# US 12,599,426 B2 · Electrosurgical generator having an extended measurement range > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,599,426 B2 - Document ID: US12599426B2 - Status: Granted - Kind: B2 - Application number: 18/077,051 - Filed: 2022-12-07 - Published: 2023-07-06 - Granted: 2026-04-14 - Earliest claimed: 2021-12-07 - Assignees: Olympus Winter & Ibe GmbH - Applicants: Olympus Winter & Ibe GmbH - Inventors: Fabian Janich; Jens Krüger; Daniel Ramin; Frank Breitsprecher - Web page: https://patentgrep.com/patent/US12599426B2 ## CPC - A61B 18/1206: {Generators therefor} - A61B 18/14: Probes or electrodes therefor - A61B 2018/00642: {with feedback, i.e. closed loop control} - A61B 2018/00702: {Power or energy} - A61B 2018/00779: {Power or energy} - A61B 2018/00791: {Temperature} - A61B 2018/00827: {Current} - A61B 2018/00869: {Phase} - A61B 2018/00892: {Voltage} - A61B 2018/126: {bipolar} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract An electrosurgical generator for supplying power, including an inverter for high voltage, which is led to an output to the connector of an electrosurgical instrument, a measurement system with at least one measurement monitor for a physical parameter at the output or at the electrosurgical instrument, and an operation controller which controls the inverter on the basis of at least one predefined operating sequence. The measurement monitor for the physical parameter is switchable between a plurality of different configurations which differ in the measurement range. The operation controller interacts with the measurement system so one of the different configurations of the measurement monitor is switched in each case, under control by the operating sequence. By switching the configuration, the suitable measurement range is always set during operation. Apparently contrariwise requirements in relation to a reliable measurement even at high amplitudes are linked with great measurement accuracy even at low amplitudes. ## Claims ### Claim 1 An electrosurgical generator for supplying power to an electrosurgical instrument by way of radiofrequency AC voltage, comprising an inverter for high voltage, which is led via an output line to an output to a connector of the electrosurgical instrument, a measurement system which comprises at least one measurement monitor for a physical parameter at the output or at the electrosurgical instrument, and an operation controller which controls the inverter on a basis of at least one predefined operating sequence, wherein the measurement monitor for the physical parameter is switchable between a plurality of different configurations which differ in terms of their measurement range, the operation controller interacting with the measurement system such that one of the different configurations of the measurement monitor is switched in each case, by control command of the operating sequence. ### Claim 2 (depends on 1) The electrosurgical generator as claimed in claim 1, wherein the measurement monitor is embodied as a measurement monitor for a output voltage and is switchable between a plurality of different configurations which differ in terms of their voltage measurement range, and/or the measurement monitor is embodied as a measurement monitor for the output current and is switchable between a plurality of different configurations which differ in terms of their current measurement range. ### Claim 3 (depends on 1) The electrosurgical generator as claimed in claim 1, wherein the at least one predefined operating sequence is selectable by a user from a set of predetermined operating sequences. ### Claim 4 (depends on 1) The electrosurgical generator as claimed in claim 1, wherein the at least one predefined operating sequence and/or the predefined operating sequences each comprise control data for an automated selection and switching of the plurality of different configurations, with the plurality of different configurations being switched in a predetermined sequence, according to which the plurality of different configurations of the measurement monitor or monitors are selected in succession, with sequence and/or times of a switchover between the plurality of different configurations being determined by the at least one predefined operating sequence. ### Claim 5 (depends on 4) The electrosurgical generator as claimed in claim 4, wherein the operating sequences comprise time control data which each specify times for connecting up and/or switching between the different configurations of the measurement monitors. ### Claim 6 (depends on 4) The electrosurgical generator as claimed in claim 4, wherein the operating sequences comprise event control data which each specify event conditions for connecting up and/or switching between the different configurations of the measurement monitor or monitors. ### Claim 7 (depends on 6) The electrosurgical generator as claimed in claim 6, wherein signal feedback is provided for at least one event condition for a signal for a temperature present at the electrosurgical instrument for a clamping force at a bipolar electrode of the electrosurgical instrument, for the force exerted by the electrosurgical instrument on tissue to be treated, for identifying carbon at the electrosurgical instrument and/or for identifying an ignition state of plasma at the electrosurgical instrument. ### Claim 8 (depends on 1) The electrosurgical generator as claimed in claim 1, wherein a switchover of configurations of one of the measurement monitors is implemented independently of a switchover of configurations of another of the measurement monitors. ### Claim 9 (depends on 1) The electrosurgical generator as claimed in claim 1, wherein a switching state matrix is provided, in which admissible configurations of the measurement monitor or monitors are defined. ### Claim 10 (depends on 1) The electrosurgical generator as claimed in claim 1, wherein the electrosurgical generator further comprises a processor and a computer-readable data medium on which instructions are stored, the instructions causing the at least one predefined operating sequence to be carried out when executed by the processor. ### Claim 11 (depends on 10) The electrosurgical generator as claimed in claim 10, wherein the at least one predefined operating sequence is configured as a data set with structured data, with the structured data comprising switching control data for connecting up the plurality of different configurations of the measurement monitors. ### Claim 12 (depends on 1) A system comprising an electrosurgical generator as claimed in claim 1 and an electrosurgical instrument, wherein the predefined operating sequence is selectable from a set of operating sequences, which are saved in the electrosurgical generator and/or the electrosurgical instrument. ### Claim 13 (depends on 12) The system as claimed in claim 12, wherein the electrosurgical instrument includes a machine-readable instrument identity indicator, and the system comprises a control device which enables one or more operating sequences from the set of operating sequences depending on the machine-readable instrument identity indicator. ### Claim 14 A method for operating an electrosurgical generator for supplying power to an electrosurgical instrument by way of radiofrequency AC voltage, the electrosurgical generator comprising an inverter for high voltage, which is led via an output line to an output to a connector of the electrosurgical instrument, a measurement system which comprises at least one measurement monitor for a physical parameter at the output or at the electrosurgical instrument, with the inverter being controlled by an operation controller on a basis of at least one predefined operating sequence, the method comprising: switching during operation between a plurality of different switchable configurations of the measurement monitor which differ in terms of their measurement range, with the switching of a respective one of the different switchable configurations of the measurement monitor for the physical parameter being controlled by control command of the operating sequence. ### Claim 15 (depends on 14) The method as claimed in claim 14, further comprising selecting the operating sequence from a set of operating sequences which are saved in the electrosurgical generator or the electrosurgical instrument. ### Claim 16 (depends on 15) The method as claimed in claim 15, wherein one or more operating sequences from the set of operating sequences are enabled depending on a machine-readable instrument identity indicator which characterizes the electrosurgical instrument. ### Claim 17 (depends on 4) A method for operating the electrosurgical generator according to claim 4 for supplying power to the electrosurgical instrument by way of radiofrequency AC voltage, the electrosurgical generator comprising the inverter for high voltage, which is led via the output line to the output to a connector of the electrosurgical instrument, a measurement system which comprises the measurement monitor for the physical parameter at the output or at the electrosurgical instrument, with the inverter being controlled by an operation controller on a basis of the predefined operating sequence, the method comprising: switching during operation between a plurality of different switchable configurations of the measurement monitor which differ in terms of their measurement range, with the switching of a respective one of the different configurations of the measurement monitor for the physical parameter being controlled by control command of the operating sequence.