The invention discloses a bubble free indwelling needle comprises a needle tube, needle seat, rubber plug, three seat and catheter indwelling catheter, the catheter three seat comprises a first interface and the second interface and the interface of the infusion, indwelling catheter is fixedly connected with the second interface front end seal, wherein the first interface, second the interface and the axial through indwelling catheter puncture needle needle channel activities constitute, the infusion interface is arranged on the first inclined interface and the second interface between the rubber plug is fixedly arranged in the first interface, the bottom surface of the rubber plug is arranged obliquely, and the three seat interface infusion catheter relative oblique to extend the channel along with the rubber plug and the bottom end of the parallel border set. The invention has the advantages of no bubbles and high safety in infusion.
【技术实现步骤摘要】
【技术保护点】
一种无气泡留置针，包括有针管座、穿刺针头、胶塞、三通导管座以及留置导管，其中，三通导管座包括有第一接口、第二接口和输液接口，所述留置导管密封固接在第二接口前端，其中第一接口、第二接口和留置导管轴向贯通构成穿刺针头活动的的针头通道，所述的输液接口斜向设置于第一接口和第二接口之间，所述的胶塞固定设置在第一接口内，其特征在于：该胶塞的底面的呈斜向设置，且三通导管座内相对输液接口的斜向延伸通道的上沿与胶塞的底端与相平行接壤设置。
【技术特征摘要】
【专利技术属性】
技术研发人员：张谦，陈洪，
申请(专利权)人：浙江康德莱医疗器械股份有限公司，
类型：发明
国别省市：33
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