CHICAGO, IL -- (MARKET WIRE) -- April 03, 2007 -- Product Development Technologies (PDT), a global product design and development services firm and division of TZ Group (ASX: TZL), was engaged by the University of California Davis Health System (UCDHS) to develop a unique medical device which expands the esophagus using magnetic attraction. For most people, the simple act of swallowing is second nature. But swallowing is neither simple nor natural for millions of people suffering from a medical condition called dysphagia. Dysphagia -- the reduced ability to move food down the esophagus and into the stomach -- is a debilitating condition which, in acute cases, can be life threatening.
