Battery Interlock System and Related Method

An interlock system and related method includes a battery assembly, and first and second modules. The battery assembly has first and second power contacts, and a sense contact. The battery assembly includes one or more cells, a standby circuit, and an interface circuit. The standby circuit electrically couples to the first power contact and the sense contact for generating a standby signal in the absence of a detected external electrical coupling between the first power contact and the sense contact. The interface circuit electrically couples to the second power contact and to the at least one cell. The interface circuit is adapted to electrically decouple the second power contact from the at least one cell as a function of the standby signal. The first module is attachable to the battery assembly and has a first pair of contacts adapted to couple with the first power contact and the sense contact of the battery assembly. The first module also has a second pair of contacts electrically coupled to the first pair of contacts. The second module is attachable to the first module. The second module has a third pair of contacts adapted to couple with the second pair of contacts. All of the contacts of the third pair of contacts are electrically coupled together. 1. An interlock system , comprising: at least one cell;', 'a standby circuit electrically coupled to the first power contact and the sense contact, wherein the standby circuit is configured to generate a standby signal in the absence of a detected external electrical coupling between the first power contact and the sense contact; and', 'an interface circuit electrically coupled to the second power contact and to the at least one cell, wherein the interface circuit is adapted to electrically decouple the second power contact from the at least one cell as a function of the standby signal;, 'a battery assembly having first and second power contacts, and a sense contact, the battery assembly comprisinga first module ...

System and Method for DC Tissue Impedance Sensing

A system and method for transmitting electrosurgical energy from a generator to an electrosurgical instrument are provided. The electrosurgical system includes a generator adapted to generate electrosurgical energy for treating tissue. The generator includes one or more active output terminals which supply energy to the tissue. The active output terminals are operatively connected to one or more active leads. The generator also includes one or more return output terminals which returns energy from the tissue. The return output terminals are operatively connected to at least one return lead. The system also includes an electrosurgical instrument operatively connected to the one or more active leads and one or more return electrodes operatively connected to one or more return leads. The system further includes an electrosurgical cable including one or more active leads and one or more return leads. The one or more active leads and one or more return leads are wound in a double helix fashion such that the electrical field along the cable is mitigated along the length thereof. 1. An electrosurgical system , comprising:a direct current power supply configured to supply direct current;a radio frequency output stage electrically coupled to the direct current power supply, the radio frequency output stage configured to transform direct current into a radio frequency waveform;a direct current voltage sensor coupled to the direct current power supply and configured to measure direct current voltage;a direct current current sensor coupled to the direct current power supply and configured to measure direct current; anda controller coupled to the direct current voltage and current sensors, the controller configured to determine at least one of voltage and current of the radio frequency waveform based on the measured voltage and current of the direct current.2. The electrosurgical system according to claim 1 , wherein the radio frequency output stage includes at least one active ...

System and Method for Verifying the Operating Frequency of Digital Control Circuitry

A system and method are presented for verifying the operating frequency of digital control circuitry. The system and method according to the present disclosure provide for a digitally controlled system, such as an electrosurgical system, to confirm or verify its operating frequency using a single external device, and software and/or firmware. 1. A method for verifying an operational frequency in a digital control circuitry , the method comprising:operating an oscillator at a predetermined frequency;inputting a first clock signal generated by the oscillator to the digital control circuitry via a first input;determining the number of transitions of the first clock signal at the first input;inputting a second clock signal to the digital control circuitry via a second input;initiating a timed sequence where the number of transitions at the first input are counted over a predetermined number of control clock cycles at the second input; anddetermining the operational frequency of the digital control circuitry using the predetermined number of clock cycles, the number of transitions of the first clock signal, and the predetermined frequency of the oscillator.2. The method of claim 1 , wherein the step of determining the operational frequency includes determining the operational frequency by dividing the number of clock cycles by the number of transitions and then multiplying the result with the predetermined frequency of the oscillator.3. The method of claim 1 , wherein the oscillator is an external oscillator relative to the digital control circuitry.4. The method of claim 1 , wherein the second clock signal is generated by a control oscillator.5. The method of claim 1 , wherein the digital control circuitry includes devices selected from the group consisting of microcontrollers claim 1 , digital signal processors (DSPs) claim 1 , and field-programmable gate arrays (FPGAs).6. The method of claim 1 , further comprising the step of selecting the predetermined frequency of ...

