CN113081066B

CN113081066B - Vaginal secretion sampling and storing device

Info

Publication number: CN113081066B
Application number: CN202110490145.4A
Authority: CN
Inventors: 殷雪瑞; 陈蓉; 郑川; 陈兴波; 梁佳美; 董明雪
Original assignee: Chengdu Shuangliu District First People's Hospital
Current assignee: Chengdu Shuangliu District First People's Hospital
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2022-06-24
Anticipated expiration: 2041-05-06
Also published as: CN113081066A

Abstract

The invention relates to the technical field of medical instruments, in particular to a vaginal secretion sampling and storing device. The specific technical scheme is as follows: the utility model provides a vaginal secretion sample save set, is provided with the outer barrel of open-ended including inside cavity and both ends, be provided with the removal post that can reciprocate in the outer barrel, be located be provided with the drive between outer barrel and the removal post and remove the guide assembly that the post reciprocated along outer barrel, the top of removing the post articulates there is the expansion piece that can open and shut, it runs through the control assembly who is provided with the control expansion piece and opens and shuts to pass through in the removal post, control assembly's one end stretches into in the expansion piece, and the other end stretches out outside the urceolus. The secretion sampling and storing device disclosed by the invention can effectively prevent the cotton swab from being polluted due to the contact with the secretion on the inner wall of the vagina and the microorganisms on the vulva, and is simple to operate, and medical workers can independently sample and operate.

Description

Vaginal secretion sampling and storing device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a vaginal secretion sampling and storing device.

Background

The vaginal secretion is prepared by mixing vaginal mucosa exudate, cervical canal and endometrial pancreatic secretion. The examination of vaginal secretion is used as a routine project of obstetrics and gynecology department, and hormone level, inflammation condition, microecological balance, pathological changes and the like of the internal environment of the vagina of a patient can be evaluated by examining the physical and chemical properties, pathogeny, pathology and the like of the vaginal secretion of the patient in various aspects, so as to assist in diagnosing the gynecological diseases.

At present, two devices for collecting and preserving vaginal secretions in clinical use are mainly used, one is that a disposable sterile cotton swab is directly stretched into a vagina to adhere the secretions, and then the cotton swab is put into a test tube to be tested; in the sampling mode, the collected sample is easily polluted by the secretion of the inner wall of the vagina and the microorganisms of the vulva in the process of inserting and taking out the cotton swab, so that the detection accuracy is influenced. In another mode, after the vagina is opened by the vaginal dilator, the disposable cotton swab is stretched into the vagina to collect secretion, and the cotton swab for collecting the secretion is taken out after the collection is completed.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a vaginal secretion sampling and storing device, which can effectively avoid the pollution caused by the contact of a cotton swab with vaginal inner wall secretion and vulva microorganisms, is simple to operate, and can be independently sampled and operated by medical staff.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the invention discloses a vaginal secretion sampling and storing device, which comprises an outer cylinder body which is hollow inside and provided with openings at two ends, wherein a moving column capable of moving in a reciprocating manner is arranged in the outer cylinder body, a guide component for driving the moving column to move in a reciprocating manner along the length direction of the outer cylinder body is arranged between the outer cylinder body and the moving column, an expansion sheet capable of opening and closing is hinged to the top of the moving column, a control component for controlling the expansion sheet to open and close is arranged in the moving column in a penetrating manner, one end of the control component extends into the expansion sheet, and the other end of the control component extends out of the outer cylinder body.

Preferably, an inner thread groove is formed in the outer cylinder, a first external thread is arranged on the outer wall of the movable column, and the first external thread is matched with the inner thread groove.

Preferably, the direction subassembly includes the arc baffle, the one end of arc baffle is fixed with the connecting plate, be fixed with the cylindricality handle on the face of connecting plate, it places to remove the post on the arc baffle, first external screw thread sets up on the half side of removing the post, the plain noodles that remove the post contacts with the concave surface of arc baffle, the cylindricality handle stretches out from the opening part of outer barrel bottom.

