Antenatal diagnosis and examination device

Abstract

The invention discloses an antenatal diagnosis and examination device, and relates to the technical field of antenatal diagnosis. Under the action of the puncture component, the puncture needle is driven to move and puncture into an amniotic cavity of a pregnant woman; through the operation of the driving mechanism, the hemisphere I and the hemisphere II are driven to synchronously and reversely rotate under the action of the two transmission mechanisms; under the action of the switching part, the two transmission mechanisms are driven to move relatively, so that the hemisphere I and the hemisphere II shake continuously; and along with the continuous operation of the switching part, the hemisphere I and the hemisphere II synchronously rotate in the same direction. According to the device, a mechanical puncture mode is achieved, amniotic fluid and non-liquid substances in the amniotic fluid can be collected, the situation that a puncture needle is blocked can be avoided, the purpose of scattering and conveying the non-liquid substances can be achieved through switching and matching of multiple movement modes, and the excellent intelligent effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of prenatal diagnostic technology, specifically to a prenatal diagnostic examination device. Background Technology

[0002] Prenatal diagnostic testing refers to the process of diagnosing the developmental status and disease conditions of a fetus before birth. It can diagnose diseases with abnormalities in the number or structure of chromosomes in the fetus, thereby allowing for priority implementation of corresponding measures.

[0003] The most common diagnostic method is amniocentesis, which involves inserting a needle into the amniotic cavity in the pregnant woman's abdomen to extract amniotic fluid. The condition of the fetus can then be diagnosed by examining and analyzing the amniotic fluid.

[0004] For example, Chinese Patent CN202210621086.4 discloses a prenatal diagnostic examination device for obstetrics and gynecology clinical use, including an auxiliary mechanism. The front end of the auxiliary mechanism is threadedly connected to a test tube, and a liquid inlet connector is fixedly installed at the tail end of the test tube. A liquid distribution ring cavity is fixedly opened inside the test tube, and the peripheral side of the liquid inlet connector communicates with the liquid distribution ring cavity. A set of liquid distribution holes arranged in a circumferential array and communicating with the liquid distribution ring cavity are opened on the end face of the test tube. A drive ring and a sampling tube are slidably connected sequentially from the inside to the outside of the inner wall of the test tube. A camera module is fixedly installed at the end of the sampling tube, and an inflation ring cavity with a tail-opening is fixedly opened inside the sampling tube. A variable-diameter ring bladder is installed on the peripheral side of the sampling tube, adjacent to the camera module. This application, through the arrangement of the test tube, sampling cotton ring, and variable-diameter ring bladder, enables this device to efficiently complete endoscopic examinations of the cervix or vagina and the sampling and testing of secretions in obstetrics and gynecology.

[0005] Based on existing technology, it is known that amniotic fluid may contain skin fragments shed from the fetus, urine, and exfoliated cells from the kidneys. Therefore, amniotic fluid may contain a certain amount of non-liquid substances, and examining these substances can help provide a reference for fetal diagnosis. However, existing amniocentesis needles are usually small in diameter to reduce injury and pain to the pregnant woman. The small diameter may lead to the needle being blocked by non-liquid substances, which may require the needle to be withdrawn and multiple amniotic fluid extractions to be performed, posing certain risks and making the procedure more complicated. Summary of the Invention

[0006] The purpose of this invention is to provide a prenatal diagnostic examination device that solves the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a prenatal diagnostic examination device, comprising:

[0008] case;

[0009] A puncture needle is positioned on the side of the housing.

[0010] The control panel is located on the front of the housing;

[0011] A connecting hose is fixedly connected to the end of the puncture needle, and a negative pressure collection bottle is connected to the end of the connecting hose. The negative pressure collection bottle can provide a negative pressure environment for the puncture needle after being operated by the control panel.

[0012] An ultrasonic detection probe is installed inside the housing;

[0013] The pulverizing ball is disposed inside the puncture needle, the diameter of the puncture needle is larger than the diameter of the pulverizing ball, and the pulverizing ball includes a first hemisphere and a second hemisphere, the first hemisphere and the second hemisphere being rotatably connected to each other on a fixed axis;

[0014] A puncture component is provided on the side of the housing;

[0015] The drive mechanism, two transmission mechanisms, and switching components are located on the side of the housing.

