or textured plastics) for contact surfaces and smooth, non-porous materials for other parts that require easy cleaning. This composite material approach resolves the contradiction between slip resistance and cleanability by applying appropriate material properties to specific functional areas.
Data Source
AI summary
A bed step stool for assisting a user into and out of bed including opposite sides, a head, and a foot, comprising a first support to be disposed closer to the head of the bed; a second support to be disposed closer to the foot of the bed; wheels configured to allow the bed step stool to roll on a surface; a step assembly supported by the wheels and supported between the first support and the second support, the step assembly to enable the user to step thereon for assisting the user into and out of the bed; a seat assembly disposed above the step assembly, the seat assembly configured to be moved between a deployed position where the user can rest thereon and a stored position.