Blood sampling device for children patients with leukemia and application method thereof

Abstract

The invention relates to a blood sampling device for children patients with leukemia and an application method thereof. A disposable consumable part of the blood sampling device comprises a barrel body, wherein one end of the barrel body communicates with a needle inserting connector; a piston block is movably arranged in the barrel body; the outer side of the piston block is fixedly connected with the inner end of a central tube sleeved into the barrel body; a bolt placement hole is formed in the end part position of the outer side of the central tube; a limiting and fixing plate is fixedly arranged at the outer side of the end part of the other end of the barrel body; rotary fastening holes are formed in the limiting and fixing plate; one end, extending out of the barrel body, of the central tube is fixedly connected with limiting and inserting plates; and the rotary fastening holes, the bolt placement hole and the limiting and inserting plates are matched with an automatic control device. The danger caused by repeatedly pulling a piston rod for multiple times is avoided, the danger coefficient is reduced, start-stop operation of a rotary motor is achieved by adopting the controldevice, accurate control is achieved, stable pulling force is provided, the pulling force is implemented in a thread manner, the accuracy is greatly improved, and reasonable controlled extraction ofblood volume is achieved, so that the blood sampling device has good social and economic benefits.

Description

technical field [0001] The invention relates to the medical field, in particular to a blood sampling device for children with leukemia and a method for using the same. Background technique [0002] Leukemia is a malignant clonal disease of hematopoietic stem cells. Clonal leukemia cells proliferate and accumulate in bone marrow and other hematopoietic tissues due to mechanisms such as uncontrolled proliferation, differentiation disorder, and apoptosis inhibition, and infiltrate other non-hematopoietic tissues and organs, while inhibiting normal hematopoietic function. Clinically, different degrees of anemia, hemorrhage, infection, fever, enlargement of liver, spleen, lymph nodes and bone pain can be seen. [0003] During the treatment of leukemia patients, blood sampling is often taken. No matter in the process of initial inspection, mid-term treatment and later re-examination, blood sampling inspection will be carried out. At present, the prevalence of childhood leukemia ...

AI Technical Summary

Problems solved by technology

When sampling blood for children with leukemia, a wide variety of blood needs to be sampled, including whole blood, blood components, and other blood products. Due to the thinner blood vessels in children, the overall wall is thinner, and the internal pressure of the blood vessels is limited. Among them, when the syringe is directly used to draw blood from the vein, the piston rod often cannot be pulled up. Even if the piston rod is pulled up with great effort, the blood cannot be drawn when the piston is pulled up. The reason is that the pressure difference between the inside and outside of the syringe is large. Let go of your hand to let the piston slide down and then pull it up again to draw blood, but there is a certain danger in this repeated operation. Pulling the piston rod twice can easily cause the needle to run or puncture through the blood vessel, especially the small wall of the blood vessel in children. Thin, once the phenomenon of puncture and penetration occurs, the consequences will be more serious

In addition, in the traditional syringe blood drawing process, it is difficult to achieve precise control of the blood volume, resulting in a lot of blood collection, which brings losses to patients

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