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 an inner tube and an outer tube, the inner tube and the outer tube are coaxially connected in a sliding mode, and the same side ends of the inner tube and the outer tube are connected with a sealing assembly. When the uterine cavity sealing device is used, the inner tube is inserted into the uterine cavity without moving, the outer tube is pushed to slide towards the end where the sealing assembly is installed, and the sealing assembly can be gradually opened and finally attached to the inner wall of the uterine cavity, so that the uterine cavity opening is closed, and uterine distention liquid cannot flow out; uterine distention liquid perfusion, hysteroscope insertion and hysteroscope position adjustment in a uterine cavity are facilitated, the situation that follow-up hysteroscope insertion and position adjustment cannot be achieved due to the fact that a water bag is used for blocking the uterine cavity is avoided, meanwhile, cut focus tissue is put into the sealing assembly, wraps the focus tissue when the sealing assembly is closed, and is taken out along with the device, and therefore the sealing effect is improved. And the process of taking out the cut focus point tissue is simplified.

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] Hysteroscopy is a new, minimally invasive gynecological diagnostic and treatment technique. It is a fiber optic endoscope used for examination and treatment within the uterine cavity. It includes a hysteroscope, an energy system, a light source system, an irrigation system, and an imaging system. It uses the anterior part of the endoscope to enter the uterine cavity, providing a magnification effect on the observed area. Due to its intuitive and accurate characteristics, it has become the preferred diagnostic and treatment method for gynecological bleeding disorders and intrauterine lesions during gynecological examinations and treatment of uterine cavity diseases.

[0003] During hysteroscopy, due to the confined space inside the uterus, a distending fluid is typically continuously injected into the uterus through an irrigation system to fill it, increasing the field of vision for medical personnel and facilitating procedures. However, due to the characteristics of the female reproductive organs, the cervix has a certain degree of dilatation, which causes fluid within the uterine cavity to leak out, resulting in insufficient visualization and reduced examination effectiveness. Furthermore, the leaking distending fluid can stain the surgeon's clothing, and clamping the cervix with cervical forceps can cause damage.

[0004] There are many existing technologies for hysteroscopic leak-proof devices, such as:

[0005] Chinese Patent Publication No. CN215821014U discloses a hysteroscopy anti-leakage device, including a fixing ring, which is detachably sleeved on the periphery of the hysteroscopy. The outer ring of the fixing ring is provided with a stop bladder, which is bowl-shaped when full. The shape and size of the stop bladder when full match the shape and size of the cervix. The stop bladder is provided with a filling tube, and the end of the filling tube is detachably provided with a one-way valve.

[0006] Therefore, most hysteroscopic anti-leakage devices prevent the distending fluid from flowing out by inflating a water-filled balloon and then fitting it against the uterine cavity. However, while the water-filled balloon prevents the distending fluid from flowing out, it also completely blocks the cervix, making subsequent hysteroscopic insertion and position adjustment impossible. Furthermore, since the water-filled balloon is made of soft material, its shape is not fixed even after inflation. Therefore, it is impossible to know whether the water-filled balloon can achieve a complete blockage.

[0007] In view of this, we propose a hysteroscopic leak-proof device. Utility Model Content

[0008] The purpose of this invention is to provide a hysteroscopic anti-leakage device to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A hysteroscopic leak-proof device includes an inner tube and an outer tube, which are coaxially slidably connected. A sealing component is connected to the same side end of the inner tube and the outer tube. When the inner tube is inserted into the uterine cavity and kept stationary, the outer tube is pushed to slide towards the end where the sealing component is installed, so that the sealing component opens and fits against the inner wall of the uterine cavity.

[0011] As a further embodiment of this utility model: the sealing assembly includes several opening plates, and an elastic membrane is fixedly connected between adjacent opening plates.

[0012] As a further embodiment of this utility model: a rubber sleeve is fixed to one end of the outer tube, and the same-side ends of the opening plate and the elastic membrane are fixed to one side of the rubber sleeve.

[0013] As a further embodiment of this utility model: a tapered insertion end is fixed at one end of the inner tube.

[0014] As a further embodiment of this utility model: a fixing ring is fixed at the connection between the insertion end and the inner tube, and a connecting rod is rotatably connected between the fixing ring and the opening plate.

