Lessons from a Recent Recall

Lessons from a Recent Recall

A recent Class I recall (not pictured) of a medical monitor with a hospital network connected central station stimulates some generalities about software, “fixes”, and connectivity. (Class I recalls are defined by the FDA as  a situation in which there is a reasonable probability that the use of, or exposure to, a violative product will cause serious adverse health consequences or death.)

The use of the product in question was given as:

  • a networked solution system used to monitor a patient’s vital signs and therapy, control alarms, review Web-based diagnostic images, and access patient records. The number of monitored vital signs can be increased or decreased based on the patient’s needs

Curiously only one customer was identified as having received the product, or at least this particular version of the product. While the manufacturer and product in question is a matter of public record, and available at the link, I chose not to include it here because my objective is not to repeat the recall information, but to suggest the reasons for the recall, an associated labeling issue, and offer some general lessons.

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The IOM on EHRs

The IOM on EHRs

The   issue of the EHR relative to safety and effectiveness has again made the news with the November 7, 2011 pre-publication (and downloadable) release of an Institute of Medicine report on EHR safety, commissioned by the U.S. Department of Health and Human Services (HHS). This report expands the discussion beyond the EHR (used henceforth for both EHR and EMR) to include other related electronic information tools collectively called health IT.

Health IT Risks

The potential for health IT to improve both the quality and efficiency of medical care has been much noted to include more complete and timely records, ready exchange of information between providers, clinical decision support, and in turn a reduction in errors associated with the quality and availability of patient information. Efficiencies may arise from electronic capture of data which would eliminate manual entry, and time savings in accessing and reviewing patient information, and perhaps in passing information to third party payers. Additional public health value might accrue from the enhanced searchability of electronic records with respects to trends, treatments and outcomes. These benefits assume well designed, user friendly, compatible systems not withstanding that the U.S. model is to allow for numerous independent products that may or may not be able to exchange information nor display it in a consistent manner. Not surprisingly the report notes that the IT imperative will likely not be fruitful without associated attention to the people and the clinical system they work in.

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Wi-Fi Capacity and New Devices

Wi-Fi Capacity and New Devices

A recent NY Times article reported that hotel Wi-Fi capacity was again being challenged, this time by iPads and other tablets, or more specifically, tablet users.  The Times notes that these users may have a smart phone and laptop going at the same time they are sucking up streaming video. The high bandwidth demand of these devices, or more specifically, their uses,  is said to be reducing download speeds back to the good old days of dial-up connections. A likely solution will be a tiered charge structure, similar to the newest cellular data plans, with the result that you can waste bandwidth if you don’t care what it costs.  A more general report on current and future wireless demand versus capacity has been produced by the Global Information Industry Center at the University of California San Diego. A less foreboding report on medical uses of Wi-Fi has been produced by the Wi-Fi alliance.

Smart phones have a prior history of  overwhelming cell phone networks, such that in dense environments someone can’t make a phone call because too many other people are watching reality show reruns and bad movies. Now some cellular devices have been looking at switching to Wi-Fi when it is available, as explained here. This leads to the conflict ridden situation of cellular wanting to use Wi-Fi to solve its capacity problems at the same time that Wi-Fi is being over loaded by other devices.   Cellular resistant building structures, which are increasing, also can create a desire to shift to Wi-Fi.

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Call for Contributing Authors

Call for Contributing Authors

Today I was contacted by a social media marketing firm working for a major MDDS vendor with an offer to contribute content that’s on topic for this site (that last part is important). I’m interested, and I imagine a lot of this blog’s readers will be too. As I will likely take them up on their offer, I want everyone to understand that there’s not any favoritism that plays into who gets to post on this site. So, the following describes the ground rules, the benefits of contributing, and issues an open invitation to contribute posts.

We’ve been fortunate to have a number of terrific contributing authors over the years, and some of them have written posts that continue to be popular to this day. On the About This Site page is a long standing open invitation to anyone who wants to climb up on the soap box and spout off contribute to the conversation about medical device connectivity. I’ve also made contributing author offers personally to many folks on both the provider and vendor sides of the table. There are so many people who have incredible knowledge and experience to share. And most of these people don’t have the time or inclination to create their own blog. Now you have an outlet.

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Hacked Insulin Pump

Hacked Insulin Pump

The fact that connectivity, and perhaps wireless connectivity in particular, allows for hacking for mischief, theft, politics, social protest and other forms and varying degrees of evil should surely come as no surprise. In turn, that a wireless medical device might be hackable should be somewhere on the mind of developers, users, and regulators. Thus the report from the recent Black Hat conference that someone hacked an insulin infusion pump, and in so doing was then able to alter its settings, should also not be particularly shocking, but should serve as yet another reminder, that security associated with connectivity has been and continues to be an issue, as was addressed by Tim back in 2006.

The report in this instance came from Jay Radcliffe who hacked his own insulin delivery equipment. In this instance the hacking avenue was the wireless remote that was part of the device. Perhaps the idea that a wireless remote could be emulated is even at the ultra low end of surprise.  More generally, the multiple discussions of this report (e.g. here and here) have suggested that the technology being used by at least some medical device manufacturers does not offer an adequate array of security safeguards. Or the manufacturers haven’t fully utilized what is available in terms of alternate hardware, or they havn’t fully utilized the security features that were available even in the hardware that they were using.

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