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Device and method for dispensing fluid from an infusion pump

  • US 9,839,745 B2
  • Filed: 07/03/2013
  • Issued: 12/12/2017
  • Est. Priority Date: 07/31/2012
  • Status: Active Grant
First Claim
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1. A modular infusion pump for dispensing a fluid, comprising:

  • a reservoir module, comprising;

    a tubular, curved reservoir containing the fluid, the curved reservoir having a proximal end and a distal end;

    a flexible drive train configured to slidably fit within the curved reservoir and to expel the fluid through the proximal end of the reservoir, the flexible drive train including;

    a plunger at a proximal end of the drive train,a cursor at a distal end of the drive train,a flexible filament extending between the cursor and the plunger, anda plurality of balls positioned along and connected by the filament between the plunger and the cursor,wherein each of the plurality of balls includes a center through hole extending therethrough, the flexible filament extending through the center through holes of the balls, wherein each of the balls further comprises a tapered slot, wherein a diameter of the center through hole is smaller than a largest width of the tapered slot located at an outer diameter of the ball, and further wherein the diameter of the center through hole is larger than a smallest width of the tapered slot located adjacent to the center through hole; and

    a control module comprising an electric motor, a drive shaft, and a lead screw, wherein the lead screw is configured to mechanically engage the drive train when the reservoir module is connected to the control module.

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