Miniature blood temperature varying system based on computerized distributed control

Abstract

The blood temperature varying system based on distributed computer control consists of one extracorporeal blood circulation subsystem and one monitoring subsystem. The extracorporeal blood circulation subsystem includes a blood transfusion pipe, a heat exchanger, a water pump, an oxygenator, a post blood treater and a centrifugal pump. The monitoring subsystem includes a flow sensor, a heating / cooling device, a centrifugal pump rotation controller, a host control computer for precise temperature control, information display and data saving, and a multi-point temperature measuring instrument.

Description

technical field [0001] The invention relates to the field of blood temperature change, in particular to a micro blood temperature change system based on computer distributed control. Background technique [0002] Blood temperature change has been widely used in clinical medicine, such as in extracorporeal circulation whole body cancer perfusion hyperthermia, human body rewarming and organ transplantation. [0003] Over the years, local treatment methods such as surgery, radiotherapy and chemotherapy have played an important role in cancer treatment, but cancer does not only stay in the cancerous part, it can use the blood circulatory system, lymphatic system or directly spread and metastasize. other parts, and continue to proliferate there. Therefore relying solely on surgical operations, local treatment methods such as radiotherapy are not enough, and there are certain traumatic or toxic side effects to varying degrees. Corresponding to the local treatment method is the s...

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Problems solved by technology

For example, the U.S. patent Apparatuses and processes for whole-body hyperthermia describes a blood temperature-changing device, which uses a peristaltic pump in terms of power drive, but the peristaltic pump has a greater destructive effect on blood. In addition, the blood temperature-changing device also has The software and hardware are not easy to expand, the device is large in size, expensive and other deficiencies (see reference [1] for detailed information about the device: AshStephen R. 2001), there is also a lack of description of the control part in this patent

In another US patent, Warmer for medical treatment and its control method, a variable temperature control method is described, but the control algorithm of this patent is too simple to ensure the control accuracy required for surgery, and there is no image interface display function, variable temperature data Also not easy to preserve (see reference [2] for detailed information about this patent: KoonPark, Warmer for medical treatment and its control method.United States Patent Pub.No.US20030176903Sep.18,2003)

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