An automatic drainage type menstrual cup and an operating method thereof

Abstract

The present application belongs to the technical field of sanitary products, and particularly relates to an automatic liquid-discharging menstrual cup and an operation method thereof. The menstrual cup comprises a cup body and a liquid-discharging pipe in communication with the bottom of the cup body, the liquid-discharging pipe is provided with a liquid leakage opening, the cup body or the surface of the liquid-discharging pipe is provided with a vent hole, and the vent hole is closed by the cavity wall in a placed state. The end face of the lower end of the liquid-discharging pipe can be provided with a plug, and the vent hole and the liquid leakage opening can be arranged on the same side along the axial direction of the liquid-discharging pipe. During use, the cavity wall is pulled by pulling the folded skin part outside the channel opening, or the lower end of the liquid-discharging pipe is directly pulled to make it bend and deform, so that the vent hole is separated from the cavity wall and connected with the external atmosphere, and the menstrual blood in the cup body is discharged through the liquid leakage opening under the action of gravity. The present application omits the traditional valve structure, simplifies the product structure, reduces the manufacturing cost, and improves the hygiene and convenience during use without the need of inserting fingers into the cavity to contact the end part.

Description

Technical Field

[0001] This invention belongs to the field of hygiene products technology, specifically relating to an automatic menstrual cup with drainage function and its operating method. Background Technology

[0002] Currently, menstrual cups, as reusable menstrual hygiene products, are widely used for the collection and management of menstrual blood. Existing menstrual cups typically have a valve or stopper at the bottom of the cup. Users need to insert their fingers into the body cavity to squeeze or twist the valve to allow the collected menstrual blood to drain through the bottom opening. However, this method not only requires a high level of user skill but also poses hygiene risks due to direct contact between the fingers and the cup. Furthermore, the complex valve structure increases manufacturing costs and cleaning difficulty.

[0003] Furthermore, the existing valve structure of menstrual cups (such as ball valves and silicone plugs) has the following problems: First, the connection between the valve assembly and the cup body forms a dead angle, making it easy for menstrual blood and secretions to remain and difficult to clean; second, silicone valves are prone to aging and deformation after repeated squeezing, leading to sealing failure; third, the valve needs to be opened by inserting a finger into the cavity to apply squeezing pressure, which requires a high level of operating skills from the user. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides an automatic menstrual cup with drainage and its operation method, which has a simpler structure, is more convenient to operate, and can drain without the need for fingers to touch the end of the cup.

[0005] The technical solution adopted in this invention is as follows: In a first aspect, the present invention provides an automatic draining menstrual cup, comprising a cup body and a drain pipe communicating with the bottom of the cup body. During installation, the cup body is inserted into the human body cavity and the drain pipe is positioned outward. The drain pipe is provided with a leakage port, and the surface of the cup body or the drain pipe is provided with a vent hole. The vent hole is sealed by the wall of the human body cavity when inserted.

[0006] In conjunction with the first aspect, the present invention provides a first embodiment of the first aspect, wherein the cup body is bell-shaped or funnel-shaped with an open upper end, and tapered at the lower end and integrally connected with a drain pipe, the drain pipe being a tubular structure.

[0007] In conjunction with the first embodiment of the first aspect, the present invention provides a second embodiment of the first aspect, wherein the vent is provided on the lower end side wall of the drain pipe.

[0008] In conjunction with the first embodiment of the first aspect, the present invention provides a third embodiment of the first aspect, wherein the leakage port is located at the lower end face of the drain pipe.

[0009] In conjunction with the first embodiment of the first aspect, the present invention provides a fourth embodiment of the first aspect, wherein the leakage port is located on the side wall of the drain pipe, the lower end face of the drain pipe is provided with a plug, and the leakage port is sealed by the wall of the human body cavity when inserted.

[0010] In conjunction with the first embodiment of the first aspect, the present invention provides a fifth embodiment of the first aspect, wherein the opening area of ​​the leakage port is larger than the opening area of ​​the vent hole.

