CN213309877U

CN213309877U - Fetal heart rate instrument device supporting mother heart rate detection

Info

Publication number: CN213309877U
Application number: CN202022004184.2U
Authority: CN
Inventors: 陈沾常
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-06-01
Anticipated expiration: 2030-09-14

Abstract

The utility model provides a support fetus-voice meter device that mother's rhythm of heart detected, including host computer, ultrasonic sensor probe, mother's rhythm of the heart detection module, display screen and speaker, the display screen with the speaker is installed on the host computer, the host computer respectively with ultrasonic sensor probe with mother's rhythm of the heart detection module electric connection, ultrasonic sensor probe is used for detecting the fetus rhythm of the heart, mother's rhythm of the heart detection module is used for detecting mother's rhythm of the heart, ultrasonic sensor probe with mother's rhythm of the heart detection module will detect the data transmission that obtains and give the host computer, and pass through the display screen shows detection data and passes through the speaker is reported and is detected data. The utility model has the advantages that: the utility model discloses can be when the user detects the foetus rhythm of the heart by oneself, synchronous detection mother's rhythm of the heart avoids the user misdetect abdominal blood vessel, thinks the foetus rhythm of the heart with adult's rhythm of the heart mistake, probably misjudges foetus health condition, leads to relevant risk.

Description

Fetal heart rate instrument device supporting mother heart rate detection

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a support fetus-voice meter device that mother's rhythm of heart detected.

Background

Most of the existing Doppler fetal heart meters only support the ultrasonic Doppler principle or other principles to detect the fetal heart rate and do not support the simultaneous detection of the maternal heart rate, and the detection technology of the maternal heart rate mostly uses blood oxygen and electrocardio technology in the field of fetal monitoring.

The blood oxygen technology not only measures heart rate but also measures the blood oxygen saturation, the pregnant woman belongs to healthy people and is not a patient, and the blood oxygen saturation parameter has little significance for the self-test of the pregnant woman at home; the electrocardio is comparatively loaded down with trivial details to use, needs to use the electrode slice, and is not convenient at home use.

At present, a fetal heart rate monitor product integrated by various technologies is a product gap.

The simple detection method for detecting the heart rate adopts a photoplethysmography method for detection, utilizes the proportional change of the hemoglobin concentration in blood to the light absorption rate, increases the hemoglobin content of blood in blood vessels along with the systolic pumping of blood, and can detect the heart rate according to the regular change of the falling of the hemoglobin content during diastole. The metal electrode plates can also be arranged on the machine body and used for contacting a human body to realize the electrocardio detection, and the electrodes can be repeatedly used and are commonly used in some household electrocardio detection equipment.

At present, most fetal heart meters need a user to judge whether measured heartbeat sound belongs to a fetus when in use, a family user probably has no related experience, abdominal artery blood vessels can be misdetected in the use process, signals similar to fetal heartbeat can be generated when the blood vessels are misdetected due to the decision of a Doppler principle, the judgment of the user on the health condition of the fetus can be interfered, and if fetal heart signals cannot be accurately detected in the case of fetal hypoxia, treatment can be delayed, and adverse effects can be brought to the health of the fetus.

SUMMERY OF THE UTILITY MODEL

The utility model provides a support fetal heart rate appearance device that mother's rhythm of heart detected, including host computer, ultrasonic sensor probe, mother's rhythm of the heart detection module, display screen and/or speaker, the display screen and/or the speaker is installed on the host computer, the host computer respectively with ultrasonic sensor probe with mother's rhythm of the heart detection module electric connection, ultrasonic sensor probe is used for detecting the foetus rhythm of the heart, mother's rhythm of the heart detection module is used for detecting mother's rhythm of the heart, ultrasonic sensor probe with the data transmission that mother's rhythm of the heart detection module will detect and obtain gives the host computer, and pass through display screen shows the detected data and passes through the speaker reports the detected data.

As a further improvement of the present invention, the main machine and the ultrasonic sensor probe are mounted together.

As a further improvement of the present invention, the mother heart rate detection module is a PPG sensor, which is installed on the host.

