A secretion sampling device for obstetrics

Abstract

The present invention relates to the field of obstetric clinical technology, and specifically to an obstetric secretion sampling device. It comprises an outer cylinder, a cavity is fixedly opened inside the outer cylinder, a plurality of ring-supporting capsules distributed in a linear array are fixedly connected to the peripheral side of the cavity, an electric control module connected to the ring-supporting capsule is installed at the tail of the outer cylinder, a plurality of outer hole groups distributed in a linear array are opened inside the outer cylinder, an inner rotating cylinder driven by a first motor is rotatably connected to the inner wall of the outer cylinder, a group of sampling inner holes distributed in a linear array and matched with the outer hole group are opened inside the inner rotating cylinder, a driving mechanism is installed at the axial position of the inner rotating cylinder, and a transfer cylinder driven by a second motor is rotatably connected to the inner wall of the inner rotating cylinder. The beneficial effects of the present invention are: on the one hand, the sampling device can realize multi-point synchronous sampling when sampling vaginal secretions, and on the other hand, it can also realize continuous dislocation sampling when sampling vaginal secretions.

Description

Technical Field

[0001] The invention relates to the technical field of obstetric clinical medicine, in particular to a secretion sampling device for obstetrics. Background Art

[0002] Before giving birth, mothers need to undergo various physical examinations, one of which includes examination of vaginal secretions to determine the level of estrogen in the mother, whether inflammation occurs, and whether there is reproductive system infection. When taking samples, a vaginal secretion sampling device is needed to assist in sampling.

[0003] In the prior art, a patent document with publication number CN114343730A discloses a vaginal secretion sampling device for obstetric clinical use, comprising an integrated tube, a through groove, a threaded ring, a movable shaft and a transparent tube. The front of the integrated tube is provided with two groups of through grooves arranged side by side, the inner wall of the integrated tube is provided with a threaded ring, and the back of the integrated tube is provided with two groups of movable shafts arranged side by side. The top and bottom of the integrated tube are both provided with a transparent tube, and the inner wall of the threaded ring is provided with a connecting sleeve through threaded engagement, and the inner wall of the connecting sleeve is provided with a micro-electric extension rod, and the back of the micro-electric extension rod extends out of the interior of the connecting sleeve, and the back of the micro-electric extension rod is provided with a round rod, and the back of the round rod is provided with a threaded rod. In the above device, the sampling cover is used to scrape the inner wall of the patient's vagina, and the secretions on the inner wall of the vagina are collected into the interior of the sampling cover, and then the secretions are concentrated on the outer surface of the sampling cover. After the sampling is completed, the sampling cover in the device is removed and placed in a set loading bottle.

[0004] However, the above sampling device is not convenient for realizing multi-point synchronous sampling when sampling vaginal secretions, and is not convenient for realizing continuous staggered sampling when sampling. Based on this, the present invention provides an obstetric secretion sampling device to solve the problems raised in the above background technology. Summary of the invention

[0005] The present invention aims at the technical problems existing in the prior art and provides an obstetric secretion sampling device to solve the problem that the existing sampling devices are not convenient for realizing multi-point synchronous sampling when sampling vaginal secretions, and are not convenient for realizing continuous staggered sampling when sampling.

[0006] The technical solution of the present invention for solving the above-mentioned technical problems is as follows: an obstetric secretion sampling device comprises an outer cylinder, a cavity is fixedly opened inside the outer cylinder, a plurality of ring-supporting bags distributed in a linear array are fixedly connected to the circumferential side surface of the cavity, an electric control module connected to the ring-supporting bags is installed at the tail of the outer cylinder, a plurality of outer hole groups distributed in a linear array are opened inside the outer cylinder, an inner wall of the outer cylinder is rotatably connected to an inner rotating cylinder driven by a first motor, a group of sampling inner holes distributed in a linear array and cooperating with the outer hole group are opened inside the inner rotating cylinder, a driving mechanism is installed at the axial position of the inner rotating cylinder, the inner wall of the inner rotating cylinder is rotatably connected to an indexing cylinder driven by a second motor, a plurality of sample storage mechanisms distributed in a linear array are installed inside the indexing cylinder, each of the sample storage mechanisms comprises a group of sampling modules distributed in a circular array and installed in the indexing cylinder.