[0011] In conjunction with the fourth embodiment of the first aspect, the present invention provides a sixth embodiment of the first aspect, wherein the vent and the leak are spaced apart along the axial direction of the drain pipe on the same side of the drain pipe, and the line connecting their centers is parallel to the axis of the drain pipe.

[0012] Secondly, the present invention provides an operating method using an automatic menstrual cup described in any of the above-mentioned claims, characterized in that: the menstrual cup is placed into the human body cavity, so that the vent is sealed by the wall of the human body cavity; during drainage, the folded skin portion extending from the opening of the human body cavity is moved to pull the wall of the human body cavity, so that the vent is separated from the wall of the human body cavity and contacts and connects with the external atmospheric environment, and the menstrual blood collected in the cup is discharged from the drain.

[0013] Thirdly, the present invention provides an operating method using the aforementioned automatic menstrual cup, characterized in that: the menstrual cup is placed into the human body cavity, so that the vent and the drain are both sealed by the wall of the human body cavity; during drainage, the folded skin portion extending from the opening of the human body cavity is moved to pull the wall of the human body cavity, so that the vent and the drain simultaneously detach from the wall of the human body cavity, and the menstrual blood collected in the cup is discharged from the drain.

[0014] Fourthly, the present invention provides an operating method using the automatic menstrual cup described in any of the above-mentioned claims, characterized in that: the menstrual cup is placed into the human body cavity, so that the vent is sealed by the wall of the human body cavity; during drainage, the lower end of the drainage tube is bent and deformed, so that the vent is detached from the wall of the human body cavity and contacts the external atmospheric environment, and the menstrual blood collected in the cup is discharged from the leakage port.

[0015] The beneficial effects of this invention are as follows: This invention provides a leak outlet on the drain pipe and a vent hole on the surface of the cup or drain pipe that can be sealed by the walls of the human body cavity. It replaces the traditional valve structure by utilizing the natural sealing effect of the human body cavity walls on the vent hole, eliminating the need for complex valve components, simplifying the product structure, and reducing manufacturing costs. When using this invention, the folded skin portion extending from the channel opening can be manipulated to pull the wall of the human body cavity, causing the vent to detach from the wall of the human body cavity and connect with the external atmosphere. This allows the menstrual blood collected in the cup to be discharged through the drain under the action of gravity, eliminating the need for the user to insert their fingers into the human body cavity to touch the end of the cup, making the operation more hygienic and convenient. This invention arranges the vent and the drain outlet on the drain pipe in a reasonable manner. When the vent and the drain outlet are simultaneously out of contact with the wall of the human body cavity, a stable channel for air intake and liquid output can be formed, so that the air pressure inside the cup body is balanced with the outside, which is conducive to the continuous and smooth discharge of menstrual blood. The lower end face of the drain pipe of the present invention can be sealed, and together with the leakage port and vent hole opened on the side wall, the product can maintain a closed effect when inserted. At the same time, the vent hole can be opened by bending and deforming the lower end of the drain pipe, providing multiple operation methods and improving the flexibility of use. Attached Figure Description

[0016] Figure 1 This is a front view of the menstrual cup according to the first embodiment of the present invention; Figure 2 This is an isometric view of the menstrual cup according to the first embodiment of the present invention; Figure 3 This is an isometric view of the menstrual cup according to the second embodiment of the present invention; Figure 4 This is a cross-sectional planar schematic diagram of the menstrual cup according to the first embodiment of the present invention; Figure 5 This is a cross-sectional planar schematic diagram of the menstrual cup according to the second embodiment of the present invention; Figure 6 This is a cross-sectional axonometric schematic diagram of the menstrual cup according to the first embodiment of the present invention; Figure 7 This is a cross-sectional isometric schematic diagram of the menstrual cup according to the second embodiment of the present invention.

[0017] In the diagram: 1-Cup body, 2-Drain pipe, 3-Leakage port, 4-Vent hole, 5-Seal. Detailed Implementation

[0018] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for 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. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0024] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] This embodiment discloses an automatic draining menstrual cup, which solves the technical problems of existing menstrual cups, such as complex valve structure, high manufacturing cost, and hygiene hazards caused by direct finger contact with the end during operation.

