“A superior arthroplasthy surgical method going beyond just ‘removing’ the bone cement.”
Axiom™ Ultrasonic Cement Removal System:
A Visionary Device Offering Better Results
- Selectively remove cement
- Preserving host bone
Mechanism of Action
Axiom™ Ultrasonic Cement Removal System is used in the removal of synthetic materials like polymethylmethacrylate bone cement (PMMA) in large joint revision procedures. The ultrasonic vibration at the tip of probe softens the cement around the implant. The system is designed and developed to facilitate the removal of bone cement during revision arthroplasty whilst controlling bleeding. The softened material is then scrabbed from the host tissue. Vibration-generated temperature increase at the tip can transform the PMMA from a rigid material to a fluffy malleable form which in turn beefs up the removal process of PMMA from the contact circumference. Technically speaking, the phenomenon of glass transition temperature is realized in changing the form of material by upcoming micro movement and resulting in changing elasticity modules, heat conduction and thermal expansion.
Principle of Operation
Ultrasonic surgery is realized between 20-60 kHz. In principle, the outlet voltage is supplied at 50 to 60 hertz. The generator boosts the frequency to 28 kHz. The resulting ultrasonic frequency is delivered into the hand-piece and amplified to the motion. After activation, the handle probe can vibrate 28.000 strokes per second and results in cavitation at the surgical site. The system uses this cavitation to soften the cement holding the implant in place.
1) Selectively remove cement
Axiom™ Ultrasonic Cement Removal System removes cement selectively during revision arthroplasty. Bone cement has a high capacity for absorbing energy and low thermal conductivity. The substantial temperature increase of the system protects the surrounding tissue during the removal of cement.1
2) Preserving host bone
Axiom™ Ultrasonic Cement Removal System preserves host bone. Ultrasound affects cancellous bone and it is removed when subjected to energy levels applied while removal of cement. Whereas due to design of the probe and levels of energy that are used, cortical bone is not affected. Ultrasound could not be absorbed by bone just as readily as cement and due to both audible and tactile mechanism of the system, probe position within the bone could be detected by surgeons.2-3
Axiom™ Cement Removal System and Accessories may be used as an adjunct to or substitute for manually done PMMA removal procedure in orthopedic surgeries such as hip joint shoulder arthroplasty revision surgeries.
Indications
The Axiom™ Cement Removal System & Accessories are indicated for removal of PMMA of in arthroplasty revision surgeries and to be used to scrab, debride, fragment, aspirate and remove undesired and unwanted hard and soft tissue.