Anti-blocking amniotic fluid sampler for obstetrics and gynecology department

Abstract

The invention discloses an anti-clogging amniotic fluid sampler for the obstetrics and gynecology department, and relates to the technical field of amniotic fluid sampling, the anti-clogging amniotic fluid sampler comprises an injector mechanism for sucking amniotic fluid and a fluid storage cylinder; a liquid storage cavity used for storing amniotic fluid is formed in the liquid storage cylinder, a first port is formed in the liquid storage cylinder and communicated with the suction end of the injector mechanism, a second port is further formed in the bottom of the liquid storage cylinder, the other end of the second port is communicated with the liquid inlet pipe, the liquid inlet pipe is connected with the puncture needle head, and a plug plate is arranged in the liquid storage cavity in a sliding mode. A plurality of sets of through holes are formed in the top wall of the liquid storage cylinder in the circumferential direction, sealing rods rotationally connected with the plug plate are arranged in the through holes in a sliding mode, and through holes are formed in the sealing rods; a bearing hole is formed in the position, close to the plug plate, of the sealing rod. A plurality of infusion channels are formed in the cylinder wall of the liquid storage cylinder in a circumferential array mode, one end of each infusion channel communicates with the liquid inlet pipe, and the other end of each infusion channel penetrates through the through hole to communicate with the first port; in the sampling process, the injector does not need to be replaced, so that the efficiency is higher.

Description

Technical Field

[0001] The invention relates to the technical field of amniotic fluid sampling, and in particular to an anti-blocking amniotic fluid sampler for obstetrics and gynecology. Background Art

[0002] Amniotic fluid examination is usually performed between 16 and 20 weeks of pregnancy. Amniotic fluid is collected for examination through amniocentesis. Examination items include cell culture, sex chromosome identification, chromosome karyotype analysis, amniotic fluid alpha-fetoprotein measurement, amniotic fluid biochemical examination, etc., to determine the maturity and health of the fetus, and to diagnose whether the fetus is normal or has certain genetic diseases. Amniocentesis requires the use of a puncture needle to take amniotic fluid samples.

[0003] When sampling, the initial extraction is performed first: 2ml of amniotic fluid is extracted with a 2ml syringe and discarded, because this section of amniotic fluid may contain maternal cells and is not suitable for subsequent testing; secondly, the formal extraction is performed: 20ml of amniotic fluid is extracted with a 20ml empty needle, and the two are placed in two sterile test tubes and sealed with a cap; the amount of amniotic fluid extracted is usually determined according to the specific purpose of the examination; it can be seen that during the extraction process, medical staff need to replace the syringe, which is cumbersome. Summary of the invention

[0004] The purpose of the present invention is to provide an anti-blocking gynecological amniotic fluid sampler to solve the following technical problems:

[0005] During the sample extraction process, the syringe needs to be replaced, which is a cumbersome operation.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] An anti-clogging amniotic fluid sampler for obstetrics and gynecology, comprising a syringe mechanism and a liquid storage cylinder for drawing amniotic fluid;

[0008] The liquid storage cylinder is provided with a liquid storage cavity for storing amniotic fluid, a first port is provided on the liquid storage cylinder, the first port is communicated with the suction end of the syringe mechanism, a second port is also provided at the bottom of the liquid storage cylinder, the other end of the second port is communicated with the liquid inlet tube, the liquid inlet tube is connected with the puncture needle, a plug plate is slidably arranged in the liquid storage cavity, a plurality of groups of through holes are circumferentially provided on the top wall of the liquid storage cylinder, a sealing rod rotatably connected with the plug plate is slidably arranged in the through hole, and a through hole is provided on the sealing rod;

[0009] A receiving hole is provided on the sealing rod close to the plug plate; a plurality of groups of infusion channels are provided on the wall of the liquid storage cylinder in a circumferential array, one end of the infusion channel is connected to the liquid inlet pipe, and the other end passes through the through hole and is connected to the first port;

[0010] It also includes a rotating module arranged on the liquid storage cylinder, and the rotating module is used for synchronously driving each sealing rod to rotate.

