What Is An Ultrasonic Blood Collection Tube Atomizing Spraying Equipment?

What Is An Ultrasonic Blood Collection Tube Atomizing Spraying Equipment?

Ultrasonic blood collection tube atomizing spraying equipment is a precision medical device specifically designed for uniformly spraying anticoagulants, coagulants, and other reagents onto the inner wall of vacuum blood collection tubes.

It's called "ultrasonic" spraying because it utilizes ultrasonic atomization technology. The equipment uses a slender, "penetrating" ultrasonic nozzle that extends directly into the blood collection tube, atomizing the reagent liquid into micron-sized droplets and precisely spraying them onto the tube wall.

Compared to ordinary spraying equipment, this equipment has the following key features:

1. Core Structure and Working Principle

Probing Nozzle: This is the most crucial component of the equipment. The nozzle has a slender tip, with an outer diameter typically smaller than the inner diameter of the blood collection tube (e.g., supporting tubes with a minimum diameter of 25mm), allowing it to extend into the tube cavity for spraying.

Ultrasonic Atomization Principle: The nozzle incorporates a piezoelectric transducer, converting high-frequency electrical energy into mechanical energy (typically 20kHz-120kHz). When liquid reagents (such as heparin and EDTA) flow through the nozzle tip, they are broken into uniformly sized, extremely slow-moving droplets under ultrasonic waves, forming a "soft mist."

Precision Liquid Supply System: Equipped with a precision metering pump, it achieves precise control of extremely low flow rates (down to 0.001 ml/min), ensuring a highly consistent reagent dosage in each blood collection tube.

2. Technical Advantages: Compared to traditional "two-fluid spraying" (using high-pressure gas atomization) or "centrifugal spraying" processes, ultrasonic spraying technology has significant advantages in blood collection tube manufacturing:

Extremely Uniform and High-Quality Coating: The droplet size generated by ultrasonic atomization is very uniform, forming a coating of uniform thickness without "wall adhesion" or "agglomeration." This is crucial for ensuring the accuracy of subsequent blood test results—uneven coating can lead to incomplete blood clotting or needle blockage.

Extremely High Material Utilization: Due to the "soft mist" and directional spraying, there is almost no splashing or over-spraying. Material utilization is typically over 85%, approximately four times that of traditional two-fluid spraying. This significantly reduces costs for expensive reagents (such as heparin).

Suitable for complex internal surfaces: Because the nozzle extends directly into the tube, uniform coverage is achieved on both smooth inner walls and tubes with special structures.

Clog-free and easy to maintain: The ultrasonic vibration itself has a "self-cleaning" function, preventing solid particles in the reagent (such as silica particles used for coagulation) from clogging the nozzle, greatly reducing equipment downtime for maintenance.

3. Practical Application Scenarios

This equipment is mainly used in automated production lines for vacuum blood collection tubes, spraying appropriate reagents onto blood collection tubes for different purposes:

Anticoagulant tubes (purple/blue caps): Sprayed with heparin, EDTA, or sodium citrate to prevent blood clotting for plasma or whole blood testing.

Coagulation-promoting tubes (red/yellow caps): Sprayed with silica or thrombin to accelerate blood clotting and quickly obtain serum.

Other special tubes: Used for spraying additives such as sodium fluoride into blood glucose tubes.

4. Production Efficiency

This equipment is ideal for large-scale industrial production. By arranging multiple nozzles (e.g., 5, 10, or even more) in parallel, it can be directly integrated into existing production lines to achieve high-speed spraying. Typical system capacity can reach 12,000 tubes/hour.

In summary, the ultrasonic blood collection tube atomizing spraying equipment is a specialized automated device that utilizes ultrasonic atomization technology and a "penetrating" nozzle to achieve high-precision, high-efficiency, and high-quality spraying of reagents onto the inner wall of blood collection tubes.