Tissue Bonding Control via Indirect Temperature Estimation
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Solution Overview
Problem
Conventional living tissue bonding systems face challenges in accurately controlling energy application based on the temperature of the living tissue during treatment, often relying on the temperature of the energy output section instead, which can lead to inadequate treatment results.
Innovation Solution
A system that includes a clamping section, a power source for generating treatment energy, an output section for applying energy to the tissue, a temperature measuring section for the output section, and calculating sections to estimate the tissue temperature from the temperature difference between the output section and the tissue, allowing for precise control of the power source based on the estimated tissue temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the temperature of the energy output section is used for control, then the measurement is easy to obtain, but the treatment accuracy deteriorates because it does not reflect the actual tissue temperature
Solution Approach 1:
The patent introduces an intermediary calculation model that uses the easily measurable output section temperature as a proxy to estimate the difficult-to-measure tissue temperature. The control section calculates tissue temperature based on the temperature difference between the output section and tissue, using stored correlation data. This intermediary approach allows the system to maintain ease of measurement while achieving accurate tissue temperature control.
2Measurement precision
If the tissue temperature is directly measured, then the treatment accuracy is improved, but the device complexity increases due to the need for additional measurement systems
Solution Approach 1:
The patent creates a virtual copy of the tissue temperature measurement function by calculating tissue temperature from output section temperature data. Instead of implementing a complex physical measurement system in the tissue, the system uses a calculation model that replicates the temperature measurement function through mathematical relationships and stored correlation data, thereby avoiding additional hardware complexity.
3Ease of operation
If the energy application is controlled based on output section temperature, then the system is simple to operate, but the treatment result deteriorates due to inaccurate tissue temperature control
Solution Approach 1:
The patent implements a feedback control mechanism where the control section continuously monitors the output section temperature, calculates the corresponding tissue temperature using the temperature difference model, and adjusts the energy application accordingly. This feedback loop ensures that the treatment energy is controlled based on the estimated actual tissue temperature rather than just the output section temperature, thereby improving treatment reliability while maintaining operational simplicity.
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 more accurate and effective treatment by controlling energy application based on the actual tissue temperature, preventing overheating and ensuring optimal bonding results.
Implementation Method 1
a temperature measuring section configured to measure a temperature of the output section
Implementation Method 2
a first calculating section configured to use a table or an equation stored beforehand and indicating a correlation between a temperature difference between the temperature of the output section measured in the temperature measuring section and a temperature of the living tissue clamped by the clamping section and an output value outputted from the power source to the clamping section
Implementation Method 3
a power source configured to generate treatment energy for bonding the living tissue clamped by the clamping section
Data Source
AI summary
A living tissue bonding system includes a treatment instrument having a heating element which applies thermal energy to living tissue, an element temperature measuring section configured to measure an element temperature T1 of the heating element, a power source configured to generate power, a first calculating section configured to estimate a temperature difference ΔT between the element temperature T1 and a temperature T2 of the living tissue using a table or an equation stored beforehand in order to estimate the temperature difference ΔT based on an output value of the power source, a second calculating section configured to estimate the tissue temperature T2 from the element temperature T1 and the temperature difference ΔT estimated by the first calculating section, and a control section configured to control the power source based on the tissue temperature T2 estimated by the second calculating section.