[0011] Preferably, a cartridge is fixedly arranged on the puncture needle, and the liquid inlet tube is plug-connected and connected to the cartridge.

[0012] Preferably, the syringe mechanism comprises a barrel, the suction end comprises a suction tube fixedly arranged at the bottom of the barrel, the suction tube is communicated with the inner cavity of the barrel, a piston is slidably arranged in the barrel, and the piston is fixed to a plug rod slidably arranged in the barrel;

[0013] Wherein, a handle is fixedly arranged on the end of the plug rod away from the piston, and a support ear is fixedly arranged on the cylinder body.

[0014] Preferably, a limiting rod is fixedly arranged at one end of the plug plate close to the liquid inlet pipe, and the limiting rod passes through the second port and is fixed to the sealing disk;

[0015] Wherein, the diameter of the limiting rod is smaller than the diameter of the second port, and the diameter of the sealing disk is larger than the diameter of the second port and smaller than the inner diameter of the liquid inlet pipe.

[0016] Preferably, the rotating module includes a gear fixedly arranged on the top of each sealing rod, wherein a driving ring is rotatably arranged on the liquid storage cylinder, and a plurality of groups of arc-shaped racks for meshing with the gears are fixedly arranged in a circumferential array on the inner surface of the driving ring, and the driving ring is connected to a driving part that drives it to rotate.

[0017] Preferably, the driving part comprises a positioning rod fixedly arranged on the liquid storage cylinder, and the top end of the positioning rod is fixed to the arc-shaped positioning plate;

[0018] Among them, an annular slide rail is fixedly arranged on the outer edge surface of the driving ring, and an arc-shaped slide groove slidably connected to the annular slide rail is opened on the inner edge surface of the arc-shaped positioning plate; a pull ring is fixedly arranged on the outer edge surface of the annular slide rail.

[0019] Preferably, a conical pointer is fixedly arranged on each of the gears, and when the receiving hole and the infusion channel are in a dislocated closed state, the conical end of the conical pointer points perpendicular to the axis of the liquid storage cylinder.

[0020] Preferably, the liquid storage cylinder is fixed to one side of the scanning probe through a connecting plate.

[0021] Preferably, a mounting bracket is fixed on the scanning probe, a screw is rotatably arranged on one side of the mounting bracket, the two sides of the screw rotate in opposite directions, a first nut and a second nut are symmetrically spirally sleeved on the screw, the first nut is connected to the first positioning part, the first positioning part is used to position and fix the cylinder, the second nut is connected to the second positioning part, the second positioning part is used to position and fix the puncture needle.

[0022] Preferably, the first positioning portion comprises a positioning plate fixed to the first nut, and U-shaped plates clamped to the support ears are respectively fixedly arranged on both sides of the positioning plate;

[0023] Among them, an arc-shaped limit plate engaged with the cylinder is fixedly arranged at the bottom of the positioning plate, and the second positioning part includes a driving rod fixed to the second nut. The driving rod slides through the connecting plate and is fixed to the limit plate. A positioning disk is fixed at the end of the limit plate. A positioning groove for embedding the cartridge is opened on the positioning disk, and a circular groove is opened at the bottom of the positioning groove.

