CN212729838U - Monitor and monitor system - Google Patents

Abstract

The utility model discloses a monitor and monitor system, wherein this monitor includes stethoscope interface, sound processor and display module, the stethoscope interface be used for with the output port of stethoscope be connected to receive the sound signal that comes from the stethoscope collection, sound processor with stethoscope interface connection for convert sound signal into sound wave spectrum signal, display module is connected with sound processor, is used for showing the sound wave spectrum image that corresponds according to sound wave spectrum signal. Utility model discloses usable monitor carries out image display to the sound signal who comes from the stethoscope collection, avoids the doctor only to adopt the error that the listening mode brought, and the spectrogram also can regard as the instrument of helping the doctor to judge fast.

Description

Monitor and monitor system

Technical Field

The utility model relates to a medical care field, concretely relates to monitor and monitor system.

Background

The stethoscope is a common tool for doctors, and has important application value in the aspects of respiratory system disease and cardiovascular disease diagnosis. With the development of more than two hundred years, the auscultation method has become an important diagnostic method for respiratory diseases.

After medical personnel wear protective clothing, traditional stethoscope has been unable to use. Doctors urgently need but cannot use the stethoscope, and a large number of patients are delayed and misdiagnosed. Some electronic stethoscopes are available in the market at present, but auscultation under the condition that a doctor wears protective clothing is not considered, and the structure of the stethoscope and the auscultation mode of the doctor are similar to those of the past stethoscopes. The conventional electronic stethoscope also fails.

Therefore, the existing stethoscope adopts a wireless stethoscope mode, and sounds acquired by a stethoscope probe are wirelessly transmitted to earphones worn by a doctor, so that the doctor can auscultate under the condition of wearing protective clothing.

How to correctly and quickly judge whether the tracheal cannula is in the airway needs a doctor to listen to the throat, lung, stomach and the like of a patient. However, in the emergency or intensive care unit of a hospital, the environment is relatively noisy and the physician is often affected by listening to the cannula. In addition, even if a doctor is required to maintain a high-strength work for a long time in the case of vigorously treating an infectious disease patient, the doctor may be uncomfortable even if the doctor wears the earphone for a long time. In addition, in the infectious disease ward, it is an urgent problem to avoid the spread of virus and cross infection in the whole process of auscultation of patients.

SUMMERY OF THE UTILITY MODEL

The utility model provides a monitor and monitor system for solve above problem.

The utility model discloses an embodiment discloses a monitor, this monitor include stethoscope interface, sound processor and display module, the stethoscope interface be used for with the output port connection of stethoscope to the sound signal that the receipt comes from the stethoscope to collect, sound processor with stethoscope interface connection for convert sound signal into sound wave spectrum signal, display module is connected with sound processor, is used for showing the sound wave spectrum image that corresponds according to sound wave spectrum signal.

By adopting the technical scheme, the monitor can be used for displaying images of sound signals collected by the stethoscope, so that errors caused by the fact that a doctor only adopts a listening mode are avoided, and the spectrogram can also be used as a tool for assisting the doctor to judge quickly. The stethoscope interface is additionally arranged in the monitor, an additional display device for displaying sound signals is not required to be additionally arranged in the ward, and the ward space is saved. Especially in the infectious ward, because the monitor is positioned in a relatively fixed area in the ward and the disinfection mode of the monitor is mature at present, the monitor does not form an infection source and can not be transferred to other areas, thereby avoiding cross infection.

According to another specific embodiment of the present invention, the embodiment of the present invention discloses a monitor, further comprising a sound receiving portion, the sound receiving portion is directly connected to the stethoscope interface for receiving sound signals and converting the sound signals into sound electrical signals, the sound signals are sound vibration waves; the sound processor is connected with the sound receiving part and is used for converting the sound electric signal into a sound spectrum signal; the stethoscope interface is communicated with the output port through a pipeline.

According to another embodiment of the present invention, a monitor is disclosed, wherein the sound receiving portion is a PVDF piezoelectric patch, the sound processor includes a charge amplifying circuit, and the PVDF piezoelectric patch is connected to the charge amplifying circuit.

According to the utility model discloses a monitor, sound processor still includes filtering amplification circuit, analog-to-digital conversion module and master control MCU, and filtering amplification circuit is connected with the sound receiving part, and analog-to-digital conversion module and filtering amplification circuit are connected, and master control MCU is connected with analog-to-digital conversion module.

