Medical Shafts-Precision Spring

Why Choose US?

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Custom Solutions Tailored to your exact load, space, and environmental needs

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ISO 9001 Certified Rigorous quality control at every stage

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Rapid Prototyping Tested samples available in 5-7 days

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Global Supply Chain Reliable delivery across North America, Europe & Asia

Contact US

E-mail: sales@lihongsprings.com

Mobile: +86 176 6501 0974

WhatsApp: +86 150 1844 0213

FAX: +86 0769-8532 4238

Add: Room 101, Building 1, No. 446 Yanglang Road, Dalingshan, Dongguan, Guangdong, China

What is Medical Shafts？

Medical shafts are precision transmission/support components in surgical tools and devices, made from biocompatible alloys with 0.3-10mm diameter and ≤0.01mm/m straightness, used in minimally invasive instruments, imaging systems and implants.Stainless Steel Compression Springs

Key Advantages

Ultra Precision

Nano-polishing achieves Ra0.02μm surface with < 0.05 friction.

Biocompatibility

ASTM F136 titanium resists corrosion over 30 years.

Sterilization

Withstands 500+ cycles of 134℃ autoclaving.

Mechanical Design

Hollow structures reduce weight 40% maintaining stiffness.

MRI Safety

Non-magnetic materials ensure MRI compatibility.

How They Work

Transmits torque/thrust with precision, utilizing specialized coatings to minimize friction for accurate force/motion transfer in medical devices.

Key Characteristics

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Size Range - 0.3-10mm diameter, up to 2000mm length

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Straightness - High standard of ≤0.01mm/m

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Torque Capacity - Customizable 1-50N·m torque transmission

Key Design Factors

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Fatigue Life – Passes 2M+ bend cycle tests

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Coating Control – Diamond-like coating thickness ±0.5μm

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Sterilization – Materials certified to ISO 10993 standards

Manufacturing Process

Material Selection

Certified medical-grade alloy rods inspection.

Precision Turning

Swiss lathes achieve ±0.002mm diameter.

Laser Drilling

Creates 0.1mm micro-holes for hollow designs.

Heat Treatment

Vacuum annealing relieves stress.

Nano-polishing

Electropolishing for Ra0.02μm finish.

Functional Coating

PVD deposits 2-5μm antimicrobial layers.

Laser Marking

Permanent engraving of surgical parameters.

Clean Packaging

Class 100 cleanroom vacuum sealing.