Study of Comparative Experiment for Self-made Foreign Body Retrieval Device and Traditional Foreign Body Retrieval Device in Simulated Human Blood Vessels
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摘要:
目的 比较自制异物抓捕器与传统异物抓捕器抓取模拟人血管内异物的效果。 方法 模拟全身麻醉状态下，通过血管内导引导管将废弃导丝、废弃导管、废弃支架、废弃弹簧圈作为异物留置于模拟人血管内，做成不同异物存留于不同血管部位的异物存留模型。用自制异物抓捕器与传统异物抓捕器对模拟人血管内的异物进行抓取，记录为自制抓捕器组和传统抓捕器组。每组分别进行80次异物抓取操作，比较两组抓取异物的1次取出异物成功率，3次内取出异物成功率，取出异物总体成功率，取出每例异物平均操作时间。 结果 自制抓捕器组较传统抓捕器组有更高的一次取出异物成功率、3次内取出异物成功率和取出异物总体成功率，（96.25% VS 87.50%）（χ2 = 4.103，P = 0.043），差异有统计学意义（P < 0.05），自制抓捕器组较传统抓捕器组有更短的平均操作时间（7.42±1.68）min VS （13.21±5.25）min，（ t = 9.192，P = 0.000）。 结论 在模拟人血管内操作，自制异物抓捕器较传统异物抓捕器能更有效地抓取模拟人血管内异物，成功率更高，操作时间更短。 Abstract:Objective To compare the effect of retrieving foreign bodies for the self-made foreign body retrieval device and the traditional foreign body retrieval device in simulated human blood vessels. Methods Under the simulated general anesthesia, the models were made by placing waste guidewires, waste catheters, waste stents and waste coilings as the foreign bodies in simulated human blood vessels through the guiding catheter. The foreign bodies in the simulated human blood vessels were retrieved by using the self-made foreign body retrieval device and the traditional foreign body retrieval device, which were recorded as the self-made retrieval device group and the traditional retrieval device group. The foreign bodies of each group were retrieved 80 times respectively, and one-time success rate of foreign bodies retrieval, three-time success rate of foreign bodies retrieval, overall success rate of foreign bodies retrieval and average time for retrieving each foreign body were compared between these two groups. Results The self-made retrieval device group had higher one-time success rate, three-time success rate and overall success rate of foreign bodies retrieval than the traditional retrieval device group （96.25% VS 87.50%） （χ2 = 4.103, P = 0.043）. The difference was statistically significant （P < 0.05）. The self-made retrieval device group had shorter average time for retrieving foreign body than the traditional retrieval device group （7.42±1.68）min VS （13.21±5.25）min,（t = 9.192, P = 0.000）. Conclusion Compared with the traditional retrieval device group, The self-made retrieval device group can retrieve intravascular foreign bodies in simulated human more effectively, with higher success rate and shorter operation time. -
图 1 模拟人血管和自制异物抓捕器
A模拟人血管；B自制异物抓捕器
Figure 1. The simulated human blood vessels and the self-made foreign body retrieval devic
表 1 自制抓捕器组与传统抓捕器组取出异物的例数［n（%）］
Table 1. The number of cases of retrieving foreign bodies between the self-made retrieval device group and the traditional retrieval device group［n（%）］
组别 自制抓捕器组 传统抓捕器组 操作次数（次） 80 80 第1次取出异物 58（72.5） 42（52.5）* 第2次取出异物 15（18.8） 14（17.5）* 第3次取出异物 4（5.0） 14（17.5）* 成功取出异物 77（96.3） 70（87.5）* 与自制抓捕器组比较，*P < 0.05。 
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表 2 自制抓捕器组与传统抓捕器组取出每例异物的平均操作时间[（
$\bar x\pm s $ ），min]Table 2. The average time for retrieving each foreign body between the self-made retrieval device group and the traditional retrieval device group[（
$\bar x\pm s $ ），min]组别 自制抓捕器组 传统抓捕器组 操作次数（次） 80 80 取出每例异物平均时间 7.42 ± 1.68 13.21 ± 5.25* 与自制抓捕器组比较，*P < 0.05。
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