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WO2018187915A1 - 多普勒胎心仪 - Google Patents

多普勒胎心仪 Download PDF

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Publication number
WO2018187915A1
WO2018187915A1 PCT/CN2017/079972 CN2017079972W WO2018187915A1 WO 2018187915 A1 WO2018187915 A1 WO 2018187915A1 CN 2017079972 W CN2017079972 W CN 2017079972W WO 2018187915 A1 WO2018187915 A1 WO 2018187915A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
fetal heart
heart rate
main board
speaker
Prior art date
Application number
PCT/CN2017/079972
Other languages
English (en)
French (fr)
Inventor
黄东
陈德伟
吴勇
Original Assignee
深圳市理邦精密仪器股份有限公司
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 深圳市理邦精密仪器股份有限公司 filed Critical 深圳市理邦精密仪器股份有限公司
Priority to PCT/CN2017/079972 priority Critical patent/WO2018187915A1/zh
Priority to CN201780000996.8A priority patent/CN107635475B/zh
Priority to CN202010663021.7A priority patent/CN111920449A/zh
Priority to US15/573,329 priority patent/US10939893B2/en
Priority to EP17790935.5A priority patent/EP3415095B1/en
Publication of WO2018187915A1 publication Critical patent/WO2018187915A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/02—Measuring pulse or heart rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/08—Clinical applications
    • A61B8/0866—Clinical applications involving foetal diagnosis; pre-natal or peri-natal diagnosis of the baby
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
    • A61B8/4444—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device related to the probe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
    • A61B8/4444—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device related to the probe
    • A61B8/4472—Wireless probes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/46—Ultrasonic, sonic or infrasonic diagnostic devices with special arrangements for interfacing with the operator or the patient
    • A61B8/461—Displaying means of special interest
    • A61B8/462—Displaying means of special interest characterised by constructional features of the display
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/48—Diagnostic techniques
    • A61B8/488—Diagnostic techniques involving Doppler signals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/52—Devices using data or image processing specially adapted for diagnosis using ultrasonic, sonic or infrasonic waves
    • H05K5/0008—
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/0017—Casings, cabinets or drawers for electric apparatus with operator interface units
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/0086—Casings, cabinets or drawers for electric apparatus portable, e.g. battery operated apparatus
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2503/00—Evaluating a particular growth phase or type of persons or animals
    • A61B2503/02—Foetus
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
    • A61B8/4427—Device being portable or laptop-like

Definitions

  • the present disclosure relates to the field of medical device technology, and in particular, to a Doppler fetal heart rate meter.
  • Doppler fetal heart rate is widely used in medical institutions such as hospitals or community health service centers, and has gradually penetrated into home applications, and has evolved toward the trend of miniaturization and integrated probes.
  • the basic function of Doppler fetal heart rate is to listen to fetal heart sounds and display fetal heart rate.
  • the time of fetal heart rate is about 1-10 minutes.
  • the detection of the gestational age range generally needs to cover the entire range of pregnancy from the small gestational age to the large gestational age. Therefore, the sensitivity of the fetal heart rate detection is higher than that of the general fetal monitoring machine, especially in the detection ability of the small gestational age.
  • the integrated Doppler fetal heart rate requires internal power supply, generally in the form of battery power, requires the built-in speaker to emit the fetal heart sound, and needs to bring its own display to display the fetal heart rate. In order to facilitate the user to read the fetal heart rate value. Due to the miniaturization of the size of the all-in-one, and the relatively large size of the modules such as speakers, display screens, and batteries, it is impossible to design a fetal heart Doppler integrated machine that satisfies the clinical use. Problem: 1. The size of the all-in-one machine cannot be miniaturized, and at the same time it is cumbersome and the user's hand is inconvenient. 2. The Doppler fetal heart rate has the problem of self-excited howling, which affects the clinical use effect.
  • the present disclosure aims to solve at least one of the technical problems in the related art to some extent. To this end, the present disclosure proposes a Doppler fetal heart rate meter that is compact and small in size.
  • a Doppler fetal heart rate includes: a housing, a main board, a speaker, and an ultrasonic transducer; the speaker and the ultrasonic transducer are mounted in the housing; the ultrasonic transducer includes at least One Transducing wafers for generating pulse waves; the speaker and the ultrasonic transducer are both electrically connected to a main board, the head end of the housing is provided with the ultrasonic transducer, and the tail end of the housing is disposed The speaker and the motherboard.
  • the Doppler fetal heart rate meter of the embodiment of the present disclosure by arranging the speaker, the main board and the ultrasonic transducer in the housing, the space utilization rate inside the housing can be effectively improved, and the Doppler fetal heart rate meter can be compact and compact. small.
  • the ultrasonic transducer and the speaker are mounted in the same installation space of the housing, and the ultrasonic transducer is operated in the pulse wave mode, and the probability of self-excited howling can be reduced.
  • the housing includes spaced apart first and second chambers; the main board and the speaker are located within the first chamber, and the speaker is in the first chamber
  • the chamber is located on a first side of the main board; the ultrasonic transducer is located in the second chamber.
  • the housing includes an upper housing and a lower housing, and the upper housing and the lower housing are respectively provided with a partition, the upper housing and the lower housing The upper baffles are disposed opposite to define the first chamber.
  • the housing further includes: a head housing; the partition on the upper and lower housings and the head housing defining the second chamber room.
  • the lower case includes: a recessed battery compartment formed in the first chamber; the ultrasonic transducer and the speaker are respectively located in the housing of the battery compartment The sides of the length direction.
  • the Doppler fetal heart rate instrument further includes a display screen electrically connected to the main board and located in the first chamber with the first side of the main board The opposite second side.
  • the main board and the ultrasonic transducer are connected by a wire harness, At least one of the upper casing and the partition on the lower casing is provided with a wire hole.
  • the method further includes: a fixing sleeve disposed on the speaker and fixed on the lower casing, wherein the lower casing is provided with an sound corresponding to the speaker hole.
  • the lower case includes: a lower case body and a battery compartment cover, the battery compartment cover being detachably mounted on the lower case body and the lower case The body defines the battery compartment.
  • touch sensors are respectively disposed on inner surfaces of the upper case and the lower case, and the touch sensors are electrically connected to the main board.
  • a touch sensor is disposed on the head housing, and the touch sensor is electrically connected to the main board.
  • a battery spring is disposed in the battery compartment, and the battery compartment is further provided with a battery spring hole, a part of the battery spring extends out of the battery spring hole and is fixed to the motherboard .
  • a display stand is disposed on the main board, and the display screen is fixed on the display stand.
  • the main board is provided with a headphone jack
  • the housing is provided with an earphone hole corresponding to the earphone jack.
  • the display screen corresponds to a display window formed on the upper housing.
  • the retaining sleeve is a soft silicone rubber boot and is bonded to the lower housing.
  • Figure 1 is a diagram showing the state of use of a Doppler fetal heart rate by a user
  • FIG. 2 is a schematic structural view of a Doppler fetal heart rate meter according to an embodiment of the present disclosure
  • FIG. 3 is a schematic structural view of a Doppler fetal heart rate meter according to another embodiment of the present disclosure.
  • FIG. 4 is an exploded view of a Doppler fetal heart rate meter in accordance with an embodiment of the present disclosure
  • Figure 5 is a schematic view of the main board, the speaker and the lower case
  • Figure 6 is a schematic structural view of the upper casing
  • FIG. 7 and 8 are schematic views of two different ultrasonic transducers and a head housing, respectively;
  • Figure 9 is a schematic view of a battery compartment cover and a sponge pad
  • Figure 10 is a schematic view of a fixing sleeve and a speaker
  • Figure 11 is a cross-sectional view taken along line A-A of Figure 10;
  • FIG. 12 is a schematic illustration of a Doppler fetal heart rate meter in accordance with yet another embodiment of the present disclosure.
  • Lower case 120 battery compartment 121; sound hole 122; battery spring 123; battery spring hole 124; lower case body 125; battery compartment cover 126;
  • Main board 200 button 210; headphone jack 220;
  • Display screen 300 flexible circuit board 310; display stand 320; dust stop 330; display panel 340;
  • a speaker 400 an ultrasonic transducer 500; an ultrasonic emission wafer 510; an ultrasonic receiving wafer 520;
  • a Doppler fetal heart rate 1000 in accordance with an embodiment of the present disclosure is described in detail below with reference to FIGS. It should be noted that the Doppler fetal heart rate 1000 of the present disclosure is a monolithic structure, rather than a conventional split structure.
  • the Doppler fetal heart rate 1000 includes a housing 100, a main board 200, a speaker 400, and an ultrasonic transducer 500.
  • the speaker 400 and the ultrasonic transducer 500 are mounted in the housing 100; the ultrasonic transducer 500 includes at least one transducing wafer for generating a pulse wave; and the speaker 400 and the ultrasonic transducer 500 are electrically connected to the main board 200, the housing
  • the ultrasonic transducer 500 is disposed at the head end of the 100, and the speaker 400 and the main board 200 are disposed at the tail end of the housing 100.
  • the Doppler fetal heart rate 1000 direction position of the embodiment of the present disclosure is based on the operation position shown in FIG. 1 .
  • the direction toward the user's head is upward
  • the direction toward the user's foot is downward
  • the direction toward the user's abdomen is the head
  • the direction away from the user's abdomen is the tail.
  • the housing 100 includes a first chamber 170 and a second chamber 180 that are spaced apart.
  • the main board 200 is disposed in the first chamber of the housing 100, wherein the extending direction of the main board 200 is substantially the same as the extending direction of the housing 100, that is, the extending direction between the head and the tail.
  • the speaker 400 is electrically connected to the main board 200, and the speaker 400 is located in the first chamber on the first side of the main board 200, such as the lower side. Wherein, under the driving of the main board 200, the speaker 400 can emit a fetal heart sound to enhance the user's feeling of use. In addition, since the speaker 400 is located on the lower side of the main board 200, In this way, the space between the main board 200 and the lower inner surface of the housing 100 can be reasonably utilized, and the display screen 300 and the speaker 400 can be prevented from colliding with each other, so that the speaker 400 can be arranged in the housing 100 reasonably, compared with the prior art.
  • the speaker is connected to the host through a cable, works independently, and plays fetal heart audio.
  • the speaker, ultrasonic transducer and main board of the present disclosure are all disposed in the housing, realizing a truly integrated portable fetal heart Doppler instrument, and more suitable for household use.
  • the demand can be beneficial to achieve the miniaturization goal of the Doppler fetal heart rate 1000.
  • the ultrasonic transducer 500 is electrically connected to the main board 200, and the ultrasonic transducer 500 is located in the second chamber of the housing 100.
  • the main board 200 can be used to drive the ultrasonic transducer 500 to emit ultrasonic waves, and simultaneously amplify, demodulate, filter, etc. the ultrasonic Doppler signals picked up by the ultrasonic transducer 500, and perform fetal heart rate data on the collected fetal heart rate data.
  • the calculation process and drive speaker 400 emits fetal heart sounds.
  • the main board 200 can be provided with an ultrasonic module, a filter amplifying module, a power module, an audio power amplifier module, etc., the ultrasonic module is disposed at a position of the main board 200 near the ultrasonic transducer 500, and the audio power amplifier module is placed near the speaker 400, and the filtering module It is placed between the ultrasound module and the audio power amplifier module, and the power module is placed close to the battery compartment 121.
  • the above module layout is beneficial to the overall layout of the motherboard 200, and can further enhance the internal space and product performance of the Doppler fetal heart rate 1000.
  • the ultrasonic transducer 500 is located at the head end of the housing 100 facing the human body.
  • the ultrasonic transducer 500 can make reasonable use of the head end space within the housing 100, and can facilitate its transmission of ultrasonic waves and reception of ultrasonic Doppler signals.
  • this can increase the distance between the speaker 400 and the ultrasonic transducer 500 at least to some extent, can reduce the positive feedback of the sound system, and can reduce the probability of self-excited howling.
  • the Doppler fetal heart rate 1000 of the embodiment of the present disclosure by arranging the display screen 300, the speaker 400, the main board 200, and the ultrasonic transducer 500 in the casing 100, the space use inside the casing 100 can be effectively improved.
  • the rate can make the Doppler fetal heart rate 1000 compact and small in size.
  • the battery compartment 121 is formed on the housing 100.
  • the housing 100 may be formed with other components, such as a grip portion 140.
  • the grip portion 140 can be held by the user's hand, which can be facilitated.
  • the user grasps and manipulates the Doppler fetal heart rate 1000.
  • the battery compartment 121 can be used to house a battery 600 that can serve as a source of electrical energy for the Doppler fetal heart rate 1000.
  • the ultrasonic transducer and the speaker are located on both sides of the housing of the battery compartment in the length direction.
  • the Doppler fetal heart rate meter further includes a display screen 300 that is electrically coupled to the main board 200, and the display screen 300 is located in the first chamber on a second side of the main board 200 opposite the first side,
  • the upper side specifically the upper surface
  • the display screen 300 corresponds to the display window 111.
  • Display information within display screen 300 can be presented to the user via display window 111.
  • the display screen 300 thus disposed can reasonably utilize the space between the main board 200 and the upper inner surface of the housing 100, so that the display screen 300 can be arranged reasonably, and the space utilization ratio in the housing 100 can be improved, which is beneficial to the realization of Doppler.
  • the goal of miniaturization of the fetal heart rate 1000 is electrically coupled to the main board 200, and the display screen 300 is located in the first chamber on a second side of the main board 200 opposite the first side,
  • the upper side specifically the upper surface
  • the display screen 300 corresponds to the display window 111.
  • Display information within display screen 300 can be presented to the user
  • a display window 111 is formed on the housing 100, and the display window 111 can be used to display corresponding data, such as fetal heart rate, fetal movement number, and the like.
  • the display window 111 is located on the upper surface of the housing 100.
  • the housing may not have a display screen and a display window, as shown in FIG.
  • the display window 111 may be disposed away from the head end of the housing 100.
  • the display window 111 can be disposed adjacent to the tail end of the housing 100 with respect to the grip portion 140, wherein the grip portion 140 on the housing 100 can be disposed near the head end of the housing 100, which can facilitate the user to hold the Doppler.
  • the fetal heart rate monitor 1000 the fetal heart rate at the display window 111 is observed, that is, the use state shown in FIG. 1, which can greatly facilitate the user and improve the user experience.
  • the battery compartment 121 and the speaker 400 are spaced apart in the longitudinal direction of the casing 100.
  • the longitudinal direction of the casing 100 is the extending direction between the head end and the tail end shown in FIG.
  • the battery compartment 121 can be disposed on the lower inner surface of the casing 100, so that the position of the battery compartment 121 can be reasonably arranged, and the space below the main board 200 can be reasonably utilized, which can facilitate the miniaturization of the Doppler fetal heart rate 1000. .
  • the speaker 400 may be disposed away from the head end of the housing 100.
  • the speaker 400 can be placed away from the ultrasonic transducer 500, which can reduce the positive feedback of the sound system, thereby reducing the probability of self-excited howling of the Doppler fetal heart rate 1000.
  • the position of the speaker and battery compartment can also be exchanged.
  • the housing 100 may have a straight cylindrical shape.
  • the straight cylindrical housing 100 can be easily grasped by the user on the one hand, and facilitates the arrangement of the main board 200 on the other hand, and can facilitate the miniaturization design goal of the Doppler fetal heart rate 1000.
  • the upper surface of the housing 100 may be in the shape of a dome.
  • the surface of the housing 100 facing the user's head is braided, which can be easily observed by the user, and can be easily grasped by the user, and can be more consistent with the user's use characteristics, and can enhance the user's use experience.
  • the head end is not limited to the bottom end position of the fetal heart rate meter, but may be at other positions of the fetal heart rate meter as long as the end for measurement belongs to the head end.
  • the housing 100 may include an upper housing 110, a lower housing 120, and a head housing 130.
  • the display window 111 is formed on the upper casing 110, and the upper casing 110 may constitute an upper surface of the casing 100.
  • the lower casing 120 and the upper casing 110 may be oppositely mounted.
  • the manner in which the upper casing 110 and the lower casing 120 are installed is not limited. For example, the inner edges of the upper casing 110 and the lower casing 120 may be disposed.
  • the upper housing 110 and the lower housing 120 are snap-fastened; for example, the upper housing 110 and the lower housing 120 may be internally Screw posts are provided, and the screws pass through the corresponding screw posts to fix the two to each other; for example, the upper casing 110 and the lower casing 120 can be fixed by a combination of the above two fixing methods.
  • the upper housing 110 and the lower housing 120 define a first chamber 170 that includes a recessed battery compartment 121 formed within the first chamber 170 of the rear housing 120.
  • the head case 130 is mounted at the head ends of the upper case 110 and the lower case 120, and surrounds the head ends of the upper case 110 and the lower case 120, and the head case 130 and the upper case 110 and the lower case 120 are defined
  • the second chamber 180 is exited. This makes the housing 100 compact and better accommodates the various internal components.
  • the head ends of the upper casing 110 and the lower casing 120 may be respectively provided with external threads, and the inner peripheral wall of the head casing 130 may be provided with internal threads, and the head casing 130 may be screwed with the upper casing 110 and the lower casing 120.
  • the threaded upper housing 110, the lower housing 120 and the head housing 130 are highly efficient to install and are easy to disassemble.
  • the upper casing 110 and the lower casing 120 are respectively provided with partition plates 112.
  • the partition plates 112 are respectively disposed on the inner surfaces of the upper casing 110 and the lower casing 120.
  • the upper case 110 and the partition 112 on the lower case 120 are oppositely disposed to define a first chamber 170 between the upper case 110 and the lower case 120, and a head case
  • the second chamber 180 is defined, the main board 200, the display screen 300, and the speaker 400 are housed in the first chamber 170, and the ultrasonic transducer 500 is housed in the second chamber 180.
  • the main board 200 and the ultrasonic transducer 500 are connected by a wire harness 190, and at least one of the upper case 110 and the partition plate 112 on the lower case 120 is provided with a wire hole.
  • the wire hole 113 is disposed in the partition 112 of the upper casing 110, specifically in the middle of the partition, and the wire hole 113 can facilitate the passage of the wire harness, and The smaller length of the harness between the main board 200 and the ultrasonic transducer 500 can facilitate the miniaturization of the Doppler fetal heart rate 1000.
  • the partition plate 112 on the upper casing 110 is provided with a wire hole 113, and the partition plate 112 on the lower casing 120 is not provided with the wire hole 113, so that the reliability of the wire harness in the wire hole 113 can be ensured.
  • the main board 200 and the ultrasonic transducer 500 by connecting the main board 200 and the ultrasonic transducer 500 by the wire harness, stable and reliable transmission of the ultrasonic signal can be facilitated, and the fetal heart sound can be prevented from introducing noise due to the sway of the ultrasonic transducer 500, which can further improve the Doppler fetal heart rate.
  • Product performance of the instrument 1000 is provided with a wire hole 113, and the partition plate 112 on the lower casing 120 is not provided with the wire hole 113, so that the reliability of the wire harness in the wire hole 113 can be ensured.
  • the ultrasonic transducer 500 is arranged in a variety of forms, which are described in detail below in conjunction with FIGS. 7 and 8.
  • the working modes of the prior art ultrasonic transducers all adopt the continuous wave mode of operation, that is, the ultrasonic mode is used to transmit ultrasonic waves, and the ultrasonic receiving transducer receives the Doppler echo signal.
  • the continuous wave mode of operation produces a self-excited howling problem.
  • the operating mode of the ultrasonic transducer preferably adopts a pulse wave working mode, that is, the ultrasonic transducer can adopt the form of ultrasonic emission and ultrasonic receiving time-sharing operation, when the head casing 130 and the pregnant woman's belly are in contact with each other.
  • the ultrasonic transducer 500 can be implemented in the form of a single flat wafer, or can be implemented in a spherical wafer.
  • the spherical wafer is advantageous for further expanding the detection range of the fetal heart. It is also possible to use a multi-wafer parallel array.
  • the ultrasonic transducer 500 includes two semicircular wafers, one of which is an ultrasonic emission wafer 510 and the other of which is an ultrasonic receiving wafer 520.
  • the effective area of the ultrasonic inspection is the intersection of two wafer ultrasonic beams.
  • the head housing 130 may be provided with support protrusions for supporting the two semicircular wafers.
  • the use of pulse wave can effectively improve the detection range of the fetal heart rate, and can effectively avoid the problem of self-excited howling.
  • Corresponding adjustment of the timing between transmission and reception can effectively control the depth of fetal heart detection, and can effectively filter shallow
  • the noise is not in the depth range of the fetal heart rate, thus avoiding the superficial noise signal causing self-excited howling.
  • the Doppler fetal heart rate device 1000 may further include: a fixing sleeve 150, the fixing sleeve 150 is sleeved on the speaker 400.
  • the speaker 400 has a lower edge, and the fixing sleeve 150 may be provided with an annular groove.
  • the lower edge of the speaker 400 can extend integrally into the annular groove, whereby the annular groove can function to mount and secure the lower edge of the speaker 400.
  • the fixing sleeve 150 is fixed on the lower casing 120, and the lower casing 120 is provided with an acoustic hole 122 corresponding to the speaker 400.
  • the speaker 400 can be fixed on the lower casing 120 through the fixing sleeve 150, so that the mounting reliability of the speaker 400 in the casing 100 can be ensured, and the speaker 400 and the display screen 300 can be disposed correspondingly on the upper and lower sides of the main board 200,
  • the sound hole 122 can facilitate the speaker 400 to output audio to the outside, which can facilitate the user to listen to the fetal heart sound.
  • the fixing sleeve 150 may be a soft silicone sleeve. Thereby, the fixing sleeve 150 can achieve an effective vibration damping effect, so that the vibration of the housing 100 caused by the sound vibration of the speaker 400 can be reduced, thereby effectively reducing the probability of self-excited howling of the Doppler fetal heart rate meter 1000.
  • the lower housing 120 can be provided with a screw hole.
  • the screw is inserted into the screw hole of the lower housing 120 after passing through the soft silicone sleeve, so that the soft silicone sleeve can be effectively fixed on the lower housing 120, and the speaker 400 can be ensured.
  • Fixed reliability within the housing 100 the number of screws is not limited, for example, as shown in Figure 5, the screw can be two, of course, the screw can also be three, four, or even more, multiple screws can be evenly distributed in the soft silicone sleeve Weekly.
  • the fastening of the two screws allows the internal space of the Doppler fetal heart rate 1000 to be miniaturized while ensuring the fastening effect.
  • the soft silicone sleeve can also effectively isolate the front and rear sound chambers of the speaker 400, thereby avoiding the sound short circuit of the front and rear sound chambers, improving the electro-acoustic conversion efficiency, and optimizing the fetal heart sound quality, which can be beneficial to The sound of the fetal heart sounds.
  • the soft silicone sleeve is also designed to improve the waterproof rating, so that liquid water can only enter To the front cavity of the speaker 400, the water can no longer enter the Doppler fetal heart rate 1000 through the soft silicone, thereby further improving the waterproof performance of the Doppler fetal heart rate 1000.
  • the fixing sleeve 150 is a soft silicone rubber sleeve
  • it can be bonded to the lower casing 120.
  • the direct bonding of the soft silicone rubber sleeve can be fixed to the lower casing 120 without screws, so that the internal space of the Doppler fetal heart rate 1000 can be further miniaturized.
  • the speaker 400 can be directly fixed to the lower casing 120 by a fixing manner such as a screw or a sticker.
  • the battery compartment 121 is formed at a position of the lower casing 120 near the head end of the casing 100.
  • the battery compartment 121 can effectively separate the speaker 400 from the ultrasonic transducer 500, which can further reduce the probability of self-excited howling of the Doppler fetal heart rate meter 1000, and thus can reasonably utilize the space at the lower casing 120.
  • the Doppler fetal heart rate 1000 is compact and small in size.
  • a battery spring 123 may be disposed in the battery compartment 121.
  • the battery compartment 121 may further be provided with a battery spring hole 124.
  • a part of the battery spring 123 protrudes from the battery spring hole 124, and the battery spring 123 A part is soldered and fixed to the main board 200.
  • the main board 200 may be provided with a pad hole, and a part of the battery spring 123 is soldered and fixed to the pad hole. It should be noted that a part of the battery spring 123 protrudes from the outer side of the lower casing 120 into the interior of the casing 100, and then is soldered and fixed to the pad hole on the main board 200, so that the lower casing can be fixed at least to some extent.
  • the function of the 120 and the main board 200 can improve the mounting reliability of the main board 200 in the casing 100.
  • the connection line can be omitted, and the internal connection line of the Doppler fetal heart rate meter 1000 can be avoided, and the internal space of the Doppler fetal heart rate meter 1000 can be further reduced, and the reliability of the connection can be ensured.
  • the positive and negative poles of the battery 600 can be fastened and fixed directly to the lower casing 120 through the card position.
  • the lower casing 120 and the main plate 200 can also be locked and fixed, and the lower casing 120 and the main plate 200 can also be fixed by screws.
  • the structure of the lower casing 120 also needs to be adjusted according to the selection of the battery 600.
  • the battery 600 is a non-rechargeable battery, it is necessary to provide a battery compartment cover 126 that facilitates the installation and removal of the battery 600.
  • the lower casing 120 may include a lower casing body 125 and A battery compartment cover 126, the battery compartment cover 126 is detachably mounted on the lower housing body 125, and the battery compartment cover 126 and the lower housing body 125 define a battery compartment 121.
  • the battery compartment cover 126 may also be provided with a sponge pad 127, which can effectively protect the battery 600 and the battery compartment cover 126.
  • the rechargeable battery is built in the Doppler fetal heart rate 1000 without the need to provide a battery compartment cover 126, thereby facilitating the overall design of the Doppler fetal heart rate 1000. Damaged, it can also reduce the waterproof level of the Doppler fetal heart rate 1000 while reducing the internal space of the Doppler fetal heart rate 1000.
  • the control form of the Doppler fetal heart rate meter 1000 will be described in detail below with reference to FIG.
  • touch sensors 160 are respectively disposed on inner surfaces of the upper casing 110 and the lower casing 120, and the touch sensors 160 are electrically connected to the main board 200.
  • the touch sensor 160 can be substantially oblong.
  • the touch sensor 160 can generate a sensing signal, which triggers the device to switch on and off, thereby enabling the device to be turned on when the user touches the device, and when the device is removed from the body part,
  • the automatic shutdown of the device can greatly simplify the operation of the Doppler fetal heart rate 1000, which can make the Doppler fetal heart rate 1000 intelligent, and can effectively save battery 600 power and extend battery life of battery 600. .
  • the Doppler fetal heart rate 1000 thus arranged can be overall beautiful and durable, and the cost is low.
  • the body can be made without any mechanical button, the overall integrity of the structure is not damaged, and an effective waterproof design can be realized.
  • the vibration of the fetal heart signal is not affected or the loss due to the vibration of the device. Reliability.
  • the plurality of touch sensors 160 may be connected in parallel, that is, electrically connected, and the plurality of touch sensors 160 may be respectively disposed at different positions of the front, the rear, the left, and the right of the housing 100, thereby ensuring the user's grip.
  • the touch sensor 160 can be attached to the inner surface of the housing 100, and the touch sensor 160 can realize its sensing function by means of a copper foil, a conductive sponge, a touch spring or the like.
  • the head housing 130 may be provided with a touch sensor 160, and the touch sensor 160 is electrically connected to the main board 200, and FIG. 3 and FIG. 2 are the same. It can be understood that the touch sensor 160 located at the head housing 130 can be used to identify whether the head housing 130 is in contact with the user's belly, and whether the head housing 130 is in contact with the user's belly or not will cause the touch sensor 160 to generate a corresponding touch.
  • the touch signal can control whether the ultrasonic module of the main board 200 works; when the Doppler fetal heart rate 1000 contacts the pregnant woman's belly, the ultrasonic module of the main board 200 is controlled to work, and when the Doppler fetal heart rate meter 1000 is not in contact with the pregnant woman's belly, the signal is controlled.
  • the main board 200 stops working, which can effectively improve the service life of the ultrasonic transducer 500, can reduce the ultrasonic radiation, and can further enhance the product endurance of the Doppler fetal heart rate meter 1000.
  • the display screen 300 can be attached to the main board 200 via a conductive rubber connector.
  • the conductive rubber connector can make the electrical connection between the display screen 300 and the main board 200 reliable, and can make the display 300 display data stable.
  • the display screen 300 may be connected to the main board 200 through the flexible circuit board 310.
  • the flexible circuit board 310 can be directly soldered to the main board 200, so that Further reducing the internal space of the Doppler fetal heart rate 1000 can further improve the reliability and stability of the electrical connection between the display screen 300 and the main board 200, thereby facilitating efficient and stable transmission of the display signal.
  • the main board 200 may be provided with a display bracket 320, and the display screen 300 is fixed on the display bracket 320.
  • a portion of the conductive rubber connector or flexible circuit board 310 can be housed in the lower space of the display stand 320, which can better reduce the space occupied by the display 300.
  • the display bracket 320 can function to fix the display screen 300 on the main board 200, thereby effectively improving the reliability and stability of the electrical connection between the main board 200 and the display screen 300, thereby facilitating display of signals. Effective and stable transmission.
  • the conductive rubber connector is used in combination with the display bracket 320, the internal space of the Doppler fetal heart rate 1000 can be effectively reduced, which can facilitate the miniaturization of the Doppler fetal heart rate 1000.
  • a dust stop 330 extending circumferentially along the display screen 300 is provided.
  • the dust stop 330 can be attached to the circumferential direction of the display screen 300, and the dust stop 330 can effectively prevent dust from entering the display screen 300, thereby improving the display effect of the display screen 300.
  • the dust stop 330 can be a display sponge ring.
  • a display panel 340 may be disposed at the display window 111, and a transparent display area is disposed on the display panel 340, and information displayed on the display screen 300 may be effectively displayed through the display window 111 and the display panel 340. Come out, so that the user can effectively read the display 300 information.
  • the main board 200 may be provided with a plurality of buttons 210.
  • the inner surface of the housing 100 is provided with a plurality of button areas 114, and the plurality of buttons 210 correspond to the plurality of button areas 114.
  • Settings For example, the button 210 may be three, the button area 114 may be three, and the three buttons 210 and the three button areas 114 are arranged one by one.
  • the plurality of buttons 210 may have a switch machine and a tire respectively Heart volume adjustment function.
  • the button 210 can be implemented by using a touch button. Therefore, the button 210 can be implemented by using a touch spring or a conductive sponge.
  • the touch panel can be disposed in the motherboard 200 to effectively implement the function of the touch button.
  • the button 210 adopts the implementation of the touch button, so that the structural integrity of the Doppler fetal heart rate 1000 can be maintained without destroying the structural shape, thereby simultaneously improving the waterproof performance of the Doppler fetal heart rate 1000;
  • vibration does not occur when the mechanical button is operated, thereby effectively avoiding the deviation of the fetal heart position caused by the operation vibration of the button 210 during the fetal heart rate detection, and the problem of loss of the fetal heart sound, thereby greatly improving the clinical use effect.
  • the function that the Doppler fetal heart rate meter 1000 can also realize and the structure for realizing the corresponding function will be described below.
  • the motherboard 200 can be provided with a wireless module, for example, a wireless connection such as Bluetooth or WIFI.
  • a wireless connection such as Bluetooth or WIFI.
  • the user can wirelessly connect the smart device (which can be a mobile phone or a tablet) to perform fetal heart detection, and the wireless antenna can be placed in the Doppler.
  • the tail end of the fetal heart rate 1000 that is, the position away from the head end of the housing 100, can be advantageously used to achieve the best effect of wireless transmission, and can achieve stability and reliability of wireless signal transmission.
