Sphygmomanometer Cuff Intermediate Layer Prevents Adhesion
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Solution Overview
Problem
Existing sphygmomanometer cuffs with flat, one-piece sealed rubber structures experience slow inflation and deflation due to adhesion between rubber layers, leading to reduced detection efficiency and comfort during blood pressure measurements.
Innovation Solution
A sphygmomanometer cuff design featuring a top layer, bottom layer, and intermediate layer with a rough surface, where the intermediate layer is between the top and bottom layers, and a retaining plate with an arcuate surface and securing feet, allowing for fast inflation and deflation through air channels and passages, preventing adhesion and enhancing skin respiration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flat one-piece sealed rubber structure is used for the air bag, then the structure is simple and easy to manufacture, but the inflation and deflation speed is slow due to adhesion between rubber layers
Solution Approach 1:
The air bag is divided into multiple layers (first rubber layer, second rubber layer) with a non-rubber intermediate layer between them. This segmentation prevents the rubber layers from adhering to each other, enabling faster inflation and deflation while maintaining structural integrity and ease of manufacture.
2Reliability
If rubber layers are pressed tightly together, then the sealing is improved, but the air permeability is reduced and comfort is lowered
Solution Approach 1:
A non-rubber intermediate layer is introduced between the first and second rubber layers. This intermediate layer acts as a mediator that prevents direct adhesion between rubber layers, maintaining sealing performance while improving air permeability and comfort during measurement.
3Duration of action of stationary object
If the cuff is worn for a long time, then continuous monitoring is achieved, but skin respiration is restricted causing discomfort
Solution Approach 1:
The intermediate layer is designed with porous or breathable characteristics, allowing air permeability that facilitates skin respiration. This enables the cuff to be worn for extended periods without restricting skin breathing, thus maintaining comfort during continuous monitoring.
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
Facilitates rapid inflation and deflation of the air bag, improves measurement speed and precision, and enhances comfort by preventing adhesion between the air bag layers and allowing skin respiration, thus addressing the issues of slow inflation and deflation and discomfort in existing cuffs.
Implementation Method 1
the intermediate layer has a rough surface; characterized in that the retaining plate is suitable for securing a sphygmomanometer to the cuff body
Implementation Method 2
a bottom surface of the retaining plate is arcuate, the bottom surface recesses toward a top surface of the retaining plate, a plurality of securing feet are formed intermittently on a bottom of the retaining plate and intermittently contact the outer surface of the top layer of the air bag, and a plurality of interspaces are formed between any two of the securing feet
Data Source
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AI summary
The present invention relates to a sphygmomanometer cuff, a sphygmomanometer, and a method for using the sphygmomanometer cuff. The sphygmomanometer cuff includes a cuff body for wrapping around a predetermined portion of a body. The cuff body includes an air bag, a retaining plate and an air tube. The air bag includes a top layer and a bottom layer. A sealed cavity is defined between the top layer and the bottom layer. The retaining plate is attached to an outer surface of the top layer of the air bag. The air tube extends through the retaining plate and connects with the sealed cavity of the air bag. An intermediate layer is disposed between the top layer and the bottom layer and separates the top layer and the bottom layer, and the intermediate layer has a rough surface.