Sweat sensing devices with sensor abrasion protection
First Claim
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1. A wearable sweat sensing device, comprising:
- a sensor configured to measure a characteristic of an analyte in a sweat sample, and when the device is placed on a device wearer'"'"'s skin, the sensor is configured to be located at a first distance from an aligned sweat gland located in the device wearer'"'"'s skin, and at a second distance from an unaligned sweat gland located in the device wearer'"'"'s skin, wherein the first distance is less than the second distance;
an abrasion protector supporting the sensor, wherein the abrasion protector is configured to reduce a volume of sweat required to fill between the wearer'"'"'s skin and the sensor, wherein the abrasion protector is configured to be located between the sensor and the device wearer'"'"'s skin, wherein the abrasion protector includes one or more channels fluidically connecting the sensor with the aligned sweat gland, and wherein the one or more channels have lengths between the first distance and the second distance; and
a wicking material configured to be located between the abrasion protector and the device wearer'"'"'s skin, wherein the wicking material is configured to reduce a volume of sweat required to fill between the wearer'"'"'s skin and the sensor;
wherein the wicking material includes a plurality of blocking areas configured to resist a flow of sweat, and a plurality of flow areas configured to allow a flow of sweat, and wherein one or more of the plurality of flow areas fluidically connect the sensor with the aligned sweat gland.
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Abstract
The disclosed invention provides a sweat sensing device configured with self-aligned sweat stimulation means to provide adequate sweat generation for continuous monitoring of sweat. The disclosed device includes one or more analyte-specific sweat sensors that self-align with sweat glands. In one embodiment, the sweat sensing device includes means to protect the self-aligning sensors from abrasion against the skin or device components. In another embodiment, the device includes prolonged sweat stimulation for the self-aligning sensors through diffusion of a sweat stimulating compound into the skin.
130 Citations
16 Claims
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1. A wearable sweat sensing device, comprising:
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a sensor configured to measure a characteristic of an analyte in a sweat sample, and when the device is placed on a device wearer'"'"'s skin, the sensor is configured to be located at a first distance from an aligned sweat gland located in the device wearer'"'"'s skin, and at a second distance from an unaligned sweat gland located in the device wearer'"'"'s skin, wherein the first distance is less than the second distance; an abrasion protector supporting the sensor, wherein the abrasion protector is configured to reduce a volume of sweat required to fill between the wearer'"'"'s skin and the sensor, wherein the abrasion protector is configured to be located between the sensor and the device wearer'"'"'s skin, wherein the abrasion protector includes one or more channels fluidically connecting the sensor with the aligned sweat gland, and wherein the one or more channels have lengths between the first distance and the second distance; and a wicking material configured to be located between the abrasion protector and the device wearer'"'"'s skin, wherein the wicking material is configured to reduce a volume of sweat required to fill between the wearer'"'"'s skin and the sensor;
wherein the wicking material includes a plurality of blocking areas configured to resist a flow of sweat, and a plurality of flow areas configured to allow a flow of sweat, and wherein one or more of the plurality of flow areas fluidically connect the sensor with the aligned sweat gland. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification