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Syringe characterization

  • US 9,976,551 B2
  • Filed: 12/03/2013
  • Issued: 05/22/2018
  • Est. Priority Date: 12/07/2012
  • Status: Active Grant
First Claim
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1. A device for syringe characterization, comprising:

  • a syringe pump with a plunger driver, for a syringe configured to contain a fluid, wherein the syringe includes a barrel and a plunger, the barrel and the plunger therewithin together defining a central longitudinal axis of the syringe;

    a barrel outer diameter sensor;

    a linear position sensor in a substantially parallel orientation with the central longitudinal axis of the syringe when the syringe is installed in the syringe pump;

    at least one moveable marker slidably coupled to the linear position sensor to indicate a location along the linear position sensor corresponding to a selected location on the barrel of the syringe when the syringe is installed in the syringe pump; and

    software configured to (i) determine a first wall thickness of the syringe based on a sensed barrel outer diameter, (ii) determine a second wall thickness of the syringe based on the indicated location along the linear position sensor corresponding to the selected location on the barrel of the syringe, and (iii) compare the first and second wall thickness to determine if the determined wall thicknesses are within an acceptable limit, before determining a volume of medicament deliverable per distance of plunger travel.

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