Plasma exchange device for treating microvascular disease

Abstract

The invention discloses a plasma exchange device for treating microvascular diseases, and relates to the technical field of hematology department treatment, the plasma exchange device comprises a base, the base is provided with a tube groove for accommodating an extraction tube and an input tube, the base is provided with two groups of sliding grooves communicated with the tube groove, a pressing rod is accommodated in the sliding grooves and can extend into the tube groove, and the center of the pressing rod is provided with a rotatable disc driving block; the disc driving block is provided with two special-shaped combined grooves, the two special-shaped combined grooves are in central symmetry about the circle center of the disc driving block, the two special-shaped combined grooves are formed by combining straight kidney-shaped holes and arc-shaped kidney-shaped holes, the pressing rod is provided with a first cylinder stored in the special-shaped combined grooves, and a second spring is arranged on one side of the pressing rod. The driving assembly is arranged on the base and used for alternately driving the two sets of pressing rods to move in the axial direction, the special-shaped combined grooves are formed in the disc driving block to limit the pressing rods, when the pressing rods are driven to move in the axial direction at the same time, the relative axis freedom degree of the pressing rods is reserved, various combined clamping control can be achieved, and the control precision is high.

Description

technical field [0001] The invention belongs to the technical field of hematology medical treatment, and in particular relates to a plasma exchange device for treating patients with microvascular diseases. Background technique [0002] Thrombotic thrombocytopenic purpura (TTP) is a severe disseminated thrombotic microangiopathy characterized by microangiopathic hemolytic anemia, decreased platelet aggregation consumption, and microthrombosis resulting in organ damage (such as kidney, central nervous system, etc.). Previously, TTP had a poor prognosis, a short course of disease, and a mortality rate of 80-90% without timely treatment. With the clinical application of plasma exchange, the prognosis has been greatly improved, and the mortality rate has dropped to 10-20%. [0003] In the prior art, plasmapheresis is to extract whole blood from the body and separate it into plasma and cell components, discard the patient's plasma, and then replace the separated plasma with plasm...

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Problems solved by technology

[0003] In the prior art, plasma exchange is to extract whole blood out of the body and separate it into plasma and cell components, discard the patient's plasma, and then replace the separated plasma with fresh plasma, albumin solution, balance solution and other plasma substitutes at the same speed. The process of infusion into the body achieves the purpose of reducing pathological damage and removing pathogenic substances. At present, plasma exchange devices used in hematology are relatively simple and have a single function, especially for the control of pipeline clamping. , can not accurately realize the simultaneous closure between the input and output channels, therefore, we propose a plasma exchange device for the treatment of microvascular diseases

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