[0015] As a further embodiment of this utility model: the outer side of the inner tube is threaded with a retainer.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. In this hysteroscopic anti-leakage device, by inserting the inner tube into the uterine cavity and keeping it stationary, the outer tube is pushed to slide towards the end where the sealing component is installed. The sealing component will gradually open and eventually fit against the inner wall of the uterine cavity, thereby sealing the uterine cavity opening and preventing the distending fluid from flowing out. By using the inner tube, it is also convenient to irrigate the distending fluid, insert the hysteroscope, and adjust the position of the hysteroscope in the uterine cavity, avoiding the use of a water balloon to block the uterine cavity, which would prevent subsequent hysteroscopic insertion and position adjustment.

[0018] 2. In this hysteroscopic leak-proof device, the cut lesion tissue is placed inside the sealing component. When the sealing component closes, it wraps the lesion tissue and is taken out with the device, simplifying the process of removing the cut lesion tissue. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structural contraction of this scheme.

[0020] Figure 2 This is a schematic diagram showing the overall structure of this scheme;

[0021] Figure 3 This is a schematic cross-sectional view of the structure of this scheme.

[0022] The meanings of the labels in the diagram are as follows:

[0023] 100. Inner tube; 101. Retaining ring; 102. Fixing device; 110. Insertion end;

[0024] 200. Outer tube; 201. Rubber sleeve;

[0025] 300, Sealing assembly; 301, Opening plate; 302, Elastic membrane; 303, Connecting rod. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example

[0028] Currently, most hysteroscopic anti-leakage devices work by inflating a water-filled balloon to prevent the distending fluid from leaking out. However, while the balloon prevents the distending fluid from leaking out, it also completely blocks the cervix, making subsequent hysteroscopic insertion and position adjustment impossible. Furthermore, since the water-filled balloon is made of soft material, its shape is not fixed even after inflation. Therefore, it is uncertain whether the water-filled balloon can achieve a complete blockage.

[0029] Therefore, refer to Figure 1 and Figure 2 As shown, the purpose of this embodiment is to provide a hysteroscopic anti-leakage device, which includes an inner tube 100 and an outer tube 200. The inner tube 100 and the outer tube 200 are coaxially slidably connected. A sealing component 300 is connected to the same side end of the inner tube 100 and the outer tube 200. When the inner tube 100 is inserted into the uterine cavity and remains stationary, the outer tube 200 is pushed to slide towards the end where the sealing component 300 is installed, so that the sealing component 300 opens and fits against the inner wall of the uterine cavity.

[0030] The improvement of this embodiment is that by inserting the inner tube 100 into the uterine cavity and keeping it stationary, the outer tube 200 is pushed to slide towards the end where the sealing component 300 is installed. The sealing component 300 will gradually open and eventually fit against the inner wall of the uterine cavity, thereby sealing the uterine cavity opening and preventing the distending fluid from flowing out. By using the inner tube 100, it is also convenient to irrigate the distending fluid, insert the hysteroscope, and adjust the position of the hysteroscope in the uterine cavity, avoiding the use of a water balloon to block the uterine cavity, which would prevent the subsequent insertion and position adjustment of the hysteroscope.

[0031] Meanwhile, the inner tube 100 is made of titanium alloy and can be designed in various models according to different patients. Titanium alloy itself has excellent properties such as light weight, strong plasticity, good weldability, and non-toxicity, making the inner tube 100 made of titanium alloy suitable for uterine surgery. The outer tube 200 is a medical rubber tube that does not irritate human tissue and has good sealing performance, which can ensure the device's leak-proof effect.

[0032] See Figure 3 As shown, since the cervix needs to be completely closed, leaving only the inner tube 100 as the sole passage, the sealing assembly 300 includes several opening plates 301, with an elastic membrane 302 fixedly connected between adjacent opening plates 301. When the sealing assembly 300 is pushed open, the opening plates 301 act as a framework, driving the elastic membrane 302 to gradually open. Simultaneously, as the overall structure changes from contraction to expansion, the elastic membrane 302 itself transforms from a concave shape to a convex shape, acting as a connecting and expanding component of the entire structure. 02. High-polymer elastic membrane 302 or medical-grade silicone material is selected, which has good elasticity and is harmless to human tissue, further ensuring the water-proof function of the device. At the same time, the edge of the opening plate 301 can be in various shapes such as outer arc, inner arc, and corrugated, thereby increasing the stability of the device fixed in the cervix when the opening plate 301 opens and is embedded in the inner wall of the cervix. In addition, in this embodiment, four opening plates 301 and elastic membranes 302 are selected, and the opening plates 301 and elastic membranes 302 are arranged around the inner tube 100 as the center.

