Dynamic Range Measurement Circuit for Electrosurgical Generators

The patent implements dynamic range setting by allowing the measurement circuitry to automatically adjust between high and low range settings based on the magnitude of the measured voltage or current. The system monitors the measured value and switches ranges accordingly, making the measurement capability adaptive rather than fixed. This resolves the contradiction by enabling high precision across wide ranges without requiring multiple separate fixed-range devices.

The patent changes the operational parameters of the measurement circuitry by switching between different range settings (high and low). When the measured voltage or current exceeds the current range, the system changes the range parameter to accommodate the new measurement magnitude. This parameter change enables the single measurement circuit to maintain precision across the full dynamic range of the electrosurgical generator.

The patent implements self-service by having the measurement circuitry automatically monitor its own output and adjust its range setting without external intervention. The system continuously measures the voltage or current, compares it against threshold values, and autonomously switches between high and low ranges as needed. This eliminates the need for manual adjustments while maintaining measurement precision, directly resolving the contradiction between precision and ease of operation.

The patent employs feedback mechanisms where the measured voltage or current is continuously fed back to the range control logic. Based on this feedback, the system automatically adjusts the range setting to ensure the measured value remains within the optimal measurement range. This closed-loop feedback system maintains precision while requiring no user input, improving ease of operation.

The patent achieves universality by designing a single measurement circuit that can perform both high-range and low-range measurements through automatic range switching. Rather than manufacturing separate measurement circuits for different ranges, the system uses one multi-functional circuit that adapts its behavior based on the input signal magnitude. This resolves the contradiction by enabling a single manufactured design to serve multiple measurement purposes with high precision across the full range.

The patent makes the measurement circuit dynamic by enabling it to change its operational characteristics based on the input signal. The circuit transitions between high-range and low-range modes automatically, allowing a single manufactured design to achieve the precision of multiple specialized circuits. This dynamic capability eliminates the need to manufacture separate high-range and low-range measurement systems.

The patent applies preliminary action by having the redundant measurement circuit ready to take over before the main circuit switches ranges. When a range switch is detected, the system first ensures the redundant circuit has captured the measurement value, then completes the switch only when the redundant circuit is stable. This preliminary preparation prevents measurement discontinuities while maintaining fast response, resolving the contradiction between speed and stability.

The patent uses the redundant measurement circuit as a cushioning mechanism that absorbs the transient effects of range switching. By having a backup measurement path already in place, the system can switch ranges while the redundant circuit provides continuous measurement coverage, cushioning against any potential measurement gaps or discontinuities. This ensures stable measurement during the transition while maintaining fast response capability.