Implantable medical pump diagnostics
First Claim
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1. A medical device system comprising:
- a medical pump configured to deliver a therapeutic fluid to a patient, the medical pump comprising an actuation mechanism configured to be energized to provide a pump stroke;
a sensor configured to detect a property associated with energizing the actuation mechanism, the property associated with energizing the actuation mechanism comprising a shape of at least a waveform portion of an electrical waveform applied to the actuation mechanism when the actuation mechanism is energized to provide the pump stroke; and
a processor configured to;
store a baseline shape that indicates one of a normal pump stroke and a fault condition in a memory,compare the baseline shape to the shape of at least the waveform portion of the electrical waveform applied to the actuation mechanism when the actuation mechanism is energized to provide the pump stroke, anddetermine, based on the comparison, whether the shape of at least the waveform portion of the electrical waveform indicates that a fault condition exists within the medical pump.
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Abstract
A method of detecting a fault condition within an implantable medical pump comprises delivering therapeutic fluid using a medical pump comprising an actuation mechanism configured to be energized to provide a pump stroke, detecting a property associated with energizing the actuation mechanism, and determining whether the property associated with energizing the actuation mechanism indicates that a fault condition exists with the medical pump.
63 Citations
54 Claims
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1. A medical device system comprising:
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a medical pump configured to deliver a therapeutic fluid to a patient, the medical pump comprising an actuation mechanism configured to be energized to provide a pump stroke; a sensor configured to detect a property associated with energizing the actuation mechanism, the property associated with energizing the actuation mechanism comprising a shape of at least a waveform portion of an electrical waveform applied to the actuation mechanism when the actuation mechanism is energized to provide the pump stroke; and a processor configured to; store a baseline shape that indicates one of a normal pump stroke and a fault condition in a memory, compare the baseline shape to the shape of at least the waveform portion of the electrical waveform applied to the actuation mechanism when the actuation mechanism is energized to provide the pump stroke, and determine, based on the comparison, whether the shape of at least the waveform portion of the electrical waveform indicates that a fault condition exists within the medical pump. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A medical device system comprising:
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a medical pump configured to deliver a therapeutic fluid to a patient, the medical pump comprising an actuation mechanism configured to be energized to provide a pump stroke; a sensor configured to detect a property associated with energizing the actuation mechanism, the property associated with energizing the actuation mechanism comprising a shape of at least a waveform portion of an electrical waveform applied to the actuation mechanism when the actuation mechanism is energized to provide the pump stroke; and a processor configured to determine whether the shape of at least the waveform portion of the electrical waveform indicates that a fault condition exists within the medical pump, wherein; the shape of at least the waveform portion of the electrical waveform applied to the actuation mechanism when the actuation mechanism is energized to provide the pump stroke is a first shape of at least a first waveform portion of a first electrical waveform applied to the actuation mechanism when the actuation mechanism is energized to provide a first pump stroke, and wherein; the sensor is configured to detect a second shape of at least a second waveform portion of a second electrical waveform applied to the actuation mechanism when the actuation mechanism is energized to provide a second pump stroke subsequent to the first pump stroke, the second shape being different than the first shape, the processor is configured to recognize a progression from the first shape of the at least first waveform portion to the second shape of the at least second waveform portion, and the processor is configured to determine that the fault condition exists within the medical pump by determining that the progression from the first shape of the at least first waveform portion to the second shape of the at least second waveform portion occurs within a predetermined number of pump strokes. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A method of detecting a fault condition within an implantable medical pump, the method comprising:
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delivering, by the medical pump, a therapeutic fluid to a patient, the medical pump comprising an actuation mechanism configured to be energized to provide a pump stroke; detecting, by a sensor, a property associated with energizing the actuation mechanism, the property associated with energizing the actuation mechanism comprising a shape of at least a waveform portion of an electrical waveform applied to the actuation mechanism when the actuation mechanism is energized to provide the pump stroke; storing, by a processor, a baseline shape that indicates one of a normal pump stroke and a fault condition in a memory; comparing, by the processor, the baseline shape to the shape of at least the waveform portion of the electrical waveform applied to the actuation mechanism when the actuation mechanism is energized to provide the pump stroke; and determining, by the processor and based on the comparing, whether the shape of at least the waveform portion of the electrical waveform indicates that a fault condition exists within the medical pump. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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Specification