Method for Employing Single Fault Safe Redundant Signals

An electrosurgical system includes an electrosurgical instrument coupled to an electrosurgical generator. The electrosurgical system may include a first sensor and a second sensor, which are configured to detect redundant tissue properties and output a signal corresponding thereto. The electrosurgical system has a signal processing circuit for receiving and modifying the output signal from the second sensor. The electrosurgical generator may include a controller for receiving an output signal from the first sensor and a processed signal from the signal processing circuit. The controller compares the two signals received and shuts down the system based on the comparison of the first sensor and a processed signal. 1. An electrosurgical generator comprising:a first sensor configured to output a first signal indicative of a tissue property;a second sensor configured to output a second signal indicative of the tissue property;a signal processing circuit operatively coupled to the second sensor, the signal processing circuit configured to receive the second signal and to output a processed signal; anda controller configured to receive the first signal from the first sensor and the processed signal from the signal processing circuit, wherein the controller is further configured to compare the first signal to the processed signal.2. The electrosurgical generator according to claim 1 , wherein the signal processing circuit is further configured to delay the second signal for a predetermined time period to generate the processed signal.3. The electrosurgical generator according to claim 1 , wherein the signal processing circuit is further configured to invert the second signal to generate the processed signal and to output the processed signal.4. The electrosurgical generator according to claim 3 , wherein the controller is configured to terminate output of the electrosurgical generator in response to the first signal and the processed signal being substantially identical.5. ...

Electrosurgical Generator

An electrosurgical system for performing an electrosurgical procedure is provided and includes an electrosurgical generator and a calibration computer system. The electrosurgical generator includes one or more processors and a measurement module including one or more log amps that are in operative communication with the processor. The calibration computer system configured to couple to a measurement device and is configured to measure parameters of an output signal generated by the electrosurgical generator. The calibration computer system is configured to compile the measured parameters into one or more data look-up tables and couple to the electrosurgical generator for transferring the data look-up table(s) to memory of the electrosurgical generator. The microprocessor is configured to receive an output from the log amp(s) and access the data look-up table(s) from memory to execute one or more control algorithms for controlling an output of the electrosurgical generator. 1. An electrosurgical system for performing an electrosurgical procedure , comprising:an electrosurgical generator including at least one microprocessor and a measurement module including at least one log amp in operative communication with the processor; anda calibration computer system operably coupled to a measurement device configured to measure parameters of an output signal generated by the electrosurgical generator, the calibration computer system configured to compile the measured parameters into at least one data look-up table and couple to the electrosurgical generator for transferring the at least one data look-up table to memory of the electrosurgical generator,wherein the microprocessor is configured to receive an output from the at least one log amp and access the at least one data look-up table from memory to execute at least one control algorithm for controlling an output of the electrosurgical generator.2. The electrosurgical system according to claim 1 , wherein the at least one ...

METHOD FOR EMPLOYING SINGLE FAULT SAFE REDUNDANT SIGNALS

An electrosurgical system includes an electrosurgical instrument coupled to an electrosurgical generator. The electrosurgical system may include a first sensor and a second sensor, which are configured to detect redundant tissue properties and output a signal corresponding thereto. The electrosurgical system has a signal processing circuit for receiving and modifying the output signal from the second sensor. The electrosurgical generator may include a controller for receiving an output signal from the first sensor and a processed signal from the signal processing circuit. The controller compares the two signals received and shuts down the system based on the comparison of the first sensor and a processed signal. 117-. (canceled)18. An electrosurgical system , comprising:a signal processing circuit operably coupled to a first sensor, that measures at least one property of electrosurgical energy and outputs a first signal, and a second sensor, that measures the at least one property of the electrosurgical energy and outputs a second signal, the signal processing circuit configured to receive the second signal, to modify the second signal, and to output a processed signal; and receive the first signal and the processed signal;', 'compare the first signal and the processed signal;', 'convert the processed signal back to the second signal when a difference between the first signal and the processed signal exceeds a predetermined amount;', 'compare the first signal to the second signal converted from the processed signal; and', 'terminate an output of electrosurgical energy when the first signal and the processed signal are substantially identical., 'a controller configured to19. The electrosurgical system according to claim 18 , wherein the signal processing circuit is configured to delay the second signal for a predetermined period of time before outputting the processed signal.20. The electrosurgical system according to claim 18 , wherein the signal processing circuit ...

