Regulating system for blood purification

Abstract

The invention discloses a regulating system for blood purification. The regulating system comprises a blood pump, a blood filter, an anticoagulant injector, an artery pot, a vein pot, a double-pipe pump, an electronic scale, a regulating valve and a control device. An inlet of the blood pump is communicated with the artery of the human body through a pipeline, the anticoagulant injector is communicated with an outlet of the blood pump, the outlet of the blood pump is communicated with an inlet of the blood filter through the artery pot, an outlet of the blood filter is communicated with the vein of the human body through the vein pot, and a blood purification circulation loop is formed. The electronic scale, the blood purification circulation loop and a displacement liquid circulation loop are organically combined, it is not needed to correct the electronic scale regularly, and the regulating system has the advantages of automatic regulation and high control precision; besides, the control device can perform alternate switching by controlling two sets of switching valves to guarantee continuous off-line displacement liquid supply, and thus the regulating system can operate continuously to generate displacement liquid for treatment in places without water sources and has the advantages of being wide in application range and convenient to use.

Description

technical field [0001] The invention relates to the technical field of blood purification, in particular to an adjustment system for blood purification. Background technique [0002] Blood purification equipment is to pass the blood through the central part of a hollow fiber semi-permeable membrane that allows medium and small molecular substances to pass through, so that the prepared isotonic liquid (such as dialysate, replacement fluid, peritoneal dialysis fluid, balance fluid, etc.), Through the outside of the hollow fiber membrane, under the action of osmotic pressure and transmembrane pressure, a large amount of water and medium and small molecule toxins in the patient's body can be removed through the principles of mass, convection and ultrafiltration, and the balance of water, electrolyte and alkali-acid in the body can be maintained to achieve A therapeutic device for blood purification. The current blood purification equipment is divided into hemodialysis equipment...

AI Technical Summary

Problems solved by technology

[0003] The preparation and supply of isotonic liquid in commonly used blood purification equipment have the following disadvantages: 1) Hemodialysis equipment and CRRT machine cannot be used as an integrated machine, especially CRRT machine is more expensive, and the utilization rate is not high in primary hospitals; 2) Hemodialysis The equipment can be used for hemodialysis, online hemofiltration and online hemodiafiltration, but it cannot be used for online hemodialysis and off-line hemofiltration, so it cannot be pushed to the bedside for use; 3) CRRT machine can only do off-line hemofiltration However, it can be pushed to the bedside to treat patients, but the consumables are very expensive

4) When the existing CRRT machine is used for continuous hemofiltration treatment, it is necessary to use an electronic balance scale and store all the displaced liquid on one side of the scale, and hang a clean replacement fluid bag on the other side of the scale to balance the amount of fluid in and out , the hemofiltration process must be stopped to replace the fluid bag, which affects the treatment time, and this process must be manually operated, which is cumbersome and prone to operational errors; 5) The existing CRRT machine must use two electronic scales, one for the weight of the replacement fluid , the other weighs the weight of the waste liquid, and the computer balances the electronic scale through the gravity and pressure sensors, so the two electronic scales must be corrected regularly, otherwise the treatment effect will be affected; 6) Online liquid preparation cannot be performed for off-line CRRT

7) The ultrafiltration must be realized by the ultrafiltration pump installed inside the hemodialysis machine; 8) The water pressure at the inlet of the reverse osmosis water of the existing hemodialysis equipment requires -4~-1bar, and the external water supply pressure must be 1.0~3.5bar, so that the equipment can Therefore, the hemodialysis equipment cannot be moved to the bedside to treat patients, thus limiting the clinical application of CRRT

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