Non-damaged needle group for venous infusion port and use method

Abstract

The invention discloses a non-damaged needle group for a venous infusion port and a use method. The non-damaged needle group for the venous infusion port comprises a base and a puncture needle assembly, wherein the base is connected with the puncture needle assembly in a matched mode. The base comprises a shell, a soft plug, and a sleeve, wherein the shell, the soft plug, and the sleeve are coaxially arranged. The shell is internally provided with an infusion channel, the infusion channel communicates with a hollow part of the sleeve, and the soft plug is used for blocking an upper opening ofthe shell. The puncture needle assembly comprises a needle seat and a puncture needle fixed below the needle seat. The end of the puncture needle punctures through the soft plug and extends out of thefar-end of the sleeve after passing through the hollow part of the sleeve. On the premise that the non-damaged needle can smoothly communicate with the infusion port, the non-damaged needle group forthe venous infusion port effectively prevents the non-damaged needle from cutting bacteria blocking soft glue of the infusion port during puncturing, the normal use of the instrument is ensured, andthe unnecessary medical accident is avoided.

Description

technical field [0001] The invention relates to the field of medical articles, in particular to a non-invasive needle set for puncturing an implantable venous infusion port and a method for using the same. Background technique [0002] Non-invasive needles for infusion ports are a type of infusion needles specially designed for infusion ports, which usually consist of a butterfly wing and a needle body perpendicular to the plane where the butterfly wing is located. When in use, the needle body is usually inserted vertically into the infusion port, and then the butterfly wing is attached to the patient's skin to fix the needle without damage. The internal structure of the infusion port can be referred to as shown in patent WO2014177298, which has at least one shell with a liquid medicine flow channel and the antibacterial soft glue fixed on the top of the shell and pierced by a non-invasive needle. [0003] In the actual use process, the infusion port is set to be fixed in t...

AI Technical Summary

Problems solved by technology

Although such a structure can prevent the formation of cutting edges, it can also treat the symptoms but not the root cause, because once the non-damaged needle is punctured into the infusion port in a non-perpendicular manner during the puncture process, it will also cause the problem of cutting the anti-bacterial soft rubber of the infusion port Second, due to the curved angle formed by the tip of the non-damaging needle, the reaction force of the anti-bacterial soft rubber on the surface of the non-damaging needle increases during the puncture process, resulting in the need to apply a larger thrust when puncturing

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