As a further improvement of the utility model, mother's rhythm of the heart detection module is the ECG sensor, the ECG sensor include ECG host system and with first metal electrode and the second metal electrode that ECG host system links to each other, ECG host system is located in the host computer, the host computer is equipped with first metal electrode, the ultrasonic sensor probe periphery is equipped with second metal electrode.

As a further improvement, the host computer still includes ultrasonic receiving frequency-selecting amplification unit, ultrasonic frequency generation unit, demodulation unit, filtering amplification unit, audio processing unit, audio filtering power amplifier unit and ultrasonic sensor drive unit, ultrasonic receiving frequency-selecting amplification unit input with the ultrasonic sensor probe links to each other, ultrasonic receiving frequency-selecting amplification unit output with the demodulation unit links to each other, ultrasonic frequency generation unit output respectively with the demodulation unit with the ultrasonic sensor drive unit links to each other, ultrasonic sensor drive unit output with the ultrasonic sensor probe links to each other, the demodulation unit the filtering amplification unit the audio processing unit audio filtering power amplifier unit the speaker links to each other in proper order.

As a further improvement of the present invention, a howling elimination module is further disposed in the host, the howling elimination module includes a rectifier and low-pass filter, a waveform generator, and a mixer, an output end of the rectifier and low-pass filter is connected to an input end of the mixer, the rectifier and low-pass filter converts the doppler frequency shift audio signal output by the demodulation unit into an audio envelope signal, and the rectifier and low-pass filter outputs the audio envelope signal to the mixer; the output end of the waveform generator is connected with the input end of the frequency mixer, the waveform generator is used for generating waveforms with any audio frequency, and the waveforms generated by the waveform generator and the audio envelope signals are mixed by the frequency mixer to generate converted audio waveforms; the howling eliminating module is connected between the demodulating unit and the filtering amplifying unit, or the howling eliminating module and the audio processing unit are integrated together.

As a further improvement of the present invention, the host computer with the ultrasonic sensor probe is divided, the host computer with connect through the cable between the ultrasonic sensor probe, the ultrasonic sensor probe include the probe fuselage and set up in the ultrasonic sensor sound head of probe fuselage tip.

As a further improvement of the present invention, the mother heart rate detection module is a PPG sensor, which is installed on the host or on the probe body.

As a further improvement of the present invention, the mother heart rate detection module is an ECG sensor, and the ECG sensor includes an ECG main control module, and a first metal electrode and a second metal electrode connected to the ECG main control module; the first metal electrode is arranged at the periphery of the ultrasonic sensor sound head, and the second metal electrode is installed on the host; or the first metal electrode is arranged at the periphery of the ultrasonic sensor sound head, and the second metal electrode is installed on the probe body; or the first metal electrode is arranged on the host machine, and the second metal electrode is arranged on the probe body.

As a further improvement, the fetal heart rate measuring device further comprises a LED lamp and a fan, and the fetal heart rate measuring device further has a function of a charger.

The utility model has the advantages that: the utility model discloses can be when the user detects the foetus rhythm of the heart by oneself, synchronous detection mother's rhythm of the heart avoids the user misdetect abdominal blood vessel, thinks the foetus rhythm of the heart with adult's rhythm of the heart mistake, probably misjudges foetus health condition, leads to relevant risk. If the blood oxygen technology is adopted to detect the heart rate of the mother, the blood oxygen saturation of the mother can be further measured, the blood oxygen content of the mother can be monitored, and the health of the mother and the fetus can be further protected.

Drawings

Fig. 1 is an integrally designed fetal heart rate measuring device of the present invention, wherein the maternal heart rate detecting module is a PPG sensor;

fig. 2 is an integrally designed fetal heart rate apparatus of the present invention, wherein the maternal heart rate detection module is an ECG sensor;

FIG. 3 is a schematic layout of the ultrasound sensor probe and the second metal electrode of FIG. 2;

FIG. 4 is a functional block diagram of an integrated design of a fetal heart monitor apparatus;

FIG. 5 is a pulse timing diagram;

fig. 6 is a schematic diagram of embodiment 2 to solve self-excited howling;

fig. 7 is a schematic diagram of embodiment 3 solving self-excited howling;

fig. 8 is the fetal heart rate measuring device of the present invention, wherein the maternal heart rate detecting module is a PPG sensor, and the PPG sensor is mounted on the host;

fig. 9 is a fetal heart rate measuring device of the present invention, wherein the maternal heart rate detecting module is a PPG sensor, and the PPG sensor is mounted on the probe of the ultrasound sensor;

FIG. 10 is a schematic view of a first arrangement of first and second metal electrodes;

FIG. 11 is a schematic view of a second arrangement of first and second metal electrodes;

FIG. 12 is a schematic view of a third arrangement of first and second metal electrodes;

FIG. 13 is a schematic view of a first arrangement of LED lamps;

fig. 14 is a schematic view of a second arrangement of LED lamps.

