Cervical plug device and hysteroscope with same
By designing a sliding cervical plug device, the problems of poor observation effect and leakage of distended fluid caused by fixing the depth of the hysteroscopic insertion part were solved, achieving flexible plugging and sealing effect, and expanding the scope of application.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-03-31
AI Technical Summary
The existing method of fixing the hysteroscopic insertion part and the cervical plug results in a fixed insertion depth each time, which cannot be adjusted, affecting the observation effect and causing leakage of distension fluid, and cannot effectively block the cervical opening.
A cervical plug device was designed, comprising a plug head and a spring. The plug head can slide within a certain range through the elastic deformation of the spring to achieve a flexible plugging effect. Combined with a guide rod and a protective outer shell, the flexibility and sealing of the plug head are ensured.
This expands the applicability of cervical plugs, improves the plugging effect, ensures the stability and sealing of hysteroscopic observation, and prevents leakage of distension fluid.
Smart Images
Figure CN224055973U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a medical device, and more particularly to a cervical plug device and a hysteroscope having the 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 welded or glued to the insertion part, the insertion depth of the hysteroscope into the uterine cavity must be the same each time. Otherwise, the cervical plug cannot effectively block the cervical opening. Because the insertion depth into the uterine cavity is the same each time, the insertion depth 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 a cervical plug device and a hysteroscope equipped with the 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 a cervical plug device that allows the plug head to slide back and forth within a certain range, thereby expanding its applicability and providing a flexible plugging effect.
[0007] Another objective of this invention is to provide a hysteroscope that allows the plug to slide back and forth within a certain range, thereby expanding its applicability and providing a flexible plugging effect.
[0008] To achieve the above objectives, the cervical plug device of this utility model includes a plug head and a spring. The plug head has a through-passage channel for the insertion part of a hysteroscope to pass through, and the through-passage channel is exposed at both the head end and the tail end of the plug head; the spring extends along the through-passage channel, and the head end of the spring is connected to the tail end of the plug head, and the plug head can reciprocate by elastically deforming the head end of the spring towards or away from the tail end of the spring.
[0009] Compared with the prior art, because the spring extends along the through-channel direction and the head end of the spring is connected to the tail end of the plug, and the plug can slide back and forth by the elastic deformation of the head end of the spring moving closer to or away from the tail end of the spring, this design allows the plug to slide back and forth within a certain range. On the one hand, it satisfies the adjustment of the insertion part within a certain range in the uterine cavity, expanding the application range of the cervical plug device of this utility model. On the other hand, it makes the plug have a flexible plugging effect, improving the plugging effect.
[0010] Preferably, the head end of the spring is fixedly connected to the tail end of the plug, and the through-channel is arranged opposite to the internal space of the spring in its through-direction; or, the tail end of the plug is fixed with a guide rod extending along the through-direction of the through-channel, the guide rod is arranged offset from the through-channel in the lateral direction of the plug, the spring is sleeved in the guide rod, and the head end of the spring abuts against the tail end of the plug.
[0011] 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.
[0012] Preferably, the cervical plug device of this utility model further includes a connecting block for assembly and connection with the insertion part, wherein the connecting block has a through hole through which the insertion part passes; the tail end of a spring arranged opposite to the through hole is fixedly connected to the connecting block; or, the guide rod is slidably inserted into the connecting block, and the tail end of a spring sleeved on the guide rod abuts against the connecting block.
[0013] Preferably, the 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 block; 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.
[0014] Preferably, the end of the plug is provided with a first recessed annular groove arranged around the center line of the through channel, the connecting block is provided with a second recessed annular groove, 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.
[0015] Preferably, the 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; 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.
[0016] Preferably, the 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 cervical plug device. The tail end of the insertion part is assembled and connected to the handle, and the head end of the insertion part extends out of the through-channel from the plug and is suspended in the air.
[0021] Compared with the prior art, because the spring extends along the through-channel direction and the head end of the spring is connected to the tail end of the plug, and the plug can slide back and forth by the elastic deformation of the head end of the spring moving closer to or away from the tail end of the spring, this design allows the plug to slide back and forth within a certain range. On the one hand, it satisfies the adjustment of the insertion part within a certain range in the uterine cavity, expanding the application range of the cervical plug device of this utility model. On the other hand, it makes the plug have a flexible plugging effect, improving the plugging effect. Attached Figure Description
[0022] Figure 1 This is a three-dimensional view of the hysteroscope 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 This is a perspective view of the cervical plug device of this utility model.
