Adjustable Frequency Microwave Induction Heating for Tissue Coagulation
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Solution Overview
Problem
Conventional microwave surgical devices face challenges in achieving precise heating due to fixed frequency microwave output, leading to inefficient heating processes and potential tissue damage from excessive heating or carbonization.
Innovation Solution
A microwave induction heating device with adjustable frequency capabilities, allowing for stepwise or continuous frequency changes based on the object's type and state, using a configuration that includes a microwave generation unit, amplification unit, and control means to adjust frequency and output in real-time, with temperature and voltage standing wave ratio monitoring for optimal heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the microwave output is increased to speed up heating, then the heating speed improves, but the risk of excessive heating and tissue damage increases
Solution Approach 1:
The patent applies dynamics by making the microwave frequency adjustable rather than fixed. The system dynamically changes the frequency based on real-time temperature feedback from the treatment site, allowing optimal heating efficiency while preventing tissue damage. This resolves the contradiction by enabling the system to adapt the microwave output to actual heating needs rather than using a static high power setting.
Solution Approach 2:
The patent implements feedback control by monitoring temperature at the treatment site and using this information to adjust the microwave frequency. The temperature detection means provides continuous feedback to the control unit, which then modifies the microwave oscillation frequency to maintain optimal heating conditions, preventing both insufficient and excessive heating.
2Device complexity
If the microwave frequency is fixed, then the device structure is simple, but the heating precision for different tissue types deteriorates
Solution Approach 1:
The patent applies parameter changes by making the microwave frequency variable rather than fixed. The control unit adjusts the frequency parameter based on the specific tissue type and heating requirements. This allows the same device structure to achieve high heating precision across different applications by changing the operating parameter (frequency) rather than requiring complex hardware variations.
3Productivity
If the microwave output is increased to compensate for slow heating, then the heating efficiency improves, but the risk of carbonization and adverse effects increases
Solution Approach 1:
The system dynamically adjusts microwave frequency based on real-time temperature feedback, preventing the conditions that lead to carbonization. By maintaining optimal frequency settings rather than using excessively high power, the system achieves efficient heating without creating the thermal gradients that cause carbonization and tissue damage.
Solution Approach 2:
The temperature detection and feedback control mechanism prevents carbonization by continuously monitoring heating progress and adjusting frequency to maintain safe temperature rises. The feedback loop ensures that the microwave output is optimized for heating efficiency while staying below the threshold that would cause carbonization.
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 precise and effective heating with reduced risk of tissue damage, allowing for broader and faster coagulation in medical applications by continuously adjusting microwave frequency and output according to detected conditions.
Implementation Method 1
heating an object by microwave induction heating oscillated from the microwave oscillation means
Implementation Method 2
the microwave generated in the magnetron, in a contact state... heating the carcinoma tissue so as to coagulate the tissue
Data Source
AI summary
A microwave induction heating device includes microwave oscillation means (100) for oscillating a microwave so that an object is heated by the induction heating of the microwave oscillated from the microwave oscillation means (100). The microwave oscillation means (100) is configured in such a manner that the frequency of the microwave oscillated from the microwave oscillation means (100) can be changed.