Detailed Description

The utility model discloses a support fetal heart appearance device that mother's rhythm of heart detected acquires fetal heart sound and rhythm of the heart for detect the fetal health condition, through synchronous detection mother's rhythm of the heart, avoid the mismeasurement mother's belly blood vessel in the testing process, arouse the erroneous judgement.

The fetal heart monitor device of the utility model comprises a host 1, an ultrasonic sensor probe 2, a mother heart rate detection module, a display screen 3 and/or a loudspeaker 4, the display screen 3 and/or the loudspeaker 4 are/is arranged on the host 1, the host 1 is respectively and electrically connected with the ultrasonic sensor probe 2 and the mother heart rate detection module, the ultrasonic sensor probe 2 is used for detecting the heart rate of the fetus, the maternal heart rate detection module is used for detecting the heart rate of the mother, the ultrasonic sensor probe 2 and the maternal heart rate detection module transmit the detected data (including the fetal heart rate and the maternal heart rate) to the host computer 1, and the detection data is displayed through the display screen 3 and is broadcasted through the loudspeaker 4, namely, the fetal heart sound generated by fetal heart beat is broadcasted through the loudspeaker 4.

In the utility model, the detection data is displayed by the display screen 3 and is broadcasted by the loudspeaker 4, which is only one realization way; another implementation manner is that the host 1 sends the detection data to the smart phone in a wired or wireless manner, and the smart phone displays and broadcasts the detection data.

The fetal heart rate detection method is characterized in that the fetal heart rate is detected by adopting an ultrasonic Doppler principle, the ultrasonic Doppler principle is used for detecting a moving object, the object moving in the belly of a pregnant woman and a mother of the pregnant woman not only comprises fetal heart beat, but also comprises the intestinal peristalsis of the mother of the pregnant woman (a proper filter can be designed to filter signals of the intestinal peristalsis), the blood flow movement of the mother artery (such as abdominal aorta) and the like, the current blood flow movement signals are similar to the signals of the fetal heart beat, the blood flow movement of the mother is easily detected as the fetal heart beat, therefore, the design is carried out while the maternal heart rate is detected, when the ultrasonic sensor probe 2 is consistent with the heart rate detected by a maternal heart rate detection module, the misdetection of the mother by the ultrasonic sensor probe 2 can be judged, the user is.

The utility model discloses a fetus-voice meter device adopts the integrated design, host computer 1 with ultrasonic sensor probe 2 is installed together, and no cable is connected.

As shown in fig. 1, the mother heart rate detection module is a PPG sensor 5, and the host 1 is in a cylindrical shape and is convenient to hold. The ultrasonic sensor probe 2 and the loudspeaker 4 are respectively positioned at two ends of the host 1 in the length direction, the display screen 3 is close to the loudspeaker 4, when the device is conveniently held, the display screen 3 is visible, the PPG sensor 5 is arranged below the display screen 3, the position is convenient for a user to naturally hold the thumb when the user holds the device, and the user can use the device by both left and right hands, at the moment, the PPG sensor 5 measures the volume change of the red blood cells of the thumb and traces the heart rate of the mother, and the held host 1 measures the heart rate of the fetus at the abdomen of the pregnant woman; meanwhile, the blood oxygen protection degree of the mother can be monitored by a reflection type blood oxygen principle.

As shown in fig. 2 and 3, the mother heart rate detection module is an ECG sensor, the ECG sensor includes an ECG main control module, and a first metal electrode 6 and a second metal electrode 7 connected to the ECG main control module, the ECG main control module is located in the host computer 1, the host computer 1 is provided with the first metal electrode 6, and the periphery of the ultrasound sensor probe 2 is provided with the second metal electrode 7. The first metal electrode 6 is arranged at the handheld position of the main machine 1, and when the first metal electrode 6 and the second metal electrode 7 are used for measurement, the hand and the abdomen can be contacted, and the electrocardio detection is realized.

