Objective: To investigate the feasibility, safety and the clinical value of primary suture following 3-port laparoscopic common bile duct exploration (LCBDE). Methods: From January 2012 to September 2014, 176 patients...Objective: To investigate the feasibility, safety and the clinical value of primary suture following 3-port laparoscopic common bile duct exploration (LCBDE). Methods: From January 2012 to September 2014, 176 patients suffered from choledocholithiasis were treated with primary suture following 3-port LCBDE and the clinical data were retrospectively analyzed. Results: All cases were operated successfully and none was converted to open surgery. The duration of operation was 92.2 ± 18.8 min and the length of postoperative hospital stay was 4.4 ± 3.7 d. Postoperative bile leakage occurred in 2 cases and these patients recovered by simple drainage for 3 to 7 days without re-operation. All patients recovered smoothly without any serious complications. Conclusions: Primary suture following 3-port LCBDE is safe, effective and mini-invasive, which is worthy of further clinical application.展开更多
Objective:To study the differences in the body pain and trauma degree between uniportal and three-portal video-assisted thoracoscopic surgery for the treatment of lung cancer.Methods:A total of 108 patients with non-s...Objective:To study the differences in the body pain and trauma degree between uniportal and three-portal video-assisted thoracoscopic surgery for the treatment of lung cancer.Methods:A total of 108 patients with non-small cell lung cancer who received radical operation in our hospital between February 2013 and February 2016 were selected and divided into the uniportal group (n=52) who received uniportal video-assisted thoracoscopic surgery and the three-portal group (n=56) who received three-portal video-assisted thoracoscopic surgery after the operation methods and related laboratory results were reviewed. Before operation and 24 h after operation, the differences in serum levels of pain mediators, oxidative stress indexes and inflammation indexes were compared between the two groups of patients.Results: Before operation, the differences in serum levels of pain mediators, oxidative stress indexes and inflammation indexes were not statistically significant between the two groups of patients. 24 h after operation, serum pain mediators NE, DA and 5-HT levels of observation group were lower than those of control group;oxidative stress indexes MDA and O2- levels were lower than those of control group while SOD and GSH-Px levels were higher than those of control group;inflammation indexes IL-6, IL-8, CRP and TNF-α levels were lower than those of control group.Conclusion: Uniportal video-assisted thoracoscopic surgery for the treatment of lung cancer causes less surgery trauma, and patients' postoperative pain and systemic inflammatory stress response are lighter.展开更多
The current-pulse load is generally characterized by wide frequency band and pulse variation,when it is directly connected to the power supply bus.The load power is presented as the instantaneous power.In order to bal...The current-pulse load is generally characterized by wide frequency band and pulse variation,when it is directly connected to the power supply bus.The load power is presented as the instantaneous power.In order to balance the instantaneous power difference between the pulse load and the DC bus,a bi-directional DC/DC converter is usually connected in parallel to compensate for the current fluctuation caused by the characteristics of the pulse load.However,there is a large current spike in the bus current in the pre-stage when the pulse load is changed between light and heavy load.In this paper,a three-state dual-inductance bi-directional converter is proposed.In addition,the load current waveform is directly used to control the inductive branch switches,and an adaptive current feedback control strategy based on the valley voltage loop is proposed to control the power switches.The control method is applicable to the arbitrary change of the frequency and power of the pulse load.Finally,the experimental results show that the threestate dual-inductance bi-directional converter not only eliminates excessive bus current spikes,but also improves the transient response of the three-port power supply system.展开更多
