Occlusion sensing system for infusion pumps
First Claim
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1. A portable infusion pump system, comprising:
- a pump device including a pump housing that defines a space to receive a medicine, a separable cap device that mates with the pump housing to cover the space that receives the medicine, and a drive system arranged in the pump housing to dispense the medicine through a medicine flow path, wherein the cap device is matable with an infusion set having a length of flexible tubing;
a controller device that is removably attachable to the pump device, the controller device including a controller housing and control circuitry that communicates with the drive system of the pump device; and
an occlusion sensor system that communicates with the control circuitry to detect the presence of an occlusion in the medicine flow path, comprising;
a flow-responsive component arranged within a flow chamber of the cap device of the pump device, the flow-responsive component moving in the flow chamber in response to medicine flow through the flow chamber and acting on the flow-responsive component; and
a sensor circuit at least partially disposed within the controller device, the sensor circuit being arranged in the controller housing and adjacent to the cap device of the pump device so as to detect movement of the flow-responsive component to a first position while the controller device is removably attached to the pump device and the drive system in the pump housing urges medicine through the medicine flow path, the sensor circuit communicating a signal to the control circuitry in response to the movement of the flow-responsive component to the first position.
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Abstract
Some embodiments of an infusion pump system may include an occlusion sensor system that communicates with control circuitry to detect the presence of an occlusion. In some embodiments, the occlusion sensor system includes first components that are located within a disposable and non-reusable pump device, and second components that are located within a reusable controller device, the second components being in operable communication with the first components to determine whether a fluid is flowing from the pump device.
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Citations
30 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, a separable cap device that mates with the pump housing to cover the space that receives the medicine, and a drive system arranged in the pump housing to dispense the medicine through a medicine flow path, wherein the cap device is matable with an infusion set having a length of flexible tubing; a controller device that is removably attachable to the pump device, the controller device including a controller housing and control circuitry that communicates with the drive system of the pump device; and an occlusion sensor system that communicates with the control circuitry to detect the presence of an occlusion in the medicine flow path, comprising; a flow-responsive component arranged within a flow chamber of the cap device of the pump device, the flow-responsive component moving in the flow chamber in response to medicine flow through the flow chamber and acting on the flow-responsive component; and a sensor circuit at least partially disposed within the controller device, the sensor circuit being arranged in the controller housing and adjacent to the cap device of the pump device so as to detect movement of the flow-responsive component to a first position while the controller device is removably attached to the pump device and the drive system in the pump housing urges medicine through the medicine flow path, the sensor circuit communicating a signal to the control circuitry in response to the movement of the flow-responsive component to the first position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of monitoring a wearable infusion pump system for occlusions, the method comprising:
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preparing a pump device for use with a controller device, the pump device including a pump housing that encloses at least an actuator portion of a drive system to dispense medicine from the pump device and a cap device that mates with the pump housing to cover a space that receives the medicine, the controller device including a controller housing and control circuitry to communicate control signals to the actuator portion of the drive system within the pump housing of the pump device; removably attaching the pump device with the controller device so that a first electrical connector of the pump device engages a second electrical connector of the controller device; aligning a flow-responsive component of an occlusion sensor system with a sensor circuit of the occlusion sensor system, the flow-responsive component being movable within a flow chamber of the cap device of the pump device and the sensor circuit being arranged in the controller housing and adjacent to the pump device so as to detect movement of the flow-responsive component to a first position within the pump device while the drive system in the pump housing urges medicine through the flow chamber of the pump device; and activating the occlusion sensor system to determine if the medicine is flowing from the pump device. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A portable and wearable infusion pump assembly, comprising:
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a disposable and non-reusable pump device including;
a drive system to dispense a medicine from the pump device, a pump housing to enclose at least a portion of the drive system, a separable cap device that mates with the pump housing to cover a space that receives the medicine, and a first electrical connector that is externally accessible along the pump housing;a reusable controller device removably attached to the pump device, the controller device including;
a user interface having a display device and at least one button, control circuitry to communicate with the drive system of the pump device, a controller housing to enclose at least a portion of the control circuitry, and a second electrical connector is engaged with the first connector to provide electrical communication between the control circuitry and the drive system; andan occlusion sensor system that communicates with the control circuitry to detect the presence of an occlusion in a medicine flow path, the occlusion sensor system comprising; a flow-responsive component arranged within a flow chamber of the separable cap device of the pump device, the flow-responsive component moving in the flow chamber in response to medicine flow through the flow chamber and acting on the flow-responsive component; and a sensor circuit at least partially disposed within the controller device, the sensor circuit being arranged to detect movement of the flow-responsive component to a first position, the sensor circuit communicating a signal to the control circuitry in response to the movement of the flow-responsive component to the first position. - View Dependent Claims (22, 23, 24)
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25. A wearable infusion pump system, comprising:
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a disposable and non-reusable pump device including a drive system to dispense medicine from the pump device and a cap device to cover a space that receives the medicine, the controller device including a first electrical connector that is externally accessible; a reusable controller device removably attachable to the disposable and non-reusable pump device, the controller device including a second electrical connector that is engageable with the first connector to provide electrical communication between control circuitry of the controller device and the drive system of the pump device; and an occlusion sensor system that communicates with the control circuitry to detect the presence of an occlusion in a medicine flow path, the occlusion sensor system comprising; an obstruction member arranged in a stationary position within a flow chamber of the cap device of the pump device, the obstruction member remaining stationary in a medicine flow path to generate disturbances within the medicine flow path in response to medicine flow through the flow chamber; and a sensor circuit at least partially disposed within the controller device, the sensor circuit being arranged to detect the disturbances in the medicine flow path, the sensor circuit communicating a signal to the control circuitry in response to the disturbances. - View Dependent Claims (26, 27, 28, 29, 30)
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Specification