Soft Tissue Impulse Measurement with Pre-Pressure Calibration
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Solution Overview
Problem
Existing methods for measuring biomechanical parameters of soft biological tissues lack the ability to adjust mechanical impulses individually, leading to inaccurate results due to insufficient tissue recovery and inappropriate pre-pressure, impulse parameters, and time intervals.
Innovation Solution
A method and system that includes a pre-measurement process to determine suitable pre-pressure, impulse parameters, and time intervals by generating multiple impulses, analyzing tissue responses, and adjusting these parameters if necessary to ensure similarity and adequacy for accurate measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional impulse applying devices are used without adjustable parameters, then the device structure remains simple, but the measurement accuracy deteriorates due to insufficient tissue recovery and inappropriate pre-pressure
Solution Approach 1:
The device enables dynamic adjustment of impulse parameters (amplitude, duration, frequency) and pre-pressure levels to match different tissue types and measurement requirements. The actuator can vary impulse characteristics in real-time, transforming a static device into an adaptive system that optimizes measurement conditions for each specific tissue being evaluated.
Solution Approach 2:
The invention implements variable parameters including adjustable pre-pressure magnitude, impulse amplitude, impulse duration, and time intervals between impulses. These parameters can be modified based on tissue properties and measurement goals, allowing the system to adapt to different biological tissues and measurement scenarios while maintaining measurement accuracy.
2Reliability
If multiple impulses are applied without parameter adjustment, then measurement time is reduced, but measurement reliability deteriorates due to tissue recovery insufficiency
Solution Approach 1:
The system monitors tissue response to each impulse and uses this feedback to determine whether the tissue has recovered sufficiently before applying the next impulse. Based on the measured response characteristics, the control system dynamically adjusts the timing and parameters of subsequent impulses, ensuring reliable measurements while minimizing total measurement time through optimized impulse sequences.
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
Improves the accuracy and reliability of biomechanical parameter measurements by ensuring tissue recovery and consistent tissue contact, reducing measurement errors and variability.
Implementation Method 1
If the tissue under assessment has any elastic properties, the soft biological tissue responds, after a quick release (end of actuation), to the stimulus with a damped natural oscillation
Implementation Method 2
the impulse applying device applying a pre-pressure to the surface of the tissue via the end portion in contact with the surface of the tissue
Data Source
AI summary
A method of measuring a biomechanical parameter of soft biological tissue is described. The method includes a pre-measurement process wherein an impulse applying device applies a pre-pressure to a surface of the tissue via an end portion contacting the tissue surface. While maintaining the pre-pressure, the device generates at least two impulses separated by a time interval, each impulse causing the end portion to impart to the tissue an action with certain parameters, each action inducing a response of the tissue. A value of a biomechanical parameter of the tissue is determined from each response induced. A determination is made as to whether the determined values of the biomechanical parameter are sufficiently similar to each other to indicate that the pre-pressure, the parameters of the end portion actions and the time interval are acceptable for use in a measurement process to be conducted on the surface of the tissue.