Physiological parameter analysis for an implantable restriction device and a data logger
First Claim
1. A method of obtaining information about a physiological parameter, comprising:
- collecting data from an implantable restriction device over a time period, the collected data containing information about values of a parameter sensed within a body during the time period; and
in a data processing device, analyzing the collected data to determine information about a physiological parameter for at least a portion of the time period, wherein the analysis includes calculating a rate of change of the values of the sensed parameter for a window within the time period;
calculating a rate at which the rate of change is changing; and
dividing the rate of change by the rate at which the rate of change is changing and multiplying by a period of the window to obtain a predicted amount of time until the values of the sensed parameter will have a rate of change that is about zero, the value of the physiological parameter when the rate of change is about zero representing a baseline value.
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Accused Products
Abstract
An implantable restriction device can be configured to provide a restriction in a patient, for example as a function of the pressure of fluid. The implantable restriction device can include one or more sensors configured to sense a variety of parameters, such as pressure of the fluid within the implantable restriction device, pulse width, pulse amplitude, pulse count, pulse duration, or frequency, electrical characteristics, or other parameters. Data obtained by the one or more sensors (for example, the data representing pressure, pulse characteristics, and so on) may be communicated to a device located external to the patient, such as a data logger, using telemetry coils or other communicators. The data logger may store the data, and may communicate the data to a remote location via a network such as the Internet. A docking station may be provided to couple the data logger to a network and/or to recharge a cell in the data logger. The logged data may be analyzed and/or displayed using a variety of techniques to assess and/or track the condition of the restriction device or of the patient, to monitor patient physiology, or for other purposes.
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Citations
28 Claims
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1. A method of obtaining information about a physiological parameter, comprising:
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collecting data from an implantable restriction device over a time period, the collected data containing information about values of a parameter sensed within a body during the time period; and in a data processing device, analyzing the collected data to determine information about a physiological parameter for at least a portion of the time period, wherein the analysis includes calculating a rate of change of the values of the sensed parameter for a window within the time period; calculating a rate at which the rate of change is changing; and dividing the rate of change by the rate at which the rate of change is changing and multiplying by a period of the window to obtain a predicted amount of time until the values of the sensed parameter will have a rate of change that is about zero, the value of the physiological parameter when the rate of change is about zero representing a baseline value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of analyzing data from an implantable restriction device to determine information about a baseline of a physiological parameter, comprising:
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collecting data from an implantable restriction device over a time period, the collected data containing information about values of a parameter sensed within a body during the time period; and in a data processing device, calculating, based at least in part on one or more values of the sensed parameter during the time period, a predicted amount of time until the rate of change of values of the physiological parameter will be about zero, the value of the physiological parameter when the rate of change is about zero representing a baseline value, wherein calculating the predicted amount of time comprises; calculating a rate of change of the values of the sensed parameter for a window within the time period; calculating a rate at which the rate of change is changing; and dividing the rate of change by the rate at which the rate of change is changing and multiplying by a period of the window to obtain the predicted amount of time until the values of the sensed parameter will have a rate of change that is about zero. - View Dependent Claims (24, 25, 26, 27, 28)
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Specification