Technological advances in medical equipment and implants have driven
worldwide spinal implant sales to $10 billion annually.
Like orthopedic implants used for joint reconstruction and the surgical
fixation of a bone fracture, spinal implants are subject to very specific and
strict surface finishing requirements.
Mass finishing and shot blasting play a key role 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.
Rosler Metal Finishing has extensive experience in surface finishing spinal implants using mass finishing, shot blasting, and a combination of both methods.
In a series of posts, we’ll analyze the specific surface finishing
requirements for spinal implants based on their functional and performance
characteristics and describe the respective mass finishing and shot blasting
equipment and methods available to fulfill these requirements.
Rosler Metal Finishing understands that trauma implants and medical devices are subject to stringent quality standards. Any material defect or malfunction can have catastrophic consequences for a patient. That’s why we take our work in the trauma implant field very seriously.
Also known as osteosynthetic
implants, trauma implants include pins, screws, and plates used to surgically
fix a bone defect. Implant manufacturers must select the right material and attain
the required surface finish to ensure patient safety and best results.
In a series of blog posts, we’ll
answer the most common questions about trauma implant materials and finishes.
We begin with a basic question: What
materials are used in trauma implants?
The answer, in short, is usually stainless steel or titanium.
Does the material performance affect the selection?
In order to select the best material, trauma implant manufacturers must understand the specific performance attributes of the implant they are creating. Implants are subject to very strict performance and reliability standards. Selected materials must act as bone stabilizers and healing support while meeting the following guidelines.
It is not surprising that trauma implants, along with other medical devices, are subject to the most stringent quality standards. Any material defect or malfunction can have catastrophic consequences for a patient.
For implants, the two key issues for manufacturers to deal with are selecting the right material and attaining the required surface finish. The finishing requirements can range from simple cleaning or deburring to surface smoothing and high-gloss polishing. Components exposed to a lot of tensile and bending stress even undergo a shot peening process to improve their fatigue life.
Some implants must have a textured or “rough” finish to promote osseointegration, which is the attachment of surrounding bone tissue to the implant. Other trauma implants require a very smooth surface to prevent the bone from attaching itself to the implanted material.
We’ve created anotherexclusive surface finishing guidebookto cover this complex topic, in which we will discuss the surface finishing needs of trauma implants and the impact finishes have on their functionality and performance. Examples of mass finishing and shot blasting applications will also be presented followed by detailed machine reports of actual applications used in the industry today.
If you are interested in sending us your parts forFREE process development, contact us here.