Breast pump

Abstract

The invention relates to the field of mother and baby products, and provides a breast pump. The breast pump comprises a milk storage container, a breast pumping shield, a negative pressure system, a milk flow path and a flow detector, the milk flow path comprises at least one part of a milk flow path for milk to be discharged into the milk storage container from the milk sucking channel; the flow rate detector is used for detecting the flow rate of the milk passing through the milk flow path in a non-contact manner. According to the breast pump, the milk flow is detected by arranging the flow detector in a mode of not making contact with the milk, so that the milk flow can be accurately measured, the service life of the flow detector is prolonged, and the safety and sanitation of the measuring process of the breast pump are guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of maternal and infant products, and in particular to a breast pump. Background Art

[0002] A breast pump is a tool used to squeeze out the milk accumulated in the mammary glands and store it. It is generally used when the baby cannot suck milk directly, or when the mother has nipple problems but still wants to breastfeed.

[0003] In the prior art, milk flow detection of breast pumps is usually achieved by setting optical sensors in the milk flow path of the breast pump, such as on a one-way valve, to realize the flow detection function. However, since the related accessories need to be cleaned and disinfected, on the one hand, it is easy to damage the service life of the sensor. On the other hand, users can easily disinfect the cleaning parts in a microwave oven, but putting the parts with sensors in a microwave oven is prone to safety accidents. Therefore, the technology related to breast pump flow detection needs to be improved. Summary of the invention

[0004] In view of the shortcomings of the prior art, an object of the present invention is to provide a breast pump that improves the flow detection requirements of the breast pump and is safe and hygienic.

[0005] To solve the above problems, the present invention provides the following technical solutions: a breast pump, comprising: a milk storage container for storing milk; a breast shield, the breast shield comprising a flange that fits the breast and a milk suction channel for accommodating the nipple, the milk suction channel being provided with a milk outlet; a negative pressure system for directly or indirectly applying negative pressure to the milk suction channel to suck out the milk and discharge it into the milk storage container; a milk flow path, comprising at least a portion of the milk flow path for the milk to be discharged from the milk suction channel into the milk storage container; and a flow detector for detecting the flow of milk passing through the milk flow path in a non-contact manner.

[0006] In some embodiments, the milk flow path has an outer wall that does not contact the milk, and the flow detector is disposed on the outer wall or close to the outer wall.

[0007] In some embodiments, the breast pump further includes a one-way valve connected to the milk suction channel, milk flows into the milk storage container through the one-way valve, and the outer side wall of the one-way valve contacts the inner side wall of the milk storage container; the breast pump further includes a main body shell assembled with the milk storage container, and the negative pressure system is arranged in the main body shell; the flow detector is installed on the inner side wall of the main body shell at least aligned with the position of the one-way valve, and / or the flow detector is installed on the outer side wall of the main body shell at least aligned with the position of the one-way valve.

[0008] In some embodiments, the breast pump further comprises a one-way valve connected to the milk suction channel, milk flows into the milk storage container through the one-way valve, and the outer wall of the one-way valve contacts the inner wall of the milk storage container; the flow detector is installed on the outer wall of the milk storage container at least aligned with the position of the one-way valve.

[0009] In some embodiments, the flow detector is detachably mounted on the milk storage container.

[0010] In some embodiments, the position where the inner wall of the milk storage container contacts the outer wall of the one-way valve is inclined.

[0011] In some embodiments, the flow detector is aligned with a narrow end of the one-way valve away from the milk extraction channel.

[0012] In some embodiments, the outer side wall of the main unit housing is in contact with the milk storage container at least corresponding to the position of the one-way valve.

[0013] In some embodiments, the breast pump further comprises a one-way valve; the milk flow path connects the milk suction channel and the one-way valve and is located between the two; at least a portion of the outer wall of the milk flow path is exposed outside the milk storage container.

[0014] In some embodiments, the breast shield is in liquid communication with the milk storage container; the breast pump further comprises a negative pressure chamber and a one-way valve connected to the milk suction channel; the milk flow path is in communication with the negative pressure chamber and the one-way valve and is located between the two; at least a portion of the one-way valve is located in the milk storage container, and milk flows into the milk storage container through the one-way valve; at least a portion of an outer wall of the milk flow path is shared with a side wall of the milk storage container.

