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Connected sensor substrate for blister packs

  • US 10,089,445 B2
  • Filed: 07/05/2016
  • Issued: 10/02/2018
  • Est. Priority Date: 07/03/2015
  • Status: Active Grant
First Claim
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1. A blister pack for dispensing medication, the blister pack comprising:

  • a substantially flat backing;

    a plurality of blisters formed on the backing, wherein the blisters and the backing form cavities for containing the medication, wherein each blister is coupled with another blister to form pairs of blisters, and wherein the pairs of blisters are arranged into two zones of blisters;

    a plurality of breakable resistive traces, wherein one or more of the resistive traces are applied to the backing under each blister and are configured to be broken when the blister is ruptured;

    a plurality of conductive traces applied to the backing, wherein for each pair of blisters, the one or more resistive traces under a first blister of the pair of blisters, having a first total resistance, is connected in parallel by the conductive traces with the one or more resistive traces under a second blister of the pair of blisters, having a second total resistance, wherein a ratio between the second total resistance and the first total resistance is between approximately 1.55 and 1.7 to 1, and wherein the resistive traces and the conductive traces under the pairs of blisters within each of the two zones of blisters are electrically connected to each other;

    a power source for selectively applying electrical power to the resistive traces and the conductive traces for each of the two zones of blisters; and

    a controller for detecting breakage of the resistive traces under the blisters for each pair of blisters within each of the two zones of blisters by measuring the voltage across the resistive traces under each pair of blisters.

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