WO2024094601A1 - Pavillon pour stéthoscope, stéthoscope électronique et utilisation associée - Google Patents

Pavillon pour stéthoscope, stéthoscope électronique et utilisation associée Download PDF

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Publication number
WO2024094601A1
WO2024094601A1 PCT/EP2023/080201 EP2023080201W WO2024094601A1 WO 2024094601 A1 WO2024094601 A1 WO 2024094601A1 EP 2023080201 W EP2023080201 W EP 2023080201W WO 2024094601 A1 WO2024094601 A1 WO 2024094601A1
Authority
WO
WIPO (PCT)
Prior art keywords
chestpiece
movement
amplifier unit
rotation
movement sensor
Prior art date
Application number
PCT/EP2023/080201
Other languages
English (en)
Inventor
Diana VAN STIJN
Toni Leinonen
Jhonatan BRINGAS DIMITRIADES
Original Assignee
Lapsi Health B.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lapsi Health B.V. filed Critical Lapsi Health B.V.
Publication of WO2024094601A1 publication Critical patent/WO2024094601A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B7/00—Instruments for auscultation
    • A61B7/02—Stethoscopes
    • A61B7/04—Electric stethoscopes

Definitions

  • the present invention relates to a chestpiece for an electronic stethoscope and more particularly to a chestpiece accord to preamble of claim 1.
  • the present invention further relates to an electronic stethoscope, and more particularly to an electronic stethoscope according to preamble of claim 17.
  • the present invention further relates to a use, and more particularly to a use according to preamble of claim 19.
  • Electronic stethoscopes convert acoustic auscultated sound into auscultated sound signal with a microphone.
  • the auscultated sound signal is further transferred to an external audio device comprising one or more speakers.
  • the external audio device may be headset or earplugs used by a doctor during diagnosis. In many cases the sound level of the auscultated sound signal needs to be increased.
  • the chestpiece of the electronic stethoscope is provided with volume buttons which may be pressed for adjusting the volume level.
  • the disadvantage of the prior art is that the volume buttons need to be operated during the diagnosis when the chestpiece is placed against the patient body. Operating or pushing the volume buttons causes increases pressure against the patient body affecting or deteriorating the auscultated sounds and further the auscultated sound signal. This may further cause false diagnosis and/or disruptions in the diagnosis.
  • An object of the present invention is to provide a chestpiece, an electronic stethoscope and a use of a photoplethysmography sensor so as to solve or at least alleviate the prior art disadvantages.
  • the objects of the invention are achieved by a chestpiece which is characterized by what is stated in the independent claim 1.
  • the objects of the invention are further achieved by an electronic stethoscope which is characterized by what is stated in the independent claim 17.
  • the objects of the invention are also achieved by a use of a movement sensor in a chestpiece of a wireless electronic stethoscope which is characterized by what is stated in the independent claim 19.
  • the preferred embodiments of the invention are disclosed in the dependent claims.
  • the invention is based on the idea of providing a chestpiece for an electronic stethoscope.
  • the chestpiece comprises a body, an audio chamber inside the body for detecting auscultated sound from a patient body, a first microphone provided in connection with the sound chamber for converting the auscultated sound into an auscultated sound signal, and an amplifier unit configured to amplify the auscultated sound signal.
  • the chestpiece comprises a movement sensor configured to detect movement of the chestpiece, the movement sensor being operatively connected to the amplifier unit, the amplifier unit is configured to adjust amplification level of the amplifier unit as a response to the detected movement with the movement sensor to generate an amplified auscultated audio signal.
  • amplification level of the auscultated sound signal in the amplifier unit is adjusted as a response to the movement of the chestpiece detected with the movement sensor.
  • the amplifier unit is configured to adjust the amplification level as a response to the movement of the chestpiece detected with the movement sensor.
  • the amplifier unit is configured to adjust the amplification level based on the movement of the chestpiece detected with the movement sensor.
  • the movement sensor is configured to generate a chestpiece movement signal based on the detected movement and the amplifier unit is configured to adjust the amplification level of the amplifier unit based on the chestpiece movement signal.
  • Utilizing the movement sensor for adjusting the amplification level of the amplifier unit enables adjusting sound volume level of the auscultated sound signal by movement of the chestpiece. Therefore, buttons for adjusting the sound volume level may be omitted and thus deterioration of the auscultated sounds and auscultated sound signal may be avoided or at least reduced. Adjusting the sound volume level is convenient during use of the chestpiece and can be carried out easily with one hand holding the chestpiece.
  • the amplifier unit comprises an electronic amplifier component configured to increase power of the auscultated sound signal and generate the amplified auscultated sound signal.
  • the amplifier unit comprises the electronic amplifier component configured to increase audio power of the auscultated sound signal and generate the amplified auscultated sound signal.
  • the amplifier unit, amplifier component or the electric amplifier component is provided as two-port electronic circuit that uses electric power from a power supply to increase the amplitude of the auscultated signal applied to an input terminal of the amplifier unit, amplifier component or the electric amplifier component.
  • the amplifier unit, amplifier component or the electric amplifier component is arranged to produce an amplified auscultated sound signal having proportionally increased amplitude.
  • the amplified auscultated sound signal is outputted via an output terminal of the amplifier unit, amplifier component or the electric amplifier component.
  • Amplification level of the amplifier unit, amplifier component or the electric amplifier component is determined by gain.
  • the gain is determined by the ratio of output voltage, current, or power to input voltage, current, or power.
  • the amplifier unit, amplifier component or the electric amplifier component is configured to provide power gain greater than one.
  • the amplifier unit is configured to adjust sound volume level of the auscultated sound signal as a response to adjusting the amplification level of the amplifier unit.
  • the amplification level of the amplifier unit is configured to determine amount of amplification, or the gain, between the input terminal and the output terminal of the amplifier unit, amplifier component or the electric amplifier component.
  • the amplification of the auscultated sound signal is configured to amplify or adjust the sound volume level of the auscultated sound signal based on the amplification level.
  • the amplifier unit, the amplifier component or the electric amplifier component in configured to amplify or adjust the sound volume level of the auscultated sound signal.