[0026] Specifically, such as Figure 1 and Figure 2 As shown, the menstrual cup includes a cup body 1 and a drain tube 2 connected to the bottom of the cup body 1. The drain tube 2 has a drain outlet 3, and the surface of the cup body 1 or the drain tube 2 has a vent hole 4. The cup body 1 has a conical cross-section, with its larger open end facing inward to collect menstrual blood. The drain tube 2 drains the menstrual blood collected in the cup body 1 into the toilet or a corresponding location. The cup body 1 and the drain tube 2 are integrally molded from medical-grade flexible silicone or thermoplastic elastomer. The drain tube 2 can be bent and deformed under external force and will return to its straight state due to the elasticity of the material after the external force is removed.

[0027] The cup body 1 and the drain tube 2 can be integrally molded from medical-grade flexible silicone or thermoplastic elastomer, and the drain tube 2 has a hollow tubular structure. Before use, the cup body 1 can be folded to reduce its volume for insertion.

[0028] In use, the cup body 1 is placed into the body cavity. The cup body 1 returns to its original shape due to its elasticity, and its upper opening adheres to the cavity wall to collect menstrual blood. At this time, the vent 4 remains closed due to the natural pressure and adhesion of the cavity wall, creating a slightly negative pressure environment inside the cup body 1, where the menstrual blood is temporarily stored. When drainage is needed, the vent 4 is opened from the cavity wall and connected to the external atmosphere. The negative pressure inside the cup body 1 is broken, and the menstrual blood is naturally discharged through the drain vent 3 under gravity.

[0029] Compared with existing menstrual cups with valves, this embodiment eliminates the valve assembly, resulting in a simpler structure, reduced manufacturing costs, and improved hygiene and convenience as it eliminates the need for fingers to be inserted into the cavity to contact the end during operation.

[0030] It is worth noting that under normal use (such as sitting, standing, or walking slowly), the wall of the body cavity remains basically in contact with the lower side wall of the drainage tube 2, and the leakage port 3 and the vent 4 are naturally sealed by the soft tissue of the cavity wall. When abdominal pressure increases significantly (such as during violent coughing or squatting), the cavity wall and the side wall of the drainage tube 2 may undergo relative displacement, and there is a possibility of slight leakage. The degree of leakage is comparable to that of existing valveless menstrual cups. Example

[0031] This embodiment discloses an automatic drainage menstrual cup, which solves the technical problems of easy fluid accumulation and poor drainage at the connection between the cup body and the drainage tube.

[0032] The technical solution includes a cup body 1 and a drain pipe 2 connected to the bottom of the cup body 1. For example... Figure 1 and Figure 4As shown, the cup body 1 is bell-shaped or funnel-shaped with an open top, gradually narrowing at the bottom and connected to the drain pipe 2. The connection is made with a large rounded corner for a smooth transition. The drain pipe 2 is a slender and flexible tubular structure.

[0033] The drain pipe 2 is provided with a drain outlet 3, and the surface of the cup body 1 or the drain pipe 2 is provided with a vent hole 4. After the menstrual blood is collected and enters the cup body 1, it flows downward along the bell-shaped or funnel-shaped inclined inner wall, and converges near the drain outlet 3 of the drain pipe 2 at the smooth transition point, so that no liquid will stick to the wall or accumulate in dead corners at the connection point.

[0034] In the inserted state, the vent 4 is sealed by the cavity wall, creating a negative pressure environment inside the cup body 1 to temporarily store menstrual blood. During drainage, the vent 4 is disengaged from the cavity wall by operation, allowing external air to enter and balance the pressure, while the menstrual blood is smoothly discharged through the drain port 3. Compared to existing products where the transition between the cup body and valve is abrupt and menstrual blood is easily retained, the amount of menstrual blood residue in this embodiment is significantly reduced, making cleaning much easier. Example

[0035] This embodiment discloses an automatic draining menstrual cup, which solves the technical problem of negative pressure inside the cup hindering the smooth flow of menstrual blood during drainage.

[0036] The technical solution includes a cup body 1 and a drain pipe 2 connected to the bottom of the cup body 1. For example... Figure 4 As shown, the lower end face of the drain pipe 2 is provided with a drain outlet 3, and the lower side wall of the drain pipe 2 is provided with a vent hole 4.

