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Continuous dual-wavelength high-intensive Nd:YAG laser in operative urology

机译:连续双波长高强度Nd:YAG激光在泌尿外科的应用

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Abstract: A ruby laser with a 0.694 mkm wavelength was used as a source of a new model of laser lithotriptor. The optical irradiation parameters selected included 1 mks duration pulse, frequency from 1 to 5 Hz, energy at an output of up to 120 mJ, transmitted via light guide quartz fiber of 400 kmk. The tip of the light guide was directed to the calculus through a catheterized cystoscope. Light guide position control was done by the presence of a specific acoustic signal accompanying plasma formation. Plasma is not formed by laser action on the ureter wall. In doubtful cases we used roentgenological examination. After lithotripsy and direct processing by irradiation, histological investigations of the ureter wall showed only slight submucosal hemorrhage or revealed no changes. Implantation of the calculus and fiber particles into the ureter wall was not observed. Twenty-nine patients were subjected to lithotripsy of calculus (oxalates, urates, phosphates) in the low and mid-ureter. Usually from 1000 to 3000 impulses were used to destroy the calculus. Calculus fragments passed without assistance (13 patients) or were removed by extractors (7 patients). The recovery of passing of urine and removal of renal colic were observed during lithotripsy if obturation had occurred (8 patients). Ureteral perforation, blood loss, and acute pyelonephritis did not occur.!0
机译:摘要:使用波长为0.694 mkm的红宝石激光器作为新型激光碎石机的光源。所选的光学辐照参数包括1 mks的持续时间脉冲,1到5 Hz的频率,高达120 mJ的输出能量,通过400 kmk的导光石英纤维传输。通过导管膀胱镜将光导的尖端对准结石。通过伴随等离子体形成的特定声信号的存在来完成光导位置的控制。血浆不是通过激光作用在输尿管壁上形成的。在可疑的情况下,我们使用了X光检查。经碎石术和放射线直接处理后,对输尿管壁的组织学检查仅显示出轻微的粘膜下出血或无变化。未观察到牙结石和纤维颗粒植入输尿管壁。 29名患者在输尿管中低段进行了结石碎石术(草酸盐,尿酸盐,磷酸盐)。通常使用1000到3000个脉冲来破坏微积分。牙石碎片在没有帮助的情况下通过(13例),或被提取器去除(7例)。如果发生阻塞,则在碎石术中观察到尿通过恢复和肾绞痛的清除(8例)。没有发生输尿管穿孔,失血和急性肾盂肾炎。!0

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