Episure注射器：一种用于定位硬膜外腔的新型阻力消失注射器。
The Episure syringe: a novel loss of resistance syringe for locating the epidural space.
作者信息
Riley Edward T, Carvalho Brendan
机构信息
Department of Anesthesia, Stanford University Medical Center, Stanford, CA 94305, USA.
出版信息
Anesth Analg. 2007 Oct;105(4):1164-6, table of contents. doi: 10.1213/01.ane.0000281935.78144.82.
INTRODUCTION
The Episure syringe is a unique spring-loaded loss-of-resistance (LOR) syringe with a coaxial compression spring within a Portex Pulsator LOR syringe. This syringe supplies a constant pressure while the operator is advancing the Tuohy needle.
METHODS
We evaluated the syringe using an artificial model of the ligamentum flavum, an anesthetized pig, and women who desired epidural analgesia for labor.
RESULTS
The operator, using the spring-loaded syringe, was able to stop the forward movement of the needle, so that compared with a standard LOR syringe less of the needle protruded out the back of the laboratory model. Satisfactory labor analgesia in the human study and radiograph analyses in the porcine model confirmed epidural placement in all attempts.
CONCLUSION
The spring-loaded syringe is a potentially useful LOR syringe that provides a reliable, objective end-point for identification of the epidural space.
引言
Episure注射器是一种独特的弹簧加载式阻力消失（LOR）注射器，在Portex脉动式LOR注射器内有一个同轴压缩弹簧。在操作人员推进Tuohy针时，该注射器可提供恒定压力。
方法
我们使用黄韧带人工模型、麻醉猪以及希望进行分娩硬膜外镇痛的女性对该注射器进行了评估。
结果
使用弹簧加载式注射器时，操作人员能够阻止针的向前移动，因此与标准LOR注射器相比，实验室模型后方伸出的针较少。人体研究中令人满意的分娩镇痛以及猪模型中的X射线分析证实，所有尝试均成功置入硬膜外导管。
结论
弹簧加载式注射器是一种潜在有用的LOR注射器，可为硬膜外腔的识别提供可靠、客观的终点。
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