Biomedical-Grade Helical Compression Spring for Surgical Instruments with Precision Force Control and Sterility Assurance
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
Negotiable
Brand:
Sunzo
Product Description
Helical Compression Spring for Medical Surgical Instruments
Engineered specifically for medical surgical instruments, our helical compression springs deliver biomedical-grade precision and sterility assurance for life-critical applications. These springs provide consistent performance in instruments such as laparoscopic graspers, endoscopic tools, and surgical staplers, ensuring micron-level force control (±0.05N) and repeatable actuation essential for delicate tissue manipulation and precise mechanical feedback.
Medical-Grade Materials
316LVM Stainless Steel (ASTM F138)
Polished to Ra < 0.2μm surface finish to prevent bacterial adhesion, withstands 2000+ autoclave cycles (134°C, 30 minutes) without degradation
Titanium Alloy (Ti-6Al-4V ELI, ASTM F136)
40% weight reduction over steel with equivalent strength, excellent corrosion resistance in bodily fluids
Nitinol (NiTi-55)
Shape memory applications, maintains functional integrity across -40°C to 121°C sterilization ranges
Precision Design Specifications
| Parameter | Specification Range |
|---|---|
| Wire Diameter | 0.1mm to 2.0mm |
| Coil Outer Diameter | As small as 1.5mm |
| Working Stroke | 0.3mm to 10mm |
| Force Linearity | Maintained within ±2% across deflection range |
Advanced Manufacturing Process
- Cleanroom production (ISO 8 Class 100,000) with automated processes to eliminate human contact
- Laser welding with 0.01mm precision for end loops, ensuring no micro-cracks or burrs
- Electropolishing to remove surface impurities and create passive oxide layer (Cr₂O₃)
- Automated optical inspection (AOI) with 5μm resolution to detect sub-micron defects
Quality & Performance Validation
- ISO 10993-5 biocompatibility testing (cytotoxicity, sensitization, irritation)
- ISO 13485 quality management system certification
- FDA 510(k) premarket notification support for instrument integration
- Fatigue life testing exceeding 10⁶ cycles at 70% rated load (per ISO 13920 Class 0)
Proven Field Performance: Leading surgical device manufacturers report 92% reduction in instrument failure rates, 0.02mm positional accuracy in micro-dissection procedures, and 100% pass rate in 5000-cycle sterilization testing.
Custom Solutions Available
We offer specialized designs including variable-rate springs for tactile feedback, ultra-fine wire springs for micro-surgery, and anti-migration designs for implantable devices. All springs include full traceability documentation with batch material certificates, process records, and sterility validation reports.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Jiangsu Sunzo Spring Elasticity Technology Co., Ltd
Location
No.20, Xinghuo Road, Nanjing High-tech Development Zone
Contact Person
wendy