182results about "Diagnostics using vibrations" patented technology

The technology relates to acoustic reflectometry systems and methods. An example system includes an acoustic sensor that includes a generator that emits acoustic pulses; and a sensor that detects the emitted acoustic pulses and reflections thereof. The system further includes a monitor, in communication with the acoustic sensor. The monitor performs operations including: receive patient data for a current patient receiving ventilation; provide the patient data as input to a trained clinical model; receive, as output from the trained clinical model, a clinically relevant threshold for an acoustically measurable parameter; process the detected incident and reflected waves to determine a value of the acoustically measurable parameter; compare the value of the acoustically measurable parameter to the clinically relevant threshold; and based on the comparison, generate a notification.

A method includes adjusting electrical energy of an extracorporeal shockwave generator, which delivers an entrance shockwave to a body that includes a target, in response to calculated or measured energy density at the target to deliver desired energy density to the target along a path. The calculated energy density at the target, called calculated target energy density, is derived from a calculated shockwave attenuation along the path to the target; and the measured target energy density is obtained by a sensor placed at the target or at a defined distance from the target.

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 penis measurement system and method, wherein the system includes a user device and a penis measurement device. An external soft casing encases a main shell of the penis measurement device. When at least one strap of the external soft casing is strapped on a penis, the external soft casing fixes the main shell to be on top of the penis, allowing a detection airbag protruding from the main shell to press down onto the penis with a down-pressing pressure. The detection airbag deforms and presses onto a sensor chip in the main shell. A processing unit receives a pressure sensor signal from the sensor chip and a gyroscope signal from a gyroscope in the main shell, and accordingly outputs a hardness value and a gyroscope value to a user device through a communication unit. The system quantifies a hardness of the penis.

The measuring probe of the present invention includes: a probe; a fulcrum accessory that supports the probe; an actuator that vibrates the probe; and a force sensor that outputs a voltage value corresponding to a reaction force acting on the actuator when the distal end of the probe is brought into contact with the auditory ossicles. The actuator applies vibration of a constant amplitude centered on a fulcrum near the center of gravity of the probe. The force sensor includes a piezoelectric sensor and a charge amplifier. The piezoelectric sensor converts the reaction force of the force applied by the actuator from the probe to the auditory ossicles into a charge signal. The charge amplifier converts the charge signal into a voltage and outputs the voltage. The measuring probe includes a rigidity / inertial force applying mechanism that applies to the measuring probe rigidity capable of maintaining a constant relative position between the fulcrum and the actuator and an inertial force capable of overcoming the vibration of the actuator.

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.

System for attaching transducers to the head of a user for performing audiometry in air stimulation and in vibratory stimulation. It comprises support means (1, 10, 20, 24) for two audiometric transducers (21) in air stimulation, each positionable at one of the auditory auricles or the external auditory canal, and at least one audiometric transducer (3, 13, 23) in vibratory stimulation, positionable at the desired stimulation zone depending on the chosen conduction mode (for example, one of the mastoids of the skull, forehead, soft tissues). Method for calibrating the transducers in vibratory stimulation fixed on a fixing system such as above. Figure for the abstract: Fig. 6

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.

Provided herein are system, devices, and methods for a pelvic floor rehabilitation device. The rehabilitation device includes a handle for holding and manipulating the pelvic floor rehabilitation device, a controller to receive instructions and to control operation of the pelvic floor rehabilitation device, a shaft extending from the handle, wherein at least part of the shaft dilates based on input from the controller, at least one sensor for collecting data during operation of the pelvic floor rehabilitation device, and at least one system from the group of an electromyography system, an ultrasound system, a camera, and a vibration system.

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.

The present invention discloses a method for measuring the masking level of a wide-spectrum, short-duration signal used in a bone-conduction auditory evoked potential (BAP) test. The method comprises: measuring the stimulation force level of a subject's bone vibrator; placing the BAP vibrator of the evoked potential instrument at the mastoid process on one side of the subject, outputting a short-duration signal at a set intensity as a stimulus; and simultaneously applying white noise of varying intensities to both sides of the subject; and calculating, based on the stimulation force level and the subject's response, the contralateral noise masking level sufficient to mask the BAP signal. This invention, for the first time, derives the contralateral masking level of a BAP wide-spectrum, short-duration signal, providing a reference value for the practical application of BAP.

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.

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.

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.

The present invention discloses a method and an apparatus for acquiring motion information. A frequency domain transformation is performed on a detection signal of a vibration propagating in a medium to obtain a frequency domain signal, then a signal that is outside of a defined vibration velocity range is removed from the frequency domain signal, that is, only a vibration signal is retained, and then a position-time diagram is obtained along a defined vibration propagation direction. It is not necessary to perform motion estimation on propagation of the vibration by a complicated calculation, and it is only necessary to determine the presence or absence of the vibration by processing in the frequency domain, and then the position-time diagram is obtained, which is a highly efficient method for acquiring motion information.

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 vibration generating system (100) for elastography equipment and a control method thereof, elastography equipment, a method for controlling the vibration generating system (100) for elastography equipment, a method for operating the elastography equipment, and a corresponding computer-readable medium. The vibration generating system (100) for elastography equipment comprises: a control unit (1), a pressure source (2), a pressure regulating unit (3), and a vibration transmitting unit (4). The pressure regulating unit (3) is in fluidic communication with the pressure source (2) and the vibration transmitting unit (4), respectively. The vibration transmitting unit (4) is used to transmit vibration according to a pressure acting thereon. The control unit (1) is coupled with the pressure regulating unit (3). The control unit (1) is configured to obtain a control parameter by using a look-up table module (12) according to inputted elastography conditions, so as to control the pressure regulating unit (3).

The use of an active substance selected from an HCAR2 receptor activator, an HCAR3 receptor activator, an ester thereof, and a combination thereof in the preparation of a kit for detecting a neurological function state of a subject. The kit comprises several small chambers to accommodate different concentrations of aqueous solutions of the HCAR2 receptor activator or the HCAR3 receptor activator or the ester thereof. The kit can be used for effectively detecting the neural neurological state of the subject by means of evaluating the sensitivity of the subject to the HCAR2 receptor activator or the HCAR3 receptor activator or the ester thereof, and can be used for quickly obtaining a detection result by means of a few simple steps in a short time, so that real-time detections in multiple scenarios such as hospital wards, physical examination centers, and homes are achieved.

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.

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.

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.