Closed pressure-regulating type automatic fluid infusion system applied to simulation of human cerebrospinal fluid circulation

Abstract

The invention discloses a closed pressure regulating type automatic liquid supplementing system applied to simulation of human cerebrospinal fluid circulation, which is characterized by comprising a liquid inlet, a model capsule cavity, an adjustable water pump, a liquid storage tank and a liquid supplementing tank, simulation liquid is injected through a pressure injection type one-way valve of the liquid inlet, and the model capsule cavity, the liquid storage tank and the liquid supplementing tank are sequentially filled with the simulation liquid through a conveying pipe. Or after the simulation liquid enters the liquid supplementing tank, the simulation liquid is added through a liquid adding opening of the liquid supplementing tank, the circulation speed of the simulation liquid between the model capsule cavity and the liquid storage tank is adjusted through pressurization of the adjustable water pump, cerebrospinal fluid circulation is simulated, puncture practice is conducted, the simulation liquid is sprayed out of the model capsule cavity along with the puncture needle due to the existence of pressure, negative pressure is formed in the capsule cavity, and the simulation liquid is injected into the model capsule cavity. Liquid flows to the liquid storage tank from the liquid supplementing tank through the one-way valve and then flows to the model capsule cavity, so that automatic liquid supplementing is formed; the automatic liquid supplementing device is simple and practical in structure and capable of achieving continuous and automatic liquid supplementing.

Description

technical field [0001] The invention belongs to a liquid adding system, and relates to a closed pressure regulating type automatic liquid replenishing system, in particular to a closed pressure regulating type automatic liquid replenishing system applied to simulate the circulation of human cerebrospinal fluid. [0002] technical background [0003] Cerebrospinal fluid circulates in the human body with a certain direction and flow speed. Cerebrospinal fluid flows out from the choroids in the ventricle, flows through the ventricle to the surface of the brain, wraps down the spinal cord, returns to the cranial cavity, and finally enters through the sagittal sinus. The veins drain out of the cranial cavity, circulate and flow, and in the process of circulation, a part of the useless things produced by metabolism are brought out of the cranial cavity, and it is in a state of constant production, circulation and return. [0004] The purpose of spinal puncture is to check the disea...

AI Technical Summary

Problems solved by technology

However, there is a risk factor in practicing on patients, and mistakes can easily lead to serious consequences. Therefore, a series of puncturing practice models have been produced. At present, most of the common models are mechanical models, which are far from the actual operation, and most of them use replacement storage. Liquid device or multiple additions are used to supplement the simulated fluid. This method is not only troublesome to use, but also has a large difference from the cerebrospinal fluid circulation, and it is not suitable for rapid continuous training when many people to be trained operate. The waiting time is long, and multiple rehydration is required, which cannot provide continuous practice for students. Therefore, the present invention provides a closed and pressure-regulating circulation automatic rehydration system, which can not only automatically replenish fluid, but also simulate the circulation of human cerebrospinal fluid. Restore the human body puncture model to a certain extent

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