A Medical Device Daily

AdvanSource Biomaterials (Wilmington, Massachusetts), a developer of advanced polymer materials for a broad range of medical devices, reported notification of the publication by the U.S. Patent and Trademark Office of the company's U.S. patent application related to antimicrobial polyurethane polymers.

The company is developing a drug-free, antimicrobial technology to eradicate MRSA clinical infections associated with medical devices. The company believes that infection rates from MRSA, primarily from hospitals and other medical facilities, pose significant risks to patient populations and are increasing in frequency.

The patent office is continuing its patent application review process, which typically takes 12 to 24 months to complete. Recent changes to U.S. patent law relating to the publication of applications may entitle the company to provisional rights in the form of reasonable royalties from the date of publication to the date the patent actually issues, it said.

The company's antimicrobial polymers exhibit the following properties:

The surface of components manufactured from its antimicrobial polymers are less susceptible to bacterial growth and biofilm formation, reducing the potential for foreign body patient infections, and

The antimicrobial agent is uniformly dispersed throughout the polymer, providing long-lasting activity.

SpectraScience (San Diego) reported that it has been awarded U.S. patent No. 7,469,160 for its methods and apparatus for evaluating image focus.

The invention provides methods of focusing an instrument for the acquisition of optical data from a tissue sample. It allows rapid focusing in a diagnostic procedure in which quick data acquisition is desirable. For example, the techniques allow a user to focus an optical instrument quickly enough to obtain data within an optimal window of time.

In one version, a user focuses an optical instrument by aligning laser spots projected onto a tissue sample within rings that are superimposed at predetermined locations within the user's visual field. The invention further allows automatic validation to detect whether the spots are sufficiently well-aligned.

SpectraScience develops spectrophotometry systems capable of determining whether tissue is normal, pre-cancerous or cancerous without physically removing tissue from the body.