Neural depth probes and related systems and methods
Disclosed herein are improved neural depth probes for detection and stimulation, along with various related improved components, devices, methods, and technologies. More specifically, the devices are layered depth electrodes with at least two layers, with each of the layers containing at least one thin-film trace disposed thereon. Each of the devices can also have a plurality of layers with at least two traces on each layer and contacts coupled to each trace.
1. An intracranial electrode comprising an elongate body comprising:
(a) a first elongate layer;
(b) at least one first layer conductive connector disposed on and along a length of the first elongate layer, the at least one first layer conductive connector comprising a first side extension extending transversely from a distal end of the at least one first layer conductive connector toward one of an at least two elongate sides of the elongate body;
(c) a second elongate layer attached to the first elongate layer such that the at least one first layer conductive connector is disposed between the first and second elongate layers, the second elongate layer comprising first and second partial layers;
(d) a third elongate layer attached to the second elongate layer, wherein a lumen is defined by the first and second partial layers and the first and third elongate layers, wherein the lumen extends along a length of the elongate body;
(e) at least one third layer conductive connector disposed on and along a length of the third elongate layer, the at least one third layer conductive connector comprising a third side extension extending transversely from a distal end of the at least one third layer conductive connector toward one of the at least two elongate sides of the elongate body;
(f) at least one first layer contact coupled to the elongate body, wherein the at least one first layer contact is electrically coupled with the first side extension; and
(g) at least one second layer contact coupled to the elongate body, wherein the at least one second layer contact is electrically coupled with the third side extension.
2. The intracranial electrode of claim 1 , wherein the at least one first layer conductive connector is a thin-film conductive connector and the at least one third layer conductive connector is a thin-film conductive connector.
3. The intracranial electrode of claim 1 , wherein the at least one first layer contact is disposed around the elongate body and the at least one second layer contact is disposed around the elongate body.
4. The intracranial electrode of claim 3 , wherein the at least one first layer contact is disposed around a full outer circumference of the device body and the at least one second layer contact is disposed around the full outer circumference of the elongate body.
5. The intracranial electrode of claim 1 , wherein the third elongate layer comprises at least one third layer opening defined in a proximal portion of the third elongate layer, wherein a proximal portion of the at least one third layer conductive connector is disposed through the at least one third layer opening and on and along a length of the first elongate layer.
6. The intracranial electrode of claim 1 , further comprising:
(a) a fourth elongate layer attached to the third elongate layer such that the at least one third layer conductive connector is disposed between the second and fourth elongate layers;
(b) at least one fourth layer conductive connector disposed on and along a length of the fourth elongate layer, the at least one fourth layer conductive connector comprising a fourth side extension extending transversely from a distal end of the at least one fourth layer conductive connector one of the at least two elongate sides of the elongate body; and
(c) at least one third layer contact coupled to the elongate body, wherein the at least one third layer contact is electrically coupled with the fourth side extension.
7. The intracranial electrode of claim 6 , further comprising at least one second layer elongate conductive connector disposed on and along a length of the second elongate layer, the at least one second layer elongate conductive connector comprising a second side extension extending transversely from a distal end of the at least one second layer conductive connector toward one of the at least two elongate sides of the elongate body, wherein the second elongate layer comprises at least one second layer opening defined in a proximal portion of the second elongate layer, wherein a proximal portion of the at least one second layer elongate conductive connector is disposed through the at least one second layer opening and on and along a length of the first elongate layer.
8. The intracranial electrode of claim 6 , further comprising:
(a) a fifth elongate layer attached to the first elongate layer;
(b) at least one fifth layer conductive connector disposed on and along a length of the fifth elongate layer such that the at least one fifth layer conductive connector is disposed between the first and fifth elongate layer, the at least one fifth layer conductive connector comprising a fifth side extension extending transversely from a distal end of the at least one fifth layer conductive connector toward one of the at least two elongate sides of the elongate body; and
(c) at least one third layer contact coupled to the elongate body, wherein the at least one third layer contact is electrically coupled with the fifth side extension.
