A portable infusion device

Abstract

The invention relates to a portable transfusion device, which belongs to the field of medical instruments. The base is provided with an inlet hole, at least two sink cavity groups composed of sink chambers, an outlet cavity and an air storage chamber, and the number of sink chambers contained in each sink cavity group decreases in turn from left to right; There are inlet and outlet holes on the sink cavity on the side, and inlet and outlet holes on the other sink cavity; the inlet and outlet cavity and the valve plates installed in it constitute the inlet and outlet valves respectively; the main body is installed on the base and the diaphragm is crimped on the base The guide hole of the main body and the sink cavity of the base are symmetrically arranged on both sides of the diaphragm, and the piezoelectric stack in the guide hole crimps the T-shaped piston on the diaphragm; the diaphragm crimps the sealing ring in the sink cavity to form a compression chamber; the same The compression chambers in the sink chamber group are connected in parallel to form a compression chamber group, and each compression chamber group is connected in series; the top of the main body is provided with a chamber with an air bag and a medicine bag, and a flow regulating valve and a needle are arranged on the liquid outlet pipe of the medicine bag, and the air bag inlet pipe It is connected with the air storage chamber, and an on-off valve and an air release valve are arranged on the intake pipe of the air bag.

Description

technical field [0001] The invention belongs to the field of medical equipment, and in particular relates to a portable transfusion device. Background technique [0002] Injection mainly includes intravenous injection, intramuscular injection and subcutaneous injection. Intravenous injection is also called infusion drug administration. Most of the existing infusion devices are composed of infusion bottles, infusion tubes and infusion stands. This infusion mode will bring many problems in actual use: the flow rate is adjusted manually, and the flow control accuracy is not enough; the infusion bottle needs to be held high by others when the patient walks or goes to the toilet, which is inconvenient to move and the height of the infusion bottle is not high enough. Make the blood flow back; the patient or the nursing staff need to watch for a long time, if the infusion is not found in time, it may cause an accident; the liquid medicine is in contact with the air, and there is a...

AI Technical Summary

Problems solved by technology

This infusion mode will bring many problems in actual use: the flow rate is adjusted manually, and the flow control accuracy is not enough; the infusion bottle needs to be held high by others when the patient walks or goes to the toilet, which is inconvenient to move and the height of the infusion bottle is not high enough. Make the blood flow back; patients or nurses need to be guarded for a long time, if the infusion is not found in time, it may cause accidents; the liquid medicine is in contact with the air, and the ambient air may be polluted when the air is unclean

In addition to the above direct problems, sometimes the infusion time is shortened by reducing the amount of solution, speeding up the infusion speed, etc., which not only increases the burden on the heart, but also affects the therapeutic effect: intramuscular injection and subcutaneous injection in a relatively short period of time. The biggest disadvantage of injecting into muscle or subcutaneous is that the blood drug concentration varies greatly within an injection cycle, which is not conducive to the effective absorption and utilization of drugs, because most drugs have a better concentration range in the human body, and when the drug concentration is too high Has toxic side effects, if it is too low, it will have no therapeutic effect

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