Product Specification

Material Selection

Sharp-toothed shaver blades are available in standard materials such as 304, 316L, L605, and Ni-Ti, with custom sizes upon request. For enhanced performance, engineers recommend using 630 stainless steel (17-4PH) for the blade tips, which are heat treated to achieve a hardness of HRC 52-56. This hardening process ensures high durability and a superior surface finish, maintaining a sharp cutting edge. Most arthroscope shavers are made from austenitic stainless steel due to its excellent strength, toughness, and plasticity, which are crucial for effective performance in surgical applications.

Manners Technology guarantees that all materials used comply with rigorous standards and regulations. We provide Material Test Reports (MTRs), Certificates of Compliance (CoCs), and Traceability Documents to detail the chemical composition, mechanical properties, and heat treatment processes. These documents ensure adherence to relevant standards, including ASTM F899, ISO 7153-1, ISO 10993-1, and EN standards.

Custom Design

The Arthroscopy Sharp-toothed Shaver Blade offered by Manners Technology is a specialized tool for precise tissue resection in orthopedic surgery. It features a "tube within a tube" mechanism, consisting of an outer hollow sheath and an inner rotating cannula. The outer tube provides support and alignment for the inner tube and blade mechanism while allowing for the passage of suction or irrigation fluids.

The inner tube houses the sharp-toothed blade, which is responsible for the cutting action. It moves in and out of the outer tube, performing the shaving or cutting action. The blade’s teeth cut tissue as the inner tube rotates, with the tissue then being aspirated through the tube. The rotational speed of the inner tube typically ranges from 3,000 to 6,000 RPM, suitable for general debridement and standard arthroscopic procedures.

The blade features a series of sharp, tooth-like edges designed for effective tissue removal, with diameters ranging from 4 mm to 10 mm. Smaller diameters are used for delicate procedures, while larger diameters are suited for more aggressive debridement. Additionally, the blade may have a curved design, allowing it to conform to the contours of joints and anatomical structures. Common angles for curved blades range from 10 to 30 degrees, depending on the specific application and design requirements.

Sliding Headstock Lathe

The manufacturing process of the Arthroscopy Sharp-toothed Shaver Blade begins with heat treatment to harden the blade tip. Following this, a Sliding Headstock Lathe (Citizen L12-1M7) is utilized to hollow out the tip, ensuring smooth inner walls. This lathe precisely controls the dimensions and tolerances, enabling the creation of cylindrical or tapered hollow sections as required.

The Citizen L12-1M7 Sliding Headstock Lathe is renowned for its high precision, offering a positioning accuracy of ±0.005 mm (±5 microns) and a repeatability of ±0.002 mm (±2 microns).

Grinding

To manufacture the toothed edges of the Arthroscopy Sharp-toothed Shaver Blade, a grinding machine is employed to achieve precise shape, sharpness, and cutting characteristics. The process begins with securing the blade in the machine and using a coarse grinding wheel to shape it. A finer wheel refines the toothed profile and edges, with coolant applied to prevent overheating. Regular inspections ensure accuracy and sharpness, and polishing may be performed as needed. This method allows for the precise control of cutting depth, number of flutes, tooth profiles, and thread angles to meet specific customer requirements.

Laser Welding

Due to the different hardness levels of the tip and shaft materials, they are laser welded together after machining. Laser welding ensures precise control over the weld area and depth, producing high-quality joints with minimal thermal distortion. The concentrated heat reduces the heat-affected zone (HAZ), which minimizes warping and maintains the properties of the surrounding material. This method results in strong welds with minimal defects like porosity or cracks, and its precision and cleanliness often reduce the need for extensive post-weld cleanup or finishing.

Laser Cutting and Bending

For curved blades, Manners uses a 5-axis laser cutter to precisely cut the inner tube, while the outer tube is bent on a bending machine to join the two components. The 5-axis laser cutting process offers significant advantages over traditional 2D or 3D methods, including high precision and the ability to cut complex shapes and angles in one pass. This automation reduces manual handling and re-fixturing, speeding up production and reducing cycle times.

The 5-axis laser cutting machine ensures fine slots and superior edge quality, with slot widths ranging from 15μm to 30μm. It achieves high tolerances of ±0.01 mm (±10 microns) to ±0.001 mm (±1 micron), resulting in an extremely flexible inner tube that maintains a consistent rotational speed and minimizes impact on cutting performance, even in curved designs.

Electropolishing and Ultrasonic Cleaning

After the machining process, the Sharp-toothed Shaver Blade undergoes electrolytic polishing to enhance its surface finish and remove imperfections. This process helps achieve a smooth and uniform appearance. Following polishing, the blade undergoes ultrasonic cleaning to remove remaining contaminants and debris. This thorough cleaning process ensures the blade is free from any particles that could compromise its performance or pose a risk to patient safety.

Plastic Injection Molding

Once cleaned, the blade is then subjected to injection molding. Injection molding is a method to obtain molded products by injecting plastic materials molten by heat into a mold, and then cooling and solidifying them. The method is suitable for the mass production of products with complicated shapes, and takes a large part in the area of plastic processing.

If your item has a manufacturing defect in its materials or workmanship, you can return it at any time. We are here to help, please call us for any returns or questions at +86-755-23699351.