Pendular Joint Decompression Device Leg Flexion
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Solution Overview
Problem
Existing pendular joint decompression devices do not allow for leg flexion, which is necessary to replicate walking movements, limiting their effectiveness in therapeutic and preventive applications.
Innovation Solution
A pendular joint decompression device with a traction system that includes cabling, leg-receiving means, traction means, and oscillation means, where the leg-receiving means apply forces to the back of the calf and the front of the ankle simultaneously, enabling leg flexion and movement close to walking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the existing device uses a simple bar or chutes configuration for leg-receiving means, then the device structure is simple, but the legs cannot flex to generate walking-like movements
Solution Approach 1:
The leg-receiving means is divided into multiple functional components: chutes for receiving legs, counter-bearing means for applying forces, and connection elements to the cabling. This segmentation allows each component to perform its specific function independently, enabling leg flexion while maintaining overall system manageability.
Solution Approach 2:
The leg-receiving means transitions from a static bar or chute configuration to a dynamic system that can apply variable forces to the legs. The counter-bearing means enables the system to adapt to different leg positions and apply appropriate forces to generate flexion movements, making the device more responsive to therapeutic needs.
2Adaptability or versatility
If the leg-receiving means apply forces at multiple points (calf and ankle), then leg flexion and walking movement are enabled, but the force application system becomes more complex
Solution Approach 1:
The counter-bearing means serves multiple functions: it applies forces to the legs, supports the leg-receiving chutes, and interfaces with the cabling system. This multi-functionality reduces the need for separate components for each function, thereby limiting the increase in overall device complexity while achieving versatile movement reproduction.
Solution Approach 2:
The counter-bearing means acts as an intermediary between the cabling system and the legs. It translates the tensile forces from the cabling into appropriate forces applied at specific points on the legs (calf and ankle), enabling complex movements without requiring direct complex force application mechanisms.
3Reliability
If the device adds oscillation means and traction means to the basic table, then joint decompression effectiveness is improved, but the device becomes more complex
Solution Approach 1:
The oscillation means and traction means are merged into a single integrated system that shares common components such as the cabling and counter-bearing means. This merging allows the device to perform both oscillation and traction functions simultaneously or sequentially without requiring completely separate systems, thereby limiting the increase in complexity while maintaining high decompression effectiveness.
Data Source
AI summary
A pendular joint decompression device including a table configured to support a person lying on his or her back, and a traction system including cabling, a leg-receiving unit secured to the cabling and configured to link this cabling to the person's legs, a traction unit configured to act on the cabling, an oscillator configured to act on the cabling, and a control unit capable of controlling the traction unit and the oscillator in order to combine lateral oscillation movements and traction movements on the person's raised legs, characterized by the fact that the leg-receiving unit is configured to apply, for each of the person's legs, a force on the rear of the calf and a force on the front of the ankle, simultaneously, when the traction unit acts on the cabling.