According to another embodiment of the present invention, the present invention discloses a monitor, wherein the sound signal is an electrical sound signal collected and converted by the stethoscope, and the sound processor is used for receiving the electrical sound signal and converting the electrical sound signal into a sound spectrum signal; the stethoscope interface is electrically connected with the output port through a connecting wire.

According to the utility model discloses a further embodiment, the utility model discloses an embodiment discloses a monitor, and sound processor includes filtering amplification circuit, analog-to-digital conversion module and master control MCU, filtering amplification circuit and stethoscope interface connection, analog-to-digital conversion module with filtering amplification circuit connects, master control MCU with analog-to-digital conversion module connects.

According to another embodiment of the present invention, the present invention discloses a monitor, which further comprises a microphone bias circuit, the microphone bias circuit is connected to the sound processor and the stethoscope interface, respectively, and the sound processor is configured to receive the sound electrical signal from the microphone bias circuit.

According to another embodiment of the present invention, the present invention discloses a monitor, wherein the sound processor comprises a main control MCU directly connected to the stethoscope interface.

According to the utility model discloses a further concrete implementation mode, the utility model discloses an embodiment discloses a monitor, connecting wire has first end and second end, first end and output port connection, the second end with stethoscope interface connection, first end with the second end is equipped with waterproof plug.

According to the utility model discloses a further embodiment, the utility model discloses an embodiment discloses a monitor, and connecting wire has connect the shielded wire.

According to another embodiment of the present invention, the present invention discloses a monitor, which further comprises a storage module and an audio output unit connected to the sound processor, wherein the storage module is used for storing sound signals, and the audio output unit is used for outputting sounds.

According to another embodiment of the present invention, the present invention discloses a monitor, wherein the number of the stethoscope interface is 5 or more.

According to another embodiment of the present invention, a monitor is disclosed, the monitor further comprising a multiplexer, the multiplexer is connected to the sound processor and the stethoscope interface respectively, for transmitting signals from the stethoscope interface to the sound processor.

According to another embodiment of the present invention, an embodiment of the present invention discloses a monitor, which can also monitor one or more of the following physiological parameters: electrocardio, heart rate, blood oxygen, non-invasive blood pressure, cardiac output, body temperature, respiration, pulse and blood gas.

According to another embodiment of the present invention, an embodiment of the present invention discloses a monitor, wherein the sound spectrum image is a sound wave pattern, an amplitude envelope pattern or a time-frequency pattern.

The utility model also provides a monitor system, including foretell monitor and stethoscope.

Adopt above-mentioned technical scheme, can realize being connected of stethoscope and monitor to with gathering sound signal in the stethoscope and showing with the form of spectrum image, can regard as appurtenance, the doctor of being convenient for carries out the snap judgments according to the spectrogram.

According to another embodiment of the present invention, an embodiment of the present invention discloses a monitor system, wherein the stethoscope is replaceable.

According to the utility model discloses another embodiment, the utility model discloses an embodiment discloses a monitor system, and the stethoscope includes: and a sound source contact part for being attached to the body to be auscultated, an end of the sound source contact part including a suspension film.

According to the utility model discloses a further embodiment, the utility model discloses an embodiment discloses a monitor system, and the sound source contact site includes: the stethoscope auscultation device comprises an operation part and a contact part, wherein the operation part is used for a user to operate the sound source contact part, the contact part is used for being attached to an auscultated body, and the distance from the top surface of the operation part to the bottom surface of the contact part is 20 mm-30 mm.

According to another embodiment of the present invention, an embodiment of the present invention discloses a monitor system, wherein the distance between the top surface of the operation portion and the bottom surface of the contact portion is between 20mm and 30mm in the direction perpendicular to the contact surface of the contact portion.

In accordance with another embodiment of the present invention, a monitor system is disclosed, wherein a sound processor is configured to process sound signals in a frequency range of 20Hz to 50 Hz.

Drawings

FIG. 1 is a schematic view of a monitor connected to a stethoscope according to an embodiment of the present invention;

FIG. 2 is a first schematic view of a monitor connected to a stethoscope according to another embodiment of the present invention;

FIG. 3 is a second schematic structural view of a monitor connected to a stethoscope according to another embodiment of the present invention;

FIG. 4 is a third schematic view of the monitor of another embodiment of the present invention connected to a stethoscope;

FIG. 5 is a fourth schematic view of the monitor of the present invention connected to a stethoscope;

FIG. 6 is a fifth schematic view of the monitor connected to the stethoscope according to another embodiment of the present invention;

fig. 7 is a first perspective view of a stethoscope according to an embodiment of the present invention;

fig. 8 is a second perspective view of the stethoscope according to the embodiment of the present invention;

fig. 9 is a side view of a stethoscope according to an embodiment of the present invention.

