A portable infusion set

Abstract

The invention relates to a portable transfusion device and belongs to the field of medical instruments. A main body is arranged on a base, a left boss with an inlet hole, a right boss with an outlet cavity and an upper outlet hole and at least two body tables which are sequentially reduced in diameters from left to right are arranged on the main body, an upper inlet cavity and the upper outlet hole are arranged on the body tables, an air bag and a medicine bag are arranged in a bag cavity of the main body, a flow valve and a needle are arranged on a medicine bag transfusion tube, the air bag is communicated with the upper outlet hole through an air conveying pipe, a deflation valve is arranged on the air conveying pipe; a left cavity with a lower inlet hole, a right cavity with a lower outlet hole and a body cavity are arranged on the base, the body cavity is provided a lower inlet cavity and a lower air outlet hole; the upper and lower inlet and outlet cavities and valve sheet thereinform upper and lower inlet and outlet valves; the left boss is arranged in the left cavity, the right boss is arranged in the right cavity, the body tables press a driver in the body cavity, the driver consists of two piezoelectric vibrators and a washer arranged between the vibrators; the driver, a seal ring, the main body and the base respectively constitute upper and lower compression cavitieswhich are connected in parallel after being connected in series.

Description

technical field [0001] The invention belongs to the field of medical instruments, in particular to a portable infusion set. 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 possibility of ...

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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