Upgrade to enjoy subscriber-only features like email alerts and data export. See the Plans and Pricing
|Title:||Circuits for increasing the reliability of an iontophoretic system|
|Abstract:||Circuits are provided for increasing the reliability of an iontophoretic drug delivery system. Such circuits detect the failure of a crystal oscillator of the system, the failure of a voltage reference of the system, or the impending failure of a battery power source of the system.|
|Inventor(s):||Flower; Ronald J. (Atlanta, GA), Garde; Kenneth E. (New Windsor, NY), Walter; Steven D. (Vernon, NJ)|
|Assignee:||Vyteris, Inc. (Fair Lawn, NJ)|
|Filing Date:||Apr 22, 2002|
|Claims:||1. A circuit for detecting an impending failure of a battery in an iontophoretic system comprising: a microprocessor having an analog-to-digital (A/D) converter for converting an analog input to a digital output, said microprocessor capable of selecting between a voltage reference voltage V.sub.ref and a battery voltage V.sub.cc as a reference for the A/D converter, wherein when V.sub.cc is selected as the A/D reference, V.sub.ref is read by said A/D converter of said microprocessor as the analog input, the A/D converter outputting a digital count proportional to the ratio (V.sub.ref /V.sub.cc), wherein the impending failure of the battery is determined when the digital count is greater than a predetermined threshold.|
Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verifification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.