Due to the slow dynamic power-regulation characteristics of the electrolyser(EL),a novel integrated three-port DC/DC converter topology based on a phase-shifted full-bridge converter and dual active-bridge converter i...Due to the slow dynamic power-regulation characteristics of the electrolyser(EL),a novel integrated three-port DC/DC converter topology based on a phase-shifted full-bridge converter and dual active-bridge converter is proposed in this paper.Especially,the proposed converter can achieve a fast auxiliary response to the EL.This topology has the features of single-stage conversion,high system integration and compatibility with multiple operation modes.The operational principles and a hybrid modulation scheme of the proposed converter are analysed in detail.In addition,the power-transmission characteristics of each port and the soft-switching range are researched.On these bases,six operation modes suitable for a hydrogen energy-storage system are designed.The simulation and a 2-kW scaled-down experimental prototype are established to verify the feasibility and effectiveness of the proposed topology in different operation modes.展开更多
目的探讨改良三孔法机器人辅助单孔多通道腹腔镜手术在小儿胆总管囊肿根治术中的应用效果。方法2022年3月~2024年6月我科对20例先天性胆总管囊肿行改良三孔法机器人辅助胆总管囊肿根治性切除联合肝总管空肠Roux-en-Y吻合术。单孔多通道...目的探讨改良三孔法机器人辅助单孔多通道腹腔镜手术在小儿胆总管囊肿根治术中的应用效果。方法2022年3月~2024年6月我科对20例先天性胆总管囊肿行改良三孔法机器人辅助胆总管囊肿根治性切除联合肝总管空肠Roux-en-Y吻合术。单孔多通道腹腔镜装置经脐部切口置入,右侧肋缘下和左侧肋缘下分别置入8 mm trocar用于机械臂操作。在机器人对接前预先经脐部单孔装置体外完成空肠-空肠吻合术,对接后机器人腔镜下完成囊肿切除联合肝总管空肠吻合重建等操作。结果20例患儿手术均顺利完成,无中转开腹,无术中输血。手术时间(269.8±23.3)min,机器人操作时间(123.8±11.1)min,术中出血量(8.3±3.9)ml。术后排气时间(30.8±9.8)h,5~6 d拔除腹腔引流管,术后住院7~8 d。术前11例肝功能丙氨酸氨基转移酶和天冬氨酸氨基转移酶升高的患儿术后第7天10例指标降至正常,6例术前胆红素升高的患儿术后第7天4例恢复正常。20例随访3~6个月,腹部超声未见吻合口狭窄、胆管炎或其他严重并发症。结论改良三孔法机器人辅助单孔多通道腹腔镜手术治疗小儿胆总管囊肿安全可行。展开更多
文摘Objective: To investigate the feasibility, safety and the clinical value of primary suture following 3-port laparoscopic common bile duct exploration (LCBDE). Methods: From January 2012 to September 2014, 176 patients suffered from choledocholithiasis were treated with primary suture following 3-port LCBDE and the clinical data were retrospectively analyzed. Results: All cases were operated successfully and none was converted to open surgery. The duration of operation was 92.2 ± 18.8 min and the length of postoperative hospital stay was 4.4 ± 3.7 d. Postoperative bile leakage occurred in 2 cases and these patients recovered by simple drainage for 3 to 7 days without re-operation. All patients recovered smoothly without any serious complications. Conclusions: Primary suture following 3-port LCBDE is safe, effective and mini-invasive, which is worthy of further clinical application.
基金Projects of Natural Science Foundation of China No:81373941.
文摘Objective:To study the differences in the body pain and trauma degree between uniportal and three-portal video-assisted thoracoscopic surgery for the treatment of lung cancer.Methods:A total of 108 patients with non-small cell lung cancer who received radical operation in our hospital between February 2013 and February 2016 were selected and divided into the uniportal group (n=52) who received uniportal video-assisted thoracoscopic surgery and the three-portal group (n=56) who received three-portal video-assisted thoracoscopic surgery after the operation methods and related laboratory results were reviewed. Before operation and 24 h after operation, the differences in serum levels of pain mediators, oxidative stress indexes and inflammation indexes were compared between the two groups of patients.Results: Before operation, the differences in serum levels of pain mediators, oxidative stress indexes and inflammation indexes were not statistically significant between the two groups of patients. 24 h after operation, serum pain mediators NE, DA and 5-HT levels of observation group were lower than those of control group;oxidative stress indexes MDA and O2- levels were lower than those of control group while SOD and GSH-Px levels were higher than those of control group;inflammation indexes IL-6, IL-8, CRP and TNF-α levels were lower than those of control group.Conclusion: Uniportal video-assisted thoracoscopic surgery for the treatment of lung cancer causes less surgery trauma, and patients' postoperative pain and systemic inflammatory stress response are lighter.
