The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 2025
Filed:
Apr. 30, 2021
Welch Allyn, Inc., Skaneateles Falls, NY (US);
Edward Bremer, Victor, NY (US);
Thaddeus J. Wawro, Auburn, NY (US);
Welch Allyn, Inc., Skaneateles Falls, NY (US);
Abstract
Examples for monitoring impedance of a hydrogel in an electrode. The electrode is applied to a patient to measure impedance through the patient's body. Hydrogel is used to conduct electrical signals between the patient's body and sensing circuitry of the electrode. The impedance of the hydrogel can change over time as the electrode is being worn. When the electrode is applied to a subject, the device measures the impedance of the hydrogel to determine a baseline value. This baseline value can then be used to calculate any necessary impedance corrections over the life of the electrode. Measurements are taken via a separate conductive trace that measures only impedance through the hydrogel and not from the patient's body. This allows for more accurate impedance readings to be taken with the electrode.