A breast pump structure

Abstract

The utility model belongs to the technical field of maternal and infant articles, especially relate to breast pump structure, first set up the maximum negative pressure value of suction pump stop working, and the minimum negative pressure value of starting again, control system controls suction pump to start to discharge the air in storage milk cavity, makes storage milk cavity to be in the negative pressure state, and air pressure detection device detects the negative pressure value in storage milk cavity, and the negative pressure value reaches the maximum negative pressure value of setting, and suction pump stops working, and the negative pressure acts on breast, and the milk is sucked out and is stored in storage milk cavity, and fills storage milk cavity, makes storage milk cavity negative pressure value to reduce, and air pressure detection device detects the air pressure in storage milk cavity reaches the minimum negative pressure value of setting, and control system controls suction pump to start again, and suction pump is from starting to stop for one suction journey, and control system calculates the volume of storage milk cavity remaining through the air volume of each group of suction journey being discharged, and the milk amount of storage milk cavity can be calculated.

Description

Technical Field

[0001] This utility model belongs to the field of maternal and infant products technology, and in particular relates to a method for detecting the capacity of a breast pump. Background Technology

[0002] A breast pump is a tool used to express breast milk that has accumulated in the mammary glands. It is generally suitable when the baby cannot suckle directly, or when the mother is separated from the baby but still wishes to breastfeed. Breast pumps typically use an electric or manual negative pressure system to apply negative pressure directly or indirectly to a breast shield or milk storage container that fits against the breast, so that the milk can be drawn into the cavity of the storage container and stored.

[0003] Wearable breast pumps have limited capacity, necessitating real-time monitoring of the milk volume in the storage chamber to prevent milk overflow caused by the pump continuing to operate even when the chamber is full. To overcome this technical problem of the breast pump continuing to operate when the chamber is full, the following prior art discloses a solution to this problem.

[0004] For example, Chinese utility model patent application CN119303175A discloses a breast pump and a differential capacitive sensor assembly, designed to ensure the accuracy of detecting the state parameters of a milk storage container and to guarantee the cleanliness of the milk. It includes: a milk storage container for storing milk and a differential capacitive sensor assembly for detecting the state parameters of the milk storage container; the milk storage container includes a housing, which has an inner surface that contacts the milk and an outer surface that does not; the differential capacitive sensor assembly includes a detection electrode assembly disposed on the outer surface or near the outer surface. Using the differential capacitive sensor assembly to detect the state parameters of the milk storage container is less susceptible to external interference, ensuring the accuracy of the state parameter detection and providing non-contact measurement to guarantee the cleanliness of the milk.

[0005] For example, Chinese utility model patent document CN221845629U discloses a breast pump, including a bottle, a main unit, and a capacitive liquid level sensor. The bottle has a milk storage chamber, the main unit includes a housing assembly with a receiving space, and the capacitive liquid level sensor is located on the main unit to detect the level of milk in the milk storage chamber. The breast pump provided by this utility model, by incorporating a capacitive liquid level sensor, can detect the level of milk in the bottle, and further determine whether the amount of milk in the bottle has reached its maximum limit, thus preventing milk from overflowing from the bottle.

[0006] For example, Chinese utility model patent document CN221787564U discloses a breast pump, including: a breast shield that fits the breast from the front and has a milk collection chamber at the bottom of the back; a milk collection channel inside the breast shield that connects to the front; a one-way valve at the bottom of the milk collection channel that connects to the milk collection chamber; a main unit located on the back of the breast shield, above the milk collection chamber, and connected to the top of the milk collection channel, used to generate negative pressure for milk suction within the milk collection channel; and multiple milk volume detection components located at both ends of the bottom of the main unit for measuring the liquid level height on opposite sides of the milk collection chamber. This utility model solves the technical problem of inaccurate milk volume detection when the breast pump is tilted, failing to detect changes in the breast milk level and thus stopping pumping and providing a warning, leading to breast milk flowing out from the discharge port and wasting breast milk, by incorporating milk volume detection components at both ends of the bottom of the main unit. The ranging components can be infrared ranging, microwave ranging, laser ranging, TOF ranging, or other components with ranging functions.

[0007] The aforementioned existing technical solutions can all address the issue of milk volume stored within the breast pump's internal cavity, preventing milk overflow. However, in actual use, when milk enters the breast pump container, air bubbles are generated. Some of these bubbles adhere to the inner wall of the cavity, affecting the actual liquid level. Furthermore, liquid level sensors and infrared, microwave, laser, and TOF ranging methods cannot accurately detect the liquid level, leading to significant monitoring errors. Additionally, in low-temperature environments, the milk drawn into the cavity experiences a large temperature difference, causing atomization and forming a mist surface on the inner wall of the cavity. This prevents capacitive sensors and ranging devices from detecting the liquid level. Consequently, the amount of milk drawn into the cavity cannot be accurately detected. Utility Model Content

[0008] The purpose of this invention is to provide a breast pump structure that solves the technical problem that existing breast pumps cannot accurately detect the volume of milk in the breast pump cavity.

[0009] To achieve the above objectives, this utility model provides a breast pump structure, which includes a housing, an air pump, an air pressure detection device, and a control system. The housing contains an adsorption chamber and a milk storage chamber, the adsorption chamber being connected to the milk storage chamber. The air pump and the air pressure detection device are connected to the milk storage chamber, and the control system is connected to the air pump and the negative pressure detection device. The air pressure detection device is used to detect the air pressure in the milk storage chamber. The control system includes a metering device for measuring the amount of air discharged by the air pump.

[0010] Furthermore, the metering device includes a time metering module, which is used to calculate the working time of the suction pump.

[0011] Furthermore, the metering device is used to measure the number of times the suction pump is run.

[0012] Furthermore, the metering device includes an air flow detection device disposed between the air pump and the milk storage chamber, and the air flow detection device is connected to the control system.

[0013] Furthermore, the breast pump also includes a communication module, which connects the control system and the terminal server.

[0014] Furthermore, a one-way valve is provided between the adsorption chamber and the milk storage chamber. When the milk storage chamber is under negative pressure, the one-way valve opens.

[0015] Furthermore, the air pressure detection device includes an air pressure sensor.

[0016] The above-mentioned technical solutions in the breast pump structure provided by this utility model embodiment have at least the following technical effects:

[0017] 1. This breast pump's control system activates the suction pump to expel air from the milk storage chamber, creating a negative pressure environment. A pressure detection device monitors the negative pressure within the chamber. When the negative pressure reaches the user-set maximum negative pressure, the suction pump stops. The negative pressure in the storage chamber directly acts on the breast, drawing out milk and storing it within the chamber, gradually reducing the negative pressure. When the pressure detection device detects that the pressure in the storage chamber has reached the user-set minimum negative pressure, the control system restarts the suction pump. Each pump cycle constitutes a complete, independent suction stroke. The control system's metering device calculates the remaining volume of the storage chamber based on the amount of air expelled during each suction stroke, thus determining the milk volume. Specifically, from the time the suction pump restarts until the negative pressure reaches its maximum, the amount of air expelled directly calculates the remaining volume in the storage chamber, indicating the volume already filled and thus the storage chamber's capacity.

[0018] 2. This breast pump uses air displacement to accurately measure the milk volume in the storage chamber. It is unaffected by air bubbles or fogging, and the negative pressure prevents air bubble formation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A cross-sectional view of a breast pump provided in an embodiment of this utility model.

[0021] Figure 2 This is an internal structural diagram of the breast pump provided in an embodiment of the present invention. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0023] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of 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. Therefore, they should not be construed as limitations on this utility model.

[0024] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0026] In one embodiment of the capacity detection method for the wearable breast pump of this utility model, specifically, this detection method is used to detect the amount of milk in the milk storage chamber of the breast pump, so as to avoid the problem of milk overflowing when the milk reaches the maximum volume.

[0027] Specifically, refer to Figure 1 and Figure 2 The breast pump includes a housing 100, an air pump 200, an air pressure detection device 300, and a control system (not shown in the figures). The housing 100 has an adsorption chamber 101 and a milk storage chamber 102, which are connected. The adsorption chamber 101 adheres to the breast, forming a sealed cavity through the fit between the breast and the adsorption chamber 101. The air pump 200 and the air pressure detection device 300 are connected to the milk storage chamber 102, and the control system is connected to the air pump 200 and the negative pressure detection device 300. The control system includes a metering device (not shown in the figures), which is used to directly or indirectly measure the amount of air discharged by the air pump 200. Preferably, the air pressure detection device 300 includes an air pressure sensor, and the control system includes a control circuit and a battery. The control circuit controls the start of the air pump 200 and receives and processes signals from the air pressure sensor to make control decisions, which are conventional techniques in the art and will not be elaborated upon in this embodiment.