Detailed Description

The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element to which the present invention is directed must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

A monitor is a device or system that measures and controls physiological parameters of a patient, compares them to known settings, and sends an alarm if an excessive level is present. The general monitor needs to continuously monitor physiological parameters of patients for 24 hours, detect the change trend, indicate the imminent situations, provide the emergency treatment and treatment basis for doctors, and minimize the complications to achieve the purposes of relieving and eliminating the illness state. The monitor is used for measuring and monitoring physiological parameters, and monitoring and processing the condition of the medicine and before and after the operation. The clinical application range of the monitor mainly comprises: during and after surgery, trauma care, coronary heart disease, critically ill patients, neonates, premature infants, hyperbaric oxygen chambers, delivery rooms, and the like. In an infectious ward, a monitor is also an indispensable medical tool.

To this end, as shown in fig. 1-6, the present invention provides a monitor 20, comprising a stethoscope interface 21, a sound processor and a display module, wherein the stethoscope interface 21 is configured to be connected to the output port 5 of the stethoscope to receive sound signals collected by the stethoscope, the sound processor is connected to the stethoscope interface 21 to convert the sound signals into sound spectrum signals, and the display module is connected to the sound processor to display corresponding sound spectrum images according to the sound spectrum signals. The displayed sound spectrum image may be, for example, a waveform graph, a frequency spectrum graph, an amplitude envelope graph, a time-frequency graph, and the like of sound, and a specific image type may be specifically displayed according to clinical needs. When a doctor carries out the work of the tracheal intubation, whether the tracheal intubation is in place or not can be determined by observing the sound oscillogram. Because the utility model discloses a stethoscope interface 21 has been add to the monitor, establishes with stethoscope 10 and is connected, can collect heart sound, lung sound, intestines sound, phlegm sound etc. through the stethoscope, then show in monitor 20.

Firstly, the sound of a patient detected by the stethoscope is displayed by the monitor, and then the sound is displayed in an image mode, when emergency operations such as intubation and the like are carried out, a doctor can be assisted to judge whether the tracheal intubation is in place or not by directly displaying a spectrogram on the monitor, so that the instability and errors of auscultation by using ears only under emergency conditions are avoided, and the interference of other external sounds is reduced.

Secondly, in areas such as emergency room or intensive care unit, the monitor is essential medical instrument, through add the stethoscope interface on the monitor, need not additionally to increase the display device who cooperates the stethoscope, has practiced thrift areas such as emergency room, intensive care unit's space. In addition, in an infectious disease ward, a special stethoscope probe can be arranged for each patient, and the monitor is placed in a fixed area and cannot be randomly transferred to other positions, so that the risk of cross infection is reduced.

In addition, the stethoscope has important clinical functions and values. For example, in cardiac diagnosis, the rate of coronary occlusion must be above 70% -75% to cause the change in the ECG signal, but in practice, coronary occlusion at 25% can cause the change in the heart sound signal. In the diagnosis of lung and bronchus, there is a damp rale sound in bronchitis, bronchopneumonia, hematogenous disseminated tuberculosis and pulmonary edema; when the lung is congested with blood, pulmonary edema and bronchopneumonia, there are damp luoyin at the bottom of the two lungs; pneumonia, pulmonary tuberculosis, bronchiectasis, lung abscess, lung cancer and pulmonary hemorrhage, there is a damp Luo Yin on one side. Therefore, the monitor is additionally provided with a display for displaying sound waves from the stethoscope, and can be used as an effective reference tool.

As regards the sound signal, it may be a sound wave conducted directly by the stethoscope. Specifically, referring to fig. 1, the monitor further includes a sound receiving part directly connected to the stethoscope interface 21 for receiving a sound signal and converting it into an electrical signal. In the present embodiment, the sound signal is a sound vibration wave, i.e. the sound receiving portion directly receives the sound conducted by the stethoscope. The sound processor is connected with the sound receiving part, the sound receiving part transmits the converted sound electric signal to the sound processor, and the sound processor converts the sound electric signal into a sound spectrum signal. Since the sound receiving part receives the sound itself, the stethoscope interface and the output port can be communicated by the pipe 4 to complete the conduction of the sound. The tube 4 in this embodiment may be a flexible tube that is connected to the stethoscope 10 or may be part of the stethoscope 10 and that is inserted into the stethoscope interface 21. The hose connection has a sealing effect, and a waterproof effect can be achieved. In case of an infectious ward, the hose is arranged to block the virus from entering the monitor through the conduit 4.

Further, the sound receiving unit may be a microphone such as a microphone. The present embodiment is preferably a high molecular polymer polyvinylidene fluoride (PVDF) piezoelectric sheet 22. The PVDF piezoelectric sheet 22 has high sensitivity and a waterproof function. In the existing stethoscope, although the PVDF piezoelectric plate is used as the sound pick-up, the sensitivity can be improved, but the problem of excessive noise caused by sound pick-up behind the PVDF piezoelectric plate is inevitable in the stethoscope. In this embodiment, the PVDF piezoelectric patch 22 is placed in the monitor as a sound receiving portion, which can not only utilize the sensitivity of the PVDF piezoelectric patch 22, but also use the monitor behind the PVDF piezoelectric patch 22, so that there is no excessive noise in the monitor, thereby avoiding the generation of noise. In addition, the electric signal generated after being received by the PVDF piezoelectric piece is processed by a charge amplifying circuit so as to enhance the signal.

In the above embodiments, the sound processor comprises a master MCU for converting the sound electrical signal into a sound spectral signal. In addition, the sound processor also includes an analog-to-digital conversion module. The analog-to-digital conversion module can be connected with the master control MCU or integrated in the master control MCU. If the analog-to-digital conversion module is a high-precision AD, a filtering and amplifying circuit is not needed. The master MCU can be provided with high precision AD such as C8051F350, BH66F5242, ADUC844BS62 and the like. In other embodiments, the sound processor may also include a filtering and amplifying circuit, which has a function of reducing noise and the like. The filtering and amplifying circuit can be integrated in the main control MCU, and can also be connected with the analog-to-digital conversion module. The analog-to-digital conversion module may be specifically configured in the form of an analog-to-digital conversion chip.

Since the monitor 20 receives the conducted sound waves, the sound waves are converted and processed by the monitor 20, and the stethoscope 10 does not need to be provided with other structures. The stethoscope 10 only needs to be in contact with the body to be auscultated to collect and conduct the sound. Thus, the structure of the stethoscope 10 is simplified, the cost thereof is greatly reduced, and thus the stethoscope can be used as a consumable. The stethoscope special for each patient is arranged, and the patient can be discarded after the patient is no longer needed and is no longer used on other patients, so that cross infection is avoided.

In other embodiments, with respect to the sound signals received by the monitor, it may be the electrical signals into which the stethoscope converts the received sound wave signals. Specifically, referring to fig. 2, the sound signal in this embodiment is an electrical signal collected and converted by the stethoscope 10, and the sound processor is used for receiving the sound electrical signal and converting the sound electrical signal into a sound spectrum signal. The stethoscope interface 21 is thus electrically connected to the output port 5 via the connecting wires 6. That is, the stethoscope 10 itself is provided with a sound pickup having a sound collecting and converting function, and may be, for example, a microphone 7, and the collected sound is converted into an electrical sound signal by the microphone 7 and then transmitted to the monitor. This embodiment is suitable for use in environments where the connection channel between the stethoscope 10 and the monitor 20 is long or noisy. The adapter sets up in the stethoscope that is nearer apart from the sound source, reduces the decay of signal on the one hand, and on the other hand reduces the introduction of manic.

The sound processor in the above embodiments may be connected directly to the stethoscope interface 21, or alternatively, the sound processor may be connected to a microphone bias circuit which in turn is connected to the stethoscope interface. The microphone in the stethoscope may use an electret MIC, or MEMS microphone. If the electret MIC is adopted, a microphone bias circuit connected with the electret MIC can be arranged in the monitor and used for processing the sound electric signals. The microphone bias circuit is connected with the stethoscope interface and the sound processor respectively, and the sound processor can receive sound electrical signals from the microphone bias circuit. If an MEMS microphone is used, the microphone has three wires, namely a power line, a signal line and a ground line, and no microphone bias circuit is required.

Further, the sound processing in the above embodiments includes a master control MCU, configured to convert the sound electrical signal into a sound spectrum signal. The master MCU can be provided with high precision AD such as C8051F350, BH66F5242, ADUC844BS62 and the like. Or the sound processor also comprises an analog-to-digital conversion module which is electrically connected with the main control MCU and used for performing analog-to-digital conversion on the sound electrical signals from the stethoscope. The sound processor may further include a filter amplifier circuit connected to the analog-to-digital conversion module and electrically connected to the microphone bias circuit. In this embodiment, the analog-to-digital conversion module may further be an analog-to-digital conversion chip, or the microphone bias circuit, the filtering amplification circuit, and the analog-to-digital conversion module may all be integrated in the main control MCU.