[0033] Since the end connecting the opening plate 301 and the elastic membrane 302 must rotate when the tube opens, a rubber sleeve 201 is fixed to one end of the outer tube 200. The same side ends of the opening plate 301 and the elastic membrane 302 are fixed to one side of the rubber sleeve 201. Compared with the traditional rotating connection, the elasticity of the rubber sleeve 201 ensures that the opening plate 301 and the elastic membrane 302 can rotate smoothly, and the sleeve formed by the opening plate 301, the elastic membrane 302 and the rubber sleeve 201 is closed, preventing the expansion fluid from flowing out. Considering that the rubber sleeve 201 is prone to flipping outward when opening, the shape of the rubber sleeve 201 is a stepped cone. Through the stepped and conical design, the rubber sleeve 201 can be evenly stressed along the conical direction when subjected to external force, and each step can play a supporting role, thereby reducing the possibility of flipping outward.

[0034] Considering the need to open the opening plate 301, a fixing ring 101 is fixed at the connection between the insertion end 110 and the inner tube 100. A connecting rod 303 is rotatably connected between the fixing ring 101 and the opening plate 301. When the outer tube 200 slides toward the end where the sealing component 300 is installed, the opening plate 301 is pushed open by rotating the connecting rod 303. When the rubber sleeve 201 abuts against the fixing ring 101, the opening plate 301 expands to its maximum. When the outer tube 200 pulls the opening plate 301 to contract through the connecting rod 303, it also drives the rubber sleeve 201 to return to its original position, so as to prevent the rubber sleeve 201 from everting and being difficult to return to its original position, which would make it difficult to remove the entire device from the cervix. The connecting rod 303 is made of carbon fiber material. The fatigue resistance, high strength and high hardness of carbon fiber material are used to reduce the frequency of maintenance and replacement, and reduce costs.

[0035] Considering that the cervix is ​​not very large, a tapered insertion end 110 is fixed to one end of the inner tube 100 to facilitate insertion. Through the tapered design, when the inner tube 100 is inserted into the cervix, the inner tube 100 can smoothly bring the sealing component 300 into the cervix. It should be noted that the inner tube 100 should not be too long to avoid obstructing the surgical field of vision; the opening of the insertion end 110 can ensure the entry and exit of the hysteroscopy sheath.

[0036] Considering that during surgery, a surgeon would need to specifically fix the outer tube 200 to keep the sealing assembly 300 open, which would be a waste of manpower, the outer wall of the inner tube 100 is threaded, and a fixator 102 is rotatably connected to the thread. By rotating the fixator 102, its position on the inner tube 100 is adjusted, and the fixator 102 also pushes the outer tube 200 to move, thereby opening the sealing assembly 300. When the rotation of the fixator 102 stops, due to the self-locking characteristic of the thread, the fixator 102 will not change position due to the elasticity of the elastic membrane 302 after rotation stops, thus keeping the sealing assembly 300 open and saving manpower. To facilitate the rotation of the fixator 102, handles are symmetrically fixed to the fixator 102, making it easier for medical staff to apply force.

[0037] After removing the lesion with hysteroscopic electrosurgical instruments, the removed lesion tissue needs to be removed from the uterus to prevent it from adhering to the uterine wall. Existing surgical procedures often use forceps to clamp the removed lesion tissue after removal, repeating this process until all the removed lesion tissue is removed, which is quite cumbersome. Considering that the removed lesion tissue will sink to the lowest point of the uterus due to gravity, it is only necessary to change the patient's position during the operation so that the removed lesion tissue falls onto the sealing surface formed by the opening plate 301, elastic membrane 302, and rubber sleeve 201. During the closing of the sealing component 300, the opening plate 301, elastic membrane 302, and rubber sleeve 201 will wrap around the removed lesion tissue. The removed lesion tissue is then removed synchronously with the entire device, simplifying the removal process of the cut lesion tissue.

[0038] This embodiment also provides a method for using a hysteroscopic anti-leakage device, which is applicable to the hysteroscopic anti-leakage device in the above embodiment, and includes the following steps:

[0039] S1. After softening the cervix, insert the insertion end 110 into the cervical opening;

[0040] S2. Rotating fixture 102 makes it fit the outer tube 200, pushes the outer tube 200 upward, and the opening plate 301 and elastic membrane 302 open and fit the inner wall of the cervix to perform uterine surgery.

[0041] S3. After the surgery, the reverse rotation fixator 102 is rotated, the outer tube 200 is moved down, and the opening plate 301 and elastic membrane 302 are repositioned and wrapped around the excised lesion tissue.

