Optical Measurement System for Non-Invasive Tissue Pressure Analysis
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Solution Overview
Problem
Current methods for measuring intracranial and muscular pressure parameters are invasive, complex, and often require multiple systems for different parameters, making them uncomfortable and risky for patients, while non-invasive methods can be cumbersome and lack precision.
Innovation Solution
A non-invasive measuring system using an optical unit with multiple wavelengths to determine pressure parameters by analyzing light absorption and pulsatility in body tissues, allowing for simultaneous measurement of various parameters without additional pressure devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If invasive measurement methods are used to determine pressure parameters in body tissue, then measurement precision is improved, but patient safety and comfort deteriorate due to bleeding risks and complex procedures
Solution Approach 1:
The patent replaces invasive mechanical pressure probes with a non-invasive optical measurement system. The system uses light absorption measurements at multiple wavelengths to determine pressure parameters in body tissue, eliminating the need for physical insertion of measuring devices into the patient's body while maintaining measurement capability through optical detection of tissue properties
Solution Approach 2:
The patent introduces light as an intermediary substance to transfer measurement information from the body tissue without direct contact. By measuring light absorption characteristics of tissue at different wavelengths, the system indirectly determines pressure parameters, serving as a safe mediator between the measurement device and the patient's body
2Adaptability or versatility
If multiple separate measuring systems are used to determine different body tissue parameters, then measurement completeness is improved, but device complexity increases
Solution Approach 1:
The patent creates a universal optical measurement device capable of determining multiple different pressure parameters in body tissue simultaneously. By using light absorption measurements at multiple wavelengths and applying appropriate evaluation algorithms, the single device can measure various physiological parameters without requiring separate specialized systems for each parameter type
Solution Approach 2:
The patent combines multiple measurement capabilities into a single integrated optical system. Instead of using separate devices for different pressure parameters, the system merges these functions by using a common light source, detector, and processing unit that can evaluate different wavelengths to extract multiple physiological parameters from the same measurement session
3Ease of operation
If non-invasive optical measurement methods are used to determine pressure parameters, then patient comfort is improved, but measurement precision deteriorates due to method limitations
Solution Approach 1:
The patent improves measurement precision by utilizing parameter changes in light absorption at multiple different wavelengths. By measuring absorption characteristics across the visible and near-infrared spectrum and analyzing how these parameters change with pressure variations, the system achieves accurate pressure determination while maintaining non-invasive patient comfort
Solution Approach 2:
The patent replaces direct mechanical pressure sensing with optical detection methods. Instead of using physical pressure sensors that require tissue penetration, the system substitutes mechanical measurement with optical absorption measurements, achieving both patient comfort and sufficient measurement precision through sophisticated light-tissue interaction analysis
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 easy, quick, and comfortable determination of multiple body tissue parameters, including intracranial and compartmental pressures, using a simple absorption measurement and transformation algorithm, reducing the need for multiple systems and invasive procedures.
Implementation Method 1
at least one of the wavelengths of the light waves is in the range of absorption of a constituent of the body tissue
Implementation Method 2
comprises at least one optical fiber between the optical unit and the measuring device for transmitting light waves with different wavelengths
Data Source
Figure 1~3
Figure 2
AI summary
A measurement system and method for measuring at least one parameter in a body tissue comprise at least one measurement device to be applied to the body, an optical unit for emitting light waves, wherein at least one wavelength of the light waves lies in the region of the absorption of a body parameter, at least one light guide between the optical unit and the measurement device in order to transmit light waves, and an evaluation unit for evaluating measurement waves. Light waves emitted by the optical unit can be beamed into an optical measurement volume in the body tissue by means of the measurement device, and measurement waves received by the measurement device from the measurement volume can be transmitted from the body tissue to the evaluation unit. The evaluation unit comprises a transformation algorithm, which transforms pulsatility of a body parameter measured in the measurement volume into a parameter of the pressure in the body tissue, wherein the body parameter is measured by determining the absorption of the light waves. DRAWING: No translation necessary.