CN114947952A

CN114947952A - Fetal heart detecting instrument

Info

Publication number: CN114947952A
Application number: CN202111549629.8A
Authority: CN
Inventors: 姚烨
Original assignee: Changzhou Second Peoples Hospital
Current assignee: Changzhou Second Peoples Hospital
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-08-30

Abstract

The invention relates to the technical field of medical detection instruments, in particular to a fetal heart detection instrument. Comprises a detector shell, a heating unit and a detection unit; the heating unit is arranged in a detector shell, and the bottom of the detector shell is of an open structure; the detection unit comprises a detection box and a translation mechanism; the detection box is arranged at an opening at the bottom of the detector shell, a groove is arranged at the bottom of the detection box, the groove is of a fan-shaped ring structure, and a plurality of groups of sliding grooves are formed in the inner wall of the groove at equal intervals; the translation mechanism is located in the detection box, and a plurality of groups of sliding parts of the translation mechanism are respectively connected in the sliding grooves in each group in a sliding mode. The invention realizes the automatic detection function, so that the pregnant woman can finish the fetal heart detection work without the help of other people. Thereby improving the convenience of fetal heart detection.

Description

Fetal heart detecting instrument

Technical Field

The invention belongs to the technical field of medical detection instruments, and particularly relates to a fetal heart detection instrument.

Background

The fetal heart detecting instrument is a common medical instrument and mainly used for detecting the heartbeat of a fetus. In the past, the fetal heart detecting instrument is heavy in size and very complicated and time-consuming to operate due to limited conditions. So that the test can only be performed at the hospital with the help of a doctor.

However, with the development of science and technology, fetal heart detecting instruments are gradually developed towards portability, so that household fetal heart detecting instruments are also developed.

However, the household fetal heart detecting instrument is still tedious to use, and needs to hold the probe by other people to find and detect the fetal heart beat point, so that the detecting time is prolonged, and meanwhile, the fetal heart beat point cannot be accurately found due to the fact that the probe cannot be held by the other people, the detecting accuracy is reduced, and the detecting convenience is also reduced.

Disclosure of Invention

Aiming at the problems, the invention provides a fetal heart detection instrument, which comprises a detector shell, a heating unit and a detection unit; the heating unit is arranged in the detector shell, and the bottom of the detector shell is of an open structure;

the detection unit comprises a detection box and a translation mechanism; the detection box is arranged at an opening at the bottom of the detector shell, a groove is arranged at the bottom of the detection box, the groove is of a fan-shaped ring structure, and a plurality of groups of sliding grooves are formed in the inner wall of the groove at equal intervals; the translation mechanism is positioned in the detection box, a plurality of groups of sliding parts of the translation mechanism are respectively connected in each group of sliding grooves in a sliding manner, the bottoms of the plurality of groups of sliding parts of the translation mechanism penetrate through the outside of the detection box, and a group of ultrasonic probes are respectively installed on the sliding parts; a group of coupling liquid brushing mechanisms is fixedly arranged between every two adjacent groups of ultrasonic probes;

and a plurality of groups of warm air ports are evenly distributed on the inner wall of the groove.

Furthermore, translation mechanism includes servo motor and lead screw, servo motor installs on a detection case lateral wall, the lead screw is located in the detection case, just lead screw one end transmission is connected on servo motor's the output.

Furthermore, a first sliding block is connected to the screw rod in a threaded mode, a probe mounting plate is fixedly mounted at the bottom of the first sliding block, and a plurality of groups of connecting springs are arranged at the bottom of the probe mounting plate at equal intervals.

Furthermore, second sliding blocks are fixedly installed at the bottom of the connecting spring, the number of the second sliding blocks is the same as that of the ultrasonic probes and that of the sliding grooves, and a plurality of groups of the second sliding blocks are respectively connected to the sliding grooves in each group in a sliding manner; and the plurality of groups of ultrasonic probes are respectively arranged at the bottom of each group of second sliding blocks.

