Adaptive Finger Size Ring for Blood Oxygen Saturation Measurement
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Solution Overview
Problem
Existing blood oxygen saturation measurement instruments are uncomfortable to wear for long periods due to radial pressure causing poor blood flow and swelling, and they often fall off due to poor fit, leading to inaccurate measurements.
Innovation Solution
An adaptive finger size ring with a telescopic elastic device that adjusts to fit different finger shapes and sizes, ensuring close contact between the ring bodies and the finger while minimizing pressure, thus enhancing comfort and measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an elastic finger sleeve or locking strap is used to adjust tightness, then the instrument is less likely to fall off, but radial pressure is exerted around the finger causing poor blood flow and swelling
Solution Approach 1:
The ring is divided into two separate ring bodies (first ring body and second ring body) connected by elastic devices, allowing the clamping force to be applied locally at the clamping position rather than uniformly around the entire finger, thus reducing radial pressure while maintaining stability
Solution Approach 2:
The clamping position is designed to concentrate the clamping force locally between the first ring body and second ring body, while the elastic devices provide flexibility elsewhere, creating localized pressure only where needed for stability without causing overall radial pressure on the finger
2Object-affected harmful factors
If the ring is made loose to avoid pressure, then wearing comfort is improved, but the photoelectric sensor does not contact the skin well causing inaccurate measurement
Solution Approach 1:
The design creates different local qualities: the clamping position maintains firm contact for accurate photoelectric measurement, while the elastic devices provide a loose, comfortable fit elsewhere, ensuring both measurement precision and wearing comfort are achieved simultaneously
Solution Approach 2:
By separating the ring into segmented components (ring bodies and elastic devices), the patent allows different sections to serve different functions: firm contact where measurement is needed, and flexible comfort where measurement is not required
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 adaptive ring design prevents swelling and improves wearing comfort while ensuring accurate blood oxygen saturation measurements by maintaining close contact between the photoelectric detection device and the finger.
Implementation Method 1
the elastic device is telescopic, and has a tendency to shorten in length, so that the clamping position is reduced in size
Data Source
AI summary
The present application discloses an adaptive finger size ring. The adaptive finger size ring in the present application includes: a first ring body, a second ring body, and two elastic devices. There is a clamping position between the first ring body and the second ring body, and the clamping position is used to clamp a finger. One end of the elastic device is connected to the first ring body, the other end is connected to the second ring body, and the two elastic devices are respectively located on two sides of the clamping position. The elastic device, the first ring body, and the second ring body form an annular shape. The elastic device is telescopic and has a tendency to shorten in length, so that the first ring body and the second ring body are in close contact with skin of the finger. Thus, a swelling feeling caused due to poor blood flow when the ring is worn for a long time can be avoided, and wearing comfort is improved.