US 9,808,170 B2
Electrode with charge-operated indicator
John A. Lane, Weedsport, NY (US); Benjamin Freer, Rochester, NY (US); David E. Quinn, Auburn, NY (US); and Frederik W. Kroon, Auburn, NY (US)
Assigned to Welch Allyn, Inc., Skaneateles Falls, NY (US)
Filed by Welch Allyn, Inc., Skaneateles Falls, NY (US)
Filed on Mar. 15, 2013, as Appl. No. 13/836,738.
Prior Publication US 2014/0275823 A1, Sep. 18, 2014
Int. Cl. A61B 5/04 (2006.01); A61B 18/16 (2006.01); A61B 5/0408 (2006.01); A61B 5/01 (2006.01); A61B 5/00 (2006.01)
CPC A61B 5/04087 (2013.01) [A61B 5/01 (2013.01); A61B 5/7221 (2013.01); A61B 5/74 (2013.01); A61B 2560/0462 (2013.01); A61B 2562/0257 (2013.01)] 28 Claims
OG exemplary drawing
 
1. An electrode, comprising:
a support having a subject side and a non-subject side opposite the subject side, wherein when the electrode is removably attached to a skin surface of a subject, the subject side is oriented generally facing the subject;
first and second electrical contacts adapted to contact the skin surface of the subject, wherein at least a portion of the support spaces the first and second electrical contacts apart from the non-subject side;
a charge-holding structure of the electrode electrically connected, in series, between the first and second electrical contacts and configured to store a charge, wherein:
the charge-holding structure is at least partly (1) embedded in the support, (2) disposed on the subject side of the support, or (3) disposed on the non-subject side of the support; and
the charge-holding structure is configured to, in response to an electrical connection between the first electrical contact and the second electrical contact through the subject, dissipate at least some of the charge stored in the charge-holding structure through the subject; and
an indicator arranged so that at least a portion of the support spaces the indicator away from the subject side of the support, wherein the indicator is:
electrically connected to the charge-holding structure; and
configured to visibly change state in response to a change in the charge stored in the charge-holding structure.