Adjustable cervical plug device and hysteroscope with same

Abstract

The utility model discloses an adjustable cervical plug device. The adjustable cervical plug device comprises a plug head and a connecting adjusting piece, wherein the plug head is internally provided with a penetrating channel in a penetrating manner, and the penetrating channel is used for allowing an inserting part of a hysteroscope to penetrate through; the connecting adjusting piece is used for sleeving the inserting part and is adjustable in position; the penetrating channels are exposed out of the head end and the tail end of the plug respectively, the connecting adjusting piece is arranged opposite to the tail end of the plug in the penetrating direction of the penetrating channels, and the connecting adjusting piece is further connected with the plug. Therefore, the position of the plug head can be adjusted on the insertion portion along with the connection adjusting piece, the application range of the adjustable cervical plug device is enlarged, and the effect that a doctor observes images is ensured. In addition, the utility model further discloses a hysteroscope comprising the adjustable cervical plug device, a handle and an insertion part.

Description

Technical Field

[0001] This utility model relates to a medical device, and more particularly to an adjustable cervical plug device and a hysteroscope having the adjustable cervical plug device. Background Technology

[0002] As is well known, hysteroscopy is a minimally invasive gynecological diagnostic and therapeutic instrument used for the diagnosis, treatment, and follow-up of lesions within the uterine cavity. Hysteroscopy not only determines the location, size, appearance, and extent of lesions, but also allows for detailed observation of the tissue structure on the lesion's surface, and enables biopsy or targeted curettage under direct vision, greatly improving the accuracy of diagnosing intrauterine diseases and updating, developing, and compensating for the shortcomings of traditional diagnostic and treatment methods. For most patients suitable for diagnostic curettage, it is more reasonable and effective to first perform hysteroscopy to clarify the location of the lesion before performing biopsy or curettage.

[0003] In order to prevent the distension fluid from leaking out of the cervix during the examination, which would cause pressure leakage, resulting in poor distension and affecting the doctor's ability to observe the images, the current practice is to fix a cervical plug to the insertion part of the hysteroscope by welding or gluing. The cervical plug blocks the cervical opening, thereby preventing the distension fluid from leaking out of the cervix.

[0004] However, since the cervical plug is fixed to the insertion part by welding or gluing, the insertion part of the hysteroscope must be inserted into the uterine cavity to the same depth each time. Otherwise, the cervical plug will not be able to effectively block the cervix. Because the insertion depth is the same each time, the insertion part of the existing hysteroscope cannot be adjusted within a certain range in the uterine cavity, which affects the doctor's ability to observe the images.

[0005] Therefore, there is an urgent need for an adjustable cervical plug device and a hysteroscope equipped with the adjustable cervical plug device to overcome one or more of the above-mentioned defects. Utility Model Content

[0006] One objective of this invention is to provide an adjustable cervical plug device, so that the position of the plug can be adjusted, thereby expanding the scope of application and ensuring the effectiveness of doctors' image observation.

[0007] Another objective of this invention is to provide a hysteroscope with an adjustable endoscope tip, thereby expanding its applicability and ensuring the effectiveness of the doctor's image observation.

[0008] To achieve the above objectives, the adjustable cervical plug device of this utility model includes a plug head and a connecting adjustment member. The plug head has a through-passage channel for the insertion portion of a hysteroscope to pass through, with the through-passage channel protruding from both the head and tail ends of the plug head. The position adjustment member is used to fit over the insertion portion and is position-adjustable. The connecting adjustment member is arranged opposite to the tail end of the plug head in the through-passage direction and is also connected to the plug head.

[0009] Compared with the prior art, by means of a connecting adjustment member that is fitted onto the insertion part, is positionally adjustable, and is arranged opposite to and connected to the end of the plug in the through-channel direction, the plug can be adjusted in position on the insertion part along with the connecting adjustment member, thereby expanding the applicability of the adjustable cervical plug device of this utility model and ensuring the effect of doctors observing images.

[0010] Preferably, the adjustable cervical plug device of this utility model further includes a release operation member that can be rotated to switch between a release position and a locking position. The connecting adjustment member has an outer sleeve channel for the insertion part to pass through and a penetration channel communicating with the outer sleeve channel. The release operation member is rotatably mounted in the penetration channel. When the release operation member is switched to the locking position, it locks with the insertion part. When the release operation member is switched to the release position, it releases with the insertion part.

[0011] Preferably, the adjustable cervical plug device of this utility model further includes a hollow screw, the hollow structure forming an outer sleeve channel for being fixedly fitted onto the insertion part, the screw being arranged opposite to the tail end of the plug in the through-channel direction, and the connecting adjustment member having a threaded structure that engages with the screw thread.

[0012] Preferably, the adjustable cervical plug device of this utility model further includes a spring extending along the through-passage direction, the internal space of the spring being arranged opposite to the through-passage direction, the head end of the spring being fixedly connected to the tail end of the plug, and the tail end of the spring being fixedly connected to the connecting adjustment member; or, the tail end of the plug is fixed with a guide rod extending along the through-passage direction, the guide rod slidably passing through the connecting adjustment member and offset from the through-passage direction on the side of the plug, the spring being sleeved in the guide rod, the head end of the spring abutting against the tail end of the plug, and the tail end of the spring abutting against the connecting adjustment member; the plug can reciprocate by means of the elastic deformation of the head end of the spring moving closer to or away from the tail end of the spring.

[0013] Preferably, the guide rods are a plurality of spaced-apart rods arranged together around the centerline of the passageway; each guide rod is fitted with the spring.

[0014] Preferably, the adjustable cervical plug device of this utility model further includes a flexible protective outer shell, the head end of which is fixedly connected to the tail end of the plug head, and the tail end of which is fixedly connected to the connecting adjustment member; the spring fixedly connected to the tail end of the plug head is located in the internal space of the protective outer shell; or, the guide rod and the spring sleeved on the guide rod are both located in the internal space of the protective outer shell.

[0015] Preferably, the end of the plug is provided with a first recessed annular groove arranged around the center line of the through channel, and the connecting adjustment member is provided with a second recessed annular groove accordingly. The head end of the spring is embedded in the first recessed annular groove, and the tail end of the spring is embedded in the second recessed annular groove.

[0016] Preferably, the adjustable cervical plug device of this utility model further includes a sealing sleeve that is threadedly connected to the tail end of the plug head, and the bottom of the sealing sleeve has a mating hole that communicates with the internal space of the sealing sleeve for the insertion part to pass through in a sealed manner.

[0017] Preferably, the plug is in the shape of a frustum or a pyramid.

[0018] Preferably, the bottom of the cylinder includes a flat annular portion and an arc-shaped raised annular portion extending from the inner side of the annular portion toward the center line of the annular portion, the raised annular portion defining the mating hole.

[0019] Preferably, the sealing sleeve has an internal thread at a position away from the bottom of the cylinder, and the middle of the tail end of the plug extends into the sealing sleeve with an external thread. The extension protrusion is spaced apart from the bottom of the cylinder by a predetermined distance, and the through channel also passes through the extension protrusion.

[0020] To achieve the above objectives, the hysteroscope of this utility model includes a handle for the user to hold and operate, a long strip-shaped insertion part, and the aforementioned adjustable cervical plug device. The head end of the insertion part extends out of the plug head from the through-channel and is suspended in the air. The tail end of the insertion part passes through the connecting adjustment member and is assembled and connected to the handle.

[0021] Compared with the prior art, by means of a connecting adjustment member that is fitted onto the insertion part, is positionally adjustable, and is arranged opposite to and connected to the end of the plug in the through-channel direction, the plug can be adjusted in position on the insertion part along with the connecting adjustment member, thereby expanding the applicability of the adjustable cervical plug device of this utility model and ensuring the effect of doctors observing images. Attached Figure Description

[0022] Figure 1 This is a three-dimensional view of the hysteroscope of the first embodiment of this utility model.

[0023] Figure 2 yes Figure 1 The diagram shows the state of the hysteroscope as it separates the protective sheath.

[0024] Figure 3 yes Figure 1 A three-dimensional diagram of an adjustable cervical plug device.

[0025] Figure 4 yes Figure 3 The plan view of the adjustable cervical plug device shown is taken in the direction indicated by arrow A.

[0026] Figure 5 It is along Figure 4 Internal view of the section cut along the BB line.

[0027] Figure 6 yes Figure 5 Internal view after concealing the protective outer casing, springs, and connecting blocks.

[0028] Figure 7 yes Figure 3 An exploded three-dimensional view of the adjustable cervical plug device shown.

[0029] Figure 8 yes Figure 7 An exploded view of the 3D structure from another angle.

[0030] Figure 9 Yes Figure 5 An internal diagram showing deformation.