[0015] In some embodiments, the breast shield is in liquid communication with the milk storage container; the breast pump further comprises a negative pressure chamber and a one-way valve connected to the milk suction channel; the milk flow path is in communication with the negative pressure chamber and the one-way valve and is located therebetween; at least a portion of the one-way valve is located in the milk storage container, and milk flows into the milk storage container through the one-way valve; at least a portion of the side wall of the milk flow path shares a flow detection section side wall with the side wall of the milk storage container, the flow detection section side wall comprises an inner side wall in contact with milk and an outer side wall not in contact with milk, and the flow detector is mounted on the outer side wall of the flow detection section or arranged close to the outer side wall of the flow detection section.

[0016] In some embodiments, the flow detectors are distributed around the entire circumference or a portion of the outer wall of the milk flow path.

[0017] In some embodiments, the flow detector is detachably mounted on an outer wall of the milk flow path.

[0018] In some embodiments, the flow detectors are distributed around the entire circumference or a portion of the outer side wall of the flow detection section.

[0019] In some embodiments, the milk storage container and the breast shield are assembled and connected, and a gap is provided between the milk storage container and the breast shield, the flow detector is installed in the gap, and the gap is at least aligned with the milk flow path.

[0020] In some embodiments, the breast pump further comprises a one-way valve, and the gap space is at least aligned with the one-way valve.

[0021] In some embodiments, the milk suction channel comprises an inner wall facing the nipple and an outer wall facing away from the nipple, and the flow detector is mounted on the outer wall of the milk suction channel.

[0022] In some embodiments, the flow detector is detachably mounted on the milk extraction channel.

[0023] In some embodiments, the breast pump also includes a main body shell assembled with the breast shield, and the negative pressure system is arranged in the main body shell; the main body shell includes an outer side surface corresponding to the milk suction channel; the flow detector is installed on the outer side surface of the main body shell at least aligned with the position of the milk suction channel.

[0024] In some embodiments, the outer side surface of the main body housing at least contacts the milk suction channel at a position corresponding to the milk suction channel.

[0025] In some embodiments, the flow detector comprises a capacitive sensor including a first capacitive sensor for detecting milk flow.

[0026] In some embodiments, the capacitive sensor further includes a second capacitive sensor for detecting an interference value.

[0027] In some embodiments, the capacitive sensor is a differential capacitive sensor assembly, which includes a two-electrode capacitor and a control circuit; the two-electrode capacitor includes a first electrode and a second electrode arranged opposite to each other; the control circuit is used to charge the two-electrode capacitor and detect the capacitance value of the two-electrode capacitor.

[0028] In some embodiments, the flow detector comprises an acoustic sensor, an ultrasonic sensor, or a laser sensor.

[0029] In some embodiments, the flow detector comprises an optical sensor.

[0030] In some embodiments, the flow detector further comprises a rotating member disposed in the milk flow path, the rotating member being provided with evenly distributed light-transmitting portions or optical blocking portions, and the optical sensor can identify the flow of milk by identifying the optical blocking or light-transmitting frequency of the rotating member.

[0031] In some embodiments, the optical sensor includes an illumination sensor or an infrared sensor.

[0032] In some embodiments, at least a portion of the milk flow path, the milk storage container, or the milk channel corresponding to the flow detector is transparent.

[0033] The beneficial effects of the present invention are as follows: the flow detector of the breast pump of the present invention detects the flow of milk passing through the milk flow path in a non-contact manner with the milk, so that the flow detector and other related electronic components will not contaminate the milk, thereby ensuring the safety and hygiene of the milk; at the same time, when it is necessary to clean the related accessories of the breast pump or put them in a microwave oven for disinfection, damage to the flow detector or safety accidents can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a three-dimensional diagram of a first embodiment of a breast pump of the present invention;

[0035] Figure 2 It is a cross-sectional schematic diagram of a first embodiment of a breast pump of the present invention;

[0036] Figure 3 It is a cross-sectional schematic diagram of a second embodiment of a breast pump of the present invention;

[0037] Figure 4 This is a front view of a main body housing of a second embodiment of a breast pump of the present invention;

[0038] Figure 5 It is a cross-sectional schematic diagram of a third embodiment of a breast pump of the present invention;

[0039] Figure 6 It is a cross-sectional schematic diagram of a fourth embodiment of a breast pump of the present invention;

[0040] Figure 7 for Figure 6 Simple expression diagram of ;

[0041] Figure 8 is a cross-sectional schematic diagram of an embodiment of a milk flow path of the present invention;

[0042] Fig. 9 is a cross-sectional schematic diagram of another embodiment of the milk flow path of the present invention;

[0043] Fig.10 It is a cross-sectional view of a fifth embodiment of a breast pump of the present invention;

[0044] Fig.11 for Fig.10 Simple expression diagram of ;

[0045] Fig.12 It is a schematic diagram of a sixth embodiment of a breast pump of the present invention;

[0046] Fig.13 It is a schematic diagram of a seventh embodiment of a breast pump of the present invention;

[0047] Fig.14 It is a schematic diagram of an eighth embodiment of a breast pump of the present invention;

[0048] Fig.15 It is a schematic diagram of a ninth embodiment of a breast pump of the present invention;

[0049] Fig.16 It is a schematic diagram of the rotating component of the present invention.

[0050] Reference numerals:

[0051] 100, breast pump; 101, main unit; 110, milk storage container; 111, breast shield; 121, flange; 12a, milk suction channel; 12b, milk outlet; 112, negative pressure system; 11a, milk flow path; 113, flow detector; 114, diaphragm; 115, one-way valve; 12c, milk inlet; 11b, outer wall; 116, negative pressure chamber; 117, main unit housing; 122, air pump; 13a, narrow end; 141, inner wall of main unit housing; 142, outer wall of main unit The outer wall of the housing; 143, the outer wall of the milk storage container; 144, the inner wall of the milk storage container; 131, the capacitance sensor; 151, the first electrode; 152, the second electrode; 132a, the transmitting end of the ultrasonic sensor; 132b, the receiving end of the ultrasonic sensor; 133, the optical sensor; 161, the side wall of the detection section; 12d, the gap; 181, the rotating member; 191, the light-transmitting part; 192, the shielding part; 15a, the first capacitance sensor; 15b, the second capacitance sensor. 12f, the outer wall of the milk suction channel; 117a, the outer side of the housing of the main unit. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar units or units with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. In addition, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0053] In the description of the present invention, it is necessary to understand that the orientation or positional relationship indicated by terms such as "length", "width", "up", "down", "left", "right", "horizontal", "top" and "bottom" are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two units or the interaction relationship between two units. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0057] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the examples of various specific processes and materials provided by the present invention, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0058] like Figure 1-14 As shown, the breast pump 100 of the present application includes a breast shield 111, a milk storage container 110 and a host 101. The breast shield 111, the milk storage container 110 and the host 101 can be detachably assembled into an integrated structure or a split structure, and the present application does not limit the integrated structure or the split structure.

[0059] The breast shield 111 is used to cover the human breast and fit the breast. The breast shield includes a trumpet-shaped flange 121 for fitting the breast, and a milk suction channel 12a for accommodating the nipple. The milk suction channel is provided with a milk outlet 12b, and milk can flow into the milk storage container 110 through the milk outlet.

[0060] The milk storage container is used to receive and store the milk collected by the breast shield, and the milk storage container is in fluid communication with the breast shield.

[0061] Optionally, the milk storage container includes a milk cap, a milk bowl, a milk bottle, etc., which is not limited in this application.

[0062] The host 101 is also provided with a negative pressure mechanism 112, which can directly or indirectly apply negative pressure to the breast shield to pump breast milk into a milk storage container. Directly applying negative pressure to the milk suction channel is to directly connect the negative pressure mechanism 112 to the milk suction channel through an air tube to generate negative pressure, so as to pump milk and store it in the milk storage container; indirectly applying negative pressure to the milk suction channel is to first transfer the negative pressure to a deformable gas-liquid separation component, such as a diaphragm 114 or an air bag, and then indirectly apply negative pressure to the milk suction channel through the vibration or deformation of the diaphragm or the air bag to pump milk and store it in the milk storage container.

