Hysteroscope water leakage prevention device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a hysteroscope water leakage prevention device which comprises a catheter for a hysteroscope to be inserted and a blocking air bag made of elastomer materials, the blocking air bag is connected outside the catheter in a sleeved mode, and the blocking air bag comprises a necking front end, a front air ring, a connecting portion and a rear air ring. The inner diameter of the inserting opening at the front end of the necking opening is smaller than the outer diameter of a hysteroscope sheath; the inner side face of the front air ring is connected with a front air ring ventilation pipe penetrating through the guide pipe, and the front air ring is connected between the front end of the necking opening and the connecting part. The outer side wall face of the rear air ring is gradually thickened from back to front, the inner side face of the rear air ring is connected with a rear air ring ventilation pipe penetrating through the guide pipe, and the rear air ring is connected to the rear portion of the connecting part. The rear ends of the front balloon breather pipe and the rear balloon breather pipe are used for being connected with an inflating and deflating device. The utility model has the advantages of simple structure, difficulty in water leakage, smaller influence on the inspection range and less discomfort.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a hysteroscopy leak-proof device. Background Technology

[0002] Obstetricians and gynecologists often use hysteroscopy to examine and treat patients inside the uterine cavity. Before uterine surgery and cervical examination, distending fluid needs to be injected into the uterus to open it up, so that the hysteroscope can achieve better imaging. However, some patients have cervical relaxation, which may cause the distending fluid to leak out (causing the uterus to tighten, resulting in poor imaging and inaccurate imaging).

[0003] To prevent severe leakage of distending fluid, the primary method currently used is to close the cervix with cervical forceps. However, this method is prone to cervical injury, and in some patients with short cervixes, the forceps are difficult to apply, resulting in incomplete closure. Alternatively, a leak-proof plug, consisting of a balloon or silicone block, is fixed or movable to the hysteroscope. During hysteroscopic movement, this plug moves up and down with the hysteroscope, causing discomfort to the patient. Furthermore, existing sealing plugs may fail to completely block the cervix due to hysteroscopic movement, allowing distending fluid to leak out even during hysteroscopic procedures, resulting in insufficient uterine dilation and impaired imaging.

[0004] In response, Chinese patent application number CN201922367181.2 discloses a cervical leak-proof device, including a water-blocking block and an airbag outside the water-blocking block; the front section of the airbag is also provided with a water-replenishing plug, the water-replenishing plug has a water-replenishing hole, the water-replenishing hole is connected to the water-replenishing interface at the end of the water-blocking block through the water-replenishing channel inside the water-blocking block; the airbag includes a fixed airbag fixed outside the water-blocking block and a movable airbag fixed outside the water-blocking block. By adding a water-replenishing plug, a certain pressure is maintained in the uterine cavity, so that even with long-term examination, the degree of uterine cavity expansion is roughly the same, and the accuracy of the examination is higher; the addition of a movable airbag allows the movable airbag to retract automatically according to the relaxation degree of the cervix when the medical staff operates the hysteroscope, unlike the fixed airbag, which moves with the hysteroscope during the operation and causes discomfort to the patient.

[0005] However, during our further verification and implementation, we found the following defects in the above technology: 1. Complex structure. For example, existing hysteroscopes already have built-in water replenishment function, so there is no need to set up a water replenishment structure on the leak-proof device; 2. Although a movable balloon is set, the position of the water replenishment plug is difficult to change during the examination while ensuring no leakage. It will always block the area near the internal os of the cervix and the cervical canal, and will also limit the observation angle of the hysteroscope, which will have a significant impact on the scope of the examination. Utility Model Content

[0006] The purpose of this invention is to provide a hysteroscopic anti-leakage device that is simple in structure, not prone to leakage, has less impact on the scope of the examination, and causes less discomfort.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] This utility model provides a hysteroscopic anti-leakage device, including a catheter for inserting a hysteroscope and a sealing balloon made of an elastomeric material. The sealing balloon is fitted over the catheter and includes a constricted front end, a front air ring, a connecting part, and a rear air ring.