[0024] Beneficial effects of the present invention:

[0025] (1) When sampling and testing amniotic fluid, the present invention first connects the puncture needle with the liquid inlet tube, and then connects the first port with the suction end of the syringe mechanism. At this time, the plug plate is at the bottom of the liquid storage chamber. When extracting amniotic fluid, the medical staff inserts the puncture needle into the corresponding sampling position, and a negative pressure is generated by the syringe mechanism. Under the suction effect of the negative pressure, the plug plate can slide upward in the liquid storage chamber, thereby generating a negative pressure in the space at the bottom of the plug plate. The amniotic fluid can be sucked into the liquid storage chamber through the puncture needle, the liquid inlet tube and the second port in sequence. When the plug plate rises to the limit position, the amount of amniotic fluid sucked into the liquid storage chamber just reaches 2 ml;

[0026] (2) In the present invention, when the plug plate rises to the limit position, the rotating module synchronously drives each sealing rod to rotate 90 degrees synchronously, so that the receiving holes on each sealing rod and the infusion channel are in a state of interconnection. At this time, as the medical staff adjusts the syringe mechanism to continue to generate negative pressure, the sampling liquid in the infusion channel can pass through the receiving hole and the first port and be sucked into the syringe mechanism to achieve the effect of sampling and collection; in the sampling process of the present invention, there is no need to replace the syringe, which is more efficient;

[0027] (3) In the present invention, since multiple groups of infusion channels are arranged, when any one or two groups of infusion channels are blocked, the remaining infusion channels can still be sampled normally. Compared with the prior art that uses only one group of channels, the present invention can effectively improve the anti-blockage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 It is a three-dimensional structural schematic diagram of an anti-clogging amniotic fluid sampler for obstetrics and gynecology of the present invention;

[0030] Figure 2 It is a schematic diagram of the main structure of an anti-clogging amniotic fluid sampler for obstetrics and gynecology of the present invention;

[0031] Figure 3 It is a three-dimensional structural schematic diagram of a syringe mechanism in an anti-clogging amniotic fluid sampler for obstetrics and gynecology of the present invention;

[0032] Figure 4It is a schematic structural diagram of a cutaway syringe mechanism in an anti-clogging amniotic fluid sampler for obstetrics and gynecology of the present invention;

[0033] Figure 5 It is a three-dimensional structural schematic diagram of a liquid storage cylinder in an anti-clogging amniotic fluid sampler for obstetrics and gynecology of the present invention;

[0034] Figure 6 It is a schematic structural diagram of a cutaway liquid storage cylinder in an anti-clogging amniotic fluid sampler for obstetrics and gynecology of the present invention;

[0035] Figure 7 The present invention is a schematic structural diagram of a positioning disk in an anti-clogging amniotic fluid sampler for obstetrics and gynecology.

[0036] In the figure: 1, syringe mechanism; 2, scanning probe; 3, mounting frame; 4, second nut; 5, liquid storage cylinder; 6, puncture needle; 101, cylinder body; 102, lug; 103, plug rod; 104, handle; 105, piston; 106, suction tube; 301, screw; 302, first nut; 303, positioning plate; 304, U-shaped plate; 305, arc-shaped limit plate; 401, driving rod; 402, connecting plate; 403, limit plate; 404, positioning plate; 405, positioning groove; 406, circular groove; 501, liquid inlet pipe; 502, drive ring; 503, annular slide rail; 504, arc-shaped positioning plate; 505, positioning rod; 506, first port; 507, gear; 508, conical pointer; 509, pull ring; 601, arc-shaped rack; 602, sealing rod; 603, through hole; 604, liquid storage chamber; 605, plug plate; 606, infusion channel; 607, limit rod; 608, sealing disk; 609, second port; 610, receiving hole; 611, cartridge. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1

[0039] See also Figure 1 As shown, the present invention is an anti-clogging gynecological and obstetric amniotic fluid sampler, including a syringe mechanism 1 for drawing amniotic fluid and a liquid storage cylinder 5; specifically, the syringe mechanism 1 of this embodiment is an existing conventional syringe, and its specific model is not limited, so as to meet the actual sampling needs.

[0040] In this embodiment, please refer to Figure 5-Figure 6A liquid storage chamber 604 for storing 2 ml of amniotic fluid is provided in the liquid storage cylinder 5, a first port 506 connected to the liquid storage chamber 604 is provided on the liquid storage cylinder 5, the first port 506 is connected to the suction end of the syringe mechanism 1, a second port 609 connected to the liquid storage chamber 604 is also provided at the bottom of the liquid storage cylinder 5, the other end of the second port 609 is connected to the liquid inlet tube 501, the liquid inlet tube 501 is used to connect with the puncture needle 6, a plug plate 605 is slidably arranged in the liquid storage chamber 604, wherein a plurality of groups of through holes 603 are circumferentially provided on the top wall of the liquid storage cylinder 5, a sealing rod 602 rotatably connected to the plug plate 605 is slidably arranged in the through hole 603, and a through hole 603 is provided on the sealing rod 602;

[0041] As a further solution of this embodiment, a receiving hole 610 is provided on the sealing rod 602 close to the plug plate 605;

[0042] Also, see Figure 4 In order to facilitate the connection between the puncture needle 6 and the liquid inlet tube 501, in this embodiment, a cartridge 611 is fixedly arranged on the puncture needle 6, and the liquid inlet tube 501 is connected with the cartridge 611 by plugging; specifically, in this embodiment, when connecting the puncture needle 6, the puncture needle 6 and the cartridge 611 can be directly plugged, and the sampling liquid can enter the liquid inlet tube 501 through the puncture needle 6 and the cartridge 611 in turn.

[0043] It should be noted that when sampling and testing the amniotic fluid, the puncture needle 6 is first connected to the liquid inlet tube 501, and then the first port 506 is connected to the suction end of the syringe mechanism 1. At this time, the plug plate 605 is at the bottom of the liquid storage chamber 604. When the medical staff extracts the amniotic fluid, they insert the puncture needle 6 into the corresponding sampling position, and a negative pressure is generated through the syringe mechanism 1. Under the suction of the negative pressure, the plug plate 605 can slide upward in the liquid storage chamber 604, thereby causing a negative pressure to be generated in the space at the bottom of the plug plate 605. The amniotic fluid can be sucked into the liquid storage chamber 604 through the puncture needle 6, the liquid inlet tube 501 and the second port 609 in turn. When the plug plate 605 rises to the limit position, the amount of amniotic fluid sucked into the liquid storage chamber 604 just reaches 2 ml.

[0044] Furthermore, a plurality of groups of infusion channels 606 are provided in a circumferential array on the wall of the liquid storage cylinder 5, one end of the infusion channel 606 is connected to the liquid inlet tube 501, and the other end is connected to the first port 506 through the through hole 603; in the present embodiment, when the plug plate 605 rises in the liquid storage cavity 604, the sealing rod 602 can be synchronously driven to rise synchronously, and the diameter of the sealing rod 602 is larger than the inner diameter of the infusion channel 606, so at this time the sealing rod 602 can seal the infusion channel 606, and the sampled liquid will not be transported along the infusion channel 606.

[0045] Correspondingly, when the plug plate 605 rises to the limit position, the receiving hole 610 and the infusion channel 606 are also in a vertical misalignment state, and the sampled liquid cannot pass through the receiving hole 610 either.

[0046] It also includes a rotating module arranged on the liquid storage cylinder 5, and the rotating module is used to synchronously drive each sealing rod 602 to rotate; it can be explained that when the plug plate 605 rises to the limit position, the rotating module synchronously drives each sealing rod 602 to rotate 90 degrees synchronously, so that the receiving hole 610 on each sealing rod 602 and the infusion channel 606 are in a state of mutual communication. At this time, as the medical staff adjusts the syringe mechanism 1 to continue to generate negative pressure, the sampling liquid in the infusion channel 606 can be sucked into the syringe mechanism 1 through the receiving hole 610 and the first port 506 to achieve the effect of sampling and collection; in the sampling process of this embodiment, there is no need to replace the syringe, and the efficiency is higher.

[0047] In this embodiment, since multiple groups of infusion channels 606 are arranged, when any one or two groups of infusion channels 606 are blocked, the remaining infusion channels 606 can still be sampled normally. Compared with the prior art that uses one group of channels, this embodiment can effectively improve the anti-blockage effect.