Preferably, the expansion piece is including left expansion piece and right expansion piece, left and right expansion piece shape size is the same, left and right expansion piece is by the arc, set up to be hemisphere shell and set up the bottom plate at the arc other end in arc one end and constitute, the arc breach has been seted up on the bottom plate, one end formation spherical end after left and right expansion piece merges, the other end forms the through-hole by two arc breachs merger, spherical end is located outer barrel open-top's center department.

Preferably, the top of the movable column is provided with a cylindrical groove, a limiting groove is formed in the cylindrical groove, a cylindrical hole is vertically formed in the movable column, the axis of the cylindrical hole coincides with the axis of the limiting groove and the axis of the cylindrical groove, the inner diameter of the cylindrical groove is larger than the diameter of the bottom plate, and the left expansion piece and the right expansion piece are rotatably connected in the cylindrical groove respectively.

Preferably, the symmetry is provided with the breach on the inner wall in cylindrical groove, be provided with the shaft hole on the corresponding both sides wall of breach, be provided with the fixed block on left and right expansion piece, the lateral wall that is close to its bottom, the both ends of fixed block are provided with the pivot, at least one of them pivot and fixed block elastic connection, pivot and shaft hole looks adaptation.

Preferably, the control assembly comprises a control rod and a second external thread arranged on the outer wall of the control rod, a stop block with the diameter larger than that of the through hole is arranged at one end of the control rod, a sampling part fixing column is arranged at the top of the stop block, the other end of the control rod extends out of the outer barrel body, the stop block is positioned above the bottom plate, and an adjusting part for adjusting the opening angle of the left expansion piece and the right expansion piece is rotatably arranged on the control rod and below the stop block.

Preferably, the adjusting part comprises a sleeve, an internal thread is arranged in the sleeve to enable the sleeve to be in threaded connection with the control rod, limiting blocks arranged in limiting grooves are symmetrically arranged on the outer side wall of the sleeve, the two limiting blocks correspond to a bottom plate respectively, the outer diameter of the sleeve is smaller than or equal to the aperture of the through hole, and the sum of the length of the two limiting blocks and the diameter of the sleeve is larger than the aperture of the through hole.

Preferably, the sleeve is close to the symmetry on the lateral wall of its bottom and is provided with the elasticity fastener, vertically on the inner wall in cylindrical hole be provided with a plurality of spherical grooves, spherical groove and elasticity fastener adaptation, be provided with the guide way that runs through all spherical grooves on the inner wall in cylindrical hole, the one end of guide way run through extremely the bottom of spacing groove.

Preferably, the elastic clamping piece comprises a groove arranged on the side wall of the sleeve, a clamping block is connected in the groove through the elastic piece, and the clamping block and the limiting block are located on the same straight line.

The invention has the following beneficial effects:

according to the invention, the movable column is arranged in the outer cylinder body, and the movable column moves towards the direction of the opening at the top of the outer cylinder body in the rotating process through the matching among the arc-shaped guide plate, the inner thread groove and the first outer thread in the outer cylinder body, so that the expansion piece rotationally connected to the top of the movable column extends out of the position of a human body to be sampled, and then the left expansion piece and the right expansion piece are opened by pushing the control rod arranged in the movable column to expose the cotton swab arranged in the expansion piece; and then the control rod is rotated to extend into the expansion sheet under the action of the threads, so that the cotton swab is gradually close to the contact sampling position to collect secretions. After the collection is completed, the control rod is only required to be rotated reversely, the cotton swab is extended into the expansion piece again, the control rod is pulled again, the sleeve on the control rod is reset, the expansion piece is closed, the expansion piece stores the cotton swab, and the cotton swab is prevented from being contacted with air or other substances. In the whole sampling process, the cotton swab can not contact with the secretion of the inner wall of the vagina and the vulva microorganisms, the accuracy of the detection result is ensured, and the sampling is simple to operate and can be independently completed by medical workers.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a view from A-A of FIG. 1 (excluding the control assembly);

