Biomedical Surfaces  2013

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Reduced wear & infection
A new coating developed by Tecvac including silver and chromium nitride has the potential to reduce both wear and joint infection in total hip replacement therapy.
See poster from Queen Mary College, University of London
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COATINGS COMMUNITY
Tecvac's medical coatings use 'biologically inert' ultra hard materials,  such as titanium nitride, and other  bio-compatibles and anti-microbials  such as pure gold, silver and  copper,  to coat implants, medical instruments, probes and accessories. These coatings reduce  friction and wear, extend device lifetimes and achieve  high levels of biocompatibility with excellent anti-microbial properties.

PVD coatings &  thin films, for orthopaedics and cardiology
Tecvac's Physical Vapour Deposition (PVD) processes allow metals and organic compounds, to be applied to metal, ceramic and polymeric substrates. Molecular  scale changes can be made to plastics and other materials using low temperature plasma techniques. These services and technologies support medical applications in orthopaedics, cardiology and other medical sectors including knee, hip, other orthopaedic and cardiac implants and  medical equipment.

Plasma modification  of plastics
Tecvac has recently developed a set of new, low temperature plasma processing technologies that allow plastic surfaces to be sterilised, coated or modified to the highest clinical standards to ensure biocompatible solutions. 

Analytical and metallurgical services
Tecvac offers a full range of metallurgical and analytical services, supported by the latest heat treatment techniques with controlled environments and advanced cleaning systems to ensure that any implants, probes or core materials used for components or instruments can be coated to the best performance standards. 

Substantial clinical history
Tecvac's coating skills have been applied to stents, catheters, laryngeal implants, surgical instruments, pumps, valves and other body  fluid management devices, optical  & dental devices. These coatings improve performance, aid surgeons  and reduce trauma in operations and contribute to better patient outcomes by extending implant life and minimising infection rates.  Tecvac's  flexible, low friction titanium nitride coatings replicate the smoothest mirror finish and  have been specified in knee, hip  and other  articulation surfaces within orthopaedic applications for very long periods, with complete clinical histories.


Project BERTI; (Biomedical implant with Exceptional Resistance to Tribo-bio-corrosion and with Inherent antimicrobial properties) is expected to lead to new designs of  knee and hip implants and  substantially reduce the number of costly revision surgeries for hip and knee replacement patients. Partners in the project include Corin Plc, Tecvac Ltd, Imperial College, University of London, Charing Cross Hospitals, Queen Mary College, University of London and the University of Sheffield.
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£500,000 EPSRC project at the University of Sheffield

Tecvac Ltd has designed and built a unique, world class surface engineering research machine for The University of Sheffield as part of a £500,000 EPSRC project.

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SMART-HIP, a research project led by Cambridge coating specialist Tecvac Ltd and leading UK hip prosthesis manufacturer, Corin Ltd, has demonstrated the potential of new enhanced wear resistant coatings to increase implant longevity in Metal-on-Metal (MoM) hip prostheses and future potential applications to trunnions and tapers to prevent fretting and corrosion.

New PVD silver bearing coatings were developed which may protect against post-operative infection, and also provide a barrier to minimise metal ion release. Optimised coatings reduced the release of one important metal ion (Cobalt), implicated in chronic tissue inflammation, by 99%.

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