Headset and electrodes for sensing bioelectrical potential and methods of operation thereof
Disclosed are medical devices for sensing bioelectrical potential including an electroencephalography (EEG) headset, electrodes compatible therewith, and methods of operation thereof. The headset can comprise a left junction and a right junction, a plurality of length-adjustable bands connecting the left junction and the right junction, and a number of electrodes. Each of the electrodes can comprise an electrode body coupled to one of the plurality of length-adjustable bands and a detachable electrode tip configured to be detachably coupled to the electrode body. The electrode tip can comprise an electrode tip body, one or more deflectable electrode legs coupled to the electrode tip body, and a conductive cushioning material coupled to a segment of at least one of the one or more electrode legs. The conductive cushioning material can retain or be saturated with one or more conductors.
1. An electrode tip for sensing bioelectrical potentials, comprising:
an electrode tip body;
electrode arms coupled to the electrode tip body; and
electrode legs coupled to the electrode arms,
wherein the electrode legs have a non-biased configuration and a splayed configuration, and
wherein the electrode legs are configured to translate into the splayed configuration when a compressive force is applied to the electrode tip body and the one or more electrode legs, wherein each of the electrode legs is an elongate rod having a leg diameter, wherein the electrode tip body is a cylindrical body having a tip body diameter, and wherein a ratio of the leg diameter to the tip body diameter is between 1:2 and 1:10.
2. The electrode tip of claim 1 , wherein each of the electrode legs has a leg longitudinal axis, wherein the leg longitudinal axes of the electrode legs are parallel to one another when the electrode legs are in the non-biased configuration, and wherein the leg longitudinal axes of the electrode legs are non-parallel to one another when the electrode legs are in the splayed configuration.
3. The electrode tip of claim 1 , wherein the electrode arms curve along a spiral pattern or trajectory such that each of the electrode arms curve in at least one of a clockwise or left-handed rotational direction and a counterclockwise or right-handed rotational direction.
4. The electrode tip of claim 1 , wherein each of the electrode arms comprises a proximal arm end and a distal arm end, and wherein the distal arm end is planar or of the same vertical height as the proximal arm end.
5. The electrode tip of claim 1 , wherein each of the electrode arms comprises a proximal arm end and a distal arm end, and wherein each of the electrode arms curves along a pitched or descending helical trajectory such that the distal arm end is vertically lower or below the proximal arm end.
6. The electrode tip of claim 1 , further comprising lateral struts extending radially from the electrode tip body, wherein at least one of the lateral struts couple at least one of the electrode arms to the electrode tip body.
7. The electrode tip of claim 6 , wherein the electrode tip body has a circular transverse cross-section, and wherein the lateral struts are coupled to the electrode tip body at positions arranged uniformly around a circumference of the electrode tip body.
8. The electrode tip of claim 1 , wherein each of the electrode legs is an elongate rod having a leg diameter, a leg proximal end, and leg distal end, wherein each of the electrode legs is coupled to an electrode foot at the leg distal end.
9. The electrode tip of claim 8 , wherein the electrode foot has a maximum foot diameter, and wherein the maximum foot diameter is greater than the leg diameter.
10. The electrode tip of claim 8 , wherein the electrode foot is made in part of a solid conductive material.
11. Th electrode tip of claim 8 , wherein each of the electrode legs has a leg height as measured from the leg proximal end to the leg distal end, wherein the electrode foot has a foot proximal end, a foot distal end, and a foot height as measured from the foot proximal end to the foot distal end, wherein the leg height is greater than the foot height.
12. The electrode tip of claim 11 , wherein a ratio of the foot height to the leg height is between 1:1 and 1:10.
13. The electrode tip of claim 1 , further comprising a ferromagnetic component coupled to the electrode tip body.