Anti-spill plug for indwelling needle and indwelling needle using anti-spill plug

Abstract

The invention provides an anti-spill plug for an indwelling needle, comprising a soft rubber plug and a fixing seat, wherein the upper part of the soft rubber plug and the lower part of the soft rubber plug are both cylinders, and the diameter of the upper part of the soft rubber plug is larger than the diameter of the lower part of the soft rubber plug; the lower part of the soft rubber is provided with a pinhole corresponding to a puncture needle of an indwelling needle, the fixing seat is provided with a mounting hole, and the lower part of the soft rubber plug is mounted in the mounting hole of the fixing seat; the invention also discloses an indwelling needle using the anti-spill plug, comprising a hose seat, wherein the anti-spill plug is mounted in the hose seat, the upper part of the soft rubber plug is in interference fit with the hose seat, and the fixing seat is in gap fit with the hose seat; the outer wall of the fixing seat is provided with an annular boss, a first annularprotrusion for shielding the annular boss is arranged in the hose seat, and the first annular protrusion is in jacking fit with the end surface of the annular boss. The anti-spill plug and the indwelling needle of the invention ensure that when the needle tip of the puncture needle is retracted into the anti-spill plug, and the side opening on the puncture needle is still in the anti-spill condition, the wrapping force of the anti-spill plug to the puncture needle is reduced, thus facilitating the operation of the medical personnel.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an anti-overflow plug for indwelling needles and an indwelling needle using the anti-overflow plug. Background technique [0002] In recent years, the scope of application of intravenous indwelling needles has been continuously expanded, and it has been widely used in clinical departments. There are some problems in the clinical use of intravenous indwelling needles. The resistance of the medical staff to withdraw the needle after operating the indwelling needle is relatively large. The main reason is the structure of the anti-overflow plug assembled in the catheter adapter. Blood and medicine flow out of the catheter base, and there is a side opening at the front of the puncture needle for blood to flow into the catheter base when the needle tip punctures a blood vessel, which is convenient for medical staff to observe the return of blood. When the puncture is successful...

AI Technical Summary

Problems solved by technology

There are some problems in the clinical use of intravenous indwelling needles. The resistance of the medical staff to withdraw the needle after operating the indwelling needle is relatively large. The main reason is the structure of the anti-overflow plug assembled in the catheter adapter. Blood and medicine flow out of the catheter base, and there is a side opening at the front of the puncture needle for blood to flow into the catheter base when the needle tip punctures a blood vessel, which is convenient for medical staff to observe the return of blood. When the puncture is successfully withdrawn, the needle tip must be prevented When the side opening is not retracted into the anti-overflow plug, blood cannot flow out from this side opening, otherwise it will easily increase the risk of blood-borne diseases and increase the difficulty of nursing. For this reason, the length of the anti-overflow plug inside the catheter holder of the indwelling needle commonly used in the market It is relatively long to ensure that when the needle tip of the puncture needle is retracted into the anti-spill plug, the side opening on the puncture needle is still in the anti-spill plug, so as to prevent the problem of bleeding from the side opening

However, the excessively long size of the anti-overflow plug is too large for the wrapping force of the puncture needle, especially for the larger type of indwelling needle puncture needle, which leads to poor operating experience of the indwelling needle for medical staff

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