Fully automatic timed and quantitative infusion pump

What issues should we pay attention to when using an infusion pump?

Answer: 1. Pay attention to whether the gear position is correct. The gear is located above the pump door of the infusion pump.

2. When setting the infusion volume, because the volume of liquid in the hanging bottle itself is not completely standard, and the infusion set itself needs to be filled with liquid, the preset volume must be slightly smaller than the sum of the infusion volume and the amount of medicine to prevent the liquid from being infused before it is finished. Call the police.

3. When setting the number of milliliters and the number of drops, the two are confused.

4. When using an ordinary infusion set, the infusion set should be pulled down a certain distance after 7-8 hours. Ordinary infusion sets are made of plastic and have poor elasticity. The tube will be deformed and squeezed out of round after being accumulated by the pump for a period of time, which will significantly affect the accuracy of infusion.

5. Every time you change the brand of infusion set, recalibrate the accuracy of the infusion pump.

What are the causes of bubble alarms? How to deal with it?

Answer: (1) There are bubbles in the infusion tube. Take out the infusion set and pop the bubbles with your hands;

(2) If the ultrasonic probe is dirty, wipe it with an alcohol cotton ball and clean it;

(3) The wall of the infusion set is dirty or contains talcum powder, wipe it clean;

(4) The infusion set is not installed in place and needs to be reinstalled; an ordinary infusion set is repeatedly squeezed by the pump piece at the same part for a long time, and the elasticity becomes poor and the infusion set is deformed. It is easy to generate bubbles in this part. Pull the infusion set down ten centimeters. Let the new section squeeze.

(5) Circuit failure.

What are the common phenomena of inaccurate accuracy caused by misoperation or misconceptions by medical staff?

Answer: (1) Mistaking the number of drops for the milliliter input button will cause the flow rate to slow down by 2-4 times.

(2) Mistaking milliliter for drop number input button causes the flow rate to increase 2-4 times.

(3) After replacing infusion sets of different brands, the gear switch is not adjusted due to changes in the tube wall, diameter, and elasticity, resulting in large infusion accuracy errors.

(4) The number of drops of liquid in the drip pot of the infusion set is not equal to the exact milliliter volume of infusion, because the number of drops of medicinal liquids with different viscosity is different.

(5) The infusion set is not installed properly and the tube is outside the positioning nail, resulting in inaccurate accuracy.

(6) Uneven droplets in the drip pot do not mean uneven liquid output from the needle. Because there is a long stretch of liquid from the dripping pot to the needle to buffer, just like the water flowing into the Three Gorges Reservoir is uneven, but the water flowing out from the Three Gorges Dam gate can be uniform. The medicinal liquid output from the needle of our infusion pump is relatively uniform, more even than that of many foreign infusion pumps, because there is a compensation circuit in our pump that specifically solves the problem of uneven medicinal liquid.

(7) The infusion time is too long, more than ten hours, and some medical solutions may have bubbles accumulated in the pump head, causing an alarm. The correct way to use it is to open the pump door after using an ordinary infusion set for 7-8 hours, and move the infusion set downward for a while before infusing.

How does an infusion pump work?

Answer: The infusion pump is under the control of a microcomputer. The motor drives the peristaltic pump, so that the pump body and pump blades squeeze the infusion tube sequentially from top to bottom, so that the medicinal liquid is injected into the human body according to the flow rate and flow rate set by the program. When the set infusion is reached When measuring, it will automatically alarm and stop the infusion.

What is an infusion pump used for? What benefits can it bring to infusion after use?

Answer: The main functions of the infusion pump:

(1) Accurately control flow rate and flow rate (including large flow rate and high flow rate);

(2) Extremely high safety (with a variety of monitoring and alarm devices);

(3) Constant temperature.

The significance of infusion after use:

(1) Improve the therapeutic effect and achieve the purpose of treatment: Some drugs require rapid administration under pressure (such as mannitol), while some drugs can only be administered slowly but not quickly. In these cases, the infusion pump can regulate the administration. speed effect;

(2) It has various alarm functions such as bubble, blockage, and infusion completion to avoid unnecessary harm to patients and reduce the workload of nursing staff;

(3) While improving the treatment effect, it can also bring economic benefits to the department.

Why not develop an infusion pump based on the number of drops?

Answer: (1) For domestic ordinary infusion sets (including special infusion sets), the accuracy error of ml and number of drops is relatively large, which is ±10%;

(2) Different medical solutions such as glucose and sodium chloride solutions have different viscosities, and their droplet sizes are different. Droplets with higher viscosity should be larger;

(3) The specific gravity of different medicinal liquids is different. The smaller the specific gravity, the larger the number of drops;

(4) The infusion flow rate is very different, and the size of the droplets is also different at different flow rates. The smaller the flow rate, the larger the droplets will be;

(5) The verticality of the dripping pot is different, and the size of the droplets is also different. The droplets of the tilted dripping pot are larger.

As can be seen from the above, there are many factors that affect the size of droplets, and the size of droplets varies greatly. Although the infusion pump controls the number of drops very accurately, the error in the actual medicine liquid received by the patient is very large, and the volume measurement based on The unit of the infusion pump is ml/h, which is not affected by the above-mentioned factors, and the infusion accuracy is always maintained at a very high level.

Why are the droplets in the drip pot uneven during infusion with the infusion pump, and how to deal with it?

Answer: During the operation of the infusion pump, when the highest point of the pump moves to the lower end and then returns to the upper end, during this return period, the infusion cannot proceed normally and will pause for a moment. Each time the pump rotates, it must be repeated. The phenomenon of pause in infusion is caused by the structure of the infusion pump, and this is true for all domestic and foreign peristaltic pumps. This is the main reason why the droplets in the drip pot are uneven.

When the infusion flow rate is relatively high, the pause time is very short. This phenomenon is harmless to the human body and no measures need to be taken, because the human heart beats and the blood flow in the human body also pulsates. When the infusion flow rate is very low, the pause time is relatively long, which will have adverse effects on the human body. The designer of the pump used a compensation method, that is, when the infusion pump is about to stop, the microcomputer immediately makes the motor run at a very high speed, thus greatly shortening the infusion pause time, so the droplets seen on the needle are Relatively even. Our pumps below 100ml/h have a compensation design to avoid the impact of infusion on patients.

Why is it easy to have inaccurate accuracy in winter-spring and winter-autumn seasons?

Answer: The temperature in winter-spring and winter-autumn seasons is relatively low, often below 12°C. In this case, the material of the infusion set becomes hard and elastic, and it is difficult to return to its original shape after being squeezed by the infusion pump (especially at high speed). high and long-term operation), so it is easy to affect the infusion accuracy.

Note: As long as the standard ordinary infusion set can meet the accuracy requirement of ±5% when the room temperature is >20°C.