New type of laryngeal mask is mainly composed of a cover body and a ventilation pipe, tube drainage channels and air pressure indicating device, the mask body consists of cup and air ventilation tube has a gas outlet, the upper end of the breathing circuit interface, ventilation tube within the lumen of the tube drainage channels, drainage tube for gastric tube drainage channel opening at the upper end of the entrance end the opening of gastric tube drainage outlet, the air pressure indicating device is composed of a pilot balloon and a check valve, the lower end of the tongue cup narrow form, without air bag cover, a terminal stomach tube for export. The lower part of the formation of laryngeal mask cup narrow tongue end, no air cover tongue at the end of this design can smoothly pass through the narrow part of the esophagus in the entrance placement, reduce the throat cover body height, the rate will be significantly improved, thereby reducing the possibility of gas into the esophagus and stomach, increase the accuracy and stability of digital model ProSeal laryngeal mask has the function of drainage, to further increase the use of safety.
【技术实现步骤摘要】
新型双管喉罩
本专利技术属于临床麻醉领域,主要用于全身麻醉和需要控制呼吸的急症患者的声门上通气,并可以进行胃管引流。
技术介绍
喉罩属于声门上通气装置。由于喉罩置入较气管插管刺激小、并发症发生率低,在临床麻醉中成为全身麻醉首选的通气装置。英国皇家麻醉学院和困难气道学会进行的第四次全国调查项目(NAP4)中全身麻醉中喉罩占比56.2%。并且在困难气道中占据重要地位,最新的困难气道指南指出,在尝试气管插管失败后,立即采用声门上通气装置给患者供氧。双管喉罩在喉罩远端有胃管吸引通道,可以使用更高的通气压,适用于肥胖和腹腔镜手术的全麻患者,因而,具有明显的优势。然而,市场销售的双管喉罩有两个缺点,首先是充气套囊到达喉罩尖端,在充气时因不对称扩张或因卷曲等原因容易造成漏气,气体则会漏入食管和胃部常常造成返流误吸,引起严重的临床并发症;其次是喉罩中下部宽度过大,不容易通过食道入口而无法到达合适位置,这就给喉罩的临床使用造成了一定的困难,并且有一定的失败率。因而,本人在临床需求的基础上,根据喉结构特点设计出基于生理结构的新型双管喉罩。
技术实现思路
一种新型双管喉罩,由罩体、通气管、胃管引流通道和气囊压力指示装置组成,罩体由罩杯和气囊组成,通气管下端有气体出口,上端有呼吸回路接口,通气管管腔内有胃管引流通道,胃管引流通道上端开口为胃管引流入口,下端开口为胃管引流出口,气囊压力指示装置由指示气囊和止回阀组成,罩杯下部缩窄形成舌形末端,无气囊覆盖,末端为胃管引流出口。新型双管喉罩根据临床使用过程中问题启发,基于人体咽部铸型设计而成,喉罩罩杯下部缩窄形成舌形末端,舌形末端没有气囊覆 ...
【技术保护点】
一种新型双管喉罩,所述新型双管喉罩由罩体、通气管、胃管引流通道和气囊压力指示装置组成,罩体由罩杯(8)和气囊(6)组成,通气管(5)下端有气体出口(7),上端有呼吸回路接口(1),通气管管腔内有胃管引流通道(11),胃管引流通道上端开口为胃管引流入口(2),下端开口为胃管引流出口(10),气囊压力指示装置由指示气囊(3)和止回阀(4)组成,罩杯(8)下部缩窄形成舌形结构(9),无气囊覆盖,末端为胃管引流出口(10)。
【技术特征摘要】
1.一种新型双管喉罩,所述新型双管喉罩由罩体、通气管、胃管引流通道和气囊压力指示装置组成,罩体由罩杯(8)和气囊(6)组成,通气管(5)下端有气体出口(7),上端有呼吸回路接口(1),通气管管腔内有胃管引流通道(...
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