Electrical components for physiological monitoring device
The present disclosure relates to a device configured to be adhered to the surface of a mammal for recording physiological signals. The device may include a housing enclosing a circuit board and a flexible wing extending from the housing. The device may include an electrode coupled to the flexible wing and an electrical trace for transmitting an electrical signal between the electrode and the circuit board. The electrical trace may have an insulator with a conductive material and resistors printed on the surface of the insulator. The trace layer may include conductive vias for transmitting the signal from a bottom of the trace layer to a top of the trace layer. The housing may include a battery having a battery terminal connector configured to provide electrical access to both terminals on a single side of the battery. The housing may include a floating trigger button.
1. An electronic device for monitoring physiological signals in a user, the device comprising:
a housing enclosing a circuit board;
a flexible wing extending from the housing and configured to conform to a surface of the user, the flexible wing having a bottom surface and a top surface;
an electrode coupled to the flexible wing configured to be positioned in conformal contact with the surface of the user to detect the physiological signals; and
a flexible trace layer coupled to the flexible wing and configured to transmit electrical signals from the electrode to the circuit board, the trace layer comprising a polymeric body extending from a first contact region positioned adjacent the electrode to a second contact region positioned adjacent the circuit board,
wherein the trace layer comprises a conductive material disposed on a first side of the polymeric body, the conductive material having a first conductance, and a resistor disposed on the first side of the polymeric body intersecting the conductive material between the first and second contact regions, the resistor having a second conductance, and
wherein the first conductance is greater than the second conductance such that the resistor applies a resistance between the first and second contact regions,
wherein the housing comprises a flexible frame surrounding the circuit board, the flexible frame forming an opening on a top side of the housing configured to face away from the surface of the user,
wherein the housing further comprises a rigid shell surrounding the flexible frame and forming a peripheral exterior of at least a portion of the housing, and
wherein a button is formed within the opening of the flexible frame, the button being configured to be manually depressed by a user into the flexible frame.
2. The electronic device of claim 1 , wherein the trace layer comprises one or more vias extending through the polymeric body of the trace layer and filled with a conductive material, the one or more vias electrically connecting the conductive material disposed on the first side of the polymeric body and a conductive material disposed on a second side of the polymeric body opposite the first side.
3. The electronic device of claim 2 , wherein the vias are positioned at the second contact region.
4. The electronic device of claim 1 , wherein the first contact region comprises a hole through the center of the region to allow moisture to transpire from hydrogel through the flexible wing.
5. The electronic device of claim 1 , wherein the first contact region is positioned over the electrode.
6. The electronic device of claim 1 , wherein the first contact region comprises a hole surrounding the electrode such that the electrode is arranged concentrically inside the hole, the electrode configured to electrically connect to a circumference of the hole.
7. The electronic device of claim 1 , wherein the first contact region is positioned on a bottom side of the trace layer and the second contact region is positioned on a top side of the trace layer.
8. The electronic device of claim 1 , the device comprising:
an adhesive layer coupled to the bottom surface of the flexible wing for adhering the electronic device to the user,
wherein the flexible wing and/or the adhesive layer comprises a therapeutic agent for delivery to the surface of the user, the adhesive layer being configured to allow the therapeutic agent to the be eluted through the adhesive layer to the surface of the user.
9. The electronic device of claim 8 , wherein the adhesive layer comprises a hydrocolloid.
10. The electronic device of claim 8 , wherein the therapeutic agent is configured to reduce skin irrigation, reduce itchiness, reduce bacterial growth, induce histamine release, and/or provide an anesthetic effect.
11. The electronic device of claim 8 , wherein the therapeutic agent is dissolved into the adhesive layer.
12. The electronic device of claim 8 , wherein the therapeutic agent is contained within a plurality of pockets disposed within one or more substrate layers of the flexible wing.
13. The electronic device of claim 12 , wherein one or more substrate layers of the flexible wing comprises pores configured to help transport the therapeutic agent through the flexible wing.
14. The electronic device of claim 8 , wherein the adhesive layer comprises one or more pores configured to help transport the therapeutic agent through the adhesive layer to the surface of the user.
15. An electronic device for monitoring physiological signals in a user, the device comprising:
a housing enclosing a circuit board;
a wing extending from the housing and configured to conform to a surface of the user, the wing having a bottom surface and a top surface;
an electrode coupled to the wing configured to be positioned in conformal contact with the surface of the user to detect the physiological signals; and
a trace layer coupled to the wing and configured to transmit electrical signals from the electrode to the circuit board, the trace layer comprising a polymeric body extending from a first contact region positioned adjacent the electrode to a second contact region positioned adjacent the circuit board,
wherein the trace layer comprises a conductive material disposed on a first side of the polymeric body, the conductive material having a first conductance, and a resistor disposed on the first side of the polymeric body intersecting the conductive material between the first and second contact regions, the resistor having a second conductance,
wherein the housing comprises a flexible frame surrounding the circuit board, the flexible frame forming an opening on a top side of the housing configured to face away from the surface of the user,
wherein the housing further comprises a rigid shell surrounding the flexible frame and forming a peripheral exterior of at least a portion of the housing, and
wherein a button is formed within the opening of the flexible frame, the button being configured to be manually depressed by a user into the flexible frame.
16. The electronic device of claim 15 , wherein the flexible frame is overmolded to the rigid shell.
17. The electronic device of claim 15 , wherein the button is a rigid element and the flexible frame joins the button to the rigid shell, the flexible frame forming a flexible border around the button such that the button is a floating button and pressing the button causes the flexible frame to flex.
18. The electronic device of claim 15 , wherein:
wherein the housing further comprises: a top housing coupled to a bottom housing, and a column extending downward from the top housing and a post extending upward from the bottom housing, the post being received in the column or the column being received in the post, wherein the column and post are press-fit together and configured to resist internal forces within the housing that promote separating the top housing from the bottom housing.
19. The electronic device of claim 18 , further comprising a spring positioned between a bottom surface of the bottom housing and the circuit board, the spring configured to subsume tolerance stack within the housing.
20. The electronic device of claim 19 , wherein the housing encloses a battery and the spring is further configured to bias traces electrically connected to battery terminals and a trace electrically coupled to the electrode into electrical contact with the circuit board.
21. The electronic device of claim 20 , wherein the electrical contact is made via a plurality of spring contacts.
22. The electronic device of claim 19 , wherein the spring is a wave spring.
23. The electronic device of claim 15 , further comprising a spacer positioned between the circuit board and a battery, the spacer being configured to maintain the battery at a constant separation distance from the circuit board.
24. The electronic device of claim 15 , further comprising foam positioned between a bottom surface of the housing and the circuit board, the foam configured to subsume tolerance stack within the housing.
25. The electronic device of claim 1 , wherein the circuit board comprising a trigger input configured to be manually actuated by a user for indicating a trigger event, the opening being positioned over the trigger input, and the button being configured to be manually depressed to actuate the trigger input.