FIG. 3 is a view of the expansion tab taken in the direction A-A of FIG. 1;

FIG. 4 is an enlarged view of a portion A of FIG. 1;

FIG. 5 is a view taken along line B-B of FIG. 1;

FIG. 6 is an enlarged view of portion B of FIG. 5;

FIG. 7 is a schematic view of a moving column structure;

FIG. 8 is a schematic view of a guide assembly;

FIG. 9 is a schematic view of the structure of the left or right expansion piece;

FIG. 10 is a schematic view showing the structure of the control unit after the expansion piece is opened (corresponding to the use state diagram);

FIG. 11 is a partial enlarged view of C in FIG. 10;

in the figure: the outer cylinder body 1, the mobile column 2, the internal thread groove 3, the first external thread 4, the arc guide plate 5, the connecting plate 6, the cylindrical handle 7, the left expansion piece 8, the right expansion piece 9, the bottom plate 10, the arc notch 11, the through hole 12, the cylindrical groove 13, the limiting groove 14, the cylindrical hole 15, the notch 16, the shaft hole 17, the fixing block 18, the rotating shaft 19, the control rod 20, the second external thread 21, the stop dog 22, the fixing column 23, the sleeve 24, the internal thread 25, the limiting block 26, the spherical groove 27, the guide groove 28 and the clamping block 29.

Detailed Description

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

Unless otherwise indicated, the technical means used in the examples are conventional means well known to those skilled in the art.

Referring to fig. 1-11, the present invention discloses a vaginal secretion sampling and storing device, which comprises an outer cylinder 1 with a hollow interior and openings at two ends, wherein the diameter of the opening at the bottom end is smaller than the inner diameter of the outer cylinder 1, so as to prevent other components in the outer cylinder 1 from falling. Be provided with in the outer barrel 1 along its length direction reciprocating motion's removal post 2, be located and be provided with the drive between outer barrel 1 and the removal post 2 and remove the guide assembly of post along 1 length direction reciprocating motion of outer barrel, the top of removing post 2 articulates there is the expansion piece that can open and shut, runs through to be provided with the control assembly that control expansion piece opened and shut in the removal post 2, and control assembly's one end stretches into in the expansion piece, and the other end stretches out outside barrel 1.

Further, be provided with internal thread groove 3 in the outer barrel 1, be provided with first external screw thread 4 on the 2 outer walls of removal post, first external screw thread 4 and the cooperation of internal thread groove 3. It should be noted that: the inner thread groove 3 is arranged in the outer cylinder body 1 and mainly used for compressing the space in the outer cylinder body 1, so that the situation that threads on the movable column 2 cannot be meshed with the threads in the outer cylinder body 1 is avoided. In the present invention, the pitch of the internal thread groove 3 is the same as that of the first external thread 4, and the first external thread 4 is engaged with the internal thread groove 3, and the movable column 2 reciprocates in the longitudinal direction of the outer cylinder 1 in a rotated state by engagement of the both.

Wherein, the direction subassembly includes arc baffle 5, and the one end of arc baffle 5 is fixed with connecting plate 6, is fixed with cylindricality handle 7 on the face of connecting plate 6, and cylindricality handle 7 is the tube-shape, offers the communicating hole with cylindricality handle 7 on connecting plate 6 for control lever 20 can pass connecting plate 6 and cylindricality handle 7. Remove post 2 and place on arc baffle 5, remove and not have the relation of connection between post 2 and the arc baffle 5, and first external screw thread 4 sets up on the half side of removing post 2, and first external screw thread 4 does not fill up the whole lateral surface that removes post 2 promptly, but sets up on the partial side of removing post 2, and be not complete screw state, the plain noodles that removes post 2 and the concave surface contact of arc baffle 5, and the opening part of cylindricality handle 7 bottom from outer barrel stretches out.

It should be noted that: the radian of arc baffle 5 is the same with the radian of removing 2 plain noodles on the post, when removing post 2 and placing on arc baffle 5, two sides of first external screw thread 4 on removing 2 length direction of post offset with the side of 5 length direction both sides of arc baffle, make first external screw thread 4 and the combination of arc baffle 5 form a complete cylindricality body, arc baffle 5 can not consume outer barrel 1 inner space, and then make first external screw thread 4 agree with internal thread groove 3 completely, when rotating cylindricality handle 7 and taking arc baffle 5 at outer barrel 1 internal rotation, under the cooperation of first external screw thread 4 and internal thread groove 3, remove post 2 along arc baffle 5 under rotatory state, the open-top of outer barrel 1 moves down, and then make the expansion piece on the removal post 2 stretch out/the part stretches out outside outer barrel 1.

Further, the expansion piece includes left expansion piece 8 and right expansion piece 9, a left side, right

side expansion piece

8, 9 shape size is the same, a left side, right

side expansion piece

8, 9 is by the arc, the setting is hemisphere shell and sets up the bottom plate 10 at the arc other end in arc one end and constitutes, the diameter of bottom plate 10 is the same with the diameter of arc, arc breach 11 has been seted up on the bottom plate 10, a left side, right side expansion piece 8, the one end after 9 merge forms the spherical end, two bottom plates 10 of the other end merge the back, arc breach 11 on two bottom plates 10 merges and forms through-hole 12, spherical end is located 1 open-top's of outer barrel center department. It should be noted that: the top port of the outer cylinder body 1 can be set to be a curved surface, so that the corners of the port can be prevented from scratching a human body, and the discomfort in sampling can be relieved.

Further, the specific connection mode between the expansion piece and the moving column 2 is as follows: the top of the movable column 2 is provided with a column-shaped groove 13, and one end of the expansion piece, which is provided with the bottom plate 10, is arranged in the column-shaped groove 13, namely the inner diameter of the column-shaped groove 13 is larger than the diameter of the bottom plate 10. In order to ensure that the expansion pieces rotate in the cylindrical groove 13 for a certain angle, namely, the left expansion piece 8 and the right expansion piece 9 are respectively connected in the cylindrical groove 13 in a rotating way. Notches 16 are symmetrically arranged on the inner wall of the cylindrical groove 13, shaft holes 17 are arranged on two side walls corresponding to the notches 16, fixed blocks 18 are arranged on the outer side walls, close to the bottoms of the left and

right expansion pieces

8 and 9, rotating shafts 19 are arranged at two ends of each fixed block 18, at least one rotating shaft 19 is elastically connected with the fixed block 18, and the rotating shafts 19 are matched with the shaft holes 17. It should be noted that: in order to facilitate the insertion of the rotating shaft 19 into the shaft hole 17, the connection between the rotating shaft 19 and the fixing block 18 may be an elastic connection, specifically: be provided with on fixed block 18 and supply 19 one end male grooves of pivot, and through spring coupling between pivot 19 and the groove, through a section distance in with pivot 19 impress fixed block 18 to make pivot 19 comparatively easy insert in shaft hole 17, thereby fix the expansion piece in cylindrical groove 13, the expansion piece is when opening and shutting, thereby left and

right expansion piece

8, 9 realize its opening and shutting through pivot 19 rotation in shaft hole 17.

Further, in order to enable the control assembly to better control the expansion piece to be opened and closed, a limiting groove 14 is formed in the cylindrical groove 13, a cylindrical hole 15 penetrating through the movable column 2 is vertically formed in the movable column 2, and the axis of the cylindrical hole 15 is coincided with the axis of the limiting groove 14 and the axis of the cylindrical groove 13, namely, the axis is coaxially arranged. And the control assembly is disposed within the cylindrical bore 15 and extends into the expansion flap.