[0025] Figure 4 yes Figure 3 The cervical plug device shown is viewed 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 diagram of the 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. Detailed Implementation
[0031] 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 other 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.
[0032] 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.
[0033] Please see Figure 1 and Figure 2 The hysteroscope 100 of this utility model includes a cervical plug device 10, a handle 20 for the user to hold and operate, and an elongated insertion part 30. The tail end 31 of the insertion part 30 is assembled and connected to the handle 20, and the handle 20 provides support for the insertion part 30. The head end 32 of the insertion part 30 passes through the passage 111 described below (see Figure 3 ) protrudes from the plug 11 described below (see Figure 3 The insert 30 is suspended in the air to allow the plug 11 to block the cervix during insertion into the uterine cavity. Since the specific structures of the insert 30 and the handle 20 are well known in the art, they will not be described in detail here.
[0034] Combined Figures 3 to 5 As an example, the cervical plug device 100 includes a plug head 11, a spring 12, and a connecting block 14. 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, it is... Figure 4 In the example shown, channel 111 is a circular channel to facilitate its manufacturing process. Obviously, depending on actual needs, channel 111 can also be of other shapes. 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.
[0035] Spring 12 extends along the through-passage direction of channel 11 (see the direction indicated by arrow A and the opposite direction). The head end 121 of spring 12 is connected to the tail end 113 of plug 11. Plug 11 can reciprocate by elastically deforming its head end 121 towards or away from the tail end 122 of spring 12, thus satisfying the need for plug 11 to be adjustable within a certain range. Optionally, in... Figure 5 In this example, the head end 121 of the spring 12 is fixedly connected to the tail end 113 of the plug 11 to better meet the need for the plug 11 to follow the movement of the spring 12. At this time, the passage 111 is also arranged opposite to the internal space 123 of the spring 12 in its penetrating direction, as shown in the figure. Figure 5 As shown; obviously, according to actual needs, the connection relationship between the head end 121 of the spring 12 and the tail end 113 of the plug 11, as well as the relationship between the passage 111 and the internal space 123 of the spring 12, are also visible. Figure 9 As shown, therefore not Figure 8 The above is the limit.
[0036] The connecting block 14 is used for assembly and connection with the insertion part 30, and the insertion part 30 provides support for the connecting block 14. A through hole 141 is provided inside the connecting block 14 for the insertion part 30 to pass through, so that the connecting block 14 is fixedly fitted onto the insertion part 30 via the through hole 141. At this time, the tail end 122 of the spring 12, which is arranged opposite to the through channel 111, is fixedly connected to the connecting block 14, as shown in the diagram. Figure 5 As shown; therefore, by fixing the connecting block 14 to the tail end 122 of the spring 12 and fixing the plug 11 to the head end 121 of the spring 12, the cervical plug device 10 and the insertion part 30 are made into independent structures. Then, by fixing the connecting block 14 to the insertion part 30, the purpose of fixing the cervical plug device 10 and the insertion part 30 is achieved. More specifically, as follows:
[0037] like Figures 3 to 5 and Figures 7 to 8 As shown, as an example, the cervical plug device 10 also includes a flexible protective outer casing 15. The head end 151 of the protective outer casing 15 is fixedly connected to the tail end 113 of the plug head 11, and the tail end 152 of the protective outer casing 15 is fixedly connected to the connecting block 14. 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 153 of the protective outer casing 15. Therefore, the flexible protective outer casing 15 effectively prevents the spring 12 from pinching the human body during elastic deformation, thus providing better protection. Furthermore, regarding... 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 also...). Figure 5The first recessed annular groove 114 is arranged along the center line of the spring 12, and the connecting block 14 is correspondingly provided with a second recessed annular groove 142. The head end 121 of the spring 12 is embedded in the first recessed annular groove 114, and the tail end 122 of the spring 12 is embedded in the second recessed annular groove 142. This design makes the fixation between the spring 12 and the plug 11 and the connecting block 14 more reliable, and also ensures the sensitivity, stability and smoothness of the plug 11 sliding back and forth relative to the connecting block 14 with the spring 12.