SYSTEM AND METHOD FOR VERIFYING THE OPERATING FREQUENCY OF DIGITAL CONTROL CIRCUITRY

A system and method are presented for verifying the operating frequency of digital control circuitry. The system and method according to the present disclosure provide for a digitally controlled system, such as an electrosurgical system, to confirm or verify its operating frequency using a single external device, and software and/or firmware. 113-. (canceled)14. An operational frequency verification system comprising:a first oscillator for generating a first clock signal;a second oscillator for generating a second clock signal; anddigital control circuitry for receiving the first and second clock signals via first and second inputs, respectively;wherein an operational frequency of the digital control circuitry is verified by the second oscillator based on at least a timed sequence where a number of transitions on the second input are counted over a fixed number of control clock cycles at the first input.15. The system according to claim 14 , wherein the second oscillator is an external oscillator with respect to the digital control circuitry.16. The system according to claim 14 , wherein the digital control circuitry includes devices selected from the group consisting of microcontrollers claim 14 , digital signal processors (DSPs) claim 14 , and field-programmable gate arrays (FPGAs).17. The system according to claim 14 , wherein claim 14 , when the control circuitry is powered up claim 14 , a frequency of the second oscillator is selected based on an electrosurgical procedure to be performed.18. The system according to claim 17 , wherein the frequency of the second oscillator is selected according to one or more of the following criteria: a clock rate corresponding to a system controlled by the digital control circuitry claim 17 , an absolute tolerance of a frequency of the system being controlled claim 17 , and a rate at which the verification of the operational frequency takes place.19. The system according to claim 14 , wherein the operational frequency of the ...

SYSTEM AND METHOD FOR DC TISSUE IMPEDANCE SENSING

A system and method for transmitting electrosurgical energy from a generator to an electrosurgical instrument are provided. The electrosurgical system includes a generator adapted to generate electrosurgical energy for treating tissue. The generator includes one or more active output terminals which supply energy to the tissue. The active output terminals are operatively connected to one or more active leads. The generator also includes one or more return output terminals which returns energy from the tissue. The return output terminals are operatively connected to at least one return lead. The system also includes an electrosurgical instrument operatively connected to the one or more active leads and one or more return electrodes operatively connected to one or more return leads. The system further includes an electrosurgical cable including one or more active leads and one or more return leads. The one or more active leads and one or more return leads are wound in a double helix fashion such that the electrical field along the cable is mitigated along the length thereof. 120-. (canceled)21. An electrosurgical generator , comprising:a direct current power supply configured to supply direct current;a radio frequency output stage electrically coupled to the direct current power supply, the radio frequency output stage configured to generate a radio frequency waveform based on the direct current;a direct current power supply sensor coupled to the direct current power supply and configured to measure at least one property of the direct current; anda controller configured to derive at least one property of the radio frequency waveform based on a measured property of the direct current.22. The electrosurgical generator according to claim 21 , wherein the radio frequency output stage includes at least one active output terminal and at least one return output terminal.23. The electrosurgical generator according to claim 22 , further comprising:a radio frequency output ...

Method for employing single fault safe redundant signals

An electrosurgical system includes an electrosurgical instrument coupled to an electrosurgical generator. The electrosurgical system may include a first sensor and a second sensor, which are configured to detect redundant tissue properties and output a signal corresponding thereto. The electrosurgical system has a signal processing circuit for receiving and modifying the output signal from the second sensor. The electrosurgical generator may include a controller for receiving an output signal from the first sensor and a processed signal from the signal processing circuit. The controller compares the two signals received and shuts down the system based on the comparison of the first sensor and a processed signal.

