Embodiments provide physiological measurement systems, devices and methods for continuous health and fitness monitoring. A wearable strap may detect reflected light from a user's skin, where data corresponding to the reflected light is used to automatically and continually determine a heart rate of the user. The wearable strap may monitor heart rate data including heart rate variability, resting heart rate, and sleep quality. The systems may include a processing module that generates an indicator of physical recovery based on the heart rate data. The recovery indicator may be used to determine strain related to an exercise routine, qualitative information on the user's health, whether to alter a user's exercise plan, and so forth.

The following relates generally to measuring a patients O.sub.2 level with a mote implanted in the patient's tissue. For example, a mote implanted in a patients tissue may be powered by ultrasound (US) signals generated by an ultrasound interrogator that is external to the patient. Components on the mote may be duty cycled off to advantageously decrease power consumption. A luminescence sensor on the mote may be used to measure the O.sub.2 level, and the luminescence sensor may be optically isolated from the patients tissue by an opaque material such as black silicon.

A system and method for mapping metabolic data of a heart. The system has a light source directing light onto the heart, one or more lenses for focusing an image of the heart, and a fluorescent detector receiving the focused image and generating transients and/or waves to map metabolic cardiac data.

An electronic device includes a display panel and a biometric information module. The display panel includes red-light emitting elements, green-light emitting elements, blue-light emitting elements, and light receiving elements that are spaced from each other. The blue-light emitting elements emit blue light in a biometric information mode of the electronic device. The light receiving elements receive at least one of red light and green light in the biometric information mode of the electronic device after the blue-light emitting elements have emitted the blue light. The light receiving elements generate electrical signals in response to the at least one of the red light and the green light. The biometric information module is electrically connected to the display panel and generates biometric information about a skin of a user based on the electrical signals.

A method of estimating hemoglobin concentration, may comprise: receiving a skin image of a subject; determining a formula into which the skin image is introduced; and estimating a hemoglobin concentration of the subject by introducing the skin image into the determined formula.

A method of fluid delivery into a person's skin includes receiving a fluid delivery time indicating the amount of time required for a delivery of the fluid through a microneedle array of the intradermal fluid delivery device into the person's skin. The processor repeatedly turns the air pump on or off, for the fluid to gradually be injected into the person's skin. The method controls the total fluid delivery time and/or the granularity of the fluid delivery. The total fluid delivery time may be set to T, and the time period T may be divided into smaller periods t.sub.1 to t.sub.n, where the fluid may be administered in a period t1, the fluid delivery may then be stopped for a period t2, followed by another fluid delivery period, etc. The periods t1 to tn may be the same or of different lengths.

The present invention is a Miniature Vein Enhancer, for use in imaging the subcutaneous veins of a target area of a patient by a practitioner. The miniature vein enhancer includes a Miniature Projection Head that is secured to a tourniquet, where the tourniquet may be mounted to the bicep of a patient. The Miniature Projection Head includes a housing, and apparatus that images subcutaneous veins of the target area, and projects the image(s) of the veins onto the target area to overlie the subcutaneous veins, which aids the practitioner in pinpointing a vein location for a venipuncture procedure such as an intravenous drip, blood test, and the like.

Embodiments described herein are directed to an automatic fluid measurement system including a fluid collection system configured to drain a fluid from a patient, and a short wave infrared imaging system configured to image the collection container to provide a high contrast, high resolution image and determine a volume of fluid disposed therein. In an embodiment, the system can determine a fluid flow rate, or determine a presence or concentration of foreign particles within the collection container. One or more cameras can image different portions of the container, or can include different focal lengths. Images of the collection container can be communicated to remote computing devices for further analysis.

A process for utilizing a diode laser to illuminate at least one A-delta nerve fiber and at least one C nerve fiber to produce a mechanistic biomarker for measuring efficacy of a pain therapy.

Disclosed herein are methods of vascular and structural imaging using imaging systems and methods described, the methods comprising producing an image of the vasculature or structure by imaging fluorescence using an imaging system, the system comprising: i) one or more detectors configured to form a fluorescence image of the sample and form a visible image of the sample; ii) a light source configured to emit an excitation light to induce fluorescence from the sample; and iii) a plurality of optics arranged to: direct the excitation light toward the sample; and direct a fluorescent light and a visible light from the sample to the detector; wherein the excitation light and the fluorescence light are directed substantially coaxially.