Foshan Liangya Dental High-Speed Handpiece – Anti-Backflow System

Foshan Liangya Dental High-Speed Handpiece – Anti-Backflow System: A Dual Breakthrough in Technological Innovation and Clinical Safety

In the field of oral healthcare, dental high-speed handpieces serve as essential diagnostic and treatment equipment, with their performance and safety directly impacting treatment efficiency and both physician and patient health. Leveraging over a decade of deep industry expertise, Foshan Liangya Dental Equipment Co., Ltd. has developed high-speed handpiece products centered around an innovative "anti-backflow system." Through structural innovations and material upgrades, the company has addressed a longstanding industry challenge—where traditional devices often pose risks of cross-infection—establishing itself as a leading benchmark in China's dental equipment sector.

Anti-reflux Technology: A Breakthrough Design from Principle to Clinical Application

When dental high-speed handpieces operate at high speeds, the coordinated interaction between the turbine and the water system can easily create negative pressure. This phenomenon may cause blood, saliva, and even pathogens from the patient's oral cavity to be drawn back into the internal components of the device, leading to biofilm contamination. Research shows that untreated dental water systems can harbor tens of thousands of bacteria per milliliter, while the total bacterial population within biofilms can soar beyond 10 million—making these systems a significant source of hospital-acquired infections.

Liangya Company's anti-backflow system features a triple-barrier design:

1. **Elastic Shaft Seal Cover**: Made from wear-resistant, medical-grade silicone, it features a conical braking surface that rapidly engages upon equipment shutdown, effectively blocking the path of liquid backflow. At its center, a high-precision metal ring is embedded to prevent arc-shaped deformation of the seal cover, thereby maintaining an unobstructed flow area and ensuring stable rotational speed and power output.

2. **Non-Elastic Shaft Seal Cover**: Serving as an auxiliary support structure, this component prevents excessive expansion of the elastic shaft seal cover, extending its service life to more than three times that of traditional models.

3. **Aerodynamic Optimization**: By refining the clearance between the turbine rotor and bearings, the exhaust gas is directed to create a positive pressure field, effectively preventing external liquids from infiltrating.

Product Matrix: Clinical Solutions Covering All Scenarios

Liangya Company has launched four series of high-speed handpieces with anti-backflow features, tailored to meet diverse clinical needs.

- **Four-Point Water Spray Series** (LY-M4011/LY-M4029): Features a 360° circular water spray design, boosting cooling efficiency by 40%, and is ideal for complex dental preparation scenarios.

- **Children's Dedicated Series** (LY-XS1001): The head diameter is reduced to 8mm and paired with a low-noise turbine (≤58 dB), helping to ease children's fear during medical treatments.

- **Fiber Optic Quick-Connect Series** (LY-M8004): Integrates an LED shadowless lamp with a fiber optic light guide system, delivering illumination intensity up to 30,000 Lux and effectively addressing the challenge of limited visibility during deep dental procedures.

- **Stainless Steel Kit Series** (LY-H101/LY-H201): Crafted from aviation-grade 316L stainless steel, these kits are resistant to high-temperature sterilization up to 135°C, making them ideal for hospital central sterilization processes.