[0031] Figure 10 This is a three-dimensional view of the hysteroscope according to the second embodiment of this utility model.

[0032] Figure 11 yes Figure 10 The diagram shows the state of the hysteroscope as it separates the protective sheath.

[0033] Figure 12 yes Figure 10 A 3D view of the adjustable cervical plug device hidden behind the protective sheath.

[0034] Figure 13 yes Figure 12 A three-dimensional exploded view.

[0035] Figure 14 yes Figure 12 A stereoscopic view from another angle.

[0036] Figure 15 yes Figure 14 A three-dimensional exploded view. Detailed Implementation

[0037] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to specific implementation examples and accompanying drawings, and the technical solutions of this utility model will be explained. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this utility model. However, this utility model can be implemented in many ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below. Embodiments of this utility model will now be described with reference to the accompanying drawings, in which similar element reference numerals represent similar elements.

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] Please see Figure 1 and Figure 2 The hysteroscope 100 of the first embodiment includes an adjustable cervical plug device 10, a handle 20 for the user to hold and operate, and an elongated insertion part 30. The tip 31 of the insertion part 30 extends through the passage 111 described below (see...). Figure 3 ) protrudes from the plug 11 described below (see Figure 3 The insertion part 30 is suspended in mid-air. The tail end 32 of the insertion part 30 passes through the connecting adjustment member 12 and is assembled and connected to the handle 20, which provides support for the insertion part 30. Since the specific structures of the insertion part 30 and the handle 20 are well known in the art, they will not be described in detail here.

[0040] Combined Figures 3 to 5As an example, the adjustable cervical plug device 10 includes a plug head 11 and a connecting adjustment member 12. The plug head 11 has a through-passage channel 111 for the insertion portion 30 to pass through. The through-passage channel 111 protrudes from the head end 112 and the tail end 113 of the plug head 11. Optionally, at... Figure 4 In the example shown, channel 111 is a circular channel to facilitate its manufacturing process. Obviously, channel 111 can be of other shapes depending on actual needs, therefore, it is not considered a standard example. Figure 4 The above is for reference only; additionally, in conjunction with... Figures 1 to 8 As an example, the plug 11 is frustoconical in shape, which ensures the reliability of the plug 11 in sealing the cervix and facilitates the manufacturing and processing of the plug 11. Obviously, depending on actual needs, the shape of the plug 11 can also be frustum-shaped, etc., so it is not considered... Figures 1 to 8 The above is the limit.

[0041] The position adjustment member 12 is fitted over the insertion part 30 and is position-adjustable to meet the operator's need for flexible adjustment according to actual needs. The connecting adjustment member 12 is arranged opposite to the tail end 113 of the plug 11 in the through-path direction (see the direction indicated by arrow A and the opposite direction) of the channel 111, to meet the need for the connecting adjustment member 12 and the head end 112 of the plug 11 to face away from each other. The connecting adjustment member 12 is also connected to the plug 11 to meet the need for the plug 11 to slide and adjust on the insertion part 30 together with the connecting adjustment member 12. The specific implementation method for connecting the connecting adjustment member 12 and the plug 11 is detailed below:

[0042] like Figure 2 and Figure 5 As shown, as an example, the adjustable cervical plug device 10 also includes a spring 15 extending along the through-channel 111. The internal space 151 of the spring 15 is also arranged opposite to the through-channel 111 in the through-channel 111 direction. At this time, the head end 152 of the spring 15 is fixedly connected to the tail end 113 of the plug head 11, and the tail end 153 of the spring 15 is fixedly connected to the connecting adjustment member 12. (See diagram). Figure 5 As shown; this design allows the plug 11 to slide back and forth by elastically deforming the head end 152 of the spring 15 towards or away from the tail end 153 of the spring 15. This allows the plug 11 to not only slide and adjust on the insertion part 30 following the connecting adjustment member 12, but also to slide and extend towards or away from the connecting adjustment member 12, further improving the applicability of the adjustable cervical plug device 10 and making the plug 11 flexible. Specifically, in conjunction with... Figure 5 , Figure 7 and Figure 8 As an example, the tail end 113 of the plug 11 has an opening around the center line passing through the channel 111 (see [reference]). Figure 5 The first recessed annular groove 114 is arranged along the center line of the spring 15, and the connecting adjustment member 12 is correspondingly provided with a second recessed annular groove 123. The head end 152 of the spring 15 is embedded in the first recessed annular groove 114, and the tail end 153 of the spring 15 is embedded in the second recessed annular groove 123. This design makes the fixation between the spring 15 and the plug 11 and the connecting adjustment member 12 more reliable, and also ensures the sensitivity, stability and smoothness of the plug 11 sliding back and forth relative to the connecting adjustment member 12 with the spring 15. Obviously, according to actual needs, the fixing method of the spring 15 to the tail end 113 of the plug 11 and the connecting adjustment member 12 can also be other, so it is not considered as a separate issue. Figure 5 , Figure 7 and Figure 8 The above is the limit.

