Archive for August, 2010

Vocera Use Model in RF Challenging Healthcare Environments

Tuesday, August 24th, 2010 by David Hoglund

It has come to my attention this week that a major IDN seems to be having difficulty having a great experience with Vocera badges on Cisco infrastructure. www.vocera.com

VOCERA

While certainly I believe Cisco knows their stuff; the fact is that healthcare is a very, very challenging multi-path environment.  You add to the user model of the Vocera badge/or device often worn around the chest, then you have a perfect environment for the 2.4GHz signal to be attenuated by the water in the person’s body. Not unlink a telemetry transmitter.  You add then the small micro-strip antenna, it may work well in an open environment, but challenges remain for the demanding environment of healthcare. Perhap’s Ruckus offers some real technical advantages to make this application work better. www.ruckuswireless.com

BeamFlex consists of a smart, compact antenna array with multiple elements, which can be combined in real time to form unique antenna patterns. The advanced BeamFlex system software continually learns the environment with all its hostilities and interference sources, including disruptive RF conditions, numerous communicating devices, network performance issues, and application flows. Then, it selects the optimum antenna pattern for each communicating device in real time, while actively avoiding interference and minimizing noise to nearby networks and devices.

Beamflex provides

  • Over 3X increase in performance and range
  • 8X expanded coverage
  • Stabilized wireless network performance, for picture-perfect video streaming and crystal-clear voice communications
  • Maximized power efficiency
  • Interference mitigation

Unlike omni-directional antennas that radiate signals in all directions, BeamFlex directs transmit energy towards the best path to the receiving device. And unlike fixed-positioned directional antennas, BeamFlex dynamically configures its “beam” on a per-station, per-packet basis, to achieve omni-directional coverage.

BEAM

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Real Time Spectrum Analysis Lowers Risk for WLAN Enabled Medical devices

Sunday, August 22nd, 2010 by David Hoglund

Part of reason WMTS (Wireless Medical Telemetry Service) is somewhat considered legacy, is that there is no way to actually real time validate sources of interference. RF is RF, and even licensed spectrum is susceptible to interference. WMTS simply can not take advantage of enterprise tools. Perhaps real time spectrum analysis of healthcare WLANS should be considered “best of practices”, i.e. risk management for pending IEC 800001?  Input on this?

ARUBA

Download TB_Spectrum-Analyzer

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The I-Pad and the Healthcare Vertical

Friday, August 13th, 2010 by David Hoglund

I have to admit, I am going out today and buying one. This device has finally crossed the chasm and I think Apple may have a real shot at making a mobile computing platform for healthcare “finally” take off. Several things that really stand out about this platform make it really appealing.  As said always it is about the user interface, (hello the I-Phone), the brillance of the disply, the touch resistent of fingerprints, make this something that users will big time embrace.  How many physicians have an I-Phone that they purchase themselves, versus a corporate Blackberry! The amount of flash memory is sufficient when you run CITRIX. The thin and light nature of the device mean clinicians will take this around with them, versus trying to lug heavy tablet computers of before.  The battery life while not 12 hours, and not a hot swap battery, some perceive is a negative, but I do not. Dealing with batteries is a pain. Most folks will just leave it in a charger. Finally, you cannot ignore all the developers with thousands and thousand of applications. This will drive down the costs of healthcare for software development. I think it would be an amazing experience as a patient to be given a I-Pad to fill out their initial encounter at a clinic, hospital, or physicians office, versus a piece of paper, pen, and clipboard. Oh yes, since you can run CITRIX as said and  helps overcome all the issues with HIPPA.

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www.apple.com

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Considerations for Assurance of Safe, Effective, Secure Wireless Healthcare

Monday, August 9th, 2010 by David Hoglund

Here is an interesting manuscript submitted by Donnald Witters and Charles Ho of the FDA. (January 29, 2010).

It is focused on these key areas, quality of service (QoS), data integrity, (e.g., data throughput, latency, corruption), co-existence with other wireless equipment, security, and electromagnetic compatibility (EMC).

Don and Charles are doing a good job at establishing the best of practices.

As a side they reference (3), Hoglund, David H., Wireless and Broadband Management for Integrated Healthcare Network, IT Horizons 2008, pgs 39-45

Download Witters%20Abstract%2053

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