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Flexible electrically conductive nanotube sensor for elastomeric devices

  • US 9,851,268 B2
  • Filed: 04/28/2014
  • Issued: 12/26/2017
  • Est. Priority Date: 02/16/2012
  • Status: Active Grant
First Claim
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1. An elastic piezoresistive sensor tube configured to sense a dimensional change during a medical procedure, the elastic piezoresistive sensor tube comprising:

  • an elastic sensor tube body containing conductive nanotubes substantially homogeneously distributed within an interior of at least a portion of the elastic sensor tube body to form a conductive path, the elastic sensor tube body defining an internal conduit configured to transport fluid between a first end and a second end; and

    at least two electrodes in electrical connection with the conductive path;

    wherein the dimensional change is at least one of a stress in the elastic sensor tube body, a pressure applied to the elastic sensor tube body, an elongation of the elastic sensor tube body, and a load applied to the elastic sensor tube body.

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