Further, the coupling liquid brushing mechanism comprises a sponge bottom frame; the utility model discloses a sponge mounting groove, including sponge chassis, coupling liquid, sponge chassis, sponge mounting groove both ends are installed respectively on a set of ultrasonic probe, just sponge chassis top is equipped with the coupling liquid import, the sponge mounting groove bottom has been seted up, the sponge draw-in groove has all been seted up on sponge mounting groove both sides wall.

Furthermore, the coupling liquid coating mechanism also comprises a sponge mounting block and a coating sponge body; the sponge mounting block is movably mounted in the sponge mounting groove, and two groups of sponge clamping blocks are symmetrically mounted on two side walls of the sponge mounting block; the two groups of sponge clamping blocks can be respectively and movably clamped in the two groups of sponge clamping grooves; the brushing sponge body is arranged at the bottom of the sponge mounting block, and the height of the bottom of the brushing sponge body is lower than that of the ultrasonic probe.

Furthermore, a coupling liquid outlet pipe is arranged on the sponge mounting block, one end of the coupling liquid outlet pipe is communicated with the coupling liquid inlet, and the other end of the coupling liquid outlet pipe is communicated with the brushing sponge body.

Further, the heating unit comprises an electric heater, a transmission pipe and an air outlet main pipe; the electric heater is fixedly installed in the detector shell, one end of the transmission pipe is communicated with the output end of the electric heater, and the other end of the transmission pipe penetrates into the detection box and is communicated with the air outlet main pipe.

Furthermore, the bottom of the air outlet main pipe is communicated with a plurality of groups of air outlet sub-pipes, the number of the air outlet sub-pipes is the same as that of the warm air ports, and the other ends of the air outlet sub-pipes are respectively communicated with the warm air ports.

Furthermore, a guide fan is arranged at the joint of the transmission pipe and the air outlet main pipe, an air inlet pipe is communicated with the transmission pipe, and the other end of the air inlet pipe penetrates through the outer part of the detector shell.

The invention has the beneficial effects that:

1. the translation mechanism drives the ultrasonic probes arranged at equal intervals to do reciprocating motion, fetal heartbeats received at different positions are recorded in real time, and the fetal heartbeats are displayed on the touch display in a wave curve mode. The closer to the heart beat point of the fetus, the stronger the signal received by the ultrasonic probe, and the larger the fluctuation of the waveform curve, thereby realizing the function of automatically searching for the heart beat detection. And because the groove is of a fan-shaped annular structure, not only can the raised abdomen of the pregnant woman be completely included, but also all groups of ultrasonic probes can be always kept at the same distance with the abdomen of the pregnant woman, and the detection accuracy is improved. When the heartbeat point is detected, the ultrasonic probe stops reciprocating and monitors the heartbeat of the fetus in real time. The automatic detection function is realized, so that the pregnant woman can finish fetal heart detection without the help of other people. Thereby improving the convenience of fetal heart detection.

2. The groups of the brushing sponge bodies can be driven to reciprocate by the reciprocating movement of the groups of the ultrasonic probes. The coupling liquid can be uniformly coated on the abdomen of the pregnant woman, the function of automatically coating the coupling liquid is realized, the preparation time of the early fetal heart detection is reduced, and the early preparation work of the fetal heart detection can be carried out on the pregnant woman without the help of other people.

3. When the pregnant woman detects the fetal heart, the electric heater is started by operating the touch display, heat energy is generated by the work of the electric heater and enters the transmission pipe, and then the heat energy is combined with external air entering from the air inlet pipe to generate hot air. And then the hot air is formed by the work of the guide fan and then enters each group of air outlet sub-pipes through the air outlet main pipe. And finally blown to the body of the pregnant woman through each group of warm air ports. Not only improves the comfort of the pregnant woman, but also can prevent the coupling liquid from being prematurely solidified when in contact with the external cold air. Therefore, the quality of the fetal heart detection is improved.

