Sacroiliac Joint Exercise Device Lateral Decubitus Position
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Solution Overview
Problem
Conventional exercise assist devices for correcting pelvic tilts are ineffective in providing sufficient mobility for an abnormal sacroiliac joint, especially when the joint is in an abnormal condition, as they operate in supine or seated positions which limit joint mobility.
Innovation Solution
An exercise assist device that positions a user in a lateral decubitus position, using a leg support stand and sacrum support pad to apply load to the lower sacroiliac joint, allowing transitive movement of the leg to extend the hip joint and slide the sacrum backward, thereby improving joint mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If exercise assist devices operate in supine or seated position, then device structure is simple and easy to operate, but joint mobility is insufficient for abnormal sacroiliac joint
Solution Approach 1:
The patent changes the positional parameter from conventional supine or seated positions to lateral decubitus position. This parameter change fundamentally alters the gravitational load distribution on the sacroiliac joint, enabling the joint surface to open slightly in the posterior area and improving mobility for abnormal joints while maintaining operational simplicity
2Device complexity
If exercise assist devices operate in supine or seated position, then device structure is simple, but joint mobility is insufficient for abnormal sacroiliac joint
Solution Approach 1:
The patent modifies the positional parameter to lateral decubitus position, which leverages gravity to naturally open the posterior joint surface area. This parameter change achieves improved joint mobility without requiring complex mechanical structures, maintaining device simplicity while enhancing therapeutic effectiveness
3Reliability
If lateral decubitus position is used, then joint mobility is improved by opening posterior joint surface, but device structure becomes more complex
Solution Approach 1:
The patent utilizes gravity as a counterweight force in the lateral decubitus position. By positioning the patient laterally, gravity naturally applies load to the lower sacroiliac joint and opens the posterior joint surface area, eliminating the need for complex mechanical forces or actuators to achieve joint separation and mobility improvement
4Reliability
If lateral decubitus position is used, then joint mobility is improved, but ease of operation decreases
Solution Approach 1:
The patent changes the operational parameter from supine/seated to lateral decubitus position. This parameter change improves joint mobility through gravitational effects while the device design maintains ease of operation by using simple support structures that naturally position the patient without requiring complex adjustment mechanisms
Data Source
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AI summary
The conventional devices for improving a pelvic tilt and movement of a sacroiliac joint have been used in a supine position and in a seated position. Some of these conventional devices cannot provide sufficient mobility. The present invention provides an exercise assist device which transitively moves a sacroiliac joint in a lateral decubitus position. The following will describe Example in the context of a left lateral decubitus position. The upper right leg is placed on a stand (1) in the lateral decubitus position, and the upper right leg is then extended transitively backward with a sacral area supported by a sacrum support pad (2). Since a posterior side of a lower left sacroiliac joint (9b) is slightly opened, a sacrum (6) slides backward via a right hip joint (10a). This improves mobility of the lower left sacroiliac joint (9b).