[0043] like Figures 3 to 5 and Figures 7 to 8 As shown, as an example, the adjustable cervical plug device 10 also includes a flexible protective outer casing 17. The head end 171 of the protective outer casing 17 is fixedly connected to the tail end 113 of the plug head 11, and the tail end 172 of the protective outer casing 17 is fixedly connected to the connecting adjustment member 12. At this time, the spring 12, which is fixedly connected to the tail end 113 of the plug head 11, is located in the internal space 173 of the protective outer casing 17. Therefore, by means of the flexible protective outer casing 17, the spring 15 is effectively prevented from pinching the human body during elastic deformation, thereby providing better protection.

[0044] like Figures 5 to 8 As shown, as an example, the adjustable cervical plug device 10 also includes a sealing sleeve 18 threadedly connected to the tail end 113 of the plug head 11. The bottom 18a of the sealing sleeve 18 has a mating hole 18c communicating with the internal space 18b of the sealing sleeve 18 for the insertion part 30 to pass through in a sealed manner. Therefore, by means of the sealing sleeve 18, when intrauterine fluid can flow from the gap between the passage 111 and the insertion part 30 towards the spring 15, the sealing sleeve 18 prevents the intrauterine fluid from leaking towards the spring 15, and also facilitates the installation and removal of the sealing sleeve 18 from the insertion part 30 and the plug head 11 respectively. Specifically, in Figure 5 and Figure 6 As an example, the bottom 18a of the cylinder includes a flat annular portion 181 and a centerline extending from the inner side of the annular portion 181 toward the centerline near the annular portion 181 (see also...). Figure 5 An arc-shaped, raised ring 182 extends from the center line of the insertion part 30, defining the mating hole 18c. This ensures that the raised ring 182 remains tightly closed to the insertion part 30, thereby further improving the sealing effect. Additionally, in... Figure 5 and Figure 6In this example, the sealing sleeve 18 has an internal thread 18d located away from the bottom 18a. An extension protrusion 115 extends from the middle of the tail end 113 of the plug 11, penetrating into the sealing sleeve 18. The extension protrusion 115 has an external thread 116, which, through the engagement of the external thread 116 with the internal thread 18d, further improves the ease of assembly and disassembly of the sealing sleeve 18 and the tail end 113 of the plug 11. Furthermore, in... Figure 5 and Figure 6 In this example, the extension protrusion 115 is spaced apart from the bottom 18a of the sleeve by a predetermined distance, so that the internal space 18b of the sealing sleeve 18 is not completely occupied by the extension protrusion 115. Therefore, the space in the internal space 18b of the sealing sleeve 18 that is not occupied by the extension protrusion 115 can buffer the uterine fluid entering from the gap between the through-channel 111 and the insertion part 30. It should be noted that when the extension protrusion 115 extends from the middle of the tail end 113 of the plug 11, the through-channel 111 also passes through the extension protrusion 115 to meet the requirement that the insertion part 30 passes through the extension protrusion 115.

[0045] Combination Figures 3 to 5 and Figures 7 to 8 As an example, the adjustable cervical plug device 10 also includes a rotatable position corresponding to an unlocked position and a locked position (see [link to device 10]). Figure 5 The release mechanism 13, which switches between the locking and unlocking positions, has an outer sleeve channel 121 through which the insertion part 30 passes and a penetration channel 122 communicating with the outer sleeve channel 121 on the connecting adjustment part 12. The release mechanism 13 is rotatably mounted in the penetration channel 122. When the release mechanism 13 is switched to the locked position, it locks with the insertion part 30; when the release mechanism 13 is switched to the unlocked position, it unlocks with the insertion part 30. Therefore, the release mechanism 13 allows the operator to flexibly adjust the position of the adjustable cervical plug device 10 according to actual needs, for example, in... Figure 5 In this configuration, when the operator rotates the release mechanism 13, causing it to slide upwards, the upwardly sliding release mechanism 13 disengages from the insertion portion 30, thus unlocking the device. Conversely, when the operator rotates the release mechanism 13, causing it to slide downwards, the downwardly sliding release mechanism 13 presses against the insertion portion 30, thus locking the device. For example, the release mechanism 13 can be a screw to simplify its structure; obviously, depending on actual needs, the release mechanism 13 can also be a structure well-known in the art.