[0016] The puncture component moves the puncture needle to penetrate the amniotic cavity of the pregnant woman.

[0017] Through the operation of the drive mechanism, under the action of the two transmission mechanisms, the first hemisphere and the second hemisphere are driven to rotate synchronously in opposite directions.

[0018] The switching component drives the two transmission mechanisms to move relative to each other, causing hemisphere one and hemisphere two to vibrate continuously.

[0019] As the switching component continues to operate, hemisphere one and hemisphere two rotate synchronously in the same direction.

[0020] Optionally, the puncture component includes:

[0021] The movable shell has an opening on its upper surface for the puncture needle to pass through and be fixedly connected thereto. The side of the shell has a sliding groove for the movable shell to slide. A motor is fixedly connected to the upper surface of the shell. A screw is fixedly connected to the rotating part of the motor. An internal thread groove is provided on the outer surface of the movable shell for the screw to pass through and be threadedly connected thereto.

[0022] Optionally, the drive mechanism includes:

[0023] Motor 2, the outer shell of motor 2 is fixedly connected to the side of the movable shell, the rotating part of motor 2 is fixedly connected to rotating rod 1, the outer surface of rotating rod 1 is fixedly connected to gear 1, and two rotating rods 2 are rotatably connected to the inner wall of the movable shell. The outer surface of rotating rod 2 on one side is fixedly connected to gear 2, and the outer surface of rotating rod 2 on the other side is connected to the outer surface of rotating rod 1 through a belt pulley transmission mechanism.

[0024] Optionally, the transmission mechanism includes:

[0025] The spline shaft has its end fixedly connected to the end of the rotating rod 2. A sleeve is slidably sleeved on the outer surface of the spline shaft. A disc and a gear 3 are fixedly connected to the outer surface of the sleeve. An opening 2 is provided on the side of the puncture needle. A rotating shaft is rotatably connected to the opening wall of the opening 2. A gear 4 is fixedly connected to the outer surface of the rotating shaft. The device also includes a connecting component.

[0026] The thickness of the disk located on the left side of the movable shell is greater than the thickness of the disk located on the right side of the movable shell.

[0027] Optionally, the switching component includes:

[0028] The second motor has its outer shell fixedly connected to the inner wall of the movable shell. A hinge plate is fixedly connected to the rotating part of the second motor. Two deflection plates are hinged to the ends of the hinge plate, and a ring is hinged to the ends of the deflection plates. The inner side of the ring is rotatably connected to the outer surface of the sleeve. A connecting rod is fixedly connected to the lower surface of the sleeve, and a slider is fixedly connected to the end of the connecting rod. A groove for the slider to slide is provided on the inner wall of the movable shell, and a magnetic attraction component is also included.

[0029] Optionally, the connecting component includes:

[0030] Two rotating shafts are provided. The puncture needle has an installation cavity inside. The cavity wall of the installation cavity is rotatably connected to the end of the rotating shaft. The outer surface of the rotating shaft is connected to the outer surface of the rotating shaft through a belt pulley transmission mechanism. The two rotating shafts are fixedly connected to the interior of the first and second hemispheres, respectively. Cutting protrusions are fixedly connected to the outer surfaces of the first and second hemispheres.

[0031] Optionally, a handle is fixedly connected to the upper surface of the housing, and the outer surface of the handle is provided with anti-slip patterns.

[0032] Optionally, the magnetic attraction component includes:

[0033] Magnetic ring one and magnetic ring two, each hemisphere one and hemisphere two have cavities on opposite sides inside, magnetic ring one and magnetic ring two are respectively installed in the two cavities, and magnetic ring one and magnetic ring two are attracted to each other by magnetic attraction.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0035] I. This invention uses a puncture component to move the puncture needle into the amniotic cavity of the pregnant woman. The movement of this method is combined with ultrasound positioning, and the puncture depth is determined by threaded transmission. Therefore, doctors do not need to judge the puncture depth based on experience, which can avoid the situation of puncture being too deep or too low, and can facilitate precise operation by medical staff.

[0036] Second, the present invention drives the operation of the driving mechanism, which, under the action of two transmission mechanisms, drives hemisphere one and hemisphere two to rotate synchronously in opposite directions. This method adopts a crushing method, and a reciprocatingly rotating crushing ball is set at the end of the puncture needle to cut and disperse impurities of a certain size, so as to accelerate the rapid collection of amniotic fluid without blocking the puncture needle.