  • the amplified auscultated sound signal has an amplified or adjusted sound volume level.
  • the amplifier unit, the amplifier component or the electric amplifier component is configured to adjust the sound volume level of the auscultated sound signal as a response to adjusting the amplification of the auscultated sound signal based on the movement of the chestpiece detected with the movement sensor.
  • the chestpiece comprises two or more movement sensors. Two or more movement sensors may be configured detect different movements of the chestpiece.
  • the two or more movement sensors are operatively connected to the amplifier unit.
  • the movement sensor is an accelerometer.
  • the accelerometer is a micro-electro- mechanical system [MEMS] accelerometer.
  • MEMS accelerometer is small component having high accuracy.
  • the movement sensor is a gyroscope.
  • the gyroscope is a MEMS gyroscope.
  • the MEMS gyroscope is a small component having high accuracy.
  • the movement sensor is a magnetometer.
  • the magnetometer is a MEMS magnetometer or a MEMS magnetic field sensor.
  • the MEMS magnetometer is a small component having high accuracy.
  • the chestpiece comprises two or more of the following: the accelerometer, gyroscope and the magnetometer.
  • the movement sensor is configured to detect rotation of the chestpiece
  • the amplifier unit is configured to adjust the amplification level of the amplifier unit based on the detected rotation chestpiece.
  • rotating the chestpiece is configured adjust the amplification level of the amplifier unit. Therefore, rotating the chestpiece enables adjusting the sound volume level of the auscultated sound signal.
  • Detecting rotation of the chestpiece with the movement sensor is advantageous as it enables adjusting the amplification level without pressing the chestpiece against patient body during diagnosis or moving the chestpiece along the patient body during examination. Thus, erroneous sounds may be minimized or mitted during adjusting the amplification level.
  • the body of the chestpiece comprises an outer front surface arranged to be placed against the patient body.
  • the movement sensor is configured to detect rotation of the chestpiece around a chestpiece axis extending perpendicular to the outer front surface.
  • the movement sensor is configured to detect rotation of the chestpiece around a chestpiece axis extending transversely to the outer front surface.
  • the chestpiece axis may be for example in an angle of 45 to 90 degrees to the outer front surface.
  • the audio chamber is provided in connection with the outer front surface. Therefore, auscultated sounds are captured with the chestpiece via the outer front surface.
  • the amplification level may be adjusted by keeping the chestpiece in place against the patient body and by rotating the chestpiece around the chestpiece axis.
  • the amplification level, and the sound volume level may be easily adjusted with one hand and during the diagnosis without considerable disruption of the diagnosis.
  • the body of the chestpiece comprises an outer front surface arranged to be placed against the patient body.
  • the outer front surface is provided with a diaphragm.
  • the movement sensor is configured to detect rotation of the chestpiece around a chestpiece axis extending perpendicular to the diaphragm or surface thereof.
  • the diaphragm may stay on the patient skin at the desired location during adjusting the amplification level.
  • the movement sensor is configured to detect rotation of the chestpiece around a chestpiece axis extending transversely to the diaphragm.
  • the chestpiece axis may be for example in an angle of 45 to 90 degrees to the diaphragm or surface thereof.
  • the diaphragm is arranged to form a front chamber wall of the audio chamber.
  • the diaphragm is arranged to form at least part of the outer front surface of the body of the chestpiece.
  • the diaphragm is further arranged to close the audio chamber at the outer front surface of the chestpiece. Accordingly, the diaphragm is arranged between the chamber space of the audio chamber and outside of the chestpiece.
  • the diaphragm is provided as a flexible diaphragm.
  • the diaphragm is made of flexible material. Flexibility of the diaphragm enables the diaphragm to move or vibrate as a response to body sounds of the patient when the diaphragm is placed against the patient body.
  • the movement or vibration of the diaphragm generates acoustic pressure waves into the audio chamber which are further detected with the first microphone.
  • the movement sensor is configured to detect rotation of the chestpiece in a first rotation direction, and the amplifier unit is configured to increase the amplification level of the amplifier unit based on the detected rotation chestpiece in the first rotation direction.
  • the movement sensor is further configured to detect rotation of the chestpiece in a second rotation direction, and the amplifier unit is configured to decrease the amplification level of the amplifier unit based on the detected rotation chestpiece in the second rotation direction.
  • the amplification level in configured to be adjusted according to the rotation direction of the chestpiece. This allows increasing and decreasing the amplification level of the amplifier unit, and the sound volume level, based on the rotation direction of the chestpiece.
  • the movement sensor is configured to detect rotation of the chestpiece in a first rotation direction around the chestpiece axis, and the amplifier unit is configured to increase the amplification level of the amplifier unit based on the detected rotation chestpiece in the first rotation direction around the chestpiece axis.
  • the movement sensor is further configured to detect rotation of the chestpiece in a second rotation direction around the chestpiece axis, and the amplifier unit is configured to decrease the amplification level of the amplifier unit based on the detected rotation chestpiece in the second rotation direction around the chestpiece axis.
  • the movement sensor is configured to generate a chestpiece movement signal based on the movement of the chestpiece detected with the movement sensor
  • the amplifier unit is configured to adjust amplification level of the amplifier unit based on the chestpiece movement signal.
  • the movement sensor is configured to generate a first chestpiece movement signal based on the rotation of the chestpiece in the first rotation direction detected with the movement sensor, and the amplifier unit is configured to increase the amplification level of the amplifier unit based on the first chestpiece movement signal.
  • the movement sensor is further configured to generate a second chestpiece movement signal based on the rotation of the chestpiece in the second rotation direction detected with the movement sensor, and the amplifier unit is configured to decrease the amplification level of the amplifier unit based on the second chestpiece movement signal.
  • the movement sensor is configured to generate a first chestpiece movement signal based on the rotation of the chestpiece in the first rotation direction around the chestpiece axis detected with the movement sensor, and the amplifier unit is configured to increase the amplification level of the amplifier unit based on the first chestpiece movement signal.
  • the movement sensor is configured to generate a second chestpiece movement signal based on the rotation of the chestpiece in the second rotation direction around the chestpiece axis detected with the movement sensor, and the amplifier unit is configured to decrease the amplification level of the amplifier unit based on the second chestpiece movement signal.
