[Clinical application of retroauricular hairline approach in submandibular gland resection assisted by endoscope].

Objective:To investigate the clinical effect of retroauricular hairline approach in submandibular gland resection assisted by endoscope. Methods:A total of 18 patients with submandibular gland benign tumors treated in our hospital from September 2022 to September 2023 were selected. A 5 cm incision was designed in the retroauricular hairline, and the flap was turned over directly to the anterior edge of sternocleidomastoid muscle, then the flap was turned over to build the cavity through endoscopic surgery, and submandibular gland resection was completed with the assistance of endoscope. After operation, a negative pressure drainage was placed into the hairline, and the wound was closed by continuous intracutaneous suture. The clinical effect was evaluated after 3-6 months follow-up. Results:All patients underwent submandibular gland resection with endoscopic assistance as planned, and none of them converted to submaxillary incision during operation. The operation time was 65-97 min, with an average of 75 min. Intraoperative bleeding was 10-20 mL, with an average of 14 mL.No tongue numbness, wound infection, or tumor recurrence occurred after operation. However, there were 10 patients with ear numbness and discomfort of auricle after surgery, which gradually recovered after 6-9 months of follow-up. Two patients had crooked mouth after surgery, and the symptoms were gradually relieved after follow-up. All incisions healed in stage I and were concealed. Conclusion:Endoscopic retroauricular hairline approach is a choice for submandibular gland resection with good cosmetic effect, less trauma and fewer complications.

Basic performance of domestic surgical robot and the safety and effectiveness of integrated energy equipment. / å›½äº§æ‰‹æœ¯æœºå™¨äººåŸºæœ¬æ€§èƒ½å’Œæ•´åˆèƒ½é‡è®¾å¤‡çš„å®‰å ¨æ€§åŠæœ‰æ•ˆæ€§.

OBJECTIVES: Surgical robot system has broken the limitation of traditional surgery and shown excellent performance in surgery, and has been widely used in minimally invasive treatment in most areas of surgery. This study aims to verify the basic performance of the domestic surgical robot system and the safety and effectiveness of the integrated bipolar electrocoagulation and ultrasonic knife. METHODS: The basic performance of the domestic surgical robot system was evaluated by completing the square knot and surgical knot, vertical and horizontal perforation and right ring perforation and suture, as well as picking up beans. Compared with laparoscopy, the safety and effectiveness of the domestic surgical robot after integrated interconnection bipolar electrocoagulation and ultrasonic scalpel were evaluated by detecting the vascular closure performance and the degree of histopathological damage in animals. RESULTS: Compared with freehand knotting, domestic robot knotting speed and circumference were slightly worse, but better than laparoscopic knotting. There was no statistical significance in the tension difference of the surgical knots among the 3 methods (P>0.05), but the tension of the square knots made by the freehand and the domestic surgical robot was greater than that of the laparoscopy (P<0.05). The space required for both the left and right forceps heads of knots was smaller than that of laparoscopy (P<0.001), which successfully completed the 4 quadrant suture tasks, and the time of picking up beans was significantly less than that of laparoscopy (P<0.05). There was no significant difference in the temperature of the liver tissue after the bipolar electrocoagulation between the interconnected domestic surgical robot and the laparoscopy (P>0.05), and the acute thermal injury was observed under the light microscope. The temperature of the liver tissue treated by the domestic robotic ultrasound knife was higher than that of the laparoscopic ultrasound knife (P<0.05). CONCLUSIONS: Domestic surgical robots are obviously superior to laparoscopy in suturing, knotting, and moving objects, and domestic surgical robots' interconnect bipolar electrocoagulation and ultrasonic knife have achieved success in animal experiments, and hemostasis is considered to be safe and effective.

Basic performance of domestic surgical robot and the safety and effectiveness of integrated energy equipment / 中南大学学报(医学版)

OBJECTIVES@#Surgical robot system has broken the limitation of traditional surgery and shown excellent performance in surgery, and has been widely used in minimally invasive treatment in most areas of surgery. This study aims to verify the basic performance of the domestic surgical robot system and the safety and effectiveness of the integrated bipolar electrocoagulation and ultrasonic knife.@*METHODS@#The basic performance of the domestic surgical robot system was evaluated by completing the square knot and surgical knot, vertical and horizontal perforation and right ring perforation and suture, as well as picking up beans. Compared with laparoscopy, the safety and effectiveness of the domestic surgical robot after integrated interconnection bipolar electrocoagulation and ultrasonic scalpel were evaluated by detecting the vascular closure performance and the degree of histopathological damage in animals.@*RESULTS@#Compared with freehand knotting, domestic robot knotting speed and circumference were slightly worse, but better than laparoscopic knotting. There was no statistical significance in the tension difference of the surgical knots among the 3 methods (P>0.05), but the tension of the square knots made by the freehand and the domestic surgical robot was greater than that of the laparoscopy (P<0.05). The space required for both the left and right forceps heads of knots was smaller than that of laparoscopy (P<0.001), which successfully completed the 4 quadrant suture tasks, and the time of picking up beans was significantly less than that of laparoscopy (P<0.05). There was no significant difference in the temperature of the liver tissue after the bipolar electrocoagulation between the interconnected domestic surgical robot and the laparoscopy (P>0.05), and the acute thermal injury was observed under the light microscope. The temperature of the liver tissue treated by the domestic robotic ultrasound knife was higher than that of the laparoscopic ultrasound knife (P<0.05).@*CONCLUSIONS@#Domestic surgical robots are obviously superior to laparoscopy in suturing, knotting, and moving objects, and domestic surgical robots' interconnect bipolar electrocoagulation and ultrasonic knife have achieved success in animal experiments, and hemostasis is considered to be safe and effective.

Effects of ultrasonic scalpel combined with hemostatic gauze on postoperative axillary wound drainage in patients with breast cancer / 中华内分泌外科杂志

Objective To investigate the effect of ultrasonic scalpel combined with hemostatic gauze to reduce the postoperative axillary wound drainage in breast cancer patients after surgery .Methods 243 cases of breast cancer patients admitted from Mar .2011 to May.2014 were selected as the research object , and they were divided into four groups according to the envelope method:group A(67 cases), group B(59 cases), group C(56 cases), and group D(61 cases).The four groups were given different surgical hemostatic methods: ultrasonic scalpel combined with hemostatic gauze in group A , ultrasonic scalpel without hemostatic gauze in group B , elec-tric knife and hemostatic gauze in group C , and electric knife in group D .The operation time , intraoperative blood loss , postoperative drainage , and drainage tube indwelling time were observed and compared between the four groups.Results The operation time and intraoperative blood loss had no significant difference between group A and group B(P>0.05), yet there was significant difference in postoperative drainage and drainage tube indwelling days ( P0.05), yet there was significant difference in the intraoperative blood loss , postoperative drainage and drainage tube indwelling days (P<0.05).There was significant difference when the same indicator of group A and group B compared with group C or group D ( P<0.05 ) .Conclusion Ultrasonic scalpel combined with hemostatic gauze used in breast cancer surgery can effectively reduce the axillary wound exudation , and shorten the drainage time .

Surgical treatment of large substernal thyroid goiter: analysis of 12 patients.

This study was carried out to evaluate the clinical presentation, surgical treatment, complications, and risk of malignancy for large substernal goiter. From March 2010 to December 2012, 12 patients with large substernal thyroid goiter who underwent surgery in our Department were enrolled in the study. Their medical records were retrospectively analyzed. Collar-shaped incision was adequate for resection of the lesions in 10 (83%) patients, while two (17%) patients required combined cervical-thoracic incision. In addition, one case was subjected to postoperative tracheotomy. Transient hypocalcaemia occurred in one case. The incidence of transient hoarseness, tracheomalacia and hypothyroidism was 8.3%. There was no perioperative bleeding, thyroid storm as well as other serious complications. All patients were clinically cured. Therefore, cervical collar incision is nearly always adequate for most cases of larger substernal goiter, and sternotomy can be avoided. Furthermore, the application of intraoperative ultrasonic knife can effectively reduce intraoperative and postoperative complications. Aggressive perioperative management is crucial for the successful removal of large substernal goiter.