4. Through second electric telescopic handle and universal ball with the height and the angular adjustment of touch-control display to suitable position, when the pregnant woman lies flat on the detection bed body, drive the detector shell through the electric lift platform and descend to the abdominal position of pregnant woman, then the pregnant woman can independently accomplish child heart detection work through operating the touch-control display for detecting instrument not only can use under doctor's help, also can carry out independent use under the condition of no other people's help. The pregnant woman can carry out fetal heart detection under different conditions, and the overall compatibility of the detection instrument is improved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 shows a schematic structural diagram of a detection apparatus according to an embodiment of the present invention;

FIG. 2 shows a schematic cross-sectional view of a meter housing according to an embodiment of the invention;

FIG. 3 is a schematic structural view of a support unit and a meter housing according to an embodiment of the present invention, with the support unit and the meter housing disassembled;

FIG. 4 shows a schematic cross-sectional view of a detection unit according to an embodiment of the invention;

FIG. 5 shows a schematic bottom view of a detection unit according to an embodiment of the invention;

FIG. 6 shows an enlarged schematic view within circle A of FIG. 5 according to an embodiment of the invention;

FIG. 7 shows a schematic structural diagram of a coupling fluid painting mechanism according to an embodiment of the invention;

FIG. 8 shows an exploded view of a sponge chassis and a painting sponge body according to an embodiment of the invention;

FIG. 9 shows a schematic view of the connection of a warming unit and a detection box according to an embodiment of the present invention.

In the figure: 100. a support unit; 110. an electric lifting rod; 120. a first electric telescopic rod; 130. a detector jaw; 200. a display unit; 210. a second electric telescopic rod; 220. a universal ball; 230. a display connecting rod; 240. a touch-sensitive display; 300. a detector housing; 310. a housing slot; 400. a coupling liquid storage tank; 500. a warming unit; 510. an electric heater; 520. a conveying pipe; 530. a guide fan; 540. an air outlet main pipe; 550. an air outlet pipe; 560. an air inlet pipe; 600. a detection unit; 610. a detection box; 620. a groove; 621. a chute; 622. a warm air port; 630. a servo motor; 631. a screw rod; 632. a first slider; 633. a connecting spring; 634. a second slider; 640. an ultrasonic probe; 635. mounting a probe on a plate; 650. a coupling liquid brushing mechanism; 651. a sponge underframe; 652. a coupling fluid inlet; 653. a sponge mounting groove; 654. a sponge clamping groove; 655. a sponge mounting block; 656. a sponge fixture block; 657. brushing the sponge body; 658. a coupling liquid outlet pipe; 700. a central control processor; 800. a horn.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention provides a fetal heart detecting instrument. Including a support unit 100, a meter housing 300, a warming unit 500, and a detection unit 600. Illustratively, as shown in FIGS. 1 and 2, the monitor housing 300 is removably attached to the output of the support unit 100.

The bottom of the detector housing 300 is of an open structure, and two sets of housing slots 310 are symmetrically formed in the outer walls of the two sides of the detector housing 300.

The casing of the detection unit 600 is fixedly installed at the bottom opening of the casing 300 of the detector. The detecting unit 600 is used for performing fetal heart detection on the pregnant woman.

The heating unit 500 is fixedly installed in the housing 300, and the output end of the heating unit 500 is communicated with the inner cavity of the detecting unit 600. When the pregnant woman detects the fetal heart, warm air can be provided for the abdomen of the pregnant woman through the heating unit 500, so that the coupling liquid is prevented from being solidified due to the fact that the coupling liquid is in contact with low-temperature air, and meanwhile, the comfort level of the pregnant woman during fetal heart detection is improved.

