Rotating Electrode Bioimpedance Device for Body Shape Adaptation
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Solution Overview
Problem
Conventional bioimpedance measurement devices require additional devices for accurate body composition analysis and struggle to maintain consistent electrode contact across varying body shapes, leading to inaccuracies in bioimpedance and body shape identification.
Innovation Solution
A portable bioimpedance measurement device with rotating electrodes and a pressure sensor that can be gripped by hand, allowing for simultaneous bioimpedance and circumference measurement without additional equipment, ensuring consistent contact pressure and shape adaptation through rotating electrodes and a pressure sensor feedback system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional bioimpedance measurement devices are used, then body composition measurement is possible, but additional auxiliary devices are required and electrode contact consistency cannot be maintained across varying body shapes
Solution Approach 1:
The electrode assembly is designed to rotate about a shaft, allowing dynamic adjustment of electrode position and orientation. This rotational capability enables the electrodes to adapt to different body shapes and sizes while maintaining consistent contact pressure, eliminating the need for multiple fixed configurations or additional auxiliary devices.
Solution Approach 2:
The measurement device integrates both impedance measurement and circumference measurement capabilities into a single unit. The rotating electrode assembly serves multiple functions: it maintains consistent electrical contact for impedance measurement while simultaneously enabling mechanical circumference measurement, replacing the need for separate auxiliary devices.
2Measurement precision
If fixed electrode positions are used, then device structure is simple, but accurate body shape identification and bioimpedance measurement cannot be achieved across varying body shapes
Solution Approach 1:
The electrode assembly rotates about a shaft to dynamically adjust its position and orientation, enabling accurate adaptation to different body shapes and sizes. This dynamic adjustment ensures consistent electrode-to-skin contact and maintains measurement precision across varying anatomical configurations without requiring multiple fixed electrode arrays.
Solution Approach 2:
The device incorporates a circumference measurement mechanism that provides feedback on the actual body shape and size. This feedback information is used to adjust the electrode rotation and positioning, ensuring optimal contact and measurement accuracy for each specific body configuration.
3Productivity
If multiple separate devices are used for impedance and circumference measurement, then measurement comprehensiveness is improved, but ease of use and portability deteriorate
Solution Approach 1:
The invention merges impedance measurement and circumference measurement functions into a single integrated device. The rotating electrode assembly simultaneously performs electrical impedance measurement and mechanical circumference measurement, allowing both measurements to be taken in one step with one device, thereby improving ease of use and portability while maintaining measurement comprehensiveness.
Solution Approach 2:
The single measurement device is designed with universal functionality to perform both impedance and circumference measurements. The rotating electrode assembly serves dual purposes: establishing electrical contact for impedance measurement and providing mechanical engagement for circumference measurement, eliminating the need for multiple separate devices and auxiliary equipment.
Data Source
AI summary
A bioimpedance measurement device and an operation method thereof are disclosed. The disclosed bioimpedance measurement device comprises: a body part which accommodates a measurement circuit and comprises a grip that can be gripped by a hand; a first electrode and a second electrode which are coupled to a first shaft provided on one side of the body part and rotate about the first shaft; and a third electrode and a fourth electrode which are coupled to a second shaft provided on the one side of the body part at a position different from that of the first shaft. When a subject to be measured is surrounded by and comes into contact with the first electrode, the second electrode, the third electrode, and the fourth electrode, the bioimpedance of the subject to be measured is measured.