Cardiac device with patient-triggered storage of physiological sensor data
First Claim
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1. An implantable cardiac device for receiving a trigger signal from a triggering device that is operable by a patient when the patient desires to retain physiological data, comprising:
- a plurality of sensors for measuring the physiological data;
memory in which to store the data that are measured by the sensors;
memory region means for forming at least one circular buffer in the memory;
control means for storing the data in the memory; and
means for receiving the trigger signal from the triggering device when the patient desires to retain the data.
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Abstract
A cardiac device that stores physiological sensor data from multiple sensors is provided. A patient may use a portable triggering device to cause the cardiac device to store the data when the patient experiences symptoms that appear to be due to an abnormal heart condition. Alternatively, the data may be stored when the cardiac device identifies an abnormal physiological condition. A physician may select which sensors are used to store the data and may also adjust the number of memory buffers in which the data is to be stored.
326 Citations
26 Claims
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1. An implantable cardiac device for receiving a trigger signal from a triggering device that is operable by a patient when the patient desires to retain physiological data, comprising:
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a plurality of sensors for measuring the physiological data; memory in which to store the data that are measured by the sensors; memory region means for forming at least one circular buffer in the memory; control means for storing the data in the memory; and means for receiving the trigger signal from the triggering device when the patient desires to retain the data. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An implantable cardiac device for receiving a trigger signal from a triggering device that is operable by a patient when the patient desires to retain physiological data, comprising:
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a plurality of sensors for measuring the physiological data; memory in which to store the data that are measured by the sensors; control means for storing the data in the memory; and means for receiving the trigger signal from the triggering device when the patient desires to retain the data, wherein the control means comprises programmable means for receiving programming instructions from a physician that direct the control means to store data from a subset of the sensors.
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9. A method for storing data in a cardiac device having a control unit, a plurality of sensors connected to the control unit for sensing physiological data, memory connected to the control unit for storing the physiological data, the memory containing a memory region that is organized as at least one circular buffer, and communications circuitry connected to the control unit for receiving signals generated by a triggering device operable by a patient, the method comprising the steps of:
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measuring physiological data with the plurality of sensors; storing the physiological data in the memory, wherein the step of storing data further comprises the step of storing data in the memory region that is organized as the at least one circular buffer; generating a trigger signal with the triggering device; and receiving the trigger signal with the communications circuitry when the patient desires to retain the data. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for storing data in a cardiac device having a control unit, a plurality of sensors connected to the control unit for sensing physiological data, memory connected to the control unit for storing the physiological data, the memory containing a memory region that is organized as at least one circular buffer, and communications circuitry connected to the control unit fop receiving signals generated by a triggering device operable by a patient, the method comprising the steps of:
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measuring physiological data with the plurality of sensors; storing the physiological data in the memory, wherein the step of storing data further comprises the step of storing data in the memory region that is organized as the at least one circular buffer; generating a trigger signal with the triggering device; receiving the trigger signal with the communications circuitry when the patient desires to retain the data; and selecting a subset of the sensors from which data are to be retained.
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20. An implantable cardiac device for receiving a trigger signal from a triggering device that is operable by a patient when the patient desires to retain physiological data, the implantable cardiac device comprising:
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a plurality of sensors for measuring the physiological data; memory in which to store the data that are measured by the sensors; memory region means for forming at least one circular buffer; control means for storing the data in the memory; and means for receiving the trigger signal from the triggering device when the patient desires to retain the data, wherein the data are retained by the memory when the trigger signal is received by the means for receiving, wherein the control means can be programmed to store data in the memory from a subset of the sensors. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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Specification