107 results about "Auscultation - examination" patented technology

The present invention describes a contact type electronic stethoscope with a noise interference resisting function for auscultation, and the stethoscope includes a chest piece for contacting a patient's body, a contact type microphone installed in the chest piece for receiving sounds of patient's organs, and an elastic member disposed on an external side of the contact type microphone, so that harsh sounds and irrelevant noises produced by rubbing the surface of clothes with the patient's body can be avoided during an auscultation, if the piece chest is pressed and contacted with the patient's body without reaching a predetermined pressure and maintains a predetermined distance from the patient's body.

The present invention relates to a device for auscultation of a body. An embodiment of the device includes a housing dimensioned and configured for disposition in an operative orientation relative to a predetermined portion of the body. The housing includes a plurality of chambers disposed therewithin. The plurality of chambers are collectively structured to receive an acoustic signal at least when the housing is disposed in the operative orientation. The housing also includes at least one transducer at least partially disposed in a corresponding one of the chambers. The transducer is structured to convert the acoustic signal into an electrical signal. A concentric structure is formed around the housing for additionally receiving and processing low frequency signals.

A digital electronic stethoscope includes an acoustic sensor assembly that includes a body sensor portion and an ambient sensor portion, the body sensor portion being configured to make acoustically coupled contact with a subject while the ambient sensor portion is configured to face away from the body sensor portion so as to capture environmental noise proximate the body sensor portion; a signal processor and data storage system configured to communicate with the acoustic sensor assembly so as to receive detection signals therefrom, the detection signals including an auscultation signal comprising body target sound and a noise signal; and an output device configured to communicate with the signal processor and data storage system to provide at least one of an output signal or information derived from the output signal. The signal processor and data storage system includes a noise reduction system that removes both stationary noise and non-stationary noise from the detection signal to provide a clean auscultation signal substantially free of distortions. The signal processor and data storage system further includes an auscultation sound classification system configured to receive the clean auscultation signal and provide a classification thereof as at least one of a normal breath sound or an abnormal breath sound.

The present invention relates to a noise reduction assembly for auscultation of a body. An embodiment of the assembly includes an auscultation device formed of a first material and having a proximal end for engagement with the body when the auscultation device is in an operative orientation. An interior dampening layer, which may be formed of a second material, is formed along an exterior surface of the auscultation device and covering all exterior surfaces thereof except the proximal end. An exterior dampening layer, which may be formed of a third material, is then formed in covering relations relative to the interior dampening layer.

An esophageal gastric tube includes lumens for suction, venting and auscultation. The auscultation lumen serves as a conduit for electrical conductors to a thermistor positioned distally of the lumen for measuring core temperature without occlusion of the lumen. A stethoscope membrane encircles the tube, forming a sound chamber. Suction and vent lumens extend from the proximal tube end to the distal tip, while the stethoscope lumen terminates at the sound chamber distal end, for reducing suction noise interference with auscultation. A longitudinal slot in the tubular sidewall enables effective communication between the sound chamber and the stethoscope lumen. The stethoscope membrane includes internal circumferential ribs preventing occlusion of the slot and permitting 360° auscultation. The tube distal sidewall is apertured into the suction lumen, enabling suctioning of the gastric contents. Vent and suction lumens communicate within the distal end of the tube to provide an internal vent for relieving negative stomach pressure.

The present invention discloses a method and system for breath sound identification based on machine learning. The method comprises the steps: collecting breath sound data of all the auscultation point locations of a plurality of users in different age groups; recording the correlation information matching with each breath sound data, and packaging the matched correlation information and the breath sound data to a breath sound data package; performing deep learning classification of the breath sound data, and obtaining a breath sound machine learning classifier aiming at each age group; and selecting a corresponding breath sound learning classifier to perform data analysis and obtain an analysis result according to the age group to which the obtained real-time breath sound data packet belongs. The breath sound data in different age groups and the matching correlation information are packaged to the breath sound data packet to perform deep learning classification to obtain the breath sound machine learning classifier of each age group so as to perform data analysis of the real-time obtained breath sound data packet and obtain a result, realize accurate and intelligent disease analysis and identification and facilitate assistance of doctor clinic research.

An apparatus for auscultation and percussion of a human or animal body has a stethoscope with a diaphragm on one side of a head thereof, and a percussion mechanism positioned in the head for selectively producing a percussion against the body such that a sound from the percussion mechanism is passed through a tube connected to the head. The percussion mechanism includes a cylinder positioned within the head, a piston slidably positioned within the cylinder, and an activator lever connected to the piston for moving the piston between a first position adjacent to an impact element and a second position away from the impact element.

