Articulating Traction Chair for Upright Spinal Decompression
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Solution Overview
Problem
Current traction devices for spinal decompression, such as inversion tables and gravity-based chairs, pose risks for individuals with certain health conditions and are not practical for everyday use as household furniture, lacking comfort and attractiveness.
Innovation Solution
A reclining traction chair with an articulating design that creates a gap between the seat and backrest, utilizing frictional material to enhance traction force, allowing for comfortable and safe spinal decompression during relaxation activities like watching TV or reading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If inversion therapy is used for spinal decompression, then traction force is applied to the spine, but blood rushes toward the head causing health risks
Solution Approach 1:
Instead of inverting the entire body as in traditional inversion therapy, this patent applies the principle by inverting only the lower body while keeping the upper body upright. The chair back tilts backward and the seat tilts forward, creating an inverted position for the hips and legs while the torso remains vertical, thus applying traction to the spine without causing blood to rush to the head
Solution Approach 2:
The inversion action is segmented into separate body regions. The upper body (torso and head) remains upright and stable, while only the lower body (hips and legs) is inverted. This segmentation allows selective application of gravitational traction to the lumbar spine region without subjecting the entire body to the harmful effects of full inversion
2Force
If gravity-based traction chairs are used, then spinal decompression is achieved, but the devices are not practical for everyday use as household furniture
Solution Approach 1:
The chair is designed to serve multiple functions: it can be used as a regular seating chair for everyday household activities, and it can be transformed into a traction device for spinal decompression. The articulating mechanism allows the chair to switch between a standard seating position and a traction position, making it versatile enough for both practical daily use and therapeutic purposes
Solution Approach 2:
The chair incorporates dynamic, articulating components that allow it to change its configuration. The seat back and seat portion can articulate relative to each other, enabling the chair to transition from a static furniture piece to an active traction device. This dynamic capability allows the same structure to provide both comfort for sitting and effective traction when needed
3Force
If frictional material is added to enhance traction force, then mechanical traction is applied to the body, but the chair structure becomes more complex
Solution Approach 1:
Instead of using complex mechanical systems to apply friction-based traction, the patent uses simple, easily replaceable frictional material (such as rubber or textured fabric) attached to the seat and backrest surfaces. This material provides the necessary grip to prevent sliding and enhance traction force, and if worn, can be easily replaced without affecting the overall chair structure
Solution Approach 2:
The frictional material acts as an intermediary between the chair surfaces and the user's body. It provides the necessary friction force to enhance mechanical traction without requiring direct mechanical coupling or complex linkage mechanisms. The material mediates the interaction between the articulating chair structure and the user, enabling effective traction through a simple, low-complexity solution
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
Provides effective traction relief to the spine while being comfortable and practical for daily use, avoiding the risks associated with inversion therapy and offering an attractive, versatile piece of household furniture.
Implementation Method 1
The frictional material grips the clothing or skin of the seated user and allows for mechanical traction to be applied to the user's body; essentially allowing the lower body to be pulled away from the upper body, thus increasing the tractive force upon the spine beyond that applied by gravitational traction alone
Implementation Method 2
The user seats himself in the chair and then articulates the chair so that the gap opens beneath the vertical line of the user's spine, causing the weight of the lower body to suspend slightly into the gap, thus creating traction by gravity
Data Source
AI summary
A traction chair is disclosed which functions as a normal chair when not in use, but which can be deployed to provide a user with traction for decompressing the spine. The traction chair employs a stationary framework that is supported on the ground. A number of articulating components are mounted on the stationary framework; the articulating components being actuated by a motive force. The articulating components when actuated together cause the seat portion of the chair to separate from the backrest portion and open up a widening gap between the seat portion and backrest portion of the chair.