[0028] In the above embodiment, during breast pumping, the control system activates the suction pump 200 to expel air from the milk storage chamber 102, creating a negative pressure state. The air pressure detection device 300 detects the negative pressure value within the milk storage chamber 102. When the negative pressure reaches the user-set maximum negative pressure value, the suction pump 200 stops working, and the negative pressure acts on the breast, drawing out milk and storing it in the milk storage chamber 102, filling it. Simultaneously, the negative pressure value in the milk storage chamber 102 decreases. When the air pressure detection device 300 detects that the air pressure within the milk storage chamber 102 has reached the user-preset minimum negative pressure value, the control system activates the suction pump 200 again. Each suction pump cycle from start to stop constitutes one suction stroke. The control system's metering device measures the amount of air expelled during each suction stroke to calculate the remaining volume of the milk storage chamber. Specifically, from the restart of the suction pump 200 until the negative pressure in the milk storage chamber 102 reaches its maximum negative pressure value, the remaining volume of the milk storage chamber 102 can be directly calculated from the amount of air expelled. This allows us to determine the volume of the milk storage chamber 102 and thus its capacity. When the capacity reaches the limit, the milk storage chamber 102 depressurizes to prevent milk overflow. Because this breast pump's capacity detection method uses the air expulsion volume to determine the milk volume in the milk storage chamber 102, it can accurately calculate the specific capacity. It is not affected by air bubbles or fogging, and the negative pressure prevents air bubble formation. In this implementation, a maximum negative pressure of -30 kPa and a minimum negative pressure of -10 kPa are used as examples. Specifically, when the air pressure detection device 300 detects that the negative pressure value in the milk storage chamber 102 reaches -30 kPa, the suction pump 200 stops working; when it detects that the milk storage chamber 102 has depressurized to -10 kPa, the suction pump 200 restarts. The maximum and minimum negative pressure values ​​can be set according to the user's actual needs.

[0029] Furthermore, to further prevent milk overflow, a one-way valve 400 is provided between the adsorption chamber 101 and the milk storage chamber 102. When a negative pressure is formed in the milk storage chamber 102, the one-way valve 400 opens, thus preventing milk from flowing back into the adsorption chamber 101.

[0030] Furthermore, one embodiment of the control system measures the amount of air expelled during each suction stroke. Specifically, the air expelled from the milk storage chamber during each suction stroke is calculated based on the start-up time of the suction pump 200. For example, the specific airflow rate is obtained by multiplying the amount of air expelled by the suction pump 200 per unit time by the duration. The metering device in this embodiment includes a time metering module, which measures the start-up time of the suction pump 200. The time metering module is a conventional technology in circuit control and will not be elaborated upon in this embodiment.

[0031] Furthermore, another embodiment of the control system's metering device calculates the amount of air expelled during each suction stroke. Specifically, the number of times the suction pump 200 is activated during each suction stroke is used to calculate the air expelled from the milk storage chamber 102 during that suction stroke. In particular, one complete cycle of the suction pump 200's operation is considered as one activation, and the air flow rate is measured by the number of cycles.

[0032] Furthermore, in another embodiment, the control system calculates the amount of air expelled during each suction stroke. The metering device includes an airflow detection device 500 disposed between the suction pump 200 and the milk storage chamber 102, the airflow detection device 500 including an airflow meter. The airflow detection device 500 is connected to the control system. The airflow detection device 500 monitors the amount of air extracted during each suction stroke.

[0033] Furthermore, the metering device of the control system detects that the air volume of two adjacent suction strokes is the same or nearly the same, and the breast pump stops operating. Specifically, when it detects that the amount of air discharged in each stroke is the same or nearly the same, it can be determined that no milk has entered the milk storage chamber 102, and the breast pump is controlled to stop.

[0034] Furthermore, referring to Figure 2 The breast pump also includes a communication module 600, which connects to the control system and a terminal server. The control system controls the communication module 600 to send the volume parameters of each pumped milk to the terminal server. The terminal server can be a user's mobile phone, allowing for statistical analysis of the milk parameters collected each time and the development of scientific feeding methods. Alternatively, the terminal server can be a government public service management platform. This platform can connect to various breast pumps, and each pump can send data to the platform, thus providing a general understanding and assessment of the local infant breastfeeding situation.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A breast pump structure, characterized in that, The breast pump includes a housing, an air pump, an air pressure detection device, and a control system; the housing has an adsorption chamber and a milk storage chamber, and the adsorption chamber is connected to the milk storage chamber; the air pump and the air pressure detection device are connected to the milk storage chamber, and the control system is connected to the air pump and the negative pressure detection device; The air pressure detection device is used to detect the air pressure in the milk storage chamber; the control system includes a metering device, which is used to measure the amount of air discharged by the suction pump.

2. The breast pump structure according to claim 1, characterized in that: The metering device includes a time metering module, which is used to calculate the working time of the suction pump.

3. The breast pump structure according to claim 1, characterized in that: The metering device is used to measure the number of times the suction pump runs.

4. The breast pump structure according to claim 1, characterized in that: The metering device includes an air flow detection device disposed between the air pump and the milk storage chamber, and the air flow detection device is connected to the control system.

5. The breast pump structure according to any one of claims 1 to 4, characterized in that: The breast pump also includes a communication module, which connects the control system and the terminal server.

6. The breast pump structure according to any one of claims 1 to 4, characterized in that: A one-way valve is also provided between the adsorption chamber and the milk storage chamber. When the milk storage chamber is under negative pressure, the one-way valve opens.

7. The breast pump structure according to any one of claims 1 to 4, characterized in that: The air pressure detection device includes an air pressure sensor.

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