Self-test for analgesic product
First Claim
1. An electrotransport drug delivery device that prevents unwanted delivery of drug while in an off state when the device is powered on, the device comprising:
- an anode and a cathode;
an activation circuit configured to apply current between the anode and cathode to deliver a drug by electrotransport when the device is in an on state and not in the off state; and
wherein the device is configured to shut down when there is a current flowing between the anode and cathode that is greater than an Output Current Off threshold when the device is in an off state while powered on;
further wherein the device is configured to automatically and periodically determine if there is a current flowing between the anode and cathode when the activation circuit is in the off state while powered on.
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Accused Products
Abstract
Electrotransport drug delivery devices, system and methods of using configured to determine if a current is present between the anode and cathode when drug is not intended to be delivered by the device. These devices/systems may include an off-current module to determine that any current (e.g., which may be inferred by measuring potential difference between the anode and cathode of the device) flowing between the anode and cathode is below a threshold value when the device is not supposed to be delivering drug, thereby preventing unintended delivery of drug and/or alerting a user that unintended delivery of drug may occur.
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Citations
23 Claims
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1. An electrotransport drug delivery device that prevents unwanted delivery of drug while in an off state when the device is powered on, the device comprising:
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an anode and a cathode; an activation circuit configured to apply current between the anode and cathode to deliver a drug by electrotransport when the device is in an on state and not in the off state; and wherein the device is configured to shut down when there is a current flowing between the anode and cathode that is greater than an Output Current Off threshold when the device is in an off state while powered on; further wherein the device is configured to automatically and periodically determine if there is a current flowing between the anode and cathode when the activation circuit is in the off state while powered on. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of automatically and periodically confirming that drug will not be delivered by an electrotransport drug delivery device when the device is in an off state while powered on, the method comprising:
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determining if there is a current flowing between an anode and a cathode of the electrotransport drug delivery device when the electrotransport drug delivery device is in an off state while powered on, wherein the electrotransport drug delivery device includes an activation circuit that is configured to apply current between the anode and the cathode to deliver a drug when the device is in an on state and not deliver drug in the off state; and triggering an indicator to indicate a leak current if there is a current flowing between the anode and cathode that is greater than an Output Current Off Threshold when the electrotransport drug delivery device is in an off state while powered on, wherein triggering an indicator comprises one or more of;
a visible notification, an audible notification, and a vibratory notification; andperforming a device shutdown when the indicator is triggered. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification