A negative pressure drainage pipe includes an outer tube and an inner tube arranged in an outer tube. The head end of the outer tube is closed, the side wall of the head end of the outer tube is provided with several drainage holes, and a gap between the outer wall of the inner tube and the inner wall of the outer tube forms a drainage chamber. The drainage holes are concentrated on the drainage section of the outer tube, the drainage holes are conical holes, and the diameter of the outer wall opening of the drainage hole is larger than that of the inner wall opening. Diameter, the edge of the drainage hole is provided with more than two incisions; one end of the inner tube inserted into the outer tube is provided with a balloon which expands the drainage hole outward, and the balloon is cylindrical. The operation method of the utility model stops negative pressure drainage and inflates the air bag when the drainage hole is blocked; after the air bag expands, the drainage section of the external pipe expands outwards, thereby opening the drainage hole, so that the blockage stuck at the drainage hole can be separated from the drainage hole and the drainage capacity of the drainage hole can be restored.
【技术实现步骤摘要】
一种负压引流管
本技术涉及医疗器械,尤其是一种负压引流管。
技术介绍
腹部外科术后腹腔渗血渗液、积脓感染等情况非常常见,常在腹腔内或手术野内积聚,损伤组织、继发感染或加剧感染,因此需要在腹腔内放置一引流物将腹腔脓液和坏死组织从腹腔引流到体外,防治感染扩散,促使手术野死腔缩小或闭合、促进腹腔内吻合口和切口愈合。例如消化道瘘时,漏出到腹腔的液体主要是胃液、肠液、胰液、胆汁等消化液,对吻合口和腹腔脏器腐蚀性较强;消化液无法排除干净时,腹腔感染自然无可避免,炎症、组织坏死以及脓肿在腹腔快速形成,大量渗出的炎性坏死物质和肠内容物容易引起引流管侧孔阻塞,进一步加重消化液积聚及腹腔感染,形成恶性循环。冲洗和引流可稀释腹腔脓液和坏死物质并引出,减少漏出的消化液及形成的脓液在腹腔的聚集,减少毒素的吸收、减轻消化液对组织和肠壁的腐蚀,并降低腹腔感染的发生风险或使感染得到有效的控制,从而降低脓毒血症、感染性休克、全身炎症反应综合征的发生风险,并加速瘘口愈合的进程。而瘘与感染相互促进,在发生吻合口瘘的患者中,感染是造成患者死亡的主要因素,如不能引流充分,感染就无法控制,患者死亡风险居高不 ...
【技术保护点】
1.一种负压引流管,包括外管和设于外管内的内管,所述外管的头端封闭,外管的头端侧壁设有若干引流孔,内管外壁与外管内壁之间设有间隙形成引流腔室;其特征在于:所述引流孔集中分布在外管的引流段上,所述引流孔为锥形孔,引流孔在外管的外壁开口直径大于内壁开口直径,引流孔的边缘设有两条以上的切口;所述内管插入外管的一端外壁设有将引流孔向外扩张的气囊,所述气囊为圆柱状。
【技术特征摘要】
1.一种负压引流管,包括外管和设于外管内的内管,所述外管的头端封闭,外管的头端侧壁设有若干引流孔,内管外壁与外管内壁之间设有间隙形成引流腔室;其特征在于:所述引流孔集中分布在外管的引流段上,所述引流孔为锥形孔,引流孔在外管的外壁开口直径大于内壁开口直径,引流孔的边缘设有两条以上的切口;所述内管插入外管的一端外壁设有将引流孔向外扩张的气囊,所述气囊为圆柱状。2.根据权利要求1所述的一种负压引流管,其特征在于:所述气囊设在对应的引流段内,气囊的长度与引流段的长度相似。3.根据权利要求2所述的一种负压引流...
【专利技术属性】
技术研发人员:刘晓莉,
申请(专利权)人:广州市花都区人民医院,
类型:新型
国别省市:广东,44
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