Micro Pumps for Infusion / Drug Delivery Systems
These micro pumps deliver a drug such as insulin at a very low flow rate. Four basic structures are offered with different features according to the requirements. With all the structures, the wetted part that is exposed to the drug is disposable. One of the most valuable features of our pumps is that we can provide a feedback system which employs a flowmeter to measure with an accuracy in the region of micro liters. This is ideal not only for highly accurate flow control but also for the detection of problems like clogging or kinking. We can customize all the types of our pumps, for instance, to increase the flow rate.
4 Basic Structures and Main Features
1. Tubing Pumps (Peristaltic Pumps)
Simple structure. Discharge volume control by the rotation of motor. No free flow.
2. Piezoelectric Diaphragm Pumps
Thin shape, low power consumption, and wide range of flow rate control.
3. Electro-osmotic Flow Driven Micro Syringe Pump
The syringe also works as a drug reservoir. Ultra-low power consumption. High discharge pressure.
4. Shape Memory Alloy Driven Micro Metering Pump
Totally disposable including the actuator. Thin and ultra-lightweight.
Planar Tubing Pumps (Chip Pumps)
In contrast to other companies' products, the tubing of our pump is stored in a chip which contains magnets so that the chip can be easily attached to and detached from the motor unit. This makes the replacement of tubing very easy. The video below shows how it works.
We can offer either a stepper motor for high precision flow control or an economical DC motor that requires less power consumption. When the motor stops, the tubing is closed by a roller, so a free flow (a small amount of leakage due to a head difference) does not occur.
The picture above is our smallest tubing pump, weighing only 5g. The flow per rotation is 2 μL.
The picture below is a product with a maximum flow rate of 200μL/min. Customization to further increase the flow is possible.
Piezoelectric Diaphragm Pumps (Piezo Pumps)
The wetted part is attached to the piezoelectric driving unit by a magnet and is therefore easily replaced. The product in the picture is just 6.9mm and 13g. Since its flow rate is finely adjustable by the voltage and the frequency, the piezo pump is ideal for feedback control.
Electro-osmotic Flow Driven Micro Syringe Pump
This product uses a unique pump called an “Electro-osmotic pump” for the driving unit, which slowly discharges a drug stored in a micro syringe without pulsation. Since it consumes very low power, the battery can be miniaturized. One of its features is that it can inject a drug at a higher pressure than other pumps. Please visit the link below to see how it works.
Shape Memory Alloy Driven Metering Pump
This is a pump that dispenses about 0.9μL of liquid per shot by shrinking a shape memory alloy wire. This makes it the most economical among the four basic structures because it does not use a motor or any other more expensive actuators. It is assumed that the whole pump will be replaced each use. The amount of injection is controlled by the number of pumping shots. The product in this picture is just 4mm and 1.7g. This light weight is also a feature. No free flow.