World’s First Copper-Titanium Bone Pin Approved For Clinical Use

Recently, the world's first copper-containing titanium alloy bone pin, developed by the Institute of Metal Research, Chinese Academy of Sciences (IMR-CAS) in collaboration with Suzhou Senfeng Medical Technology, obtained the National Class III Medical Device Registration Certificate and was launched on the market. This achievement elevates China's medical metallic materials from bio-inert to bio-functional, offering a new solution for orthopedic anti-infection and reaching internationally leading technical levels.

Titanium alloys, for example Ti6Al4V, it features outstanding mechanical properties, corrosion resistance and biocompatibility. It makes them the mainstream material for orthopedic implants and bone pin devices. Traditional titanium alloys have no antibacterial capability. Pathogenic bacteria tend to form biofilms on their surfaces, causing intractable bone infections. The infections may lead to implant loosening, surgical failure and even life-threatening conditions.

Meanwhile, their poor osseointegration and slow healing, combined with antibiotic-dependent anti-infection strategies, can induce bacterial drug resistance and trap patients in a vicious cycle of infection-a long-standing thorny problem in orthopedic clinics.

Targeting clinical orthopedic challenges, the CAS research team has developed Ti6Al4V5Cu copper-containing titanium alloy after more than ten years of research. Integrating antibacterial, osteogenic-promoting and high-strength properties, it solves the problem of orthopedic implant infection at the material source.

1. Broad-spectrum Antibacterial Activity Against Drug-Resistant Bacteria

The copper-containing titanium alloy releases copper ions slowly and kills bacteria through three mechanisms. It achieves an antibacterial rate of over 99% against common orthopedic pathogens, is less likely to induce bacterial drug resistance, and can effectively prevent and treat drug-resistant bacterial infections.

2.Osseointegration and Enhancing Implant Stability

Copper ions activate osteoblasts and accelerate bone-implant fusion. The osseointegration efficiency of copper-containing titanium alloy is increased by 30%, enabling faster healing and lower loosening risk, suitable for patients with osteoporosis and complex fractures.

3. Mechanical Properties and Enhanced Safety

Adopting ultra-fine grain technology, Ti6Al4V5Cu has tensile strength far exceeding that of traditional titanium alloys, with synchronized improvements in hardness and fatigue resistance. It meets high-strength fixation requirements and avoids bone atrophy caused by stress shielding, delivering superior mechanical safety.

The approval of this bone pin sets a benchmark for industry-university-research-hospital collaborative innovation in China, establishing a complete industrial chain from basic research to mass production and application.

1.Breaking through key technologies for alloy design and preparation, mastering core processes such as uniform copper doping and ultra-fine grain control, owning more than 40 patents, and forming a full range of profile processing technologies.

2.Completing multi-center clinical trials in cooperation with multiple hospitals, and verifying the product's safety, strong antibacterial activity and excellent osteogenic effect through multiple rigorous tests.

3.The enterprise has built a standardized production line capable of large-scale supply, meeting domestic clinical needs and...

The approval of copper-containing titanium alloy bone pins brings three core values to orthopedic clinics:

• Shifting from "passive anti-infection" to "active antibacterial", significantly reducing postoperative infection rates, cutting antibiotic usage, and alleviating patients' financial burden and drug resistance risks.
• Synergistic antibacterial and osteogenic effects shorten the bone healing cycle, reduce the probability of secondary surgery, and improve patients' quality of life.
• Particularly suitable for high-infection-risk surgeries such as open fractures, infected fracture repair, spinal fixation and joint replacement revision, providing new treatment options for complex orthopedic cases.

The approval of copper-containing titanium alloy bone pins marks a milestone for China's orthopedic implant devices. As the world's first commercially available product of its kind, it signifies that China's medical metallic materials have evolved from following to leading internationally. In the future, this technology can be extended to bone plates, spinal fusion cages, dental implants and other categories to build a product matrix, enhance the international competitiveness of China's high-end medical devices, and provide high-quality Chinese medical solutions for patients worldwide.

Baoji Ruihang, a manufacturer of titanium and non-ferrous metal products, is specialized in R&D, production and sales. Our products are mainly applied in the medical field, aerospace, chemical industry, petrochemical engineering, automobile manufacturing, marine engineering and new energy industries.A pofessional service team is standing by for your inquiry. For more details, please do not hesitate to contact us by email: Sam.Rui@bjrh-titanium.com