Interchangeable Test Heads for Biological Soft Tissue Analysis
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Solution Overview
Problem
Existing mechanical property testers for biological soft tissues are limited in their ability to test various objects and functions, leading to high costs due to the need for multiple specialized instruments.
Innovation Solution
A mechanical property tester with interchangeable test heads, fixtures, displacement sensors, and pressure sensors that can be selectively mounted, allowing for a range of tests to be performed on a single device, including compression, tension, and shearing tests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple specialized test instruments are used to test different biological soft tissues and functions, then the testing capability and coverage are improved, but the cost and device complexity increase significantly
Solution Approach 1:
The patent implements a universal test instrument platform that can perform multiple testing functions (compression, tension, shearing tests) on various biological soft tissues through interchangeable test heads and fixtures. The frame body, loading device, and sensor system remain constant while only the test heads and fixtures need to be changed for different testing requirements, achieving multi-functionality without proportionally increasing overall system complexity
Solution Approach 2:
The test instrument is divided into modular components: a fixed frame body, interchangeable test heads, replaceable fixtures, and independent sensor systems. This segmentation allows each component to be optimized independently and enables flexible reconfiguration for different testing scenarios, improving adaptability while keeping the overall device complexity manageable through standardized interfaces
2Adaptability or versatility
If multiple specialized test instruments are used to test different biological soft tissues and functions, then the testing scope is expanded, but the cost increases due to purchasing and maintaining multiple devices
Solution Approach 1:
The patent creates a single test instrument that replaces multiple specialized devices by enabling compression, tension, and shearing tests on various biological soft tissues through the interchangeable test head and fixture system. This eliminates the need to purchase and maintain separate instruments for each testing type, significantly reducing overall cost while expanding testing scope
Solution Approach 2:
The patent merges the functionality of multiple specialized test instruments into a single integrated platform. By combining the loading mechanism, measurement system, and interchangeable test components into one device, it achieves the testing capabilities of multiple instruments while consolidating the cost into a single investment
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 testing of diverse biological soft tissues with multiple functions using a single device, significantly reducing costs and enhancing applicability.
Implementation Method 1
at least two set of mutually replaceable pressure sensors for detecting the value of pressure on the test object applied by the test heads
Implementation Method 2
at least two set of mutually replaceable displacement sensors for detecting the movement of the test heads
Data Source
AI summary
A mechanical property tester of biological soft tissue includes a frame body having a workbench, a test head holder disposed on the frame body, a test object fixture base which is disposed on the workbench and located below the test head holder, an acquisition device, and a computer.