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POWER SUPPLY


Hospital turns to fl ywheels for MRI back-up power


Even though 80 percent of all utility power anomalies/dis- turbances last less than two seconds, and 98 percent last less than 10 seconds*, the results can be dramatic for healthcare facilities. After the MRI suite at Texas Scottish Rite Hospital for Children (TSRHC) completely shut down twice due to power problems, the leading orthopedic center in Dallas in- stalled a pair of VYCON fl ywheels to avoid similar situations in the future. Interruptions in the radiology unit can be especially prob- lematic for patients when under anesthesia, since they may have to be awakened and rescheduled if a power issue cannot be resolved quickly. Power brownouts, surges and outages can also be devastating to CT and MRI equipment. The 300-kW VYCON VDC-XE flywheels provide a


smooth, reliable and green energy storage alternative to unin- terruptible power supply (UPS) systems that use hazardous- material lead-acid batteries, which degrade every time they are cycled, take up real estate and can require expensive cooling. T e fl ywheel works like a dynamic mechanical battery


that stores energy kinetically by spinning a mass around an axis. Electrical input spins the fl ywheel rotor up to speed, and a standby charge keeps it spinning 24/7 until called upon to release the stored energy. For math buff s, the amount of energy available and its duration is proportional to its mass and the square of its revolution speed. For fl ywheels, doubling mass doubles energy capacity, but doubling rotational speed quadruples energy capacity. T at means that a lot of power can be packed into a relatively small space. During a power event, the fl ywheel can supply back-up power seamlessly and instantaneously, providing energy to the connected load exactly as it would do with a battery string.


Confi guration Vertical for optimum effi ciency


Magnetic Bearing Fully active 5-axis


Rotor Integral with hub


MOBILE TECH CASE STUDY


Android tablets tackle home-care challenges in California


Seven-inch, consumer-based Android tablets with 4G mobile connections are becoming regular tools of the trade for 1,300 workers at Sutter Care at Home, an affi liate of Sutter Health, a Sacramento, CA-based not-for-profi t healthcare organiza- tion. T e home-care and hospice agency transitioned to using tablet technology in 2012 after attempt- ing to implement systems that used laptops at one point and, later, smart- phones. Besides providing


Frank Carter, Sutter Care at Home’s lead Technical Analyst for mobile devices.


Internet and email capabilities, the tab- lets, which come in four diff erent mod- els, use a mobile version of the Epic Systems EHR that Sutter Health uses,


providing read-only data from prior hospitalizations, offi ce visits and lab results. Workfl ow has improved signifi cantly in many areas. One


key development: Documentation completion now takes 24 hours instead of the 72 hours before the use of tablets. T e tablets also help improve wound care (because home-


Stator Dual-mode Motor/Generator Hub


Aerospace high- performance steel


Housing Vacuum environment


VYCON fl ywheel components.


“By incorporating fl ywheels as the energy storage part of the UPS, the hospital has saved time and money,” says TSRHC’s Engineering Department Director John Coté, “but more im- portantly, it is delivering predictable operation to our imaging suite for our special little patients.” Source: VYCON * Electric Power Research Institute (EPRI)


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care nurses are able to use a tablet’s built-in camera to take pictures of wounds and send the photos securely to the offi ce for inclusion in the patient’s EHR) and make the direct order- ing of medical supplies a snap by using standardized formulary and on-the-spot Internet access. But device management provides its own set of challenges. “When you deploy Epic in a hospital, you have all those super-users running around with diff erent-colored vests an- swering questions,” says Philip Chuang, Sutter Care at Home’s Chief Strategy Offi cer and former Director of Information Services. “In home care, you can’t do that. Not only do we have to buy the devices, but we have to fi gure out how to supply all this remote support. If you go with a mobile solution as the core computing platform, this is really important.” “With tablets, it’s a consumer device,” adds Frank Carter,


Sutter’s lead Technical Analyst for mobile devices. “T ey’re not thinking about managing 1,000 devices, like we are.” T ere are many sources for potential change, says Carter, when the device is made by Samsung, the operating system comes from Google and 4G service is provided by Verizon, Sprint or AT&T. On the plus side, the IT department is able to exert a greater level of control over the tablets than it would with laptops. Read the full CHIME case study at www.cio-chime.org. Source: CHIME


HEALTH MANAGEMENT TECHNOLOGY June 2014 7


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