Automatic peritoneal dialysis system and control method thereof

Abstract

The invention provides an automatic peritoneal dialysis system and a control method thereof. The automatic peritoneal dialysis system is characterized in that a main machine comprises a liquid exchange box, an injection peristaltic pump, a drainage peristaltic pump and a pressure sensor. The injection peristaltic pump is controlled by a control system. The liquid exchange box is divided into a liquid cavity and a gas cavity by an elastic diaphragm in the middle. The gas cavity is connected with the pressure sensor. The pressure sensor controls injection or drainage speed through the control system. The liquid cavity is connected with a supplement bag, a final bag, a heating bag, a waste liquid barrel and a patient side sequentially through pipelines. Each of the supplement bag, the final bag and the heating bag is provided with a liquid valve. The injection peristaltic pump is mounted between the heating bag and the heating bag liquid valve. The drainage peristaltic pump and a drainage valve are mounted on a drainage pipe. An injection valve is arranged on an injection pipe. Each valve is connected with the control system. The automatic peritoneal dialysis system and the control method thereof have the advantages that the sense of discomfort caused by injection and drainage pressure to patients is relieved, and the defect that liquid leakage is easily caused by pressure detection equipment is avoided; liquid injection and drainage quantities are controlled accurately, and accordingly, risk of liquid entering human bodies due to low injection quantity and pollution caused by adoption of same pipelines are avoided.

Description

technical field [0001] This product belongs to the field of medical equipment, specifically relates to clinical peritoneal dialysis equipment, and is an automatic peritoneal dialysis system and a control method thereof. Background technique [0002] Peritoneal dialysis and hemodialysis are commonly used treatments for uremia. Peritoneal dialysis uses the patient's own natural filter membrane, the peritoneum, to clean the blood and remove toxins and excess fluid. The peritoneum is the membrane surrounding the wall of the abdominal cavity that covers the stomach, spleen, liver, and intestines. Peritoneal fluid is placed in the peritoneal cavity, and waste and fluids from the patient's blood are filtered through the peritoneum into the peritoneal fluid. The peritoneal dialysis fluid containing waste is drained out of the peritoneal cavity after a few hours, and new peritoneal dialysis fluid is then infused. This is the simple process of peritoneal dialysis. [0003] One of th...

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Problems solved by technology

[0007] In order to solve the above problems in the prior art, the present invention provides an automatic peritoneal dialysis system and its control method, which mainly solves the discomfort caused by the injection and drainage pressure to the patient and the defect that the traditional pressure detection equipment is easy to cause liquid leakage; further The purpose is to precisely control the amount of liquid injection and drainage, solve the pollution caused by using the same pipeline for the injection pipeline and the drainage pipeline, and avoid the risk of entering the human body due to the small amount of injected liquid

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