  • the movement sensor is configured to detect extent of the movement of the chestpiece and the amplifier unit is configured adjust to amplification level based on the detected extent of the movement of the chestpiece.
  • the movement sensor is configured to detect extent of the movement of the chestpiece, the movement sensor is configured to generate the chestpiece movement signal based on the extent of the movement of the chestpiece detected with the movement sensor, and the amplifier unit is configured to adjust amplification level of the amplifier unit based on the chestpiece movement signal.
  • the movement sensor is configured to detect extent of the rotation of the chestpiece and the amplifier unit is configured adjust to amplification level based on the detected extent of the rotation of the chestpiece.
  • the movement sensor is configured to detect extent of the rotation of the chestpiece, the movement sensor is configured to generate the chestpiece movement signal based on the extent of the rotation of the chestpiece detected with the movement sensor, and the amplifier unit is configured to adjust amplification level of the amplifier unit based on the chestpiece movement signal.
  • the amplifier unit is configured to adjust the amplification level in proportion to the extent of movement or rotation of the chestpiece detected with the movement sensor. This enables, adjusting the amplification level to a desired value by moving or rotating the chestpiece.
  • the movement sensor is configured to detect extent of the rotation of the chestpiece in the first rotation direction.
  • the movement sensor is configured to generate the first chestpiece movement signal based on the extent of the rotation of the chestpiece in the first rotation direction detected with the movement sensor, and the amplifier unit is configured to increase the amplification level of the amplifier unit based on the first chestpiece movement signal.
  • the movement sensor is further configured to detect extent of the rotation of the chestpiece in the second rotation direction.
  • the movement sensor is configured to generate the second chestpiece movement signal based on the extent of the rotation of the chestpiece in the second rotation direction detected with the movement sensor, and the amplifier unit is configured to decrease the amplification level of the amplifier unit based on the second chestpiece movement signal.
  • the amplifier unit is configured to adjust the amplification level in proportion to the extent and direction of rotation of the chestpiece detected with the movement sensor. This enables, adjusting the amplification level to a desired value by rotating the chestpiece to a desired direction and desired extent.
  • the movement sensor is configured to detect extent of the rotation of the chestpiece in the first rotation direction around the chestpiece rotation axis.
  • the movement sensor is configured to generate the first chestpiece movement signal based on the extent of the rotation of the chestpiece in the first rotation direction around the chestpiece rotation axis detected with the movement sensor, and the amplifier unit is configured to increase the amplification level of the amplifier unit based on the first chestpiece movement signal.
  • the movement sensor is configured to detect extent of the rotation of the chestpiece in the second rotation direction around the chestpiece rotation axis.
  • the movement sensor is configured to generate the second chestpiece movement signal based on the extent of the rotation of the chestpiece in the second rotation direction around the chestpiece rotation axis detected with the movement sensor, and the amplifier unit is configured to decrease the amplification level of the amplifier unit based on the second chestpiece movement signal.
  • the amplifier unit is configured to adjust the amplification level in proportion to the extent and direction of rotation of the chestpiece around chestpiece axis detected with the movement sensor. This enables, adjusting the amplification level to a desired value by rotating the chestpiece around the chestpiece axis to a desired direction and desired extent.
  • the movement sensor is configured to generate a chestpiece movement signal based on the extent of the movement of the chestpiece detected with the movement sensor
  • the amplifier unit is configured to adjust amplification level of the amplifier unit based on the chestpiece movement signal.
  • the movement sensor is configured to generate a first chestpiece movement signal based on the extent of the rotation of the chestpiece in the first rotation direction detected with the movement sensor, and the amplifier unit is configured to increase the amplification level of the amplifier unit based on the first chestpiece movement signal.
  • the movement sensor is configured to generate a second chestpiece movement signal based on the extent of the rotation of the chestpiece in the second rotation direction detected with the movement sensor, and the amplifier unit is configured to decrease the amplification level of the amplifier unit based on the first chestpiece movement signal.
  • the movement sensor is configured to generate a first chestpiece movement signal based on the extent of the rotation of the chestpiece in the first rotation direction around the chestpiece axis detected with the movement sensor, and the amplifier unit is configured to increase the amplification level of the amplifier unit based on the first chestpiece movement signal.
  • the movement sensor is configured to generate a second chestpiece movement signal based on the extent of the rotation of the chestpiece in the second rotation direction around the chestpiece axis detected with the movement sensor, and the amplifier unit is configured to decrease the amplification level of the amplifier unit based on the first chestpiece movement signal.
  • the movement sensor is configured to detect extent of the movement of the chestpiece by detecting an initial orientation of the chestpiece and extent of change of the orientation of the chestpiece in relation to the initial orientation.
  • the movement of the chestpiece is compared to the initial orientation and the chestpiece movement signal is generated based on the movement of the chestpiece relative to the initial orientation.
  • the initial orientation is further used to detect the extent of the movement of the chestpiece in relation to the initial orientation.
  • the movement sensor is configured to detect extent of the rotation of the chestpiece by detecting an initial orientation of the chestpiece and extent of change of the orientation of the chestpiece in relation to the initial orientation.
  • the rotation of the chestpiece is compared to the initial orientation and the chestpiece movement signal is generated based on the rotation of the chestpiece relative to the initial orientation.
  • the initial orientation is further used to detect the extent of the rotation of the chestpiece in relation to the initial orientation.
  • the movement sensor is configured to detect rotation of the of the chestpiece in the first rotation direction by detecting an initial orientation of the chestpiece and extent of change of the orientation of the chestpiece in the first rotation direction in relation to the initial orientation.
  • the movement sensor is configured to detect rotation of the of the chestpiece in the second rotation direction by detecting extent of change of the orientation of the chestpiece in the second rotation direction in relation to the initial orientation.
  • the rotation of the chestpiece in the first rotation direction is compared to the initial orientation and the first chestpiece movement signal is generated based on the rotation of the chestpiece in the first rotation direction relative to the initial orientation.