In yet another embodiment, as shown in fig. 3, the sound processor includes a master MCU, which is not connected to the analog-to-digital conversion module and the filter amplifier, and is directly connected to the stethoscope interface 21, and the monitor 20 is electrically connected to the stethoscope 10 through the connection wire 6, and directly receives and directly processes the sound electrical signal from the stethoscope. The microphone 7 in the stethoscope 10 in this embodiment may be configured as a digital MEMS microphone providing a digital output in Pulse Density Modulation (PDM) or 12S format, the output signal being directly connected to the master MCU on the monitor 20, further avoiding electromagnetic interference from large devices in the environment and enabling miniaturization of the device. In addition, as shown in fig. 4, when the microphone 7 in the stethoscope 10 is an electret MIC, a filtering and amplifying circuit and an analog-to-digital conversion module may be further disposed in the stethoscope 10, and then the converted electrical signal is directly transmitted to the main control MCU in the monitor 20. Or, the stethoscope has a sound source contact part 1, the sound source contact part 1 is, for example, a stethoscope head, the filter amplifier circuit and the analog-to-digital conversion module are disposed in a connecting device between the stethoscope head and the monitor, and are connected with the main control MCU through a digital interface, which may be an I2S bus, a PCM bus, a CAN bus, a USB bus, an IIC bus, an SPI bus, an RS232 bus, a TTL serial bus or a 485 bus. The connection form can be various forms such as cables, optical fibers, optical coupling, magnetic coupling and the like.

Further, in the above embodiments, the connecting wire has a first end and a second end, the first end is connected to the output port of the stethoscope, and the second end is connected to the stethoscope interface. Because adopt connecting wire to carry out electric connection between stethoscope and the monitor, can set up waterproof plug at first end and second end to improve waterproof nature.

Further, the connecting wires in the above embodiments are connected with shielded wires. The shielding wire is wrapped on the connecting wire and is connected with GND arranged on the monitor or a power wire on the monitor or other power wires or ground wires to form a loop, so that electromagnetic interference is avoided.

In the above embodiments, the monitor 20 further includes a storage module connected to the sound processor and an audio output portion, the storage module is used for storing the sound signals, for example, the sound spectrum signals can be stored and retrieved when necessary for displaying the sound spectrum, or the sound electrical signals can be stored and retrieved when necessary for performing sound auscultation, or both the sound spectrum signals and the sound electrical signals can be stored. To facilitate review or review of the collected stethoscope signals when needed. In this embodiment, the storage module is connected to the main control MCU. The audio output portion is, for example, an audio output port for outputting sound from the stethoscope 10. The audio output part can be connected with the main control MCU and used for outputting sound after signal amplification, conversion, drying removal and the like, and also can be directly connected with the filtering and amplifying circuit to receive the sound signal after the signal is processed by the filtering and amplifying circuit without analog-to-digital conversion, so that the distortion degree is reduced. In the present embodiment, by providing the audio output portion, not only can the sound of the stethoscope 10 be visualized, but also the monitor 20 can be used as an output port for doctors to use when doctors are required to perform judgment in a listening manner.

As shown in fig. 5 and 6, in the above embodiments, the number of the stethoscope interface 21 is 5 or more, and accordingly, 5 or more stethoscopes 10 can be simultaneously connected to the monitor 20. For example, in the five-point auscultation method, 5 stethoscopes 10 can be simultaneously placed at five designated positions on an auscultated body (e.g., a patient) for real-time monitoring of sound signals at the five positions, thereby performing real-time monitoring. In practice, more than 5 stethoscope interfaces can be arranged according to specific requirements. For example, one monitor can be used to monitor two or more patients while displaying the sound waveforms of the two patients.

As shown in fig. 5, when the sound signals received by the monitor 20 from the stethoscopes are sound vibration wave signals, in this embodiment, five PVDF piezoelectric plates 22 are connected to five stethoscope interfaces 21, and are respectively and correspondingly provided with five charge amplifying circuits and five filter amplifying circuits, and the five stethoscope interfaces 21 are respectively connected to five stethoscopes 10 through the output ports 5. The analog-to-digital conversion module is provided with a plurality of interfaces, can be simultaneously connected with five filtering and amplifying circuits and is connected with the main control MCU. Further, in this embodiment, a multiplexer (not shown) may be disposed in the monitor. The multiplexer is connected with the five PVDF piezoelectric sheets and the charge amplifying circuit, so that the sound electric signal from the PVDF piezoelectric sheets is transmitted to the charge amplifying circuit through the multiplexer. Therefore, under the condition of having a plurality of stethoscope interfaces and a plurality of PVDF piezoelectric pieces, the monitor only needs to be provided with one charge amplifying circuit and one filtering amplifying circuit, and can realize signal transmission through the selective on-off of a plurality of paths in the multiplexer so as to process and display sound signals from the plurality of stethoscope interfaces.