[0037] Third, this invention, through the action of the switching component, drives two transmission mechanisms to move relative to each other, causing hemisphere one and hemisphere two to vibrate continuously, thus achieving:

[0038] First: When it is necessary to collect non-liquid impurities in the amniotic fluid, the synchronous counter-rotation of hemisphere one and hemisphere two, under the action of the cutting protrusions, can cut large non-liquid impurities, thereby avoiding the situation where impurities block the inside of the puncture needle, which helps to collect amniotic fluid and non-liquid impurities in the amniotic fluid, thus facilitating the subsequent prenatal diagnosis and examination of pregnant women by medical staff.

[0039] Second: Impurities and shredded impurities may adhere to the pulverizing ball. In order to avoid the accumulation of a certain amount of impurities on the pulverizing ball and affecting the normal extraction of amniotic fluid, the pulverizing ball is shaken rapidly in the axial direction after the impurities are pulverized. This can shake off the impurities to a certain extent, thus ensuring the normal use of this puncture needle.

[0040] Third: In order to ensure the normal feeding of impurities, the axial rotation of hemisphere one and hemisphere two is synchronized. This method enables the crushing ball to play a conveying role, so as to ensure the normal feeding of non-liquid impurities under the premise of ensuring the normal feeding of the puncture needle. Attached Figure Description

[0041] Figure 1 This is a front view of the structure of the present invention;

[0042] Figure 2 This is an isometric view of the structure of the present invention;

[0043] Figure 3 This is a cross-sectional view of the structure at the movable shell of the present invention;

[0044] Figure 4 This is a schematic diagram of the four-position structure of the gear of the present invention;

[0045] Figure 5 This is a schematic diagram of the structure at the hinge plate of the present invention;

[0046] Figure 6 This is a schematic diagram of the structure of the crushing ball in this invention;

[0047] Figure 7 This is an isometric view of the structure at the cut protrusion of the present invention.

[0048] In the diagram: 1. Shell; 2. Puncture needle; 3. Negative pressure collection bottle; 4. Connecting hose; 5. Control panel; 6. Ultrasonic detection probe; 7. Crushing ball; 8. Hemisphere 1; 9. Hemisphere 2; 10. Moving shell; 11. Motor 1; 12. Screw 1; 13. Motor 2; 14. Rotating rod 1; 15. Gear 1; 16. Rotating rod 2; 17. Gear 2; 18. Belt pulley transmission mechanism 1; 19. Splined shaft; 20. Sleeve; 21. Disc; 22. Gear 3; 23. Rotating shaft; 24. Gear 4; 25. Ring body; 26. Connecting rod; 27. Slider; 28. Rotating shaft 1; 29. ​​Belt pulley transmission mechanism 2; 30. Cutting protrusion; 31. Magnetic ring 1; 32. Handle; 33. Magnetic ring 2; 34. Motor 2; 35. Hinge plate; 36. Deflection plate; 37. Mounting cavity. Detailed Implementation

[0049] Example 1:

[0050] Please see Figures 1 to 7 This embodiment provides a technical solution: a prenatal diagnostic examination device, including: a shell 1, a puncture needle 2, a negative pressure collection bottle 3, a connecting hose 4, a control board 5, an ultrasonic detection probe 6, a pulverizing ball 7, a hemisphere one 8, a hemisphere two 9, and a puncture component.

[0051] More specifically, in this embodiment: during use, the user moves the housing 1 over the pregnant woman's abdomen, and the specific position of the fetus is determined by the ultrasound detection probe 6. Then, the control board 5 operates the puncture component. The puncture component adopts a mechanical propulsion method, which can insert the puncture needle 2 into the pregnant woman's abdomen and into the amniotic fluid area. Under the action of the negative pressure collection bottle 3, the amniotic fluid and non-liquid substances inside the amniotic fluid are extracted and stored in the negative pressure collection bottle 3 for medical personnel to perform fetal diagnosis and testing.

[0052] It is worth noting that this embodiment also includes: a drive mechanism, two transmission mechanisms, and a switching component.