[0007] The beneficial effects of the present invention are:

[0008] 1) The sampling device can realize multi-point synchronous sampling when sampling vaginal secretions on the one hand, and can also realize continuous staggered sampling when sampling vaginal secretions on the other hand.

[0009] 2) When the sampling device penetrates into the vagina of an obstetric patient, the device enters the sampling mode. When the sampling mode is in progress, first, the air pump quantitatively pressurizes the interior of the cavity. After the feedback value of the air pressure probe reaches the set value, the inner wall of the vagina is fully exposed and the set distance is maintained with the sampling outer hole. After the sampling outer hole and the inner wall of the vagina maintain the set distance, the inner rotating cylinder rotates the set angle and aligns the sampling inner hole with the set sampling angle and the set sampling position. After the inner rotating cylinder rotates the set angle, the sampling inner hole is aligned with the special sampling position. The sampling outer hole at a fixed position is connected. After the inner rotating cylinder completes rotation, the screw pitch adjustment module drives the transmission plate to gradually approach the direction of the guide rotary seat. When the transmission plate is fully displaced, the cotton head aligned with the sampling inner hole is extended outward. After the cotton head is extended, the secretions are sampled from the inner wall of the vagina of the obstetric patient. After the sampling of a single angle is completed, the sampling inner hole can be realigned to a specific sampling angle by rotating the indexing cylinder and the inner rotating cylinder, and then another group of cotton heads can be used for continuous sampling of obstetric endocrine secretions.

[0010] Based on the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the electronic control module includes a handle fixed to the tail of the outer tube, a battery and a single-chip microcomputer are respectively built into the interior of the handle, an air pump is fixedly installed on the surface of the handle, a port of the air pump is fixedly connected to the cavity, an air pressure probe is fixedly provided at the connection point between the air pump and the cavity, and the data ends of the battery, air pump and air pressure probe are all electrically connected to the single-chip microcomputer.

[0012] The beneficial effect of adopting the above further scheme is that the battery is used to supply power to the power using mechanism in the device, the air pump is used to quantitatively pressurize the interior of the cavity, and the air pressure probe is used to monitor the air pressure data inside the cavity in real time, thereby assisting in measuring the expansion amplitude of the ring support bag.

[0013] Furthermore, each of the outer hole groups includes a group of sampling outer holes distributed in a circular array and opened inside the outer cylinder, the number of the sampling inner holes is the same as the number of the outer hole groups, the positions of the sampling inner holes correspond to the positions of the sampling outer holes, and the axes of the sampling outer holes and the sampling inner holes are perpendicular to the axis of the outer cylinder.

[0014] Furthermore, the driving mechanism comprises a transmission plate and a positioning frame rotatably connected to the inner wall of the inner rotating cylinder, the surface of the positioning frame is fixedly connected to the inner surface of the inner rotating cylinder, a screw pitch adjustment module is fixedly installed between the inner surfaces of the positioning frame, the peripheral side surface of the screw pitch adjustment module is transmission-connected to two symmetrically arranged driving seats with adjustable spacing, the inner walls of the two driving seats are slidingly connected to the positioning frame, connecting rods are hinged between the relative surfaces of the two driving seats and the transmission plate, the inner wall of the transmission plate and the position corresponding to each sampling inner hole are rotationally connected with a guide rotary seat cooperating with the sampling module, the bottom end of the guide rotary seat is fixedly installed with a driven bevel gear, and the inner wall of the positioning frame is installed with a tensioning transmission module transmission-connected to the driven bevel gear.

[0015] The beneficial effect of adopting the above further scheme is that when the sampling device is in a non-sampling state, the sampling inner hole and the sampling outer hole are in a staggered setting state, and then the sampling inner hole is sealed. After the sampling inner hole is sealed, external secretions are prevented from entering the interior of the sampling device, and in the non-sampling state, the screw rod distance adjustment module drives the two drive seats to make the two drive seats sufficiently close to each other. After the two drive seats are sufficiently close to each other, the guide rotary seat and the transmission plate are sufficiently away from the sampling module, and then the sampling module is in a non-use state;

[0016] When the sampling device is in the non-sampling mode, the gas inside the ring support bag is fully emptied;

[0017] When the sampling device penetrates into the vagina of an obstetric patient, the device enters the sampling mode. During the sampling mode, first, the air pump quantitatively pressurizes the interior of the cavity. After the feedback value of the air pressure probe reaches the set value, the inner rotating cylinder rotates the set angle, and the sampling inner hole is aligned with the set sampling angle and the set sampling position. After the inner rotating cylinder rotates the set angle, the sampling inner hole is connected to the sampling outer hole at a specific position. After the inner rotating cylinder is completely rotated, the screw pitch adjustment module drives the transmission plate to gradually approach the direction of the guide rotary seat. When the transmission plate is fully displaced, the cotton head aligned with the sampling inner hole is extended outward. After the cotton head is extended, the secretions are sampled from the inner wall of the vagina of the obstetric patient. After the sampling of a single angle is completed, the sampling inner hole can be realigned to a specific sampling angle by rotating the indexing cylinder and the inner rotating cylinder, and then another group of cotton heads can be used for continuous sampling of obstetric endocrine secretions.

[0018] Furthermore, the screw pitch adjustment module includes a third motor fixed to the surface of the positioning frame and a pitch adjusting screw rotatably connected to the inner surface of the positioning frame. The circumferential side surface of the pitch adjusting screw is symmetrically provided with a forward threaded portion and a reverse threaded portion. The circumferential side surfaces of the forward threaded portion and the reverse threaded portion are respectively transmission-connected to two drive seats. The axis of the pitch adjusting screw is parallel to the axis of the outer cylinder.

[0019] The beneficial effect of adopting the above further scheme is that when in use, the two drive seats can be driven to approach each other or move away from each other synchronously by setting the forward threaded portion and the reverse threaded portion, and the position of the transmission plate is changed by changing the spacing between the two drive seats.

[0020] Furthermore, the tensioning transmission module respectively includes a tensioning block slidably connected to the inside of the positioning frame, a fourth motor fixed to a side of the positioning frame and a linkage shaft rotatably connected to the inside of the positioning frame, a tensioning spring is fixedly installed between the relative surfaces of the tensioning block and the positioning frame, the inner wall of the tensioning block is rotatably connected to the tensioning wheel, the output shaft end of the fourth motor is transmission-connected to a chain belt, the circumferential side surfaces of the chain belt are transmission-connected to the linkage shaft and the tensioning wheel, respectively, the circumferential side surfaces of the linkage shaft and the positions corresponding to the bottom of each guide rotary seat are fixedly installed with transmission bevel teeth, and the circumferential side surfaces of each transmission bevel tooth are transmission-connected to the driven bevel teeth at the corresponding position.

[0021] The beneficial effect of adopting the above further solution is that, when in use, by setting the tensioning transmission module, the fourth motor can continuously tension the linkage shaft during the process of position change of the transmission plate.

[0022] Furthermore, a guide rubber head is fixedly installed at the end of the outer tube, and a baffle is fixedly installed at the tail of the outer tube and adjacent to the handle. The guide rubber head, the baffle and the ring support bag are all made of silicone.

[0023] Furthermore, the sampling module includes a T-shaped guide column slidably connected to the transfer cylinder, and a compression spring is sleeved on the peripheral side surface of the T-shaped guide column and at a position corresponding to the inner side of the transfer cylinder. The inner wall of the T-shaped guide column is rotatably connected to a rotary rod, a cotton head is bonded to the top of the rotary rod, and a driven rotary seat cooperating with the guide rotary seat is fixedly installed at the bottom end of the rotary rod.

[0024] Furthermore, the rotation axis of the rotating rod is perpendicular to the axis of the outer cylinder.

[0025] Furthermore, the plurality of the ring support bags and the plurality of the outer hole groups are arranged in pairs at intervals on the peripheral side surface of the outer cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of an obstetric secretion sampling device of the present invention;

[0027] Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0028] Figure 3 For the present invention Figure 2 A schematic cross-sectional structure diagram of ;

[0029] Figure 4 For the present invention Figure 3 A schematic diagram of the local enlarged structure at B in the middle;

[0030] Figure 5 For the present invention Figure 3 A schematic diagram of the local enlarged structure at C in the middle;

[0031] Figure 6 It is a schematic diagram of the structure of the transmission plate and the positioning frame of the present invention;

[0032] Figure 7 For the present invention Figure 6 A schematic diagram of the local enlarged structure at D in the middle;

[0033] Figure 8 It is a structural schematic diagram of the positioning frame and the lead screw pitch adjustment module of the present invention.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] 1. Outer cylinder; 2. Ring support bag; 3. First motor; 4. Inner rotating cylinder; 5. Sampling inner hole; 6. Second motor; 7. Indexing cylinder; 8. Handle; 9. Battery; 10. Air pressure probe; 11. Sampling outer hole; 12. Transmission plate; 13. Positioning frame; 14. Screw pitch adjustment module; 15. Driving seat; 16. Connecting rod; 17. Guide rotary seat; 18. Tensioning block; 19. Fourth motor; 20. Driven rotary seat; 21. Cotton head; 22. Linkage shaft; 23. Tensioning spring; 24. Tensioning wheel; 25. Guide rubber head; 26. Baffle; 27. T-shaped guide column; 28. Compression spring; 29. ​​Rotary rod; 30. Air pump. DETAILED DESCRIPTION

[0036] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0037] The present invention provides the following preferred embodiments

[0038] like Figure 1-8 As shown, a secretion sampling device for obstetrics comprises an outer tube 1, a cavity is fixedly opened inside the outer tube 1, a plurality of ring-supporting capsules 2 distributed in a linear array are fixedly connected to the peripheral side of the cavity, and an electric control module connected to the ring-supporting capsules 2 is installed at the tail of the outer tube 1;

[0039] The electronic control module includes a handle 8 fixed to the tail of the outer tube 1, and a battery 9 and a single-chip microcomputer are built in the interior of the handle 8. An air pump 30 is fixedly installed on the surface of the handle 8, and the port of the air pump 30 is fixedly connected to the cavity. An air pressure probe 10 is fixedly provided at the connection point between the air pump 30 and the cavity, and the data ends of the battery 9, the air pump 30 and the air pressure probe 10 are all electrically connected to the single-chip microcomputer.

[0040] The storage battery 9 is used to supply power to the power using mechanism in the device, the air pump 30 is used to quantitatively charge the interior of the cavity, and the air pressure probe 10 is used to monitor the air pressure data inside the cavity in real time, and then assist in measuring the expansion amplitude of the ring support bag 2.

[0041] A guide rubber head 25 is fixedly installed at the end of the outer tube 1, and a shield 26 is fixedly installed at the tail of the outer tube 1 and adjacent to the handle 8. The guide rubber head 25, the shield 26 and the ring support capsule 2 are all made of silicone.

[0042] The shield 26 is provided to prevent secretions from being discharged from the obstetric vagina.

[0043] The outer tube 1 has a plurality of outer hole groups arranged in a linear array, and the plurality of ring support capsules 2 and the plurality of outer hole groups are arranged in pairs on the peripheral side of the outer tube 1;

[0044] The inner wall of the outer cylinder 1 is rotatably connected to an inner rotating cylinder 4 driven by a first motor 3. A group of sampling inner holes 5 distributed in a linear array and matched with the outer hole group are opened inside the inner rotating cylinder 4. A driving mechanism is installed at the axial position of the inner rotating cylinder 4.

[0045] Each outer hole group includes a group of sampling outer holes 11 distributed in a circular array and opened inside the outer cylinder 1. The number of sampling inner holes 5 is the same as the number of outer hole groups. The positions of the sampling inner holes 5 correspond to the positions of the sampling outer holes 11. The axes of the sampling outer holes 11 and the sampling inner holes 5 are perpendicular to the axis of the outer cylinder 1.

[0046] The driving mechanism includes a transmission plate 12 and a positioning frame 13 rotatably connected to the inner wall of the inner rotating cylinder 4. The surface of the positioning frame 13 is fixedly connected to the inner rotating cylinder 4. A screw pitch adjustment module 14 is fixedly installed between the inner surfaces of the positioning frame 13. The peripheral side of the screw pitch adjustment module 14 is transmission-connected to two symmetrically arranged drive seats 15 with adjustable spacing.

[0047] The inner walls of the two driving seats 15 are slidably connected to the positioning frame 13;

[0048] The screw pitch adjustment module 14 includes a third motor fixed to the surface of the positioning frame 13 and a pitch adjusting screw rotatably connected to the inner surface of the positioning frame 13. The circumferential side surface of the pitch adjusting screw is symmetrically provided with a forward threaded portion and a reverse threaded portion. The circumferential side surfaces of the forward threaded portion and the reverse threaded portion are respectively transmission-connected to the two drive seats 15. The axis of the pitch adjusting screw is parallel to the axis of the outer cylinder 1.

[0049] When in use, the forward threaded portion and the reverse threaded portion are arranged so that the two drive seats 15 can be driven to move synchronously closer to each other or farther away from each other, and the distance between the two drive seats 15 is changed, thereby changing the position of the transmission plate 12.

[0050] Connecting rods 16 are hinged between the two driving seats 15 and the relative surfaces of the transmission plate 12. The inner wall of the transmission plate 12 and the position corresponding to each sampling inner hole 5 are rotatably connected with a guide rotary seat 17 that cooperates with the sampling module. A driven bevel gear is fixedly installed on the bottom end of the guide rotary seat 17, and a tensioning transmission module connected to the driven bevel gear is installed on the inner wall of the positioning frame 13.

[0051] When the sampling device is in a non-sampling state, the sampling inner hole 5 and the sampling outer hole 11 are in a staggered setting state, and then the sampling inner hole 5 is sealed. After the sampling inner hole 5 is sealed, external secretions are prevented from entering the interior of the sampling device. In the non-sampling state, the screw distance adjustment module 14 drives the two drive seats 15 so that the two drive seats 15 are sufficiently close. After the two drive seats 15 are sufficiently close, the guide rotary seat 17 and the transmission plate 12 are sufficiently away from the sampling module, and then the sampling module is in a non-use state;

[0052] When the sampling device is in the non-sampling mode, the gas inside the ring support bag 2 is fully emptied;

[0053] When the sampling device penetrates into the vagina of the obstetric patient, the device enters the sampling mode. During the sampling mode, first, the air pump 30 quantitatively pressurizes the interior of the cavity. After the feedback value of the air pressure probe 10 reaches the set value, the inner rotating cylinder 4 rotates the set angle, and the sampling inner hole 5 is aligned with the set sampling angle and the set sampling position. After the inner rotating cylinder 4 rotates the set angle, the sampling inner hole 5 is connected with the sampling outer hole 11 at a specific position. After the inner rotating cylinder 4 is completely rotated, the screw pitch adjustment module 14 drives the transmission plate 12 to gradually approach the direction of the guide rotary seat 17. When the transmission plate 12 is fully displaced, the cotton head 21 aligned with the sampling inner hole 5 is extended outward. After the cotton head 21 is extended, the secretion sampling operation is then carried out from the inner wall of the vagina of the obstetric patient. After the sampling of a single angle is completed, the sampling inner hole 5 can be re-aligned to a specific sampling angle by rotating the indexing cylinder 7 and the inner rotating cylinder 4, and then another group of cotton heads 21 are used to continuously sample the obstetric endocrine secretions.

[0054] The inner wall of the inner rotating cylinder 4 is rotatably connected to an indexing cylinder 7 driven by a second motor 6 , and a plurality of sample storage mechanisms distributed in a linear array are installed inside the indexing cylinder 7 , each of which includes a group of sampling modules distributed in a circular array and installed in the indexing cylinder 7 .

[0055] The tensioning transmission module includes a tensioning block 18 slidably connected to the inside of the positioning frame 13, a fourth motor 19 fixed to one side of the positioning frame 13 and a linkage shaft 22 rotatably connected to the inside of the positioning frame 13. A tensioning spring 23 is fixedly installed between the tensioning block 18 and the opposite surface of the positioning frame 13. The inner wall of the tensioning block 18 is rotatably connected to a tensioning wheel 24. The output shaft end of the fourth motor 19 is transmission-connected to a chain belt. The circumferential side surfaces of the chain belt are transmission-connected to the linkage shaft 22 and the tensioning wheel 24 respectively. Transmission bevel teeth are fixedly installed on the circumferential side surfaces of the linkage shaft 22 and at the positions corresponding to the bottom of each guide rotary seat 17. The circumferential side surfaces of each transmission bevel tooth are transmission-connected to the driven bevel teeth at the corresponding position.

[0056] When in use, by setting the tensioning transmission module, the fourth motor 19 can continuously tension the linkage shaft 22 during the process of position change of the transmission plate 12 .

[0057] The sampling module includes a T-shaped guide column 27 which is slidably connected to the indexing cylinder 7. A compression spring 28 is sleeved on the peripheral side surface of the T-shaped guide column 27 and corresponds to the position inside the indexing cylinder 7. A rotary rod 29 is rotatably connected to the inner wall of the T-shaped guide column 27. A cotton head 21 is bonded to the top of the rotary rod 29. A driven rotary seat 20 which cooperates with the guide rotary seat 17 is fixedly installed at the bottom end of the rotary rod 29.

[0058] The rotation axis of the rotary rod 29 is perpendicular to the axis of the outer cylinder 1 .

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An obstetric secretion sampling device, comprising an outer cylinder (1), characterized in that: A cavity is fixedly provided inside the outer cylinder (1), a plurality of ring-support capsules (2) distributed in a linear array are fixedly connected to the peripheral side surface of the cavity, an electric control module connected to the ring-support capsules (2) is installed at the tail of the outer cylinder (1), and a plurality of external hole groups distributed in a linear array are provided inside the outer cylinder (1); The inner wall of the outer cylinder (1) is rotatably connected to an inner rotating cylinder (4) driven by a first motor (3), and a group of sampling inner holes (5) distributed in a linear array and cooperating with the outer hole group are formed inside the inner rotating cylinder (4); A driving mechanism is installed at the axis position of the inner rotating cylinder (4); the inner wall of the inner rotating cylinder (4) is rotatably connected to an indexing cylinder (7) driven by a second motor (6); a plurality of sample storage mechanisms distributed in a linear array are installed inside the indexing cylinder (7); each of the sample storage mechanisms comprises a group of sampling modules distributed in a circular array and installed in the indexing cylinder (7); The electric control module comprises a handle (8) fixed to the rear end of the outer cylinder (1), a storage battery (9) and a single-chip microcomputer are respectively built into the interior of the handle (8), an air pump (30) is fixedly mounted on the surface of the handle (8), a port of the air pump (30) is fixedly connected to the cavity, an air pressure probe (10) is fixedly arranged at the connection point between the air pump (30) and the cavity, and data ends of the storage battery (9), the air pump (30) and the air pressure probe (10) are all electrically connected to the single-chip microcomputer; each of the outer hole groups comprises a group of sampling outer holes (11) distributed in a circular array and opened inside the outer cylinder (1), the number of the sampling inner holes (5) is the same as the number of the outer hole groups, and the positions of the sampling inner holes (5) are The position corresponds to the position of the sampling outer hole (11), and the axes of the sampling outer hole (11) and the sampling inner hole (5) are perpendicular to the axis of the outer cylinder (1); the driving mechanism comprises a transmission plate (12) and a positioning frame (13) rotatably connected to the inner wall of the inner rotating cylinder (4), the surface of the positioning frame (13) is fixedly connected to the inner wall of the inner rotating cylinder (4), a screw pitch adjustment module (14) is fixedly installed between the inner surfaces of the positioning frame (13), and the peripheral side of the screw pitch adjustment module (14) is transmission-connected to two symmetrically arranged drive seats (15) with adjustable spacing, the inner walls of the two drive seats (15) are slidably connected to the positioning frame (13), and the two drive seats (15) are connected to the transmission plate (12). 2) are hingedly connected between the relative surfaces of the transmission plate (12), the inner wall of the transmission plate (12) and the position corresponding to each sampling inner hole (5) are rotatably connected to a guide rotary seat (17) that cooperates with the sampling module, the bottom end of the guide rotary seat (17) is fixedly installed with a driven bevel gear, and the inner wall of the positioning frame (13) is installed with a tensioning transmission module that is transmission-connected to the driven bevel gear; the screw rod pitch adjustment module (14) respectively includes a third motor fixed to the surface of the positioning frame (13) and a pitch adjustment screw rod rotatably connected to the inner surface of the positioning frame (13), the peripheral side surface of the pitch adjustment screw rod is symmetrically provided with a positive thread portion and a reverse thread portion, and the peripheral side surfaces of the positive thread portion and the reverse thread portion are respectively connected to the two The drive seat (15) is transmission-connected, and the axis of the pitch-adjusting screw rod is parallel to the axis of the outer cylinder (1); the tensioning transmission module comprises a tensioning block (18) slidably connected to the interior of the positioning frame (13), a fourth motor (19) fixed to one side of the positioning frame (13), and a linkage shaft (22) rotatably connected to the interior of the positioning frame (13); a tensioning spring (23) is fixedly installed between the opposing surfaces of the tensioning block (18) and the positioning frame (13); the inner wall of the tensioning block (18) is rotationally connected to a tensioning wheel (24); the output shaft end of the fourth motor (19) is transmission-connected to a chain belt, and the peripheral side surfaces of the chain belt are transmission-connected to the linkage shaft (22) and the tensioning wheel (24) respectively; Transmission bevel gears are fixedly mounted on the peripheral side surface of the linkage shaft (22) and at positions corresponding to the bottom of each guide rotary seat (17), and the peripheral side surface of each transmission bevel gear is transmission-connected to a driven bevel gear at a corresponding position; The sampling module comprises a T-shaped guide column (27) slidably connected to the transfer cylinder (7), a compression spring (28) is sleeved on the peripheral side surface of the T-shaped guide column (27) and at a position corresponding to the inner side of the transfer cylinder (7), a rotary rod (29) is rotatably connected to the inner wall of the T-shaped guide column (27), a cotton head (21) is bonded to the top end of the rotary rod (29), and a driven rotary seat (20) that cooperates with the guide rotary seat (17) is fixedly installed at the bottom end of the rotary rod (29).

2. The obstetric secretion sampling device according to claim 1, characterized in that: The plurality of annular support bags (2) and the plurality of external hole groups are arranged at intervals of two each on the peripheral side surface of the outer cylinder (1).

3. The obstetric secretion sampling device according to claim 1, characterized in that: A guide rubber head (25) is fixedly mounted on the end of the outer tube (1), and a shield (26) is fixedly mounted on the rear of the outer tube (1) and adjacent to the handle (8). The guide rubber head (25), the shield (26) and the ring support capsule (2) are all made of silicone.

4. The obstetric secretion sampling device according to claim 1, characterized in that: The rotation axis of the rotating rod (29) is perpendicular to the axis of the outer cylinder (1).

Images