[0048] Example 2

[0049] Based on Example 1, please refer to Figure 2-Figure 4 The syringe mechanism 1 includes a barrel 101, and the suction end includes a suction tube 106 fixedly arranged at the bottom of the barrel 101, the suction tube 106 is connected to the inner cavity of the barrel 101, a piston 105 is slidably arranged in the barrel 101, and the piston 105 is fixed to a plug rod 103 slidably arranged in the barrel 101, wherein a handle 104 is fixedly arranged at one end of the plug rod 103 away from the piston 105, and a support ear 102 is fixedly arranged on the barrel 101; specifically, the suction tube 106 of this embodiment achieves the effect of extracting liquid by plugging and cooperating with the first port 506. When extracting liquid, the medical staff pulls the plug rod 103 through the handle 104, and the plug rod 103 synchronously drives the piston 105 to slide in the barrel 101 to generate negative pressure in the barrel 101, thereby achieving liquid extraction.

[0050] As a further solution of this embodiment, please refer to Figure 4 and Figure 6, a limiting rod 607 is fixedly arranged on one end of the plug plate 605 close to the liquid inlet tube 501, and the limiting rod 607 passes through the second port 609 and is fixed to the sealing disk 608; wherein, the diameter of the limiting rod 607 is smaller than the diameter of the second port 609, and the diameter of the sealing disk 608 is larger than the diameter of the second port 609 and smaller than the inner diameter of the liquid inlet tube 501; it can be explained that when the plug plate 605 is located at the bottom of the liquid storage chamber 604, the limiting rod 607 extends into the liquid inlet tube 501, and as the plug plate 605 rises, the plug plate 605 synchronously drives the sealing disk 608 to rise through the limiting rod 607, and when the plug plate 605 rises to the extreme position, the sealing disk 608 just moves to the second port 609, and the second port 609 can be closed, thereby preventing the amniotic fluid in the liquid storage chamber 604 from leaking out of the second port 609 and causing subsequent sample contamination.

[0051] As a further solution of this embodiment, please refer to Figure 6 , the rotating module includes a gear 507 fixedly arranged on the top of each sealing rod 602, wherein a driving ring 502 is rotatably arranged on the liquid storage cylinder 5, and a plurality of groups of arc-shaped racks 601 for meshing with the gears 507 are fixedly arranged on the inner surface of the driving ring 502 in a circumferential array, and the driving ring 502 is connected to a driving part that drives it to rotate; it can be explained that when the plug plate 605 of this embodiment rises, the plug plate 605 synchronously drives the gear 507 to rise through the sealing rod 602, and when the plug plate 605 moves to the extreme position, the gear 507 moves to a meshing state with the arc-shaped rack 601, and as the driving part drives the driving ring 502 to rotate, the driving ring 502 rotates, and the arc-shaped rack 601 meshes with the gear 507 to drive the sealing rod 602 to rotate 90 degrees, thereby making the receiving hole 610 communicate with the infusion channel 606;

[0052] Correspondingly, after the sampling is completed, the driving unit drives the driving ring 502 to rotate in the opposite direction, thereby driving each sealing rod 602 to reset.

[0053] In this embodiment, please refer to Figure 5 The driving part includes a positioning rod 505 fixedly arranged on the liquid storage cylinder 5, and the top of the positioning rod 505 is fixed to the arc-shaped positioning plate 504, wherein the outer edge of the driving ring 502 is fixedly arranged with an annular slide rail 503, and the inner edge of the arc-shaped positioning plate 504 is provided with an arc-shaped slide groove slidably connected to the annular slide rail 503; the outer edge of the annular slide rail 503 is fixedly arranged with a pull ring 509; it can be explained that the medical staff pulls the driving ring 502 to rotate through the pull ring 509 to attach Figure 5 For example, the pull ring 509 is set at an equal circumferential distance from the arc-shaped positioning plates 504 on both sides. Medical staff can pull the pull ring 509 toward either side. When the pull ring 509 moves to abut against the arc-shaped positioning plate 504, it means that the sealing rod 602 rotates 90 degrees.

[0054] In order to further confirm the rotation angle of the sealing rod 602, in this embodiment, a conical pointer 508 is fixedly arranged on each gear 507, and when the receiving hole 610 and the infusion channel 606 are in a dislocated closed state, the conical end of the conical pointer 508 points perpendicular to the axis of the liquid storage cylinder 5; it can be explained that the medical staff can judge the connection state of the receiving hole 610 and the infusion channel 606 by observing whether the conical end of the conical pointer 508 points perpendicular to the axis of the liquid storage cylinder 5, so as to ensure the stability of the infusion;

[0055] Correspondingly, since the conical pointer 508 is arranged above the gear 507, when the plug plate 605 rises to the extreme position, as the sealing rod 602 rotates, the sealing rod 602 synchronously drives the conical pointer 508 to rotate, and the medical staff can also judge whether the receiving hole 610 is connected with the infusion channel 606 by observing the direction of the conical end of the conical pointer 508. During rotation, the conical pointer 508 moves to above the drive ring 502, and the drive ring 502 can limit the conical pointer 508, thereby preventing the plug plate 605 from descending and causing the amniotic fluid in the liquid storage chamber 604 to leak out, further improving the stability of the sealing disk 608 sealing the second port 609.

[0056] In this embodiment, please refer to Figure 1-Figure 2 , the liquid storage cylinder 5 is fixed to one side of the scanning probe 2 through the connecting plate 402; specifically, in the present embodiment, during the sampling process, the scanning probe 2 is used to observe the conditions of the fetus and the puncture needle 6 to ensure the steady progress of the sampling.

[0057] In order to facilitate the positioning of the puncture needle 6 and the syringe mechanism 1, in this embodiment, the mounting bracket 3 is fixedly arranged on the scanning probe 2, and a screw 301 is rotatably arranged on one side of the mounting bracket 3, and the two sides of the screw 301 rotate in opposite directions. A first nut 302 and a second nut 4 are symmetrically spirally sleeved on the screw 301, and the first nut 302 is connected to the first positioning portion, and the first positioning portion is used to position and fix the barrel 101, and the second nut 4 is connected to the second positioning portion, and the second positioning portion is used to position and fix the puncture needle 6; It can be explained that in this embodiment, Before puncture, the barrel 101 is first positioned and fixed by the first positioning portion, and the puncture needle 6 is then positioned and fixed by the second positioning portion, and then the screw 301 is rotated so that the first nut 302 and the second nut 4 drive the barrel 101 and the puncture needle 6 toward the direction of the liquid storage cylinder 5, thereby making the suction tube 106 connected with the first port 506, and the liquid inlet tube 501 connected with the cartridge 611. Correspondingly, when the sampling is completed, the screw 301 rotates in the opposite direction, and the first nut 302 and the second nut 4 can drive the components to separate.

[0058] In addition, a guide groove may be provided on one side of the mounting frame 3 to guide the movement of the first nut 302 and the second nut 4 so as to keep them moving in a straight line.

[0059] See also Figure 1-Figure 3 The first positioning part includes a positioning plate 303 fixed to the first nut 302, and U-shaped plates 304 are fixedly arranged on both sides of the positioning plate 303 and engaged with the support ear 102, wherein the bottom of the positioning plate 303 is also fixedly arranged with an arc-shaped limit plate 305 engaged with the cylinder 101, and the second positioning part includes a driving rod 401 fixed to the second nut 4, the driving rod 401 slides through the connecting plate 402 and is fixed to the limit plate 403, and the end of the limit plate 403 is fixedly arranged The positioning disk 404 is provided with a positioning groove 405 for embedding the cartridge 611, and a circular groove 406 is provided at the bottom of the positioning groove 405; specifically, on the fixed cylinder 101, the support ear 102 is clamped in the U-shaped plate 304, and the cylinder 101 and the arc-shaped limiting plate 305 are embedded at the same time. When fixing the puncture needle 6, the puncture needle 6 is passed through the circular groove 406, so that the cartridge 611 can be embedded in the positioning groove 405 for limiting, and the stability is higher.

[0060] A sampling method of an anti-clogging amniotic fluid sampler for obstetrics and gynecology, comprising the following steps:

[0061] See also Figure 4-Figure 6 , connect the puncture needle 6 with the liquid inlet tube 501, and then connect the first port 506 with the suction end of the syringe mechanism 1. At this time, the plug plate 605 is at the bottom of the liquid storage chamber 604;

[0062] The medical staff inserts the puncture needle 6 into the corresponding sampling position;

[0063] The syringe mechanism 1 generates negative pressure. Under the suction effect of the negative pressure, the plug plate 605 slides upward in the liquid storage chamber 604, so that negative pressure is also generated in the space at the bottom of the plug plate 605. The amniotic fluid can be sucked into the liquid storage chamber 604 through the puncture needle 6, the liquid inlet tube 501 and the second port 609 in sequence.

[0064] After the plug plate 605 rises to the limit position, the amount of amniotic fluid sucked into the liquid storage chamber 604 just reaches 2 ml;

[0065] The rotating module synchronously drives each sealing rod 602 to synchronously rotate 90 degrees, so that the receiving hole 610 on each sealing rod 602 and the infusion channel 606 are in a state of mutual communication;

[0066] The medical staff adjusts the syringe mechanism 1 to continue to generate negative pressure, and the sampling liquid in the infusion channel 606 can be sucked into the syringe mechanism 1 through the receiving hole 610 and the first port 506 to achieve sampling and collection.

[0067] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0068] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An anti-clogging amniotic fluid sampler for obstetrics and gynecology, characterized in that: It comprises a syringe mechanism (1) for drawing amniotic fluid and a liquid storage cylinder (5); The liquid storage cylinder (5) is provided with a liquid storage cavity (604) for storing amniotic fluid. The liquid storage cylinder (5) is provided with a first port (506), which is in communication with the suction end of the syringe mechanism (1). The bottom of the liquid storage cylinder (5) is also provided with a second port (609), the other end of the second port (609) is in communication with the liquid inlet tube (501), the liquid inlet tube (501) is connected with the puncture needle (6), a plug plate (605) is slidably arranged in the liquid storage cavity (604), a plurality of groups of through holes (603) are circumferentially arranged on the top wall of the liquid storage cylinder (5), a sealing rod (602) rotatably connected to the plug plate (605) is slidably arranged in the through hole (603), and a through hole (603) is provided on the sealing rod (602); A receiving hole (610) is provided on the sealing rod (602) close to the plug plate (605); a plurality of groups of infusion channels (606) are provided on the wall of the liquid storage cylinder (5) in a circumferential array, one end of the infusion channel (606) is connected to the liquid inlet pipe (501), and the other end passes through the through hole (603) and is connected to the first port (506); It also includes a rotating module arranged on the liquid storage cylinder (5), and the rotating module is used to synchronously drive each sealing rod (602) to rotate.

2. The anti-clogging amniotic fluid sampler for obstetrics and gynecology according to claim 1, characterized in that: A cartridge (611) is fixedly arranged on the puncture needle (6), and the liquid inlet tube (501) is plugged and connected to the cartridge (611).

3. The anti-clogging amniotic fluid sampler for obstetrics and gynecology according to claim 1, characterized in that: The syringe mechanism (1) comprises a barrel (101), the suction end comprises a suction tube (106) fixedly arranged at the bottom of the barrel (101), the suction tube (106) is communicated with the inner cavity of the barrel (101), a piston (105) is slidably arranged in the barrel (101), and the piston (105) is fixed to a plug rod (103) slidably arranged in the barrel (101); A handle (104) is fixedly arranged on one end of the plug rod (103) away from the piston (105), and a support ear (102) is fixedly arranged on the cylinder body (101).

4. The anti-clogging amniotic fluid sampler for obstetrics and gynecology according to claim 1, characterized in that: A limiting rod (607) is fixedly arranged on one end of the plug plate (605) close to the liquid inlet pipe (501), and the limiting rod (607) passes through the second port (609) and is fixed to the sealing disk (608); The diameter of the limiting rod (607) is smaller than the diameter of the second port (609), and the diameter of the sealing disk (608) is larger than the diameter of the second port (609) and smaller than the inner diameter of the liquid inlet pipe (501).

5. The anti-clogging amniotic fluid sampler for obstetrics and gynecology according to claim 1, characterized in that: The rotating module comprises a gear (507) fixedly arranged on the top of each sealing rod (602), wherein a driving ring (502) is rotatably arranged on the liquid storage cylinder (5), and a plurality of groups of arc-shaped racks (601) for meshing with the gear (507) are fixedly arranged in a circumferential array on the inner surface of the driving ring (502), and the driving ring (502) is connected to a driving part that drives it to rotate.

6. The anti-clogging amniotic fluid sampler for obstetrics and gynecology according to claim 5, characterized in that: The driving part comprises a positioning rod (505) fixedly arranged on the liquid storage cylinder (5), and the top end of the positioning rod (505) is fixed to the arc-shaped positioning plate (504); The outer surface of the driving ring (502) is fixedly provided with an annular slide rail (503), the inner surface of the arc-shaped positioning plate (504) is provided with an arc-shaped slide groove slidably connected to the annular slide rail (503); and the outer surface of the annular slide rail (503) is fixedly provided with a pull ring (509).

7. The anti-clogging amniotic fluid sampler for obstetrics and gynecology according to claim 6, characterized in that: A conical pointer (508) is fixedly arranged on each of the gears (507), and when the receiving hole (610) and the infusion channel (606) are in a dislocated closed state, the conical end of the conical pointer (508) points perpendicular to the axis of the liquid storage cylinder (5).

8. The anti-clogging amniotic fluid sampler for obstetrics and gynecology according to claim 2, characterized in that: The liquid storage cylinder (5) is fixed to one side of the scanning probe (2) via a connecting plate (402).

9. The anti-clogging amniotic fluid sampler for obstetrics and gynecology according to claim 8, characterized in that: The scanning probe (2) is fixedly provided with a mounting frame (3), a screw rod (301) is rotatably provided on one side of the mounting frame (3), the two sides of the screw rod (301) rotate in opposite directions, a first nut (302) and a second nut (4) are symmetrically spirally sleeved on the screw rod (301), the first nut (302) is connected to a first positioning portion, the first positioning portion is used to position and fix the barrel (101), the second nut (4) is connected to a second positioning portion, the second positioning portion is used to position and fix the puncture needle (6).

10. The anti-clogging amniotic fluid sampler for obstetrics and gynecology according to claim 9, characterized in that: The first positioning portion comprises a positioning plate (303) fixed to the first nut (302), and U-shaped plates (304) clamped to the support ears (102) are respectively fixedly arranged on both sides of the positioning plate (303); Among them, an arc-shaped limiting plate (305) engaged with the cylinder (101) is fixedly arranged at the bottom of the positioning plate (303), and the second positioning part includes a driving rod (401) fixed to the second nut (4), and the driving rod (401) slides through the connecting plate (402) and is fixed to the limiting plate (403), and a positioning disk (404) is fixedly arranged at the end of the limiting plate (403), and a positioning groove (405) for embedding the cartridge (611) is provided on the positioning disk (404), and a circular groove (406) is provided at the bottom of the positioning groove (405).

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