Ring-Type Blood Pressure Cuff With Coil Spring
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Solution Overview
Problem
Existing blood pressure measurement cuffs are cumbersome and inconvenient, particularly for frequent or long-term use by hypertensive patients, as they require manual wrapping and air pressure management, which can be complicated and uncomfortable.
Innovation Solution
A flexible ring-type cuff made of rubber with a built-in resilient coil spring, allowing for easy wear around the wrist or ankle, featuring a pressure sensor, transmission circuit, and power switch activated by tension force, enabling wireless or wired data transmission and simple operation with minimal power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional tube-type cuff is used for blood pressure measurement, then accurate blood pressure measurement can be achieved, but the device becomes cumbersome and inconvenient for frequent or long-term use
Solution Approach 1:
The cuff is divided into modular components: a wearable ring portion and a separate measurement unit. This segmentation allows the cuff to be easily worn and removed without complex operations, while the measurement unit handles the technical blood pressure measurement functions separately.
Solution Approach 2:
The cuff incorporates a power switch that is automatically activated by the tension force when the ring is worn, eliminating the need for manual operation. The system self-regulates and activates measurement functions through the mechanical action of wearing the cuff itself.
2Measurement precision
If manual wrapping and air pressure management are required for blood pressure measurement, then measurement accuracy can be maintained, but the procedure becomes complicated and uncomfortable for frequent use
Solution Approach 1:
The traditional mechanical system of manual wrapping and air pressure injection is replaced with an electronic pressure sensor system. The pressure sensor directly measures blood pressure without requiring manual air pressure management, simplifying the operation while maintaining accuracy.
Solution Approach 2:
The cuff automatically activates the power switch and measurement functions through the tension force generated by wearing the ring, eliminating the need for manual operation of wrapping or pressure control.
3Ease of operation
If a flexible ring-type cuff with built-in coil spring is used, then ease of wear and comfort are improved, but the device structure becomes more complex
Solution Approach 1:
The coil spring mechanism is integrated directly into the ring structure, merging the elastic support function with the wearable component. This integration allows the ring to maintain its shape and provide consistent tension without requiring separate mechanical assemblies.
Solution Approach 2:
The coil spring provides variable tension force that adapts to different wrist sizes and wearing conditions. This parameter change allows the ring to maintain optimal contact pressure for measurement while remaining comfortable for extended wear.
4Productivity
If frequent blood pressure measurement is performed for hypertensive patients, then health monitoring effectiveness is improved, but operational burden and discomfort increase
Solution Approach 1:
The cuff automatically activates measurement functions through the tension force of wearing the ring, eliminating the need for manual operation. This self-activating mechanism encourages frequent use by hypertensive patients without adding operational burden.
Solution Approach 2:
The separation of the wearable ring from the measurement unit allows patients to wear the ring continuously for monitoring, while the measurement unit can be connected periodically or continuously without requiring manual manipulation of the entire system.
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 ring-type cuff provides a convenient, durable, and comfortable means for frequent blood pressure measurement with reduced operational complexity and pain, allowing for continuous monitoring with minimal impact on daily activities while maintaining accurate data transmission and analysis.
Implementation Method 1
a resilient coil spring (2) built-in inside the circular rubber ring (1) in the range of length of the circular rubber ring (1) to obtain a predetermined flexibility, to suppress excessive stretching, to strengthen durability, and to maintain resilience
Implementation Method 2
the first cap (3c) is connected to the resilient coil spring (2) through a tension rod (2d) that enables the power switch (sw) to be on by a tension force of the resilient coil spring (2)
Data Source
AI summary
The present invention relates to a ring-type cuff for blood pressure manometer, wherein the cuff (C) comprises: a circular rubber ring (1) wearable on a wrist or an ankle; a resilient coil spring (2) built-in inside the tubular rubber ring (1) in the range of length of the rubber ring to obtain a predetermined flexibility, to suppress excessive stretching, to strengthen durability, and to maintain resilience; and a measurement portion (3) comprising a pressure sensor (S) for measuring blood pressure, a transmission circuit (IC) for transmitting measurement data to the outside, a power source (v), a power switch (sw), and a pilot lamp (LED). The ring-type cuff (C) is worn on the wrist or the ankle at ordinary times; when measuring blood pressure, the ring-type cuff (C) is placed on a measurement site to be fixed by a self-elastic supporting force, blood pressure is measured by the pressure sensor (S) of the measurement portion (3) and the pilot lamp (LED) is simultaneously lighted, the measured data is wired and wirelessly transferred to an external sphygmomanometer by the transmission circuit (IC) to be analyzed, and the analyzed result is displayed on a display portion through a letter or a figure; and the pilot lamp is also turned off if the ring-type cuff (C) descends to the wrist after measurement.