Micro liquid continuous infusion device

Abstract

The present invention relates to a trace liquid continuous infusion device, which comprises an output pump housing with a liquid storage chamber and an output port at the front, and is characterized in that: the inner peripheral wall at the rear of the output pump housing is provided with an internal thread and a screw rod The front end of the screw body is provided with a water-absorbing expansion body and a push block for compressing the space of the liquid storage chamber. There is a liquid guide to facilitate the delivery of liquid to the expansion body. The device can not only realize automatic and continuous micro-volume infusion of liquid, but also has the function of large-dose infusion. The utility model has the obvious advantages of simple structure, low cost, convenient regulation and good use effect. It is especially suitable for the infusion of medicinal solutions such as insulin or painkillers.

Description

Technical field [0001] The present invention relates to a device for continuous infusion of trace liquid. Background technique [0002] In the medical field, pressure infusion is often used in order to enable the infusion of medicinal liquids at a substantially constant flow rate. There is a pressure infusion pump driven by an electric machine controlled by a microprocessor in the existing such syringes. However, the pressure infusion pump is not only complicated in structure, expensive, and heavy in weight and volume, but also in use. It needs to be equipped with a power supply, so it is difficult to popularize it generally; there is also a patented product named "pressurized infusion box" such as the patent number 01252485.9. Although this product is low in cost and can achieve pressurized infusion, it is manual pressurization. , which makes it difficult to ensure a constant and continuous flow of micro-infusions when infusing drugs such as insulin or analgesics. SUMMAR...

AI Technical Summary

Problems solved by technology

There is a pressure infusion pump driven by an electric machine controlled by a microprocessor in existing syringes of this type. However, the pressure infusion pump is not only complicated in structure, expensive, heavy in weight and volume, but also in use. It needs to be equipped with a power supply, so it is difficult to popularize; there is also a patented product named "pressurized infusion box" such as the patent No. 01252485.9. , which makes it difficult to ensure a constant and continuous flow of micro-infusions when infusing drugs such as insulin or analgesics

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