[0037] During insertion, the vent 4 is tightly sealed by the wall of the human body cavity. The drain outlet 3 is located at the lower end face of the drain tube 2. It may not be completely blocked by the cavity wall or may only be in partial contact. However, since the vent 4 is sealed, the inside of the cup body 1 maintains a negative pressure state. This negative pressure environment is like "sucking" in menstrual blood, effectively preventing menstrual blood from flowing out through the drain outlet 3.

[0038] When drainage is needed, the folded skin portion extending from the opening of the menstrual cup pulls on the wall of the body cavity, causing the vent 4 to detach from the cavity wall and connect with the external atmosphere. The negative pressure above the cup 1 is eliminated, and menstrual blood continues to drain through the drain port 3 under the influence of gravity. Compared to existing menstrual cups that require squeezing the valve end with fingers, this embodiment eliminates the need for fingers to touch the end of the drain tube 2 during operation; only the folded skin portion extending from the opening of the body cavity needs to be moved, making the operation more hygienic. Example

[0039] This embodiment discloses an automatic draining menstrual cup, which solves the technical problems of complex valve structure and insufficient sealing reliability of existing menstrual cups.

[0040] The technical solution includes a cup body 1 and a drain pipe 2 connected to the bottom of the cup body 1. For example... Figure 3 and Figure 5As shown, the lower end side wall of the drain tube 2 is provided with a leakage port 3 and a vent 4, and the lower end face of the drain tube 2 is provided with a plug 5. In the inserted state, the leakage port 3 and the vent 4 are both sealed by the wall of the human body cavity, and the plug 5 prevents menstrual blood from flowing out from the lower end face of the drain tube 2.

[0041] Because the cavity wall has natural elasticity and conformability, the leakage port 3 and vent 4 on the lower side wall of the drainage tube 2 are simultaneously compressed and conformed to by the soft tissue of the cavity wall. Together with the bottom seal 5, multiple physical seals are formed, which effectively prevents menstrual blood leakage in non-drainage states.

[0042] During drainage, the folded skin extending from the opening pulls on the wall of the menstrual cavity, causing the drain port 3 and vent 4 to simultaneously detach from the cavity wall. External air enters the space above the cup body 1 through the vent 4, while menstrual blood is discharged through the drain port 3 under gravity. Compared to existing menstrual cups that use ball valves or plugs, this embodiment utilizes the cavity wall itself for sealing, eliminating the need for valve parts, resulting in a simpler structure and lower failure rate. Example

[0043] This embodiment discloses an automatic drainage menstrual cup, which solves the technical problem of poor drainage caused by asynchronous opening of the two-hole structure.

[0044] The technical solution includes a cup body 1 and a drain pipe 2 connected to the bottom of the cup body 1. For example... Figure 5 and Figure 7 As shown, the lower end side wall of the drain pipe 2 is provided with a leak outlet 3 and a vent hole 4, and the lower end face of the drain pipe 2 is provided with a plug 5. The vent hole 4 and the leak outlet 3 are spaced apart along the axial direction of the drain pipe 2 on the same side of the drain pipe 2, and the line connecting their centers is parallel to the axis of the drain pipe 2. The opening area of ​​the leak outlet 3 is larger than the opening area of ​​the vent hole 4.

[0045] During insertion, the side of the drain tube 2 containing the vent 4 and the drain outlet 3 should face the cavity wall, ensuring that both are simultaneously sealed tightly by that side of the cavity wall. Since the two holes are on the same side, only a slight adjustment of the insertion angle is needed to achieve synchronous contact. During drainage, a one-way prying motion along the skin folds extending from the opening of that side will simultaneously disengage the two holes from the cavity wall. The larger opening area of ​​the drain outlet 3 provides a wide liquid outflow channel, reducing resistance to the discharge of high-viscosity menstrual blood; the smaller opening area of ​​the vent 4 allows for slow and stable air introduction, preventing excessively rapid air intake that could cause eddies or air bubbles to form inside the tube, resulting in air blockage. Compared to existing menstrual cups, this embodiment allows both holes to be opened simultaneously with a single pry, making operation simpler. Furthermore, the area difference and same-side arrangement of the drain outlet 3 and the vent 4 ensure stable coordination between air intake and drainage. Example

[0046] This embodiment discloses an operating method for an automatic menstrual cup that drains menstrual fluid, solving the technical problems of inconvenient operation and poor hygiene of existing menstrual cups.

