A method for measuring a glomerular filtration rate in a mammalian kidney comprises a source of reporter and marker fluorescent molecules. The fluorescent molecules are introduced into the blood stream of a mammalian subject. Over a period of time, a measurement of the intensities of the reporter and marker fluorescent molecules is taken. A ratio is calculated to determine the health of the subject's kidney. This method measures volume of plasma distribution based on a fluorescence of a marker molecule relative to a fluorescence of a reporter molecule.

A device for collecting urine discharged from a body of a user includes a fluid collection assembly having at least one layer for drawing urine discharged from the body into an interior cavity, an external covering that covers a portion of the at least one layer, and at least one fenestration for receiving urine, wherein the fenestration is a portion of the fluid collection assembly that is uncovered by the external covering. The device further includes a cap enclosing a first end of the assembly, a tube having a first end in fluid communication with the cap, and a shape retaining element configured to conform the assembly to a curved configuration and maintain the curved configuration until the configuration is adjusted. The assembly is configured to be disposed against the body of the user, with the at least one fenestration in operative relation with a urethral opening of the user.

Example systems and techniques for denervation, for example, renal denervation. In some examples, a processor determines one or more tissue characteristics of tissue proximate a target nerve and a blood vessel. The processor may generate, based on the one or more tissue characteristics, an estimated volume of influence of denervation therapy delivered by a therapy delivery device disposed within the blood vessel. The processor may generate a graphical user interface including a graphical representation of the tissue proximate the target nerve and the blood vessel and a graphical representation of the estimated volume of influence.

Fluorescence imaging with reduced fixed pattern noise is disclosed. A method includes actuating an emitter to emit a plurality of pulses of electromagnetic radiation and sensing reflected electromagnetic radiation resulting from the plurality of pulses of electromagnetic radiation with a pixel array of an image sensor. The method includes reducing fixed pattern noise in an exposure frame by subtracting a reference frame from the exposure frame. The method is such that at least a portion of the plurality of pulses of electromagnetic radiation emitted by the emitter comprises electromagnetic radiation having a wavelength from about 795 nm to about 815 nm.

An oxygen measurement device constituting an oxygen measurement system includes a urethral catheter and an oxygen sensor main body. The urethral catheter has a shaft in which a urethral catheter lumen that enables circulation of urine flowed in via a urethral catheter port from inside a bladder is formed; and has a hub in which a urine lumen that is provided at a proximal end of the shaft and communicates with the urethral catheter lumen is formed. The oxygen sensor main body is provided on the hub in a manner capable of being brought into contact with urine circulating in the urine lumen, and detects oxygen in the urine.

A urinalysis cassette and system that includes a toilet, into which a urinalysis cassette is inserted. The cassette is comprised of a roll of color-change-reagent strips. Each strip includes a plurality of strip sections wherein an absorbent material is imbued with color-change reagent, or onto which one or more color-change reagents are dispensed. The color-change-reagent strips are consecutive and contiguous on the roll. A cassette includes two spools arranged such that when the spools turn, the reagent strip moves from a first (source spool) to a second (waste spool). The section of the reagent strip that is between the two spools may be exposed to a urine specimen. The absorbent-material strips that have been exposed to both a urine specimen and a color-change reagent may undergo a chemical reaction. Selective-lighting illumination may be applied to absorbent-material strips that have undergone such chemical reactions to measure reflectivity of certain color wavelengths. This measurement may be expressed in terms of a digital readout, which may be displayed on a user interface.

A heart monitoring system for a person includes one or more wireless nodes; and wearable appliance in communication with the one or more wireless nodes, the appliance monitoring vital signs.

According to some embodiments, systems and methods for rapid evaporation of liquid phase samples are provided. The method includes directing liquid samples to a thermal evaporation ionizing device, thermally evaporating the liquid samples to create gaseous molecular ions, and directing the gaseous molecular ions to an ion analyzer to analyze and provide information regarding the chemical composition of the liquid samples.

According to some embodiments, systems and methods for rapid evaporation of liquid phase samples are provided. The method includes directing liquid samples to a thermal evaporation ionizing device, thermally evaporating the liquid samples to create gaseous molecular ions, and directing the gaseous molecular ions to an ion analyzer to analyze and provide information regarding the chemical composition of the liquid samples.

Method and system for treating a patient using an inflatable device. A removal device may be used to remove the inflatable device from the body. The removal device can have at least one manually-actuatable member and at least two opposing jaws at a distal end. At least one of the at least two jaws can be movable by actuation of the at least one manually-actuatable member. At least one of the at least two jaws can have a puncturing member.