[0053] More specifically, in this embodiment: to avoid blockage of the puncture needle 2, the control board 5 will operate the drive mechanism, and the two transmission mechanisms will operate synchronously in opposite directions, thereby driving hemisphere 1 8 and hemisphere 2 9 to rotate synchronously in opposite directions, breaking up non-liquid substances. Then, the switching component will operate in time to vibrate the substances remaining on the crushing ball 7 to prevent accumulation. Finally, the switching component will make hemisphere 1 8 and hemisphere 2 9 rotate synchronously in the same direction, thereby feeding amniotic fluid and non-liquid substances inside the amniotic fluid. This method can feed and cut substances, and has the effect of collecting, crushing and unblocking the crushed materials.

[0054] It is worth noting that in this embodiment, a handle 32 is fixedly connected to the upper surface of the housing 1, and the outer surface of the handle 32 is provided with anti-slip patterns.

[0055] More specifically, in this embodiment: the handle 32 facilitates the user's manipulation of the housing 1, thereby increasing the contact area between the housing 1 and the hand, and the anti-slip pattern increases the contact friction between the handle 32 and the user's palm, thus preventing the hand from slipping out of the hand.

[0056] Example 2:

[0057] Based on the above embodiments:

[0058] Please see Figure 1 , Figure 2 and Figure 3 The puncture component in Embodiment 1 is disclosed as follows: the puncture component includes:

[0059] The movable shell 10 has an opening on its upper surface for the puncture needle 2 to pass through and be fixedly connected thereto. The side of the shell 1 has a sliding groove for the movable shell 10 to slide. A motor 11 is fixedly connected to the upper surface of the shell 1. A screw 12 is fixedly connected to the rotating part of the motor 11. An internal thread groove is provided on the outer surface of the movable shell 10 for the screw 12 to pass through and be threadedly connected thereto.

[0060] More specifically, in this embodiment: In actual use, the user places the housing 1 on the pregnant woman's abdomen. The ultrasound detection probe 6 will detect the fetus's condition in a timely manner and upload the data to the external display terminal. The doctor performs puncture according to the fetus's position. During puncture, the control board will operate the motor 11 to rotate, and the rotating part of the motor 11 will drive the screw 12 to rotate. Under the thread transmission and the sliding restriction of the slide groove, the moving housing 10 will move vertically, thereby driving the puncture needle 2 to puncture the fetus of the pregnant woman to achieve the purpose of collecting amniotic fluid. The negative pressure collection bottle 3 will be started under the operation of the control board 5 to extract the amniotic fluid into the bottle.

[0061] This method combines ultrasound positioning with threaded transmission, eliminating the need for doctors to judge the puncture depth based on experience. This avoids situations where the puncture is too deep or too shallow, and allows medical staff to perform precise operations.

[0062] Example 3:

[0063] Based on the above embodiments:

[0064] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The driving mechanism in Embodiment 1 is disclosed as follows: The driving mechanism includes:

[0065] Motor 2 13, the outer shell of motor 2 13 is fixedly connected to the side of the movable shell 10, the rotating part of motor 2 13 is fixedly connected to rotating rod 14, gear 15 is fixedly connected to the outer surface of rotating rod 14, two rotating rods 2 16 are fixedly connected to the inner wall of the movable shell 10, gear 2 17 is fixedly connected to the outer surface of rotating rod 2 16 on one side, and the outer surface of rotating rod 2 16 on the other side is connected to the outer surface of rotating rod 14 through belt pulley transmission mechanism 18.

[0066] More specifically, in this embodiment: during use, the control board will operate the motor 2 13 to operate, the rotating part of the motor 2 13 will drive the rotating rod 14 to rotate, the rotating rod 14 will drive the gear 15 and the belt pulley transmission mechanism 18 to rotate, under meshing transmission, the gear 2 17 and the left rotating rod 2 16 will rotate in reverse, while the right rotating rod 2 16 will rotate forward under belt transmission, thus enabling the two rotating rods 2 16 to rotate synchronously in opposite directions.

[0067] Example 4

[0068] Based on the above embodiments:

[0069] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The transmission mechanism in Embodiment 1 is disclosed as follows: The transmission mechanism includes:

[0070] Spline shaft 19, the end of spline shaft 19 is fixedly connected to the end of rotating rod 2 16, sleeve 20 is slidably sleeved on the outer surface of spline shaft 19, disc 21 and gear 3 22 are fixedly connected on the outer surface of sleeve 20, opening 2 is provided on the side of puncture needle 2, rotating shaft 23 is fixedly connected to the opening wall of opening 2, and gear 4 24 is fixedly connected on the outer surface of rotating shaft 23.

