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US 7,232,423 B2Granted
Infusion pump system, an infusion pump unit and an infusion pump
AssigneeM2 Medical A/S
InventorMorten Mernøe
Life of this patent
Estimating the term…
Abstract
An infusion pump unit includes a housing sized to allow the pump unit to be carried as a portable unit. The housing contains a controllable pumping system for pumping fluid. The pump actuator is lighter, smaller, quieter and less power consuming.
Claims38
An infusion pump device, comprising:
- a portable pump housing defining a space to receive insulin;
- a user interface coupled to the portable pump housing, the user interface comprising a display device that shows data to a user;
- a piston rod movably arranged in the housing to advance from a first position to a second position so as to dispense insulin from the pump housing when insulin is received in the pump housing;
- a gear that is rotatable in an activation direction to drive the piston rod from the first position to the second position;
- a ratchet body that engages the gear, the ratchet body being adjustable from a non-activating position to an activating position so as to incrementally rotate the gear in the activation direction;
- a pawl device that engages the gear to prevent rotation of the gear in a direction opposite the activation direction;
- and
- a spring bias device to urge the ratchet body from the non-activating position to the activating position so that the piston rod is advanced to the second position by mechanical force of the spring device.
5 more elements
An infusion pump device, comprising:
- a portable pump housing defining a space to receive an insulin container;
- user interface coupled to the pump housing, the user interface comprising a display device that showing data related to insulin treatment and a plurality of buttons for actuation;
- a piston rod movably arranged in the housing to advance from a first position to a second position so as to dispense insulin from the container when the container is received in the pump housing;
- a gear that is rotatable in an activation direction to drive the piston rod from the first position to the second position;
- a ratchet body that engage the gear, the ratchet body being adjustable from a non-activating position to an a activating position so as to incrementally rotate the gear in the activation direction;
- a locking pawl device that engages the gear to prevent rotation of the gear in a direction opposite the activation direction;
- and
- a spring bias device that exerts an activation displacement force upon the ratchet body to urge the ratchet body from the non-activating position to the activating position so that the piston rod is advanced to the second position by mechanical force of the spring device.
5 more elements
Dependencies are inferred from the claim text.