[0009] The inner diameter of the insertion interface at the front end of the constriction is smaller than the outer diameter of the hysteroscopy sheath.

[0010] The inner side of the front air ring is connected to a front air ring vent pipe that passes through the duct, and the front air ring is connected between the front end of the constriction and the connecting part.

[0011] The outer wall of the rear air ring gradually thickens from back to front, and the inner side of the rear air ring is connected to a rear air ring vent pipe that passes through the duct. The rear air ring is connected to the rear of the connecting part.

[0012] The rear ends of the front and rear air vent pipes are used to connect to the inflation / deflation device.

[0013] Preferably, the conduit includes a tube body, the front outer side of the tube body is provided with an annular groove, the wall between the annular groove and the front port of the tube body is provided with a third through hole for the front air ring ventilation tube to pass through, and the rear end of the tube body near the annular groove is provided with a second through hole for the rear air ring ventilation tube to pass through.

[0014] Preferably, the rear end of the tube body is flared.

[0015] Preferably, the flared wall is provided with two first through holes, which are used to limit the front air vent and the rear air vent.

[0016] Preferably, the inner diameter of the connecting part is smaller than the inner diameter of the front gasket and the inner diameter of the rear gasket, and the connecting part is tightly fitted into the annular groove.

[0017] Preferably, the inflation / deflation device is a gas valve ball.

[0018] Preferably, the valve ball includes a small valve ball and a large valve ball. The small valve ball is connected to the rear end of the front air vent pipe and is used to inflate or deflate the front air vent. The large valve ball is connected to the rear end of the rear air vent pipe and is used to inflate or deflate the rear air vent.

[0019] Preferably, the shape of the insertion interface is frustum-shaped.

[0020] Preferably, the volume of the rear air ring is larger than the volume of the front air ring.

[0021] Preferably, the occlusion airbag is made of rubber.

[0022] Preferably, the conduit is made of polypropylene plastic.

[0023] Due to the adoption of the above technical solutions, the advantages of this utility model are as follows:

[0024] 1. The front air ring included in this utility model can shrink and move towards the external os of the cervix during the examination. The front air ring will not only not interfere with the hysteroscopy's examination of the uterine cavity, but also will not interfere with the hysteroscopy's examination of the internal os of the cervix. It can also enable the hysteroscopy to examine part of the cervical canal.

[0025] 2. This utility model can achieve the following by inflating the rear air ring, so that the part of the rear air ring close to the front air ring gradually expands, so that the front air ring and the rear air ring are close together. While the rear air ring always blocks the external opening of the cervix, the front air ring moves towards the external opening of the cervix without leaking water.

[0026] 3. The front and rear air rings included in this utility model can simultaneously play a role in sealing and preventing leakage, ensuring thorough leakage prevention.

[0027] 4. When removing this utility model, the first air release knob can be turned to release the air from the front air ring and it can be easily pushed out; when re-inserting, the small air valve ball can be squeezed to inflate the front air ring in the uterine cavity to complete the sealing and implantation. The operation is simple and convenient.

[0028] 5. With the front and rear air rings providing support, this invention is less likely to move during hysteroscopic procedures, resulting in less patient discomfort.

[0029] 6. This utility model does not require the setting of functional components such as water replenishment components, inclined rubber surfaces, and rubber blocks, and has a simple structure and low cost. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A partial axial cross-sectional view of the hysteroscopic anti-leakage device provided in this embodiment of the utility model when it is inflated.

[0032] Figure 2 for Figure 1Enlarged view of point A;

[0033] Figure 3 for Figure 1 A schematic diagram of the axial cross-section of the conduit;

[0034] Figure 4 To be Figure 1 A schematic diagram showing the state of the front air shroud after deflation.

[0035] Figure 5 To Figure 4 A schematic diagram showing the state of the rear air ring after it has been inflated to a certain extent.

