CN106667469A - 环形标记斜面钝头套管动脉留置针 - Google Patents
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Abstract
本发明公开了一种环形标记斜面钝头套管动脉留置针,在距针芯末端和套管末端3厘米范围内分别设置两条环形标记线,在针芯与套管头端齐平时,针芯标记线与套管标记线两两重合,从而对套管和针芯的相对位置进行精确定位,并将套管部件头端由直面调整为斜面,进一步提高套管与针芯进入血管的同步性,而斜面尖头可能加大套管头端穿破血管的几率,因此,套管部件头端采用了斜面钝头的设计。本发明可确保针芯头端位置的高度统一,更有效地消除了传统动脉留置针在穿刺时针芯套管头端不齐平和相对位置难估测的缺陷,使外周动脉留置针置入成功率增高,减少并发症的发生。
Description
技术领域
本发明医疗用品领域,具体说是一种环形标记斜面钝头套管动脉留置针。
背景技术
血压是临床评价危重症患者的重要监测指标,但与无创监测相比,经外周动脉置入留置针后实时监测有创血压,更能迅速直观地反映压力波和血压变化情况,为患者临床诊治提供可靠数据。目前临床外周动脉穿刺常用Seldinger法,即用带空心钢针针芯的动脉留置针穿破血管前壁,进入血管内时可见血液从针尾喷出,退出针芯,送入套管,但现有的动脉留置针设计有一定缺陷,所以临床应用中发现一些问题。外周动脉本身较细,以动脉置管最常用的桡动脉为例,中国男性桡动脉直径为2.7±0.4mm,女性为2.4±0.4mm,穿刺时疼痛刺激后容易痉挛,加大穿刺难度,而目前临床常用动脉留置针的针芯头端与套管头端并不齐平,针芯长,套管短,之间有约1毫米距离,而且针芯头端是斜面,套管头端是直面,所以临床应用时常会发现,针芯已进入动脉,并可见血液由针尾喷出,但此时套管头端可能尚未进入桡动脉,所以退出针芯后套管仍不见回血,会导致穿刺失败。临床为解决这一问题,在针尾喷血后,针芯与套管再次向前稍作推送,使针芯前伸,套管进入动脉后再撤出针芯,但新的问题在于,套管与针芯的距离在针体并无提示,所以具体推送距离很难估测,而外周动脉本身直径较小,所以这一操作中前伸的针芯可能使血管透壁,导致穿刺失败,甚至因动脉透壁性损伤,增大局部血肿几率,同时疼痛刺激可导致外周动脉痉挛,影响二次穿刺,严重者会发生假性动脉瘤,被迫更换穿刺位置。
发明内容
综上所述,为了克服现有动脉留置针在穿刺过程中针芯与套管头端不齐平,送入距离有差异,针体无针芯与套管距离提示而导致针芯套管不能同步进入血管,影响穿刺成功率,增加并发症发生率等缺陷,本发明的目的在于提供一种环形标记斜面钝头套管动脉留置针,该留置针将现有的动脉留置针设计有针体环形标记,同时套管头端改为斜面的改进方式,从而使针芯与套管同步进入血管,提高穿刺成功率,减少并发症的发生。
本发明的目的是通过以下技术来实现的:
一种环形标记斜面钝头套管动脉留置针,包括套管和针芯,套管的管体和针芯的针体上均设有环标线;所述套管自柄至尖设置有套管第一环标线和套管第二环标线;所述针芯自柄至尖设置有针芯第一环标线和针芯第二环标线;所述套管的头端设置为斜面钝头,其倾斜角度与针芯头端的倾斜角度一致;所述套管和针芯重合时,套管第一环标线与针芯第一环标线重合,套管第二环标线与针芯第二环标线重合。
本发明的有点及有益效果是:
1、本发明将套管部件头端调整为斜面,与针芯部件头端斜面的角度一致,进一步提高套管与针芯进入血管的同步性,斜面箭头可能加大套管头端穿破血管的几率,从而提高穿刺成功率,减少并发症的发生。
2、本发明在留置针针体的针芯和针套均设计有环形标记,将环形标记应用在动脉留置针后,可以方便的根据标记线重合程度,判断针芯入血管后套管部件是否已跟入血管,尤其是套管头端改为斜面钝头,能够保证针芯和套管位置的一致性,从而使外周动脉留置针置入成功率增高,并发症减少。
3、本发明的套管头端设置为斜面钝头,可以在保证套管与针芯同步进入血管的前提下,预防套管头端穿破血管,引起局部出血等并发症。
附图说明
图1为本发明的结构示意图。
图2为针芯与针套的尖端未重合时的示意图。
图3为针芯与针套的尖端重合时的示意图。
图中:1-套管、2-针芯、11-套管第一环标线、12-套管第二环标线、13-套管斜面头端短点、14-套管斜面头端长点、21-针芯第一环标线、22-针芯第二环标线、23-针芯斜面头端短点、24-针芯斜面头端长点。
具体实施方式
下面结合附图对本发明做进一步说明:
