Blood plasma bag air-cleaning device

Abstract

A plasma bag air removal device pertains to screw rod transmission extrusion devices; the invention overcomes the shortcomings caused by adopting the existing manual control to remove the air, thereby rapidly and efficiently removing the air mixed in the plasma bag. A machine base which is arranged at one end of a supporting framework of the invention is fixedly provided with a silicone pad, a guide rod penetrates the supporting framework, the guide rod is fixedly connected with an extrusion board and a moving board, the moving board is connected with a trapezoidal screw rod by a screw nut of the screw rod, the trapezoidal screw rod is connected with a stepping motor by an elastic coupling and a reducer sequentially, the interior of the silicon pad is sealed with an elastic steel plate, the elastic steel plate is fixed on the machine base and shows a simple supported beam structure; the central position of the elastic steel plate is fixedly provided with a luminous diode, a photosensitive resistance is arranged on the machine base which is corresponding to the position of the luminous diode; the resistance change signal of the photosensitive resistance is converted to the voltage analog signal to be sent to a single chip microcomputer by an amplification circuit and an A / D conversion circuit. The invention can simplify the realization mode of the control, improve working efficiency, save labor costs and allow the whole air extrusion process to be more reliable.

Description

technical field [0001] The invention belongs to an extruding device driven by a screw rod, in particular to a device for automatically removing air in a blood plasma bag during the process of separating blood components. Background technique [0002] Medical blood transfusion has gradually moved from whole blood transfusion to component blood transfusion. The blood components include plasma, red blood cells, platelets, etc. The blood separator separates the blood components, transfers the blood components to different blood bags, and stores them in different environments. When a patient needs a certain blood component, it can be conveniently access. [0003] Plasma is separated from whole blood and transferred to a plasma bag. During the blood separation and transfer process, there will inevitably be air doping. After the plasma separation is completed, remove the air in the plasma bag, and then put the plasma bag at a temperature of -40°C Perform quick freezing treatment,...

AI Technical Summary

Problems solved by technology

Moreover, due to the doping of air, the plasma is easily deteriorated and the shelf life is reduced.

[0004] At present, the manual control method is mainly used to clear the air in the plasma bag, which makes the operation cumbersome, the labor intensity of the workers is very high, and there will be relatively large human errors.

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