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US Patent 9345422 Method of locating the tip of a central venous catheter

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Is a
Patent
Patent
1

Patent attributes

Patent Applicant
‌
Bard Access Systems
1
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
1
Patent Number
93454221
Patent Inventor Names
Peter M. Rothenberg1
Date of Patent
May 24, 2016
1
Patent Application Number
145065521
Date Filed
October 3, 2014
1
Patent Citations Received
‌
US Patent 11944810 Systems and methods for trans-esophageal sympathetic ganglion recruitment
2
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US Patent 11707619 Apparatus and methods for assisted breathing by transvascular nerve stimulation
3
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US Patent 11771900 Circuitry for medical stimulation systems
‌
US Patent 11883658 Devices and methods for prevention, moderation, and/or treatment of cognitive injury
4
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US Patent 11890462 Stimulation systems and related user interfaces
5
Patent Primary Examiner
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William Levicky
1
Patent abstract

A method of locating a tip of a central venous catheter (“CVC”) having a distal and proximal pair of electrodes disposed within the superior vena cava, right atrium, and/or right ventricle. The method includes obtaining a distal and proximal electrical signal from the distal and proximal pair of electrodes and using those signals to generate a distal and proximal P wave, respectively. A deflection value is determined for each of the P waves. A ratio of the deflection values is then used to determine a location of the tip of the CVC. Optionally, the CVC may include a reference pair of electrodes disposed within the superior vena cava from which a reference deflection value may be obtained. A ratio of one of the other deflection values to the reference deflection value may be used to determine the location of the tip of the CVC.

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