Precision Metal Machining, Inc. - Making Your Concepts Real MADE IN AMERICA

Custom Manufacturing of a Medical Device for the Surgical Industry

Mini Joint Distractor
Mini Joint Distractor

(Click on thumbnail to enlarge)


A mini joint distractor is a unique device that surgeons use for distraction and compression of bone cutting and fusion sites. At Precision Metal Machining, Inc., we were asked to manufacture these devices—which already had design issues—in a very short window of time. During the distractor's design, many issues arose regarding the intent of the product. Using our knowledge of material, form and fit, and design for manufacturability, we worked along with the customer's design engineer to improve functionality and durability. Suggestions regarding materials, hardware, and metal fatigue prevention made by us were subsequently incorporated into the design, and are still in use today. Still, the design went through numerous iterations during the early stages for various reasons. Our staff, however, drove the project to acceptance, even though the delicate final assembly required a degree of force during use.

Utilizing CNC lathes and mills as well as manual mills, the complex assembly components were machined out of 17-4 and 465 SS as well as aluminum to tolerances of ±0.0005". Components were then blasted, passivated, polished to a matte finish, assembled by welding, and marked via laser. Final inspections were conducted for dimensional accuracy, functionality, and torque. Very tight delivery requirements had to be met so the customer could test the new design features before committing to the production order. Working to ISO 13485:2016 standards, we delivered the prototypes in two weeks, completed the initial order in only four weeks, and completed the total order of 225 pieces in a short six weeks.

This project was a remarkable confluence of customer service, engineering, design for manufacturability, and material expertise that resulted in an extremely satisfied customer. To learn more, contact us directly.

Mini Joint Distractor Project Highlights

Project Name
Mini Joint Distractor
Project Description
The Mini Joint Distractor is a unique device that surgeons use for distraction and compression of bone cutting and fusion sites.
Capabilities Applied/Processes
Machining of Complex Assembly Components
Functionality & Durability Improvement
Design Assistance
Equipment Used to Manufacture Part
CNC Lathe, CNC Mill, Welding, Assembly, Manual Mill, Blasting, Polishing, Passivation, Laser Marking
Tightest Tolerances
Material Used
17-4SS, 465SS, Aluminum
Material Finish
Matte finish
Industry for Use
In Process Testing/Inspection Performed
Dimensional Inspection, Functionality, Torque
225 pieces
Delivery/Turnaround Time
Prototypes – 2 weeks. Initial order (50 pieces) – 4 weeks. Balance – 6 weeks
Delivery Location
Standards Met
ISO 13485:2016

View Other Examples of Our Work

Back to Top