[0038] like Figures 5 to 8 As shown, as an example, the cervical plug device 10 also includes a sealing sleeve 16 threadedly connected to the tail end 113 of the plug head 11. The bottom 16a of the sealing sleeve 16 has a mating hole 164 communicating with the internal space 163 of the sealing sleeve 16 for the insertion part 30 to pass through in a sealed manner. Therefore, by means of the sealing sleeve 16, when intrauterine fluid flows from the gap between the passage 111 and the insertion part 30 towards the spring 12, the sealing sleeve 16 prevents the intrauterine fluid from leaking towards the spring 12, and also facilitates the assembly and disassembly of the sealing sleeve 16 with the insertion part 30 and the plug head 11 respectively. Specifically, in Figure 5 and Figure 6 As an example, the bottom 16a of the cylinder includes a flat annular portion 161 and a centerline extending from the inner side of the annular portion 161 toward the centerline near the annular portion 161 (see also...). Figure 5 An arc-shaped, raised ring 162 extends from the center line of the insertion part 30, defining the mating hole 163. This ensures that the raised ring 162 remains tightly closed to the insertion part 30, thereby further improving the sealing effect. Additionally, in... Figure 5 and Figure 6 In this example, the sealing sleeve 16 has an internal thread 165 located away from the bottom 16a. An extension protrusion 115 extends from the middle of the tail end 113 of the plug 11, penetrating into the sealing sleeve 16. The extension protrusion 115 has an external thread 116. The engagement of the external thread 116 with the internal thread 165 further improves the ease of assembly and disassembly of the sealing sleeve 16 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 16a of the sleeve by a predetermined distance, so that the internal space 161 of the sealing sleeve 16 is not completely occupied by the extension protrusion 115. Therefore, the space in the internal space 161 of the sealing sleeve 16 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.
[0039] Please see Figure 9 It is a Figure 5 The specific transformations are as follows:
[0040] At Figure 9 In this design, the tail end 113 of the plug 11 is fixed with (e.g., but not limited to, adhesive) a guide rod 13 extending along the through-passage direction of the passage 111. The guide rod 13 is offset from the through-passage 111 in the lateral direction of the plug 11. At this time, a spring 12 is sleeved in the guide rod 13, and the head end 121 of the spring 12 abuts against the tail end 113 of the plug 11. When the cervical plug device 10 includes a connecting block 14, the guide rod 13 can be slidably inserted into the connecting block 14, and the tail end 122 of the spring 12 sleeved on the guide rod 13 abuts against the connecting block 14. This design more effectively improves the smoothness, ease, and sensitivity of the reciprocating sliding of the plug 11. Specifically, in... Figure 9 In this example, the guide rods 13 are multiple, spaced apart from each other and arranged around the centerline passing through the channel 111, with each guide rod 13 covered by a spring 12; this further improves the smoothness, ease, and sensitivity of the reciprocating sliding of the plug 11. It should be noted that when the cervical plug device 10 includes a protective outer casing 15, both the guide rods 13 and the springs 12 covered by the guide rods 13 are located within the internal space 153 of the protective outer casing 15, as shown in the diagram. Figure 9 As shown.
[0041] And at Figure 5 Since it does not have a guide rod 13, the head end 121 of the spring 12 is fixedly connected to the tail end 113 of the plug 11, and the tail end 122 of the spring 12 is fixedly connected to the connecting block 14.
[0042] Apart from the differences mentioned above, the other two are the same, so they will not be repeated here.
[0043] Compared with the prior art, since the spring 12 extends along the penetrating direction of the channel 111 and the head end 121 of the spring 12 is connected to the tail end 113 of the plug 11, and the plug 11 can slide back and forth by the elastic deformation of the head end 121 of the spring 12 moving closer to or away from the tail end 122 of the spring 12, this design allows the plug 11 to slide back and forth within a certain range. On the one hand, it satisfies the adjustment of the insertion part 30 within a certain range in the uterine cavity, expanding the applicability of the cervical plug device 10 of this utility model. On the other hand, it makes the plug 11 have a flexible plugging effect, improving the plugging effect.
