Current sensing for navigated electrosurgery: Proof of concept

K. Carter; A. Lasso; T. Ungi; E. Morin; G. Fichtinger

doi:10.1117/12.2216094

Current sensing for navigated electrosurgery: Proof of concept

K. Carter, A. Lasso, T. Ungi, E. Morin, G. Fichtinger

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

PURPOSE: Tracked power-tools are routinely used in computer-assisted intervention and surgical systems. In order to properly perform temporal and spatial monitoring of the tracked tool with the navigation system, it is important to know when the tool, such as an electrosurgical cauterizer, is being activated during surgery. We have developed a general purpose current sensor that can be augmented to tracked surgical devices in order to inform the surgeon and the navigation system when the tool is activated. METHODS: Two non-invasive AC current sensors, two peak detector circuits, one voltage comparator circuit, and a microcontroller were used to detect when an electrosurgical cauterizer is being powered on and differentiate between the cut and coagulation modes. The system was tested by cauterizing various substances at varied power ratings. RESULTS: By comparing the ratio of amplitudes as well as the frequencies of the signals, the current sensing system is able to differentiate between on/off, cut/coagulation, as well as when cauterizer tissue. DISCUSSION: The current sensing system is able to detect when the cauterizer is being powered on and can differentiate between monopolar cut and coagulation modes. CONCLUSION: This system shows promise for detecting when the cauterizer is being powered on and in the future could be integrated with a navigation system in order to easily temporally monitor the electrosurgical tool.

Original language	English (US)
Title of host publication	Medical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling
Publisher	SPIE
Volume	9786
ISBN (Electronic)	9781510600218
DOIs	https://doi.org/10.1117/12.2216094
State	Published - 2016
Externally published	Yes
Event	Medical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling - San Diego, United States Duration: Feb 28 2016 → Mar 1 2016

Other

Other	Medical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling
Country/Territory	United States
City	San Diego
Period	2/28/16 → 3/1/16

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
Biomaterials
Radiology Nuclear Medicine and imaging

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10.1117/12.2216094

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Carter, K, Lasso, A, Ungi, T, Morin, E & Fichtinger, G 2016, Current sensing for navigated electrosurgery: Proof of concept. in Medical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling. vol. 9786, 97861Y, SPIE, Medical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling, San Diego, United States, 2/28/16. https://doi.org/10.1117/12.2216094

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title = "Current sensing for navigated electrosurgery: Proof of concept",

abstract = "PURPOSE: Tracked power-tools are routinely used in computer-assisted intervention and surgical systems. In order to properly perform temporal and spatial monitoring of the tracked tool with the navigation system, it is important to know when the tool, such as an electrosurgical cauterizer, is being activated during surgery. We have developed a general purpose current sensor that can be augmented to tracked surgical devices in order to inform the surgeon and the navigation system when the tool is activated. METHODS: Two non-invasive AC current sensors, two peak detector circuits, one voltage comparator circuit, and a microcontroller were used to detect when an electrosurgical cauterizer is being powered on and differentiate between the cut and coagulation modes. The system was tested by cauterizing various substances at varied power ratings. RESULTS: By comparing the ratio of amplitudes as well as the frequencies of the signals, the current sensing system is able to differentiate between on/off, cut/coagulation, as well as when cauterizer tissue. DISCUSSION: The current sensing system is able to detect when the cauterizer is being powered on and can differentiate between monopolar cut and coagulation modes. CONCLUSION: This system shows promise for detecting when the cauterizer is being powered on and in the future could be integrated with a navigation system in order to easily temporally monitor the electrosurgical tool.",

author = "K. Carter and A. Lasso and T. Ungi and E. Morin and G. Fichtinger",

year = "2016",

doi = "10.1117/12.2216094",

language = "English (US)",

volume = "9786",

booktitle = "Medical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling",

publisher = "SPIE",

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AU - Morin, E.

AU - Fichtinger, G.

PY - 2016

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N2 - PURPOSE: Tracked power-tools are routinely used in computer-assisted intervention and surgical systems. In order to properly perform temporal and spatial monitoring of the tracked tool with the navigation system, it is important to know when the tool, such as an electrosurgical cauterizer, is being activated during surgery. We have developed a general purpose current sensor that can be augmented to tracked surgical devices in order to inform the surgeon and the navigation system when the tool is activated. METHODS: Two non-invasive AC current sensors, two peak detector circuits, one voltage comparator circuit, and a microcontroller were used to detect when an electrosurgical cauterizer is being powered on and differentiate between the cut and coagulation modes. The system was tested by cauterizing various substances at varied power ratings. RESULTS: By comparing the ratio of amplitudes as well as the frequencies of the signals, the current sensing system is able to differentiate between on/off, cut/coagulation, as well as when cauterizer tissue. DISCUSSION: The current sensing system is able to detect when the cauterizer is being powered on and can differentiate between monopolar cut and coagulation modes. CONCLUSION: This system shows promise for detecting when the cauterizer is being powered on and in the future could be integrated with a navigation system in order to easily temporally monitor the electrosurgical tool.

AB - PURPOSE: Tracked power-tools are routinely used in computer-assisted intervention and surgical systems. In order to properly perform temporal and spatial monitoring of the tracked tool with the navigation system, it is important to know when the tool, such as an electrosurgical cauterizer, is being activated during surgery. We have developed a general purpose current sensor that can be augmented to tracked surgical devices in order to inform the surgeon and the navigation system when the tool is activated. METHODS: Two non-invasive AC current sensors, two peak detector circuits, one voltage comparator circuit, and a microcontroller were used to detect when an electrosurgical cauterizer is being powered on and differentiate between the cut and coagulation modes. The system was tested by cauterizing various substances at varied power ratings. RESULTS: By comparing the ratio of amplitudes as well as the frequencies of the signals, the current sensing system is able to differentiate between on/off, cut/coagulation, as well as when cauterizer tissue. DISCUSSION: The current sensing system is able to detect when the cauterizer is being powered on and can differentiate between monopolar cut and coagulation modes. CONCLUSION: This system shows promise for detecting when the cauterizer is being powered on and in the future could be integrated with a navigation system in order to easily temporally monitor the electrosurgical tool.

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Current sensing for navigated electrosurgery: Proof of concept

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