Dynamic Seating Tilt Mechanism for Proprioception and Core Stability

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Solution Overview

Problem

Static seating devices fail to provide the necessary dynamic movement for proper neuromuscular activation, leading to poor posture, back pain, and increased risk of injuries like scoliosis and pressure ulcers, especially in individuals with neuromuscular impairments, as they do not effectively engage the proprioceptive and vestibular systems.

Innovation Solution

A dynamically designed seating system with an omni-directional tilt mechanism and a nonlinear restoring force, utilizing a Gimbal joint and adjustable dampening system, which allows for safe and adaptive movement, positioning the user's pelvis at the axis of rotation to encourage natural posture and muscle engagement without conscious effort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a static seating surface is used, then manufacturing simplicity is maintained, but proprioceptive activation and neuromuscular engagement are insufficient

Engineering Contradiction:

Improveseating device simplicityVSAvoidposture maintenance and injury prevention

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent transforms the static seating surface into a dynamic one by incorporating a tilting mechanism that allows the seat to rotate about a longitudinal axis. This dynamic capability enables the seating device to respond to user movement and provide continuous proprioceptive stimulation, thereby improving posture maintenance and injury prevention while maintaining manufacturing feasibility through a relatively simple mechanical tilt mechanism.

Inventive Principle:

Principle #15Dynamics

2Reliability

If a non-static seating environment is provided using large balls, then proprioceptive stimulation is improved, but the seating feels unsafe and triggers fight-or-flight response

Engineering Contradiction:

Improveproprioceptive activationVSAvoiduser anxiety and muscle tension

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent modifies the key parameter of rotational freedom by limiting the tilting motion to a controlled range about a longitudinal axis, rather than allowing free rotation in all directions. This parameter change provides sufficient proprioceptive stimulation while maintaining user safety and comfort, preventing the fight-or-flight response that occurs with uncontrolled movement on large balls.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces a mechanical intermediary system (the controlled tilting mechanism) that mediates between the user's body movements and the seating surface response. This intermediary provides smooth, predictable motion that feels safe to the user while still delivering the necessary proprioceptive input, unlike the direct and uncontrolled movement experienced on large balls.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Use of energy by moving object

If the deep layer muscles are not activated, then energy consumption is reduced, but back injuries and posture deterioration occur

Engineering Contradiction:

Improveenergy consumptionVSAvoidback pain and spinal injury

Core Design Contradiction:

Use of energy by moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent implements a self-service mechanism where the seating device automatically detects and responds to user posture and movement through its tilting capability. The system requires no conscious effort from the user to activate the deep layer muscles - the natural interaction with the tilting surface provides the necessary stimulation, thereby preventing back injuries without requiring additional energy expenditure from the user.

Inventive Principle:

Principle #25Self-service

4Duration of action of moving object

If passive dynamic seating with periodic external movement is used, then non-static environment is provided, but the body fights the seat movement as intrusion

Engineering Contradiction:

Improvedynamic movement provisionVSAvoiduser comfort and acceptance

Core Design Contradiction:

Duration of action of moving objectVSEase of operation

Solution Approach 1:

The patent inverts the control approach by making the seating surface passive and responsive rather than active and imposing. Instead of the seat moving the user (passive dynamic seating), the user's own movements cause the seat to tilt (active user control). This inversion eliminates the fight-or-flight response because the movement originates from the user's own actions rather than external imposition.

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS7686396B2Method and apparatus to enhance proprioception and core health of the human body

Publication Date: 2010.03.30 EXPECTATIONS LLC

AI summary

A device to actively enhance proprioception and core strength of its user consisting of a motion control system providing a tilt plate that is dampened with a suspension system to provide a system to deliver an exercise regimen that automatically detects and strengthens core muscles in an unobtrusive manner by allowing the individual to move freely while seated. The device can be configured into a chair, stool, wheelchair seat insert, vehicle or airplane seat or exercise device generically known as balance board. The device is intended to enhance the user's proprioception core strength, sense of balance, and overall physical well being.