[0046] Please see Figure 9 It is a Figure 5 The specific transformations are as follows:

[0047] At Figure 9In this configuration, a guide rod 16 is fixed to the tail end 113 of the plug 11, extending along the through-channel 111. The guide rod 16 slidably passes through the connecting adjustment member 12' and is offset from the through-channel 111 on the side of the plug 11. At this time, a spring 15 is sleeved in the guide rod 16, with the head end 152 of the spring 15 abutting against the tail end 113 of the plug 11 and the tail end 153 of the spring 15 abutting against the connecting adjustment member 12'. (See attached diagram). Figure 9 As shown, this design more effectively improves the smoothness, fluidity, and sensitivity of the reciprocating sliding of the plug 11. Specifically, in Figure 9 In this example, the guide rods 16 are multiple, spaced apart from each other and arranged around the centerline passing through the channel 111, with each guide rod 16 covered by a spring 15; this further improves the smoothness, ease, and sensitivity of the reciprocating sliding of the plug 11. It should be noted that in the case of the adjustable cervical plug device 10 including a protective outer casing 17, both the guide rods 16 and the springs 15 covered by the guide rods 16 are located within the internal space 173 of the protective outer casing 17, as shown in the diagram. Figure 9 As shown.

[0048] And at Figure 5 Since it does not have a guide rod 16, the head end 152 of the spring 15 is fixedly connected to the tail end 113 of the plug 11, and the tail end 153 of the spring 15 is fixedly connected to the connecting adjustment member 12.

[0049] Apart from the differences mentioned above, the two are the same, so they will not be repeated here.

[0050] Please see Figures 10 to 15 The hysteroscope 100' of the second embodiment has a basically the same structure as the hysteroscope 100 of the first embodiment, the difference being that the structure for achieving position adjustment is different, as detailed below:

[0051] In the hysteroscope 100' of the second embodiment, the adjustable cervical plug device 10' further includes a hollow lead screw 14. The hollow structure forms an outer sleeve channel 141 for being fixedly fitted onto the insertion part 30. The lead screw 14 is also arranged opposite to the tail end 113 of the plug head 11 in the through direction of the channel 111. Correspondingly, the interior of the connecting adjustment member 12' is provided with a threaded structure 124 that is threaded with the lead screw 14. Therefore, during the adjustment process, the connecting adjustment member 12' can be rotated relative to the lead screw 14. Since the position adjustment of the connecting adjustment member 12' relative to the insertion part 30 is achieved by the cooperation of the lead screw 14 and the threaded structure 124, the position adjustment is more accurate and reliable.

[0052] In the hysteroscope 100 of the first embodiment, the position of the adjustable cervical plug device 10 on the insertion part 30 is adjusted by switching the release operation member 13 between the release position and the lock position. Therefore, the connecting adjustment member 12 needs to be provided with an outer sleeve channel 121 and an insertion channel 122.

[0053] Apart from the differences mentioned above, the two are the same, so they will not be discussed in detail here.

[0054] Compared with the prior art, by means of the connecting adjustment member 12 (12') which is fitted onto the insertion part 30, is positionally adjustable, and is arranged opposite to the tail end 113 of the plug 11 in the through direction of the passage 111 and connected to the plug 11, the plug 11 can be adjusted in position on the insertion part 30 with the connecting adjustment member 12 (12'), thereby expanding the applicability of the hysteroscope 100 (100') of this utility model and ensuring the effect of doctors observing images.

[0055] It is worth noting that, although Figure 9 The position adjustment component 12 shown is Figure 5 The position adjustment component 12 has the same structure. Obviously, depending on the actual needs, it can also be adjusted... Figure 9 The position adjustment member 12 is made in the structure of the position adjustment member 12' in the hysteroscope 100' of the second embodiment, so as to... Figure 9 When the position adjustment component 12 is replaced by the position adjustment component 12', it can be used in conjunction with the lead screw 14.

[0056] It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, the embodiments disclosed above are merely preferred embodiments of this utility model and should not be construed as limiting the scope of this utility model. Therefore, equivalent variations made within the scope of the claims of this utility model are still within the scope of this utility model.

Claims

1. An adjustable cervical plug device comprising a plug head, a through passage for insertion of a hysteroscope therethrough being formed through the inside of the plug head, the through passage being exposed from a head end and a tail end of the plug head, respectively, characterized in that, The adjustable cervical plug device further comprises a connecting adjustment member for sleeving on the insertion part and being adjustable in position, the connecting adjustment member is arranged opposite to the tail end of the plug head in the penetrating direction of the through channel, and the connecting adjustment member is further connected with the plug head.

2. An adjustable pessary device according to claim 1, wherein, The device further comprises a release lock operation member which can be operated to rotate and correspondingly switch between a release lock position and a lock position, the connecting adjustment member is provided with a sleeving channel for the insertion part to pass through and a penetrating channel communicated with the sleeving channel, and the release lock operation member is rotatably assembled in the penetrating channel; the release lock operation member is locked with the insertion part when switched to the lock position, and the release lock operation member is released from the insertion part when switched to the release lock position.

3. The adjustable pessary device of claim 1, wherein, The device further comprises a hollow screw rod, the hollow structure forms a sleeving channel for fixedly sleeving on the insertion part, and the screw rod is further arranged opposite to the tail end of the plug head in the penetrating direction of the through channel; the inside of the connecting adjustment member is provided with a threaded structure threadedly matched with the screw rod.

4. The adjustable pessary device of claim 1, wherein, The device further comprises a spring extending in the penetrating direction of the through channel, the inside space of the spring is further arranged opposite to the through channel in the penetrating direction of the through channel, the head end of the spring is fixedly connected with the tail end of the plug head, and the tail end of the spring is fixedly connected with the connecting adjustment member; or, the tail end of the plug head is fixedly provided with a guide rod arranged to extend in the penetrating direction of the through channel, the guide rod is slidably penetrated through the connecting adjustment member and arranged to be staggered with the through channel in the lateral direction of the plug head, the spring is sleeved in the guide rod, the head end of the spring is abutted with the tail end of the plug head, and the tail end of the spring is abutted with the connecting adjustment member; the plug head can reciprocally slide by the elastic deformation of the head end of the spring to approach or move away from the tail end of the spring.

5. An adjustable pessary device according to claim 4, wherein, The guide rods are a plurality of guide rods arranged to be spaced apart from each other and collectively arranged around the center line of the through channel; the spring is sleeved on each guide rod.

6. The adjustable pessary device of claim 4, wherein, The device further comprises a flexible protective sleeve body, the head end of the protective sleeve body is fixedly connected with the tail end of the plug head, and the tail end of the protective sleeve body is fixedly connected with the connecting adjustment member; the spring fixedly connected with the tail end of the plug head is located in the inside space of the protective sleeve body; or, the guide rod and the spring sleeved on the guide rod are both located in the inside space of the protective sleeve body.

7. The adjustable pessary device of claim 4, wherein, The tail end of the plug head is provided with a first embedded recessed ring groove arranged around the center line of the through channel, the connecting adjustment member is correspondingly provided with a second embedded recessed ring groove, the head end of the spring is embedded in the first embedded recessed ring groove, and the tail end of the spring is embedded in the second embedded recessed ring groove.

8. The adjustable pessary device of claim 1, wherein, The device further comprises a sealing cylinder sleeve threadedly connected with the tail end of the plug head, the bottom of the sealing cylinder sleeve is provided with a matching hole communicated with the inside space of the sealing cylinder sleeve for the insertion part to seal through; the plug head is in the shape of a truncated cone or a truncated prism.

9. An adjustable pessary device according to claim 8, wherein, The bottom of the barrel comprises a flat annular part and an arc-shaped raised ring part extending from the inner side of the annular part towards the center line of the annular part, the raised ring part defining the fitting hole; the sealing barrel sleeve is provided with internal threads at a position away from the barrel bottom, the middle part of the tail end of the plug head extends a protruding extension, the extension is provided with external threads, the extension is separated from the barrel bottom by a preset distance, and the through channel also penetrates the extension.

10. A hysteroscope comprising a handle for a user to hold and operate and an elongated insertion portion, characterized in that, The hysteroscope further comprises the adjustable cervical plug device according to any one of claims 1 to 9, the head end of the insertion part extends out of the plug head from the through channel and is arranged in a suspended manner, and the tail end of the insertion part penetrates the connecting adjustment member and is assembled with the handle.

Images