124results about "Diagnostics using vibrations" patented technology

Techniques are disclosed for preparing an MR elastography of a liver, which includes creating a photographic recording of an examination object, determining a position of the liver on the basis of the photographic recording, providing an information item regarding a target position of an oscillation generator on the basis of the position of the liver, arranging the oscillation generator on the examination object dependent upon the information regarding the target position, introducing the examination object with the oscillation generator into a patient receiving region of a magnetic resonance device, capturing overview MR image data from the examination object, and selecting an examination region for transverse slices covering at least one subregion of the liver for a recording of MRE image data on the basis of the overview MR image data.

A system for characterizing tissue includes a probe that delivers a continuous and periodic mechanical vibration to a tissue of a subject; an ultrasound emitter that emits a sequence of ultrasound shots and an ultrasound receiver that receives corresponding echo signals to track how the tissue is moved by the periodic mechanical vibration delivered to the tissue; and a control module programmed to provide homogeneity information to an operator of the system, the homogeneity information being determined from at least some of the echo signals and being representative of the ability of the tissue to transmit elastic waves and of the homogeneity of the tissue with respect to the propagation of elastic waves.

A processor of an ear-worn device such as an earbud may receive acceleration data from an accelerometer of the earbud. The processor may determine a position of a body wearing the earbud based on the acceleration data. The processor may determine a pathology of the body. The processor may generate, based on the position of the body and the pathology, a therapy recommendation. The processor may output an indication of the therapy recommendation via the earbud or one or more other devices.

An ear-worn device may include an accelerometer and / or an electroencephalography (EEG) sensor to provide recommendations based on user activity and / or physiological responses. The ear-worn device may use the accelerometer to capture acceleration data to assess the wearer's movement rate, and detect changes. Using data from the EEG sensor, the processor may detect eyelid blinks and other signals of fatigue. The processor may generate a treatment recommendation based on any combination of the movement rate, changes, eyelid blinks, and / or signals of fatigue.

An optical measurement system in a subject, comprising an acoustic transducer, a laser that emits light within an infrared (IR), visible or ultraviolet wavelength range, an optical filter, a photodetector and an optical reflector.

Systems, devices, and methods for performing mobile device-based oscillometric blood pressure measurements are disclosed. In some embodiments, the mobile device includes a vibration motor, an inertial motion unit (IMU), a camera, a processor, and a non-transitory computer-readable memory, and the processor is configured to at least: vibrate the vibration motor; acquire, via the inertial measurement unit of the mobile device, IMU data indicative of vibration damping caused by a user's body part applying a force to the camera; determine the applied force based on a force model and the IMU data; capture, via the camera of the mobile device, photoplethysmography (PPG) data of blood vessels in the body part simultaneously with the application of the force; and determine the user's blood pressure using oscillometric techniques based on the PPG data and the applied force.

An audiometry test method comprising the following steps:Simultaneous application of a test sound to an ear (210) with a test intensity, and of a masking sound, with a masking intensity, to a contralateral ear (220) to mask the test sound,the process being characterized in that it comprises the following steps:Repeat the following steps:Determining a current Rinne,Determining that the current Rinne is compatible, if there is a current intensity, such that if the masking intensity is equal to the current intensity and the Rinne of the (210) or contralateral (220) ear is equal to the current Rinne, then the test sound is not perceived by the contralateral ear (220) and the masking sound does not prevent the perception of the test sound by the ear (210),Determining masking intensity from maximum compatible current Rinne.

Two or more microphone arrays in an ear-worn device such as an earbud may detect a sound generated by a source body. A processor of the earbud may generate, based on the sound, a noise cancellation data package including an anti-phase sound. The processor may transmit the noise cancellation data package to a second earbud to cancel the sound for another body.

An assembly and a method is described. The assembly includes a platform, a motive source, a sensor, a controller and a computerized system. The computerized system has logic configured to cause a processor to send a signal to the controller to cause the motive source to move the platform through at least a portion of a range of inclination angles and to receive data indicating at least one of muscle activity, movement, and ground reaction force applied to the platform at a determined angle, and to cause the processor to analyze the data to determine an orthotic angle for a user's foot.

A driver for transperineal magnetic resonance elastography provides a body harness stabilizing a mechanical actuator against a body reference point to provide improved imaging. The driver may employ a polymer bellows for mechanical simplicity and low cost.

Disclosed are systems, devices and methods for mobile device based oscillometric blood pressure measurement. In some aspects, a mobile device includes a vibration motor, an inertial motion unit (IMU), a camera, a processor, and non-transitory computer-readable memory, in which the processor is configured to perform operations including: causing the vibration motor to vibrate; acquiring, using the inertial measurement unit of the mobile device, IMU data indicative of vibration damping that is caused by a user, using a body part, applying a force on the camera; determining the applied force based on a force model and the IMU data; capturing, using the camera of the mobile device, photoplethysmography (PPG) data of a set of blood vessels in the body part concurrently with the application of the force; and determining a blood pressure of the user using an oscillometric technique based on the PPG data and the applied force.

The invention comprises a device and method to estimate the elasticity of soft elastic solids from surface wave measurements. The method is non-destructive, reliable and repeatable. The final device is low-cost and portable. It is based in audio-frequency shear wave propagation in elastic soft solids. Within this frequency range, shear wavelength is centimeter sized. Thus, the experimental data is usually collected in the near-field of the source. Therefore, an inversion algorithm taking into account near-field effects was developed for use with the device. Example applications are shown in beef samples, tissue mimicking materials and in vivo skeletal muscle of healthy volunteers

A device, system and method for vibration sensitivity assessment are provided. the device has an attachment portion configured to detachably connect the device to a programmable vibration source and a probe configured to be applied to a test location on a test subject's skin and to convey vibrations generated by the programmable vibration source to the test location. The programmable vibration source may for example be a mobile telephone. A low-cost and widely usable device for vibration sensitivity assessment is thus provided.

There is disclosed a system for monitoring one or more physiologic signals, autonomic neural signals, and / or electrophysiological signals from a subject, comprising: a head mounted display sized for placement onto a head of the subject comprising a visual input device and a back-facing imaging sensor; the visual input device arranged within a field of view of the subject when the head mounted display is coupled thereto, the visual input device configured to display an output image for the subject; the back-facing imaging sensor arranged with a field of view covering one or more facial features of the subject when the head mounted display is coupled thereto, the back-facing imaging sensor configured to generate one or more feedback images the subject; and a processor electrically coupled and / or wirelessly coupled to the visual input device and the back-facing imaging sensor, the processor configured to deliver the output images, accept the feedback images, and analyze the images to determine one or more of the physiologic, autonomic neural, and / or electrophysiological signals.

Techniques for reducing repetitive stress injuries to soft tissue in performing a process are disclosed. The techniques include obtaining at least one repetitive stress data set related to the soft tissue and to the process; accessing information characterizing a first damage regime and second information characterizing a second damage regime, where the first information quantifies a number of repetitions at a given stress for the soft tissue to transition out of the first damage regime, and wherein the second information quantifies a number of repetitions at a given stress for the soft tissue to transition out of the second damage regime; predicting conditions sufficient for damage to the soft tissue; determining, based on at least the predicting, at least one guideline for reducing a risk of a soft tissue material repetitive stress injury; and implementing the at least one guideline in the process.

The present disclosure provides a peripheral nerve signal acquisition method and system. The method includes: wearing a wearable device on a human wrist, disposing a perturbation unit in the wearable device, and applying mechanical perturbations perpendicular to a neural pathway to a skin surface during electrical stimulation cycles; under the action of the mechanical perturbations, acquiring a first signal, a second signal, and a third signal; performing multi-channel time-delay encoding on the first signal and the second signal to generate an interference signal set with temporal phase differences; constructing an artifact template signal associated with the electrical stimulation based on the third signal; performing artifact cancellation processing on the first signal and the second signal; and performing spatial analytical analysis in combination with a peripheral nerve pathway map, identifying an initiation site and a conduction pathway of peripheral nerve discharges, and outputting authentic discharge signals of the peripheral nerves.

A probe insertion apparatus for real ear measurement includes a probe tube, a reference microphone, a reference speaker, an operator feedback device, a memory, and a processor. The processor is configured to direct the reference speaker to continuously emit reference sound, continuously receive reference signals from the reference microphone and tympanic reflection signals from the measurement microphone, and continuously make determinations of a tympanic distance between the sound receiving end of the probe tube and a tympanic membrane based on the reference and tympanic reflection signals and absent reference to a calibration measurement, as the operator moves the sound receiving end towards the tympanic membrane. The processor is also configured to automatically direct the operator feedback device to provide indicia of the tympanic distance between the sound receiving end of the probe tube and a tympanic membrane, as the operator moves the sound receiving end towards the tympanic membrane.

Method and system for tracking of acoustic vibrations of a structural element of the middle or inner ear with optical coherence tomography using an acoustic source configured to generate an acoustic stimulus to induce vibrations of the structural element; an OCT device configured to measure a measurement signal comprising vibrographic information representative for the vibrations of the structural element in a measurement direction and an optical tracking system arranged to measure a tracking signal representative for displacements of the structural element in at least a tracking direction perpendicular to the measurement direction.