[0047] Use any one of the automatic drainage menstrual cups from Examples 1 to 3 (see reference). Figure 4 (Cross-section structure) The menstrual cup is placed into the human body cavity, so that the vent 4 is sealed by the wall of the human body cavity, and a negative pressure environment is formed inside the cup body 1 to temporarily store menstrual blood.

[0048] During drainage, gently pry open the folds of skin at the opening of the passage with your fingers, applying a slight pull away from the vent 4. Due to the physical connection between the skin and the cavity wall, the cavity wall shifts slightly as the external skin pulls, causing the vent 4 to detach from the cavity wall and connect with the external atmosphere. The negative pressure above the cup 1 is eliminated, and the menstrual blood collected inside is discharged through the drain tube 2 and the leak vent 3 under the influence of gravity.

[0049] After drainage is complete, the external skin is loosened, and the cavity wall returns to its original position under its own elasticity, re-sealing the vent 4. The menstrual cup continues to perform its collection function, achieving cyclical use without removal. Compared with the existing operation method that requires squeezing the valve end with fingers, the operation method of this embodiment does not require fingers to touch the end of the drainage tube 2; the fingers only touch the external skin, improving hygiene and simplifying the steps with low learning costs.

[0050] It is worth noting that the skin surrounding the opening of a human body cavity and the cavity wall are continuous soft tissue structures, and the two are physically connected. When the user uses their fingers to push the folds of skin extending outward from the cavity opening, the pulling force is transmitted through the continuous soft tissue into the cavity, causing a slight displacement of the cavity wall located in the lower section of the cavity, thereby detaching it from the contact with the ventilation hole on the side wall of the drain tube. Example

[0051] This embodiment discloses an operating method for an automatic drainage menstrual cup, which solves the technical problem of asynchronous opening during drainage in a dual-hole structure.

[0052] The automatic menstrual cup with drainage function as described in Example 5 (see reference) is used. Figure 5 and Figure 7 (Structure) The menstrual cup is inserted into the human cavity. During the insertion process, the side of the drain tube 2 with the vent 4 and the leakage port 3 is consciously facing the cavity wall so that both are tightly sealed by the cavity wall on that side.

[0053] During drainage, locate the skin folds extending from the channel openings on the sides corresponding to the two holes, and apply traction with your fingers to the same side. This traction causes the entire wall of the cavity on that side to detach from the side wall of the drainage tube 2, simultaneously exposing the vent 4 and the drain outlet 3. External air enters the space above the cup body 1 through the vent 4, while blood is discharged through the drain outlet 3. After drainage is complete, remove the traction, and the cavity walls will spring back and re-close the two holes.

[0054] The operation method of this embodiment achieves precise synchronous opening of the two holes through directional insertion and directional pulling, resulting in faster drainage speed and less likelihood of air blockage, fully leveraging the advantages of fluid dynamics design. Example

[0055] This embodiment discloses an operating method for an automatic drainage menstrual cup, providing an alternative drainage method that does not require pulling on the cavity wall.

[0056] Using any one of the automatic drainage menstrual cups described in Examples 1 to 5, the menstrual cup is placed into the human body cavity, so that the vent 4 is sealed against the wall of the human body cavity, and menstrual blood is temporarily stored in the cup body 1. Since the drainage tube 2 is made of flexible material, its sidewall curvature changes when it is bent and deformed. The area of ​​the vent 4, which was originally in close contact with the cavity wall, is raised or gaps are formed due to the bending of the tube body, causing the vent 4 to detach from the cavity wall.

