Processing sensed accelerometer data for determination of bone healing
First Claim
1. A system for processing accelerometer data, the system comprising:
- a. an accelerometer for measuring a physiological acceleration parameter;
b. a first processor operatively connected to the accelerometer, the first processor configured to receive the acceleration parameter from the accelerometer and configured to output machine readable acceleration data, the machine readable acceleration data comprising time domain accelerometer data;
c. a power supply electrically connected to the first processor; and
d. a second processor configured to;
receive the machine readable acceleration data,transform the time domain accelerometer data into frequency domain accelerometer data, the frequency domain accelerometer data comprising data about one or more gait cycles,analyze a bone healing progression based on the frequency domain accelerometer data, andoutput a healing number that indicates a percentage of bone healing in the area surrounding the implant,wherein, to analyze the bone healing progression based on the frequency domain accelerometer data, the second processor is configured to analyze the frequency domain accelerometer to determine a level of bone healing of a subject in an area surrounding the intramedullary nail based on the data about the one or more gait cycles;
wherein the accelerometer and the first processor are located within the intramedullary nail or an intramedullary nail cap.
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Abstract
A system (800) for processing accelerometer data is disclosed. The system (800) includes an accelerometer (806), a first processor (810), a power supply (816), and a second processor (804). The accelerometer (806) measures a physiological acceleration parameter. The first processor (810) is operatively connected to the accelerometer (806). The first processor (810) is configured to receive the acceleration parameter from the accelerometer (806) and configured to output machine readable acceleration data. The machine readable acceleration data includes time domain accelerometer data. The power supply (816) is electrically connected to the first processor (810). The second processor (804) is configured to receive the machine readable acceleration data and transform the time domain accelerometer data into frequency domain accelerometer data. The frequency domain accelerometer data may be used to estimate patient healing status.
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Citations
27 Claims
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1. A system for processing accelerometer data, the system comprising:
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a. an accelerometer for measuring a physiological acceleration parameter; b. a first processor operatively connected to the accelerometer, the first processor configured to receive the acceleration parameter from the accelerometer and configured to output machine readable acceleration data, the machine readable acceleration data comprising time domain accelerometer data; c. a power supply electrically connected to the first processor; and d. a second processor configured to; receive the machine readable acceleration data, transform the time domain accelerometer data into frequency domain accelerometer data, the frequency domain accelerometer data comprising data about one or more gait cycles, analyze a bone healing progression based on the frequency domain accelerometer data, and output a healing number that indicates a percentage of bone healing in the area surrounding the implant, wherein, to analyze the bone healing progression based on the frequency domain accelerometer data, the second processor is configured to analyze the frequency domain accelerometer to determine a level of bone healing of a subject in an area surrounding the intramedullary nail based on the data about the one or more gait cycles; wherein the accelerometer and the first processor are located within the intramedullary nail or an intramedullary nail cap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 22, 23, 24, 25, 26, 27)
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16. A method of determining the healing progression status of a subject having an intramedullary implant, the method comprising:
executing instructions stored on one or more machine-readable memory devices with one or more processors, wherein at least one of the one or more processors is operatively connected to an accelerometer that is operatively connected to the subject, wherein executing the instructions causes the one or more processors to perform the steps of; a) collecting accelerometer data from the accelerometer; b) retrieving the collected accelerometer data, the accelerometer data having a time domain component; c) transforming the time domain accelerometer data into frequency domain accelerometer data, the frequency domain accelerometer data comprising data about one or more gait cycles; d) analyzing the frequency domain accelerometer data for bone healing progression of the subject in an area surrounding the intramedullary implant, wherein analyzing the frequency domain accelerometer data comprises determining a level of bone healing of the subject in the area surrounding the intramedullary implant based on the data about the one or more gait cycles; and e) outputting a healing number that indicates a percentage of bone healing in the area surrounding the intramedullary implant. - View Dependent Claims (18, 19, 20)
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17. A system for processing accelerometer data, the system comprising:
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a) an accelerometer for measuring a physiological acceleration parameter; b) a first processor operatively connected to the accelerometer, the first processor configured to receive the acceleration parameter from the accelerometer and configured to output machine readable acceleration data, the machine readable acceleration data comprising time domain accelerometer data; c) a power supply electrically connected to the first processor; and d) a second processor configured to; receive the machine readable acceleration data, transform the time domain accelerometer data into frequency domain accelerometer data, and analyze a bone healing progression of a patient in an area surrounding an implant based on the frequency domain accelerometer data, wherein, to analyze the bone healing progression based on the frequency domain accelerometer data, the second processor is configured to; extract, from the time domain acceleration data, multiple discrete data sets; identify, based on the frequency domain accelerometer data corresponding to the multiple discrete data sets, a subset of the multiple discrete data sets that each comprise data about one or more gait cycles; and determine a level of bone healing of the patient in the area surrounding the implant based on the subset of the multiple discrete data sets that each comprise data about one or more gait cycles; wherein, to determine the level of healing based on the data about the one or more gait cycles, the second processor is configured to; measure an area under particular regions of curves representing the frequency domain accelerometer data corresponding to the subset of discrete data sets; and determine the level of bone healing of the patient in the area surrounding the implant based on the measured area. - View Dependent Claims (21)
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Specification