Centrifugal blood component separation cup and method

Abstract

The invention provides a centrifugal blood component separation cup and method. The separation cup comprises a cup body, a stator and a separation core and is characterized in that the interior of thecup body is of a hollow structure, the stator of a hollow structure is arranged above the cup body, the stator is provided with a red-blood-cell outlet, a plasma outlet and a blood inlet, a blood drainage catheter is mounted inside the stator, a red-blood-cell drainage catheter and a plasma drainage catheter are arranged outside the blood drainage catheter, the separation core of a T-shaped structure is arranged on the upper portion of the interior of the cup body, a cavity is formed between the separation core and the cup body, the upper portion of the separation core is provided with two cavities, the outer cavity is a red-blood-cell buffer cavity, and the inner cavity is a plasma buffer cavity. The centrifugal blood component separation cup has the advantages that red blood cells are transferred out of the cup body through the red-blood-cell drainage catheter to allow more blood to enter the cup body and be separated so as to fast reach the target value of to-be-collected plasma, and the plasma donating time of a blood donor can be shortened while blood component separation quality is improved.

Description

technical field [0001] The invention relates to a medical device, in particular to a centrifugal blood component separation cup and a separation method. Background technique [0002] In medical applications, the treatment technology of plasma exchange and blood products or medicines based on plasma are commonly used. Plasma is an important component of human blood. Plasma collection technologies include membrane filtration technology and centrifugal separation technology. In order to obtain plasma components, centrifugal separation technology needs to use plasma collection equipment, and then use disposable blood collection tubes, collection bags and separation cups to extract human blood and inject it into the separation cup. Based on the principle of different centrifugal forces, each component in the blood forms different layers in the separation cup, the innermost layer is the plasma layer, and the outermost layer is the red blood cell layer. The current method of colle...

AI Technical Summary

Problems solved by technology

[0005] 1. For those with low plasma content in blood donors, due to the limited capacity of the separation cup, the amount of plasma collected in a single time is often less than 300g, and multiple cycles are required to collect the target collection amount. The time required for blood transfusion will increase;

[0006] 2. For those with high plasma content in the blood of blood donors, due to the large capacity of the separation cup, the centrifuge cup needs to be filled to start collecting plasma, resulting in a waste of time;

[0007] 3. At the end of plasma collection, the blood entering the centrifuge cup is not completely separated, and the separation effect of plasma and red blood cells is poor, resulting in low separation quality;

[0008] 4. For those with low plasma content in blood donors, when the amount of plasma collected in a single time reaches the limit, red blood cells are easily mixed into the plasma collection bag, causing contamination of plasma components

[0009] The above deficiencies lead to too long time for blood donors to donate plasma, which will easily cause discomfort and take up blood donors' time, which will adversely affect the enthusiasm of blood donors to donate plasma, thus affecting the overall plasma collection volume

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