Replaceable EVA Insole for Rehabilitation Boot Pressure Relief
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Solution Overview
Problem
Conventional rehabilitation boots and plaster casts lack adjustability, provide insufficient pressure reduction, suffer from poor breathability leading to discomfort, and require inconvenient cleaning due to non-replaceable and potentially contaminated bushing materials.
Innovation Solution
A replaceable pressure-reducing breathable insole with decompression protrusions and breathable holes, made of ethylene vinyl acetate copolymer (EVA), that can be easily replaced and provides adjustable pressure relief and ventilation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a conventional bushing cloth is used in a rehabilitation boot, then the boot can provide positioning effect to the broken limb, but the cloth cannot provide pressure-reducing effect when the limb touches the ground or impacts against a wall
Solution Approach 1:
The insole is made of porous EVA material with multiple breathable holes formed through the body, allowing air circulation and pressure distribution. The porous structure enables the material to absorb and dissipate impact forces while maintaining breathability, resolving the contradiction between pressure reduction and comfort.
Solution Approach 2:
Multiple decompression protrusions are disposed on the bottom surface of the insole body at spaced intervals. These protrusions create multiple airways between the bottom of the rehabilitation boot and the bottom surface of the insole, distributing pressure evenly across the foot surface and preventing concentrated stress points.
2Reliability
If the bushing cloth is contaminated with fluid from the wound or produces dirty odor, then the patient needs to take the cloth out to wash and dry it, but this makes the patient unable to use the rehabilitation boot temporarily
Solution Approach 1:
The insole is designed as a replaceable component that can be easily removed from the rehabilitation boot. When contaminated or soiled, the insole can be discarded and replaced with a new one, eliminating the need for washing and drying operations. This resolves the contradiction between maintaining hygiene and avoiding loss of time by making the insole disposable rather than reusable after contamination.
Solution Approach 2:
The insole is designed as a separate, detachable component from the rehabilitation boot structure. The opening at the front side of the tubular sleeve allows the insole to be easily inserted and removed. This segmentation enables the insole to be replaced independently without affecting the boot itself, resolving the contradiction between hygiene maintenance and convenience.
3Ease of operation
If the bushing cloth has poor breathability, then the patient may experience stuffiness and discomfort, but improving breathability may reduce the positioning effect
Solution Approach 1:
The insole is made of porous EVA material with multiple breathable holes formed through the body at spaced intervals. These holes communicate with airways created by decompression protrusions, creating effective ventilation channels that maintain breathability while the overall insole structure remains intact to provide positioning support.
Solution Approach 2:
Breathable holes are formed through the top surface and bottom surface of the insole body at spaced intervals, creating localized ventilation areas. The decompression protrusions on the bottom surface create additional airways in specific regions. This local quality approach provides breathability where needed while maintaining the overall structural integrity and positioning effect of the insole.
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 insole offers comfortable, hygienic, and effective pressure reduction with improved breathability, allowing easy cleaning and preventing secondary infections by enabling easy replacement.
Implementation Method 1
multiple decompression protrusions disposed on and protruded from the bottom surface of the body at spaced intervals to abut against a bottom of the rehabilitation boot to form multiple airways between the bottom of the rehabilitation boot and the bottom surface of the body
Implementation Method 2
multiple breathable holes formed through the top surface and the bottom surface of the body at spaced intervals and communicate with the airways between the bottom of the rehabilitation boot and the bottom surface of the body
Implementation Method 3
The decompression protrusions are disposed on and protruded from the bottom surface of the body at spaced intervals, abut against a bottom of the rehabilitation boot to form multiple airways between the bottom of the rehabilitation boot and the bottom surface of the body, and are elastic
Data Source
AI summary
A replaceable pressure-reducing breathable insole for a rehabilitation boot has a body, multiple decompression protrusions, and multiple breathable holes. The body has a top surface, a bottom surface, and a side wall annularly formed between the top surface and the bottom surface of the body to form an outer contour of the body. The decompression protrusions are disposed on and protruded from the bottom surface of the body at spaced intervals, abut against a bottom of the rehabilitation boot to form multiple airways between the bottom of the rehabilitation boot and the bottom surface of the body, and are elastic. The breathable holes are formed through the top surface and the bottom surface of the body at spaced intervals and communicate with the airways between the bottom of the rehabilitation boot and the bottom surface of the body.