3-D Potential Distribution Measurement in Electrosurgery by a Flexible Multielectrode System

Knopf, Christoph; Himmel, Jörg; Klöckner, Stephan; Thelen, Klaus; Kanoun, Olfa

doi:10.1109/tim.2014.2310112

Cited by 3 publications

(1 citation statement)

References 13 publications

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“…Recent electrosurgical instrument controlled by a microcontroller unit (MCU) can monitor the electrode temperature and transmitted RF energy during treatment. Some papers have attempted to use bio-impedance spectroscopy to provide information regarding thermal lesions during RFA without imaging devices [11][12][13]. However, this method requires additional RF electrodes and is only applicable to limited organs composed of homogeneous tissue such as liver.…”

Section: Introductionmentioning

confidence: 99%

Modularized Electrosurgical System With a Hybrid CPU-FPGA Chip for Real-Time Thermal Lesion Approximation

Baik

Lee

Yang

et al. 2022

IEEE Trans. Instrum. Meas.

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Electrosurgery that ablates the target tissues such as tumor and nerve cells using radiofrequency (RF) heating has been widely employed in the medical industry. Although the thermal lesion plays a key role in the efficacy and safety for this method, it is still difficult to identify the depth and size of the lesion during the treatment using recent electrosurgical systems. Herein, we propose a novel electrosurgical instrument for real-time approximation of thermal lesions during RF ablation. Thermal lesions were numerically calculated based on theoretical thermal models using a hybrid central processing unit (CPU)-fieldprogrammable-gate-array (FPGA) chip. Other functions such as RF control, voltage, and temperature measurements were implemented using RF components in a modular manner. It can solve voltage distribution in 6 ms by repeating the calculation 5,000 times and can anticipate the thermal lesion in 15.6 ms within a time step in real-time simulations. As a real-world validation, the feasibility of the system was demonstrated through an animal study using a swine model. The system is modularly designed using off-the-shelf chips and RF components to improve flexibility and scalability. It can be easily compatible with existing RF surgical applications and medical imaging devices and can improve the efficacy of RF ablation therapy.

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Section: Introductionmentioning

confidence: 99%

Modularized Electrosurgical System With a Hybrid CPU-FPGA Chip for Real-Time Thermal Lesion Approximation

Baik

Lee

Yang

et al. 2022

IEEE Trans. Instrum. Meas.

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Bipolar Transurethral Resection of the Prostate: Darwinian Evolution of an Instrumental Technique

Mamoulakis¹,

Rosette²

2015

Urology

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Finite volume analysis of the temperature distribution during transurethral resection of the prostate

Morgenstern

Richter

Himmel

et al. 2020

Tm - Technisches Messen

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AbstractIn prostate surgery the transurethral resection (TURP) represents the gold standard which is based on monopolar (M-TURP) and bipolar techniques (TURis). The investigation of the thermal behavior is one of the most important research topics in this type of surgery procedures. Here monopolar systems have been well investigated. The research on electrical and thermal behavior of bipolar systems was initiated about two decades ago. Previous studies focused on thermal behavior according to Joule heating, but did not gain information about the temperature distribution close to the active electrode of the resectoscope. Therefore, the numerical simulations on the temperature distribution near the active electrode of the resectoscope with a finite volume method are presented in this study, which takes blood perfusion into account. The results have shown that the influence of the blood perfusion process can be ignored for regions which are more than 0.4 mm away from the active electrode. This is based on two different blood perfusion models.

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3-D Potential Distribution Measurement in Electrosurgery by a Flexible Multielectrode System

Cited by 3 publications

References 13 publications

Modularized Electrosurgical System With a Hybrid CPU-FPGA Chip for Real-Time Thermal Lesion Approximation

Modularized Electrosurgical System With a Hybrid CPU-FPGA Chip for Real-Time Thermal Lesion Approximation

Bipolar Transurethral Resection of the Prostate: Darwinian Evolution of an Instrumental Technique

Finite volume analysis of the temperature distribution during transurethral resection of the prostate

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