Embedded thermocouple in denervation flex circuit
First Claim
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1. A medical device for sympathetic nerve ablation, comprising:
- a catheter shaft;
an expandable balloon disposed on the catheter shaft, the expandable balloon being capable of shifting between an unexpanded configuration and an expanded configuration; and
a plurality of elongate electrode assemblies each constructed as a flexible circuit having a plurality of layers comprising a base layer facing the expandable balloon and an insulating layer, the plurality of elongate electrode assemblies attached to an outer surface of the expandable balloon;
wherein each of the plurality of elongate electrode assemblies includes a temperature sensor and a sensor ground pad, wherein the temperature sensor and the sensor ground pad are embedded within the plurality of layers, between the base layer and the insulating layer and wherein the sensor ground pad is between the temperature sensor and the insulating layer.
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Abstract
A medical device for sympathetic nerve ablation may include a catheter shaft, an expandable member disposed on or coupled to the catheter shaft, and a plurality of elongate electrode assemblies each constructed as a flexible circuit having a plurality of layers. The expandable member may be configured to shift between an unexpanded configuration and an expanded configuration. The plurality of electrode assemblies may be disposed on an outer surface of the expandable member. Each of the plurality of electrode assemblies may include a temperature sensor within the plurality of layers.
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Citations
20 Claims
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1. A medical device for sympathetic nerve ablation, comprising:
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a catheter shaft; an expandable balloon disposed on the catheter shaft, the expandable balloon being capable of shifting between an unexpanded configuration and an expanded configuration; and a plurality of elongate electrode assemblies each constructed as a flexible circuit having a plurality of layers comprising a base layer facing the expandable balloon and an insulating layer, the plurality of elongate electrode assemblies attached to an outer surface of the expandable balloon; wherein each of the plurality of elongate electrode assemblies includes a temperature sensor and a sensor ground pad, wherein the temperature sensor and the sensor ground pad are embedded within the plurality of layers, between the base layer and the insulating layer and wherein the sensor ground pad is between the temperature sensor and the insulating layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A medical device for sympathetic nerve ablation, comprising:
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a catheter shaft; an expandable member coupled to the catheter shaft, the expandable member being capable of shifting between an unexpanded configuration and an expanded configuration; and a plurality of elongate electrode assemblies each constructed as a flexible circuit having a length and a plurality of layers comprising a base layer facing the expandable member and an insulating layer, the plurality of elongate electrode assemblies attached to an outer surface of the expandable member; wherein each of the plurality of elongate electrode assemblies includes a sputtered thermocouple and a sensor ground pad, wherein the sputtered thermocouple and the sensor ground pad are embedded within the plurality of layers between the base layer and the insulating layer, wherein the sensor ground pad is between the sputtered thermocouple and the insulating layer, and wherein the sputtered thermocouple is positioned between at least one active electrode and at least one ground electrode. - View Dependent Claims (11, 12, 13, 14)
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15. A medical device for sympathetic nerve ablation within a body passageway, comprising:
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a catheter shaft; an elongate balloon coupled to the catheter shaft, the elongate balloon being capable of shifting between an unexpanded configuration and an expanded configuration; and a plurality of elongate electrode assemblies each constructed as a flexible circuit having a plurality of layers comprising a base layer facing the elongate balloon and an insulating layer, the plurality of elongate electrode assemblies being bonded to an outer surface of the elongate balloon; wherein each of the plurality of elongate electrode assemblies includes a temperature sensor and a sensor ground pad, wherein the temperature sensor and the sensor ground pad are embedded within the plurality of layers between the base layer and the insulating layer, wherein the sensor ground pad is between the temperature sensor and the insulating layer, and wherein the temperature sensor comprises less than five percent of a maximum thickness of each of the plurality of elongate electrode assemblies. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification