研究的目的是开发一种新的方法，使用高频双极凝固焊接活体组织，将额窦肿瘤中的硬脑膜缺陷与颅内扩散相连接。根据硬脑膜缺陷修复的方法，患者被分为两组。第一组（对照组）包括那些根据传统方法连接硬脑膜缺陷（聚丙烯线缝合）的患者，在第二组中，硬脑膜缺陷通过使用EKVZ-300，Patonmed高频双极电焊连接。通过研究，作者提出了一种有效的方法，用于在去除颅内扩散的额窦肿瘤后连接硬脑膜缺陷。这样的方法包括高频双极电焊连接方法，其使用对相邻组织具有最小破坏作用，同时密封连接了硬脑膜。这是由于在40-48°C的温度下以一定的调制提供具有特定波特性的电流，导致组织的连接不形成凝固痂皮，这是由于蛋白质相关的电热粘合机制。提供的数据表明，与传统缝合方法相比，使用高频双极电焊连接硬脑膜缺陷和大腿筋膜恢复脑脊液循环的闭环生理电路具有显着优势。该方法减少了手术中和术后并发症、手术时间和术后时间的长度。 ©作者（们）2023。由牛津大学出版社出版。版权所有。有关权限，请发送电子邮件至：journals.permissions@oup.com。

The aim of study is to develop a new method of connecting the dura mater defects in frontal sinus tumors with intracranial spread using high-frequency bipolar coagulation for welding of living tissues. Depending on the method of dura mater defect repair, patients were divided into 2 groups. The 1st group (control) included patients whose dura mater defect was connected according to the conventional method (suturing with polypropylene threads), in the 2nd group - the dura mater defect was connected by high-frequency bipolar electric welding using EKVZ-300, Patonmed. As a result of the study, the authors proposed an effective method of connecting the dura mater defects after the removal of frontal sinus tumors spreading intracranially. Such methods include a high-frequency bipolar electric welding method, the use of which contributed to a minimal destructive effect on adjacent tissues, but at the same time hermetically connected the dura mater. This was possible due to the supply of current with certain wave characteristics in a certain modulation at a temperature of 40-48°C, resulting in the connection of tissues without the formation of a coagulation scab due to the mechanism of protein-associated electrothermal adhesion of tissues. Presented data indicate significant advantages of using high-frequency bipolar electric welding the dura mater defects and fascia lata to restore the closed physiological circuit of cerebrospinal fluid circulation, compared to the traditional suture method. This approach has reduced intra- and postoperative complications, the time of surgery, and the length of the postoperative period.© The Author(s) 2023. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.