Dear Editor,We described an innovative“single self-leading suture technique”for repairing iridodialysis.Instead of moving the needle forth and back,our method is easier to manipulate in the narrow surgical space bet...Dear Editor,We described an innovative“single self-leading suture technique”for repairing iridodialysis.Instead of moving the needle forth and back,our method is easier to manipulate in the narrow surgical space between the cornea and lens,which will decrease the unnecessary complications related to iatrogenic injury.We provide an economical friendly and less time-taking method,which improves the suture accuracy.展开更多
Objective:Cluster needling at scalp acupoints has showed satisfying effects with acute cerebral ischemia in clinic whereas the mechanisms are not yet clear completely.This study investigated the influence of cluster n...Objective:Cluster needling at scalp acupoints has showed satisfying effects with acute cerebral ischemia in clinic whereas the mechanisms are not yet clear completely.This study investigated the influence of cluster needling at scalp acupoints on neurological function,as well as on neurofilament protein 200(NF200)and signal transducer and activator of transcription 3(STAT3)expression,in rats with acute cerebral ischemia.Methods:Fifty-four Sprague-Dawley rats were randomly assigned in equal numbers to the false operation(group F),model(group M),or cluster needling scalp acupuncture(group C)groups.Each group was divided into three subgroups,of six rats each,by acupuncture treatment time(24 h,7 days,and 14 days).The rat local cerebral ischemia model was prepared using a modified suture occlusion method.Group C rats were treated by cluster needling scalp acupuncture,while groups F and M did not receive acupuncture treatment.Neurological effects were evaluated using the Longa score.NF200 and STAT3 expression were measured by western blotting.Results:At 24 h,there were no statistical difference between group C and group M in nerve function(P>.05).On days 7 and 14,nerve function scores in group C were significantly lower than that in group M(respectively were P<.05 and P<.01).In addition,on days 14,expression of NF200 was significantly higher in group C compared with group M(P<.05).Compared with group M,STAT3 expression was also higher in group C on days 7 and 14,although these differences were not statistically significant(both P>.05).Conclusion:Cluster needling scalp acupuncture were efficient in improving nerve function scores in rats with cerebral ischemia,and promoting the recovery of motor function.These improvements were associated with increases in NF200 and STAT3 expression.展开更多
目的比较腹腔镜胆总管探查术中直针法与弯针法两种缝合技术的效果。方法 104例腹腔镜胆总管探查术患者的临床资料,按照术中采用的缝合技术将研究对象分为两组:直针法缝合组50例,弯针法缝合组54例,比较两组患者的手术进行时间、术中出血...目的比较腹腔镜胆总管探查术中直针法与弯针法两种缝合技术的效果。方法 104例腹腔镜胆总管探查术患者的临床资料,按照术中采用的缝合技术将研究对象分为两组:直针法缝合组50例,弯针法缝合组54例,比较两组患者的手术进行时间、术中出血量、胆总管取石情况、术后肛门排气时间、术后下床活动时间、术后并发症发生情况、术后住院时间及住院费用等变量情况。结果两组患者均手术成功,无死亡病例,无中转开腹。直针法缝合组手术时间短于弯针法缝合组手术时间(6.1±1.4 min vs 12.4±2.3 min)(P<0.01);两组的胆总管取石数目、术后肛门排气时间、下床活动时间、发生胆漏数量、住院时间及住院费用差异无统计学意义(P>0.05)。结论直针法缝合技术比弯针法耗时短,具有明显优势。展开更多
初步实现了一个虚拟缝合仿真系统,可以模拟针穿刺柔性体并牵引所附缝合线穿过柔性体的过程。用户通过Phantom Desktop力反馈设备控制虚拟针的运动。柔性体在针和缝合线的作用下会发生变形。缝合线使用非均匀可变长刚性杆模型和FTL(Follo...初步实现了一个虚拟缝合仿真系统,可以模拟针穿刺柔性体并牵引所附缝合线穿过柔性体的过程。用户通过Phantom Desktop力反馈设备控制虚拟针的运动。柔性体在针和缝合线的作用下会发生变形。缝合线使用非均匀可变长刚性杆模型和FTL(Follow the Leader)变形算法。柔性体使用线弹性材料和Tensor-Mass变形算法。针穿刺柔性体时柔性体对针运动的阻力传给力反馈设备,而其反作用力则施加于柔性体之上。缝合线在针的牵引下穿过柔性体形成滑动约束点。缝合线的变形将在滑动约束点产生弹性力作用于柔性体之上,而柔性体的变形则反过来影响滑动约束点的位置。将约束点对应的缝合线顶点编号增加和约束点两侧刚性杆长度调整相结合,实现了缝合线光滑穿过柔性体的效果。最后给出对含有切口形状的柔性体模型进行缝合仿真的实验结果,并讨论未来的改进和发展方向。展开更多
基金Supported by Tianjin Health Research Project(No.TJWJ2022ZD009)Science and Technology Foundation of Tianjin Eye Hospital(No.YKPY2207)Tianjin Key Medical Discipline(Specialty)Construction Project(No.TJYXZDXK-016A).