Preferably, a central control processor 700 is fixedly mounted on the housing 300, and the central control processor 700 is electrically connected with the detecting unit 600 and the heating unit 500. The central control processor 700 is fixedly provided with a loudspeaker 800, and the loudspeaker 800 is electrically connected with the central control processor 700. The central processor 700 is used to control the working states of the detecting unit 600 and the warming unit 500.

A coupling liquid storage tank 400 is fixedly mounted in the detector housing 300, and an output end of the coupling liquid storage tank 400 is communicated with the detection unit 600. The coupling liquid storage tank 400 is used for storing coupling liquid required during the fetal heart detection.

The supporting unit 100 is fixedly provided with a display unit 200, and the display unit 200 is electrically connected with the central control processor 700. The display unit 200 is used for displaying the fetal heart detection result.

The supporting unit 100 includes two sets of electric lift rods 110 that are symmetrical to each other, and exemplarily, as shown in fig. 3, two sets of all be equipped with a set of electric lift rod 120 on the output of electric lift rod 110, two sets of all fixed mounting has a set of detector jack catch 130 on the output of first electric lift rod 120, and two sets of detector jack catch 130 can be movably clamped in two sets respectively in the shell draw-in groove 310.

When a fetal heart detecting instrument needs to be carried out, firstly, two sets of electric lifting rods 110 are respectively arranged on two sides of a detecting bed body, then the detector shell 300 is placed right above the detecting bed body, then two sets of first electric telescopic rods 120 are started, and the two sets of first electric telescopic rods 120 are enabled to drive the two sets of detector clamping jaws 130 to be respectively clamped in the two sets of shell clamping grooves 310, so that the installation work of the detector shell 300 is completed. Then, the height and the angle of the display unit 200 are adjusted, so that the pregnant woman can freely observe and operate the display unit 200 even if lying on the detection bed body. Then the pregnant woman lies on the detection bed body, and the abdomen is positioned under the shell 300 of the detector. Then, the electric lifting rod 110 can drive the detector housing 300 to descend to the same height as the abdomen of the pregnant woman by operating the display unit 200, and the detection unit 600 is started to start detection. The process is simple and convenient, and the pregnant woman can independently complete the installation and detection work.

The display unit 200 includes a second electric telescopic rod 210, for example, the second electric telescopic rod 210 is fixedly installed on one of the groups of the electric lifting rods 110, a universal ball 220 is fixedly installed on an output end of the second electric telescopic rod 210, a display connecting rod 230 is hinged on the universal ball 220, a touch display 240 is fixedly installed on the display connecting rod 230, and the touch display 240 is electrically connected with the central control processor 700.

When the touch display 240 is adjusted, the second electric telescopic rod 210 is first started, so that the touch display 240 can be adjusted to a suitable position according to the height of the detection bed. Then, the touch display 240 is adjusted to a proper angle by adjusting the direction of the universal ball 220, so that the pregnant woman still can observe and operate the touch display 240 when lying on the detection bed body for fetal heart detection.

The height and angle of the touch display 240 are adjusted to a proper position through the second electric telescopic rod 210 and the universal ball 220, when the pregnant woman lies flat on the detection bed body, the electric lifting rod 110 can drive the detector shell 300 to descend to the position of the abdomen of the pregnant woman, and then the pregnant woman can independently complete fetal heart detection work by operating the touch display 240. Not only satisfies the household function of the detection instrument, but also improves the use convenience.

