Resonating Sensor Gel Protection Against Tissue Deposition
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Solution Overview
Problem
Resonating sensors implanted in living bodies or used in measurement environments face deposition of tissue or biological materials, which alter resonance characteristics and affect accuracy.
Innovation Solution
The use of a protective gel layer or medium, such as a non-compressible gel, to cover and embed the vibratable parts of the sensors, preventing deposition of extraneous substances while maintaining minimal attenuation of the physical variable being measured.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resonating sensors are implanted in living bodies or used in measurement environments, then the sensors can measure physical parameters, but deposition of tissue or biological materials occurs on the sensor surfaces, altering resonance characteristics and affecting measurement accuracy
Solution Approach 1:
A protective gel layer is introduced as an intermediary substance between the resonating sensor and the biological environment. This gel layer acts as a barrier that prevents deposition of tissue or biological materials on the sensor surface while allowing the sensor to continue measuring physical parameters such as pressure or temperature. The gel is applied directly to the sensor surface or embedded within the sensor structure, maintaining the resonance characteristics necessary for accurate measurement.
2Reliability
If a protective coating is applied to prevent deposition, then measurement accuracy is maintained, but the complexity of the sensor device increases
Solution Approach 1:
A thin gel layer is applied to the sensor surface to provide protection against deposition. This thin film approach maintains simplicity by using a minimal protective layer that does not significantly increase device complexity. The gel can be applied as a coating or embedded within the sensor structure, providing protection while maintaining a relatively simple overall device design.
3Measurement precision
If the sensor surface is exposed to the measurement environment, then the sensor can detect physical parameters directly, but extraneous substances deposit on the sensor, changing its resonance frequency
Solution Approach 1:
The gel layer serves as a stable intermediary that separates the sensor surface from the variable biological environment. This maintains the stability of the sensor surface composition by preventing direct contact with extraneous materials, while still allowing the sensor to detect changes in resonance frequency in response to physical parameter changes such as pressure or temperature variations.
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 protective gel layer effectively prevents the deposition of tissues or materials on the sensor surfaces, maintaining the accuracy and stability of the resonance frequency measurements.
Implementation Method 1
The protective gel layer or medium, such as a non-compressible gel, to cover and embed the vibratable parts of the sensors, preventing deposition of extraneous substances
Implementation Method 2
at least one vibratable member having a resonance frequency that varies as a function of a physical variable in a measurement environment
Data Source
AI summary
A protected resonating sensor may include at least one resonating sensor unit, each sensor unit has one or more vibratable members. The protected sensor includes at least one body of gel for protecting the vibratable member(s) of the sensor. The gel may be disposed on or attached to the sensor unit(s) covering the vibratable member(s) of the sensor unit(s). The gel may also be disposed in an open housing including one or more sensor units, and may cover vibratable members of different sensor units. The sensor unit may be any resonating sensor unit having a resonance frequency that depends on the value of a physical variable in a measurement environment. The protected sensor may also be attached to or included in or formed as part of any suitable device or sensor anchoring device and may also be implanted or inserted into a body or an organism. Methods are described for constructing the gel-protected sensor. The gel may have modified surface properties and may contain one or more drugs or therapeutic agents or other releasable substances. The gel may be formulated to retard or reduce diffusion of substances from the measurement environment into the gel and their deposition on the vibratable member(s).