CNC Milling
Precision 3-, 4-, and 5-axis CNC milling for complex surgical instrument geometries. Delivers consistent repeatability and tight tolerances critical for medical device components.
Surgical instruments demand zero compromise — and Criterion Precision Machining delivers exactly that. From micro-diameter Swiss-turned components to complex multi-axis milled parts, we produce surgical instrument components to tolerances as tight as ± .0002". ISO 13485 certified and FDA registered, we're the precision partner operating where failure is simply not an option.

Comprehensive precision machining capabilities purpose-built for surgical instrument components that demand exacting tolerances and absolute reliability.
Precision 3-, 4-, and 5-axis CNC milling for complex surgical instrument geometries. Delivers consistent repeatability and tight tolerances critical for medical device components.
High-precision CNC turning for cylindrical and complex surgical instrument parts, achieving tolerances down to ± .0002" with smooth surface finishes on titanium and stainless steel.
Specialized Swiss turning for small-diameter, intricate surgical instrument components. Handles diameters as small as .010" with micro-features, deep cuts, and complex geometries.
Production-intent surgical instrument prototypes built on the same machines and to the same compliance standards as final production runs, enabling seamless transition to full-volume manufacturing.
Multi-point precision inspection using CMM, OASIS optical systems, and Keyence measurement technology. Certificates of Conformance and final inspection reports provided at no extra charge.
Expert machining of titanium, stainless steels, PEEK, specialty plastics, and high-performance alloys commonly required for implantable and handheld surgical instrument components.
Surgical instruments operate at the intersection of engineering precision and human outcomes — there is no margin for error. Criterion Precision Machining brings over 70 years of manufacturing expertise, ISO 13485 certification, and advanced multi-axis machining to produce components that meet the strictest FDA and medical device standards. Whether you need slender Swiss-turned tissue-handling parts or complex 5-axis milled instrument bodies, our team delivers documented, repeatable precision that surgical OEMs can depend on.

See how leading medical device manufacturers rely on Criterion for mission-critical surgical instrument components.
From our Brook Park, Ohio facility, Criterion delivers the certifications, capabilities, and culture that surgical instrument manufacturers demand.
Fully ISO 13485 and ISO 9001 certified with FDA and ITAR registration, ensuring every surgical component meets rigorous medical device quality standards.
Advanced Swiss, CNC turning, and 5-axis milling capabilities achieve sub-half-thousandth tolerances essential for precision surgical instrument parts.
Founded in 1953 and now third-generation owned, Criterion brings decades of accumulated expertise serving medical device, aerospace, and defense industries.
A WBENC-certified women's business enterprise, Criterion supports supplier diversity initiatives while delivering top-tier precision machining for surgical OEMs nationwide.
Experienced professionals dedicated to precision, quality, and mission-critical delivery.

President
As the third-generation owner and President of Criterion Precision Machining, Tanya DiSalvo leads a company with more than 70 years of precision machining heritage. Under her leadership, Criterion has sharpened its focus on the most demanding industries — medical device, aerospace, defense, and photonics — where zero-defect performance is non-negotiable. Tanya has guided strategic investments in advanced multi-axis CNC equipment, quality management systems, and ISO 13485 certification to ensure Criterion remains a trusted partner for surgical instrument manufacturers. Her commitment to people, process, and precision defines the culture at Criterion's Brook Park, Ohio facility. A WBENC-certified women's business enterprise under Tanya's ownership, Criterion continues to grow as a supplier-diversity-qualified precision machining partner for leading medical device OEMs across the United States.

Estimator/Project Manager
Mike Pinchot serves as Estimator and Project Manager at Criterion Precision Machining, acting as a key point of contact for customers navigating complex surgical instrument machining projects from initial quote through production delivery. With a deep understanding of Criterion's Swiss turning, CNC turning, and multi-axis milling capabilities, Mike translates customer requirements into accurate, competitive estimates while managing project timelines to ensure on-time delivery. His role bridges the customer relationship and the shop floor, coordinating with quality, programming, and production teams to keep mission-critical medical device projects on track. Mike's practical knowledge of tight-tolerance machining and material considerations makes him an invaluable resource for medical device OEMs seeking reliable precision manufacturing partnerships.