  • the initial position is further used to detect the extent of the rotation of the chestpiece in the first rotation direction in relation to the initial orientation.
  • the rotation of the chestpiece in the second rotation direction is compared to the initial orientation and the second chestpiece movement signal is generated based on the rotation of the chestpiece in the second rotation direction relative to the initial orientation.
  • the initial position is further used to detect the extent of the rotation of the chestpiece in the second rotation direction in relation to the initial orientation.
  • the chestpiece comprises an activation switch operatively connected to the movement sensor.
  • the activation switch comprises a first switching state in which the amplifier unit is configured to adjust the amplification level of the amplifier unit as response to the movement detected with the movement sensor, and a second switching state in which adjusting the amplification level of the amplifier unit is prevented.
  • the activation switch is a power switch of the chestpiece.
  • the power switch may be a button or the like mechanical switch or an electronic switch and touch switch.
  • the power switch is configured to enable power to the components of the chestpiece, and to the amplifier unit and the movement sensor.
  • the activation switch comprises a proximity sensor configured to detect human tissue in close proximity.
  • the proximity sensor is configured to detect patient body or skin in close proximity of the chestpiece or the outer front surface of the chestpiece and set the activation switch to the first switching state.
  • the proximity sensor is configured detect user hand tissue or skin in close proximity of the chestpiece or the outer front surface of the chestpiece and set the activation switch to the first switching state.
  • the activation switch is configured to be set activation switch to the second switching state.
  • the movement sensor is configured to detect or determine the initial orientation of the chestpiece as a response to switching the activation switch to the first switching state.
  • the orientation of the chestpiece upon switching the activation switch to the first switching state is configured to represent the initial orientation.
  • the chestpiece comprises an indicator module operatively connected to the amplifier unit and configured to provide visual or audio indication of the amplification level of the amplifier unit.
  • the indictor module is configured provide visual or audio indication of the amplification level of the amplifier unit as response to the amplification level of the amplification unit.
  • the chestpiece comprises an indicator module operatively connected to the amplifier unit and configured to provide visual or audio indication of the sound volume level of the amplified auscultated sound signal.
  • the indictor module is configured provide visual or audio indication of the sound volume level provided by the amplifier unit as response to the amplification level of the amplification unit.
  • the indictor module may comprise one or more indicator lights or an indicator display configured to provide visual indication of the amplification level or the sound volume level.
  • indictor module may comprise one or more indicator speakers configured to provide audio indication of the amplification level or the sound volume level.
  • the chestpiece comprises a wireless communication module configured to transmit the auscultated sound signal from the chestpiece to an external receiver.
  • the chestpiece is provided as a separate wireless device enabling remote analysis and also convenient use without sound tubes.
  • the wireless communication module comprises a short-range wireless communication module, or a Bluetooth communication module, or a Wi-Fi communication module.
  • the wireless communication module enables providing a data transfer connection between the chestpiece and a user device, such as mobile user device, computer, server or headphones.
  • the wireless communication module maybe any known or future wireless communication module utilizing any wireless communication protocol for data transfer without departing the present invention.
  • the chestpiece may further comprises a processing unit.
  • the processing unit may be configured to receive the movement signal or the first and second movement signals from the movement sensor.
  • the processing unit may further be configured to generate amplification instructions based on the received the movement signal or the first and second movement signals.
  • the amplification instructions are further received in the amplifier unit from the processing unit.
  • the amplifier unit is further configured to adjust the amplification level based on the amplification instructions.
  • the amplifier unit is configured to adjust the amplification level based on the movement signal or the first and second movement signals.
  • the wireless communication module is connected to the processing unit and configured to receive the auscultated sound signal from the processing unit.
  • the present invention also relates to an electronic stethoscope.
  • the electronic stethoscope comprises a chestpiece.
  • the chestpiece comprises an audio chamber for detecting auscultated sound from a patient body, a first microphone provided in connection with the sound chamber for converting the auscultated sound into an auscultated sound signal, and a movement sensor configured to detect movement of the chestpiece.
  • the electronic stethoscope comprises an amplifief unit configured to amplify the auscultated sound signal and to generate an amplified auscultated sound signal.
  • the movement sensor is operatively connected to the amplifier unit, and the amplifier unit is configured to adjust amplification level of the amplifier unit as a response to the movement or rotation of the chestpiece detected with the movement sensor to generate the amplified auscultated sound signal.
  • the electronic stethoscope further comprises an external user device comprising a speaker configured to emit the amplified auscultated sound signal.
  • external user device is configured to receive the amplified auscultated sound signal from the chestpiece.
  • the external user device comprises the speaker configured to emit the amplified auscultated sound signal.
  • the amplification level of the auscultated sound signal in the amplifier unit is adjusted as a response to the movement or rotation of the chestpiece detected with the movement sensor.
  • the chestpiece of the electronic stethoscope comprises a wireless communication module configured to transmit in wireless manner from the chestpiece the amplified auscultated sound signal.
  • the wireless chestpiece enables adjusting the amplification level of the auscultated sound signal in the amplifier unit is adjusted as a response to the movement of the chestpiece detected with the movement sensor, as there is no sound tube or earplugs hindering the movement of the chestpiece.
  • the external user device is a mobile user device or a computer configured to receive the amplified auscultated sound signal from the chestpiece in wireless manner.
  • the mobile user device or the computer is configured to emit the auscultated sounds of the amplified auscultated signal with the speaker of the mobile user device or the computer.
  • the external user device is an audio output device configured to receive the amplified auscultated sound signal from the chestpiece in wireless manner.
  • the audio output device may be speaker device, headphones of the like.
  • the audio output device is configured to emit the auscultated sounds of the amplified auscultated sound signal.
  • the audio output device comprises one or more speakers.
  • the external user device is the mobile user device or the computer configured to receive the amplified auscultated sound signal or the output data from the chestpiece in wireless manner.
  • the mobile user device or the computer is further configured to transmit the amplified auscultated sound signal to the audio output device.
  • the mobile user device or the computer may be configured to transmit the amplified auscultated sound signal or the output data to the audio output device in wireless manner by utilizing a wireless communication protocol.
