worldwide sales at nearly $10 billion annually, there is a high demand for
spinal implants. These implants are subject to very specific and strict surface
finishing requirements to ensure longevity and fixation to bone.
Mass finishing and shot blasting play key roles in creating the right finish for spinal implants, not only for intermediate surface treatment after forging, casting, machining, additive manufacturing, etc., but also for placing the final surface finish before implantation.
Along with the material choice discussed in Part 1 of our Spinal Implants series, surface treatment is the most important factor affecting the functionality, performance, and longevity of spinal implants and instruments.
During the manufacturing process they may have to undergo multiple
finishing operations including burr removal from previous manufacturing
operations, rounding of sharp edges, general surface cleaning, surface
smoothing, and, frequently, high gloss polishing.
Treatment steps can also include surface texturing/profiling and shot peening, areas Rosler Metal Finishing has extensive experience in.
This blog post will focus on the finishing requirements and challenges
of spinal implants as well as the solutions provided by mass finishing and shot
blasting processes and the associated costs.