Method for constructing physiological electrode assembly with sewn wire interconnects
A method for constructing a stress-pliant physiological electrode assembly is provided. An electrode backing is formed from a stretchable woven textile material compatible to contact the skin on at least one surface. A pair of flexile wires is provided to serve as electrode circuit trace and electrode signal pickup. At least one of the flexile wires is sewn into the textile material which provides a stress-pliant malleability. Each of the flexile wires has an electrically-contacting area functioning for electric signal pickup. The electrically-contacting area may be sewn into the woven textile or affixed to the woven textile via conductive adhesives. The stress-pliant physiological electrode assembly is applicable for a wide array of physiological monitors, including ECG monitors, and especially is suitable for long-term wear. The method disclosed is both environmentally friendly and low-cost.
1. A method for constructing physiological electrode assembly with sewn wire interconnects, comprising:
providing two flexile wires, a first further flexile wire other than the two flexile wires, and a second further flexile wire other than the two flexile wires and the first further flexile wire;
forming an electrode backing from a stretchable woven textile material, the electrode backing having a proximal electrode backing end and a distal electrode backing end, wherein the proximal electrode backing end and the distal electrode backing end each comprise a contact side adapted to contact skin of a patient;
forming a set of electrical contact surfaces configured to interface with a monitor recorder on a side of proximal electrical backing end opposite the contact side of the proximal electrode backing end;
sewing the two flexile wires into the stretchable woven textile material and connecting one end of each of the flexile wires to one of the electrical contact surfaces;
sewing the first further flexile wire into the stretchable woven textile and positioning one wire end of the first further flexile wire on the contact side of the distal electrode backing end;
forming an electrocardiographic electrode signal pickup from the first further flexile wire end positioned on the contact side of the distal electrode backing end;
terminating other end of the first further flexile wire as an electrical connection to connect to an end of one of the flexile wires that is not connected to one of the electrical contact surfaces;
sewing a second further flexile wire into the stretchable woven textile material and positioning one wire end of the second further flexile wire on the contact side of the proximal electrode backing end;
forming a further electrocardiographic electrode signal pickup from the second further flexile wire end positioned on the contact side of the proximal electrode backing end; and
terminating other end of the second further flexile wire as another electrical connection to connect to an end of a second one of the flexile wires that is not connected to one of the electrical contact surfaces.
2. The method according to claim 1 , wherein the electrical contact surfaces are formed from additional flexile wires.
3. The method according to claim 2 , further comprising:
sewing the additional flexile wires into the proximal electrical backing end to form the electrical contact surfaces.
4. The method according to claim 3 , wherein the additional flexile wires are over-stitched into the proximal electrode backing end.
5. The method according to claim 1 , further comprising:
securing a battery to the electrode backing using a plurality of additional flexile wires.
6. The method according to claim 5 , further comprising:
sewing a plurality of additional flexile wire interconnects into the stretchable woven textile material;
connecting one of the ends of each of the plurality of the additional flexile wire interconnects to the battery and a second end of each of the plurality of the additional flexile wire interconnects to one of the electrical contact surfaces that is not connected to one of the flexile wire interconnects.
7. The method according to claim 1 , further comprising:
embedding the flexile wire end positioned on the contact side of the distal electrode backing end in an electrically conductive adhesive; and
embedding the further flexile wire end positioned on the contact side of the proximal electrode backing end in the electrically conductive adhesive.
8. The method according to claim 1 , wherein the flexile wire and the further flexile wire each comprise a conductor core and at least one layer of an insulator surrounding the conductor core.
9. The method according to claim 8 , further comprising:
removing at least a portion of the at least one layer of the insulator surrounding the one wire end of the flexile wire.
10. The method according to claim 9 , wherein the removing of the at least the portion of the insulator is performed by at least one of heating, a laser, cutting, abrasion, and stripping.