A method and a microprocessor controlled device for use in medical evaluation of the pulmonary system. The method and device incorporate two different non invasive evaluative techniques. Passive auscultation provides indicators of lung condition. Active auscultation, a different evaluative technique, provides information or indications generally not available or provided from passive auscultation. Combining the information from both techniques greatly improves the ability to provide effective medical treatment.

The present invention relates to inspection of medical patients including, but not limited to, phonocardiography, auscultation and ultrasound medical imaging and other non-acoustical inspection techniques; and industrial non-destructive testing and evaluation of materials, structural components and machinery; and more particularly to the incorporation of cognitive artificial intelligence into an inspection system and method that utilizes cognitive mathematical techniques which emulate the cognitive processing abilities of the human brain including, but not limited to, symbolic cognitive architectures and inference process algebras, to analyze data collected from infrasound acoustical sensors (0.1 Hz-20 Hz), audible acoustical sensors (20 Hz to 20 kHz), ultrasound acoustical sensors and transmitters above 20 kHz, data collected from other non-acoustical inspection devices and systems including, but not limited to electrocardiography (EKG), computed-tomography (CT), single photon emission computed tomography (SPECT), positron emission tomography (PET), magnetic resonance imaging (MRI), electromagnetic testing (ET), magnetic particle inspection (MT or MPI), magnetic flux leakage testing (MFL), liquid penetrant, radiographic (x-ray and gamma ray), eddy-current testing, low coherence interferometry, and combinations thereof (i.e., multi-modality inspection data); fuse this data resulting in the generation of new metadata; and then utilize cognitive mathematical techniques to interpret this data against inspection signatures that characterize conditions being diagnosed. The present invention has the ability to also identify and anticipate abnormal conditions that fall outside known inspection signature patterns; and communicate the inspection results to an operator thereby simplifying the initial inspection and diagnosis for medical patients and industrial objects; minimizing false negative and false positive initial inspection results and lowering costs.

The invention relates to the technical field of bearing fault detection, in particular to a detection signal processing device and method. The method comprises the following steps: an audio processing line receives a first sensor signal; after the first sensor signal is processed, the processed first sensor signal is output to an earphone; and if a recording instruction sent from a control unit is received, the first sensor signal is sampled, and the sampled first sensor signal is converted into a digital signal, and the digital signal is sent to a control unit to be stored. When a detection device carries out real-time auscultation on a mechanical device, detection data is converted into the digital signal so as to store the digital signal by a lossless audio format, so that the digital signal can be stored in external storage devices, including an SD (Secure Digital Memory) card, a data acquisition card with large volume and high price does not need to be used, cost is lowered, and circuit design is simplified.

The present specification discloses systems and methods of patient monitoring in which multiple sensors are used to detect physiological parameters and the data from those sensors are correlated to determine if an alarm should, or should not, be issued, thereby resulting in more precise alarms and fewer false alarms. Electrocardiogram readings can be combined with invasive blood pressure, non-invasive blood pressure, and/or pulse oximetry measurements to provide a more accurate picture of pulse activity and patient respiration. In addition, the monitoring system can also use an accelerometer or heart valve auscultation to further improve accuracy.

A mobile device for an electronic stethoscope, including: a microphone, which receive an acoustic signal coming from an area of the body during a detection period and generates an auscultation signal of an electrical type, as a function of the acoustic signal; a transmitter; a processing unit, which transmits the auscultation signal to an external electronic device, through the transmitter; and an electronic accelerometer, which generates an acceleration signal indicating acceleration of the mobile device. The processing unit generates, on the basis of the acceleration signal, a position signal, indicating the position of the mobile device during the detection period, and transmits the position signal to the external electronic device, through the transmitter.

The invention relates to a heart sound transmission and management system based on NFC (Near Field Communication) and the Bluetooth. The heart sound transmission and management system consists of a heart sound acquisition hardware module and an Android-cellphone upper computer, wherein the heart sound acquisition hardware module consists of a medical auscultation head, an electret microphone, a filtering circuit, a dsPIC chip circuit, an HC-05 Bluetooth module and a Samsung TecTilesNFC tag; the Android-cellphone upper computer completes the acquisition and storage of heart sound, and supported Android applications of the Android-cellphone upper computer mainly comprise an NFC response module, a Bluetooth matching module, a heart sound acquisition module and a data management module. According to the heart sound transmission and management system based on the NFC and the Bluetooth, the heart sound signal acquisition process for a user is simplified, the heart sound signal acquisition for the user can be completed conveniently and quickly by using the system, and heart sound signal data transmission is completed through wireless transmission technologies based on the NFC and the Bluetooth.