In another embodiment, as shown in fig. 6, when the sound signals received by the plurality of stethoscope interfaces 21 in the monitor 20 from the stethoscopes are sound electrical signals, a sound collecting part is installed in the stethoscopes 10, for example, electret MICs are respectively installed in the plurality of stethoscopes 10 for converting the collected plurality of sound sources into a plurality of sound electrical signals. The connecting wire 6 is connected with the 5 stethoscope interfaces 21 at the output port, and the sound and electric signals are transmitted to the monitor 20 through the connecting wire 6. A plurality of microphone bias circuits respectively connected to the stethoscope interface 21 may be disposed in the monitor 20, each microphone bias circuit is connected to a corresponding filter amplifier circuit, and a sound signal from each stethoscope interface is transmitted to the main control MCU through the analog-to-digital conversion module. The monitoring in the same example embodiment may also include a multiplexer coupled to each of the microphone bias circuits and to the filter amplifier circuit such that the acoustic signals from the microphone bias circuits are passed through the multiplexer to the filter amplifier circuit. Therefore, under the condition of having a plurality of stethoscope interfaces and a plurality of microphone bias circuits, the monitor 20 only needs to have one filtering and amplifying circuit, and can realize signal transmission through the selective connection and disconnection of a plurality of paths in the multiplexer, so as to process and display the sound signals from the plurality of stethoscope interfaces. Or, the multiplexer can be directly connected with a plurality of stethoscope interfaces, the microphone bias circuit is connected with the multiplexer and the filter amplifying circuit, and signals are sequentially transmitted to the microphone bias circuit and the filter amplifying circuit through the multiplexer, so that the monitor only needs to be provided with one microphone bias circuit and one filter amplifying circuit.

It can be known from the above embodiments that the multiplexer can be directly connected to the sound processor and the stethoscope interface, or a PVDF piezoelectric patch or a microphone bias circuit can be directly connected to the stethoscope interface, and then the multiplexer can be directly connected to the PVDF piezoelectric patch or the microphone bias circuit, as long as the multiplexer transmits the signal from the stethoscope interface to the sound processor, so that the multiplexer can be selectively switched on and off, and the structure of the sound processor is simplified.

In the embodiments described above, the monitor 20, as a device capable of measuring physiological parameters of a patient, can generally monitor a variety of parameters, such as: electrocardio, heart rate, blood oxygen, non-invasive blood pressure, cardiac output, body temperature, respiration, pulse, blood gas, etc. The monitor 20 of the present embodiment is provided with a device for monitoring the sound signal from the stethoscope on the basis of monitoring one or more of the above physiological parameters, and is further used as a viewing aid.

The utility model also provides a monitor system, include as above monitor 20 in each embodiment, in addition, still include stethoscope 10, stethoscope 10 structure can refer to the structure that the above-mentioned embodiment described. Namely, fig. 1-6 illustrate a monitor system formed by connecting a stethoscope and a monitor.

Further, the stethoscope is replaceable, and is configured specially for different patients. After the patient recovers, the configured stethoscope can be discarded. Due to the fact that the stethoscope is in close contact with a patient, particularly in an infectious ward, viruses or bacteria can be carried in the stethoscope, and the stethoscope with the special purpose can effectively avoid cross infection. The monitor belongs to a relatively fixed device and has mature disinfection measures, so that the stethoscope and the monitor are combined for use, instead of being connected with earphones and a conventional computer, the pollution to other connecting devices is reduced. The structural arrangement described in the above embodiments can also be referred to in the structural arrangement of the stethoscope, so as to further simplify the structure of the replaceable stethoscope and reduce the cost.

Referring to fig. 1-6, the stethoscope 10 in the monitor system of the present invention includes: a sound source contact part 1 for being attached to an auscultated body (e.g., a patient), the sound source contact part 1 being, for example, an auscultation probe.

When the sound signal received by the monitor 20 is a sound vibration wave signal, the pipe 4 can be directly used to connect the sound source contact portion 1 of the stethoscope 10 and the stethoscope interface 21, and the pipe 4 can be used as a sound transmission channel. Preferably, the conduit is a hose, i.e. a material that is deformable by hand pinching, such as a latex hose or a rubber hose. The stethoscope is inserted into the stethoscope interface 21 through the hose, so that the stethoscope has the effects of sealing, preventing water and preventing viruses from entering the monitor.