  • the main board 200 may be provided with a headphone jack 220.
  • the housing 100 is provided with a headphone jack corresponding to the headphone jack 220, and the headphone hole may be disposed at the tail end of the housing 100.
  • the user can be conveniently used to listen to the fetal heart sound in a noisy environment, thereby further improving the user experience; by placing the earphone hole at the tail end of the housing 100, the user can not interfere with the normal hand. While the fetal heart is detected, it is convenient for the user to operate.

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Abstract

多普勒胎心仪，包括：壳体（100）、主板（200）、扬声器（400）和超声换能器（500）；扬声器（400）和超声换能器（500）安装在所述壳体（100）内；超声换能器（500）包括至少一个换能晶片，用于产生脉冲波；扬声器（400）和超声换能器均（500）与主板（200）电连接，壳体（100）内的头端设置超声换能器（500），壳体（100）内的尾端设置扬声器（400）和主板（200）。通过在壳体内布置扬声器、主板和超声换能器，可以使得多普勒胎心仪结构紧凑，体积小，而且可以减小声音系统的正反馈，可以降低自激啸叫的概率。

Description

多普勒胎心仪 技术领域
本公开涉及医疗设备技术领域，尤其涉及一种多普勒胎心仪。
背景技术
多普勒胎心仪在医院或者社区健康服务中心等医疗单位应用非常广泛，并逐渐深入到家庭应用中，并向小型化和一体化探头的趋势发展。多普勒胎心仪基本功能为听取胎心音和显示胎心率，一般检测一次胎心时间在1-10分钟左右。检测孕周范围一般需要覆盖从小孕周到大孕周的整个孕期范围，因此对于胎心检测灵敏度方面比一般胎监机器要求高，特别是在小孕周检测能力上。
基于如上胎心检测的预期使用要求，一体化多普勒胎心仪需要内部电源供电，一般采用电池供电的形式，需要内置扬声器发出胎心音，同时需要自带显示屏来显示胎心率，以方便用户读取胎心率值。由于一体机尺寸朝小型化发展，而相对来说扬声器、显示屏、电池等模组尺寸过大等因素的限制而无法设计出较好的满足临床使用的胎心多普勒一体机，存在许多问题：1、一体机尺寸无法做到小型化，同时比较笨重，用户手握不方便；2、多普勒胎心仪存在自激啸叫的问题，影响临床使用效果。
发明内容
本公开旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本公开提出一种多普勒胎心仪，该多普勒胎心仪结构紧凑，体积小。
根据本公开的多普勒胎心仪，包括：壳体、主板、扬声器和超声换能器；所述扬声器和所述超声换能器安装在所述壳体内；所述超声换能器包括至少一 个换能晶片，用于产生脉冲波；所述扬声器和所述超声换能器均与主板电连接，所述壳体内的头端设置所述超声换能器，所述壳体内的尾端设置所述扬声器和所述主板。
根据本公开实施例的多普勒胎心仪，通过在壳体内布置扬声器、主板和超声换能器，可以有效提高壳体内部的空间使用率，可以使得多普勒胎心仪结构紧凑，体积小。另外，本公开的实施例中将超声换能器与扬声器安装在壳体的同一安装空间，并且，超声换能器是工作在脉冲波模式的，可以降低自激啸叫的概率。
在本公开的一些示例中，所述壳体内包括间隔开的第一腔室和第二腔室；所述主板和所述扬声器位于所述第一腔室内，所述扬声器在所述第一腔室内位于所述主板的第一侧；所述超声换能器位于所述第二腔室内。
在本公开的一些示例中，所述壳体包括上壳体和下壳体，所述上壳体与所述下壳体上分别设置有隔板，所述上壳体与所述下壳体上的所述隔板相对设置以限定出所述第一腔室。
在本公开的一些示例中于，所述壳体还包括：头壳体；所述上壳体与所述下壳体上的所述隔板与所述头壳体限定出所述第二腔室。
在本公开的一些示例中，所述下壳体包括：凹陷的电池仓，形成在所述第一腔室内；所述超声换能器和所述扬声器分别位于所述电池仓的所述壳体的长度方向上的两侧。
在本公开的一些示例中，所述多普勒胎心仪还包括显示屏，所述显示屏与所述主板电连接且在所述第一腔室内位于所述主板的与所述第一侧相对的第二侧。
在本公开的一些示例中，所述主板和所述超声换能器通过线束连接，所述 上壳体和所述下壳体上的所述隔板中的至少一个设置有过线孔。
在本公开的一些示例中，还包括：固定套，所述固定套套设在所述扬声器上且固定在所述下壳体上，所述下壳体上设置有与所述扬声器对应的出声孔。
在本公开的一些示例中，所述下壳体包括：下壳体本体和电池仓盖体，所述电池仓盖体可拆卸地安装在所述下壳体本体上且与所述下壳体本体限定出所述电池仓。
在本公开的一些示例中，所述上壳体和所述下壳体的内表面上分别设置有触摸传感器，所述触摸传感器与所述主板电连接。
在本公开的一些示例中，所述头壳体上设置有触摸传感器，所述触摸传感器与所述主板电连接。
在本公开的一些示例中，所述电池仓内设置有电池弹簧，所述电池仓上还设置有电池弹簧孔，所述电池弹簧的一部分伸出所述电池弹簧孔且与所述主板焊接固定。
在本公开的一些示例中，所述主板上设置有显示屏支架，所述显示屏固定在所述显示屏支架上。
在本公开的一些示例中，所述主板上设置有耳机插座，所述壳体上设置有与所述耳机插座对应的耳机孔。
在本公开的一些示例中，所述显示屏与形成在所述上壳体的显示窗口相对应。
在本公开的一些示例中，所述固定套为软硅橡胶套且粘接在所述下壳体上。
附图说明
图1是用户使用多普勒胎心仪的使用状态图；
图2是根据本公开的一个实施例的多普勒胎心仪的结构示意图；
图3是根据本公开的另一个实施例的多普勒胎心仪的结构示意图；
图4是根据本公开实施例的多普勒胎心仪的爆炸图；
图5是主板、扬声器和下壳体的示意图；
图6是上壳体的结构示意图；
图7和图8分别是两种不同的超声换能器和头壳体的示意图；
图9是电池仓盖体和海绵垫的示意图；
图10是固定套和扬声器的示意图；
图11是沿图10的A-A线截取的剖视图；
图12是根据本公开的又一个实施例的多普勒胎心仪的示意图。
附图标记：
多普勒胎心仪1000；
壳体100；上壳体110；显示窗口111；隔板112；过线孔113；按键区114；
下壳体120；电池仓121；出声孔122；电池弹簧123；电池弹簧孔124；下壳体本体125；电池仓盖体126；海绵垫127；
头壳体130；手握部140；固定套150；触摸传感器160；第一腔室170；第二腔室180；线束190
主板200；按键210；耳机插座220；
显示屏300；柔性电路板310；显示屏支架320；挡尘圈330；显示面板340；
扬声器400；超声换能器500；超声发射晶片510；超声接收晶片520；
电池600。
具体实施方式
下面详细描述本公开的实施例，所述实施例的示例在附图中示出。下面通过参考附图描述的实施例是示例性的，旨在用于解释本公开，而不能理解为对本公开的限制。
下面参考图1-图12详细描述根据本公开实施例的多普勒胎心仪1000。需要说明的是，本公开的多普勒胎心仪1000为整体式结构，而非传统的分体式结构。