In one aspect, an enhanced ultrasound device may generally comprise an ultrasound probe including a housing and at least one transducer element disposed within the housing. The ultrasound probe may be configured to generate ultrasound image signals associated with an object being imaged. In addition, the device may include an acoustic receiver associated with the ultrasound probe. The acoustic receiver may be configured to generate auscultation signals associated with sounds generated by the object as the object is being imaged using the ultrasound probe.

The invention relates to a multifunctional electronic stethoscope. The multifunctional electronic stethoscope comprises a power generation circuit, a stethoscope head, a primary amplifying circuit, a band-pass filtering circuit, a power frequency trap circuit, a main amplifying and voltage bias circuit and a signal processing module, wherein the power generation circuit is used for supplying power for the primary amplifying circuit and the signal processing module; the stethoscope head is used for transmitting a human body heart sound signal or a fetal sound signal to the primary amplifying circuit; the primary amplifying circuit is used for amplifying the collected signal; the band-pass filtering circuit is used for performing noise reduction on the collected signal; the power frequency trap circuit is used for performing interference suppression on the collected signal; the main amplifying and voltage bias circuit is used for amplifying the collected signal and biasing the amplified voltage to a set voltage value; the signal processing module is used for processing the collected signal and performing A/D conversion on the collected signal. The invention further provides a multifunctional electronic auscultation system.

The invention discloses an electronic stethoscope with active noise reduction and auxiliary diagnosis functions, and relates to electronic stethoscopes. The electronic stethoscope comprises an auscultation head, an audio processing circuit, a liquid crystal display screen, a button, a microprocessor control circuit, earphones, a switch and an SD card. The auscultation head is provided with a built-in sound collection channel and a built-out sound collection channel. The input end of the audio processing circuit is connected with the built-in sound collection channel and the built-out sound collection channel of the auscultation head. The liquid crystal display screen is used for displaying the working state of the electronic stethoscope. The button is used for driving the electronic stethoscope to enter a recording mode. The output end of the microprocessor control circuit is connected with the input end of the audio processing circuit and the input end of the liquid crystal display screen. The input end of the microprocessor control circuit is connected with the button, the output end of the audio processing circuit and the output end of the liquid crystal display screen. The earphones are connected with the output end of the audio processing circuit. The switch is connected with a power source. The SD card is connected with the audio processing circuit and the microprocessor control circuit.

The invention discloses a system for identifying and diagnosing rheumatic heart disease based on sound sensors. The system comprises the plurality of sound sensors placed on the surface of a thoracic cavity outside a heart, and the sound sensors are all connected with a signal processing system which is connected with monitor terminal equipment. A method for identifying and diagnosing the rheumatic heart disease based on the sound sensors comprises the steps: placing the sound sensors on the surface of the thoracic cavity outside the heart, transmitting heart sounds detected by the sound sensors to the signal processing system, performing three-dimensional sound source positioning signal processing, and finally obtaining a position where cardiac souffle is made, wherein the position is shown on the screen of the monitor terminal equipment in icon and three-dimensional coordinate forms. The system and the method have the advantages that a cardiac souffle situation can be accurately obtained by auscultation, and the position of a souffle sound source can be exactly positioned and be displayed on a displayer in real time. By adopting the method and the equipment of the system, the rheumatic heart disease can be well diagnosed according to the heart sounds.

The invention discloses an automatic friction sound interference elimination method for electronic stethoscopes, which relates to the technical field of stethoscope silencing. The method comprises: carrying out empirical mode decomposition for data XK in the Kth interference time interval in x, so that M<K> intrinsic mode function components shown in the drawing are obtained; after low-pass filtering is carried out for IMF<2> and IMF<3>, calculating related coefficients of IMF<2> and IMF<3> frame by frame, determining P data point ranges respectively recorded in the drawing, and setting all data outside the data point ranges as zeros; calculating the equation shown in the drawing, and sequentially assigning update values to the edge data segments of the P data point ranges by triple splineinterpolation. The method can rapidly and accurately detect and locate one or more friction sound interference regions which can appear in an auscultating signal; and while friction sound interference on single-channel auscultation data can be automatically eliminated, the friction sound of a plurality of friction sound interference regions in the same segment of data can be automatically eliminated.

A system having a chest piece for fitting to human skin, a receiver unit and a distant server; said chest piece encapsulates a sound transducer for acquiring raw sound data for being communicated as data signal; said receiver, in operation, is in communication with said chest piece; said receiver is a portable device having a display unit and data processing ability, and is further connectable to a local data network or global internet; said distant server comprises computer coded instructions which, in operation, processes said data signals, stores medical information and communicates said data signals and/or medical information with at least two recipients, the recipients are able to communicate information.