[0036] Figure 6 For hysteroscopy and Figure 1 A schematic diagram showing the connection relationship of the hysteroscopy leak-proof device.

[0037] In the diagram: 1. Front airway tube; 2. Rear airway tube; 3. Hysteroscope; 10. Occlusion balloon; 11. Narrowed front end; 111. Insertion port; 12. Front airway; 13. Connecting part; 131. Gradual wall thickness cavity; 14. Rear airway; 20. Catheter; 21. Tube body; 211. Flaring; 2111. First perforation hole; 212. Second perforation hole; 213. Circular groove; 214. Third perforation hole; 215. Front port; 30. Small air valve ball; 31. First air release knob; 40. Large air valve ball; 41. Second air release knob; 100. Hysteroscope leak-proof device. Detailed Implementation

[0038] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," "outer," "left," "right," "front," and "rear" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not 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] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0040] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0041] The specific implementation method is described below:

[0042] An embodiment of a hysteroscopic leak-proof device provided by this utility model is shown below. Figure 1 , Figure 6 It includes a catheter 20 for inserting a hysteroscope 3, a occlusion balloon 10, a small valve ball 30, and a large valve ball 40.

[0043] The conduit 20 includes a tube body 21. The front outer surface of the tube body 21 has an annular groove 213. A third through-hole 214 is provided on the wall between the annular groove 213 and the front port 215 of the tube body 21. A second through-hole 212 is provided at the rear end of the tube body 21 near the annular groove 213. The rear end of the tube body 21 is a flared end 211. A first through-hole 2111 is provided on the wall of the flared end 211 for the front air vent tube 1 and the rear air vent tube 2 to pass through. (See also...) Figure 1 , Figure 3 .

[0044] The occlusion balloon 10 is tightly fitted onto the outside of the catheter 20. The occlusion balloon 10 includes a constricted front end 11, a front air ring 12, a connecting part 13, and a rear air ring 14. The inner diameter of the insertion port 111 of the constricted front end 11 is smaller than the outer diameter of the hysteroscope sheath 3. The insertion port 111 is frustoconical in shape. (See [reference]). Figure 1 , Figure 2 ;

[0045] The inner diameter of the connecting part 13 is smaller than the inner diameter of the front air ring 12 and the inner diameter of the rear air ring 14, and the connecting part 13 is tightly fitted into the annular groove 213.

[0046] The inner side of the front air ring 12 is connected to a front air ring vent pipe 1 that passes through the third through hole 214, and the front air ring 12 is connected between the constricted front end 11 and the connecting part 13.

[0047] The outer wall of the rear air ring 14 gradually thickens from back to front, and extends towards the front air ring 12 as the amount of air inside the rear air ring 14 increases. The inner side of the rear air ring 14 is connected to the rear air ring vent pipe 2 that passes through the second through hole 212. The rear air ring 14 is connected to the rear of the connecting part 13.

[0048] The rear ends of the front gas ring vent pipe 1 and the rear gas ring vent pipe 2 are used to connect to the inflation / deflation device.

[0049] The small air valve ball 30 is connected to the rear end of the front air ring vent pipe 1; the large air valve ball 40 is connected to the rear end of the rear air ring vent pipe 2.

[0050] In this embodiment, the occlusion airbag 10 is made of rubber; the conduit 20 is made of polypropylene plastic.

[0051] When using this invention, both the front air ring 12 and the rear air ring 14 are in a deflated state. Then, the medical staff holds the flared end 211 of the catheter 20 and inserts the invention from the speculum opening until the flared end 211 is about 3cm away from the speculum (the specific distance can be determined by testing the actual length of the catheter 20). Then, the medical staff squeezes the small air valve ball 30 (the number of squeezes depends on the specific volume of the selected air valve ball, which can make the front air ring 12 expand to a suitable volume for conventional leak sealing, referring to the leak sealing expansion volume of existing technologies and products), so that the front air ring 12 is inflated and expanded near the internal os of the cervix. Then, the large air valve ball 40 is squeezed to inflate and expand the rear air ring 14 until it contacts the external os of the cervix. Then, the sheath of the hysteroscope 3 is slowly inserted forward from the flared end 211. After the sheath passes through the insertion buckle 111, it is sealed and enters the uterine cavity. Then, the hysteroscope is operated to inject distending fluid into the uterine cavity. At this time, examination or surgery can be performed.

