Trough-Shaped Osteotome Blade for Bone Cement Removal

The patent employs ultrasonic vibration at frequencies between 20-100 kHz to vibrate the blade, creating resonant oscillations that significantly enhance the cutting efficiency through bone cement. This mechanical vibration principle transforms the manual chiseling process into a high-frequency oscillating cutting action, thereby increasing productivity while maintaining relatively simple equipment requirements.

The patent changes the operational parameters by introducing controlled ultrasonic vibration frequencies (20-100 kHz) and amplitudes (1-10 micrometers) to the blade. These parameter changes enable the blade to efficiently fracture and remove bone cement through resonant oscillations, resolving the contradiction between equipment simplicity and removal speed.

The patent applies local quality by concentrating the ultrasonic vibration energy precisely at the blade tip where cutting occurs, rather than vibrating the entire blade uniformly. This localized vibration application improves cutting efficiency at the point of contact while minimizing overall device vibration and associated messiness. The blade geometry is also optimized with specific tip configurations to contain debris and reduce splattering.

The patent converts the potentially harmful high-frequency vibration that could cause excessive heat and material degradation into a beneficial cutting mechanism by operating within controlled frequency (20-100 kHz) and amplitude (1-10 micrometers) ranges. The vibration energy is harnessed to efficiently fracture bone cement through resonant oscillations, transforming what could be a source of heat and mess into a controlled, effective cutting action.

The patent employs ultrasonic vibration at frequencies between 20-100 kHz to vibrate the blade, creating resonant oscillations that significantly enhance the cutting efficiency through bone cement. This mechanical vibration principle transforms the manual chiseling process into a high-frequency oscillating cutting action, thereby increasing productivity while maintaining relatively simple equipment requirements.

The patent replaces the thermal softening mechanism (which relies on heat generation to melt cement) with a mechanical vibration-based cutting mechanism. Instead of using heat to soften and melt bone cement slowly, the ultrasonic-vibrated blade directly fractures and removes cement through high-frequency mechanical oscillations, dramatically increasing removal speed while eliminating the need for thermal processing.