文摘Dear Editor,We described an innovative“single self-leading suture technique”for repairing iridodialysis.Instead of moving the needle forth and back,our method is easier to manipulate in the narrow surgical space between the cornea and lens,which will decrease the unnecessary complications related to iatrogenic injury.We provide an economical friendly and less time-taking method,which improves the suture accuracy.
基金This study was supported by grants from the National Natural Science Foundation of China(grant No.81473775).
文摘Objective:Cluster needling at scalp acupoints has showed satisfying effects with acute cerebral ischemia in clinic whereas the mechanisms are not yet clear completely.This study investigated the influence of cluster needling at scalp acupoints on neurological function,as well as on neurofilament protein 200(NF200)and signal transducer and activator of transcription 3(STAT3)expression,in rats with acute cerebral ischemia.Methods:Fifty-four Sprague-Dawley rats were randomly assigned in equal numbers to the false operation(group F),model(group M),or cluster needling scalp acupuncture(group C)groups.Each group was divided into three subgroups,of six rats each,by acupuncture treatment time(24 h,7 days,and 14 days).The rat local cerebral ischemia model was prepared using a modified suture occlusion method.Group C rats were treated by cluster needling scalp acupuncture,while groups F and M did not receive acupuncture treatment.Neurological effects were evaluated using the Longa score.NF200 and STAT3 expression were measured by western blotting.Results:At 24 h,there were no statistical difference between group C and group M in nerve function(P>.05).On days 7 and 14,nerve function scores in group C were significantly lower than that in group M(respectively were P<.05 and P<.01).In addition,on days 14,expression of NF200 was significantly higher in group C compared with group M(P<.05).Compared with group M,STAT3 expression was also higher in group C on days 7 and 14,although these differences were not statistically significant(both P>.05).Conclusion:Cluster needling scalp acupuncture were efficient in improving nerve function scores in rats with cerebral ischemia,and promoting the recovery of motor function.These improvements were associated with increases in NF200 and STAT3 expression.
文摘目的比较腹腔镜胆总管探查术中直针法与弯针法两种缝合技术的效果。方法 104例腹腔镜胆总管探查术患者的临床资料,按照术中采用的缝合技术将研究对象分为两组:直针法缝合组50例,弯针法缝合组54例,比较两组患者的手术进行时间、术中出血量、胆总管取石情况、术后肛门排气时间、术后下床活动时间、术后并发症发生情况、术后住院时间及住院费用等变量情况。结果两组患者均手术成功,无死亡病例,无中转开腹。直针法缝合组手术时间短于弯针法缝合组手术时间(6.1±1.4 min vs 12.4±2.3 min)(P<0.01);两组的胆总管取石数目、术后肛门排气时间、下床活动时间、发生胆漏数量、住院时间及住院费用差异无统计学意义(P>0.05)。结论直针法缝合技术比弯针法耗时短,具有明显优势。
文摘初步实现了一个虚拟缝合仿真系统,可以模拟针穿刺柔性体并牵引所附缝合线穿过柔性体的过程。用户通过Phantom Desktop力反馈设备控制虚拟针的运动。柔性体在针和缝合线的作用下会发生变形。缝合线使用非均匀可变长刚性杆模型和FTL(Follow the Leader)变形算法。柔性体使用线弹性材料和Tensor-Mass变形算法。针穿刺柔性体时柔性体对针运动的阻力传给力反馈设备,而其反作用力则施加于柔性体之上。缝合线在针的牵引下穿过柔性体形成滑动约束点。缝合线的变形将在滑动约束点产生弹性力作用于柔性体之上,而柔性体的变形则反过来影响滑动约束点的位置。将约束点对应的缝合线顶点编号增加和约束点两侧刚性杆长度调整相结合,实现了缝合线光滑穿过柔性体的效果。最后给出对含有切口形状的柔性体模型进行缝合仿真的实验结果,并讨论未来的改进和发展方向。