[0052] When examining the area near the internal os of the cervix, medical staff manually push the flared end 211 of the catheter 20, then turn the first deflation knob 31 to deflate the front air ring 12, and then squeeze the large air valve ball 40 to continue expanding and elongating the rear air ring 14. During this process, the rear air ring 14 gradually expands and extends towards the front air ring 12. Because the rear air ring 14 remains in contact with the external os of the cervix, during the inflation of the rear air ring 14, the front end of this invention gradually moves towards the external os of the cervix. The front of this invention no longer obstructs the area near the internal os of the cervix, enabling examination of the area near the internal os of the cervix and other uterine regions. See [link to relevant documentation]. Figure 4 , Figure 5 .

[0053] The above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is impossible to exhaustively list all possible implementations here. All obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A hysteroscopic leak-proof device (100), comprising a catheter (20) for inserting a hysteroscope (3) and a sealing balloon (10) made of an elastomeric material, the sealing balloon (10) being fitted over the catheter (20), characterized in that: The sealing airbag (10) includes a constricted front end (11), a front air ring (12), a connecting part (13), and a rear air ring (14). The inner diameter of the insertion port (111) of the constricted front end (11) is smaller than the outer diameter of the sheath of the hysteroscope (3); The inner side of the front air ring (12) is connected to a front air ring vent pipe (1) that passes through the duct (20), and the front air ring (12) is connected between the constricted front end (11) and the connecting part (13). The outer wall of the rear air ring (14) gradually thickens from back to front. The inner side of the rear air ring (14) is connected to the rear air ring ventilation pipe (2) that passes through the duct (20). The rear air ring (14) is connected to the rear of the connecting part (13). The rear ends of the front air ring vent pipe (1) and the rear air ring vent pipe (2) are used to connect to the inflation / deflation device.

2. The hysteroscopy water leakage prevention device (100) according to claim 1, characterized in that: The conduit (20) includes a tube body (21), the front part of which is provided with an annular groove (213), and a third through hole (214) for the front air ring ventilation tube (1) to pass through is provided on the wall between the annular groove (213) and the front port (215) of the tube body (21). A second through hole (212) for the rear air ring ventilation tube (2) to pass through is provided at the rear end of the tube body (21) near the annular groove (213).

3. The hysteroscopic leak-proof device (100) as described in claim 2, characterized in that: The rear end of the tube body (21) is flared (211).

4. The hysteroscopy water leakage prevention device (100) as claimed in claim 3, wherein: The flared opening (211) has two first through holes (2111) on its wall.

5. The hysteroscopy water leakage prevention device (100) as claimed in claim 1, wherein: The inner diameter of the connecting part (13) is smaller than the inner diameter of the front air ring (12) and the inner diameter of the rear air ring (14).

6. The hysteroscopy water leakage prevention device (100) as claimed in claim 1, wherein: The inflation / deflation device is a gas valve ball.

7. The hysteroscopy water leakage prevention device (100) as claimed in claim 6, wherein: The valve ball includes a small valve ball (30) and a large valve ball (40).

8. The hysteroscopy water leakage prevention device (100) as claimed in claim 1, wherein: The plug-in interface (111) is shaped like a frustum.

9. The hysteroscopy water leakage prevention device (100) as claimed in claim 1, wherein: The volume of the rear air ring (14) is larger than the volume of the front air ring (12).

10. The hysteroscopic leak-proof device (100) as described in claim 1, characterized in that: The occlusion airbag (10) is made of rubber.

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