Cadalyst - March 2008 - (Page 12)

techtrends Thicker than Water Luminous Medical uses COSMOSFloWorks computational fluid dynamics software to analyze how blood flows. By Kenneth Wong nurse comes in, pokes the patient’s finger with a handheld device, reads the chemical content of the patient’s blood, then records it.” For patients who must avoid hypoglycemia, or low blood glucose, the process has to be repeated as frequently as every 30 to 60 minutes (“The Glycemic Control in the Critically Ill and Injured Patient: Progress and Problems,” Webcast, November 2, 2006, Society of CritiFigure 1. The Luminous Medical Glucose Measurement cal Care Medicine, System incorporates an accessory device pole (where the www.sccm.org). By consaline bag is hanging from the catheter) from which infutrast, Luminous’ device sion pumps are mounted. The company points out that this is attached to a cathdesign minimizes the device’s floor-space requirements. eter, the standard ICU accessory for automatically monitoring a patient’s vital signs the most part, so [measuring glucose and delivering drugs and regular insufrom the catheter] doesn’t present lin doses (figure 1). additional discomfort. On the other “Our device draws a small amount hand, if the nurse comes in with of blood through the infusion tube a handheld device, they can’t help attached to the catheter,” Novkov but think, ‘I’m getting my finger said. “When it reaches the device, stuck again.’” it flows into the flow cell. The device then shines infrared light through The Non-Newtonian that flow cell to determine the Discovery glucose volume in the blood.” Twelve years ago, Novkov began In its online literature, Luminous using SolidWorks for his CAD work points out that “the net result is a when he worked at Inventive Techsystem that accurately and precisely nologies, a respiratory-device maker reports patient glucose readings withlater acquired by Respironic (itself now out the need for frequent calibration pending acquisition by Phillips Elecand allows for automated, frequent tronics). At Luminous Medical, he and measurements.” his colleagues used the same software “The patients in the ICU don’t to design the 400-part assembly that really notice the catheter,” Novkov comprises the new glucose-measuring said. “They’re hooked up to one for system (figure 2, p. 14). I n the field of fluid dynamics, blood falls under the non-Newtonian category because its behavior defies the classic Newtonian principle that governs water’s movement. In other words, with blood, the rate of shear is not proportional to the corresponding stress (McGraw-Hill Dictionary of Scientific and Technical Terms, McGraw-Hill Companies, 2003). It was up to Don Novkov, Luminous Medical’s senior mechanical engineer, to figure out how blood behaves when it trickles into an automated glucose-measurement device, the premier product from Luminous. A veteran SolidWorks user, Novkov found that COSMOSFloWorks, a computational fluid dynamics (CFD) analysis program for SolidWorks users, had precisely what he needed to deconstruct the non-Newtonian flow. The Inconspicuous Poke Currently still in development, Luminous’ glucose-measurement system is intended for hospital patients in intensive care, intermediate care, and operating rooms. “A device like this has never been on the market before, so we’re hoping to be the first,” Novkov revealed. Luminous was founded specifically to create the product. “The common method used today is the finger-sticking method,” Novkov added. “As you might gather from the name, this requires that a In this article Luminous Medical www.luminousmedical.com SolidWorks www.solidworks.com 12 March 2008 | cadalyst | www.cadalyst.com http://www.sccm.org http://www.luminousmedical.com http://www.solidworks.com http://www.cadalyst.com

Table of Contents Feed for the Digital Edition of Cadalyst - March 2008

Cadalyst - March 2008 Contents Editor's Window CAD Central Thicker than Water Safe Keeping — Backup Software Secures Your Designs AMD’s ATI FireGL Graphics Cards AutoCAD Civil 3D 2008 — Surveying, Civil Engineering, and Land Development Software Cool Software Utilities for Your Job History, Nonhistory, or Both? In the Eye of the Storm Builders’ Information Modeling CAD Cartoon Issue Indexes CAD from the Streets

Cadalyst - March 2008

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