Production Of Portable Pressure Infusion Device

BackgroundRecently, in health emergency the number of people wounded in critical condition are many and complex, the most important work to deal with it is establish the intravenous access as soon as possible, to ensure the safety of transported the wounded.Existing infusion device works by gravity infusion, which need for medical evacuation on the way in holding the liquid and simultaneously moving the sick and wounded, Otherwise, the pipe may cause obstruction, leading to pipe extrusion, dropper upside down cause air embolism, which hurt the sick and wounded again.Common infusion fluid tube too long, easily give rise to tortuous course of the removal, pulling and oppression. Which cause infusion interruption, or infusion rate change.Bleeding wounded in the case of absence of blood, can not increase the blood volume and pressure.Common transfusion does not facilitate the carrying of sick and wounded, eating, toileting and other activities is not convenient. In the move process, the liquid containers fixed inconvenient, If it fall off, patients may be injured. Due to the limited number of health care, is difficult to deal with the large number of sick and wounded in the actual transfer process.In this study, we Invented a transfusion device, which include of portable, waterproof, anti-interference, stable performance, without power to support and significantly improve the speed of the positive pressure fluid infusion device. Suitable for field ambulance, also applies to the general ward patient check out use.ObjectiveInvented a transfusion device, which include of portable, waterproof, anti-interference, stable performance, without power to support and significantly improve the speed of the positive pressure fluid infusion device. Suitable for field ambulance, also applies to the general ward patient check out use.1.Through literature studies, field experiments comparing the methods, Select the main components of infusion devices to form the overall design.2.Through four rounds of expert consultation, design drawings, model making methods, invent Impeller-type flow indicator.3.Experiment of outside the human body:(1) Experiments of 100ml,250ml,500ml three kind of liquid. Record the amount per unit time of liquid flow and residual stress values of pressure bags. Study the relationship between pressure and liquid flow rate, and the differences in infusion bags with different specifications.(2) Experiment with 0.9% sodium chloride,5% glucose,10% glucose,5% glucose and sodium chloride,50% glucose,10% fructose,5% sodium bicarbonate,10,000 Timor (hydroxyethyl starch 130/0.4 sodium chloride) 706 on behalf of the plasma (hydroxyethyl starch 40 sodium chloride),20% mannitol, Record the amount per unit time of liquid flow, Learning at the same pressure conditions, fluid flow between different kinds of liquid.4. Clinical trials:Select 50 inpatients, measure their venous pressure of back of the hand, forearm, dorsum of the foot. Infusion using the infusion device without impeller, Record the flow regulator output of different scales.Results1.Completed the overall design of pressure infusion devices and select the best composition of the components.2.Designed the Impeller-type flow device, and made the liquid flow rate, Liquid drops and impeller speed Exchange List.3. Experiment of outside the human body:(1) The flow rate of three different types of liquid bag under high pressure have no statistical difference. (2) The same concentration of liquid in the same unit of time under high pressure fluid output was no significant difference, Different concentrations of liquid under pressure in the same infusion rate was significantly different. The higher the concentration the slower the liquid flow rate is, The lower the concentration the faster the liquid flow rate is.4. Clinical trials:The difference venous pressure of forearm and back of the hand have no statistical difference. The difference venous pressure of forearm and dorsal foot have statistical difference. The difference venous pressure of back of the hand and the dorsum of the foot have statistical difference. Three kinds of intravenous infusion speed of puncture site was no significant difference. According to the experimental data, re-calibration of the regulator scale value.ConclusionsPortable positive pressure infusion devices can pressure the liquid infusion, increase infusion rate, and using Impeller-type flow display device to replace Murphy's dropper control speed., not only to eliminate the possibility of air embolism and compression bags can easily fixed on the limb, without infusion stand, which can meet the demand for the ambulance of the infusion outside.