[0071] The thickness of the disk 21 located on the left side of the movable shell 10 is greater than the thickness of the disk 21 located on the right side of the movable shell 10.

[0072] The puncture needle 2 has an installation cavity 37 inside. The cavity wall of the installation cavity 37 is rotatably connected to the end of the rotating shaft 28. The outer surface of the rotating shaft 28 is connected to the outer surface of the rotating shaft 23 through a belt pulley transmission mechanism 29. The two rotating shafts 28 are fixedly connected to the interior of the hemisphere 8 and the second hemisphere 9 respectively. Cutting protrusions 30 are fixedly connected to the outer surfaces of the hemisphere 8 and the second hemisphere 9.

[0073] More specifically, in this embodiment: during use, the rotation of the rotating rod 16 drives the spline shaft 19 and the sleeve 20 to rotate, which in turn causes the gear 24 and the rotating shaft 23 to rotate. Under the action of the belt pulley transmission mechanism 29 and the drive mechanism, the rotating shaft 28 on one side and the rotating shaft 28 on the other side rotate synchronously in opposite directions, which in turn causes the hemisphere 8 and the hemisphere 9 to rotate synchronously in opposite directions, and the non-liquid impurities in the amniotic fluid are broken up by the cutting protrusions 30 on the crushing ball 7.

[0074] When performing prenatal diagnostic tests on pregnant women, it is usually necessary to extract amniotic fluid for testing. The extraction method is usually amniocentesis. The amniotic fluid may contain non-liquid substances such as skin fragments shed by the fetus. These substances can help medical staff in subsequent diagnosis and monitoring. Since the puncture needle 2 is usually small, in order to avoid such non-liquid substances from clogging the inside of the puncture needle 2, this method uses a crushing method. A reciprocating rotating crushing ball 7 is set at the end of the puncture needle 2 to cut and disperse impurities of a certain size, so as to accelerate the collection of amniotic fluid without clogging the puncture needle 2.

[0075] Example 5

[0076] Based on the above embodiments:

[0077] Please see Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The switching component in Embodiment 1 is disclosed as follows: the switching component includes:

[0078] Motor 2 34, the outer shell of motor 2 34 is fixedly connected to the inner wall of movable shell 10, the rotating part of motor 2 34 is fixedly connected to hinge plate 35, the end of hinge plate 35 is hinged to two deflection plates 36, the end of deflection plate 36 is hinged to ring body 25, the inner side of ring body 25 is fixedly rotatably connected to the outer surface of sleeve 20, the lower surface of sleeve 20 is fixedly connected to connecting rod 26, the end of connecting rod 26 is fixedly connected to slider 27, and the inner wall of movable shell 10 is provided with groove for slider 27 to slide.

[0079] Both hemisphere 8 and hemisphere 9 have cavities on opposite sides inside. Magnetic ring 31 and magnetic ring 33 are installed in the two cavities respectively, and magnetic ring 31 and magnetic ring 33 are attracted to each other magnetically.

[0080] More specifically, in this embodiment: during use, when it is necessary to change the motion state of the crushing ball 7, the control board 5 will operate the rotating part of the motor 2 34, thereby driving the hinge plate 35 to deflect. Under the sliding restriction of the hinge connection, connecting rod 26 and slider 27, the two rings 25 and the two sleeves 20 will move synchronously and approach each other, so that the gear 4 24 can respectively drive the gear 3 22 and the disk 21 in a positive direction. When the gear 4 24 and the gear 3 22 are meshed in a positive direction, the hemisphere 1 8 will rotate in the forward direction. However, due to the action of the drive mechanism, the transmission directions of the left and right transmission mechanisms are opposite, so the hemisphere 2 9 rotates in the reverse direction. When gear 24 and disk 21 are in direct transmission, as disk 21 rotates, the side of disk 21 rubs against and restricts the rotation of gear 24, allowing gear 24 to swing rapidly. This causes hemisphere 8 and hemisphere 9 to swing synchronously in opposite directions. As the switching component operates again, the thicker disk 21 and gear 24 maintain transmission, while the thinner disk 21 and gear 24 are no longer in direct transmission, thus disengaging from transmission. This causes hemisphere 8 to rotate, while hemisphere 9, lacking power transmission, will rotate synchronously with hemisphere 8 under magnetic attraction.

