• Bionic willow leaf blade tip design enables smooth and efficient single-layer cutting

• Precision sandblasting on the tail enhances operational stability and connection reliability

• High dimensional accuracy of the tube body ensures instrument compatibility and smooth delivery

FAQs:

Q: How exactly does the sandblasted treatment on the tail enhance operational performance? Will it affect subsequent welding or coating processes?

A: The tail sandblasting forms a uniform matte rough surface through micro-particle physical bombardment. Its core function is to increase the coefficient of friction, effectively preventing the needle shaft from slipping at the handle interface during rotation, twisting, or connection to external instruments (e.g., syringes, catheters), ensuring effective torque transmission and operational precision. Regarding subsequent processes, our sandblasting process strictly controls the depth and roughness (typically between Ra 0.4-1.6). This microscopic rough surface not only does not hinder the energy focus of precision welding (e.g., laser welding) but actually provides better mechanical interlocking for the weld points. It also does not affect the adhesion of subsequent hydrophilic coatings, as the coating process is specifically designed to treat such surfaces.

Q: How do the overall straightness and surface roughness of the needle tube affect clinical use? How do you ensure these indicators?

A: Straightness directly determines whether the needle shaft will deflect or touch the wall when penetrating deep into a lumen; high straightness means a more stable guiding path and higher pass-through rate. Surface roughness affects fluid flow (low residual) and biocompatibility (smooth surfaces reduce cell adhesion or protein deposition). We ensure extremely high straightness standards (typically controlled within 0.1mm/m) through precision cold drawing combined with multi-stage in-line annealing. For surface treatment, electrolytic polishing technology​ is used to achieve ultra-low Ra values (typically <0.2μm)​ for both inner and outer walls, ensuring smooth fluid delivery and cleanliness within the lumen.

Q: After sterilization treatments (such as autoclaving), will the sharpness of the tip and the connection strength of the tail be affected?

A: Our material selection and processing techniques fully consider the tolerance to high-temperature and high-pressure sterilization. The hard alloy or high-strength stainless steel​ used for the tip will not curl or dull after undergoing standard autoclaving (e.g., 134°C, 30 minutes). The sandblasted layer on the tail has excellent physical adhesion and high-temperature resistance, preventing reduced adhesion due to thermal expansion and contraction. Furthermore, we conduct post-sterilization performance sampling inspections on each batch​ before shipment to ensure sharpness remains above 95% of the original standard and tail connection strength meets safety thresholds.