The inspection unit 600 includes an inspection box 610, a translation mechanism, and a plurality of sets of ultrasonic probes 640. For example, as shown in fig. 4, 5 and 6, the detection box 610 is fixedly installed at an opening at the bottom of the detector housing 300, a groove 620 is formed at the bottom of the detection box 610, the groove 620 is a fan-shaped ring structure, and a plurality of sets of sliding grooves 621 are formed on the inner wall of the groove 620 at equal intervals. And a plurality of groups of warm air ports 622 are evenly distributed on the inner wall of the groove 620. Translation mechanism includes servo motor 630 and lead screw 631, servo motor 630 installs on a detection case 610 lateral wall, lead screw 631 is located in detection case 610, just lead screw 631 one end transmission is connected on servo motor 630's the output. The screw 631 is connected with a first slider 632 through threads, the bottom of the first slider 632 is fixedly provided with a probe mounting plate 635, and a plurality of groups of connecting springs 633 are arranged at the bottom of the probe mounting plate 635 at equal intervals. The bottom of the connecting spring 633 is fixedly provided with a second slider 634, the number of the second sliders 634 is the same as the number of the ultrasonic probes 640 and the number of the sliding grooves 621, and a plurality of groups of the second sliders 634 are respectively connected to each group of the sliding grooves 621 in a sliding manner. A plurality of groups of the ultrasonic probes 640 are respectively and fixedly installed at the bottom of each group of the second sliding blocks 634. And the ultrasonic probe 640 is electrically connected with the central processor 700. A group of coupling liquid brushing mechanism 650 is fixedly installed between every two adjacent groups of ultrasonic probes 640, and the input end of the coupling liquid brushing mechanism 650 is communicated with the output end of the coupling liquid storage tank 400.

The coupling fluid brushing mechanism 650 includes a sponge chassis 651, a sponge mounting block 655, and a brushing sponge body 657. For example, as shown in fig. 7 and 8, both ends of the sponge bottom frame 651 are respectively mounted on a set of ultrasonic probes 640, and a coupling liquid inlet 652 is formed at the top of the sponge bottom frame 651, and the coupling liquid inlet 652 is communicated with the coupling liquid storage tank 400 through a connecting pipe. Sponge mounting grooves 653 are formed in the bottom of the sponge bottom frame 651, and sponge clamping grooves 654 are formed in two side walls of the sponge mounting grooves 653. The sponge mounting block 655 is movably mounted in the sponge mounting groove 653, and two sets of sponge clamping blocks 656 are symmetrically mounted on two side walls of the sponge mounting block 655. The two sets of sponge clamping blocks 656 can be movably clamped in the two sets of sponge clamping grooves 654 respectively. The brushing sponge body 657 is installed at the bottom of the sponge installation block 655, and the height of the bottom of the brushing sponge body 657 is lower than that of the ultrasonic probe 640. A coupling liquid outlet pipe 658 is arranged on the sponge mounting block 655, one end of the coupling liquid outlet pipe 658 is communicated with the coupling liquid inlet 652, and the other end is communicated with the brushing sponge body 657.

When the fetal heart detection work is performed, firstly, the height of the detection box 610 is adjusted to the abdomen of the pregnant woman by controlling the electric lifting rod 110, so that the brushing sponge body 657 can contact the abdomen of the pregnant woman. Then, the valve of the coupling liquid storage tank 400 is started to inject the coupling liquid into each group of coupling liquid outlet pipes 658, so that the coupling liquid can finally permeate into each group of brushing sponge bodies 657. Then the servo motor 630 is started, the screw rod 631 is driven to rotate by the servo motor 630, and the ultrasonic probes 640 of each group are driven to simultaneously reciprocate on the abdomen of the pregnant woman, so that the function of automatically finding the fetal heart position is realized. And the groups of brushing sponge bodies 657 can be driven to reciprocate by the reciprocating motion of the groups of ultrasonic probes 640. The coupling liquid can be uniformly coated on the abdomen of the pregnant woman, the function of automatically coating the coupling liquid is realized, the preparation time of the fetal heart in the early stage of detection is reduced, the pregnant woman can also carry out the early stage preparation work of the fetal heart detection without the help of other people, and therefore the detection convenience is improved.