As shown in fig. 4, the host 1 further includes an ultrasonic receiving frequency-selecting amplifying unit 101, an ultrasonic frequency generating unit 102, a demodulating unit 103, a filtering amplifying unit 104, an audio processing unit 105, an audio filtering power amplifying unit 106 and an ultrasonic sensor driving unit 107, the input end of the ultrasonic receiving frequency-selecting amplifying unit 101 is connected with the ultrasonic sensor probe 2, the output end of the ultrasonic receiving frequency-selecting amplifying unit 101 is connected with the demodulating unit 103, the output end of the ultrasonic frequency generation unit 102 is respectively connected with the demodulation unit 103 and the ultrasonic sensor driving unit 107, the output end of the ultrasonic sensor driving unit 107 is connected with the ultrasonic sensor probe 2, the demodulation unit 103, the filtering and amplifying unit 104, the audio processing unit 105, the audio filtering and power amplifying unit 106 and the loudspeaker 4 are connected in sequence.

In the integrally designed fetal heart monitor device, the ultrasonic sensor probe 2 and the loudspeaker 4 are assembled in the main machine 1, and the ultrasonic sensor probe 2 and the loudspeaker 4 are assembled in the same shell, so that the self-excited squeal problem can occur, and the self-excited squeal reason is described as follows: as shown in fig. 4, after an ultrasonic echo signal generated by a moving object detected by the ultrasonic sensor probe 2 is amplified by the ultrasonic receiving frequency-selecting amplifying unit 101, the ultrasonic echo signal and an intrinsic signal of the ultrasonic frequency generating unit 102 enter the demodulating unit 103 at the same time to demodulate a frequency shift signal of the moving object, the frequency shift signal is processed by the filtering amplifying unit 104 and the audio processing unit 105, and then the speaker 4 is driven by the audio filtering power amplifying unit 106 to play the frequency shift signal, which is an audio signal and can be normally heard by human ears. The movement of the fetal heart beat is detected in the actual detection, the movement generates corresponding beat frequency shift signals through the detection of ultrasonic Doppler, and the loudspeaker 4 plays the fetal heart sound generated by the fetal heart beat. When in use, a couplant is required to be smeared, so that the ultrasonic wave can be better coupled between the fetal heart instrument device and the belly of the pregnant woman, and the ultrasonic wave is not attenuated too much, so that the fetal heart can be better detected; when smearing the couplant, the fetal heart monitor device can detect the motion of couplant so that demodulation unit 103 can demodulate this doppler shift signal, through signal amplification drive speaker 4 phonation, the vibrations of the 4 casings of speaker drive host computer 1 of phonation, casing vibrations further drive the vibrations of couplant, and following a series of signal path will produce positive feedback and enlarge: slight vibration of the couplant, ultrasonic sensor pickup, frequency shift signal demodulation, loudspeaker amplification, shell vibration and further vibration of the couplant.

The utility model discloses in, there are three kinds of schemes to solve the self excitation squeal, have originally corresponding three kinds of embodiments, introduce respectively below.

Embodiment 1 to solve self-excited howling:

the ultrasonic sensor probe 2 adopts time division multiplexing to cut off the self-excited howling source for transmitting and receiving, and the specific description is as follows: as shown in fig. 5, the TX GATE is a timing at which a waveform is generated, the ultrasonic sensor probe 2 transmits an ultrasonic wave when the TX GATE is at a high level, and the ultrasonic sensor probe 2 does not transmit an ultrasonic wave when the TX GATE is at a low level; receiving no ultrasonic wave when RX GATE is at a low level and receiving an ultrasonic wave when RX GATE is at a high level; the time division multiplexed ultrasound wafer is transmitted and received at this time.

