Open-Door Therapeutic Boot for Heel Pressure Relief Access

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Solution Overview

Problem

Existing devices fail to effectively offload pressure from injury sites on the lower extremities of bedridden patients, causing pain and hindering wound healing, while also obstructing access for visual inspection and treatment.

Innovation Solution

A therapeutic boot with a rotatable sole and flaps that allow unobstructed access to the plantar surface without applying pressure, featuring a hinge mechanism and hook-and-loop fasteners to maintain visibility and minimize irritation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a gate is used to provide access to the plantar surface, then visual inspection is enabled, but the gate cannot be easily opened and requires separating two interleaving flaps which may apply unintended pressure to the injury site

Engineering Contradiction:
Improveease of opening access mechanismVSAvoidunintended pressure on injury site
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The boot is divided into separate functional segments: a removable insole that provides access to the plantar surface, distinct from the upper and outsole. This segmentation allows the insole to be easily removed without manipulating complex flap mechanisms, thereby enabling access while avoiding pressure on the injury site.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The insole is designed as a separate, extractible component from the boot structure. By taking out the insole, practitioners gain direct access to the plantar surface for visual inspection and treatment without needing to separate interleaving flaps, thus eliminating the risk of applying unintended pressure to sensitive areas.

Inventive Principle:
Principle #2Taking out (Extraction)

2Loss of information

If flaps are separated to maintain unobstructed view of the injury site, then visual access is improved, but the flaps must be held apart which requires continuous manual intervention and may still apply pressure

Engineering Contradiction:
Improvevisual access to injury siteVSAvoidease of maintaining access
Core Design Contradiction:
Loss of informationVSEase of operation

Solution Approach 1:

The insole is completely extracted from the boot structure, providing full visual and physical access to the plantar surface without requiring any parts to be held apart. The removal of the insole creates an unobstructed view while eliminating the need for continuous manual intervention to maintain access.

Inventive Principle:
Principle #2Taking out (Extraction)

3Object-affected harmful factors

If the inner flap is positioned close to the plantar surface for protection, then protection is improved, but separating the flaps requires pulling the inner flap away which applies painful pressure to the injury site

Engineering Contradiction:
Improveprotection from irritationVSAvoidease of opening access
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The protective function is separated from the access function. The insole serves as the protective element that can be easily removed, while the upper and outsole remain as the structural protective shell. This segmentation allows the protective insole to be taken out without requiring forceful manipulation that would apply pressure to the injury site.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS12508144B2Sides-down, open door pressure relief boot
Publication Date: 2025.12.30 N Y ORTHOPEDIC USA INC
  • US12508144B2 patent drawing
  • US12508144B2 patent drawing
  • US12508144B2 patent drawing

AI summary

Apparatus and methods for a therapeutic boot that promotes the healing of pressures sores is described. Bedridden patients are prone to developing pressure sores over bony prominences of the foot such as a heel. The therapeutic boot includes a sides-down, open door design that provides unobstructed access to a wound site. The therapeutic boot may be designed to offload the patient's heel and bony prominences on both sides of the patient's ankle. The therapeutic boot is designed such that opening and closing the boot does not apply pressure and or friction to the wound site.