When the ultrasonic probes 640 reciprocate, the fetal heartbeats received at different positions are recorded in real time and displayed on the touch display 240 in a wave curve manner. The closer to the heart beat point of the fetus, the stronger the signal received by the ultrasonic probe 640, and the greater the fluctuation of the waveform. When the waveform fluctuation detected by one group of ultrasonic probes 640 is maximum at a certain point, the information is fed back to the central processor 700, then the central processor 700 turns off the translation mechanism, so that each group of ultrasonic probes 640 does not reciprocate any more, and then turns off the other groups of ultrasonic probes 640. The heartbeat of the fetus is monitored in real time only by the group of ultrasonic probes 640, so that the heartbeat data is converted into a waveform curve to be displayed on the touch display 240, and the heartbeat sound of the fetus is amplified and broadcast through the loudspeaker 800, so that the pregnant woman can hear the heartbeat sound of the fetus.

The translation mechanism drives the ultrasonic probes 640 arranged at equal intervals to reciprocate, so that the heartbeat point of the fetus can be found without manual finding. Moreover, as the groove 620 is of a fan-shaped annular structure, not only can the raised abdomen of the pregnant woman be completely included, but also all groups of ultrasonic probes 640 can be always kept at the same distance with the abdomen of the pregnant woman, so that the detection accuracy is improved. When the heartbeat point is detected, the ultrasonic probe 640 stops reciprocating and monitors the heartbeat of the fetus in real time. The automatic detection function is realized, so that the pregnant woman can finish fetal heart detection without the help of other people. Thereby improving the convenience of fetal heart detection.

The warming unit 500 includes an electric heater 510, a transmission pipe 520, and an air outlet main pipe 540. For example, as shown in fig. 9, the electric heater 510 is fixedly installed in the detector housing 300, one end of the transmission tube 520 is communicated with the output end of the electric heater 510, and the other end of the transmission tube 520 penetrates into the detection box 610 and is communicated with the air outlet main pipe 540. A guiding fan 530 is disposed at a joint of the transmission pipe 520 and the air outlet main pipe 540, an air inlet pipe 560 is communicated with the transmission pipe 520, and the other end of the air inlet pipe 560 penetrates outside the detector housing 300. The bottom of the air outlet main pipe 540 is communicated with a plurality of groups of air outlet sub-pipes 550, the number of the air outlet sub-pipes 550 is the same as that of the warm air ports 622, and the other ends of the air outlet sub-pipes 550 are respectively communicated with the warm air ports 622.

While the pregnant woman performs fetal heart detection, the electric heater 510 is turned on by operating the touch display 240, heat energy is generated by the operation of the electric heater 510 and enters the transfer tube 520, and then hot air is generated in combination with external air entering from the air inlet tube 560. The hot air is formed by the operation of the guiding fan 530, and then enters each set of air outlet sub-pipes 550 through the air outlet main pipe 540. And finally blown onto the body of the pregnant woman through the respective sets of warm air ports 622. Not only improves the comfort level of the pregnant woman, but also can prevent the coupling liquid from prematurely solidifying when in contact with external cold air. Therefore, the quality of fetal heart detection is improved.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A fetal heart detecting instrument, characterized in that: comprises a detector shell (300), a warming unit (500) and a detection unit (600); the heating unit (500) is arranged in the detector shell (300), and the bottom of the detector shell (300) is of an open structure;

the detection unit (600) comprises a detection box (610) and a translation mechanism; the detection box (610) is installed at an opening at the bottom of the detector shell (300), a groove (620) is formed in the bottom of the detection box (610), the groove (620) is of a fan-shaped ring structure, and a plurality of groups of sliding grooves (621) are formed in the inner wall of the groove (620) at equal intervals; the translation mechanism is positioned in the detection box (610), a plurality of groups of sliding parts of the translation mechanism are respectively connected in the sliding grooves (621) in a sliding manner, the bottoms of the sliding parts of the translation mechanism penetrate through the outside of the detection box (610), and a group of ultrasonic probes (640) are respectively installed on the sliding parts; a group of coupling liquid brushing mechanisms (650) are fixedly arranged between every two adjacent groups of ultrasonic probes (640);

a plurality of groups of warm air ports (622) are evenly distributed on the inner wall of the groove (620).