[0044] It should be noted that, although Figure 1 and Figure 2The cervical plug device 10 is shown to be fixedly connected to the insertion part 20 by means of the connecting block 14. Obviously, depending on actual needs, the cervical plug device 10 can also be designed without the connecting block 14. When the cervical plug device 10 does not include the connecting block 14, the tail end 123 of the spring 12 is assembled and connected to the insertion part 30. For example, the tail end 123 of the spring 11 opposite to the passage 111 is fixedly connected to the insertion part 30, or the tail end 123 of the spring 11, which is sleeved on the guide rod 13, abuts against the insertion part 30, and the guide rod 13 and the insertion part 30 slide together. The tail end 152 of the protective sleeve 15 is fixedly connected to the insertion part 30. That is to say, a structure with the same function as the connecting block 14 can be designed on the insertion part 30. This structure can be a protruding structure that protrudes upward from the side of the insertion part 30 to meet the need for the protruding structure to be assembled and connected to the tail end 122 of the spring 12, the guide rod 13 and the tail end 152 of the protective sleeve 15 respectively.
[0045] 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. A cervical plug device comprising a plug head, a through passage being formed through an inside of the plug head for an insertion portion of a hysteroscope to pass through, the through passage being exposed from a head end and a tail end of the plug head, respectively, characterized in that, The cervical plug device further comprises a spring extending along the through passage, a head end of the spring is connected with a tail end of the plug head, and the plug head is capable of reciprocating sliding by elastic deformation of the head end of the spring towards or away from the tail end of the spring.
2. The cervical plug device of claim 1, wherein, The head end of the spring is fixedly connected with the tail end of the plug head, and the through passage is arranged opposite to an internal space of the spring in the through direction of the through passage; or, the tail end of the plug head is fixedly provided with a guide rod arranged to extend along the through direction of the through passage, the guide rod is arranged to be staggered with the through passage in a lateral direction of the plug head, the spring is sleeved on the guide rod, and the head end of the spring is in abutment with the tail end of the plug head.
3. The cervical plug device of claim 2, wherein, The guide rod is a plurality of guide rods arranged to be spaced apart from each other and to be collectively arranged around a center line of the through passage; and the spring is sleeved on each of the guide rods.
4. The cervical plug device of claim 2, wherein, The connection block is further provided with a through hole for the insertion part to pass through; the tail end of the spring arranged opposite to the through passage is fixedly connected with the connection block; or, the guide rod is slidably arranged in the connection block, and the tail end of the spring sleeved on the guide rod is in abutment with the connection block.
5. The cervical plug device of claim 4, wherein, The flexible protective sleeve body is further provided with a head end fixedly connected with the tail end of the plug head and a tail end fixedly connected with the connection block; the spring fixedly connected with the tail end of the plug head is located in an internal space of the protective sleeve body; or, the guide rod and the spring sleeved on the guide rod are both located in the internal space of the protective sleeve body.
6. The cervical plug device of claim 5, 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 passage, the connection block 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.
7. The cervical plug device of claim 2, wherein, The flexible protective sleeve body is further provided with a head end fixedly connected with the tail end of the plug head; the spring fixedly connected with the tail end of the plug head is located in an internal space of the protective sleeve body; or, the guide rod and the spring sleeved on the guide rod are both located in the internal space of the protective sleeve body.
8. The cervical plug device of claim 1, wherein, The sealing sleeve is further provided with a threaded connection with the tail end of the plug head, a matching hole for the insertion part to seal through is arranged on a sleeve bottom of the sealing sleeve to communicate with an internal space of the sealing sleeve; and the plug head is in a frustoconical or prismatic shape.
9. The cervical plug device of claim 8, wherein, The sleeve bottom comprises a flat annular portion and an arc-shaped raised annular portion extending out from an inner side of the annular portion towards a direction close to a center line of the annular portion, and the raised annular portion defines the matching hole; an inner thread is arranged on a position of the sealing sleeve away from the sleeve bottom, a middle portion of the tail end of the plug head extends out to form an extension protrusion into the sealing sleeve, an outer thread is arranged on the extension protrusion, the extension protrusion is spaced apart from the sleeve bottom by a preset distance, and the through passage further penetrates the extension protrusion.
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 a cervical plug device according to any one of claims 1 to 9, the tail end of the insertion portion being assembled to the handle, the head end of the insertion portion protruding from the plug head and being arranged in a suspended manner from the passage channel.