BACKGROUND Endoscopic submucosal dissection(ESD)can be used for the en-bloc removal of superficial rectal lesions;however,the lack of a traction system makes the procedure long and difficult in the presence of extensi...BACKGROUND Endoscopic submucosal dissection(ESD)can be used for the en-bloc removal of superficial rectal lesions;however,the lack of a traction system makes the procedure long and difficult in the presence of extensive lesions.CASE SUMMARY A large polyp occupying 2/3 of the rectal circumference and extending 5 cm in length was removed by ESD with the help of laparoscopic forceps introduced via trans-anal rectoscopic assisted minimally invasive surgery,a disposable platform designed to aid in transanal minimally invasive surgery.Traction of the polyp by forceps during the operation was dynamic,and applied at various points and in various directions.The polyp was removed en-bloc without complications in 1 h and 55 min.A sigmoidoscopy performed 50 d later showed normal healing without polyp recurrence.CONCLUSION The technique presented here could overcome the issues caused by lack of traction during ESD for rectal lesions.展开更多
In order to restore force sensation to robot-assisted minimally invasive surgery(RMIS),design and performance evaluation of a miniature 6-axis force/torque sensor for force feedback is presented.Based on the resistive...In order to restore force sensation to robot-assisted minimally invasive surgery(RMIS),design and performance evaluation of a miniature 6-axis force/torque sensor for force feedback is presented.Based on the resistive sensing method,a flexural-hinged Stewart platform is designed as the flexible structure,and a straightforward optimization method considering the force and sensitivity isotropy of the sensor is proposed to determine geometric parameters which are best suited for the given external loads.The accuracy of this method is preliminarily discussed by finite element methods(FEMs).The sensor prototype is fabricated with the development of the electronic system.Calibration and dynamic loading tests for this sensor prototype are carried out.The working ranges of this sensor prototype are 30 N and 300 N·mm,and resolutions are 0.08 N in radial directions,0.25 N in axial direction,and 2.4 N·mm in rotational directions.It also exhibits a good capability for a typical dynamic force sensing at a frequency close to the normal heart rate of an adult.The sensor is compatible with surgical instruments for force feedback in RMIS.展开更多
AIM To investigate the role of minimally invasive surgery for gastric cancer and determine surgical, clinical, and oncological outcomes.METHODS This is a propensity score-matched case-control study, comparing three tr...AIM To investigate the role of minimally invasive surgery for gastric cancer and determine surgical, clinical, and oncological outcomes.METHODS This is a propensity score-matched case-control study, comparing three treatment arms: robotic gastrectomy(RG), laparoscopic gastrectomy(LG), open gastrectomy(OG). Data collection started after sharing a specific study protocol. Data were recorded through a tailored and protected web-based system. Primary outcomes: harvested lymph nodes, estimated blood loss, hospital stay, complications rate. Among the secondary outcomes, there are: operative time, R0 resections, POD of mobilization, POD of starting liquid diet and soft solid diet. The analysis includes the evaluation of type and grade of postoperative complications. Detailed information of anastomotic leakages is also provided.RESULTS The present analysis was carried out of 1026 gastrectomies. To guarantee homogenous distribution of cases, patients in the RG, LG and OG groups were 1:1:2 matched using a propensity score analysis with a caliper = 0.2. The successful matching resulted in a total sample of 604 patients(RG = 151; LG = 151; OG = 302). The three groups showed no differences in all baseline patients characteristics, type of surgery(P = 0.42) and stage of the disease(P = 0.16). Intraoperative blood loss was significantly lower in the LG(95.93 ± 119.22) and RG(117.91 ± 68.11) groups compared to the OG(127.26 ± 79.50, P = 0.002). The mean number of retrieved lymph nodes was similar between the RG(27.78 ± 11.45), LG(24.58 ± 13.56) and OG(25.82 ± 12.07) approach. A benefit in favor of the minimally invasive approaches was found in the length of hospital stay(P < 0.0001). A similar complications rate was found(P = 0.13). The leakage rate was not different(P = 0.78) between groups.CONCLUSION Laparoscopic and robotic surgery can be safely performed and proposed as possible alternative to open surgery. The main highlighted benefit is a faster postoperative functional recovery.展开更多