The ultrasonic wave is a part of sound wave, is sound wave with frequency higher than 20kHZ, has the same thing with the sound wave, is generated by the vibration of the material, and can only propagate in the medium, and the speed C in the human soft tissue (average value) is equal to 1540 m/s; according to the pulse sequence shown in fig. 5, theoretical analysis can detect the minimum distance and the maximum distance as:

Dmin＝C*T1/2

Dmax＝C*(T0+T1+T2)/2

here, we can set a value of T1 greater than 0, and pick up signals only when a moving object is at a distance from the ultrasonic transducer, for example, we can set T1 equal to 20us, and substitute the formula Dmin ═ C ═ T1/2 ═ 1540m/s ×. 20us/2 ═ 15.4mm, that is, the detection depth of the fetal heart monitor device is greater than 15.4mm, that is, signals with a depth distance less than 15.4mm are not detected, and the ultrasonic sensor probe 2 indicates that the range of smearing the couplant can just fall within this depth range, so that the problem of self-excited howling of the fetal heart monitor device caused by smearing the couplant can be effectively avoided, and the signals at the superficial distance of the ultrasonic transducer are not picked up due to timing gating; the actual clinical fetal heart depth is within a certain depth range, the self-excited howling problem can be effectively avoided by reasonably setting the T1 parameter, and the fetal heart can be effectively detected; in fig. 5, T3 may be a value equal to or greater than 0.

Embodiment 2 to solve self-excited howling: the demodulation of doppler frequency shift is performed by using a carrier signal with frequency offset, which is specifically described as follows:

the Doppler received signal condition is analyzed, fetal heart Doppler generally can use a continuous wave or pulse wave mode, signals received by an ultrasonic transducer include reflection and scattering signals of a moving body (such as a fetal heart), and the signals can be simplified into two signals: signal S1 with no doppler shift and signal S2 with doppler shift;

the total received signal can be expressed in digital terms as follows:

S＝S1+S2＝A cosαt+B cos(α+λ)t

lambda is Doppler frequency shift, and alpha is ultrasonic emission frequency angular frequency; as can be seen from the above equation, the amplitude and phase of the received signal S are both subjected to nonlinear modulation by the doppler shift component, and the process of extracting the frequency shift information from the received signal S is called a demodulation process.

The conventional practice of the present doppler fetal rhythm instrument is to demodulate the received ultrasonic doppler signal by using an intrinsic signal transmitted by ultrasound, for example, demodulating by using an analog multiplier or a switch demodulation mode, wherein the demodulated signal has a direct current component + a high frequency component + a low frequency component, and then filtering the high frequency component and the direct current component by using a band-pass filter to obtain a doppler frequency shift signal, i.e., a fetal heart sound signal; however, the conventional method cannot solve the self-excitation squeal problem of the integrated fetal heart monitor device; the method provided by the following steps can solve the self-excited squeal of the all-in-one machine;

assuming that the ultrasonic transmission eigensignal is S3 ═ C cos α t, and the demodulation carrier signal is subjected to a certain transformation, for example, α + δ, using the angular frequency of the ultrasonic transmission eigensignal, then the demodulation carrier signal may be represented as S4 ═ C cos (α + δ) t, at this time, demodulation is performed by using an analog multiplier, and the demodulation formula is expressed as follows:

[A cosαt+B cos(α+λ)t]*C cos(α+δ)t

＝A cosαt*C cos(α+δ)t+B cos(α+λ)t*C cos(α+δ)t

＝1/2AC cos(2αt+δt)+1/2cosδt+1/2cos(2αt+λt+δt)+1/2cos(λ-δ)t

the signal is obtained by filtering out high-frequency components 1/2AC cos (2 alpha t + delta t) and 1/2cos (2 alpha t + lambda t + delta t) through a low-pass filter

1/2cosδt+1/2cos(λ-δ)t

The overall flow is as follows, the actual signal is a signal superposition comparing multiple frequency components, and here, for simplification, only a single component signal formula is used for illustration, as shown in fig. 6, the low frequency component is filtered by a high-pass filter as above to obtain 1/2cos (λ - δ) t, so that the angular frequency of the output frequency shift signal is converted to a certain degree, and thus the path of the all-in-one machine self-howling signal positive feedback can be destroyed to solve the self-howling problem. The specific implementation mode is as follows: the howling elimination module comprises a multiplier and a band-pass filter, wherein an ultrasonic sensor inputs an ultrasonic Doppler echo signal into the multiplier, a digital circuit inputs a demodulation carrier signal into the multiplier, the multiplier is connected with the band-pass filter, the multiplier multiplies the ultrasonic Doppler echo signal with the demodulation carrier signal, the demodulation carrier signal is output to the band-pass filter, and the band-pass filter carries out filtering processing on the input signal so as to eliminate howling.