  • the wireless communication protocol may be a short-range wireless communication protocol.
  • the chestpiece of the electronic stethoscope is a chestpiece as disclosed above.
  • the movement sensor is configured detect movement or rotation of the chestpiece and generate a chestpice movement signal based on the detected movement of the chestpiece.
  • the movement signal is configured to be received in a processing unit of the chestpiece and the processing unit is configured to generate an amplification signal based on the movement signal.
  • the amplifier unit is configured to receive the amplification signal and adjust the amplification level of the amplifier unit as a response to the received amplification signal.
  • amplifier unit is configured to receive the movement signal and generate the amplification signal based on the movement signal.
  • the amplifier unit is further configured to adjust the amplification level of the amplifier unit as a response to the amplification signal.
  • the amplifier unit is provided to chestpiece or to the external user device.
  • the movement signal is configured to be received in the processing unit of the chestpiece or in the amplifier unit provided to the chestpiece or in the processing unit of the external user device or in the amplifier unit provided to the ecternal user device.
  • the processing unit of the chestpiece is configured to generate the amplification signal based on the movement signal, or the processing unit of the external user device is configured to generate an amplification signal based on the movement signal.
  • the amplifier unit in the chestpiece is configured to receive the amplification signal from the processing unit of the chestpiece
  • the amplifier unit in the external user device is configured to receive the amplification signal from the processing unit of the chestpiece or from the processing unit of the external user device.
  • the present invention further relates to use of a movement sensor in a chestpiece of a wireless electronic stethoscope for adjusting amplification level of an amplifier unit based on the movement or rotation of the chestpiece detected with the movement sensor, the amplifier unit being configured to amplify auscultated sound signal generated with a first microphone of the chestpiece.
  • An advantage of the invention is that the amplification level of the auscultated sound signal in the amplifier unit is adjusted as a response to the movement or rotation of the chestpiece detected with the movement sensor. Thus, no pressure needs to be applied to the chestpiece and the adjustment may be carried out during the use of the chestpiece without interrupting the diagnosis.
  • Figures 1 and 2 show schematic outer views of a chestpiece of an electronic stethoscope
  • Figure 3 shows a schematic cross-sectional view of the chestpiece of figures 1 and 2;
  • FIGS. 4 and 5 show a schematic views of the chestpiece figures 1 and 2 according to the present invention
  • Figure 6 shows a schematic top view of the chestpiece of figures 4 and 5.
  • FIG. 1 shows schematically a side view of one embodiment of a chestpiece 10 for an electronic stethoscope.
  • the chestpiece 10 is configured to provide auscultated sounds of a patient body, for example heart, lungs, bowel, arteries and veins.
  • the chestpiece 10 comprises a body 12.
  • the body comprises an outer top surface 16, an outer front surface 14 and outer side surface(s) 18 extending between the outer top surface 16 and the outer front surface 14.
  • the outer front surface 14 is configured to be placed against a patient body or skin during health examination.
  • the outer front surface 14 is provided with a diaphragm 15 forming at least part of the outer front surface 14 of the body 12.
  • Figure 2 shows schematically an end view of the chestpiece 10 in a direction towards the outer front surface 14.
  • the diaphragm 15 is provided to the outer front surface 14.
  • the chestpiece 10 has circular cylinder shape, as shown in figures 1 and 2.
  • the chestpiece 10 may also have a different three-dimensional shape, such as oval cylindrical shape, or rectangular or polygonal cylindrical shape.
  • Figure 3 shows schematically a cross-sectional view of the chestpiece 10 and a schematic configuration of an electronic stethoscope utilizing the chestpiece 10.
  • the chestpiece 10 comprises an audio chamber 20 inside the body 12.
  • the audio chamber 20 is defined by audio chamber walls 22 and the diaphragm 15.
  • the diaphragm 15 is arranged to separate the audio chamber 20 form the outside of the chestpiece 10 at the outer front surface 14.
  • the audio chamber 20 is provided in connection with the outer front surface 14.
  • the diaphragm 15 has a planar shape.
  • the diaphragm 15 extends parallel to the outer front surface 14.
  • the diaphragm 15 When the outer front surface 14 is placed against patient skin, the diaphragm 15 is also placed against the patient skin.
  • the diaphragm 15 is provided as a flexible diaphragm. Flexibility of the diaphragm 15 enables the diaphragm 15 to move or vibrate as a response to body sounds of the patient when the outer front surface 14 and the diaphragm 15 is placed against the patient skin. The movement or vibration of the diaphragm 15 generates acoustic pressure waves into the audio chamber 20.
  • the audio chamber 20 has bell-shaped form, as shown schematically in figure 3.
  • the diaphragm 15 or the outer front surface 14 is arranged to provide a bottom of the bell-shaped form.
  • the end 24 of the bell-shaped audio chamber 20 is provided opposite the diaphragm 15.
  • the bell-shaped form of the audio chamber 20 provides mechanical amplification of sound, sound waves or pressure waves generated with the diaphragm 15.
  • the audio chamber 20 may also have a different shape.
  • the audio chamber 20 may for example have a tapering or converging shape towards the top end 24 of the audio chamber 20.
  • the top end 24 is arranged opposite the diaphragm 15.
  • the shape of the audio chamber 20 is arranged to provide amplification of the auscultated sounds towards the top end 24 of the audio chamber 20.
  • the diaphragm 15 may be omitted.
  • the audio chamber 20 is open to the outer front wall 14 of the chestpiece 10.
  • the chestpiece 10 comprises a first microphone 30 arranged in connection with the audio chamber 20.
  • the first microphone is configured to capture auscultated sounds or the pressure waves provided by the diaphragm 15 and the audio chamber 20, and further convert the auscultated sounds into an auscultated sound signal.
  • the auscultated sound signal generated by the first microphone 30 is an electronic auscultated sound signal.
  • the first microphone 30 is arranged to in connection with the audio chamber 20 such that the first microphone 30 is arranged to capture the auscultated sounds from the audio chamber 20.
  • the first microphone 30 is arranged inside the audio chamber 20. Alternatively, the first microphone 30 is arranged to the audio chamber walls 22.