如图1所示,一种环形标记斜面钝头套管动脉留置针,包括套管1和针芯2,所述套管1的管体和针芯2的针体上均设有环标线;所述套管1自柄至尖设置有套管第一环标线11和套管第二环标线12;所述针芯2自柄至尖设置有针芯第一环标线21和针芯第二环标线22;所述套管1的头端设置为斜面钝头,其倾斜角度与针芯头端的倾斜角度一致;所述套管1和针芯2重合时,套管第一环标线11与针芯第一环标线21重合,套管第二环标线12与针芯第二环标线22重合。
实施例
环形标记斜面钝头套管动脉留置针包括套管1和针芯2,其中套管1为透明体,自柄至尖设置有套管第一环标线11和套管第二环标线12,套管头端为斜面,并采用钝头设计,分别设置为套管斜面头端短点13和套管斜面头端长点14,针芯2自柄至尖设置有针芯第一环标线21和针芯第二环标线22,针芯2头端为斜面,分别设置为针芯斜面头端短点23和针芯斜面头端长点24。
进行桡动脉穿刺时,常规消毒皮肤,并行局部麻醉,左手食、中指轻按于桡动脉搏动最强处,右手持套管1和针芯2组合后的动脉留置针,与皮肤呈35°-45°,针尖斜面向上,向动脉最强搏动点刺入,若可见鲜红色血液从针芯2尾端喷出,说明针芯2斜面头端长点24已完全进入动脉,而针芯斜面头端短点23和针芯斜面头端长点24组成的斜面已部分进入动脉,则将动脉留置针组合尾端轻轻下压,固定针芯2的位置,将套管1轻轻向前推送,确保套管第一环标线11和针芯第一环标线21完全重合,套管第二环标线12和针芯第二环标线22完全重合,此时套管斜面头端短点13和套管斜面头端长点14组成的斜面,与针芯2头端的斜面完全重合,说明针芯已送入动脉,而套管斜面头端长点14设置为钝头,降低了套管1头端穿破血管引起并发症的几率。
最后拔出针芯2,可见鲜红色血液从套管1尾端喷出,说明动脉留置针已完全进入动脉,穿刺成功,肝素盐水封管,局部固定。
Claims (1)
1.一种环形标记斜面钝头套管动脉留置针,包括套管(1)和针芯(2),其特征在于:所述套管(1)的管体和针芯(2)的针体上均设有环标线;所述套管(1)自柄至尖设置有套管第一环标线(11)和套管第二环标线(12);所述针芯(2)自柄至尖设置有针芯第一环标线(21)和针芯第二环标线(22);所述套管(1)的头端设置为斜面钝头,其倾斜角度与针芯头端的倾斜角度一致;所述套管(1)和针芯(2)重合时,套管第一环标线(11)与针芯第一环标线(21)重合,套管第二环标线(12)与针芯第二环标线(22)重合。
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3993079A (en) * | 1974-12-14 | 1976-11-23 | Henriques De Gatztanondo Carlo | Device for percutaneous paracentesis, injection, drainage and catheterization |
US5578053A (en) * | 1993-06-24 | 1996-11-26 | Yoon; Inbae | Safety needle instrument having a triggered safety member |
CN105193479A (zh) * | 2015-10-27 | 2015-12-30 | 高友光 | 双针管套叠式神经阻滞穿刺针及其制作方法 |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3993079A (en) * | 1974-12-14 | 1976-11-23 | Henriques De Gatztanondo Carlo | Device for percutaneous paracentesis, injection, drainage and catheterization |
US5578053A (en) * | 1993-06-24 | 1996-11-26 | Yoon; Inbae | Safety needle instrument having a triggered safety member |
CN105193479A (zh) * | 2015-10-27 | 2015-12-30 | 高友光 | 双针管套叠式神经阻滞穿刺针及其制作方法 |
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