A prosthesis for monitoring a characteristic of flow includes a first tubular prosthesis having a lumen and a sensor for detecting the characteristic of flow through the lumen. The sensor may be covered with another tubular prosthesis or by a layer of material in order to insulate the sensor from the fluid flow. A pocket may be formed between the tubular prosthesis and the adjacent layer of material or prosthesis and the sensor may be disposed in the pocket.

A method and apparatus for testing relating to the technical field of test. The method includes: in response to a situation that the two hands of a to-be-tested user are placed in a preset interaction area of the test apparatus, performing the following test steps: transmitting an electric signal to the two hands, and receiving a feedback signal of the two hands, wherein the feedback signal is used for generating electrical impedance information of the two hands; testing a bioelectric signal of the two hands, wherein the bioelectric signal is used for generating electrocardio information of said user; emitting light having a preset wavelength to the two hands, and receiving reflected light by using a photosensitive sensor in the test apparatus, wherein the reflected light is used for generating blood flow-related index information of said user.

A spectrally encoded flow cytometry (SEFC) technique for imaging blood in the microcirculation. Since the dependency of one of the axes of the image on time prevents effective quantification of essential clinical parameters, the optical path in an SEFC system is split into two parallel imaging lines, followed by data analysis for recovering the flow speed from the multiplexed data. The data analysis may be auto-correlation of a pair of images obtained from a sequence of images of the imaged blood vessel.

Described herein are systems, devices, and methods for energy-efficient operation of wireless devices. In some variations, a wireless monitor may comprise a sensor configured to measure a physiological parameter of a patient at a first resolution. A processor may be configured to generate physiological parameter data based on the measured physiological parameter of the patient at the first resolution. The sensor may be configured to measure the physiological parameter of the patient at a second resolution based at least in part on the physiological parameter data.

Disclosed is an optical coherence tomography (OCT) system according to an exemplary embodiment of the present disclosure. The OCT system may include: a light source unit generating light; an optical interferometer including an optical coupler splitting the light generated by the light source unit into first distribution light and second distribution light, a reference arm reflecting the first distribution light, a sample arm reflecting the second distribution light, and an optical detector detecting the light reflected by the reference arm and the sample arm; an OCT catheter including an optical fiber having a shape in which the optical fiber is insertable into at least a part of a human body and is rotatable and discharging the light to a tissue and collecting OCT data for the tissue; an OCT engine including a processor and a storage unit and processing the OCT data collected by the OCT catheter; and an OCT controller connected to a proximal end of the OCT catheter and controlling rotation of the OCT catheter.

A biological information detection device includes: a video capture unit, a blood flow analysis unit, a local pulse wave detection unit, a pulse wave propagation velocity calculation unit, and a blood pressure estimation unit. The video capture unit obtains video information on a face of a living body. The blood flow analysis unit analyzes video data of at least three skin areas in the video information, as blood flow information. The local pulse wave detection unit is provided for each skin area to calculate pulse information based on the blood flow information sequenced chronologically. The pulse wave propagation velocity calculation unit calculates a pulse wave propagation velocity based on a phase difference between pieces of the pulse information at each skin area calculated by the local pulse wave detection unit. The blood pressure estimation unit estimates blood pressure based on the pulse wave propagation velocity.

An ultrasonic diagnosis system according to an embodiment of the present disclosure includes a plurality of ultrasonic output patches configured to be attachable to different body parts, a data receiving unit configured to receive data transmitted from the plurality of ultrasonic output patches, a processing unit configured to acquire an imaging result related to the body part by processing the data, and an output unit configured to output the imaging result related to the body part, in which the ultrasonic output patch includes a multichannel ultrasonic transducer array configured to output imaging ultrasonic waves toward the body part and receive the reflected ultrasonic waves, a signal processing module configured to process a signal transmitted to or received from the multichannel ultrasonic transducer array, and a communication module configured to transmit a signal processing result, which is acquired by the signal processing module, to the data receiving unit.

Methods, systems, and devices for leveraging data from multiple data sources are described. A method includes receiving physiological data associated with a user from a wearable device and receiving additional data from an external device different from the wearable device, the additional data including at least data associated with characteristics of an environment associated with the user. The method further includes identifying one or more relationships between the collected physiological data and the characteristics of the environment associated with the user, and causing a graphical user interface (GUI) of a user device to display an indication of the one or more relationships, a message associated with the one or more relationships, or both. In some cases, the method includes causing the GUI to display instructions for selectively adjusting the one or more characteristics of the environment associated with the user based on the one or more relationships.

Methods, systems, and devices for leveraging data from multiple data sources are described. A method includes receiving physiological data associated with a user from a wearable device and receiving additional data from an external device different from the wearable device, the additional data including at least data associated with characteristics of an environment associated with the user. The method further includes identifying one or more relationships between the collected physiological data and the characteristics of the environment associated with the user, and causing a graphical user interface (GUI) of a user device to display an indication of the one or more relationships, a message associated with the one or more relationships, or both. In some cases, the method includes causing the GUI to display instructions for selectively adjusting the one or more characteristics of the environment associated with the user based on the one or more relationships.

Methods, systems, and devices for temperature analysis are described. The method may include receiving physiological data associated with a user collected via a first set of sensors of a wearable device. The physiological data may include skin temperature data. The method may include receiving surrounding temperature data associated with an environment surrounding the user. The surrounding temperature data may be collected via the first set of sensors, a second set of sensors, or both. The method may additionally include identifying one or more physiological characteristics associated with the user based at least in part on a comparison of the skin temperature data and the surrounding temperature data, and causing a graphical user interface (GUI) of a user device to display an indication of the one or more physiological characteristics, a message or alert associated with the one or more physiological characteristics, or both.