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US 10,029,108 B2Granted
Adaptive self-testing and stress analysis of medical devices
AssigneeKoninklijke Philips N.V.
InventorsDaniel J. Powers, Carlton B. Morgan
Life of this patent
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Abstract
An improved self-testing method is described which is incorporated into a defibrillator (20). The method performs a self-testing protocol which operates on a first frequency until a threshold condition is reached. When the threshold condition is reached, the self-testing protocol switches to a second frequency. Such a method enables quicker identification of a failure mode in a population of defibrillators, while maintaining acceptable battery life in the device.
Claims9
A method for self-testing a defibrillator, comprising the steps of:
- periodically performing a self-test protocol at a first frequency;
- detecting a condition which exceeds a threshold condition;
- automatically switching the self-test protocol from the first frequency to a second frequency responsive to the detecting step;
- and
- periodically performing the self-test protocol at the second frequency,
- wherein the first frequency is higher than the second frequency,
- wherein the condition is an elapsed time and the threshold condition is a predetermined time period,
- wherein the second frequency is greater than zero.
5 more elements
A method for self-testing a defibrillator, comprising the steps of:
- periodically performing a self-test protocol at a first frequency;
- detecting a condition which exceeds a threshold condition;
- automatically switching the self-test protocol from the first frequency to a second frequency responsive to the detecting step;
- and
- periodically performing the self-test protocol at the second frequency,
- wherein the first frequency is higher than the second frequency,
- wherein the condition is a number of completed self-tests and the threshold condition is a predetermined number of self-tests,
- wherein the second frequency is greater than zero.
5 more elements
A method for self-testing a defibrillator, comprising the steps of:
- periodically performing a self-test protocol at a first frequency;
- detecting a condition which exceeds a threshold condition;
- automatically switching the self-test protocol from the first frequency to a second frequency responsive to the detecting step;
- and
- periodically performing the self-test protocol at the second frequency,
- wherein the first frequency is higher than the second frequency,
- wherein the condition is an environmental condition and the threshold condition is an environmental threshold condition,
- wherein the second frequency is greater than zero.
5 more elements
A defibrillator having an automatic self-testing protocol, comprising:
- a circuit for delivering high voltage electrotherapy to a pair of patient electrodes;
- a memory storing instructions for a self-testing protocol and a threshold condition;
- a sensor for detecting a condition corresponding to the threshold condition;
- a controller coupled to the memory and sensor and operable to conduct a self-test of the defibrillator using the self-testing protocol at either a first frequency if the condition does not exceed the threshold condition or at a second frequency if the condition subsequently exceeds the threshold condition;
- and
- an output that provides an indication of the result of the most recent self-test,
- wherein the second frequency is lower than the first frequency, and further wherein the threshold condition is selected from one of the group consisting of an elapsed time, a predetermined number of user activations, a predetermined number of user control button presses, and a predetermined number of mechanical shocks,
- wherein the second frequency is greater than zero.
5 more elements
A defibrillator having an automatic self-testing protocol, comprising:
- a circuit for delivering high voltage electrotherapy to a pair of patient electrodes;
- a memory storing instructions for a self-testing protocol and a threshold condition;
- a sensor for detecting a condition corresponding to the threshold condition;
- a controller coupled to the memory and sensor and operable to conduct a self-test of the defibrillator using the self-testing protocol at either a first frequency if the condition does not exceed the threshold condition or at a second frequency if the condition exceeds the threshold condition;
- and
- an output that provides an indication of the result of the most recent self-test, wherein the second frequency is lower than the first frequency,
- further comprising a receiver operable to wirelessly receive information that a second defibrillator having a temporally similar manufacturing date is defective,
- wherein the controller is further operable to operate the circuit in the self-testing protocol at a third frequency that is higher than the first frequency in response to the received information.
5 more elements
Dependencies are inferred from the claim text.