Custom Needle Design & Manufacturing

Hart approaches custom needle design and engineering as a true partnership from start to finish. Our team works with you to understand the entire system your needle will operate within—from function and materials to assembly and end-use performance. By defining the right combination of sharpness, flexibility, and flow, we help you create a design that aligns perfectly with both clinical requirements and manufacturing realities. The result is a solution that performs reliably, scales efficiently, and reflects the shared expertise of your team and our engineers.

Collaborative Engineering From Concept to Production

Hart’s engineering team works with you to define critical characteristics—such as sharpness, flexibility, and flow—and build a solution that achieves the right balance of strength, precision, and usability.

Precision Tolerances Applied With Purpose

Hart’s manufacturing capabilities deliver exacting tolerances for needles as fine as 32 gauge and as large as 4 gauge. Our process control allows for flexibility in design while maintaining consistent, repeatable results for production scale.

Advanced Coatings and Finishes for Enhanced Performance

Hart can craft everything from lubricious coatings that improve insertion to custom tip geometries that reduce trauma. Our in-house electropolishing and passivation and passivation ensure the highest surface quality and biocompatibility.

Design Collaboration That Accelerates Innovation

Our process begins with your goals. Whether you need a prototype to prove concept viability or a turnkey solution ready for FDA submission, Hart’s design team will guide you through every phase. By combining decades of experience with state-of-the-art machining and inspection technologies, we shorten your development cycle without compromising precision.
100% Engineered and Manufactured in the US
Founder-owned and operated since 1976
FDA Registered & ISO 13485 Certified

Our Core Custom Capabilities

Hart’s vertically integrated facility allows us to control quality at every stage. From design through sterilization, we manage the full lifecycle of your custom needle project to meet your exacting requirements.

Specialty Tips & Geometries

We design and grind tip geometries that optimize penetration, flow, and tissue interaction—whether your application requires a lancet, bevel, trocar, or custom multi-facet design. Our precision grinding ensures consistent sharpness and clean cuts every time.
Multipart Needles Hart

Multi-Part and Complex Assemblies

From multi-lumen cannulas to complex welded assemblies, our team engineers seamless integration between components. Our proprietary joining and forming techniques ensure tight tolerances and durable joints under pressure.
Markings on Needles

Coatings, Markings, and Identification

Hart offers a full range of enhancements including color coding, depth markings, and biocompatible coatings to improve safety and usability. We tailor each detail to fit your production and clinical needs.

Case Studies

Explore how Hart’s engineering expertise has helped medical device manufacturers overcome unique design and manufacturing challenges. Each case study highlights our problem-solving approach and the measurable impact for our partners.

How One Medical Device Program Became a Long-Term Manufacturing Partnership

For complex medical devices, there are frequently multiple opportunities for improvement. Materials, assembly methods, packaging, and production flow all contribute to the ultimate success or failure of a complex device. When one thing goes wrong, it affects everything else down the line.
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Optimization and Partnership for Reliable Endoscopic Needles

Hart partners with OEMs to design and build complete medical components and assemblies. Our integrated process combines engineering insight with full-scale production efficiency.
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Scalable, Flexible Approaches to Custom Ophthalmic Surgical Devices

We design and manufacture precision needles for specialized medical applications. Hart engineers to meet exact performance needs through collaboration, quality, and decades of expertise.
Read Case Study

Talk to Our Engineers

Our engineers are ready to collaborate with you on your next product. Whether you’re refining an existing design or developing a new device, Hart’s deep manufacturing experience ensures faster timelines, lower costs, and uncompromising quality.

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