Infusion pump systems and methods
First Claim
Patent Images
1. A portable infusion pump system, comprising:
- a pump device including;
a pump housing that defines a space to receive a medicine, and a drive system to dispense the medicine from the pump device when the medicine is received in the space of the pump housing; and
a controller device electrically connectable to the pump device so as to control dispensation of the medicine from the pump device, the controller device comprising;
a battery pack including a voltage output terminal, a return terminal, a third terminal, and at least one rechargeable battery cell that is coupled to the voltage output terminal so as to provide electrical energy to at least one of a component of the controller device and the drive system of the pump device;
a monitor circuit that is configured to sense a voltage of the at least one rechargeable battery cell;
a first resistor coupled between the at least one rechargeable battery cell and a voltage sense terminal of the monitor circuit;
a second resistor coupled between the voltage sense terminal of the monitor circuit and the third terminal of the battery pack;
wherein, in response to a user-initiated detachment of the pump device from the controller device, the monitor circuit is configured to cause the battery pack to act according to a low power mode independent of the voltage of the at least one rechargeable battery cell;
wherein, in response to the user-initiated detachment of the pump device from the controller device, a low-resistance connection is provided between the third terminal of the battery pack and the return terminal of the battery pack.
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Abstract
Some embodiments of an infusion pump system can include a controller in electrical communication with a pump device so as to provide selected dosages of a medicine to a user over a period of time. The infusion pump system can employ a number of power management techniques to reduce the likelihood current drain of a rechargeable battery of the infusion pump system.
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Citations
18 Claims
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1. A portable infusion pump system, comprising:
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a pump device including;
a pump housing that defines a space to receive a medicine, and a drive system to dispense the medicine from the pump device when the medicine is received in the space of the pump housing; anda controller device electrically connectable to the pump device so as to control dispensation of the medicine from the pump device, the controller device comprising;
a battery pack including a voltage output terminal, a return terminal, a third terminal, and at least one rechargeable battery cell that is coupled to the voltage output terminal so as to provide electrical energy to at least one of a component of the controller device and the drive system of the pump device;
a monitor circuit that is configured to sense a voltage of the at least one rechargeable battery cell;
a first resistor coupled between the at least one rechargeable battery cell and a voltage sense terminal of the monitor circuit;
a second resistor coupled between the voltage sense terminal of the monitor circuit and the third terminal of the battery pack;wherein, in response to a user-initiated detachment of the pump device from the controller device, the monitor circuit is configured to cause the battery pack to act according to a low power mode independent of the voltage of the at least one rechargeable battery cell; wherein, in response to the user-initiated detachment of the pump device from the controller device, a low-resistance connection is provided between the third terminal of the battery pack and the return terminal of the battery pack. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of controlling a portable infusion pump system, comprising:
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connecting a controller device to a pump device so as to send a control signal from the controller device to the pump device for controlling dispensation of medicine from the pump device, the controller device comprising;
a battery pack including a voltage output terminal, a return terminal, a third terminal, and at least one rechargeable battery cell that is coupled to the voltage output terminal and that is configured to provide electrical energy to at least one of a user interface component of the controller device and a drive system of the pump device;
a monitor circuit that is configured to sense a voltage of the at least one rechargeable battery cell;
a first resistor coupled between the at least one rechargeable battery cell and a voltage sense terminal of the monitor circuit;
a second resistor coupled between the voltage sense terminal of the monitor circuit and the third terminal of the battery pack; andproviding a low-resistance connection between the third terminal of the battery pack and the return terminal of the battery pack to cause the battery pack to act according to a low power mode independent of the voltage of the at least one rechargeable battery cell; wherein the low-resistance connection between the third terminal of the battery pack and the return terminal of the battery pack is provided in response to a user-initiated detachment of the pump device from the controller device. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification