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

Machining, Assembly, Welding & Overmolding of a TKR Instrument for the Orthopedic Industry

Patella Cutting Guide
Patella Cutting Guide

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Patella cutting guides are instruments used by orthopedic surgeons during total knee replacement surgery. At Precision Metal Machining, Inc., when we were asked to manufacture them, our initial challenge was to coordinate the logistics of outsourcing and in-house capabilities to complete the orders in a timely fashion for the customer. This 29-piece assembly required coatings, overmolding on the handles, and the sourcing of parts (e.g. springs), all while accommodating suppliers' lead times—without compromising the client's expectations. To manufacture these instruments, all of our CNC equipment, as well as manual equipment, were used: CNC mills, lathes, and EDMs. Made from 17-2 stainless steel and titanium, the 11" long guides received a finish of Ra 32 prior to dimensional and aesthetic inspections. ISO 13485:2016 industry standards were met as well as demanding tolerances of ±.0005". We currently produce 1,000 of these patella cutting guides annually for delivery to a New Jersey customer.

Here you have the ability to produce and manage a high volume assembly of a demanding medical device on a consistent basis. To learn more about this project, or the processes used to manufacture it, see the table below or contact us directly.

Patella Cutting Guide Project Highlights

Project Name
Patella Cutting Guide
Project Description
Patella Cutting Guide is an instrument used during a total knee replacement surgery performed by an orthopedic surgeon.
Capabilities Applied/Processes
Outsourcing Logistics
Inventory Management
Equipment Used to Manufacture Part
CNC Mill
CNC Lathe
Overall Part Dimensions
11” long approx fully assembled
Tightest Tolerances
Material Used
17-4 SS, Titanium
Material Finish
Ra 32 or better
Industry for Use
Medical (Orthopedic)
In Process Testing/Inspection Performed
Dimensional and aesthetics
1000 pieces annually
Delivery/Turnaround Time
10 weeks ARO
Delivery Location
New Jersey
Standards Met
ISO 13485:2016

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