Ultrasonic Catheter Electrical Feedback Control
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Solution Overview
Problem
Ultrasonic treatment devices lack real-time control and feedback on the type of material encountered by the distal end of the catheter and the vascular pathway during procedures, leading to unstable operation and potential equipment damage.
Innovation Solution
Monitoring electrical characteristics such as voltage, current, and Power Factor of the ultrasonic transducer to determine the material type and vascular pathway, allowing for real-time adjustment of the ultrasound signal frequency and waveform to maintain stable operation, with optional display for physician intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If real-time monitoring and control of ultrasonic transducer electrical characteristics is implemented, then operational stability and equipment protection are improved, but device complexity increases
Solution Approach 1:
The system continuously monitors electrical characteristics (voltage, current, power factor) of the ultrasonic transducer and uses this feedback to detect changes in operational state. When material type or vascular pathway conditions change, the system adjusts the ultrasound signal parameters in real-time to maintain stable operation and prevent equipment damage.
Solution Approach 2:
The patent replaces mechanical sensing methods with electrical field-based monitoring. By measuring electrical characteristics (voltage, current, power factor) of the ultrasonic transducer, the system indirectly detects material type and vascular pathway conditions without requiring additional mechanical sensors at the catheter tip.
2Measurement precision
If electrical characteristic monitoring is added to determine material type and vascular pathway, then measurement capability is improved, but device complexity increases
Solution Approach 1:
The system replaces mechanical sensing with electrical field-based monitoring. By measuring electrical characteristics (voltage, current, power factor) of the ultrasonic transducer, the system indirectly detects material type and vascular pathway conditions without requiring additional mechanical sensors at the catheter tip.
Solution Approach 2:
The electrical characteristics of the ultrasonic transducer serve as an intermediary parameter. Instead of directly measuring material properties, the system uses changes in voltage, current, and power factor as indirect indicators of material type and vascular pathway conditions, enabling measurement without direct contact sensors.
3Reliability
If real-time adjustment of ultrasound signal parameters is implemented, then operational stability is improved, but control system complexity increases
Solution Approach 1:
The system continuously monitors electrical characteristics (voltage, current, power factor) of the ultrasonic transducer and uses this feedback to detect changes in operational state. When material type or vascular pathway conditions change, the system adjusts the ultrasound signal parameters in real-time to maintain stable operation and prevent equipment damage.
Solution Approach 2:
The system dynamically adjusts ultrasound signal parameters (frequency, power, duty cycle) based on detected operational conditions. By changing these parameters in real-time according to material type and vascular pathway characteristics, the system maintains optimal performance and prevents equipment damage.
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 real-time determination and adjustment of the ultrasonic treatment parameters, reducing the risk of equipment damage and ensuring stable operation during procedures like atherectomy.
Implementation Method 1
The ultrasonic transducer receives the ultrasound electrical signal to generate an ultrasonic vibratory motion of the ultrasonic vibration transmission member
Implementation Method 2
Circuitry is configured to monitor an electrical characteristic associated with the ultrasonic transducer. The electrical characteristic may be one of a total voltage across the ultrasonic transducer, a total current to the ultrasonic transducer, an induced current of the ultrasonic transducer, or a Power Factor between the total voltage and the total current
Data Source
AI summary
A system and method for operating an ultrasonic treatment device includes generating an ultrasound electrical signal using an ultrasound signal generator; supplying the ultrasound electrical signal to an ultrasonic transducer to generate ultrasonic vibratory motion of an ultrasonic vibration transmission member; monitoring an electrical characteristic associated with the ultrasonic transducer; processing the monitored electrical characteristic to determine at least one of a type of material encountered by a distal end of the ultrasonic vibration transmission member and a type of vascular pathway that the ultrasonic catheter is traversing; and controlling at least one of a modulation frequency and a waveform of the ultrasound electrical signal based on the determined at least one of the type material encountered by the distal end of the ultrasonic vibration transmission member and the type of vascular pathway that the ultrasonic catheter is traversing.