The method specifically comprises the following steps: the control assembly includes control lever 20 and the second external screw thread 21 of setting on the 20 outer walls of control lever, the setting of second external screw thread 21 length according to actual need can, can set up on whole control lever 20, also can only set up one section on control lever 20. One end of the control rod 20 is provided with a stop block 22 with a diameter larger than the through hole 12, the stop block 22 is located above the bottom plate 10, the through hole 12 can be blocked, the stop block 22 is prevented from penetrating through the through hole 12, and meanwhile, the stop block 22 abuts against the bottom plate 10, so that the expansion piece is pressed in the cylindrical groove 13 under the action of the stop block 22. The top of the stopper 22 is provided with a sampling element fixing column 23, a fixing groove with an opening at the top is arranged in the fixing column 23, the inner diameter of the fixing groove is gradually reduced from the top of the fixing column 23 to the stopper 22, a cotton swab can be inserted and fixed into the fixing groove, the cotton swab can be inserted when the sampling storage device disclosed by the invention is used, the sampling storage device can also be processed, and particularly the rod part of the cotton swab is inserted into the fixing groove. And in order to increase the stability that the cotton swab inserted in the fixed slot, the preferred rubber of material of fixed column 23 has certain elasticity, and when the cotton swab inserted in the fixed slot, can extrude the pole portion of cotton swab to increase the stability of cotton swab, at this moment, the optional one deck rigid plastic shell that wraps up on the outer wall of fixed column 23, avoid fixed column 23 hardness not enough and make the cotton swab rock/slope because stability is not good in the use. The other end of the control rod 20 passes through the through hole 12, the cylindrical hole 15, the connecting plate 6 and the cylindrical handle 7 in sequence and extends out of the outer cylinder 1, and an adjusting piece for adjusting the opening angles of the left and

right expansion pieces

8 and 9 is rotatably arranged on the control rod 20 and below the stop block 22. In addition, in order to save space, the portion of the control lever 20 extending out of the moving column 2 is provided in the form of a telescopic rod.

Further, the regulating part includes sleeve 24, sleeve 24 cover is established and is provided with the part of second external screw thread 21 on control lever 20, be provided with internal thread 25 in the sleeve 24, make

sleeve

24 and 20 threaded connection of control lever, under the fixed circumstances of sleeve 24, make it stretch into the expansion piece through rotating control lever 20, the symmetry is provided with the stopper 26 of arranging in spacing groove 14 on the lateral wall of sleeve 24, two stoppers 26 correspond a bottom plate 10 respectively, through stopper 26 upwards top bottom plate 10, thereby make left and

right expansion piece

8, 9 rotate round pivot 19, and then open the expansion piece. The limiting block 26 is abutted to the limiting groove 14, the inner diameter of the limiting groove 14 is larger than the aperture of the through hole 12, so that the limiting block 26 can be abutted to the bottom plate 10, and the limiting block 26 and the sleeve 24 are prevented from penetrating through the through hole 12. The outer diameter of the sleeve 24 is smaller than or equal to the aperture of the through hole 12, and the sum of the length of the two limit blocks 26 and the diameter of the sleeve 24 is larger than the aperture of the through hole 12. Of course, the outer diameter of the sleeve 24 is only one embodiment, and the outer diameter of the sleeve 24 is larger than the diameter of the through hole 12, so that the stop block 26 or the sleeve 24 can lift the bottom plate 10.

Furthermore, in order to control the expansion pieces to open at different angles, elastic clamping pieces are symmetrically arranged on the side wall of the sleeve 24 close to the bottom of the sleeve, a plurality of spherical grooves 27 are vertically arranged on the inner wall of the cylindrical hole 15, the spherical grooves 27 are matched with the elastic clamping pieces, guide grooves 28 penetrating through all the spherical grooves 27 are arranged on the inner wall of the cylindrical hole 15, and one end of each guide groove 28 penetrates through the bottom of the limiting groove 14. The elastic clamping piece comprises a groove arranged on the side wall of the sleeve 24, a clamping block 29 is connected in the groove through the elastic piece, and the clamping block 29 and the limiting block 26 are located on the same line. It should be noted that: the guide groove 14 is provided mainly to move the latch 29 in the vertical direction, and to limit the path of the vertical movement of the latch 29 so as to prevent the latch 29 from being disengaged from the spherical groove 27 due to the rotation of the sleeve 24.

