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Anti-microbial catheter to cut infection risk for dialysis patients
Date:3/24/2009

said: "The reviewers for the journal described what we have done as a remarkable achievement. This study has not only demonstrated the potential of what this catheter can do but has established the need for rigorous and clinically-focussed laboratory evaluation of such new devices.

"The lab-based studies have already shown such robust results that the likelihood of the catheter demonstrating satisfactory clinical performance is extremely high."

The data will also be useful for companies investigating the potential investment opportunities for the knowledge transfer of the technology.

The technology behind the catheter is a patented process whereby anti-microbial agents are inserted into the device post-manufacture so they become a molecular part of the catheter. The silicone material of the catheter is a polymer, a network formed from molecules that have tiny spaces in between them. The device is soaked in a bath of chemicals, such as chloroform, and the anti-microbial agents which causes the silicone to swell to twice its normal size, making these gaps between molecules bigger. The chloroform is then removed and the device shrinks back to its normal size encasing the anti-microbial agents inside but allowing them to move through the silicone and kill any pathogens coming into contact with the surface of the catheter.

It follows on from work at Nottingham by Dr Bayston to develop a catheter for neurosurgery and to treat brain conditions such as hydrocephalus. This catheter is now being used by around 110,000 patients around the world and has reduced their risk of infection by between 70 and 90 per cent.

The researchers also now hope to adapt it for use in central venous catheters which are used to deliver cancer drugs and nutrition, and urinary catheters, which are commonly used in the healthcare of the elderly and to manage urinary tract problems in people with spinal injuries and spina bifida. This will involve some a
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Contact: Dr Roger Bayston
roger.bayston@nottingham.ac.uk
44-115-823-1115
University of Nottingham
Source:Eurekalert

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