[0063] Negative pressure mechanisms include, but are not limited to, air pumps, piezoelectric pumps, diaphragm pumps, hydraulic pumps, mechanical pumps, etc., and this application does not impose any restrictions.

[0064] Optionally, the host 101 may also include one or more components such as a power supply module, a negative pressure air circuit, a control circuit board, and a solenoid valve.

[0065] In the present application, in order to allow the milk collected from the breast shield to flow into the milk storage container, the breast pump of the present application further comprises a milk flow path 11a, wherein the milk flow path comprises at least a portion of the milk flow path through which the milk is discharged from the milk suction channel into the milk storage container;

[0066] The breast pump of the present application further comprises a flow detector 113 for detecting the flow of milk passing through the milk flow path in a non-contact manner with the milk.

[0067] Optionally, the flow detector in this embodiment includes a capacitive sensor, an acoustic sensor, an ultrasonic sensor, a laser sensor, and an optical sensor. Among them, the milk flow path or the milk storage container or the milk channel at least corresponding to the position of the optical sensor or the laser sensor is set to be transparent, so that the detection light emitted by the optical sensor or the laser sensor can pass through; further, the optical sensor includes an illumination sensor or an infrared sensor.

[0068] According to the above scheme, the acoustic sensor usually uses the propagation characteristics of sound or vibration to detect the flow of milk in the milk flow path. It can monitor the sound or vibration generated when the milk passes through the pipe, and infer the milk flow in the milk flow path based on the changes in the sound characteristics. When the milk passes through the milk flow path, the noise spectrum generated by the milk flow can be analyzed by analyzing the sound or vibration generated by the milk passing through the acoustic sensor, so as to further obtain the milk flow. Since the acoustic sensor is easily affected by external noise, such as environmental noise or other mechanical vibrations, multiple groups of settings can be performed around the entire circumference of the milk flow path during the actual installation process. The parameters obtained simultaneously by multiple groups of acoustic sensors are integrated to obtain a more accurate milk flow.

[0069] The present application is described in detail below based on specific embodiments.

[0070] Embodiment 1:

[0071] Please refer to Figures 1-2 As shown, it is the first embodiment provided by the present application, the breast pump 100 comprises: a milk storage container 110, a breast shield 111, a host 101, a milk flow path 11a and a flow detector 113; wherein the milk storage container is used to store milk sucked from a human breast; the breast shield 111 comprises a flange 121 fitted with the breast and a milk suction channel 12a for accommodating a nipple, the milk suction channel is provided with a milk outlet 12b, and milk can flow into the milk storage container through the milk outlet.

[0072] The host 101 includes a host housing 117, in which a negative pressure system 112 is provided. The negative pressure system applies negative pressure to the milk suction channel directly or indirectly to suck out the milk and discharge it into a milk storage container; the milk flow path includes at least a part of the milk flow path in which the milk is discharged from the milk suction channel into the milk storage container.

[0073] Optionally, in the first embodiment, the milk storage container, the main unit and the breast shield of the breast pump are an integrated detachable assembly structure.

[0074] According to the above scheme, it can be understood that the milk flow path 11a at least includes a part of the milk flow path through which the milk is discharged from the milk suction channel into the milk storage container. It can be understood that in some embodiments, the milk flow path 11a includes all milk flow paths that the milk needs to pass through to be discharged from the milk suction channel into the milk storage container, for example: after the milk is sucked out from the human nipple, it needs to pass through the milk suction channel 12a, and / or the one-way valve 115, and / or the negative pressure chamber 116, and / or the milk inlet 12c of the milk storage container, and the above-mentioned components through which the milk passes are all included in the milk flow path; while in other embodiments, the milk flow path includes the part of the milk flow path that the milk needs to pass through to be discharged from the milk suction channel into the milk storage container, for example: after the milk is sucked out from the human breast, it passes through the milk suction channel 12a and the one-way valve 115 and is discharged into the milk storage container, and the above-mentioned milk flow path includes the milk suction channel, or the one-way valve 115.

[0075] According to the above scheme, it can be understood, please refer to Figures 1-2 As shown, the breast pump further comprises a one-way valve 115 connected to the milk suction channel, and milk flows into the milk storage container through the one-way valve, and the outer side wall of the one-way valve contacts the inner side wall of the milk storage container.

