An oximeter probe determines an oxygen saturation for the tissue and determines a quality value for the oxygen saturation and associated measurements of the tissue. The quality value is calculated from reflectance data received at the detectors of the oximeter probe. The oximeter probe then displays a value for the oxygen saturation with the error value to indicate a quality level for the oxygen saturation and associated values used to calculate oxygen saturation.

The present invention provides an apparatus for protecting dental patient hearing through noise reduction, the apparatus comprising: a main body portion provided in a form that can be mounted on both ears of a user; a microphone module that is provided on one side of the main body portion and collects external sound signals generated from the outside; a noise filter module that is built in the main body portion and filters the external sound signals to block or reduces noise signals included in the external sound signals; and a speaker module that is built in the main body portion and provided on the other side of the main body portion corresponding to the ears of the user, and that outputs sound signals filtered by the noise filter module.

An ear device for arrangement at an ear of a person and provided with at least two electrodes for having skin contact and detecting a bioelectrical signal when in use, the ear device includes a deformable ear canal part adapted to be arranged in an ear canal of the person, and an external ear part adapted to be arranged at the ear external to the ear canal and being provided with at least one external ear electrode for detecting a bioelectrical signal, the external ear part includes at least one bendable arm which is connected to the ear canal part and is adapted to exert a pressure such that the at least one external ear electrode is pressed against the skin when in use.

A sleeve or sheath includes a body having a top opening. The body covers a handheld oximeter probe or a portion of the probe. The sleeve has a shape that approximately matches the oximeter probe or portion of the probe, which is covered by the sleeve. The sleeve has a top opening that allows a user to slide the oximeter probe into the sleeve. The sleeve is transparent to radiation emitted and collected by the oximeter probe. The sleeve is formed of a material that prevents patient tissue, fluid, viruses, bacteria, and fungus from contacting the covered portions of the oximeter probe. The sleeve leaves the probe relatively sterile after use so that little or no clearing of the probe is required for a subsequent use, such as when the probe is covered with a new, unused sleeve.

A removable wearable device sleeve includes a sleeve body, one or more sensors, and an interface for operative communication with the wearable device. A removable sleeve includes a sleeve body having a front element having a first aperture, a back element having a second aperture, a tubular element having a first end and a second end with a third aperture, and one or more back elements define a cavity to encase an earpiece, an interface, and a sensor, wherein the sensor communicates sensor readings to the wearable device through the interface. A method of placing a sensor configured to communicate with a wearable device onto the wearable device includes providing a removable sleeve and inserting the wearable device through the first aperture of the front element into the cavity of the removable sleeve to provide a removable wearable device sleeve.

The present invention relates generally to a system and method for measuring the structural characteristics of an object. The object is subjected to an energy application processes and provides an objective, quantitative measurement of structural characteristics of an object. The system may include a device, for example, a percussion instrument, capable of being reproducibly placed against the object undergoing such measurement for reproducible positioning. The system does not include an external on/off switch or any remote on/off switching mechanism. The system also includes a disposable feature or assembly for minimizing cross-contamination between tests. The structural characteristics as defined herein may include vibration damping capacities, acoustic damping capacities, structural integrity or structural stability.

According to an aspect of the invention there is provided a system for use in monitoring one or more physiological states of a user, the system comprising one or more processors configured to: receive a pressure signal representing pressure within a cushioning layer supporting at least a portion of a user and an acoustic signal representing acoustic vibrations within the cushioning layer; and determine, based on the pressure signal and acoustic signal, the one or more physiological states of the user.

An ear-wearable electronic device has a shell with an outer surface. A mounting void goes through the outer surface of the shell and exposes an internal volume of the shell. The mounting void is located at an ear-contacting region of the shell. The ear-wearable device includes a photoplethysmography sensor assembly having an optical transmission structure mounted in the mounting void and having a distal end exposed proximate the outer surface. The distal end of the optical transmission structure conforms to the outer surface of the shell at the ear-contacting region. The distal end is in contact with ear tissue of a user of the ear-wearable electronic device during use.

Procedure for the generation of a reflex tear secretion, which comprises the chemical stimulation of the cornea of the eye of a subject by applying a controlled jet of a gas with a high CO.sub.2 content, of at least 80% of CO.sub.2. Compact device (1,1′) for the generation of a reflex tear secretion, comprising a gas source (7) in the form of a disposable type cartridge containing a pressurized gas with a composition of at least 80% of CO.sub.2; and a pneumatic circuit connecting an outlet mouth of said gas source (7) with a gas outlet nozzle (3) of the device (1,1′), the circuit comprising pressure regulation means (8) and flow rate (17) regulation means suitable for ejecting puffs of gas through the outlet nozzle (3) at a predetermined pressure and flow rates.

A wearable detection device includes a main body, a first belt body, and a second belt body. The first belt body and the second belt body are connected to two sides of the main body. The main body includes a power source, a control circuit connected to the power source, and a processor connected to the control circuit. The wearable detection device further includes a flexible circuit board and a plurality of to-be-conducted chips. The flexible circuit board is disposed in the first belt body and is connected to the main body. The plurality of to-be-conducted chips are disposed in the first belt body and are connected to the flexible circuit board. When the first belt body and the second belt body are interconnected, the to-be-conducted chip positioned at a junction point is connected.