Embodiment 3 to solve self-excited howling: the self-excited squeal problem of the all-in-one machine is solved by using the technology of mixing the envelope of fetal heart audio and the set frequency, and the description is as follows: as shown in fig. 7, a doppler shift audio signal is demodulated by the demodulation unit 103, the doppler shift audio signal is rectified by the rectifier and low pass filter 201 to obtain an audio envelope signal, the waveform generator 202 can generate a waveform of any audio frequency, the waveform can be an audio signal with multiple frequency components, or an audio signal with a single frequency component, for example, the waveform generator 202 generates a waveform with multiple frequencies/single frequency components between 100 HZ and 800HZ, the waveform generated by the waveform generator 202 and the audio envelope signal are mixed by the mixer 203 to output a transformed audio waveform with a similar source audio envelope, the transformed audio waveform is unrelated to the frequency components of the doppler shift audio waveform, and is only related to the audio envelope; because the frequency of the converted audio waveform does not have any correlation with the frequency of the Doppler frequency shift audio waveform, the path of the self-excited howling signal positive feedback of the all-in-one machine can be damaged, and the problem of self-excited howling of the integrated fetal heart monitor can be well solved.

The specific implementation manner of the embodiment 3 is as follows: as shown in fig. 7, a howling elimination module is further disposed in the host 1, the howling elimination module includes a rectifying and low-pass filter 201, a waveform generator 202, and a mixer 203, an output end of the rectifying and low-pass filter 201 is connected to an input end of the mixer 203, the rectifying and low-pass filter 201 converts the doppler shift audio signal output by the demodulation unit 103 into an audio envelope signal, and the rectifying and low-pass filter 201 outputs the audio envelope signal to the mixer 203; the output end of the waveform generator 202 is connected to the input end of the mixer 203, the waveform generator 202 is configured to generate a waveform with any audio frequency, and the waveform generated by the waveform generator 202 and the audio envelope signal are mixed by the mixer 203 to generate a converted audio waveform; the howling cancellation module is connected between the demodulation unit 103 and the filtering and amplifying unit 104, or the howling cancellation module is integrated with the audio processing unit 105.

As another implementation of the utility model, the utility model discloses a fetal heart instrument device adopts components of a whole that can function independently design, as shown in fig. 8, mother's rhythm of the heart detection module is PPG sensor 5, and PPG sensor 5 installs on host computer 1, host computer 1 has speaker 4 and display screen 3, can accomodate on host computer 1 when ultrasonic sensor probe 2 does not use. The PPG sensor 5 can be placed on the host 1 or on the probe body 21, as shown in fig. 9. The scheme can carry a larger loudspeaker scheme, effectively improves the playing capability of low-frequency signals and is beneficial to improving the small-signal detection capability; meanwhile, the scheme is favorable for PPG detection, the left hand and the right hand are separated, one hand is used for PPG/SPO2 detection, the other hand grasps the ultrasonic sensor probe 2 to search fetal heart signals, in the process, the PPG/SPO2 detection is not disturbed due to the movement of the hand, and the mother heart rate can be detected more accurately.

The PPG sensor 5/SPO2 sensor may be replaced with an ECG sensor comprising an ECG master control module, and first and

second metal electrodes

6, 7 connected to the ECG master control module.

First arrangement of the first metal electrode 6 and the second metal electrode 7: as shown in fig. 10, the first metal electrode 6 is arranged at the periphery of the ultrasonic sensor head 22, and the second metal electrode 7 is mounted on the main body 1 at a hand-grippable position.

Second arrangement of the first metal electrode 6 and the second metal electrode 7: as shown in fig. 11, the first metal electrode 6 is arranged at the periphery of the ultrasonic sensor head 22, and the second metal electrode (7) is installed at the hand-held position of the probe body 21.

Third arrangement of the first metal electrode 6 and the second metal electrode 7: as shown in fig. 12, the first metal electrode 6 is mounted on the main body 1 and can be held by hand; the second metal electrode 7 is arranged at the hand-held position of the probe body 21.

