Advancement in liver laparoscopic resection – development of a new surgical device
| Autor: | M Peteja, Pavel Zonča, Ahmed El-Gendi, Stanislav Czudek, Peter Ihnát, Martina Skrobankova, Ladislav Kárník, Petr Vávra, Jana Jurčíková |
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| Rok vydání: | 2018 |
| Předmět: |
Laparoscopic surgery
medicine.medical_specialty Physiology medicine.medical_treatment Immunology Biophysics Adhesion (medicine) Ocean Engineering 030230 surgery liver Biochemistry 03 medical and health sciences 0302 clinical medicine In vivo Open Resection radiofrequency energy Radiofrequency energy medicine Hepatectomy Humans General Pharmacology Toxicology and Pharmaceutics lcsh:QH301-705.5 Posterior liver segments Research Articles lcsh:R5-920 business.industry General Neuroscience Equipment Design Cell Biology General Medicine medicine.disease Ablation laparoscopic surgery Hemostasis Surgical posterior liver segments Surgery lcsh:Biology (General) Liver Hemostasis Catheter Ablation Laparoscopy 030211 gastroenterology & hepatology lcsh:Medicine (General) business Ex vivo |
| Zdroj: | Brazilian Journal of Medical and Biological Research Brazilian Journal of Medical and Biological Research v.51 n.4 2018 Associação Brasileira de Divulgação Científica (ABDC) instacron:ABDC Brazilian Journal of Medical and Biological Research, Volume: 51, Issue: 4, Article number: e6062, Published: 01 MAR 2018 Brazilian Journal of Medical and Biological Research, Vol 51, Iss 4 (2018) |
| ISSN: | 1414-431X 0100-879X |
| Popis: | Liver resection is the standard treatment for any liver lesion. Laparoscopic liver resection is associated with lower intra-operative blood loss and fewer complications than open resection. Access to the posterior part of the right liver lobe is very uncomfortable and difficult for surgeons due the anatomic position, especially when employing laparoscopic surgery. Based on these experiences, a new laparoscopic device was developed that is capable of bending its long axis and allowing the application of radiofrequency energy in areas that were not technically accessible. The device is equipped with four telescopic needle electrodes that cause tissue coagulation after the delivery of radiofrequency energy. Ex vivo testing was performed in 2012 and 2014 at the University Hospital, Ostrava, on a porcine liver tissue. The main goal of this testing was to verify if the newly proposed electrode layout was suitable for sufficient tissue coagulation and creating a safety zone around lesions. During the ex vivo testing, the material of needle electrodes was improved to achieve the lowest possibility of adhesion. The power supply was adjusted from 20 to 120 W and the ablation time, which varied from 10 to 110 s, was monitored. Subsequently, optimal power delivery and time for coagulation was determined. This experimental study demonstrated the feasibility and safety of the newly developed device. Based on the ex vivo testing, LARA-K1 can create a safety zone of coagulation. For further assessment of the new device, an in vivo study should be performed. Web of Science 51 4 art. no. e6062 |
| Databáze: | OpenAIRE |
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