The invention provides an auscultation ball type gas pipeline leakage detection device and method. The auscultation ball type gas pipeline leakage detection device comprises auscultation heads, acoustic conducting pipes, acoustic emission sensors and an auscultation ball. Each acoustic conducting pipe is installed on the corresponding auscultation head, and the other end of each acoustic conducting pipe is connected to the corresponding acoustic emission sensor which is located inside the auscultation ball. When the auscultation ball moves along the axis of a detected gas pipeline under the action of the gas flow, the auscultation heads are driven to move along the inner wall of the detected gas pipeline. When gas leakage of the detected pipeline happens, multi-phase turbulent jet flow isformed by fluid in the pipeline on the leaking portion due to the pipe interior and exterior pressure difference of the leaking point, the jet flow, the pipeline and surrounding media conduct interaction with one another to outwards radiate energy, high-frequency stress waves are generated on the pipe wall, picked by the auscultation heads, then amplified by the acoustic conducting pipes and received by the acoustic emission sensors located in the auscultation ball, the change of output signals of the sensors is caused, and finally the output signals of the sensors are integrated to comprehensively evaluate the leakage situation of the gas pipeline.

A method of processing a signal representing an input sound signal is disclosed. The signal is divided in time into a plurality of signal segments, each having an individual duration of time. The signal segments are processed into an output signal of successive signal segments in such a way that at least one, preferably all, of the signal segments are repeated immediately and successively at least once in the output signal. Each signal segment is established in such a way that the duration of time of a majority, preferably all, of the signal segments is less than 60 ms. Thus, a sound signal can be reduced in speed by doubling the number of short cycles.

A method and system provides improved auscultation training for medical students and other healthcare providers. The system includes an instructor stethoscope which generates an acoustic output corresponding to an ausculatory sound from the patient. The acoustic output is wirelessly transmitted to earpieces worn by one or more students such that the students can simultaneously listen with the instructor to the ausculatory sound. The acoustic output may be recorded for future listening and training The instructor stethoscope includes a resonance chamber having a capacitive pickup to receive the ausculatory sound wave from the stethoscope chest piece. The acoustic wave is converted to an analog signal and then to a digital signal, which is broadcast and then re-converted to an analog signal for the listening students.

The invention discloses a method for cardiac sound waveform data processing and graph displaying and an auscultation system. With a cardiac sound waveform data processing method, characteristics of a first cardiac sound and a second cardiac sound can be identified accurately and automatically without the need to input any parameter by a user and a heart rate is extracted in real time. With a cardiac sound graph displaying method, an original cardiac sound graph and a similar electrocardiogram after data processing are displayed on a same graph simultaneously; and up-down comparison of characteristic points is realized conveniently by sharing a same timer shaft. Therefore, the original fluctuation situation of the original cardiac sound graph can be observed and the cardiac sound characteristics can be observed clearly in the similar electrocardiogram after data processing, so that a visualized effect of the cardiac sound graph is realized and a clear cardiac sound graph can be obtained and thus the diagnosis becomes accurate. With an electronic auscultation system, a heart rate can be record and extracted in real time and a clear cardiac sound graph can be displayed.

The invention discloses a heart beat frequency spectrum mapping auscultation device and a using method thereof. The using method comprises the following steps: continuously detecting the position of a specific detection point of the ventricular wall or the vascular wall through transmitting-receiving of ultrasonic waves and rear-end geometric inversion in an auscultation head, so as to obtain a point beat wave; mapping the point beat wave to the human ear hearing sensitive area by using a signal processing method, converting electrical signals into sound signals through an electro-acoustic converter, and playing the sound signals. The heart beat frequency spectrum mapping auscultation device comprises the flexible auscultation head, a processing module and the electro-acoustic converter, wherein the bending degree of the flexible auscultation head is adjusted according to the requirements of the detection parts; a coupling agent is clung to the body surface of a specific auscultation part to be used for transmitting and receiving ultrasonic waves and carrying out data communication; the parameter setting, data communication, point beat wave inversion, signal processing and man-machine interaction of the whole device can be realized by the processing module; the digital-to-analog conversion, electro-acoustic conversion and sound playing can be realized by the electro-acoustic converter. The device has the advantages of being high in detection precision, clear in sound and the like, thereby being suitable for auscultation of heat vessels, lung, abdomen and other organs.

The invention provides a remote auscultation method and system; a receiver and a pickup collect sound information of a patient affected part; an audio frequency converter converts the sound information collected by the receiver and the pickup into a digital signal, and the digital signal is emitted by a signal emission module; a signal reception module receives the digital signal emitted by the signal emission module, the received digital signal is converted into sound information, and the sound information is sent to a doctor. The signal reception module receives the signal through Bluetooth or a WIFI module. The method and system can realize remote auscultation.