Non-destructive needle assembly for infusion port and maintenance method for infusion port injection

Abstract

The invention relates to the technical field of central venous catheterization and nursing, in particular to a non-destructive needle assembly for an infusion port and a maintenance method for infusion port injection. The non-destructive needle assembly comprises a base and a hollow needle, where the base comprises a flexible rear cover, a base and a soft rubber pad and is provided with a first hole, a second hole, a third hole and a medicine storage cavity; the hollow needle is arranged in the medicine storage cavity; the tail portion of the hollow needle is connected with the flexible rear cover; and the head portion of the hollow needle is inserted into a soft rubber mat but does not penetrate through the soft rubber mat. The invention has the beneficial effects that no incision is formed, and damage to bacteria-blocking flexible rubber of the infusion port is small when the infusion port is pierced; the piercing depth of the hollow needle can be adjusted along with the pushing depth of the flexible rear cover, and can adapt to patients with different burial depths; the flexible rear cover is arranged, so a movable part is completely isolated from the outside, and secondary pollution is avoided; and a limiting piece is arranged, so the hollow needle can be prevented from being excessively pushed and being separated; and operation is simple.

Description

technical field [0001] The invention relates to the technical field of central venous catheterization and nursing, in particular to a non-destructive needle assembly for an infusion port and an injection maintenance method for an infusion port. 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, th...

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

[0004] The Chinese invention patent titled "Non-injury needle set for intravenous infusion port and its maintenance method for infusion port injection" (application number 201810323891.2) discloses a cannulated non-destructive needle. Although this non-destructive needle has no edge, However, it is necessary to insert the puncture needle in the cannula into the infusion port and then pull it out to form a fluid passage. The operation is relatively complicated, and the process of pulling out the puncture needle is easy to cause secondary pollution

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