Dynamic Orthopedic Seat Structure for Pelvic Lordotic Alignment

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Solution Overview

Problem

Conventional seating devices fail to effectively improve posture and prevent repetitive stress injuries associated with prolonged sitting, as they do not adequately adjust to the user's body shape to maintain proper pelvic and spinal alignment.

Innovation Solution

A seating apparatus with a foundation member featuring varying thickness regions and a bowl portion that applies upward and inward compressive forces to the pelvic area, rotating to tilt the pelvis into a lordotic position, thereby maintaining correct posture and restricting gluteal spreading.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional seating devices with fixed shape are used, then manufacturing simplicity is maintained, but they fail to adjust to user's body shape for proper pelvic and spinal alignment

Engineering Contradiction:

Improveadjustment to user's body shapeVSAvoidseating device structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The foundation member is designed with dynamic characteristics, allowing it to rotate between a first position and a second position in response to user weight, thereby actively adjusting pelvic alignment rather than maintaining a fixed static form

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The foundation member incorporates varying thickness regions that create differential flexibility across its structure, enabling specific areas to deform or rotate at different rates under load, which facilitates automatic adaptation to user body shape

Inventive Principle:

Principle #35Parameter changes

2Reliability

If conventional seating devices are used, then device simplicity is maintained, but they cause repetitive stress injuries to the back and pelvis

Engineering Contradiction:

Improveprevention of repetitive stress injuriesVSAvoidseating device structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The bowl portion is pre-configured with upwardly inclined lateral portions and varying thickness regions that generate counteracting forces against harmful gluteal spreading and pelvic misalignment before they can cause injury, effectively preventing repetitive stress injuries through built-in mechanical opposition

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

The bowl portion with its curved, inclined lateral surfaces provides ergonomic contouring that naturally guides pelvic positioning and distributes loads more evenly, reducing stress concentration points that lead to repetitive injuries

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Ease of operation

If the foundation member rotates to tilt the pelvis into lordotic position, then proper posture is maintained, but the mechanism increases device complexity

Engineering Contradiction:

Improveposture correctionVSAvoidrotation mechanism

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The foundation member performs automatic posture correction through passive rotation driven by user weight and the inherent flexibility differential of its varying thickness regions, eliminating the need for active control systems, motors, or complex mechanical actuation mechanisms

Inventive Principle:

Principle #25Self-service

4Force

If the bowl portion applies upward and inward compressive forces, then pelvic alignment is improved, but the structural complexity increases

Engineering Contradiction:

Improvecompressive force on pelvic areaVSAvoidbowl portion structure

Core Design Contradiction:

ForceVSDevice complexity

Solution Approach 1:

The bowl portion employs varying thickness regions that concentrate material where higher compressive forces are needed (lateral portions) while reducing material where less force is required, creating localized force application zones that improve pelvic alignment without requiring uniform structural reinforcement throughout

Inventive Principle:

Principle #3Local quality

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 seating apparatus continuously adjusts to maintain a lordotic curve of the pelvis, reducing strain on the spine and minimizing the risk of repetitive stress injuries by distributing weight evenly and providing dynamic support during movement.

Implementation Method 1

The foundation member is configured to rotate between a first position and a second position in response to a user's weight

Methodology Applied

Scientific EffectGravity: Gravitation

Implementation Method 2

The lateral portion has plural regions of varying flexibility and the front portion has plural regions of varying flexibility

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS9427086B2Apparatus and system for dynamically correcting posture

Publication Date: 2016.08.30 BACKJOY ORTHOTICS LLC

AI summary

An orthopedic device for improving posture while sitting, having a foundation member including a front portion for upper legs and a bowl portion for lower pelvic area. The bowl portion has a central portion and an upwardly inclined lateral portion. The lateral portion and the front portion collectively surround the central portion. A platform portion is connected with a concave recessed portion. An arm portion is connected to the platform portion. The central portion has plural regions of varying flexibility and the lateral portion has plural regions of varying flexibility. A seating apparatus is connected with the orthopedic seating device.