The surgical management of complicated and recurrent inflammatory bowel disease(IBD),has remained a challenge.Minimally invasive surgery(MIS),in the form of laparoscopic resections,single port approach and robotic-ass...The surgical management of complicated and recurrent inflammatory bowel disease(IBD),has remained a challenge.Minimally invasive surgery(MIS),in the form of laparoscopic resections,single port approach and robotic-assisted dissections in the management of IBD,have been examined in several prospective studies.All of them have shown advantages over open surgeryin terms of reduction of physical trauma of surgery,recovery time,better cosmetic outcomes and shorter hospitalization.However,it is important to appreciate that not all patients with IBD are suitable for MIS,so a combination of both open and MIS should be adopted to achieve optimum outcomes.A review on this subject performed by Neumann et al in this issue of World Journal of Gastrointestinal Pharmacology and Therapeutics have provided evidence in support of the contemporary practice of MIS in the management of IBD and the accompanying commentary further critically evaluates their application in clinical practice.展开更多
目的探讨关节镜辅助复位内固定(arthroscopically-assisted reduction and internal fixation,ARIF)结合加速康复外科(enhanced recovery after surgery,ERAS)理念与开放复位内固定(open reduction and internal fixation,ORIF)治疗胫...目的探讨关节镜辅助复位内固定(arthroscopically-assisted reduction and internal fixation,ARIF)结合加速康复外科(enhanced recovery after surgery,ERAS)理念与开放复位内固定(open reduction and internal fixation,ORIF)治疗胫骨平台后外侧骨折的临床疗效差异。方法回顾性选择2020年1月至2022年11月徐州市中心医院骨科胫骨平台后外侧骨折患者70例,根据治疗方法分为ARIF组(结合ERAS,n=32)和ORIF组(未结合ERAS,n=38)。所有患者住院后均通过影像学检查评估骨折类型,比较两组患者的手术时间、住院时间,采用视觉模拟量表(visual analogue scale,VAS)评估患者术后早期疼痛,美国特种外科医院(hospital for special surgery,HSS)评分评估患者术后3个月膝关节功能,比较两组患者术后6个月双侧大腿周径差值。结果ARIF组患者的手术时间显著短于ORIF组[(67.84±9.89)min vs(85.16±9.18)min,P<0.001],住院时间显著短于ORIF组[(7.13±1.41)d vs(8.74±1.84)d,P<0.001]。术后第3天,ARIF组的VAS评分显著低于ORIF组[(4.00±1.44)分vs(5.39±1.24)分,P<0.001]。术后3个月,ARIF组患者的膝关节功能显著优于ORIF组,术后6个月髌骨上10 cm大腿周径差值显著小于ORIF组(P<0.001)。结论与ORIF相比,接受ARIF结合ERAS治疗胫骨平台后外侧骨折的患者术后恢复更快、住院时间更短、临床疗效更确切。展开更多
文摘BACKGROUND Endoscopic submucosal dissection(ESD)can be used for the en-bloc removal of superficial rectal lesions;however,the lack of a traction system makes the procedure long and difficult in the presence of extensive lesions.CASE SUMMARY A large polyp occupying 2/3 of the rectal circumference and extending 5 cm in length was removed by ESD with the help of laparoscopic forceps introduced via trans-anal rectoscopic assisted minimally invasive surgery,a disposable platform designed to aid in transanal minimally invasive surgery.Traction of the polyp by forceps during the operation was dynamic,and applied at various points and in various directions.The polyp was removed en-bloc without complications in 1 h and 55 min.A sigmoidoscopy performed 50 d later showed normal healing without polyp recurrence.CONCLUSION The technique presented here could overcome the issues caused by lack of traction during ESD for rectal lesions.
基金Project(SS2012AA041601)supported by National High Technology Research and Development Program of ChinaProject(81201150)supported by the National Natural Science Foundation of China
文摘In order to restore force sensation to robot-assisted minimally invasive surgery(RMIS),design and performance evaluation of a miniature 6-axis force/torque sensor for force feedback is presented.Based on the resistive sensing method,a flexural-hinged Stewart platform is designed as the flexible structure,and a straightforward optimization method considering the force and sensitivity isotropy of the sensor is proposed to determine geometric parameters which are best suited for the given external loads.The accuracy of this method is preliminarily discussed by finite element methods(FEMs).The sensor prototype is fabricated with the development of the electronic system.Calibration and dynamic loading tests for this sensor prototype are carried out.The working ranges of this sensor prototype are 30 N and 300 N·mm,and resolutions are 0.08 N in radial directions,0.25 N in axial direction,and 2.4 N·mm in rotational directions.It also exhibits a good capability for a typical dynamic force sensing at a frequency close to the normal heart rate of an adult.The sensor is compatible with surgical instruments for force feedback in RMIS.
