Infusion system of a portable drug infusion device

Abstract

The invention provides an infusion system of a portable drug infusion device, which uses a three-way cavity structure designed on the upper shell and an elastic material element used in conjunction with it as a drug fluid from an external syringe to a drug storage cylinder in the shell, from The flow path from the drug storage cylinder to the infusion needle provides a transition channel, which can be injected into the drug storage cylinder with an ordinary injection needle, and can be injected repeatedly after the drug fluid in the drug storage cylinder is used up; up and down The shell structure is ingeniously matched with the structure of the needle seat where the infusion needle is located, which not only ensures the compactness of the infusion equipment, but also allows the patient to safely and conveniently control the position of the infusion needle; in addition, the protective cover installed on the needle seat further increases Safety when using infusion needles. The infusion system of the portable infusion device of the present invention has the advantages of small volume, exquisite structure, simple operation and safety guarantee.

Description

technical field [0001] The invention relates to a medical device, in particular to an infusion system of a portable medicine infusion device. Background technique [0002] A medical fluid infusion device is a medical device that continuously injects drugs into the patient's body to achieve the treatment of the patient's disease. Drug fluid infusion devices are widely used in the treatment of diabetes. Insulin is continuously infused into the patient's subcutaneous area according to the dose required by the human body, so as to simulate the secretory function of the pancreas and maintain the stability of the patient's blood sugar. The drug fluid is usually stored in a drug storage cartridge. The existing drug fluid infusion device usually infuses the drug fluid into the patient's body through a catheter connected to the pump body. In actual use, wearing the catheter usually not only Cause certain hindrance to patient's activity etc., and also not attractive in appearance. ...

AI Technical Summary

Problems solved by technology

After the drug fluid in the drug storage part is infused, it must be replaced with a new drug storage part, or the entire infusion device must be replaced directly, resulting in the waste of some sustainable parts, and the whole piece is only suitable for non-precision and expensive electronics. Components of Mechanical Pumps

There is another device that directly injects the drug fluid into the drug storage part and then infuses it through the infusion needle connected to the drug storage part. However, it requires the use of special supporting drug injection parts and cannot use commercially available general-purpose syringes, so there are many consumables. The cost is high, and it is not conducive to the wide application of syringe pumps

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