[0081] Firstly, when it is necessary to collect non-liquid impurities in the amniotic fluid, in order to avoid clogging the puncture needle 2, the synchronous reverse rotation of hemisphere 1 8 and hemisphere 2 9, under the action of the cutting protrusion 30, can cut large-sized non-liquid impurities, thereby avoiding the situation where impurities clog the inside of the puncture needle 2, which helps to collect amniotic fluid and non-liquid impurities in the amniotic fluid, and thus facilitates the subsequent prenatal diagnosis and examination of pregnant women by medical staff.

[0082] Secondly, some impurities, including those chopped and broken up, may adhere to the pulverizing ball 7. To avoid the accumulation of a certain amount of impurities on the pulverizing ball 7 and thus affecting the normal extraction of amniotic fluid, the pulverizing ball 7 is rapidly shaken axially after the impurities are pulverized. This shakes off the impurities to a certain extent, ensuring the normal use of the puncture needle 2.

[0083] Thirdly, in order to ensure the normal feeding of impurities, hemisphere 8 and hemisphere 9 rotate axially synchronously, thereby enabling the rapid transport of the shredded impurities. Because some of the large-sized impurities may have been transported into the negative pressure collection bottle 3 when they are cut, but some residue may be blocked by the crushing ball 7, this method enables the crushing ball 7 to play a connecting and transporting role, so as to ensure that the puncture needle 2 is less blocked, and that non-liquid impurities are transported normally and quickly.

[0084] Working principle: The prenatal diagnostic testing device is used in the following steps:

[0085] S1: The user makes the pregnant woman lie flat, then applies medicine to the pregnant woman's abdomen for local anesthesia, and then the user moves the shell 1 and uses the ultrasound detection probe 6 on it to determine the position of the fetus.

[0086] S2: The user then operates on the control panel 5. The control panel 5 will promptly manipulate the puncture component to advance towards the pregnant woman's abdomen, so that the puncture needle 2 is inserted into the amniotic fluid area and, under the action of the negative pressure collection bottle 3, the amniotic fluid is drawn into the negative pressure collection bottle 3 for diagnosis and examination.

[0087] S3: The control board 5 will then operate the drive mechanism, which will cause the two transmission mechanisms to rotate synchronously in opposite directions, thereby causing the two parts of the crushing ball 7 inside the puncture needle 2 and located in the puncture end area to rotate synchronously in opposite directions, breaking up the non-liquid substances in the amniotic fluid.

[0088] S4: The switching component will then operate, causing the crushing ball 7 to vibrate axially, and then finally causing the crushing ball 7 to rotate axially on the same side, thereby conveying and feeding the broken-up non-liquid material to achieve the effect of synchronous collection of amniotic fluid and the material in the amniotic fluid.

[0089] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prenatal diagnostic testing device, characterized in that: include: Shell (1); A puncture needle (2) is provided on the side of the housing (1), and a control plate (5) is provided on the front of the housing (1); A connecting hose (4) is fixedly connected to the end of the puncture needle (2), and the end of the connecting hose (4) is connected to a negative pressure collection bottle (3). The negative pressure collection bottle (3) can provide a negative pressure environment for the puncture needle (2) after being operated by the control panel (5).

2. The prenatal diagnostic examination device according to claim 1, characterized in that: Also includes: An ultrasonic detection probe (6) is installed inside the housing (1); The pulverizing ball (7) is disposed inside the puncture needle (2). The diameter of the puncture needle (2) is larger than the diameter of the pulverizing ball (7). The pulverizing ball (7) includes a first hemisphere (8) and a second hemisphere (9). The first hemisphere (8) and the second hemisphere (9) are rotatably connected to each other on a fixed axis. The puncture component, drive mechanism, two transmission mechanisms, and switching component are disposed on the side of the housing (1).