  • the first microphone 30 is arranged in connection with the top end 24 of the audio chamber 20.
  • the first microphone 30 is arranged to the top end 24 of the audio chamber 20.
  • the top end 24 of the audio chamber 20 comprises sound opening and the first microphone 30 is arranged to or in connection with the sound opening of the top end 24.
  • the first microphone 30 is arranged to form the top end 24 of the audio chamber 20.
  • the first microphone 30 may be any kind of microphone device.
  • the chestpiece 10 comprises also a second microphone 32.
  • the second microphone 32 is provided as an ambient microphone.
  • the second microphone 32 is arranged capture or detect ambient sounds from the surroundings of the chestpiece 10.
  • the second microphone 32 is arranged to generate an ambient sound signal or convert the ambient sounds into the ambient sound signal.
  • the second microphone 32 and the ambient sound signal is utilized for filtering the ambient sounds from the auscultated sound signal.
  • ambient sounds or interference sounds do not disturb the diagnosis carried out based on the auscultated sounds.
  • the second microphone 32 may also be omitted.
  • the chestpiece 10 further comprises a processing unit 40.
  • the processing unit 40 comprises one or more processors, and one or more memory elements.
  • a software program comprising instructions for operating the chestpiece and the components thereof is stored to the one or more memory elements.
  • the processing unit may comprise a read only memory (ROM) and/or a random access memory (RAM).
  • ROM read only memory
  • RAM random access memory
  • a basic input output system (BIOS) is stored in the ROM.
  • the RAM is used as a work area of the processing unit or as a temporary storage apparatus for loading a software program for operating the chestpiece 10 and the components thereof.
  • the processing unit 40 or software program stored therein may comprise instructions for processing the auscultated sound signal into auscultated sound data.
  • the processing may comprise for example filtering and/or amplifying the auscultated sound signal and generating the auscultated sound data.
  • the processing unit 40 or software program stored therein is further configured to comprise instructions for operating the first microphone 30.
  • the processing unit 40 or software program stored therein is further configured to comprise instructions for operating the second microphone 32.
  • the chestpiece 10 further comprises a power unit 44.
  • the power unit 40 comprises a battery.
  • the battery is preferably a rechargeable battery.
  • the battery unit 44 further comprises a charging module arranged to charge the battery.
  • the charging module is preferably provided as a wireless charging module arranged to charge the battery in wireless manner.
  • the wireless charging module comprising a charging coil operatively connected to the battery.
  • the chestpiece 10 further comprises a communication module 42 configured carry out data transfer between the chestpiece 10 and an external device.
  • the communication module 42 is preferably a wireless communication module 42 configured to utilize a wireless communication protocol to carry out data transfer between the chestpiece 10 and the external device.
  • the wireless communication module 42 comprises a short-range wireless communication module configured to utilize wireless short-range communication protocol to carry out the data transfer.
  • the wireless communication module 42 may be a Bluetooth communication module configured to utilize Bluetooth communication protocol for data transfer.
  • the wireless communication module 42 may also be a Wi-fi communication module configured to utilize Wi-Fi communication protocol for data transfer.
  • the first microphone 30 is connected or operatively connected to the processing unit 40.
  • the processing unit 40 is configured to receive the auscultated sound signal from the first microphone 30.
  • the second microphone 32 is connected or operatively connected to the processing unit 40.
  • the processing unit 40 is configured to receive the ambient sound signal from the second microphone 32.
  • the communication module 42 is connected or operatively connected to the processing unit 40.
  • the communication module 42 is configured to transfer data from the chestpiece 10 or from the processing unit 40 to the external device.
  • the communication module 42 is further configured to receive data to the chestpiece 10 or to the processing unit 40 from the external device.
  • the power unit 44 is configured to provide power to the processing unit 40, the communication module 42 and to the first and second microphones 30, 32.
  • the power unit 44 may be connected to the processing unit 40, the communication module 42 and to the first and second microphones 30, 32.
  • the chestpiece further comprise a circuit board 50.
  • the processing unit 40, communication module 42, power unit 44, and the first and second microphones 30, 32 are provided to or connected to the circuit board 50.
  • the chestpiece 10 is connected to the external device with the communication module 42 via a communication connection 100, as shown on figure 3.
  • the external device is a mobile user device 104 such as a module phone or a tablet.
  • the external device may also be a computer 106 such as a laptop.
  • the external device may also be an external audio device 102 such as headphones or a speaker.
  • the chestpiece 10 is directly connected to the external device 102, 104, 106 via the communication module 42 by utilizing the communication protocol. Accordingly, the chestpiece 10 and the communication module 42 thereof is configured to transfer the auscultated sound signal or the auscultated sound data to the external device 102, 104, 106.
  • the external device 102, 104, 106 also comprises a device communication module configured to receive the auscultated sound signal or the auscultated sound data from the chestpiece 10 via the communication connection 100.
  • the external device is an external server comprising a server communication module configured to carry out data transfer with the chestpiece 10.
  • the mobile user device 104, the external audio device 102 or the computer 106 is arranged in data transfer connection with the external server.
  • the mobile user device 104, the external audio device 102 or the computer 106 is arranged to receive the auscultated sound signal or the auscultated sound data from the external server.
  • the external audio device 102 is connected with the mobile user device 104 or to the computer 106, and the mobile user device 104 or the computer is connected with the external audio device 102.
  • the mobile user device 104 or the computer 106 or the external audio device 102 is configured to emit the auscultated sounds of the auscultated signal or auscultated sound data derived from the auscultated signal with a speaker device provided to the mobile user device 104 or the computer 106 or the external audio device 102. Accordingly, chestpiece 10 enables the auscultated sounds to be listened on site where the patient is or at distant location over the communication connection 100.
  • the chestpiece 10 further comprises an amplifier unit 70 comprising an amplifier and configured to provide amplification of the auscultated sound signal into an amplified auscultated sound signal.
  • the amplifier unit 70 comprises any known or future amplifier capable of amplifying the auscultated sound signal or capable of sound volume level of the auscultated sound signal.
  • the amplifier unit 70 is configured to provide amplification of the sound volume level of the auscultated sound signal.
