Abstract
Background The concept of a multitasking surgical device used microwave energy has been developed over a decade. Then, a microwave scissor-shaped surgical instrument (Acrosurg.®) has been invented and employed for pre-clinical experiments. Methods An animal study using specific pathogen-free pigs was conducted to compare surgical functions of newly developed microwave coagulation surgical instrument (Acrosurg.®) with current electrosurgical devices such as the electric current-based LigaSureTM Small Jaw Sealer (LS) and the ultrasound-based Harmonic Focus® Shears (HF). The Acrosurg.® was tested on 5 mm vessels with regard to seal time, burst pressure (BP), lateral thermal injury (LTI), cutting time for hepatectomy and mesenterectomy. Results In the Acrosurg.®’s group, the seal time for 5 mm vessels was shorter and LTI was narrower in comparison with the outcomes in the LigaSureTM’s group. Although BP in the Acrosurg.®’s group was lower than BP in the LigaSureTM’s group, it reached approximately 900 mmHg. Cutting time for hepatectomy was not different in both groups (Acrosurg.® and Harmonic Focus®) but time consumption for mesenterectomy in the Acrosurg.®’s group was significantly shorter. There were some bleedings existing in both groups but achieving complete hemostasis. Conclusion Novel microwave coagulation surgical instrument has the same effectiveness as compared to other commercialized energy devices. Moreover, it is more advantageous to some specific tissues and could be considered on clinical trial.
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Acknowledgements
The authors express high gratitude to the doctors and techinicians from the Department of Surgery, Shiga University of Medical Science for their supports. This research received financial support from Nikkiso Co., Ltd. (Tokyo, Japan).
Conflict of Interest Microwave Coagulation Surgical Instruments have been invented by Tohru Tani and Shigeyuki Naka as a preclinical model. Nikkiso Co. Ltd. (Tokyo, Japan) was granted the license from which they manufactured “Acrosurg.®”—a clinical model—A part of results from animal experiments which were conducted with the support of Nikkiso Co. Ltd. was used to draft the manuscript. D. T. Khiem (first author) and the other co-authors performed these animal experiments.
Tohru Tani and Shigeyuki Naka declare that they have the conflict of interest with Nikkiso Co. Ltd. The other authors declare that they have no conflict of interest.
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Khiem, D.T., Tani, T., Naka, S., Yamada, A., Tani, S. (2020). Comparative Study of Novel Microwave Coagulation Surgical Instrument and Currently Commercialized Energy Devices in an Animal Model. In: Van Toi , V., Le, T., Ngo, H., Nguyen, TH. (eds) 7th International Conference on the Development of Biomedical Engineering in Vietnam (BME7). BME 2018. IFMBE Proceedings, vol 69. Springer, Singapore. https://doi.org/10.1007/978-981-13-5859-3_19
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