Automatic-exhausting infusion needle seat

Abstract

The invention discloses an automatic-exhausting infusion needle seat which comprises an infusion outer tube. An infusion inner tube is mounted in a cavity of the upper section of the infusion outer tube in a sleeved manner, the upper end of the infusion inner tube extends out along the infusion outer tube while the extending-out end of the same is connected with a needle head, the lower end of theinfusion inner tube is fixedly connected on the infusion outer tube and connected with an automatic-exhausting component, the automatic-exhausting component is composed of a side wall and a bottom end and communicated with the infusion inner tube, through holes are formed in the lower section of the side wall of the automatic-exhausting component, and a gap is reserved between the side wall of the automatic-exhausting component and the inner wall of the infusion outer pipe. The automatic-exhausting component is fixedly mounted at the bottom end of the infusion inner tube, and the through holes are formed in the lower section of the side wall of the automatic-exhausting component, so that no matter the needle seat is in a vertical direction or a horizontal direction, air floats above due to the fact that density of the air is smaller than that of liquid, and the liquid enters the infusion inner tube from the through hole to achieve the objective of automatic exhausting. The automatic-exhausting infusion needle can realize automatic exhausting and is simple in structure, low in cost and suitable for clinical popularization and use.

Description

technical field [0001] The invention relates to a sterile medical device for clinical infusion, in particular to an automatic air-venting infusion needle holder. Background technique [0002] At the beginning of the infusion of ordinary infusion sets, the liquid medicine flows out from the dropper through the pipeline and enters the dropper. way into the needle seat. At present, clinical infusion needle hubs such as figure 1 As shown, the infusion outer tube 2 is covered with the infusion inner tube 3, the infusion outer tube 2 and the infusion inner tube 3 are directly connected, the air bubbles will directly enter the infusion inner tube 3 through the infusion outer tube 2, and thus enter the human body through the needle, which is easy to cause gas Hazards such as bolts. At the same time, due to the surface tension of the inner wall of the infusion pipeline, the inner wall of the infusion catheter is prone to absorb a small amount of air bubbles, and the process of rem...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems in the prior art that the air in the infusion tube is not easy to be discharged, and the existing exhaust device has a complex structure and high cost, the present invention provides an infusion needle holder with automatic exhaust

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