基金Supported by CARIT Foundation(Fondazione Cassa di Risparmio di Terni e Narni),No.0024137
文摘AIM To investigate the role of minimally invasive surgery for gastric cancer and determine surgical, clinical, and oncological outcomes.METHODS This is a propensity score-matched case-control study, comparing three treatment arms: robotic gastrectomy(RG), laparoscopic gastrectomy(LG), open gastrectomy(OG). Data collection started after sharing a specific study protocol. Data were recorded through a tailored and protected web-based system. Primary outcomes: harvested lymph nodes, estimated blood loss, hospital stay, complications rate. Among the secondary outcomes, there are: operative time, R0 resections, POD of mobilization, POD of starting liquid diet and soft solid diet. The analysis includes the evaluation of type and grade of postoperative complications. Detailed information of anastomotic leakages is also provided.RESULTS The present analysis was carried out of 1026 gastrectomies. To guarantee homogenous distribution of cases, patients in the RG, LG and OG groups were 1:1:2 matched using a propensity score analysis with a caliper = 0.2. The successful matching resulted in a total sample of 604 patients(RG = 151; LG = 151; OG = 302). The three groups showed no differences in all baseline patients characteristics, type of surgery(P = 0.42) and stage of the disease(P = 0.16). Intraoperative blood loss was significantly lower in the LG(95.93 ± 119.22) and RG(117.91 ± 68.11) groups compared to the OG(127.26 ± 79.50, P = 0.002). The mean number of retrieved lymph nodes was similar between the RG(27.78 ± 11.45), LG(24.58 ± 13.56) and OG(25.82 ± 12.07) approach. A benefit in favor of the minimally invasive approaches was found in the length of hospital stay(P < 0.0001). A similar complications rate was found(P = 0.13). The leakage rate was not different(P = 0.78) between groups.CONCLUSION Laparoscopic and robotic surgery can be safely performed and proposed as possible alternative to open surgery. The main highlighted benefit is a faster postoperative functional recovery.
文摘The surgical management of complicated and recurrent inflammatory bowel disease(IBD),has remained a challenge.Minimally invasive surgery(MIS),in the form of laparoscopic resections,single port approach and robotic-assisted dissections in the management of IBD,have been examined in several prospective studies.All of them have shown advantages over open surgeryin terms of reduction of physical trauma of surgery,recovery time,better cosmetic outcomes and shorter hospitalization.However,it is important to appreciate that not all patients with IBD are suitable for MIS,so a combination of both open and MIS should be adopted to achieve optimum outcomes.A review on this subject performed by Neumann et al in this issue of World Journal of Gastrointestinal Pharmacology and Therapeutics have provided evidence in support of the contemporary practice of MIS in the management of IBD and the accompanying commentary further critically evaluates their application in clinical practice.
文摘目的探讨关节镜辅助复位内固定(arthroscopically-assisted reduction and internal fixation,ARIF)结合加速康复外科(enhanced recovery after surgery,ERAS)理念与开放复位内固定(open reduction and internal fixation,ORIF)治疗胫骨平台后外侧骨折的临床疗效差异。方法回顾性选择2020年1月至2022年11月徐州市中心医院骨科胫骨平台后外侧骨折患者70例,根据治疗方法分为ARIF组(结合ERAS,n=32)和ORIF组(未结合ERAS,n=38)。所有患者住院后均通过影像学检查评估骨折类型,比较两组患者的手术时间、住院时间,采用视觉模拟量表(visual analogue scale,VAS)评估患者术后早期疼痛,美国特种外科医院(hospital for special surgery,HSS)评分评估患者术后3个月膝关节功能,比较两组患者术后6个月双侧大腿周径差值。结果ARIF组患者的手术时间显著短于ORIF组[(67.84±9.89)min vs(85.16±9.18)min,P<0.001],住院时间显著短于ORIF组[(7.13±1.41)d vs(8.74±1.84)d,P<0.001]。术后第3天,ARIF组的VAS评分显著低于ORIF组[(4.00±1.44)分vs(5.39±1.24)分,P<0.001]。术后3个月,ARIF组患者的膝关节功能显著优于ORIF组,术后6个月髌骨上10 cm大腿周径差值显著小于ORIF组(P<0.001)。结论与ORIF相比,接受ARIF结合ERAS治疗胫骨平台后外侧骨折的患者术后恢复更快、住院时间更短、临床疗效更确切。
