Full-automatic local citric acid anti-freezing device

Abstract

The invention discloses a full-automatic local citric acid anti-freezing device. A controller is connected with a first peristaltic pump, a second peristaltic pump and an I / O control module. The I / O control module is connected with a bubble detection module and a warning module. The controller transmits control signals used for controlling the liquid inlet speed of the first peristaltic pump and the liquid inlet speed of the second peristaltic pump. The I / O control module transmits detection signals of the bubble detection module to the controller. The I / O control module controls on-off of the control module. To a certain degree, the labor loads of medical workers are relieved, and safety is improved. According to the full-automatic local citric acid anti-freezing device, local citric acid anti-freezing becomes a simple and convenient anti-freezing technology, and clinical application and popularization of the full-automatic local citric acid anti-freezing device are promoted.

Description

technical field [0001] The invention relates to an automatic control device, in particular to a fully automatic local citric acid anticoagulant device. Background technique [0002] Anticoagulation in vitro is the key to the smooth progress of blood purification. Regional citrate anticoagulation (RCA) has the advantages of definite anticoagulation effect, less bleeding complications, and prolonged service life of dialyzer, so it has become an ideal choice for anticoagulation in extracorporeal circulation for patients with high-risk bleeding tendency. However, due to potential metabolic complications, the operation is more complicated, and frequent monitoring is required during the period, which limits its clinical application. [0003] Such as figure 1 As shown, the traditional partial citrate anticoagulant technique is to infuse sodium citrate solution at a certain ratio according to the blood flow velocity at the arterial end of extracorporeal circulation, and at the sam...

AI Technical Summary

Problems solved by technology

[0006] (1) On the basis of the original blood purification device, two additional precision infusion pumps need to be added for the infusion of citrate solution and calcium solution, which is cumbersome to operate;

[0007] (2) The citrate infusion pump and the calcium supplement infusion pump are two independent pumps. When the treatment parameters change or the arterial pump of the dialysis machine stops due to alarms, replacement of replacement fluid / dialysis fluid, etc., the dialysis nurse needs to manually stop the pump. / Start these two pumps, if the operation is not standardized, it may cause excessive iatrogenic citrate infusion or hypercalcemia, resulting in failure of extracorporeal circulation anticoagulation;

Our dialysis center also adopted this empirical "trial and error" scheme at the beginning of the application of RCA, and found that the level of ionized calcium in the body fluctuated greatly, and because the change of calcium lagged behind the adjustment of calcium, it was difficult to accurately grasp the amount of calcium supplementation;

[0009] (4) The manpower invested in RCA (at least one hemodialysis nurse who has received strict training and a doctor familiar with citrate anticoagulant technology should be present), material resources (ionized calcium needs to be monitored every 2-4 hours, and the cost of each measurement 150 yuan) The cost investment is huge

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