BoneWelding® Technology
The BoneWelding process employs ultrasonic energy to liquefy pre-defined polymeric components of the implant. These form an intimate bond between implant and bone.
01
Upon activation of the system by foot pedal, the BoneWelder® Ultrasonic Generator applies ultrasound to induce liquefaction of the polymeric component of the implant.
02
The polymer infiltrates three dimensional bone structures adjacent to the Elaris Pedicle Screw and, following a rapid solidification due to immediate cooling, forms a solid ring-like interface around the tip of the screw.
The polymer infiltrates three dimensional bone structures adjacent to the Elaris Pedicle Screw and, following a rapid solidification due to immediate cooling, forms a solid ring-like interface around the tip of the screw.
02
03
The interdigitation of the polymer with the bone provides adjunctive stabilization of the implant.
Bench and animal testing have demonstrated that the polymer enhancement provides appropriate dynamic pullout strength for up to 52 weeks as well as improved resistance to toggle loosening compared to screws without additional fixation.
A sheep study [1] evaluating the Elaris Pedicle Screw showed that the polymer had almost completely resorbed at 24 months, and there was no evidence of void formation after complete polymer resorption.
[1] „Risk assessment for Elaris® Pedicle Screws in sheep“
Musculoskeletal Research Unit (MSRU) Vetsuisse Faculty, University of Zurich, Switzerland