3. The prenatal diagnostic examination device according to claim 2, characterized in that: Under the action of the puncture component, the puncture needle (2) is moved to puncture into the amniotic cavity of the pregnant woman; Through the operation of the drive mechanism, under the action of the two transmission mechanisms, the first hemisphere (8) and the second hemisphere (9) are driven to rotate synchronously in opposite directions; The switching component drives the two transmission mechanisms to move relative to each other, causing the first hemisphere (8) and the second hemisphere (9) to vibrate continuously. As the switching component continues to operate, hemisphere one (8) and hemisphere two (9) rotate synchronously in the same direction.

4. The prenatal diagnostic examination device according to claim 3, characterized in that: The puncture component includes: A movable shell (10) has an opening on its upper surface for the puncture needle (2) to pass through and be fixedly connected thereto. A sliding groove is provided on the side of the shell (1) for the movable shell (10) to slide. A motor (11) is fixedly connected to the upper surface of the shell (1). A screw (12) is fixedly connected to the rotating part of the motor (11). An internal thread groove is provided on the outer surface of the movable shell (10) for the screw (12) to pass through and be threadedly connected thereto. The drive mechanism includes: Motor 2 (13), the outer shell of motor 2 (13) is fixedly connected to the side of the movable shell (10), the rotating part of motor 2 (13) is fixedly connected to rotating rod 1 (14), the outer surface of rotating rod 1 (14) is fixedly connected to gear 1 (15), the inner wall of the movable shell (10) is rotatably connected to two rotating rods 2 (16), the outer surface of rotating rod 2 (16) on one side is fixedly connected to gear 2 (17), the outer surface of rotating rod 2 (16) on the other side is connected to the outer surface of rotating rod 1 (14) through belt pulley transmission mechanism 1 (18); The transmission mechanism includes: A spline shaft (19) is provided, the end of which is fixedly connected to the end of the rotating rod (16). A sleeve (20) is slidably sleeved on the outer surface of the spline shaft (19). A disc (21) and a gear (22) are fixedly connected on the outer surface of the sleeve (20). An opening (2) is provided on the side of the puncture needle (2). A rotating shaft (23) is fixedly rotatably connected to the opening wall of the opening (2). A gear (24) is fixedly connected on the outer surface of the rotating shaft (23). The device also includes a connecting component. The thickness of the disk (21) located on the left side of the movable shell (10) is greater than the thickness of the disk (21) located on the right side of the movable shell (10); The switching component includes: The second motor (34) has its outer shell fixedly connected to the inner wall of the movable shell (10). The rotating part of the second motor (34) is fixedly connected to a hinge plate (35). Two deflection plates (36) are hinged to the end of the hinge plate (35). A ring (25) is hinged to the end of the deflection plate (36). The inner side of the ring (25) is rotatably connected to the outer surface of the sleeve (20) on a fixed axis. A connecting rod (26) is fixedly connected to the lower surface of the sleeve (20). A slider (27) is fixedly connected to the end of the connecting rod (26). A groove for the slider (27) to slide is opened on the inner wall of the movable shell (10). A magnetic suction component is also included.

5. The prenatal diagnostic examination device according to claim 4, characterized in that: The connecting component includes two rotating shafts (28). The puncture needle (2) has an installation cavity (37) inside. The cavity wall of the installation cavity (37) is rotatably connected to the end of the rotating shaft (28) at a fixed axis. The outer surface of the rotating shaft (28) and the outer surface of the rotating shaft (23) are connected by a belt pulley transmission mechanism (29).

6. The prenatal diagnostic examination device according to claim 5, characterized in that: The two rotating shafts (28) are fixedly connected to the interior of the first hemisphere (8) and the second hemisphere (9), respectively, and cutting protrusions (30) are fixedly connected to the outer surfaces of the first hemisphere (8) and the second hemisphere (9).

7. The prenatal diagnostic examination device according to claim 3, characterized in that: A handle (32) is fixedly connected to the upper surface of the housing (1), and the outer surface of the handle (32) is provided with anti-slip patterns.

8. The prenatal diagnostic examination device according to claim 5, characterized in that: The magnetic attraction component includes: Magnetic ring one (31) and magnetic ring two (33), the inner opposite sides of hemisphere one (8) and hemisphere two (9) are provided with cavities, the magnetic ring one (31) and the magnetic ring two (33) are respectively installed in the two cavities, and the magnetic ring one (31) and the magnetic ring two (33) are magnetically attracted to each other.

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