BMD Examining Table With Adjustable V-Plates for Hip Posture
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Solution Overview
Problem
Existing examining tables for bone mineral density (BMD) measurement at the hip joint are inaccurate due to inconsistent leg abduction angles for patients of different heights, which affects the standardization of patient posture and measurement accuracy.
Innovation Solution
An examining table with a guide block forming a V-shaped included angle, inclined plates with fixing mechanisms, and a drive mechanism that synchronously adjusts the positions of the inclined plates based on patient foot placement, ensuring standardized leg abduction angles for accurate BMD measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If an isosceles trapezoidal frame is fixed to the examining table to ensure standardized posture, then patient posture stability is improved, but measurement precision deteriorates for patients of different heights due to inconsistent leg abduction angles
Solution Approach 1:
The patent transforms the fixed isosceles trapezoidal frame into a movable structure with adjustable inclined plates. The drive mechanism enables the inclined plates to move synchronously along the extension lines of the V-shaped included angle, allowing the leg abduction angle to be dynamically adjusted according to patient height while maintaining standardized posture during measurement.
Solution Approach 2:
The patent changes the geometric parameters of the supporting structure by introducing adjustable inclined plates with variable angles. The drive mechanism controls the position of inclined plates along the V-shaped angle extension lines, enabling continuous adjustment of leg abduction angles to match different patient heights while preserving measurement precision.
2Adaptability or versatility
If the isosceles trapezoidal frame is made adjustable for different patient heights, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent divides the frame structure into separate components: a fixed examining table, movable inclined plates, and independent drive mechanisms. Each inclined plate can be adjusted independently along the V-shaped angle extension lines, allowing flexible adaptation to different patient heights while keeping each component's design relatively simple.
Solution Approach 2:
The drive mechanism serves multiple functions: it controls the synchronous movement of both inclined plates, maintains the V-shaped angle geometry, and enables adjustment for various patient heights. This multi-functionality reduces the need for separate adjustment mechanisms for each component, thereby limiting the increase in overall device complexity.
Data Source
AI summary
Disclosed is an examining table for bone mineral density (BMD) measurement, falling within the field of medical devices. The table includes a table body, a guide block, inclined plates, fixing mechanisms and a drive mechanism. The arranged drive mechanism drives two inclined plates to move synchronously along extension lines of a V-shaped included angle in a same direction, allowing the present disclosure to adjust positions of the inclined plates based on the placement of a patient's feet. When used in conjunction with the fixing mechanisms on the inclined plates, patients of different heights may always maintain a standardized posture during hip joint BMD measurement, ensuring accuracy of measurement results.