A pair of former users of Sprint Fidelis cardiac leads made by Medtronic Inc. (MDT) said Tuesday they are suing the medical device firm over injuries they claim to have sustained from the product.

The two are suing both for their own damages and as members of a class of all users of the leads.

The suit, filed in federal court in Minnesota, has plaintiffs Leonard Stavish and Kelly Liusi alleging the lead wire portion of the implanted heart defibrillators was defective and they "received jolting shocks when it falsely detected that the user needed a jolt from the device, or that the device failed, so that when they actually needed defibrillation they could not get it," according to their attorneys.

-William Spain; 415-439-6400