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Automated reservoir fill system

  • US 10,532,835 B2
  • Filed: 06/24/2014
  • Issued: 01/14/2020
  • Est. Priority Date: 05/10/2011
  • Status: Active Grant
First Claim
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1. A system to automatically fill a reservoir for a portable medical device comprising:

  • a vial having an exterior surface and an interior vial volume partially filled with a liquid at a temperature and a gas, the gas occupying a headspace, the vial further having a vial port sealed with a vial septum;

    a reservoir having a reservoir volume defined between a reservoir port and a plunger head, the plunger head coupled to a plunger arm, the plunger arm coupled to a drive system defined to move the plunger arm within a chamber, the reservoir port being sealed by a reservoir septum;

    a transfer system having a vial end defined to pierce the vial septum and remain in contact with the liquid, the transfer system further having a reservoir end defined to pierce the reservoir septum and remain in the reservoir volume, the transfer system adapted to enable continuous fluid flow between the vial and the reservoir during filling of the reservoir and adapted to be removable from the reservoir after filling of the reservoir;

    a degas system defined to draw a vacuum on the headspace within the vial via the drive system;

    an agitator coupled to the exterior of the vial and not in contact with the interior vial volume of the vial, the agitator defined to introduce pulses from the exterior of the vial to assist in degassing the liquid in the vial; and

    a controller coupled to the drive system, the controller defined to actuate the agitator while air in the headspace is drawn through the transfer system to draw a partial vacuum on the headspace through the degas system and to degas the liquid in the vial, the controller further defined to actuate the drive system to draw the degassed liquid from the vial through the transfer system into the reservoir.

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