基金This work was supported by the National Natural Science Foundation of China under Grant 61601378the Sichuan Science and Technology Program under Grant 2019YJ0237Foundation of Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle,Ministry of Education.
文摘The current-pulse load is generally characterized by wide frequency band and pulse variation,when it is directly connected to the power supply bus.The load power is presented as the instantaneous power.In order to balance the instantaneous power difference between the pulse load and the DC bus,a bi-directional DC/DC converter is usually connected in parallel to compensate for the current fluctuation caused by the characteristics of the pulse load.However,there is a large current spike in the bus current in the pre-stage when the pulse load is changed between light and heavy load.In this paper,a three-state dual-inductance bi-directional converter is proposed.In addition,the load current waveform is directly used to control the inductive branch switches,and an adaptive current feedback control strategy based on the valley voltage loop is proposed to control the power switches.The control method is applicable to the arbitrary change of the frequency and power of the pulse load.Finally,the experimental results show that the threestate dual-inductance bi-directional converter not only eliminates excessive bus current spikes,but also improves the transient response of the three-port power supply system.
基金supported by the National Key R&D Program of China (no.2018YFB1503100)the National Natural Science Foundation of China (no.51907021).
文摘Due to the slow dynamic power-regulation characteristics of the electrolyser(EL),a novel integrated three-port DC/DC converter topology based on a phase-shifted full-bridge converter and dual active-bridge converter is proposed in this paper.Especially,the proposed converter can achieve a fast auxiliary response to the EL.This topology has the features of single-stage conversion,high system integration and compatibility with multiple operation modes.The operational principles and a hybrid modulation scheme of the proposed converter are analysed in detail.In addition,the power-transmission characteristics of each port and the soft-switching range are researched.On these bases,six operation modes suitable for a hydrogen energy-storage system are designed.The simulation and a 2-kW scaled-down experimental prototype are established to verify the feasibility and effectiveness of the proposed topology in different operation modes.
文摘目的探讨改良三孔法机器人辅助单孔多通道腹腔镜手术在小儿胆总管囊肿根治术中的应用效果。方法2022年3月~2024年6月我科对20例先天性胆总管囊肿行改良三孔法机器人辅助胆总管囊肿根治性切除联合肝总管空肠Roux-en-Y吻合术。单孔多通道腹腔镜装置经脐部切口置入,右侧肋缘下和左侧肋缘下分别置入8 mm trocar用于机械臂操作。在机器人对接前预先经脐部单孔装置体外完成空肠-空肠吻合术,对接后机器人腔镜下完成囊肿切除联合肝总管空肠吻合重建等操作。结果20例患儿手术均顺利完成,无中转开腹,无术中输血。手术时间(269.8±23.3)min,机器人操作时间(123.8±11.1)min,术中出血量(8.3±3.9)ml。术后排气时间(30.8±9.8)h,5~6 d拔除腹腔引流管,术后住院7~8 d。术前11例肝功能丙氨酸氨基转移酶和天冬氨酸氨基转移酶升高的患儿术后第7天10例指标降至正常,6例术前胆红素升高的患儿术后第7天4例恢复正常。20例随访3~6个月,腹部超声未见吻合口狭窄、胆管炎或其他严重并发症。结论改良三孔法机器人辅助单孔多通道腹腔镜手术治疗小儿胆总管囊肿安全可行。
