Pivoting Optical Sensor for Blood Oxygen Measurement
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Solution Overview
Problem
Conventional optical measurement devices struggle to effectively measure blood oxygen levels in thicker tissues, such as the forehead and limbs, as penetration measurements become too weak beyond 3-4 centimeters, requiring both reflection and penetration detectors for accurate readings, which is inconvenient in clinical settings.
Innovation Solution
An optical sensing device with a transformation part that pivots to switch between reflection and penetration modes, allowing the light processing unit to either emit or receive light signals for reflected or penetrating measurements, enabling accurate blood oxygen monitoring in various tissue thicknesses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If penetration measurement is used for thick tissues (forehead and limbs), then blood oxygen measurement capability is improved, but measurement signal strength deteriorates (signal becomes too weak beyond 3-4 cm)
Solution Approach 1:
The optical sensing device integrates both penetration measurement mode (for thin tissues like fingers) and reflection measurement mode (for thick tissues like forehead and limbs) within a single device. The transformation part enables the light processing unit to switch between these two measurement modes, allowing the device to universally measure blood oxygen in various tissue types with different thicknesses, resolving the contradiction between adaptability and measurement reliability.
2Measurement precision
If both reflection and penetration detectors are provided for measuring blood oxygen in fingers and limbs, then measurement accuracy is improved, but device complexity and ease of operation deteriorate (inconvenient to use)
Solution Approach 1:
The transformation part is designed to be movable, enabling dynamic switching between penetration measurement mode and reflection measurement mode. This dynamic configuration allows the device to adapt to different measurement scenarios (fingers vs. forehead/limbs) without requiring the user to manually switch between separate devices or complex settings, thereby maintaining measurement precision while significantly improving ease of operation.
Solution Approach 2:
The patent combines both penetration measurement functionality and reflection measurement functionality into a single integrated optical sensing device. By merging these two previously separate measurement capabilities into one device with a transformable structure, the invention eliminates the need for users to handle multiple detectors, thus improving operational convenience while maintaining comprehensive measurement accuracy across different tissue types.
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
Enables convenient and accurate measurement of blood oxygen levels in both thin and thick tissues by seamlessly transitioning between reflection and penetration modes, improving clinical usability and measurement reliability.
Implementation Method 1
the light emitting unit emits the light signal, and the light processing unit receives a penetrating light signal corresponding to the light signal
Implementation Method 2
the light emitting unit transmits the light signal, and the light receiving unit receives a reflected light signal corresponding to the light signal
Data Source
AI summary
The optical sensing device is provided for receiving and transmitting a light signal. A light working area is defined according to a measurement range of the light signal. The optical sensing device includes a body, a transformation part and a signal unit. A light emitting unit and a light receiving unit are disposed at an end of the body, and the light emitting unit and the light receiving unit face the light working area. The transformation part pivots on the body. A light processing unit is disposed on the transformation part, and the light processing unit is capable of locating in the light working area for transmitting or receiving the light signal. The signal unit is configured for transmitting and processing the light signal.