在根据本公开的一些实施例中，多普勒胎心仪1000包括：壳体100、主板200、扬声器400和超声换能器500。扬声器400和超声换能器500安装在壳体100内；超声换能器500包括至少一个换能晶片，用于产生脉冲波；扬声器400和超声换能器500均与主板200电连接，壳体100内的头端设置超声换能器500，壳体100内的尾端设置扬声器400和主板200。
需要说明的是，关于本公开实施例的多普勒胎心仪1000方向位置均以图1所示的操作位置为准。朝向用户头部的方向为上，朝向用户脚部的方向为下，朝向用户的腹部的方向为头，远离用户腹部的方向为尾。
在一些实施例中，壳体100内包括间隔开的第一腔室170和第二腔室180。主板200设置在壳体100的第一腔室内，其中主板200的延伸方向大体与壳体100的延伸方向相同，即头尾之间的延伸方向。
扬声器400与主板200电连接，而且扬声器400在第一腔室内位于主板200的第一侧，例如下侧。其中，在主板200的驱动下，扬声器400可以发出胎心音，以提升用户的使用感受。另外，由于扬声器400位于主板200的下侧， 这样可以合理利用主板200和壳体100的下内表面之间的空间，而且可以避免显示屏300和扬声器400相互冲突，从而可以使得扬声器400在壳体100内布置合理，相比现有技术中将扬声器通过线缆与主机连接，独立工作，播放胎心音频，本公开的扬声器、超声换能器和主板均设置在壳体内，实现真正一体式的便携式胎心多普勒仪，更加符合家用的需求，可以有利于实现多普勒胎心仪1000的小型化目标。
超声换能器500与主板200电连接，而且超声换能器500位于壳体100的第二腔室内。主板200可以用于驱动超声换能器500发射超声波，同时对超声换能器500拾取的超声多普勒信号进行放大、解调、滤波等处理，并将采集到的胎心数据进行胎心率计算处理和驱动扬声器400发出胎心音。
主板200上可以设置有超声模块、滤波放大模块、电源模块、音频功放模块等，超声模块布局在主板200的靠近超声换能器500的位置，音频功放模块放置于靠近扬声器400的位置，滤波模块放置于超声模块与音频功放模块之间，电源模块放置于靠近电池仓121的位置，以上模块布局有利于主板200的整体布局，可以进一步地提升多普勒胎心仪1000内部空间与产品性能。
而且超声换能器500位于壳体100的朝向人体的头端。由此，超声换能器500可以合理利用壳体100内的头端空间，而且可以有利于其发送超声波和接收超声多普勒信号。还有，这样还可以至少一定程度上增大扬声器400和超声换能器500之间的距离，可以减小声音系统的正反馈，可以降低自激啸叫的概率。
由此，根据本公开实施例的多普勒胎心仪1000，通过在壳体100内布置显示屏300、扬声器400、主板200和超声换能器500，可以有效提高壳体100内部的空间使用率，可以使得多普勒胎心仪1000结构紧凑，体积小。另外， 还可以至少一定程度上增大扬声器400和超声换能器500之间的距离，可以减小声音系统的正反馈，可以降低自激啸叫的概率。
在一些实施例中，壳体100上形成有电池仓121，当然壳体100上还可以形成有其他部件，例如，手握部140，手握部140可以供用户手部握住，这样可以便于用户握取并操纵多普勒胎心仪1000。电池仓121可以用于容纳电池600，电池600可以作为多普勒胎心仪1000的电能来源。超声换能器和扬声器位于电池仓的所述壳体的长度方向上的两侧。
在一些实施例中，多普勒胎心仪还包括显示屏300，显示屏300与主板200电连接，而且显示屏300在第一腔室内位于主板200的与第一侧相对的第二侧，例如上侧，具体地为上表面，显示屏300与显示窗口111相对应。显示屏300内的显示信息可以通过显示窗口111呈现给用户。而且，如此设置的显示屏300可以合理利用主板200和壳体100的上内表面之间的空间，可以使得显示屏300布置合理，可以提高壳体100内的空间利用率，有利于实现多普勒胎心仪1000的小型化目标。
在一些实施例中，壳体100上形成有显示窗口111，显示窗口111可以用于显示相应数据，例如，胎心率、胎动数等。显示窗口111位于壳体100的上表面。在本公开的一些实施例中，壳体可以不设置显示屏和显示窗口，如图12所示。
可选地，如图2所示，显示窗口111可以远离壳体100的头端设置。例如，显示窗口111可以相对手握部140靠近壳体100的尾端设置，其中，壳体100上的手握部140可以靠近壳体100的头端设置，这样可以便于用户握住多普勒胎心仪1000后观察显示窗口111处的胎心率，即图1所示的使用状态，这样可以使得极大程度地方便了用户，可以提升用户的使用体验。
电池仓121和扬声器400在壳体100的长度方向上间隔开设置。需要说明的是，壳体100的长度方向即图1所示的头端和尾端之间的延伸方向。这样电池仓121可以设置在壳体100的下内表面上，从而可以使得电池仓121位置布置合理，可以合理利用主板200的下方空间，可以有利于实现多普勒胎心仪1000的小型化目标。
进一步地，如图4和图5所示，扬声器400可以远离壳体100的头端设置。换言之，扬声器400可以远离超声换能器500设置，这样可以减小声音系统的正反馈，从而降低多普勒胎心仪1000的自激啸叫的概率。在其他实施例中，扬声器与电池仓的位置也可以交换。
其中，如图2所示，壳体100可以呈直筒状。直筒状的壳体100一方面可以便于用户手握，另一方面可以便于主板200的布置，可以有利于实现多普勒胎心仪1000的小型化设计目标。
可选地，如图2所示，壳体100的上表面可以呈襁褓状。换言之，壳体100朝向用户头部的表面为襁褓状，这样可以便于用户观察，以及可以便于用户手握，而且可以更加符合用户的使用特性，可以提升用户的使用体验。
在其它实施例中，头端不限于在胎心仪的底端位置，也可以在胎心仪的其它位置，只要用来测量的一端属于头端即可。
下面结合图4和图5详细描述壳体100的具体布置形式。
壳体100可以包括：上壳体110、下壳体120和头壳体130。显示窗口111形成在上壳体110上，上壳体110可以构成壳体100的上表面。下壳体120与上壳体110可以相对地安装，其中，上壳体110和下壳体120的安装方式不做限定，例如，上壳体110和下壳体120的内侧边缘上可以设置有卡接结构，上壳体110和下壳体120卡接固定；又如，上壳体110和下壳体120内部可以 设置有螺丝柱，螺丝穿过对应的螺丝柱以将两者相互固定；再如，上壳体110和下壳体120可以采用上述两种固定方式结合的形式固定。
上壳体110和下壳体120限定出第一腔室170，下壳体120包括凹陷的电池仓121，凹陷的电池仓形成在所述后壳120的第一腔室170内。头壳体130安装在上壳体110和下壳体120的头端,并且包围上壳体110和下壳体120的头端，而且头壳体130与上壳体110和下壳体120限定出第二腔室180。这样可以使得壳体100结构紧凑，而且可以更好地容纳内部各个部件。上壳体110和下壳体120的头端可以分别设置有外螺纹，头壳体130的内周壁上可以设置有内螺纹，头壳体130可以与上壳体110和下壳体120螺纹连接，螺纹连接的上壳体110、下壳体120和头壳体130之间安装效率高，易于拆卸。
进一步地，如图5和图6所示，上壳体110和下壳体120上分别设置有隔板112，具体地，隔板112分别设置在上壳体110和下壳体120的内表面的靠近头端的位置处，上壳体110和下壳体120上的隔板112相对设置以在上壳体110和下壳体120之间限定出第一腔室170，以及以与头壳体130限定出第二腔室180，主板200、显示屏300、扬声器400容纳在第一腔室170内，超声换能器500容纳在第二腔室180内。通过设置隔板112，可以有效将主板200、显示屏300、扬声器400与超声换能器500之间隔离开，可以进一步地解决多普勒胎心仪1000的自激啸叫的问题。
