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US 12,575,775 B2Granted
Intra-body electrode with a poly(3,4-ethylenedioxythiophene)-based coating
AssigneeMedtronic, Inc.
InventorAlan Shi
Life of this patent
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Abstract
Embodiments in accordance with the present disclosure are directed to an apparatus comprising an intra-body electrode, and a poly(3,4-ethylenedioxythiophene) (PEDOT)-based coating. The PEDOT-based coating is on a surface of the intra-body electrode. And, the PEDOT-based coating includes a PEDOT-backbone doped with counter ions and cross-linked to a photoreactive polymer and a photoreactive-hydrophilic polymer.
Claims20
An apparatus, comprising:
- an intra-body electrode;
- and
- a poly(3,4-ethylenedioxythiophene) (PEDOT)-based coating on a surface of the intra-body electrode, the PEDOT-based coating including a PEDOT-backbone doped with tetrafluoroborate (TFB) counter ions and cross-linked to a photoreactive polymer and a photoreactive-hydrophilic polymer;
- wherein the intra-body electrode with the PEDOT-based coating is configured to provide a capacitance of at least sixty microfarad per square millimeter (μF/mm2) and to exhibit a relative difference in impedance magnitude at ten kilohertz (kHz) and at ten Hz of five percent or less.
1 more element
An apparatus, comprising:
- an intra-body electrode;
- and
- a poly(3,4-ethylenedioxythiophene) (PEDOT)-based coating on a surface of the intra-body electrode, the PEDOT-based coating including a PEDOT-backbone doped with tetrafluoroborate (TFB) counter ions, the intra-body electrode with the PEDOT-based coating configured to provide a charge storage capacity of at least 360 microcoulomb per square millimeter (μC/mm2) and up to 902 μC/mm2.
A method, comprising:
- a. adding a layer of poly(3,4-ethylenedioxythiophene) (PEDOT)-based polymer on an intra-body electrode using a solution, the layer of PEDOT-based polymer including PEDOT doped with counter ions and cross-linked to a photoreactive polymer, wherein the counter ions include tetrafluoroborate (TFB);
- b. incorporating a photoreactive-hydrophilic polymer with the layer of PEDOT-based polymer;
- and
- c. curing the layer of PEDOT-based polymer to the photoreactive-hydrophilic polymer to form a PEDOT-based coating on the intra-body electrode, the PEDOT-based coating including the PEDOT doped with the counter ions and cross-linked to the photoreactive polymer and the photoreactive-hydrophilic polymer;
- d. wherein the intra-body electrode with the PEDOT-based coating is configured to provide a capacitance of at least sixty microfarad per square millimeter (μF/mm2) and to exhibit a relative difference in impedance magnitude at ten kilohertz (kHz) and at ten Hz of five percent or less.
2 more elements
Dependencies are inferred from the claim text.