IV self-administration cannula

Abstract

The invention provides a vein self-administration intubation tube. The tube comprises a spacer, a hard catheter, a connector, a bonding block and a hose. The hard catheter is bent into an L shape and comprises an upright part and a horizontal part; the connector is arranged in the middle of the upright part; the connector and the hard catheter are bonded on the end face of the spacer through the bonding block, and the upright part is vertically arranged on the spacer; one end of the hose is connected with the horizontal part in a sealed mode, and the other end, with a flush end opening in the end portion, of the hose is an insertion end. The vein self-administration intubation tube is characterized in that a lateral opening is formed in the position, behind the flush end opening, of the insertion end of the hose, and the lateral opening is obliquely arranged from backward to forward. Compared with the prior art, the vein self-administration intubation tube has the advantages of being not prone to incrustation, blocking and liquid leakage, and meanwhile greatly prolonging the service life.

Description

technical field [0001] The invention relates to an intravenous drug delivery device, in particular to a drug delivery cannula, which belongs to the technical field of medical devices. Background technique [0002] Intravenous self-administration is one of the most widely used animal models in the study of drug addiction. In this model, the animal obtains the drug from the jugular vein by actively pressing the plate or touching the nose, and completes the effective intravenous self-administration behavior. Meanwhile, intravenous self-administration experiments generally last for several weeks or even months. Therefore, the success rate, stability and availability of venous catheterization are more important in whether animals can maintain effective self-administration behavior for a long time. Venous catheterization is the experimental basis to ensure the completion of intravenous self-administration, and good and durable venous access is an important condition to ensure lo...

AI Technical Summary

Problems solved by technology

[0006] First, there is only an opening at the front end. After giving the medicine or passing through the tube, after the drug tube is pulled out, due to the effect of suction, a small section of blood will be sucked out from the other opening end. narrower and narrower, eventually leading to clogging and leakage;

[0007] Second, since the silicone tube is a foreign body, it will cause a scab to gradually form in front of the opening of the flat end, which will cause the given drug or heparin to flow out, which will lead to leakage;

[0008] The third is that after the surgical ligation, it will gradually loosen. In this way, due to the directional force, the silicone tube will gradually retreat when the drug is administered, and finally the socket will pop out, affecting the drug delivery process;

[0009] Fourth, the effective period of use is relatively short, and the intubation generally lasts for 4-6 days before there will be blockage and leakage, while the maintenance period of self-administration is 14 days, so the intubation on one side must be maintained for at least 7-10 days

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