To solve such a problem that it is not possible to effectively measure nocturnal erection without being affected by measurement.SOLUTION: A penis measurement system and method are provided. The system includes a user device and a penis measurement device. An external soft kit of the penis measurement device covers a sensing balloon on a body housing. When a strap of the external soft kit is tightened around the penis, the body housing is fixed above the root of the penis, thereby causing the sensing balloon to generate a downward pressure against the penis. A reactive force corresponding to the downward pressure on the penis presses the sensing balloon, thereby pressing a sensing chip inside the body housing. In response, a pressure sensing signal is generated. A processing unit calculates a hardness value on the basis of the pressure sensing signal and outputs it to the user device, thereby contributing to the quantification of hardness of the penis.SELECTED DRAWING: Figure 2

A hand-held personal care device has an actuator, for implementing a personal care function, which generates a vibration (or multiple different vibrations). A sensor arrangement detects a signal which varies in dependence on the vibration of the personal care device. By analyzing the signal, a user's grip pattern on the handle is detected. This can be used to detect problems the user is having in creating a grip caused by a physical disability such as joint stiffness caused by arthritis.

Systems, devices, and methods for mobile device-based hand grip strength measurement are disclosed. In some aspects, the mobile device includes a vibration motor, an inertial motion unit (IMU), a processor, and a non-transitory computer-readable memory, and the processor is configured to perform operations including vibrating the vibration motor, acquiring IMU data using the inertial measurement unit of the mobile device indicative of vibration damping caused by a user applying a force to the mobile device, and determining the applied force based on a force model and the IMU data.

A system for measuring vibrations transmitted to a user's hand (1) comprises a housing (2) surrounding a vibration monitor. The system further comprises a glove element (3) for holding at least the index finger and thumb, the glove element further comprises a pocket (4) configured to hold the housing (2) on the first dorsal interosseous muscle on the back of the user's hand (1).

Systems, devices, and methods for mobile device-based hand grip measurement are disclosed. In some aspects, a mobile device includes a vibration motor, an inertial motion unit (IMU), a processor, and a non-transitory computer readable memory, where the processor is configured to perform operations including: vibrating the vibration motor; obtaining IMU data using an inertial measurement unit of the mobile device, the IMU data indicating vibration damping caused by a user applying a force to the mobile device; and determining an applied force based on a force model and the IMU data.

The disclosure relates to an elastography apparatus designed to support magnetic resonance elastography, including an oscillation generator, a fixation apparatus designed to fix the oscillation generator to an object under examination, a pressure sensor designed to detect a contact pressure acting between the oscillation generator and the object under examination, and an output unit designed to output the detected contact pressure.

The present invention relates to a method and apparatus for measuring the surface viscoelasticity of biological tissue. The method includes: step S1, driving the surface of the biological tissue in the direction normal to the surface of the surface to move it to a certain displacement along the normal and then holding it; step S2, using a sensor to measure the time-dependent mechanical response of the surface of the biological tissue during the execution of step S1; and step S3, outputting viscoelastic characteristic data of the surface of the biological tissue by a processing module in accordance with the mechanical response acquired by the sensor. The measurement method of the present invention is intended to more scientifically and reliably detect the surface viscoelasticity of biological tissue, particularly human skin.

A processor of an ear-worn device such as an earbud may receive acceleration data from an accelerometer of the earbud. The processor may determine a position of a body wearing the earbud based on the acceleration data. The processor may determine a pathology of the body. The processor may generate, based on the position of the body and the pathology, a therapy recommendation. The processor may output an indication of the therapy recommendation via the earbud or one or more other devices.

One or more light sensors in an ear-worn device may determine a partial pressure of carbon dioxide in a bloodstream of a patient. A processor of the ear-worn device may determine, based on the partial pressure of carbon dioxide and a threshold, a respiratory pathology of the patient.

One or more light sensors in an ear-worn device may determine a partial pressure of carbon dioxide in a bloodstream of a patient. A processor of the ear-worn device may determine, based on the partial pressure of carbon dioxide and a threshold, a respiratory pathology of the patient.

A processor of an ear-worn device such as an earbud may generate a model of an ear canal based at least in part on a soundwave detected by two or more microphone arrays of the earbud. The processor may determine, based on a stored model of the ear canal and the model of the ear canal, a change of a geometry of the ear canal. The processor may determine, based on the change of the geometry of the ear canal, the soundwave and an oxygen saturation value of a bloodstream, a respiratory therapy device being used to treat a pathology. The processor may generate, based on the respiratory therapy device, a therapy recommendation. The recommendation may be outputted on one or more devices.