  • the amplifier unit 70 is configured to generate amplified auscultated sound signal having amplified sound volume level.
  • the amplifier unit 70 may comprise an electronic amplifier component configured to increase power of the auscultated sound signal and generate the amplified auscultated sound signal.
  • the amplifier unit 70 may comprise the electronic amplifier component configured to increase audio power of the auscultated sound signal and generate the amplified auscultated sound signal.
  • the amplifier unit 70 is configured to adjust sound volume level of the auscultated sound signal as a response to adjusting the amplification level of the amplifier unit 70.
  • the amplifier unit 70 is provided as an adjustable amplifier unit 70 configured to adjust the amplification level of the amplifier unit 70.
  • the magnitude of amplification of the auscultated sound signal in the amplifier unit 70 is provided adjustable.
  • the amplifier unit 70 comprises an adjustable amplifier component configured to adjust the amplification level of the amplifier unit 70.
  • the magnitude of amplification of the auscultated sound signal in the amplifier unit 70 is provided adjustable.
  • the chestpiece according to the present invention further comprises a movement sensor 74, or one or more movement sensors 74.
  • the movement sensor 74 is an accelerometer, gyroscope or magnetometer, or some other movement sensor.
  • the movement sensor 74 is configured to detect movement or rotation of the chestpiece 10.
  • the movement sensor 74 is configured to detect movement or rotation of the chestpiece 10 and generate a movement signal based on the detected movement of the chestpiece 10.
  • the movement sensor is operatively connected to the amplifier unit 70.
  • the amplifier unit 70 of the amplifier component thereof is configured to adjust amplification level of the amplifier unit 70 or the amplifier component based on the movement or rotation of the chestpiece 10 detected with the movement sensor 74.
  • the amplifier unit 70 or the amplifier component thereof is configured to adjust amplification level of the amplifier unit 70 or the amplifier component based on the movement or rotation of the chestpiece 10 detected with the movement sensor 74.
  • the amplifier unit 70 is configured to receive the movement signals] of the movement sensor 74 as input and adjust the amplification level based on the received movement signal.
  • the movement sensor 74 is connected to the processing unit 40.
  • the processing unit 40 is configured to the receive the movement signals] from the movement sensor 74.
  • the processing unit 40 is further configured to generate amplification instructions based on the received movement signal(s).
  • the amplifier unit 70 is configured to receive the amplification instructions from the processing unit 40 as input and adjust the amplification level based on the received amplification instructions.
  • the amplifier unit 70 or the amplifier component thereof is configured to adjust amplification level of the amplifier unit 70 or the amplifier component based on the movement or rotation of the chestpiece 10 detected with the movement sensor 74.
  • FIGS. 4 and 5 show schematically one embodiment of the present invention.
  • the movement sensor 74 is configured to detect rotation of the chestpiece 10, and the amplifier unit 70 is configured to adjust amplification level of the amplifier unit 70 based on the detected rotation chestpiece 10.
  • the chestpiece 10 comprises chestpiece axis A.
  • the chestpiece axis A is an imaginary axis.
  • the movement sensor 74 is configured to detect rotation of the chestpiece 10 around the chestpiece axis A.
  • the chestpiece axis A is arranged to extend perpendicularly to the outer front surface 14 of the chestpiece 10 and/or perpendicularly to the diaphragm 15 provided to the outer front surface 14.
  • the chestpiece axis A may arranged to extend transversely, for example in an angle of 45 to 90 degrees, to the outer front surface 14 of the chestpiece 10 and/or to the diaphragm 15, or surface thereof, provided to the outer front surface 14.
  • the chestpiece 10 has a circular cylinder shape and the chestpiece axis A is provided as the central axis of the circular cylinder chestpiece 10.
  • chestpiece axis A may also be another axis through the chestpiece 10, preferably another axis extending perpendicularly to the outer front surface 14 and/or the diaphragm 15.
  • the movement sensor 74 is configured to generate a chestpiece movement signal based on the movement of the chestpiece 10 detected with the movement sensor 74.
  • the amplifier unit 70 is configured to adjust amplification level of the amplifier unit 70 based on the chestpiece movement signal.
  • the movement sensor 74 is configured to detect extent of the rotation or rotation angle of the chestpiece 10 and the amplifier unit 70 is configured adjust to amplification level based on the detected extent of the movement of the chestpiece 10.
  • the movement sensor 74 is configured to generate the chestpiece movement signal based on the extent of the rotation or rotation angle of the chestpiece 10 detected with the movement sensor 74, and the amplifier unit 70 is configured to adjust amplification level of the amplifier unit 70 based on the chestpiece movement signal.
  • the chestpiece movement signal is indicative of the extent of rotation or rotation angle of the chestpiece 10.
  • the movement sensor 74 is further configured to detect rotation of the chestpiece 10 in a first rotation direction R around the chestpiece axis A.
  • the amplifier unit 70 is configured to increase the amplification level of the amplifier unit 70 based on the detected rotation chestpiece 10 in the first rotation direction R around the chestpiece axis A.
  • the movement sensor 74 is configured to generate a first chestpiece movement signal based on the rotation of the chestpiece 10 in the first rotation direction R around the chestpiece axis A detected with the movement sensor 74, and the amplifier unit 70 is configured to increase the amplification level of the amplifier unit 70 based on the first chestpiece movement signal.
  • the first chestpiece movement signal is indicative of the rotation direction of the chestpiece 10 in the first rotation direction R.
  • the movement sensor 74 is also configured to detect rotation of the chestpiece 10 in a second rotation direction L around the chestpiece axis A, and the amplifier unit 70 is configured to decrease the amplification level of the amplifier unit 70 based on the detected rotation chestpiece 10 in the second rotation direction L around the chestpiece axis A.
  • the movement sensor 74 is configured to generate a second chestpiece movement signal based on the rotation of the chestpiece 10 in the second rotation direction L around the chestpiece axis A detected with the movement sensor 74, and the amplifier unit 70 is configured to decrease the amplification level of the amplifier unit 70 based on the second chestpiece movement signal.
  • the second chestpiece movement signal is indicative of the rotation direction of the chestpiece 10 in the first rotation direction R.