具体地，主板200和超声换能器500通过线束190连接，上壳体110和下壳体120上的隔板112中的至少一个上设置有过线孔。如图6所示，在本实施例中113，过线孔113设置在上壳体110的隔板112中，具体地设置在隔板的中部，过线孔113可以便于线束穿过，而且这样主板200和超声换能器500之间的线束长度较小，可以有利于实现多普勒胎心仪1000的小型化目标。位 于上壳体110上的隔板112设置有过线孔113，位于下壳体120上的隔板112未设置有过线孔113，这样可以保证线束在过线孔113内的可靠性。另外，通过线束连接主板200和超声换能器500，可以有利于超声信号的稳定可靠的传输，可以避免胎心音由于超声换能器500引线晃动而引入杂音，可以进一步提升多普勒胎心仪1000的产品性能。
超声换能器500的布置形式有多种，下面结合图7和图8详细描述。
现有技术的超声换能器的工作模式均采用连续波的工作模式，即采用超声发射换能器发射超声波，超声接收换能器接收多普勒回波信号的工作模式。但是在小型化的多普勒胎心仪中，连续波的工作模式会产生自激啸叫的问题。本公开中，超声换能器的工作模式优选的采用脉冲波的工作模式，即超声换能器可以采用超声发射与超声接收分时工作的形式，在头壳体130与孕妇肚皮接触面一定时，可以最大化的提高超声发射与超声接收波束的相交范围，从而能有效的扩大胎心检测范围而不增加探头的体积，做到小型化的目的。如图8所示，超声换能器500可以采用单平晶片的实现形式，也可以采用球面晶片的实现形式，球面晶片有利于进一步扩大胎心的检测范围。也可以采用多晶片并联阵列的形式。如图7所示，超声换能器500包括两个半圆晶片，其中一个晶片为超声发射晶片510，另外一个晶片为超声接收晶片520，超声检测的有效面积为两个晶片超声波束相交范围。其中，头壳体130内可以设置有用于支撑两个半圆晶片的支撑凸起。采用脉冲波可以有效地提升胎心检测范围的同时还可以有效的避免自激啸叫的问题，相应的调节发射与接收之间的时序即可以有效的控制胎心检测深度，可以有效的过滤浅表非胎心深度范围的噪音，从而避免浅表噪音信号引起自激啸叫。
下面再结合图4和图5详细描述扬声器400的固定方式。
具体地，多普勒胎心仪1000还可以包括：固定套150，固定套150套设在扬声器400上，如图10所示，扬声器400具有下边缘，固定套150上可以设置有环形凹槽，扬声器400的下边缘可以整体伸入环形凹槽内，由此，环形凹槽可以起到安装和固定扬声器400的下边缘的作用。而且固定套150固定在下壳体120上，下壳体120上设置有与扬声器400对应的出声孔122。换言之，扬声器400可以通过固定套150固定在下壳体120上，这样可以保证扬声器400在壳体100内的安装可靠性，而且扬声器400与显示屏300可以在主板200的上下两侧相对应设置，这样可以使得壳体100内部空间利用更加合理，可以有利于实现多普勒胎心仪1000的小型化目标。另外，出声孔122可以便于扬声器400向外界输出音频，可以便于用户听取胎心音。
进一步地，固定套150可以为软硅胶套。由此，固定套150可以达到有效的减振作用，从而可以降低扬声器400发声振动引起的壳体100振动，进而可以有效降低多普勒胎心仪1000自激啸叫的概率。
其中，下壳体120上可以设置有螺丝孔，螺丝穿过软硅胶套后固定在下壳体120上的螺丝孔内，这样可以有效将软硅胶套固定在下壳体120上，可以保证扬声器400在壳体100内的固定可靠性。其中，螺丝的数量不做限定，例如，如图5所示，螺丝可以为两颗，当然，螺丝还可以为三颗、四颗，甚至更多，多颗螺丝可以均匀分布在软硅胶套的周向上。采用两颗螺钉紧固可以在保证紧固效果的同时使多普勒胎心仪1000的内部空间小型化。
还有，软硅胶套的设置还可以有效隔离扬声器400的前音腔和后音腔，可以避免发生前后音腔的声音短路，可以提升电声转换效率，可以优化胎心音质，进而可以有利于胎心音的发声播放。
另外，软硅胶套的设置还有利于提高防水等级的设计，使液态水只能进入 到扬声器400组成的前音腔，水无法再通过软硅胶进入到多普勒胎心仪1000内部，从而可以进一步提升多普勒胎心仪1000的防水性能。
更进一步地，固定套150为软硅橡胶套的情况下，可以粘接在下壳体120上。采用软硅橡胶套直接粘接的方式可以不用螺丝固定于下壳体120上，从而可以进一步地使多普勒胎心仪1000的内部空间小型化。
另外，在其他实施例中，扬声器400可以直接通过螺钉或粘贴等固定方式，直接固定于下壳体120上。
下面再结合图4和图5详细描述一下电池仓121的布置形式。
可选地，电池仓121形成在下壳体120的靠近壳体100头端的位置。这样电池仓121可以有效将扬声器400和超声换能器500间隔开，可以进一步地降低多普勒胎心仪1000自激啸叫的概率，而且这样可以合理利用下壳体120处的空间，可以使得多普勒胎心仪1000结构紧凑，体积小。
进一步地，如图5所示，电池仓121内可以设置有电池弹簧123，电池仓121上还可以设置有电池弹簧孔124，电池弹簧123的一部分伸出电池弹簧孔124，而且电池弹簧123的一部分与主板200焊接固定。其中，主板200上可以设置有焊盘孔，电池弹簧123的一部分与焊盘孔焊接固定。需要说明的是，电池弹簧123的一部分从下壳体120的外侧向壳体100内部伸入，然后再与主板200上的焊盘孔焊接固定，这样至少一定程度上可以起到固定下壳体120和主板200的作用，可以提高主板200在壳体100内的安装可靠性。另外，这样还可以省略连接线，可以避免多普勒胎心仪1000内部连接线混乱，可以在进一步地缩减多普勒胎心仪1000的内部空间的同时还可以保证连接的可靠性，进而可以提升多普勒胎心仪1000的产品性能。电池600正负极弹簧可以直接通过卡位与下壳体120卡紧固定。
其中，下壳体120和主板200之间还可以卡接固定，以及下壳体120和主板200之间还可以通过螺丝固定。
还需要说明的是，下壳体120的结构还需要根据电池600的选取调整。例如，电池600如果选用不可充电电池，那么需要设置方便安装拆卸电池600的电池仓盖体126，具体地，如图4和图9所示，下壳体120可以包括：下壳体本体125和电池仓盖体126，电池仓盖体126能够拆卸地安装在下壳体本体125上，而且电池仓盖体126与下壳体本体125限定出电池仓121。在更换电池600时，用户可以将电池仓盖体126从下壳体本体125上拆卸下来。需要说明的是，如图9所示，电池仓盖体126上还可以垫设有海绵垫127，可以有效保护电池600和电池仓盖体126。
又如，电池600如果选用可充电电池，可充电电池内置在多普勒胎心仪1000内部而不需要设置电池仓盖体126，从而可以有利于多普勒胎心仪1000的整体造型设计不受破坏，可以在缩小多普勒胎心仪1000内部空间的同时还可以有利于提高多普勒胎心仪1000的防水等级。
下面再参照图2详细描述一下多普勒胎心仪1000的控制形式。
可选地，如图2所示，上壳体110和下壳体120的内表面上分别设置有触摸传感器160，触摸传感器160与主板200电连接。其中，触摸传感器160可以大体呈长圆形。当用户触摸触摸传感器160时，触摸传感器160可以产生一个感应信号，此感应信号触发设备开关机动作，由此，可以实现当用户手握接触设备时设备的开机，当设备从身体部位离开后可以实现设备的自动关机，从而可以极大程度简化多普勒胎心仪1000的开关机操作，可以使得多普勒胎心仪1000的智能化，而且能有效节约电池600电量，延长电池600续航时间。
还有，如此设置的多普勒胎心仪1000可以整体美观耐用、成本低廉，整 个机身可以做到没有任何一个机械按键，结构整体完整性没有受到破坏，可以实现有效的防水设计，同时不会因为操作按键产生设备振动影响胎心信号的减弱或丢失，大大提高了设备检测的可靠性。
多个触摸传感器160可以以并联的形式连接，即电气上是连为一体的，多个触摸传感器160可以分别布置于壳体100的前、后、左、右的不同部位，从而可以保证用户握住手握部140时必然有触摸传感器160。此触摸传感器160可以贴于壳体100的内表面，触摸传感器160可以以铜箔、导电海绵、触摸弹簧等方式实现其感应功能。
