Elastic Arm Cuff Clamp Structure for Accurate Blood Pressure Measurement
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Solution Overview
Problem
Conventional arm-type sphygmomanometers cause discomfort due to protruding components and result in inaccurate blood pressure measurements during inflation and deflation of the cuff.
Innovation Solution
A sphygmomanometer arm band with a clamp featuring an arc-grip part and arc-shaped force parts that elastically clamp on the cuff, allowing for convenient and accurate blood pressure measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional two-piece structure with hub and spring is used, then the clamp can be simplified in structure, but the protruding components cause discomfort on the subject's upper arm
Solution Approach 1:
The patent merges the hub and spring components into a single integrated elastic clamp body. The clamp is formed as one piece with an elastic material that provides both the structural support previously requiring a hub and the spring mechanism for clamping force, eliminating protruding components that cause discomfort.
Solution Approach 2:
The clamp is constructed from elastic material that forms a flexible structure. This flexible design allows the clamp to conform to the arm's surface without creating uncomfortable pressure points, while still providing sufficient clamping force to secure the cuff during blood pressure measurement.
2Device complexity
If a conventional two-piece structure is used, then the clamp structure is simpler, but the blood pressure measurement result becomes less accurate
Solution Approach 1:
The integrated elastic clamp provides more stable and consistent clamping force compared to the two-piece structure. This stability ensures the cuff remains properly positioned during inflation and deflation, preventing movement that would compromise measurement accuracy.
Solution Approach 2:
The elastic material properties of the integrated clamp allow for controlled deformation during cuff inflation and deflation. This elastic behavior maintains optimal clamping pressure throughout the measurement cycle, ensuring accurate blood pressure readings without the structural instability of conventional designs.
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
The design provides comfort during measurement and enhances accuracy by minimizing arm compression, facilitating easier arm insertion and ensuring precise blood pressure readings.
Implementation Method 1
The clamp includes an arc-grip part having two opposite ends and configured to elastically clamp on the cuff
Data Source
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AI summary
A sphygmomanometer arm band for an arm-type sphygmomanometer includes a cuff and a clamp; the clamp includes an arc-grip part, a first arc-shaped force portion, and a second arc-shaped force portion, the arc-grip part is configured to elastically clamp on the cuff, the first arc-shaped force portion and the second arc-shaped force portion are respectively disposed on the outer side of the arc-grip part for applying a force to control a gap between the two opposite ends of the arc-grip part. Thereby, the blood pressure measurement operation can be performed more conveniently and the measurement result can be more accurate.