The utility model discloses a screw curling adjustable diameter transfusion needle, which solves the problem that the transfusion needle can not be effectively inserted into the needle in the prior art and can easily cause unnecessary injury to patients. The size of the transfusion needle can be changed. By adjusting the screw curling degree of the needle before entering the needle, the size of the needle can be reduced, and the needle can be conveniently inserted into the needle and the pain of the needle can be alleviated. The needle size can be enlarged and normal infusion can be realized by adjusting the spiral curl of the needle again after needle feeding. The technical scheme includes a needle seat and a needle fixed at one end of the needle seat. The cross section of the needle is spiral, and the longitudinal section of the needle is stacked. The needle seat and the outermost layer of the needle are fitted with a limit component, which tightens the outermost layer of the needle to make the needle phase. Neighboring layers are stacked tightly and then in a small diameter state. Limiting parts drive the outermost layer of the needle to expand outward, causing gap between the adjacent layers of the needle and then in a large diameter state.
【技术实现步骤摘要】
一种螺旋卷曲式可调变径输液针
本技术涉及医疗器械
,特别是涉及一种螺旋卷曲式可调变径输液针。
技术介绍
静脉输液是利用大气压和液体静压原理将大量无菌液体、电解质、药物由静脉输入体内的方法。目前,都是通过输液管和输液针向人体内进行静脉输液,供成人使用的输液针头直径一般为0.6~0.8mm,小儿使用的输液针头直径一般为0.5mm左右。实施静脉注射时需要将输液针穿刺人体手背等部位,但有些病人血管很细,扎针时无法快速准确刺入血管,以目前的输液针头对病人造成的刺痛感强烈;尤其是针对小儿患者,其皮下脂肪相对较厚,手背血管不易看清,加之其肢体短小,穿刺部位多靠近关节,不易固定,非常容易造成扎漏,给孩子造成不必要的痛苦,因此小儿患者输液多采用头皮静脉注射,但小儿头皮部分血管也极细,以目前的小儿输液针头仍无法快速准确进针,加之小儿皮肤娇嫩,容易发生针头穿出血管造成局部肿胀或皮下淤血的情况。综上所述,对于血管较细的小儿患者或者成人病患,现有技术的输液针头无法有效进针,容易对病患造成不必要伤害的问题,尚缺乏有效的解决方案。
技术实现思路
为了克服上述现有技术的不足,本技术提供了一种螺旋卷曲式可调变径输液针,其可以实现输液针头的尺寸变化,在进针前通过调节针头的螺旋卷曲度,可使针头尺寸变小进而方便进针、减轻进针疼痛感,在进针后再次调节针头的螺旋卷曲度,可使针头尺寸变大进而实现正常输液;进一步的,本技术采用下述技术方案:一种螺旋卷曲式可调变径输液针,包括针座和一端固定于针座的针头,所述针头的横截面呈螺旋状,针头的纵截面呈层叠状,所述针座与针头最外层配合处设置限位部件,限位部件顶紧针头最 ...
【技术保护点】
1.一种螺旋卷曲式可调变径输液针,其特征是,包括针座和一端固定于针座的针头,所述针头的横截面呈螺旋状,针头的纵截面呈层叠状,所述针座与针头最外层配合处设置限位部件,限位部件顶紧针头最外层使针头相邻层叠紧进而处于小管径状态,限位部件带动针头最外层向外扩张使针头相邻层产生间隙进而处于大管径状态。
【技术特征摘要】
1.一种螺旋卷曲式可调变径输液针,其特征是,包括针座和一端固定于针座的针头,所述针头的横截面呈螺旋状,针头的纵截面呈层叠状,所述针座与针头最外层配合处设置限位部件,限位部件顶紧针头最外层使针头相邻层叠紧进而处于小管径状态,限位部件带动针头最外层向外扩张使针头相邻层产生间隙进而处于大管径状态。2.如权利要求1所述的输液针,其特征是,所述针座与针头最内层固定连接;所述针头另一端具有针尖;所述针座在靠近针头针尖的一端设置卡止部,卡止部套设于针头外部。3.如权利要求2所述的输液针,其特征是,所述卡止部包括套管,套管端部与针座可转动连接,套管与针头之间具有设定间隙。4.如权利要求3所述的输液针,其特征是,所述套管内径与针头扩张至最大的外径相同。5.如权利要求1所述的输液针,其特征是,所述限位部件包括穿过针座内壁与针头最外层固定连接的杆体,杆体外端延伸至针座外部与把手连接。6.一种螺旋卷曲式可调变径输液...
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。