When the sound signal received by the monitor is a sound electrical signal, a sound pickup may be provided in the stethoscope to convert the sound collected by the sound source contact part 1 into an electrical signal. The sound pick-up may be, for example, a microphone 7. The filter amplifier circuit and the analog-to-digital conversion module may be disposed in the stethoscope 10, so that the monitor directly connected to the stethoscope interface may be a main control MCU. In other embodiments, the filter amplifier circuit and the analog-to-digital conversion module can be disposed in the monitor 20, and the microphone bias circuit for processing the signal transmitted by the microphone can be disposed in the monitor 20, so as to further simplify the structure of the stethoscope. The stethoscope interface 21 of the monitor 20 can be adjusted according to the signal Type transmitted by the stethoscope, and if the signal Type is digital, the stethoscope interface can be USB Type-a, USB Type-B, USB Type-C, Micro USB, Lightning, etc., and if the signal Type is analog, the stethoscope interface includes but is not limited to an audio interface. In this embodiment, the stethoscope 10 and the monitor 20 are electrically connected by a connecting wire 6, and the stethoscope can be powered by the connecting wire, or a wire can be additionally provided to power the stethoscope.

The stethoscopes in the above embodiments may be provided in an alternative manner.

As shown in fig. 7 to 9, as an embodiment of the present invention, the stethoscope further includes a sound source transmission unit 3. Optionally, the stethoscope further includes a metal connection pipe 2, one end of the metal connection pipe 2 is connected to the sound source contact part 1, and the other end is connected to the sound source transmission part 3. The sound source transmission unit 3 is used to transmit sound waves to a monitor, or may transmit sound waves to a sound collection unit (e.g., a microphone) and a sound processing unit (e.g., a filter amplifier) inside the stethoscope. And the monitor 20 displays the spectrogram of the sound, thereby realizing the auscultation isolated from the patient under the condition that the doctor wears the protective clothing, and being safe and not influencing the auscultation.

Further, referring to fig. 7 to 9, the sound source contact part 1 includes: an operation part 15 and a contact part 16 connected, the sound source transmission part 3 is connected with the operation part 15, the operation part 15 is used for the user to operate the sound source contact part 1, the contact part 16 includes but not limited to a suspension film for being attached to the body to be auscultated, the distance H from the top surface of the operation part 15 to the bottom surface of the contact part 16 is between 20mm and 30mm, including 20mm and 30mm, for example 26 mm. Alternatively, the distance from the top surface of the operating portion 15 to the bottom surface of the contact portion 16 in the direction perpendicular to the contact surface of the contact portion 16 (indicated by the X direction in fig. 9) is between 20mm and 30 mm.

Since the contact portion 16 is very noisy when the doctor operates the operation portion 15 for auscultation, the noise is caused by the interference behind the sound source contact portion 1 when the contact portion 16 moves against the body of the patient and the sound source contact portion 1, for example, the sound of the joint movement of the fingers of the user at the operation portion 15 is collected by the microphone in the stethoscope or the PVDF piezoelectric sheet in the monitor. By setting the above distance range from the top surface of the operation portion 15 to the bottom surface of the contact portion 16, noise can be effectively reduced, so that the intensity of an audio signal is stable, and a received sound source is clear, thereby facilitating diagnosis.

Alternatively, referring to fig. 7, the operation portion 15 is "narrow on top and wide on bottom" and the "narrow" portion 152 is for the user to manipulate the operation portion 15, on the one hand, to facilitate the user's operation, and on the other hand, to reduce the weight of the sound source contact portion 1. The "wide" portion 151 is connected to the contact portion 16, and the shapes thereof match. In this embodiment, the "wide" portion 151 and the contact portion 16 are both cylindrical.

Further, the operation portion 15 is made of a metal material. The metal material may be copper, stainless steel, or other metal material. The operation part 15 is made of metal materials and further has the noise reduction effect, so that the strength of the audio signal is more stable, the received sound source is clearer, and the diagnosis is more facilitated.