[0057] During drainage, pinch the lower end of the drainage tube 2 located near the opening of the channel with your fingers and apply lateral force to bend and deform the drainage tube 2. Since the drainage tube 2 is made of flexible material, the bending deformation causes the curvature of its side wall to change. The area of ​​the vent 4, which was originally close to the cavity wall, will lift up or create gaps due to the bending of the tube, causing the vent 4 to detach from the cavity wall and connect with the external atmosphere. After the air pressure inside the cup 1 is balanced, the menstrual blood will be discharged from the drain 3 along the lumen.

[0058] After drainage is complete, release your finger, and the drainage tube 2 will return to its straight state due to the elasticity of the material, and the vent 4 will re-adhere to the cavity wall and seal. The operation method of this embodiment provides users with another option. When it is not appropriate or desired to pull on the external skin, drainage can be achieved by directly bending the lower end of the drainage tube 2, similar to pinching a straw, further improving the flexibility of use and privacy protection.

[0059] This invention is not limited to the optional embodiments described above, and anyone can derive other various forms of products based on the inspiration of this invention. The specific embodiments described above should not be construed as limiting the scope of protection of this invention; the scope of protection of this invention should be determined by the claims, and the specification can be used to interpret the claims.

Claims

1. An automatic draining menstrual cup, comprising a cup body (1) and a drain pipe (2) communicating with the bottom of the cup body (1), wherein during installation, the cup body (1) is inserted into the human body cavity and the drain pipe (2) is positioned outward; characterized in that: The drain pipe (2) is provided with a leak outlet (3), and the surface of the cup body (1) or the drain pipe (2) is provided with a vent hole (4). The vent hole (4) is sealed by the wall of the human body cavity when inserted.

2. The automatic menstrual cup according to claim 1, characterized in that: The cup body (1) is bell-shaped or funnel-shaped with an open top and a contracted bottom that is integrally connected with the drain pipe (2). The drain pipe (2) is a tubular structure.

3. The automatic menstrual cup according to claim 2, characterized in that: The vent (4) is located on the lower side wall of the drain pipe (2).

4. The automatic menstrual cup according to claim 2, characterized in that: The drain outlet (3) is located on the lower end face of the drain pipe (2).

5. The automatic menstrual cup according to claim 2, characterized in that: The leakage port (3) is located on the side wall of the drain pipe (2), and a plug (5) is provided on the lower end face of the drain pipe (2). In the inserted state, the leakage port (3) is sealed by the wall of the human body cavity.

6. The automatic menstrual cup according to claim 2, characterized in that: The opening area of ​​the leakage port (3) is larger than the opening area of ​​the vent (4).

7. The automatic menstrual cup according to claim 5, characterized in that: The vent (4) and the drain (3) are spaced apart along the axial direction of the drain pipe (2) on the same side of the drain pipe (2), and the line connecting their centers is parallel to the axis of the drain pipe (2).

8. An operating method, employing an automatic menstrual cup with drainage as described in any one of claims 1-7, characterized in that: The menstrual cup is placed into the human cavity, and the vent (4) is sealed by the wall of the human cavity. When the fluid is drained, the folded skin part extending from the opening of the human cavity is moved to pull the wall of the human cavity, so that the vent (4) is separated from the wall of the human cavity and contacts the external atmospheric environment. The menstrual blood collected in the cup (1) is discharged from the drain (3).

9. An operating method, using the automatic drainage menstrual cup as described in claim 7, characterized in that: The menstrual cup is placed into the human cavity, so that the vent (4) and the drain (3) are both sealed by the wall of the human cavity. When draining, the folded skin part extending from the opening of the human cavity is moved to pull the wall of the human cavity, so that the vent (4) and the drain (3) are simultaneously separated from the wall of the human cavity, and the menstrual blood collected in the cup (1) is discharged from the drain (3).

10. An operating method, employing the automatic drainage menstrual cup according to any one of claims 1-7, characterized in that: The menstrual cup is placed into the human cavity, so that the vent (4) is sealed by the wall of the human cavity. When draining, the lower end of the drain tube (2) is moved to bend and deform it, so that the vent (4) is separated from the wall of the human cavity and connected to the external atmosphere. The menstrual blood collected in the cup (1) is discharged from the drain (3).

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