Abstract
Currently, the hospital used microinjection pump commonly known as "micro-pump" in the operating room to use more wards, to some extent alleviate the medical staff in the labor intensity, to provide sustained delivery, avoided a drug delivery and other peak effect on the human liver and kidney and other organ damage, greatly reducing the total amount of medicinal, to bring the Gospel of patients to medical staff convenience. As micro-pump to higher prices and promotes the use of domestic prices of a few thousand to 10,000 yuan, and import prices from 20,000 to 50,000 yuan,in a certain extent, limited its use, and hence the price factor is whether it can use its root causes. Clinical mercury sphygmomanometer in each of about 100 yuan, at all levels of medium and small hospitals generally use is a good proof. Therefore, produced a small microinjection pump is very meaningful.
Produced a small microinjection pump and the current clinical use of micro-pump comparison, must be small in size, light weight, function over all, the infusion volume control is accurate, practical and easy to carry, which is suitable for all kinds of treatment and clinical and laboratory use. The other reflected in the price advantage, which is low-cost, 1000yuan in control, but it is essential to the quality of reliable, conducive to large-scale clinical application.
Because of this, the graduates will be designed to Trial producing a small size, light weight, than all functional and practical, easy to carry and less costly microinjection pump, mainly for clinical precision infusion liquid medicine. This paper presents such a microinjection pump control system design process.
Microinjection of this pump has the following major functions : 1. Under established parameters, automatic calculation and control of injection speed (0.1-999ml/h); 2. Injection volume injection has been set up and shows the cumulative total (0.1-9999ml); 3. Rapidly advancing (200ml/h); 4. Have Standby (SPECIAL suspended) function; 5. Can be conducted on the following report : obstruction of internal errors, ahead of the end of injection advance warning, the end of injection ;6. Automatic detection syringe size (20ml,50ml); 7. With "self-censorship" function; 8. Optional battery (external). According to the above functions, The author access to the relevant literature and comparative analysis of the existing domestic and international microinjection pump on the basis of the advantages and disadvantages, set of control system design. The microinjection pump control system to control STC89C58 microcontroller core, hardware design modular structure .
Keywords : microinjection pump control system hardware design MCU
