Arteriovenous blood exchange pipeline system and blood volume calculation method thereof

Abstract

The invention provides an arteriovenous blood exchange pipeline system. The system comprises a blood transfusion assembly and a blood drawing assembly, wherein the blood transfusion assembly comprisesa three-way pipe joint, two connectors of the three-way pipe joint communicate with a plasma bag and an erythrocyte liquid bag through pipelines respectively, the other connector communicates with the vein of a patient through a blood transfusion pump, flow sensors are arranged on pipelines for conveying plasma and erythrocyte liquid, and a flow switch is arranged on the pipeline between the blood transfusion pump and the three-way pipe joint. The blood drawing assembly further comprises a three-way pipe joint, wherein two connectors of the three-way pipe joint communicate with a heparin liquid supply system and a collecting cylinder through pipelines respectively, the other connector of the three-way pipe joint communicates with the artery of the patient through a negative pressure blooddrawing pump, flow sensors are arranged on the pipelines used for conveying heparin liquid and communicating with the collecting cylinder, and a liquid level sensor is arranged in the collecting cylinder. By means of the system, the problem that in the prior art, a blood exchange pipeline system calculates the volume of waste blood by means of weighing and conversion, and as a result, the volumeof blood output cannot be accurately calculated is solved.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an arteriovenous blood vessel exchange system and a blood volume calculation method thereof. Background technique [0002] In the process of rescuing severe hemolytic disease of newborns in the neonatal intensive care unit (NICU), neonatal exchange transfusion therapy is often used to achieve the purpose of treatment. The purpose of exchange transfusion is: 1. Exchange bilirubin, antibodies and sensitized red blood cells in the blood ; 2. Correct anemia; 3. For hyperbilirubinemia with severe infection, it can replace pathogenic bacteria and their toxins. This is a first-aid method to prevent bilirubin encephalopathy, and it is the only effective rescue method at present. An exchange transfusion involves transfusion of a large amount of blood from the donor while also exchanging some or most of the blood in the child's body. At present, peripheral synchronous arteriovenous transfu...

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Problems solved by technology

[0004] Aiming at the above-mentioned problems in the prior art, the present invention provides an arteriovenous blood vessel exchange system and its blood volume calculation method, which solves the problem of poor sealing between the pipes of the arteriovenous blood vessel system in the prior art, which often occurs bleeding problem

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