Reversible Air Pump Sphygmomanometer Miniaturization
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Solution Overview
Problem
Existing electronic sphygmomanometers are bulky and difficult to miniaturize due to their mechanical components, such as electromagnetic valves and quick bleeding valves, which hinder portability and accuracy in blood pressure measurement, and often rely on standalone displays and buttons that increase size and complexity.
Innovation Solution
A Bluetooth-enabled electronic sphygmomanometer using a reversible air pump that inflates and deflates via motor rotation direction changes, eliminating the need for electromagnetic valves and integrating measurement controls and displays on a smart terminal for wireless operation, allowing for a more compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electromagnetic valve and quick bleeding valve are used for cuff inflation and deflation control, then blood pressure measurement function is achieved, but device structure becomes complicated and volume increases
Solution Approach 1:
The patent removes the quick bleeding valve from the traditional sphygmomanometer system. Instead of using a separate quick bleeding valve for rapid deflation, the system relies on the reversible air pump to control both inflation and deflation processes, simplifying the mechanical structure while maintaining measurement functionality
Solution Approach 2:
The reversible air pump serves dual functions: it acts as both the inflation pump and the deflation mechanism. By changing the rotation direction of the motor, the same pump can either inflate or deflate the cuff, eliminating the need for separate electromagnetic valves and quick bleeding valves, thus reducing device complexity and component count
2Ease of operation
If standalone display and function buttons are integrated into the sphygmomanometer body, then operation and data display are convenient, but device volume and weight increase
Solution Approach 1:
The patent extracts the display and control functions from the main device body and relocates them to a smartphone application. The sphygmomanometer now only retains essential components (reversible air pump, pressure sensor, control unit), while the display, data processing, and additional features are handled by the smartphone, significantly reducing device volume and weight
Solution Approach 2:
The smartphone acts as an intermediary between the user and the sphygmomanometer. Instead of having a built-in display and buttons, the device communicates with the smartphone via Bluetooth, and the smartphone application provides the user interface for operation and data display, effectively using the smartphone as a mediator to reduce the complexity of the medical device
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
This design achieves microminiaturization and improved portability while ensuring accurate blood pressure measurement through the oscillometric method, reducing manufacturing costs and simplifying the internal structure by eliminating unnecessary components.
Implementation Method 1
The reversible air pump is configured to change between a first operating condition in which the motor is driven to rotate in a forward direction so it inflates the cuff and a second operating condition in which the motor is driven to rotate in a reverse direction so it deflates the cuff
Implementation Method 2
the present application relates to an electronic sphygmomanometer using the MWI (measuring while inflating) method
Data Source
AI summary
The present application relates to a sphygmomanometer comprising a main body and a cuff. As to its mechanical structure, the main body primarily comprises a casing, a circuit board, a reversible air pump, a battery, and a switch installed thereon. As to hardware, the sphygmomanometer integrates thereon a main controlling unit, a driving unit, a detecting unit, and a charging unit, and uses a Bluetooth chip as its controlling chip. The inventive sphygmomanometer is based on the MWI (measuring while inflating) method, and all its operating units except for the switch, as well as a displaying unit, related to blood pressure measurement are provided on a smart terminal bound with the sphygmomanometer by means of wireless communication. In addition, the main body and the cuff are both provided with compact arrangements of internal structures, so as to realize miniaturization and portability of sphygmomanometers while ensuring accurate blood pressure measurement.