自制网塞在充填式无张力疝修补术中的应用(附60例报告)

目的探讨自制网塞在充填式无张力疝修补术中的应用。方法对我院2003年8月至2006年8月用自制网塞行充填式无张力疝修补术治疗腹股沟疝病人60例的临床资料进行回顾性分析。结果本组手术全部成功,平均手术时间45min,术后阴囊小血肿2例,自行吸收而愈。未见有排斥反应。随访3个月～3年共50例,术后复发2例,为开展手术早期病例。结论自制网塞充填式无张力疝修补术是治疗腹股沟疝的较理想术式,具有费用低,大小适合等优点。

腹腔镜全腹膜外疝修补术结合自制网塞应用于大疝囊腹股沟疝的临床研究

目的探讨腹腔镜完全腹膜外疝修补术(totally extraperitoneal,TEP)结合自制网塞应用于大疝囊腹股沟疝中填塞腹壁缺损的临床价值及疗效。方法将2016年7月至2019年6月上海交通大学医学院附属第九人民医院黄浦分院(原上海市第二人民医院)收治的30例行TEP加自制网塞填塞腹壁缺损修补术的大疝囊腹股沟疝(腹壁缺损≥6cm)患者作为研究组,并将既往收治的30例行单纯平型补片免钉合TEP疝修补的大疝囊腹股沟疝患者作为对照组,对比两组患者的手术时间、住院时间,术后患者恢复情况,术后疼痛等并发症,以及远期疝复发跟踪随访情况。结果两组患者全部顺利完成手术。两组患者的手术时间、住院时间、耗材费用、并发阴囊血肿例数以及术后异物感均无显著性差异(P>0.05)。随访6~36月,两组患者均无术后疼痛;对照组有1例复发(术后11月)。结论对于腹壁缺损≥6cm的大疝囊腹股沟疝,通过修剪合适自制网塞,彻底填塞腹壁缺损处,可达到第二重屏障的功用。网塞充填式TEP是一种更安全、实用、更为理想的疝修补术式。

A new method based on two freedom-degree PD-P flow rate controller for congestion control in computer networks

The rate-based feedback PD-P controller of two freedom-degrees is proposed for the congestion control in computer networks to improve the abilities against disturbance. Moreover, the Dahlin algorithm is used for setting the controller to overcome the adverse effect caused by the propagation delay effectively. The research results show that the proposed scheme not only can make sources respond to the changes of network state more quickly, but also has a good robustness against estimated error of the delay. Then the packet queue level in buffer will be stabilized on the set-point quickly, and the delay and its jitter of the packet queuing will also become smaller. Besides, the flexible bandwidth allotment can be obtained by setting the weight coefficients.