Official Announcement of Results:

Manas Technology proudly presents our milestone process in the surface treatment of stainless steel lumen walls for single-use puncture devices-an integrated, end-to-end precision finishing technology combining precision CNC machining, electropolishing, and ultrasonic cleaning. This technology achieves an exceptionally low surface roughness (Ra value) on the inner lumen walls, delivering a micro-level "mirror-like" finish. It effectively reduces instrument friction resistance, biofilm residue, and tissue adhesion, ensuring each device passage is as smooth as silk. This reflects our deep understanding of "tissue-friendliness."

R&D Background Pain Points:

The sleeve of a trocar serves as the passage through which instruments repeatedly enter and exit. In traditional manufacturing, after cutting and drilling stainless steel tubes, microscopic burrs, tool marks, and even fine metal particles may remain on the inner wall. These rough surfaces create multiple issues: first, they increase friction when instruments such as graspers or scissors pass through, affecting tactile feedback during surgery and potentially wearing down instrument seals; second, during procedures, they act as "harbors" where blood and tissue debris can accumulate, making thorough cleaning difficult-even after sterilization-and thereby increasing the risk of biological contamination and cross-infection; third, rough edges may scratch delicate seals, leading to insufflation leakage. The market demands a solution capable of achieving an exceptionally smooth and clean inner surface.

Core Technology Innovation:

We have developed a closed-loop process that integrates machining with finishing. At its core is the precision machining performed by the Japanese Tsushima Citizen Cincom L12-1M7 sliding head lathe, which simultaneously drills side holes and performs in-line deburring, eliminating contamination and errors caused by secondary clamping at the source. This ensures smooth transitions at hole edges and controls burr size within 0.01 inches (approximately 0.254 millimeters). Next, we apply medical-grade electrolytic polishing-a process that goes beyond simple plating. Utilizing electrochemical principles, it selectively dissolves microscopic protrusions on the tube wall, resulting in a more uniform surface crystalline structure. This not only achieves mirror-like gloss but also forms a chromium-rich passive film on the surface, significantly enhancing corrosion resistance. Finally, 40kHz ultrasonic cleaning leverages cavitation effects to generate tiny explosive forces that penetrate even the finest crevices, thoroughly removing any residual particles or oil stains from previous processes.

Mechanism of Action:

The mechanism of this combined process relies on the synergistic effects of "physical planarization" and "chemical passivation." The initial "precision machining plus in-line deburring" optimizes both macroscopic and microscopic geometries, eliminating physical sharp points. Subsequent "electropolishing" operates at the nanoscale, smoothing out crystal-level irregularities, reducing surface energy, and making it difficult for contaminants to adhere. The resulting passivation film acts like an inert "armor," resisting erosion from bodily fluids. Finally, "ultrasonic cleaning" provides ultimate assurance by leveraging fluid dynamics to achieve contactless, thorough cleaning without blind spots. Together, these three steps create a nearly "perfect" internal fluid channel surface that is low-friction, anti-adhesive, and easy to clean.

Efficacy Verification:

Third-party testing shows that the surface roughness (Ra) of our tube lumens is significantly lower than the industry average. In simulated surgical friction tests, instrument passage resistance decreased by approximately 30%, and the durability test cycle for seals was extended by 50%. Microbial retention experiments indicate that after standard cleaning procedures, the residual bioburden on our treated lumens is one order of magnitude lower than that of conventional products. Clinical feedback confirms more stable pneumoperitoneum maintenance during surgery and smoother instrument handling, with advantages particularly evident in complex procedures requiring rapid instrument changes.

R&D Strategy and Philosophy:

We believe: "The interaction between devices and the body should be seamless and safe." Our R&D strategy extends the concept of "user experience" beyond surgeons to encompass the patient's internal environment and the device itself. We focus on the unseen details-the smoothness of inner walls. This matters not only for ease of use, but more profoundly for surgical safety (reducing infection, preventing leakage) and device reliability. We invest in high-precision equipment and additional manufacturing steps to eliminate even microscopic roughness that could lead to macroscopic risks.

Future Outlook:

We will continue to deepen our research into surface functional modification. Current studies include integrating hydrophilic coatings on the inner walls through specialized processes to achieve "self-lubrication upon contact with liquid," thereby further reducing friction; or exploring surface treatment technologies that incorporate antibacterial ions, adding an active antimicrobial layer beyond physical cleaning. Our goal is to transform trocar sleeves from passive conduits into intelligent interfaces capable of actively improving the local microenvironment, laying the foundation for future infection-free surgical instruments.