9. A depth electrode comprising an elongate body comprising:
(a) a first elongate non-conductive layer;
(b) at least one first layer elongate conductive connector disposed on and along a length of the first elongate non-conductive layer, the at least one first layer elongate conductive connector comprising a first side extension extending transversely from a distal end of the at least one first layer elongate conductive connector toward a side of the first elongate non-conductive layer;
(c) a second elongate non-conductive layer attached to the first elongate non-conductive layer such that the at least one first layer elongate conductive connector is disposed between the first and second elongate non-conductive layers;
(d) at least one second layer elongate conductive connector disposed on and along a length of the second elongate non-conductive layer, the at least one second layer elongate conductive connector comprising a second side extension extending transversely from a distal end of the at least one second layer elongate conductive connector toward a side of the second elongate non-conductive layer;
(e) at least one first layer contact disposed around the elongate body, wherein the at least one first layer contact is electrically coupled with the first side extension; and
(f) at least one second layer contact disposed around the elongate body, wherein the at least one second layer contact is electrically coupled with the second side extension; and
(g) a third elongate non-conductive layer comprising first and second partial layers and a lumen defined by the first and second elongate non-conductive layers and the first and second partial layers, wherein the lumen extends along a length of the elongate body.
10. The depth electrode of claim 9 , wherein the at least one first layer elongate conductive connector is a thin-film elongate conductive connector and the at least one second layer elongate conductive connector is a thin-film elongate conductive connector.
11. The depth electrode of claim 9 , wherein the second elongate non-conductive layer comprises at least one second layer opening defined in a proximal portion of the second elongate non-conductive layer, wherein a proximal portion of the at least one second layer elongate conductive connector is disposed through the at least one second layer opening and on and along a length of the fourth elongate non-conductive layer.
12. The depth electrode of claim 9 , further comprising:
(a) a fourth elongate non-conductive layer attached to the second elongate non-conductive layer;
(b) at least one fourth layer elongate conductive connector disposed on and along a length of the fourth elongate non-conductive layer, the at least one fourth layer elongate conductive connector comprising a fourth side extension extending transversely from a distal end of the at least one fourth layer elongate conductive connector toward a side of the fourth elongate non-conductive layer, wherein the at least one fourth layer elongate conductive connector is disposed between the second and fourth elongate non-conductive layers; and
(c) at least one third layer contact disposed around the elongate body, wherein the at least one third layer contact is electrically coupled with the fourth side extension.
13. The depth electrode of claim 12 , further comprising:
(a) a fifth elongate non-conductive layer attached to the first elongate non-conductive layer such that the at least one first layer elongate conductive connector is disposed between the first and fifth elongate non-conductive layers;
(b) at least one fifth layer elongate conductive connector disposed on and along a length of the fifth elongate non-conductive layer, the at least one fifth layer elongate conductive connector comprising a fifth side extension extending transversely from a distal end of the at least one fifth layer elongate conductive connector toward a side of the fifth elongate non-conductive layer; and
(c) at least one fifth layer contact disposed around the elongate body, wherein the at least one fifth layer contact is electrically coupled with the fifth side extension.
14. The depth electrode of claim 9 , wherein the lumen is constructed and arranged to allow for passage therethrough of a fluid, particulates, a procedural device, a stiffening device, a temperature probe, a steering mechanism, tissue, a treatment composition, or a medication.
15. A depth electrode comprising:
(a) an elongate body comprising a stacked configuration of at least two non-conductive thin film layers,
(b) a first elongate conductive thin film connector disposed on and along a length of a first layer of the at least two elongate non-conductive thin film layers, the first elongate conductive thin film connector comprising a first side extension extending transversely from a distal end of the first elongate conductive thin film connector toward a side of the elongate body;
(c) a second elongate conductive thin film connector disposed on and along a length of a second layer of the at least two elongate non-conductive thin film layers, the second elongate conductive thin film connector comprising a second side extension extending transversely from a distal end of the second elongate conductive thin film connector toward the side of the elongate body;
(d) a lumen defined within a first and second partial layers of a third layer of the at least two elongate non-conductive thin film layers and the first and second layers of the at least two elongate non-conductive thin film layers, wherein the lumen extends along a length of the elongate body;
(e) a first contact attached to the elongate body, wherein the first contact is electrically coupled with the first side extension; and
(f) a second contact attached to the elongate body, wherein the second contact is electrically coupled with the second side extension.
16. The depth electrode of claim 15 , wherein the elongate body has a substantially rectangular or substantially square cross-sectional shape.
17. The depth electrode of claim 15 , further comprising a liner disposed within the lumen.