Encoding and sensing of syringe information

  • US 7,018,363 B2
  • Filed: 01/18/2001
  • Issued: 03/28/2006
  • Est. Priority Date: 01/18/2001
  • Status: Expired due to Term
First Claim
Patent Images

1. A syringe for use with an injector having at a plurality of sensors located at different predetermined longitudinal positions on the injector, the syringe comprising:

  • a body comprising a wall and defining a longitudinal syringe axis;

    an attachment mechanism to attach the syringe to the injector; and

    a length of material disposed along at least a portion of the wall, the length of material adapted to propagate electromagnetic energy therethrough in a direction substantially parallel to the longitudinal syringe axis, the length of material comprising at least two indicators, each of the indicators being located at a different predetermined longitudinal position along the length of material, each of the indicators being positioned to longitudinally align with a sensor when the syringe is attached to the injector, each of the indicators being adapted to interact concurrently with at least a portion of the energy being propagated through the length of material in a direction substantially parallel to the longitudinal syringe axis in a manner that is readily detectable by the sensor in longitudinal alignment with the indicator, the at least two indicators providing information about the syringe configuration in the form of a binary code on the basis of presence or absence of one of the indicators at a predetermined longitudinal position on the length of material.

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