A puncture needle may look simple, yet its production relies on a sophisticated industrial chain integrating precision machining, micron-level surface treatment and sterility assurance technologies. The manufacturing workflow of Manners Technology fully demonstrates how to convert raw materials into reliable medical-grade devices.

Step 1: Material Science and Precision Forming

Production starts with rigorous raw material screening. Manners Technology adopts 304 or 316L medical-grade stainless steel complying with ASTM/AISI standards to guarantee superior biocompatibility and corrosion resistance. Nickel-titanium (NiTi) alloy is available for applications requiring exceptional flexibility.

Raw materials are fed into the production line in the form of coiled tubing or straight bars, then processed on Swiss-type lathes for high-precision turning. Complex features including outer diameter, inner diameter and tapered transitions of the needle cannula are completed in a single pass, with tolerance controlled within ±0.01 mm, laying a solid dimensional foundation for subsequent procedures.

Step 2: Needle Tip Forming - The Craft of Achieving Optimal Sharpness

The needle tip defines the performance of a puncture needle. Its fabrication is a systematic process rather than mere sharpening:

Rough and finish grinding: High-precision CNC grinders equipped with diamond or CBN grinding wheels are used to machine customized bevels in accordance with programmed parameters. Strict control is implemented over bevel angle, symmetry and cutting edge straightness.

• Back-cutting and side hole machining: For biopsy needles, sampling notches or side holes are fabricated near the tip. Manners Technology employs 5-axis laser cutting for this process. Compared with conventional mechanical machining, laser cutting creates a minimal heat-affected zone and delivers burr-free, smoothly finished openings. This allows tissue samples to enter the lumen freely without crush damage.
• Deburring and polishing: Micro burrs may remain on edges of the tip and side holes after mechanical processing. Magnetic polishing, flow polishing or electropolishing is applied to remove burrs, resulting in smooth, sharp cutting edges and minimizing tissue laceration.

Step 3: Surface Finishing - Smoothness Equals Safety

A rough needle surface increases tissue friction and patient discomfort. Manners Technology applies electropolishing as its core surface treatment technology. As an electrochemical process, it selectively dissolves microscopic protrusions on the metal surface to achieve a near-mirror finish with drastically reduced surface roughness (Ra). The treatment not only facilitates smoother puncture, but also eliminates surface contaminants and metal particles while further enhancing corrosion resistance.

Step 4: Thorough Cleaning and Rigorous Quality Control

All procedures are carried out in a cleanroom environment. Puncture needles undergo multiple rounds of ultrasonic cleaning to remove residual grease, metal chips and particulate matter.

Every finished needle then undergoes full inspection, including optical dimensional measurement, needle sharpness test (penetration force test), patency test and visual examination under magnifiers to verify full compliance with specifications. The entire production process adheres to ISO 9001:2015 and ISO 13485:2016, enabling full traceability.

Step 5: Packaging and Sterilization - The Final Safety Barrier

Qualified products are packaged as required by customers, with options including blister packs, Tyvek pouches and custom packaging. Finally, products are sterilized via ethylene oxide (EO) or gamma ray irradiation to achieve a sterile state before delivery to clinical settings.

Conclusion

Manners Technology's manufacturing philosophy lies in achieving maximum controllability across every production stage. From raw material incoming to sterile delivery, every link in this precision manufacturing chain upholds a core commitment: to provide clinicians with dependable tools that deliver precise performance as intended.