The described systems and methods determine a driver's fitness to safely operate a moving vehicle based at least in part upon observed impairment patterns. A smart ring, wearable on a user's finger, continuously monitors impairment levels. This impairment data, representing impairment patterns, can be utilized, in combination with driving data, to train a machine learning model, which will predict the user's level of risk exposure based at least in part upon observed impairment patterns. The user can be warned of this risk to prevent them from driving or to encourage them to delay driving. In some instances, the disclosed smart ring system may interact with the user's vehicle to prevent it from starting while the user is in a state of impairment induced by substance intoxication.

Systems and methods for partial aortic occlusion are provided. The system may include a catheter having an expandable aortic blood flow regulation device disposed on the distal end of the catheter for placement within an aorta of a patient, and a catheter controller unit that causes the device to expand and contract to restrict blood flow through the aorta. The system also may include sensors for measuring blood pressure distal and proximal to the expandable device. The system further may include non-transitory computer readable media having instructions stored thereon, wherein the instructions, when executed by a processor coupled to the sensors, cause the processor to estimate aortic blood flow based on the measured blood pressures and corresponding waveforms, compare the estimated aortic blood flow with a target aortic blood flow range, generate an alert if the estimated aortic blood flow falls outside the target aortic blood flow range, and cause the catheter controller unit to adjust expansion and contraction of the expandable device to adjust an amount of blood flow through the aorta if the estimated aortic blood flow falls outside the target aortic blood flow range.

Embodiments for protecting low-pressure blood pressure sensors in high-pressure fluid flow applications by equalizing pressure on both sides of a pressure sensor's diaphragm during high pressure are disclosed. A sensor protection device may include a pressure sensor assembly, a housing, and a plunger assembly. During low pressure, fluid in the primary flow path can flow through the housing, transferring its pressure to a first side of the diaphragm; the plunger assembly can prevent fluid flow into a secondary flow path in the housing, transferring atmospheric pressure to a second side of the diaphragm. During high pressure, fluid can still flow through the primary flow path, and the plunger assembly may now allow fluid flow into the secondary flow path, transferring pressure from the same fluid to the second side of the diaphragm to equal pressure across the diaphragm. The plunger assembly may automatically transition between low- and high-pressure configurations.

A charging station for providing power to a physiological monitoring device can include a charging bay and a tray. The charging bay can include a charging port configured to receive power from a power source. The tray can be positioned within and movably mounted relative to the charging bay. The tray can be further configured to secure the physiological monitoring device and move between a first position and a second position. In the first position, the tray can be spaced away from the charging port, and, in the second position, the tray can be positioned proximate the charging port, thereby allowing the physiological monitoring device to electrically connect to the charging port.

Methods for training a model for use in monitoring a health parameter in a person are disclosed. In an embodiment, a method involves monitoring a blood pressure of a person using a control blood pressure monitoring system, receiving control data that corresponds to the monitoring using the control blood pressure monitoring system, receiving stepped frequency scanning data that corresponds to radio waves that have reflected from blood in a blood vessel of the person, wherein the stepped frequency scanning data is collected through multiple receive antennas over a range of frequencies, generating training data by combining the control data with the stepped frequency scanning data in a time synchronous manner, and training a model using the training data to produce a trained model, wherein the trained model correlates stepped frequency scanning data to values that are indicative of a blood pressure of a person.

A smart watch comprises a watch head and a watch strap. The watch head comprises: a first electrode for contacting skin of a watch-wearing wrist; a second electrode for contacting skin of a non-watch-wearing wrist, wherein both the first electrode and the second electrode are electrically connected with a main control unit of the smart watch, so that the main control unit calculates an electrocardiogram according to bioelectric signals detected by the first electrode and the second electrode; and an air bag for contacting the skin of the watch-wearing wrist, wherein the air bag is respectively connected with an air pump and a pressure sensor, and the pressure sensor is connected with the main control unit, so that the main control unit calculates blood pressure according to a detection signal of the pressure sensor.

The present technology relates to intracardiac pressure monitoring devices, and associated systems and methods. In some embodiments, the present technology includes a device for monitoring pressure within a patient's heart. The device can include a pressure sensor configured to reside within a first chamber of a heart of a patient, and a pressure transmission element configured to extend from the first chamber through a septal wall to a second chamber of the heart of the patient. When the device is implanted in the patient's heart, the pressure transmission element is configured to transmit pressure from the second chamber to the pressure sensor residing within the first chamber.

A sensor apparatus includes at least one substrate layer of an elastically deformable material, the substrate layer extending longitudinally between spaced apart ends thereof. A conductive layer is attached to and extends longitudinally between the spaced apart ends of the at least one substrate layer. The conductive layer includes an electrically conductive material adapted to form a strain gauge having an electrical resistance that varies based on deformation of the conductive layer in at least one direction.

A wearable device includes a watch face, a watch band, and a compression band, where the watch face includes a bezel, a bottom cover, and a blood pressure measurement assembly, the bottom cover is provided with an outer plug-connection port, an flow passage, and an inner plug-connection port that successively communicate, the outer plug-connection port is closer to the bezel than the inner plug-connection port, the blood pressure measurement assembly is accommodated in a watch face inner cavity, and an air nozzle of the blood pressure measurement assembly mutually communicates with the inner plug-connection port; and the watch band is connected to the bezel, the compression band and the watch band are stacked, and an air nozzle of the compression band mutually communicates with the outer plug-connection port.

A bandage for a medical sensor or system is described, the bandage including plural transparent wings surrounding at least one medical sensor, the plural transparent wings including an adhesive on a first side and including apertures therethrough configured to provide stretchability in at least one direction to the sides and away from the at least one medical sensor.