[0042] S4. Separate the retainer 102 from the outer tube 200, pull the outer tube 200 to its limit position, and then remove the entire device from the cervix.

[0043] In summary, the working principle of this solution is as follows:

[0044] Before the procedure, due to the narrow and tough cervical canal in non-pregnant women, which is difficult to dilate, there is a risk of serious complications such as difficulty in cervical dilation, failed placement of the endoscope, cervical laceration, or even uterine perforation or air embolism in nulliparous, women with a history of cervical surgery, and postmenopausal women. Therefore, the cervix in non-pregnant women is first intervened with drugs or mechanical methods to change its tissue structure, relax and soften it, and make it easier to dilate, allowing the device to enter and exit the uterine cavity without resistance. The drug pretreatment method is to use phloroglucinol injection for intravenous or intramuscular administration, usually by intravenous drip, at a dose of 40-80 mg. For patients with extremely tough cervical tissue, multiple injections can be given at different points on the cervix. The mechanical pretreatment method is to use a hydrophilic cervical dilator or a simple cervical dilator to stimulate and change the physicochemical properties of the cervical canal, thus softening the cervix. After the cervix is ​​softened, hysteroscopic surgery can be performed.

[0045] During the surgical procedure, the insertion end 110 of the inner tube 100 is first inserted into the cervix, ensuring the entire sealing assembly 300 is inside the cervix. The retainer 102 is then rotated clockwise, causing it to push the outer tube 200, which slides towards the end where the sealing assembly 300 is installed. Simultaneously, the connecting rod 303 rotates, pushing the opening plate 301 to open. The opening of the opening plate 301, in turn, causes the elastic membrane 302 to open, until the opening plate 301 and... The elastic membrane 302 is attached to the inner wall of the cervix. Then, the hysteroscopic sheath is inserted into the cervix through the inner tube 100. The uterine irrigation system is turned on. After filling the cervix with distending fluid through the hysteroscopic sheath, the lighting system and camera and imaging system are turned on. The position of the hysteroscopic sheath in the cervix is ​​adjusted to find the lesion. The lesion is removed using hysteroscopic electrosurgical instruments. The lesion tissue to be removed falls onto the sealing surface formed by the opening plate 301, the elastic membrane 302 and the rubber sheath 201.

[0046] After completing all surgical procedures, the hysteroscope sheath is first removed from the inner tube 100. The fixator 102 is rotated counterclockwise, causing it to move away from the sealing component 300. Under the elastic force of the elastic membrane 302, the outer tube 200 changes position with the fixator 102, causing it to slide away from the sealing component 300. At this time, the elastic membrane 302 drives the connecting rod 303 to rotate and simultaneously causes the opening plate 301 to contract. Then, the outer tube 200 is manually pulled until it cannot be pulled anymore. At this point, the opening plate 301 and the elastic membrane 302 contract to their minimum size, the rubber sheath 201 is reset, and the excised lesion tissue is wrapped. The entire device is then slowly removed from the cervix, completing the surgery.

[0047] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0048] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A hysteroscopic leak-proof device, comprising an inner tube (100) and an outer tube (200), characterized in that: The inner tube (100) and the outer tube (200) are slidably connected on the same axis. A sealing component (300) is connected to the same side end of the inner tube (100) and the outer tube (200). The inner tube (100) is inserted into the uterine cavity and left stationary. The outer tube (200) is pushed to slide towards the end where the sealing component (300) is installed, so that the sealing component (300) opens and fits against the inner wall of the uterine cavity.

2. The hysteroscopic leak-proof device according to claim 1, characterized in that: The sealing assembly (300) includes a plurality of opening plates (301), and an elastic membrane (302) is fixedly connected between adjacent opening plates (301).

3. The hysteroscopic leak-proof device according to claim 2, characterized in that: One end of the outer tube (200) is fixed with a rubber sleeve (201), and the same side ends of the opening plate (301) and the elastic membrane (302) are fixed to one side of the rubber sleeve (201).

4. The hysteroscopic leak-proof device according to claim 1, characterized in that: One end of the inner tube (100) is fixed with a tapered insertion end (110).

5. The hysteroscopic leak-proof device according to claim 4, characterized in that: A fixing ring (101) is fixed at the connection between the insertion end (110) and the inner tube (100), and a connecting rod (303) is rotatably connected between the fixing ring (101) and the opening plate (301).

6. The hysteroscopic leak-proof device according to claim 1, characterized in that: The inner tube (100) is threadedly connected to a retainer (102) on the outside.

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