Crutch Elevation Unit and Tip Cover Design
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Solution Overview
Problem
Conventional handicap apparatus such as crutches, walkers, and wheelchairs lack features to elevate the leg of users, which can improve circulation and comfort, and often have problematic tip attachments that detach easily.
Innovation Solution
The design includes a crutch with a resilient bumper structure, a detachable tip cover, and an elevation unit that can be mounted to various handicap apparatus, allowing for leg elevation and improved circulation, featuring a platform that can be manually adjusted and a pillow member for comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional handicap apparatus are used, then basic mobility support is provided, but leg elevation capability is lacking which worsens circulation
Solution Approach 1:
The crutch is designed to perform multiple functions: providing mobility support, elevating the leg, and offering comfort through a pillow member. The elevation platform and pillow member are integrated into the crutch structure, allowing a single device to address both mobility and circulation needs.
Solution Approach 2:
The crutch is divided into functional segments: the main crutch structure for mobility, the detachable elevation platform for leg raising, and the removable pillow member for comfort. This segmentation allows each component to be optimized for its specific function while maintaining overall versatility.
2Reliability
If tip covers are attached to crutch poles, then ground engagement is improved, but the tip covers frequently detach
Solution Approach 1:
The tip cover features a rounded, spheroidal shape that fits over the pole tip. This curved design provides natural retention through friction and geometry, preventing the tip cover from detaching during use while maintaining ease of attachment and removal when needed.
3Ease of operation
If handicap apparatus lack leg elevation features, then device simplicity is maintained, but user circulation and comfort deteriorate
Solution Approach 1:
The elevation platform is designed to be adjustable and movable, allowing users to dynamically change the leg elevation angle and height according to their comfort needs and circulation requirements. This dynamic capability is achieved through a simple mechanical linkage that adds minimal complexity.
Solution Approach 2:
The pillow member is designed as a simple, lightweight, and potentially replaceable component that provides comfort without adding significant structural complexity. Its simple construction allows it to be easily manufactured and replaced if needed, maintaining overall device simplicity.
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 solution effectively elevates the leg of users while seated, improving circulation and comfort, and enhances the stability and usability of handicap apparatus by providing a secure and adjustable tip cover system.
Implementation Method 1
The bumper structures comprise a resilient body that varies in density to provide a softer exterior and a harder interior
Implementation Method 2
The floor may include a honeycomb matrix of spaced apart open spaces in the body
Data Source
AI summary
Disclosed are handicap apparatus using (a) one or more resilient, snap-on bumper structures, (b) unique tips covers, (c) leg elevating units, (d) resilient structures having a density that provides a softer exterior and a harder interior. The handicap apparatus includes crutches, canes, wheelchairs, scooters, and walkers.