  • the movement sensor 74 is configured to detect extent of the rotation or the rotation angle of the chestpiece 10 in the first rotation direction R around the chestpiece axis A.
  • the movement sensor 74 is configured to generate the first chestpiece movement signal based on the extent of the rotation of the chestpiece 10 in the first rotation direction R detected with the movement sensor 74.
  • the amplifier unit 70 is configured to increase the amplification level of the amplifier unit 70 based on the first chestpiece movement signal.
  • the first chestpiece movement signal is indicative of the rotation direction of the chestpiece 10 and the extent of rotation or the rotation angle of the chestpiece 10 in the first rotation direction R.
  • the movement sensor 74 is configured to detect extent of the rotation of the chestpiece 10 in the second rotation direction L around the chestpiece axis A.
  • the movement sensor 74 is configured to generate the second chestpiece movement signal based on the extent of the rotation of the chestpiece 10 in the second rotation direction L detected with the movement sensor 74.
  • the amplifier unit 70 is configured to decrease the amplification level of the amplifier unit 70 based on the second chestpiece movement signal.
  • the second chestpiece movement signal is indicative of the rotation direction of the chestpiece 10 and the extent of rotation or the rotation angle of the chestpiece 10 in the second rotation direction R.
  • FIG. 6 shows schematically the chestpiece 10 in the direction of the outer top surface 16.
  • the chestpiece 10 comprises an activation switch 82 provided to the outer top surface 16.
  • the activation switch 82 is operatively connected to the movement sensor 74 and/or the amplifier unit 70.
  • the activation switch 82 comprises a first switching state in which the amplifier unit 70 is configured to adjust the amplification level of the amplifier unit 70 as response to the movement detected with the movement sensor 74, and a second switching state in which adjusting the amplification level of the amplifier unit 70 is prevented.
  • the activation switch 82 is provided as user operable switch, such as a button or touch pad.
  • the activation switch 82 is configured to be set optionally to the first and second switching states.
  • the activation switch 82 is provided as an automatic switch.
  • the automatic switch may be operatively connected to the movement sensor 74 such that movement of the chestpiece 10 is configured to set the activation switch to the first switching state as a response to detecting the movement with the movement sensor 74.
  • the activation switch 82 is configured to be set to the second switching state as response to detecting immobility of the chestpiece 10 for a predetermined deactivation time.
  • the activation switch 82 comprises a proximity sensor.
  • the proximity sensor is configured to detect human tissue or skin in close proximity of the outer top surface 16 or the chestpiece 10.
  • the proximity sensor is configured to set the activation switch to the first switching state as a response to detecting the human tissue or skin in close proximity of the outer top surface 16 or the chestpiece 10.
  • the proximity sensor is configured to set the activation switch to the second switching state as a response to absence of the human tissue or skin in close proximity of the outer top surface 16 or the chestpiece 10.
  • the chestpiece 10 or the outer top surface 16 thereof comprises a light indicator module 90 comprising one or more light indicators 92.
  • the light indicator module 90 is operatively connected to the amplifier unit 70 and configured to provide visual indication of the amplification level of the amplifier unit 70 or the sound volume level of the amplified auscultated sound signal.

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne un pavillon (10) pour un stéthoscope électronique, un stéthoscope électronique et l'utilisation d'un capteur de mouvement dans le pavillon (10). Le pavillon (10) comprend un corps (12), une chambre sonore (20) à l'intérieur du corps (12), un premier microphone (32) en liaison avec la chambre sonore (20) et conçu pour générer un signal sonore d'auscultation et une unité d'amplification (70) conçue pour amplifier le signal sonore d'auscultation. Le pavillon (10) comprend en outre un capteur de mouvement (74) conçu pour détecter un mouvement du pavillon (10), le capteur de mouvement (74) étant connecté de manière fonctionnelle à l'unité d'amplification (70) pour ajuster le niveau d'amplification de l'unité d'amplification (70) en réponse au mouvement détecté avec le capteur de mouvement (74) afin de générer un signal sonore d'auscultation amplifié.
PCT/EP2023/080201 2022-10-31 2023-10-30 Pavillon pour stéthoscope, stéthoscope électronique et utilisation associée WO2024094601A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20225972 2022-10-31
FI20225972 2022-10-31

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Publication Number Publication Date
WO2024094601A1 true WO2024094601A1 (fr) 2024-05-10

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Application Number Title Priority Date Filing Date
PCT/EP2023/080201 WO2024094601A1 (fr) 2022-10-31 2023-10-30 Pavillon pour stéthoscope, stéthoscope électronique et utilisation associée

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WO (1) WO2024094601A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080013747A1 (en) * 2006-06-30 2008-01-17 Bao Tran Digital stethoscope and monitoring instrument
JP2014117572A (ja) * 2012-12-19 2014-06-30 Sharp Corp 生体音収集装置
US20160045183A1 (en) * 2013-04-05 2016-02-18 Samsung Electronics Co., Ltd. Electronic stethoscope apparatus, automatic diagnostic apparatus and method
CN107184232A (zh) * 2017-07-10 2017-09-22 山东朗朗智能科技发展有限公司 台式数字智能听诊器主机和台式数字智能听诊器
US10709353B1 (en) * 2019-10-21 2020-07-14 Sonavi Labs, Inc. Detecting a respiratory abnormality using a convolution, and applications thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080013747A1 (en) * 2006-06-30 2008-01-17 Bao Tran Digital stethoscope and monitoring instrument
JP2014117572A (ja) * 2012-12-19 2014-06-30 Sharp Corp 生体音収集装置
US20160045183A1 (en) * 2013-04-05 2016-02-18 Samsung Electronics Co., Ltd. Electronic stethoscope apparatus, automatic diagnostic apparatus and method
CN107184232A (zh) * 2017-07-10 2017-09-22 山东朗朗智能科技发展有限公司 台式数字智能听诊器主机和台式数字智能听诊器
US10709353B1 (en) * 2019-10-21 2020-07-14 Sonavi Labs, Inc. Detecting a respiratory abnormality using a convolution, and applications thereof

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