ADW Next-Generation Micro Jet Pump: Precision Flow Control for Intelligent Minimally Invasive Applications

Micro Jet Pump: Redefining Microfluidic Drive with the Inverse Piezoelectric Effect

The micro jet pump represents an innovative integration of precision electronics and fluid dynamics. Its core operating principle is based on the inverse piezoelectric effect of piezoelectric ceramics—where the material undergoes mechanical deformation under an applied electric field, enabling precise conversion of electrical signals into micro-scale displacement.

When driven by an alternating current, the piezoelectric actuator vibrates at high frequency, inducing deformation of an elastic diaphragm. This results in rapid, periodic changes in the volume of a sealed pump chamber: gas is drawn in during expansion and expelled during compression through a micro-scale nozzle, forming a high-pressure, high-velocity jet. This mechanism enables continuous and stable airflow output.

Unlike conventional pumps that rely on motors and rotating components, the micro jet pump features no motor, no bearings, and no mechanical friction parts. The driving source, transmission mechanism, and pump body are fully integrated, achieving extreme structural simplification and highly efficient energy conversion.

Three Key Advantages Addressing Critical Application Needs

Amid the rapid evolution of medical devices toward miniaturization, portability, and intelligence, the micro jet pump demonstrates three outstanding advantages:

1. Miniaturization and Lightweight Design

Through a highly integrated and compact structure, the micro jet pump significantly reduces the complexity of traditional mechanical systems. The device can be as small as 21 mm × 19 mm × 3.2 mm, with a weight of only 3.5 g.

This makes it ideally suited for applications with stringent size and weight constraints, such as wearable medical devices and portable diagnostic instruments. Whether in wrist-worn blood pressure monitors or portable nebulizers, the micro jet pump delivers stable and efficient airflow within extremely limited space.

2. Flexible and Adjustable Output Performance

The output pressure and flow rate can be precisely controlled by adjusting the driving voltage. Increasing the voltage raises both pressure and flow, while decreasing it lowers them accordingly.

This flexibility enables developers to tailor performance parameters to different application scenarios and allows end users to benefit from personalized control.

3. Concentrated and High-Efficiency Airflow Output

With a precisely engineered micro nozzle, the pump delivers highly concentrated and directional airflow, minimizing energy loss.

Measured data shows:

• Output pressure ≥ 40 kPa (approx. 300 mmHg)
• Stable positive airflow maintained even under 40 kPa load

These characteristics demonstrate excellent load capacity and highly efficient gas delivery performance.

Broad Application Potential in Advanced Medical Technologies

Driven by the trends of miniaturization, portability, and intelligent healthcare, ADW’s next-generation micro jet pump is rapidly gaining traction across multiple applications, including:

• Wearable blood pressure monitoring systems
• Micro-dose drug delivery devices
• Negative pressure wound therapy systems

With its superior performance and compact design, the micro jet pump offers a powerful enabling technology for next-generation medical devices, paving the way for more precise, efficient, and patient-friendly solutions.