On the basis of realizing the scheme, in order to improve the use value of the product, some additional functions are added, and the service life of the product after fetal delivery is prolonged, the specific examples are as follows: the function of the small night lamp is added, so that the user can use the baby at night conveniently to take care of the baby at birth.

The specific implementation scheme is as follows: the LED lamp 8 can be added on the host 1, the position of the LED lamp 8 can be at the top end and the middle section of the host 1, and the LED lamp is exemplified by an integrated scheme, for example, as shown in fig. 13 and 14, the lamp strip can be at the top end and the middle section of a product.

The LED lamp 8 can be designed by adopting a lamp strip, surrounds the machine body for one circle and can lightly illuminate the surrounding environment; the flashlight can be arranged in a matrix and placed at the top end of a product, so that a user can use the flashlight conveniently as a small flashlight.

The LED lamp 8 can be controlled by a switch and a volume key, and functions of switching light, adjusting brightness level and the like can be realized.

This child heart appearance device still includes the fan, and this child heart appearance device still has the precious function of charging.

The utility model discloses following beneficial effect has:

1. the utility model discloses with having carried on mother's rhythm of the heart detection device on the Doppler fetal rhythm instrument, helped solving the misdetection problem in the user's use, avoided the relevant clinical risk that the misdetection brought.

2. Blood oxygen detection technology is added, so that the oxygen content level of the blood of the mother and the fetus is monitored more deeply.

3. Adopt two kinds of realization forms, the demand that respectively has the dominant different application scenes of satisfying, the fetus-voice meter device of integrated design: the portability is better, and the product is compact, does not have the cable, is difficult to damage. The fetal heart monitor device of split design: the operation of both hands does benefit to mother's rhythm of the heart and detects, is difficult for receiving the manual interference of disturbing, is fit for the non professional use of family.

4. The integrally designed fetal heart monitor device adopts a special frequency shift scheme, solves the problem of self-excitation squeaking after the loudspeaker 4 and the ultrasonic sensor probe 2 are integrated, ensures that a product can be integrally molded and is convenient to carry.

5. Increase additional functions such as little night-light, fan and treasured that charges, convenience of customers takes care of the newborn baby night, brings tangible facility for the user, promotes product use value simultaneously, continues the life of product, realizes a tractor serves several purposes, environmental protection more.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a support maternal heart rate to detect fetal heart rate appearance device which characterized in that: including host computer (1), ultrasonic sensor probe (2), mother's rhythm of the heart detection module, host computer (1) respectively with ultrasonic sensor probe (2) with mother's rhythm of the heart detection module electric connection, ultrasonic sensor probe (2) are used for detecting the foetus rhythm of the heart, mother's rhythm of the heart detection module is used for detecting mother's rhythm of the heart, ultrasonic sensor probe (2) with the data transmission that mother's rhythm of the heart detection module will detect and obtain gives host computer (1).

2. The fetal heart rate monitor apparatus supporting maternal heart rate detection of claim 1, wherein: the fetal heart monitor device further comprises a display screen (3) and/or a loudspeaker (4), wherein the display screen (3) and/or the loudspeaker (4) are/is installed on the host (1), detection data are displayed through the display screen (3), and the detection data are broadcasted through the loudspeaker (4).

3. The fetal heart rate monitor apparatus supporting maternal heart rate detection of claim 2, wherein: the main machine (1) and the ultrasonic sensor probe (2) are installed together.

4. The fetal heart rate monitor apparatus of claim 3, wherein: the mother heart rate detection module is a PPG sensor (5), and the PPG sensor (5) is installed on the host (1).

5. The fetal heart rate monitor apparatus of claim 3, wherein: mother's heart rate detection module is the ECG sensor, the ECG sensor include ECG main control module and with first metal electrode (6) and second metal electrode (7) that ECG main control module links to each other, ECG main control module is located in host computer (1), host computer (1) is equipped with first metal electrode (6), ultrasonic sensor probe (2) periphery is equipped with second metal electrode (7).

