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Dry Electrodes Disclosure Number: IPCOM000240835D
Publication Date: 2015-Mar-05
Document File: 1 page(s) / 134K

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The use of dry electrodes for the detection of ECG signals has the advantage that they do not dry out like the gel materials. The challenge is to produce a structure which is both comfortable to wear for several days and maintains good skin contact. This invention makes use of a ring structure to provide comfort while at the same time providing the required skin pressure to break through/push aside the Stratum Corneum layer. Existing dry electrodes make use of a solid disk structure. An extension to this invention allows for a hydrogel insert in the center to provide further stabilization to the structure and to further minimize motion artifact. The electrode could be moulded plastic coated with Ag/AgCl or suitable stainless steel also covered with Ag/AgCl. The plastic version is a candidate for the inserted gel disk.

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Title: Dry Electrodes 

Inventor: Mike Ginn 

Nature of the Problem: The problem to be solved is how to make contact with the conductive  layer  of  the  skin  and  to  maintain  that  contact  for  up  to  7  days.    The  device  used  should  not  degrade during that time or provide discomfort to the user. 
Description of the Invention: The use of dry electrodes for the detection of ECG signals has the  advantage  that  they  do  not  dry  out  like  the  gel  materials.    The  challenge  is  to  produce  a  structure which is both comfortable to wear for several days and maintains good skin contact.   This invention makes use of a ring structure to provide comfort while at the same time providing  the required skin pressure to break through/push aside the Stratum Corneum layer.  Existing dry  electrodes  make  use  of  a  solid  disk  structure.  An  extension  to  this  invention  allows  for  a  hydrogel  insert  in  the  center  to  provide  further  stabilization  to  the  structure  and  to  further  minimize  motion  artifact.  The  electrode  could  be  moulded  plastic  coated  with  Ag/AgCl  or  suitable  stainless  steel  also  covered  with  Ag/AgCl.    The  plastic  version  is  a  candidate  for  the  inserted gel disk.