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US 2021/0259589 A1Published application
Wearable systems, devices and methods for measurement and analysis of body fluids
AssigneeNix, Inc.
InventorsKenneth RITSHER, Shawn MISHRA, Brett COCHRAN, Daniel TONDERYS, Michael ROBERTS, Meridith Unger CASS
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Abstract
Systems, devices and methods are described herein for various embodiments of a sample analysis system that is worn by a user, the sample analysis system configured to collect a sample of bodily fluid, and measure and analyze the bodily fluid to determine a property of the bodily fluid and/or a health parameter (e.g., degree of hydration, electrolyte losses, perspiration rate, etc.) of the user.
Claims30
A method, comprising:
- collecting a sample of bodily fluid in a sample collection region of a wearable device from a source of bodily fluid;
- directing a portion of the sample of bodily fluid from the sample collection region to a set of electrodes, the set of electrodes including an excitation electrode and a sensing electrode;
- applying an excitation signal through the portion of the sample of bodily fluid:
- sensing a response signal in response to the excitation signal;
- measuring, based on the response signal, an impedance associated with the portion of the sample of bodily fluid;
- and
- determining, based on the impedance, a property of the source of bodily fluid.
4 more elements
A wearable apparatus, comprising:
- a sample collection region having an inlet and configured to receive, via the inlet, an initial volume of bodily fluid;
- an access port in fluidic communication with the sample collection region;
- and
- a flow channel, in fluid communication with the access port and configured to direct a portion of the initial volume of bodily fluid towards a set of electrodes,
- the set of electrodes including an excitation electrode and a sensing electrode, the excitation electrode configured to apply an excitation signal to the portion of the initial volume of bodily fluid, and the sensing electrode configured to receive a response signal from the portion of the initial volume of bodily fluid in response to the excitation signal, the sensing electrode configured to transmit the response signal to a processor to calculate an impedance associated with the portion of the initial volume of bodily fluid.
2 more elements
A system, comprising:
- a memory storing a set of instructions:
- a processor coupled to the memory, and configured to execute the instructions stored in the memory;
- and
- a wearable device including
- a sample collection region configured to receive an initial volume of bodily fluid;
- an access port in fluidic communication with the sample collection region;
- and
- a flow channel, in fluid communication with the access port and configured to direct a portion of the initial volume of bodily fluid towards a set of electrodes,
- the set of electrodes, including an excitation electrode and a sensing electrode, the excitation electrode configured to apply an excitation signal to the portion of the initial volume of bodily fluid, and the sensing electrode configured to receive a response signal from the portion of the initial volume of bodily fluid and in response to the excitation signal.
6 more elements
A device for measuring a biophysical property of a sample of bodily fluid, comprising:
- an interface layer including a liner configured to be released to affix the device on a body of a user;
- an adhesive layer having a predefined thickness, including an adhesive proximal surface to be affixed on the body of the user, and including an adhesive distal surface to be affixed to the access port layer, the adhesive layer defining an opening via which to receive the sample of bodily fluid;
- an access port layer including a proximal surface configured to be affixed to the distal surface of the adhesive layer, the adhesive layer and the access port layer collectively defining a sample collection region, and a distal surface, the access port layer defining an access port to urge a flow of bodily fluid from the sample collection region;
- a channel layer defining a flow channel configured to direct the flow of the bodily fluid from the sample collection region, the flow channel including a test region configured to test a portion of the sample of bodily fluid for a property of the bodily fluid;
- and
- an electrode layer configured to define a set of electrodes and to interface with the flow channel at the test region, the set of electrodes including (i) an excitation electrode configured to apply an excitation signal to the portion of the sample of bodily fluid at the test region, and (ii) a sensing electrode configured to receive a response signal from the portion of the sample of bodily fluid, in response to the applying the excitation signal at the test region, the set of electrodes further including terminal connections to provide electrical communication between the set of electrodes and a processor to which to send the response signal to be processed.
3 more elements
Dependencies are inferred from the claim text.