In the invention, the top opening of the outer cylinder body 1 is provided with the rubber plug, so that the expansion sheet is prevented from being exposed in the air and being infected with bacteria and the like. When the device is used, the rubber plug is pulled out, the outer cylinder body 1 is aligned to a position of a human body to be sampled, the arc-shaped guide plate 5 drives the moving column 2 to move towards the direction of the top opening of the outer cylinder body 1 in the rotating process by screwing the cylindrical handle 7, and the length of the expansion sheet extending out of the outer cylinder body 1 is controlled according to actual conditions. After the expansion piece reaches the sampling position, the sleeve 24 moves towards the direction of the top opening of the outer cylinder 1 by the force applied to the position of the top of the expansion piece by the control rod 10, the limiting block 26 starts to push against the bottom plate 10, the left and

right expansion pieces

8 and 9 are opened, and the control clamping block 29 is clamped in the spherical grooves 27 with different heights, so that the opening angle of the expansion piece is controlled, the clamping block 29 is clamped in the spherical grooves 27, the sleeve 24 is relatively stabilized in the cylindrical hole 15, at the moment, the control rod 20 is screwed by screwing, under the matching of the second external threads 21 and the internal threads 25, the control rod 20 moves towards the direction of the top opening of the outer cylinder 1 until the head of the cotton swab on the fixing column 23 reaches the sampling position, and at the moment, the secretion is adhered to the cotton swab in the rotating process in a positive and negative rotating mode. Then, the control rod 20 is rotated reversely to make the cotton swab extend into the expansion piece, and then the control rod 20 is pulled to make the limit block 26 arranged in the limit groove 14 to release the limit of the bottom plate 10 until the sleeve 24 is reset; then, the control rod 20 is rotated reversely again until the stop 22 abuts against the bottom plate 10, the expansion pieces are combined, the cotton swab is positioned in the expansion pieces, so that the cotton swab stuck with the secretion is protected, finally, the cylindrical handle 7 is rotated to reset the movable column 2, and at the moment, the rubber plug can be inserted into the top opening of the outer cylinder body 1 again. In the whole sampling process, the cotton swab can not contact with the secretion of the inner wall of the vagina and the vulva microorganisms, the accuracy of the detection result is ensured, and the sampling is simple to operate and can be independently completed by medical workers. After the sample was accomplished, transfer the clinical laboratory with whole sample save set and examine, take out the in-process with cotton swab, only need operate according to above-mentioned mode make cotton swab stretch out outside the expansion piece can.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims

1. The utility model provides a vaginal secretion sample save set, is provided with open-ended outer barrel (1) including inside cavity and both ends, its characterized in that: a movable column (2) capable of moving in a reciprocating manner is arranged in the outer cylinder body (1), a guide assembly for driving the movable column to move in a reciprocating manner along the length direction of the outer cylinder body (1) is arranged between the outer cylinder body (1) and the movable column (2), an expansion piece capable of opening and closing is hinged to the top of the movable column (2), a control assembly for controlling the expansion piece to open and close is arranged in the movable column (2) in a penetrating manner, one end of the control assembly extends into the expansion piece, and the other end of the control assembly extends out of the outer cylinder body (1); remove and be provided with first external screw thread (4) on post (2) outer wall, the direction subassembly includes arc baffle (5), the one end of arc baffle (5) is fixed with connecting plate (6), be fixed with cylindricality handle (7) on the face of connecting plate (6), it places to remove post (2) on arc baffle (5), first external screw thread (4) set up on the semi-lateral of removing post (2), the plain noodles that remove post (2) and the concave surface contact of arc baffle (5), cylindricality handle (7) are stretched out from the opening part of outer barrel (1) bottom.

2. The vaginal secretion sampling and retaining device according to claim 1, wherein: an inner thread groove (3) is formed in the outer cylinder body (1), and the first outer threads (4) are matched with the inner thread groove (3).

3. The vaginal secretion sampling and retaining device according to claim 1, wherein: the expansion piece is including left expansion piece (8) and right expansion piece (9), left and right expansion piece (8, 9) shape size is the same, left and right expansion piece (8, 9) are by the arc, set up and be hemisphere shell and set up bottom plate (10) at the arc other end in arc one end and constitute, arc breach (11) have been seted up on bottom plate (10), one end after left and right expansion piece (8, 9) merge forms spherical end, and the other end merges by two arc breaches and forms through-hole (12), spherical end is located outer barrel (1) open-top's center department.

4. A vaginal secretion sampling and retaining device according to claim 3, wherein: cylindrical groove (13) have been seted up at the top of removal post (2), spacing groove (14) have been seted up in cylindrical groove (13), the vertical cylindrical hole (15) of having seted up on removal post (2), the axis of cylindrical hole (15) and the axis coincidence of spacing groove (14) and cylindrical groove (13), the internal diameter of cylindrical groove (13) is greater than the diameter of bottom plate (10), left and right expansion piece (8, 9) rotate respectively in cylindrical groove (13) and are connected.

5. A vaginal secretion sampling and retaining device according to claim 4, wherein: the symmetry is provided with breach (16) on the inner wall in cylindrical groove (13), be provided with shaft hole (17) on the corresponding both sides wall of breach (16), be provided with fixed block (18) on left and right expansion piece (8, 9), on being close to the lateral wall of its bottom, the both ends of fixed block (18) are provided with pivot (19), at least one of them pivot (19) and fixed block (18) elastic connection, pivot (19) and shaft hole (17) looks adaptation.

6. A vaginal secretion sampling and retaining device according to claim 4, wherein: the control assembly comprises a control rod (20) and a second external thread (21) arranged on the outer wall of the control rod (20), a check block (22) with the diameter larger than that of the through hole (12) is arranged at one end of the control rod (20), a sampling piece fixing column (23) is arranged at the top of the check block (22), the other end of the control rod (20) extends out of the outer barrel body (1), the check block (22) is located above the bottom plate (10), and an adjusting piece for adjusting the opening angle of the left expansion piece and the right expansion piece (8 and 9) is arranged on the control rod (20) and below the check block (22) in a rotating mode.

7. A vaginal secretion sampling and retaining device according to claim 6, wherein: the adjusting part comprises a sleeve (24), an internal thread (25) is arranged in the sleeve (24), the sleeve (24) is in threaded connection with the control rod (20), limiting blocks (26) arranged in a limiting groove (14) are symmetrically arranged on the outer side wall of the sleeve (24), the limiting blocks (26) correspond to a bottom plate (10) respectively, the outer diameter of the sleeve (24) is less than or equal to the aperture of the through hole (12), and the sum of the length of the limiting blocks (26) and the diameter of the sleeve (24) is greater than the aperture of the through hole (12).

8. The vaginal secretion sampling and retaining device according to claim 7, wherein: the symmetry is provided with the elasticity fastener on sleeve (24) is close to the lateral wall of its bottom, vertically on the inner wall in cylindricality hole (15) be provided with a plurality of spherical groove (27), spherical groove (27) and elasticity fastener adaptation, be provided with guide way (28) that run through all spherical groove (27) on the inner wall in cylindricality hole (15), the one end of guide way (28) run through to the bottom of spacing groove (14).

9. The vaginal secretion sampling and retaining device according to claim 8, wherein: the elastic clamping piece comprises a groove arranged on the side wall of the sleeve (24), a clamping block (29) is connected in the groove through an elastic piece, and the clamping block (29) and the limiting block (26) are located on the same straight line.