可选地，如图3所示，头壳体130上可以设置有触摸传感器160，触摸传感器160与主板200电连接，除此之外，图3和图2相同。可以理解的是，位于头壳体130处的触摸传感器160可以用于识别头壳体130是否与用户肚皮接触，头壳体130与用户肚皮接触与否会使触摸传感器160产生一个相对应的触摸信号，此触摸信号可以控制主板200的超声模块是否工作；当多普勒胎心仪1000接触孕妇肚皮时控制主板200的超声模块进行工作，当多普勒胎心仪1000未接触孕妇肚皮时控制主板200停止工作，这样可以有效地提升超声换能器500的使用寿命，可以减小超声辐射，可以进一步提升多普勒胎心仪1000的产品续航能力。
下面再结合图4-图6详细描述显示屏300的布置形式。
可选地，显示屏300可以通过导电橡胶连接器连接在主板200上。导电橡胶连接器可以使得显示屏300和主板200之间电气连接可靠，可以使得显示屏300显示数据稳定。
另一种可选地，如图4所示，显示屏300可以通过柔性电路板310连接在主板200上。其中，柔性电路板310可以直接焊接于主板200上，这样可以在 进一步地缩减多普勒胎心仪1000内部空间的同时，可以进一步地提升显示屏300与主板200之间电气连接的可靠性和稳定性，从而可以有利于显示信号的有效稳定传输。
具体地，如图4和图5所示，主板200上可以设置有显示屏支架320，显示屏300固定在显示屏支架320上。导电橡胶连接器或者柔性电路板310的一部分可以容纳在显示屏支架320的下部空间中，这样可以更好地降低显示屏300所占用的空间。其中，显示屏支架320可以起到将显示屏300固定在主板200上的作用，从而可以有效提高主板200和显示屏300之间的电气连接的可靠性和稳定性，从而可以有利于显示信号的有效稳定传输。还有，如果采用导电橡胶连接器结合显示屏支架320的固定方式可以有效的缩减多普勒胎心仪1000的内部空间，可以有利于多普勒胎心仪1000的小型化设计。
根据本公开的一种可选方式，如图6所示，设置有沿显示屏300周向延伸的挡尘圈330。挡尘圈330可以贴于显示屏300周向上，挡尘圈330可以有效避免灰尘进入显示屏300，从而可以提高显示屏300的显示效果。挡尘圈330可以为显示屏海绵圈。
还有，如图6所示，显示窗口111处还可以设置有显示面板340，显示面板340上设置有透明显示区域，显示屏300上显示的信息可以有效地通过显示窗口111和显示面板340显示出来，从而可以方便用户有效地读取显示屏300信息。
可选地，如图4-图6所示，主板200上可以设置有多个按键210，壳体100的内表面上设置有多个按键区114，多个按键210与多个按键区114对应设置。例如，按键210可以为三个，按键区114可以为三个，三个按键210和三个按键区114一一对应设置。上述多个按键210可以分别具有开关机、胎 心音量调节的功能。
进一步地，按键210可以采用触摸按键的实现形式，因此按键210可以采用触摸弹簧或者导电海绵来实现，主板200中可以设置有触摸驱动模块，从而有效实现触摸按键的功能。按键210采用触摸按键的实现方式，这样可以不破坏结构外形，保持多普勒胎心仪1000结构的完整性，以此同时可以有效提升多普勒胎心仪1000的防水性能；同时在操作触摸按键时不会像机械按键操作时产生振动，从而可以有效避免在胎心检测过程中按键210操作振动引起的胎心位置的偏移，胎心音丢失的问题，进而可以大大提升临床使用效果。
下面再说明多普勒胎心仪1000还可以实现的功能以及实现相应功能的结构。
可选地，主板200上可以设置有无线模块，例如采用蓝牙或者WIFI等无线连接，用户可以通过无线连接智能设备(可以是手机或者平板等)软件进行胎心检测，无线天线可以置于多普勒胎心仪1000的尾端，即远离壳体100的头端的位置，从而可以有利于达到无线传输的最佳效果，可以实现无线信号传输的稳定性与可靠性。
可选地，如图4和图5所示，主板200上可以设置有耳机插座220，壳体100上设置有与耳机插座220对应的耳机孔，耳机孔可以设置在壳体100的尾端。由此，可以便于用户在嘈杂的环境下使用耳机进行听取胎心音，从而可以进一步地提升用户体验感；通过将耳机孔设置在壳体100的尾端，这样可以在不干涉用户正常的手握胎心检测的同时，可以方便用户操作。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说 明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本公开的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开的限制，本领域的普通技术人员在本公开的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (15)

  1. 多普勒胎心仪，其特征在于，包括：壳体、主板、扬声器和超声换能器；所述扬声器和所述超声换能器安装在所述壳体内；所述超声换能器包括至少一个换能晶片，用于产生脉冲波；所述扬声器和所述超声换能器均与主板电连接，所述壳体内的头端设置所述超声换能器，所述壳体内的尾端设置所述扬声器和所述主板。
  2. 根据权利要求1所述的多普勒胎心仪，其特征在于，所述壳体内包括间隔开的第一腔室和第二腔室；所述主板和所述扬声器位于所述第一腔室内，所述扬声器在所述第一腔室内位于所述主板的第一侧；所述超声换能器位于所述第二腔室内。
  3. 根据权利要求2所述的多普勒胎心仪，其特征在于，所述壳体包括上壳体和下壳体，所述上壳体与所述下壳体上分别设置有隔板，所述上壳体与所述下壳体上的所述隔板相对设置以限定出所述第一腔室。
  4. 根据权利要求3所述的多普勒胎心仪，其特征在于，所述壳体还包括：
    头壳体；所述上壳体与所述下壳体上的所述隔板与所述头壳体限定出所述第二腔室。
  5. 根据权利要求3所述的多普勒胎心仪，其特征在于，所述下壳体包括：凹陷的电池仓，形成在所述第一腔室内；
    所述超声换能器和所述扬声器分别位于所述电池仓的所述壳体的长度方向上的两侧。
  6. 根据权利要求3所述的多普勒胎心仪，其特征在于，所述多普勒胎心仪还包括显示屏，所述显示屏与所述主板电连接且在所述第一腔室内位于所述主板的与所述第一侧相对的第二侧。
  7. 根据权利要求3所述的多普勒胎心仪，其特征在于，所述主板和所述超声换能器通过线束连接，所述上壳体和所述下壳体上的所述隔板中的至少一个设置有过线孔。
  8. 根据权利要求3所述的多普勒胎心仪，其特征在于，还包括：固定套，所述固定套套设在所述扬声器上且固定在所述下壳体上，所述下壳体上设置有与所述扬声器对应的出声孔。
  9. 根据权利要求3所述的多普勒胎心仪，其特征在于，所述下壳体包括：下壳体本体和电池仓盖体，所述电池仓盖体可拆卸地安装在所述下壳体本体上且与所述下壳体本体限定出所述电池仓。
  10. 根据权利要求3所述的多普勒胎心仪，其特征在于，所述上壳体和所述下壳体的内表面上分别设置有触摸传感器，所述触摸传感器与所述主板电连接。
  11. 根据权利要求4所述的多普勒胎心仪，其特征在于，所述头壳体上设置有触摸传感器，所述触摸传感器与所述主板电连接。
  12. 根据权利要求5所述的多普勒胎心仪，其特征在于，所述电池仓内设置有电池弹簧，所述电池仓上还设置有电池弹簧孔，所述电池弹簧的一部分伸出所述电池弹簧孔且与所述主板焊接固定。
  13. 根据权利要求6所述的多普勒胎心仪，其特征在于，所述主板上设置有显示屏支架，所述显示屏固定在所述显示屏支架上。
  14. 根据权利要求1所述的多普勒胎心仪，其特征在于，所述主板上设置有耳机插座，所述壳体上设置有与所述耳机插座对应的耳机孔。
  15. 根据权利要求6所述的多普勒胎心仪，其特征在于，所述显示屏与形成在所述上壳体的显示窗口相对应。
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