锁骨下静脉置管模型中磁场对导丝的影响
目的研究磁场对锁骨下静脉穿刺置管术中导丝的作用原理,降低异位率。方法搭建静脉置管的磁场模型。采用磁场引导法避免导丝异位,即借助钕铁硼磁铁对导丝的吸引力引导导丝走向。研究磁场作用下不同静脉角、导丝顶端不同的钩型及朝向对穿刺成功率的影响。结果距静脉外侧46 mm处放置的磁铁,静脉角≥110°时,提高了穿刺时导丝"J"形钩朝向头臂静脉方向的成功率;对于导丝弯钩朝向胸前,静脉角〈110°时,穿刺成功率有所提高;对于导丝弯钩朝向背部,在所有静脉角情况下均无效果;对于导丝弯钩朝向颈内静脉方向,有些静脉角情况下成功率有一定提高。磁铁有效放置范围在一短边紧邻静脉汇合点,另外两长边分别位于头臂静脉两侧约40 m...
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          | Published in | 上海交通大学学报(医学版) Vol. 36; no. 6; pp. 860 - 865 | 
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| Main Author | |
| Format | Journal Article | 
| Language | Chinese | 
| Published | 
            上海交通大学物理与天文系,上海,200240%上海交通大学医学院附属仁济医院重症医学科,上海,200127%上海交通大学医学院附属仁济医院麻醉科,上海,200127
    
        2016
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| Subjects | |
| Online Access | Get full text | 
| ISSN | 1674-8115 | 
| DOI | 10.3969/j.issn.1674-8115.2016.06.015 | 
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| Summary: | 目的研究磁场对锁骨下静脉穿刺置管术中导丝的作用原理,降低异位率。方法搭建静脉置管的磁场模型。采用磁场引导法避免导丝异位,即借助钕铁硼磁铁对导丝的吸引力引导导丝走向。研究磁场作用下不同静脉角、导丝顶端不同的钩型及朝向对穿刺成功率的影响。结果距静脉外侧46 mm处放置的磁铁,静脉角≥110°时,提高了穿刺时导丝"J"形钩朝向头臂静脉方向的成功率;对于导丝弯钩朝向胸前,静脉角〈110°时,穿刺成功率有所提高;对于导丝弯钩朝向背部,在所有静脉角情况下均无效果;对于导丝弯钩朝向颈内静脉方向,有些静脉角情况下成功率有一定提高。磁铁有效放置范围在一短边紧邻静脉汇合点,另外两长边分别位于头臂静脉两侧约40 mm的80 mm×90 mm矩形区域。结论经锁骨下静脉进行穿刺置管时,磁场的存在能有效提高穿刺成功率。 | 
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| Bibliography: | WANG Jin-hui , HAN Lu-lu, XING Shun-peng, Wen Da-xiang( 1. Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, Chna; 2. Department qf Critical Care Medicine, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China; 3. Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China) 31-2045/R subclavian vein catheterization; misplaced catheters; magnet guide Objective To investigate the effect of magnetic field on guide wire during subclavian vein catheterization(SVC) and decrease the rate of misplacing a catheter.Methods A magnet field model of vein catheterization was built.The magnet field guide method was used to avoid misplacing a catheter,i.e.the direction of guide wire was guided by the attraction of a NdFeB magnet.The effects of different venous angles,wire tips,and directions under the action of magnetic field on the successful puncture rate were explored.Results A NdFeB magnet placing  | 
| ISSN: | 1674-8115 | 
| DOI: | 10.3969/j.issn.1674-8115.2016.06.015 |