ELECTROSURGICAL GENERATOR

An electrosurgical system for performing an electrosurgical procedure is provided and includes an electrosurgical generator and a calibration computer system. The electrosurgical generator includes one or more processors and a measurement module including one or more log amps that are in operative communication with the processor. The calibration computer system configured to couple to a measurement device and is configured to measure parameters of an output signal generated by the electrosurgical generator. The calibration computer system is configured to compile the measured parameters into one or more data look-up tables and couple to the electrosurgical generator for transferring the data look-up table(s) to memory of the electrosurgical generator. The microprocessor is configured to receive an output from the log amp(s) and access the data look-up table(s) from memory to execute one or more control algorithms for controlling an output of the electrosurgical generator.

System and method for DC tissue impedance sensing

A system and method for transmitting electrosurgical energy from a generator to an electrosurgical instrument are provided. The electrosurgical system includes a generator adapted to generate electrosurgical energy for treating tissue. The generator includes one or more active output terminals which supply energy to the tissue. The active output terminals are operatively connected to one or more active leads. The generator also includes one or more return output terminals which returns energy from the tissue. The return output terminals are operatively connected to at least one return lead. The system also includes an electrosurgical instrument operatively connected to the one or more active leads and one or more return electrodes operatively connected to one or more return leads. The system further includes an electrosurgical cable including one or more active leads and one or more return leads. The one or more active leads and one or more return leads are wound in a double helix fashion such that the electrical field along the cable is mitigated along the length thereof.

Electrosurgical generator

An electrosurgical system for performing an electrosurgical procedure is provided and includes an electrosurgical generator and a calibration computer system. The electrosurgical generator includes one or more processors and a measurement module including one or more log amps that are in operative communication with the processor. The calibration computer system configured to couple to a measurement device and is configured to measure parameters of an output signal generated by the electrosurgical generator. The calibration computer system is configured to compile the measured parameters into one or more data look-up tables and couple to the electrosurgical generator for transferring the data look-up table(s) to memory of the electrosurgical generator. The microprocessor is configured to receive an output from the log amp(s) and access the data look-up table(s) from memory to execute one or more control algorithms for controlling an output of the electrosurgical generator.

System and method for verifying the operating frequency of digital control circuitry

A system and method are presented for verifying the operating frequency of digital control circuitry. The system and method according to the present disclosure provide for a digitally controlled system, such as an electrosurgical system, to confirm or verify its operating frequency using a single external device, and software and/or firmware.

Method and system for employing single fault safe redundant signals

An electrosurgical system includes an electrosurgical instrument coupled to an electrosurgical generator. The electrosurgical isystem may include a first sensor and a second sensor, which are configured to detect redundant tissue properties and output a signal corresponding thereto. The electrosurgical system has a signal processing circuit for receiving and modifying the output signal from the second sensor. The electrosurgical generator may include a controller for receiving an output signal from the first sensor and a processed signal from the signal processing circuit. The controller compares the two signals received and shuts down the system based on the comparison of the first sensor and a processed signal.

System for dc tissue impedance sensing

Electrosurgical generator

An electrosurgical system for performing an electrosurgical procedure is provided and includes an electrosurgical generator and a calibration computer system. The electrosurgical generator includes one or more processors and a measurement module including one or more log amps that are in operative communication with the processor. The calibration computer system configured to couple to a measurement device and is configured to measure parameters of an output signal generated by the electrosurgical generator. The calibration computer system is configured to compile the measured parameters into one or more data look-up tables and couple to the electrosurgical generator for transferring the data look-up table(s) to memory of the electrosurgical generator. The microprocessor is configured to receive an output from the log amp(s) and access the data look-up table(s) from memory to execute one or more control algorithms for controlling an output of the electrosurgical generator.

Square wave for vessel sealing

A square wave generator suitable for use with an electrosurgical device is provided. The square wave generator includes a voltage source configured to output a waveform and a comparator operatively coupled to the voltage source and configured to output energy in the form of a square wave. The generator may also include at least one sensor configured to sense an operational parameter of the energy outputted from the comparator and to provide a sensor signal corresponding thereto and a controller adapted to receive the at least one sensor signal and in response thereto control the voltage source.