Orthopedic surgery is often misunderstood as a "rough procedure," but in reality, it requires extremely high precision. Spinal surgery, in particular, requires strict avoidance of the risk of nerve damage. Traditional osteotome and forceps osteotomy methods used in the past were prone to slippage and could easily damage spinal nerves. The introduction of ultrasonic osteotome technology, with its safety, efficiency, and precision, has become a core tool in spinal surgery. Its "bone-cutting without damaging flesh" technique effectively avoids nerve damage, ensuring patient safety and a smooth surgical procedure.
Ⅰ. Ultrasonic Osteotomy Breakthrough
As an innovative technology in spinal surgery, ultrasonic osteotomy technology, with its core advantage of "cutting bone without damaging flesh," significantly improves surgical safety, efficiency, and precision. It excels in reducing the risk of nerve damage, providing patients with more reliable surgical procedures.
Ⅱ. Unique Features of the Technology
The core advantage of the ultrasonic osteotomy lies in its tissue-selective cutting: its operating vibration frequency of 24-30kHz effectively cuts mineralized hard tissue, bone, and calcified tissue with high acoustic impedance. However, soft tissues with low acoustic impedance, such as blood vessels, nerves, and mucosa, require frequencies above 50kHz to be damaged. Within the ultrasonic osteotomy's operating range, these soft tissues only elastically contact the blade, vibrating slightly, completely absorbing the energy and preventing them from being cut. This minimizes the risk of damage to nerves, spinal cord, blood vessels, and dura mater.
At the same time, the ultrasonic bone knife has a cutting accuracy of micron level: the vertical vibration amplitude of the blade is 20~60μm, the horizontal vibration amplitude is 60~200μm (almost invisible to the naked eye), and the bone cutting width is only 0.5~0.7mm, far exceeding the 3~5mm accuracy of traditional tools; and it has a hemostatic effect and "self-spraying" function, which can ensure neat bone cutting edges and reduce bone fragments, bone damage and unnecessary bone loss.
Ⅲ. Clinical Advantages of the Ultrasonic Osteotomy
1. High Safety
Using micro-vibration technology, it selectively cuts only hard tissue. Combined with an anti-scratching function and a cool cutting mode, it significantly reduces the risk of mechanical and thermal damage to soft tissue. Its simple operation, low vibration amplitude, and excellent stability facilitate precise bone cutting. Its safety has been widely confirmed in clinical literature.
2. Excellent Efficiency
It significantly outperforms traditional tools in delicate procedures: single-segment posterior thoracic spinal canal resection takes an average of only 3 minutes; resection of one cervical, thoracic, or lumbar laminectomy takes 1-2 minutes, and resection of three laminectomies takes an average of 3.6 minutes. In comparison, a traditional Kerrison rongeur with a high-speed drill requires 10-15 minutes to resection three laminectomies.
3. Reduce intraoperative bleeding and promote bone healing
The thermal effect directly stops bleeding. The "cavitation effect" generated during operation (bubbles formed in the liquid at the working end, which imploded to generate shock waves) limits blood seepage, reduces bone bleeding, and maintains a clear surgical field. Micron-level cold cutting protects microstructures such as bone cells and collagen fibers in the osteotomy area, reducing bone loss and thermal damage, and avoiding interference with cytokine and growth factor signaling related to bone healing, thereby ensuring the ability of the resected bone surface to fuse with the bone graft and reconstruct its structure after surgery.