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Dry Electrodes

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

Publishing Venue

The IP.com Prior Art Database

Related People

Mike Ginn: INVENTOR

Abstract

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.