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Sensor with electrical contact protection for use in fluid collection canister and negative pressure wound therapy systems including same

  • US 9,415,145 B2
  • Filed: 08/29/2014
  • Issued: 08/16/2016
  • Est. Priority Date: 08/21/2008
  • Status: Active Grant
First Claim
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1. A negative pressure wound therapy system, comprising:

  • a collection canister comprising a chamber configured to collect wound fluids;

    a sensor configured to detect a condition associated with the collection canister, the sensor comprising;

    a first electrode including a first portion and a second portion, wherein the first portion of the first electrode is supported by a surface of the collection canister, and the second portion of the first electrode extends into the chamber to an end located inside the chamber;

    a second electrode including a first portion and a second portion, wherein the first portion of the second electrode is supported by a surface of the collection canister, and the second portion of the second electrode extends into the chamber to an end located inside the chamber;

    wherein a change in resistance, capacitance, or voltage in the first and second electrodes indicates the condition associated with the collection canister; and

    an inner wall disposed within the chamber, wherein the ends of the second portions of the first and second electrodes are disposed within an area between a top portion of the collection canister and the inner wall.

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