Medical hemodialysis assembly

Abstract

The invention relates to the field of medical treatment, and discloses a medical hemodialysis assembly which comprises an arterial catheter, a venous catheter, a dialyzer and a blood pump. The blood pump comprises a pump body, a first bolt, a bearing, a speed reducer support, a motor support and a second bolt. A dismounting side plate is fixedly mounted on the right side of the pump body through a first bolt, an upper right connecting shaft and a lower right connecting shaft are rotationally connected to the upper portion and the lower portion of the left end of the dismounting side plate correspondingly, and a driving roller and a driven roller are fixedly connected to the left ends of the upper right connecting shaft and the lower right connecting shaft correspondingly. The left side and the right side of the outer wall of the driving roller and the left side and the right side of the outer wall of the driven roller are symmetrically provided with two sets of oppositely-arranged driving spiral blades and driven spiral blades correspondingly, and the driving spiral blades and the driven spiral blades on the same side are matched with each other. The safety of hemodialysis can be improved, blood can be continuously and stably output, and the blood transfusion speed can be adjusted according to actual conditions.

Description

technical field [0001] The invention relates to the medical field, in particular to a medical hemodialysis component. Background technique [0002] Hemodialysis is one of the most effective measures to treat acute and chronic renal failure and drug and food poisoning, and it is also the most commonly used method in clinical renal replacement therapy. The principle of hemodialysis is: the arterial extracorporeal circulation circuit draws the patient's blood out of the body, the dialyzer purifies the blood, and the venous extracorporeal circulation circuit returns the treated blood to the patient's body. [0003] In the prior art, as shown in CN 211434410 U, the hemodialysis component generally includes an arterial tube, a venous tube and a dialyzer. One end of the arterial tube is an arterial connection end, and the other end is a dialyzer connection end A, and the arterial connection end is connected to a human artery. The connection end A of the dialyzer is connected to th...

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Problems solved by technology

[0004] In the prior art, the blood pump usually includes a rubber tube and a cam driven by a motor, and one end of the rubber tube is connected to the patient's artery; during application, as the cam rotates, the protruding part of the cam itself squeezes the rubber tube at intervals, pushing the rubber tube blood flow to complete the blood delivery; due to the above-mentioned structural characteristics, the output of the conventional blood pump is not continuous, stable and continuous, but discontinuously ejected in the form of one pulse after another; this output form is easy for the dialyzer Hollow fiber tubes cause impact and cause corrosion, which is not conducive to the maintenance of the dialyzer. It has a medical hidden danger of direct communication between the blood and the electrolyte in the dialyzer. The safety is insufficient, and the blood pump in the prior art cannot be well adapted to the actual situation control blood transfusion rate

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