Incidencia de granulomas en el lecho tiroideo con el uso de bisturí ultrasónico en pacientes sometidos a tiroidectomía total por cáncer / Postoperative thyroid bed granuloma incidence using ultrasonic knife in total thyroidectomy in cancer patients

Background: The postoperative thyroid bed granuloma incidence is high and it is an adittional difficulty for the ultrasound differential diagnosis of eventual local cancer recurrence. The ultrasonic knife utilization eventually can reduce the incidence of these granuloma when is compare with other traditional ligatures methods. Objective: to evaluate the postoperative thyroid bed granuloma incidence with the ultrasonic knife utilization, detected by ultrasound. Methods: retrospective study of 57 evaluable thyroidectomy performed for cancer between March and September 2010. In 46 patients were used traditional ligatures (silk or linen) and in 11, ultrasonic knife. Results: of the 57 patient included, 47 were females. The age average was 44 years old. Postoperative thyroid bed granuloma incidence was 36.3 percent (CI95 percent, 7.9 percent-64.7 percent) in the group where ultrasonic knife was used and 36.9 percent (IC95 percent, 23.0 percent-50.9 percent) in which traditional ligatures were used. No statistical difference was found (p = 0.974). Conclusions: The ultrasonic knife utilization had not reduced the postoperative thyroid bed granuloma incidence, when was compared with conventional ligatures. In this sense, this device is probably unable to add benefits for the differential diagnosis of thyroid cancer local recurrence.

Introducción: La incidencia de granulomas postoperatorios en el lecho tiroideo es alta y dificulta el diagnóstico diferencial ecográfico de posibles recidivas locales en cáncer. La utilización de bisturí ultrasónico disminuiría la incidencia de estos granulomas en comparación con métodos de sutura y hemostasia tradicionales con ligaduras. Objetivo: Evaluar si el uso de bisturí ultrasónico disminuye la incidencia de granulomas postoperatorios en el lecho tiroideo, que se detectan ecográficamente. Métodos: Retrospectivamente se revisaron los hallazgos ecográficos postoperatorios de 57 pacientes evaluables con cáncer de tiroides operados entre marzo y septiembre de 2010. En 46 pacientes se utilizó ligaduras (lino o seda) y en 11, bisturí ultrasónico. Resultados: De los 57 pacientes, 47 fueron mujeres. La edad promedio fue 44 años. La incidencia de granulomas fue 36,3 por ciento (IC95 por ciento de 7,9 por ciento-64,7 por ciento) en los pacientes en que se utilizó bisturí ultrasónico y 36,9 por ciento (IC95 por ciento de 23,0 por ciento-50,9 por ciento) en los pacientes en que se utilizó ligadura convencional. No hubo diferencia estadística (p = 0,974). Conclusiones: El uso de bisturí ultrasónico no disminuyó la incidencia de granulomas del lecho tiroideo, comparado con suturas convencionales. De esta forma, este recurso no aportaría beneficio en la diferenciación ecográfica de nódulos en el lecho tiroideo que pueden corresponder a recidivas tumorales o granulomas cicatriciales.

Examining method and equipment of ultrasonic knife frequency / 医疗卫生装备

Objectives To detect ultrasonic knife frequency and correct the result.Methods Oscillography analysis law was adopted to determine the frequency.Results Oscillography analysis law was practical for the determination of ultrasonic knife frequency.Conclusion This paper realizes the quantitative detection of ultrasonic knife frequency without related national standard and industrial standard.