6. Fetal heart rate monitor apparatus supporting maternal heart rate detection according to any one of claims 3 to 5, wherein: the host (1) further comprises an ultrasonic receiving frequency-selecting amplification unit (101), an ultrasonic frequency generation unit (102), a demodulation unit (103), a filtering amplification unit (104), an audio processing unit (105), an audio filtering power amplification unit (106) and an ultrasonic sensor driving unit (107), wherein the input end of the ultrasonic receiving frequency-selecting amplification unit (101) is connected with the ultrasonic sensor probe (2), the output end of the ultrasonic receiving frequency-selecting amplification unit (101) is connected with the demodulation unit (103), the output end of the ultrasonic frequency generation unit (102) is respectively connected with the demodulation unit (103) and the ultrasonic sensor driving unit (107), the output end of the ultrasonic sensor driving unit (107) is connected with the ultrasonic sensor probe (2), the demodulation unit (103), the filtering amplification unit (104), the audio processing unit (105), The audio filtering power amplification unit (106) and the loudspeaker (4) are connected in sequence.

7. The fetal heart rate monitor apparatus supporting maternal heart rate detection of claim 6, wherein: a howling elimination module is further arranged in the host (1), the howling elimination module comprises a rectifying and low-pass filter (201), a waveform generator (202) and a mixer (203), an output end of the rectifying and low-pass filter (201) is connected with an input end of the mixer (203), the rectifying and low-pass filter (201) converts the Doppler frequency shift audio signal output by the demodulation unit (103) into an audio envelope signal, and the rectifying and low-pass filter (201) outputs the audio envelope signal to the mixer (203); the output end of the waveform generator (202) is connected with the input end of the mixer (203), the waveform generator (202) is used for generating a waveform with any audio frequency, and the waveform generated by the waveform generator (202) and an audio envelope signal are mixed by the mixer (203) to generate a converted audio waveform; the howling elimination module is connected between the demodulation unit (103) and the filtering amplification unit (104), or the howling elimination module is integrated with the audio processing unit (105).

8. The fetal heart rate monitor apparatus supporting maternal heart rate detection of claim 1, wherein: the ultrasonic sensor probe is characterized in that the host (1) and the ultrasonic sensor probe (2) are separated, the host (1) and the ultrasonic sensor probe (2) are connected through a cable, and the ultrasonic sensor probe (2) comprises a probe body (21) and an ultrasonic sensor sound head (22) arranged at the end part of the probe body (21).

9. The fetal heart rate monitor apparatus supporting maternal heart rate detection of claim 8, wherein: the mother heart rate detection module is a PPG sensor (5), and the PPG sensor (5) is installed on the host (1) or the probe body (21).

10. The fetal heart rate monitor apparatus supporting maternal heart rate detection of claim 8, wherein: the mother heart rate detection module is an ECG sensor, and the ECG sensor comprises an ECG main control module, and a first metal electrode (6) and a second metal electrode (7) which are connected with the ECG main control module; the first metal electrode (6) is arranged at the periphery of the ultrasonic sensor sound head (22), and the second metal electrode (7) is installed on the host (1); or the first metal electrode (6) is arranged at the periphery of the ultrasonic sensor sound head (22), and the second metal electrode (7) is installed on the probe body (21); or the first metal electrode (6) is arranged on the host (1), and the second metal electrode (7) is arranged on the probe body (21).

11. The fetal heart rate monitor apparatus supporting maternal heart rate detection of claim 1, wherein: the fetal heart rate instrument device further comprises an LED lamp (8) and a fan, and the fetal heart rate instrument device further has the function of a charger.

12. The fetal heart rate monitor apparatus supporting maternal heart rate detection of claim 6, wherein: a howling elimination module is further arranged in the host (1), the howling elimination module comprises a multiplier and a band-pass filter, an ultrasonic sensor inputs an ultrasonic Doppler echo signal into the multiplier, a digital circuit inputs a demodulation carrier signal into the multiplier, the multiplier is connected with the band-pass filter, the multiplier multiplies the ultrasonic Doppler echo signal with the demodulation carrier signal and demodulates and outputs the ultrasonic Doppler echo signal to the band-pass filter, and the band-pass filter carries out filtering processing on the input signal so as to eliminate howling; the howling elimination module is connected between the demodulation unit (103) and the filtering amplification unit (104), or the howling elimination module is integrated with the audio processing unit (105).