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Metals Used for Manufacturing of Orthopedic Implants

Orthopedic Implants

Our company uses high- quality materials like stainless steel, pure titanium, and titanium alloys to manufacture our products.

STAINLESS STEEL

Our company uses high- quality materials like stainless steel to manufacture our products.

Stainless steel orthopedic implants manufacturer Siora Surgical Private Limited produced the implant-quality 316L stainless steel, in which suffix L denotes a low carbon content to ensure that the material will be free from susceptibility to intergranular corrosion.

Certain implants, such as cerclage wire or pelvic-reconstruction plates, are produced from implant-quality 316L stainless steel in the annealed, or softest, condition. This is needed for applications which demand maximum contour ability. The majority of 316L stainless steel implants are produced from cold-worked or strengthened, material. Some small-diameter implants such as Kirschner wires, Steinmann pins, and Schanz screws may be highly cold-worked to resist permanent bending deformation.

Blade Plate Instruments

The surface treatment is known as electropolishing is used for stainless steel implants. Electropolishing consists of applying an electric current to an implant immersed in a specially formulated chemical solution under specified time and voltage. This treatment decreases the surface roughness of the implant and provides a good combination of low surface friction and excellent corrosion resistance. For certain applications, some implants may be shot- peened before electropolishing. The implant surface is subjected to high-velocity impaction by metallic particles under well-defined conditions. Shot-peening produces a roughened surface with increased residual compressive stress for enhanced fatigue life.

PURE TITANIUM

Implants made from commercially pure titanium have been successfully used in clinical practice since 1996. Pure titanium does not contain major alloying elements, and the metal has a documented history of outstanding biocompatibility. Clinical experience demonstrates that tissue adjacent to pure titanium implants is well vascularized with less tendency toward capsule formation. These biologically favorable conditions may help to reduce the spread of bacteria and increase the resistance to infection.

ISO 5832-2:2018 specifies the characteristics of, and corresponding test methods for, unalloyed titanium for use in the manufacture of surgical implants.

Pure titanium is produced by advanced processing methods that significantly increase the strength of the material. Various combinations of strength and ductility are provided to meet the demands of each specific implant application.

All pure titanium implants have a special anodized surface finish that increases the thickness of the protective oxide film. The titanium implants are immersed in a chemical solution and a known electrical voltage is applied for a specified time. The specific colour produced depends on the oxide film’s thickness. This is controlled in the anodizing process. Visible light diffraction within the oxide film creates a distinct colour.

No pigments or organic coloring agents are present in the anodized titanium oxide film. The titanium anodizing process is capable of producing a variety of colours, depending on the thickness of the oxide film.

Improve biocompatibility, proven functional performance, and excellent corrosion resistance are important advantages of pure titanium implants. Additional clinical benefits include the absence of allergic reactions to metal and the option to leave the implant in situ.

TITANIUM ALLOYS

Titanium Alloy Ti-6Al-4V is being used for implants due to its higher strength capability then Pure Titanium combined with excellent biocompatibility and corrosion resistance.

ISO 5832-3:2016 specifies the characteristics of the wrought titanium alloy known as titanium 6-aluminium 4-vanadium alloy (Ti 6-AI4-V alloy) for use in the manufacture of surgical implants. The corresponding Standard being ASTMF 136 in USA.

New biocompatible titanium alloys such as Ti-6Al-7Nb and other advanced compositions are being evaluated for future implant applications. These titanium alloys offer outstanding corrosion resistance, Excellent biocompatibility, and higher strength capability than pure titanium. Titanium alloy implants may be ceramic shot- peened, and either chemically passivated in nitric acid or anodized as a final surface treatment. Siora Surgical Pvt Ltd has Indonesian language website for ortho implants www.siiora.co.id.

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