Further, the monitor 20 of the monitor system of the present invention is used for processing the sound of the frequency band from 20Hz to 50 Hz. For example, sound of a frequency band of 20Hz to 50Hz, including frequency bands of 20Hz and 50Hz, may be collected at the time of sound collection. After the arrangement, the stethoscope can prevent the sounds of low frequency bands from being collected by the stethoscope 10, and avoid misdiagnosis of doctors. The sound collection can be done in a stethoscope or by a microphone in the monitor 20. Further optionally, the utility model discloses can gather the sound of 20Hz to 10000Hz frequency channel. Thus, the sound processing in the monitor can process the sound of the frequency band of 20Hz to 10000Hz, thereby displaying the spectrogram of the frequency band of 20Hz to 10000 Hz.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, and the specific embodiments thereof are not to be considered as limiting. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims (21)

1. A monitor comprising a stethoscope interface for coupling to an output port of a stethoscope to receive sound signals collected from the stethoscope, a sound processor coupled to the stethoscope interface for converting the sound signals to sound spectra signals, and a display module coupled to the sound processor for displaying corresponding sound spectra images based on the sound spectra signals.

2. The monitor of claim 1, further comprising a sound receiving portion directly connected to the stethoscope interface for receiving the sound signal and converting the sound signal into an electrical sound signal, wherein the sound signal is a sound vibration wave; the sound processor is connected with the sound receiving part and is used for converting the sound electric signal into a sound spectrum signal; the stethoscope interface is communicated with the output port through a pipeline.

3. The monitor as claimed in claim 2, wherein the sound receiving portion is a PVDF piezoelectric patch, and the sound processor includes a charge amplification circuit, and the PVDF piezoelectric patch is connected to the charge amplification circuit.

4. The monitor as claimed in claim 2, wherein the sound processor further comprises a filter amplifier circuit, an analog-to-digital conversion module and a main control MCU, the filter amplifier circuit is connected to the sound receiving portion, the analog-to-digital conversion module is connected to the filter amplifier circuit, and the main control MCU is connected to the analog-to-digital conversion module.

5. The monitor of claim 1, wherein said acoustic signal is an acoustic electrical signal collected and converted by said stethoscope, said sound processor for receiving said acoustic electrical signal and converting it to an acoustic spectroscopic signal; the stethoscope interface is electrically connected with the output port through a connecting wire.

6. The monitor of claim 5, wherein said sound processor comprises a filter amplifier circuit, an analog-to-digital conversion module, and a master MCU, said filter amplifier circuit being connected to said stethoscope interface, said analog-to-digital conversion module being connected to said filter amplifier circuit, said master MCU being connected to said analog-to-digital conversion module.

7. The monitor of claim 5, further comprising a microphone bias circuit coupled to the stethoscope interface and the sound processor, respectively, the sound processor for receiving the acoustic electrical signals from the microphone bias circuit.

8. The monitor of claim 5, wherein the sound processor comprises a master MCU, the master MCU being directly connected to the stethoscope interface.

9. The monitor of claim 5, wherein said connecting wire has a first end and a second end, said first end being connected to said output port, said second end being connected to said stethoscope interface, said first end and said second end being provided with waterproof plugs.

10. The monitor of claim 5, wherein said connecting wires are wired with shielded wires.

11. The monitor of any of claims 1-10, further comprising a memory module coupled to the sound processor for storing the sound signal and an audio output for outputting sound.

12. The monitor of any of claims 1-10, wherein the number of stethoscope interfaces is 5 or more.

13. The monitor of claim 12, further comprising a multiplexer connected to said sound processor and said stethoscope interface, respectively, for communicating signals from said stethoscope interface to said sound processor.

14. The monitor of any of claims 1-10, wherein the monitor is further capable of monitoring one or more of the following physiological parameters: electrocardio, heart rate, blood oxygen, non-invasive blood pressure, cardiac output, body temperature, respiration, pulse and blood gas.

15. The monitor of any of claims 1-10, wherein the sound spectrum image is a sound waveform map, an amplitude envelope map, or a time-frequency map.

16. A monitor system comprising a monitor according to any of claims 1-15 and a stethoscope.

17. The monitor system of claim 16, wherein the stethoscope is replaceable.

18. The monitor system of claim 16, wherein the stethoscope comprises: a sound source contact part for being attached to a body to be auscultated, an end of the sound source contact part including a suspension film.

19. The monitor system of claim 18, wherein the acoustic source contact comprises: the stethoscope comprises an operation part and a contact part, wherein the operation part is connected with the contact part, the operation part is used for a user to operate the sound source contact part, and the contact part is used for being attached to a stethoscope body.

20. The monitor system according to claim 19, wherein the distance from the top surface of the operating portion to the bottom surface of the contact portion in a direction perpendicular to the contact surface of the contact portion is between 20mm and 30 mm.

21. The monitor system of claim 16, wherein the sound processor is configured to process sound signals in the 20Hz to 50Hz frequency band.

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