2. A fetal heart detection apparatus as claimed in claim 1 wherein: translation mechanism includes servo motor (630) and lead screw (631), install servo motor (630) on a detection case (610) lateral wall, lead screw (631) are located in detection case (610), just lead screw (631) one end transmission is connected on servo motor (630)'s the output.

3. A fetal heart detection apparatus as claimed in claim 2 wherein: threaded connection has first slider (632) on lead screw (631), first slider (632) bottom fixed mounting has probe mounting panel (635), probe mounting panel (635) bottom equidistant arrangement has a plurality of groups connecting spring (633).

4. A fetal heart detection apparatus as claimed in claim 3 wherein: the bottom of the connecting spring (633) is fixedly provided with second sliding blocks (634), the number of the second sliding blocks (634) is the same as that of the ultrasonic probes (640) and the sliding chutes (621), and a plurality of groups of the second sliding blocks (634) are respectively connected to each group of the sliding chutes (621) in a sliding manner; and a plurality of groups of ultrasonic probes (640) are respectively arranged at the bottom of each group of second sliding blocks (634).

5. A fetal heart detection apparatus as claimed in claim 4 wherein: the coupling liquid painting mechanism (650) comprises a sponge chassis (651); the ultrasonic probe comprises a sponge bottom frame (651), wherein two ends of the sponge bottom frame (651) are respectively installed on a group of ultrasonic probes (640), a coupling liquid inlet (652) is formed in the top of the sponge bottom frame (651), a sponge mounting groove (653) is formed in the bottom of the sponge bottom frame (651), and sponge clamping grooves (654) are formed in two side walls of the sponge mounting groove (653).

6. The fetal heart detection apparatus of claim 5 wherein: the coupling liquid coating mechanism (650) further comprises a sponge mounting block (655) and a coating sponge body (657); the sponge mounting block (655) is movably mounted in the sponge mounting groove (653), and two groups of sponge clamping blocks (656) are symmetrically mounted on two side walls of the sponge mounting block (655); the two groups of sponge clamping blocks (656) can be respectively and movably clamped in the two groups of sponge clamping grooves (654); the brushing sponge body (657) is arranged at the bottom of the sponge mounting block (655), and the height of the bottom of the brushing sponge body (657) is lower than that of the ultrasonic probe (640).

7. The fetal heart detection apparatus of claim 6 wherein: and a coupling liquid outlet pipe (658) is arranged on the sponge mounting block (655), one end of the coupling liquid outlet pipe (658) is communicated with the coupling liquid inlet (652), and the other end of the coupling liquid outlet pipe is communicated with the brushing sponge body (657).

8. A fetal heart detection apparatus as claimed in claim 1 wherein: the heating unit (500) comprises an electric heater (510), a transmission pipe (520) and an air outlet main pipe (540); the electric heater (510) is fixedly installed in the detector shell (300), one end of the transmission pipe (520) is communicated with the output end of the electric heater (510), and the other end of the transmission pipe (520) penetrates into the detection box (610) and is communicated with the air outlet main pipe (540).

9. A fetal heart detection apparatus as claimed in claim 8 wherein: the bottom of the air outlet main pipe (540) is communicated with a plurality of groups of air outlet sub-pipes (550), the number of the air outlet sub-pipes (550) is the same as that of the hot air ports (622), and the other ends of the air outlet sub-pipes (550) are respectively communicated with the hot air ports (622).

10. A fetal heart detection apparatus as claimed in claim 9 wherein: a guide fan (530) is arranged at the joint of the transmission pipe (520) and the air outlet main pipe (540), an air inlet pipe (560) is communicated with the transmission pipe (520), and the other end of the air inlet pipe (560) penetrates to the outside of the detector shell (300).