Chief Financial Officer
David Glass serves as Chief Financial Officer at Criterion Precision Machining, overseeing the financial operations and strategic planning that support the company's growth in the medical device, aerospace, and defense sectors. His financial stewardship ensures Criterion maintains the investment capacity to continuously upgrade precision machining equipment, quality systems, and compliance infrastructure required to serve surgical instrument manufacturers. David's work underpins the operational stability that customers depend on when partnering with Criterion for long-term, mission-critical supply agreements. His leadership contributes to Criterion's ability to scale production capacity while maintaining the rigorous cost and quality controls that define the company's reputation across more than seven decades of precision manufacturing.

Quality Manager
Kelly Marflak is the Quality Manager at Criterion Precision Machining, responsible for maintaining and advancing the company's ISO 13485 and ISO 9001 certified quality management system. Kelly oversees multiple precision inspection touchpoints built throughout the manufacturing process, including the Global Advantage CMM with TESTASTAR-sm probe, the OASIS Optical Automatic Smart Inspection System, and Keyence multi-dimension measuring systems. Her role ensures every surgical instrument component leaving Criterion's Brook Park facility meets documented acceptance criteria and is accompanied by the required Certificates of Conformance and inspection reports. Kelly's dedication to process discipline and continuous improvement is central to Criterion's ability to serve medical device customers who operate in zero-tolerance, life-critical environments.

Internal Systems Manager
Kellyanne Gottschalk manages Criterion Precision Machining's internal systems, overseeing the ProShop ERP platform and operational workflows that keep the company's precision machining processes running efficiently and transparently. Her role ensures that job routing, documentation, scheduling, and compliance data flow seamlessly between departments — from initial order entry through final inspection and shipment. For medical device customers requiring complete traceability and documentation integrity for surgical instrument components, Kellyanne's work is essential. By maintaining robust ERP-driven processes, she supports Criterion's ability to scale production without sacrificing the quality oversight and regulatory documentation that ISO 13485 certification and FDA registration demand.

Customer Service
Nilda Feliciano is a key member of Criterion Precision Machining's customer service team, serving as a reliable and responsive point of contact for medical device manufacturers, surgical OEMs, and other mission-critical industry customers. Her role encompasses order coordination, customer communication, and ensuring that clients receive timely updates on their precision machining projects. Nilda's attentiveness to customer needs and her understanding of Criterion's capabilities help facilitate smooth project handoffs, expedite urgent requests, and build the long-term relationships that define Criterion's reputation as a trusted manufacturing partner. Her dedication to exceptional service reflects Criterion's people-powered culture and commitment to going beyond the part.

Office Administrator
Bonnie Paletta serves as Office Administrator at Criterion Precision Machining, providing essential organizational support that keeps the business running smoothly day to day. Her responsibilities span administrative coordination, record management, and internal communications — ensuring that Criterion's team can focus on delivering precision surgical instrument components without operational disruption. Bonnie's behind-the-scenes contributions are critical to the efficiency and professionalism that customers experience when working with Criterion. Her long-standing dedication to the company reflects the stable, loyal team culture that has helped Criterion maintain its reputation for reliability and consistency across more than seven decades of precision manufacturing in Brook Park, Ohio.
What is a CNC in the medical field?
In the medical field, CNC (Computer Numerical Control) refers to automated, computer-controlled machining processes used to manufacture precision components such as surgical instruments, implant parts, and diagnostic equipment components. CNC machining ensures highly consistent, repeatable geometries and tight tolerances — often to ± .0002" — which are essential for components where failure is not an option. Medical CNC machining is typically performed under certified quality management systems such as ISO 13485.
What metal are surgical instruments made of?
Is Criterion Precision Machining ISO 13485 certified?
What tolerances can Criterion achieve for surgical instrument components?
Can Criterion machine titanium and stainless steel for surgical applications?
Does Criterion offer surgical instrument prototyping?
What quality documentation does Criterion provide with surgical instrument orders?
What industries does Criterion Precision Machining serve?
Speak directly with our team for a consultation or to request a custom quote for your surgical instrument machining project.
Medical device quality management system certification for surgical component manufacturing.
International standard confirming consistent quality management across all machining operations.
Women's Business Enterprise National Council certification recognizing woman-owned business status.
Share your project requirements and one of our precision machining specialists will respond promptly with a tailored quote, capability overview, or consultation — no obligation required.
For immediate assistance, feel free to give us a direct call at 216-267-1733 You can also send us a quick email at office@criteriontool.com
For immediate assistance, feel free to give us a direct call at 216-267-1733 You can also send us a quick email at office@criteriontool.com