Patent ID: 8795231

Claim:
A system to automatically fill a reservoir for a portable medical device comprising: a vial having a vial volume partially filled with a liquid 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 first degas system having a temperature system to elevate the liquid temperature before the liquid enters the reservoir; a second degas system having a valve end coupled to a check valve, the second degas system further having a headspace end defined to pierce the vial septum, the headspace end being positioned in the headspace, the check valve further being coupled to a vacuum system; 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; a controller coupled to the drive system, and the second degas system, the controller defined to actuate the second degas system to automatically draw a partial vacuum within the vial for a period of time before the drive system is automatically actuated to draw the fluid from the vial to the reservoir.