HIFU Output Control Using Skin Temperature Feedback
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Solution Overview
Problem
Existing ultrasound output devices transmit a uniform amount of ultrasound to skin targets, leading to burns when the amount is excessive or fail to induce coagulation necrosis when insufficient, due to varying skin conditions.
Innovation Solution
A temperature measurement-based ultrasound output device that adjusts ultrasound transmission based on real-time temperature measurements, using a transducer controlled by a controller to operate or stop based on set reference temperature values, ensuring appropriate ultrasound delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the same amount of ultrasound is transmitted to each target part of the skin, then the device structure is simple and operation is easy, but burns occur when the amount is excessive or coagulation necrosis cannot be induced when the amount is insufficient
Solution Approach 1:
The patent implements a feedback control system where a temperature sensor continuously measures the temperature at the target part of the skin during ultrasound treatment. The controller receives this temperature data and dynamically adjusts the ultrasound transmission amount accordingly, increasing transmission when temperature is below the reference value and decreasing or stopping transmission when the reference temperature is reached, thereby preventing both burns and insufficient treatment
Solution Approach 2:
The patent changes the operational parameters of the ultrasound device by introducing temperature-based dynamic control. Instead of transmitting a fixed amount of ultrasound, the system varies the ultrasound transmission amount based on real-time temperature measurements, adjusting key parameters such as power output and transmission duration to match the actual skin condition and treatment requirements
2Reliability
If temperature measurement and dynamic control are implemented, then appropriate ultrasound amount is transmitted preventing burns and ensuring effective treatment, but device structure and control system become more complex
Solution Approach 1:
The patent applies multi-functionality by integrating the temperature sensor into the existing ultrasound device structure, allowing the same device to perform both ultrasound transmission and temperature monitoring functions. The controller serves multiple purposes: managing ultrasound transmission, receiving temperature data, processing the data, and making real-time adjustments, thereby reducing the need for separate dedicated components and minimizing overall system complexity
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
Prevents skin burns and ensures effective coagulation necrosis by dynamically controlling ultrasound intensity and duration based on skin temperature, enhancing treatment efficacy.
Implementation Method 1
a temperature sensor that is provided in the head part and measures a temperature at the target part
Implementation Method 2
a transducer that is provided in the cartridge and outputs a high-intensity focused ultrasound toward the target part
Implementation Method 3
a controller that operates or stops the transducer based on temperature data measured by the temperature sensor
Data Source
AI summary
The present invention relates to a temperature measurement-based high-intensity focused ultrasound output device comprising: a cartridge which has a head part to be brought into contact with a target region of the skin; a transducer which is provided in the cartridge to output ultrasound toward the target region; a temperature sensor which is provided in the head part to measure the temperature of the target region; and a controller which operates or stops the transducer on the basis of temperature data measured by the temperature sensor.