[0076] It can be understood that in this embodiment 1, the milk flow path passes through the one-way valve, and it can be understood that the one-way valve 115 is a part of the milk flow path, and the flow detector 113 is used to detect the flow of milk passing through the milk flow path in a non-contact milk manner, that is, in this embodiment 1, the flow detector is used to detect the flow of milk passing through the one-way valve 115 in a non-contact milk manner.

[0077] In the present application, the main housing 117 includes an inner wall 141 and an outer wall 142 , wherein the inner wall 141 forms an inner cavity for accommodating internal electronic components, such as a negative pressure system or other electronic components. The outer wall 142 of the main housing 117 faces the milk storage container 110 .

[0078] In the first embodiment, the flow detector 113 is installed on the inner side wall 141 of the main housing and is aligned with the position of the one-way valve 115. It can be understood that the flow detector is installed on the inner side wall 141 of the main housing and is aligned with the position of the one-way valve 115. When the milk flows from the one-way valve 115, the flow detector can detect the flow of milk passing through the one-way valve, that is, the flow detector 113 detects the flow of milk passing through the one-way valve 115 in a non-contact manner, thereby ensuring the safety and hygiene of the milk. When the breast pump is not needed, the milk storage container and the breast shield are removed from the main housing, so that the flow detector is separated from the milk storage container and the breast shield, so that the milk storage container and the breast shield can be cleaned, poured out, and sterilized, and the flow detector will not affect any of the aforementioned operating processes, thereby achieving complete non-contact between the flow detector and the milk.

[0079] In this embodiment, preferably, the flow detector 113 is aligned with the narrow end 13a of the one-way valve 115 away from the milk suction channel. The narrow end 13a is the end of the one-way valve 115 away from the milk suction channel 12a. The milk flows through the narrow end, which is more concentrated, stable and uniform, and the measured data is better. At the same time, because the milk needs to undergo a certain degree of rectification process when passing through the one-way valve, the narrow end 13a reduces the turbulence phenomenon, so that the flow detector can obtain more accurate data; in addition, since the narrow end 13a is relatively far away from the direct suction point, it is subject to less pressure fluctuations, which helps to provide a more stable measurement environment.

[0080] In the first embodiment, the flow detector 113 can be configured as a capacitive sensor, an ultrasonic sensor, an acoustic sensor, an optical sensor, or a laser sensor, all of which can detect the flow of milk passing through the one-way valve 115 .

[0081] Embodiment 2

[0082] like Figure 3-Figure 4 As shown, in the second embodiment, the flow detector can be installed on the outer side wall 142 of the main housing at least aligned with the position of the one-way valve.

[0083] In the second embodiment, the outer wall of the one-way valve 115 contacts the inner wall 144 of the milk storage container, and the outer wall 142 of the main housing 117 contacts the outer wall 143 of the milk storage container at least corresponding to the position of the one-way valve 115; preferably, the outer wall of the one-way valve is in close contact with the inner wall of the milk storage container, and the position where the inner wall 144 of the milk storage container contacts the outer wall of the one-way valve 115 is inclined, and the inclination direction is inclined toward the inside of the milk storage container. The continuity and stability of the liquid flow are improved by the inclined design, so that the flow rate of milk is reduced when passing through, the occurrence of turbulence is reduced, and a more stable measurement environment is provided to the flow detector, thereby obtaining more reliable flow data. The outer wall of the main housing at least corresponds to the position of the one-way valve and is in close contact with the milk storage container.

[0084] In the second embodiment, the flow detector is a capacitive sensor 131. The capacitive sensor 131 is a differential capacitive sensor assembly, which includes a dual-electrode capacitor and a control circuit; the dual-electrode capacitor includes a first electrode 151 and a second electrode 152 arranged oppositely; the control circuit is used to charge the dual-electrode capacitor and detect the capacitance value of the dual-electrode capacitor; it can be understood that the first electrode 151 and the second electrode 152 are arranged oppositely and arranged on both sides of the outer wall 142 of the main housing, so that a capacitor is formed between the first electrode 151 and the second electrode 152, and the change of the capacitance value is detected by measuring the charging and discharging characteristics of the capacitor through the control circuit. When no milk passes through, the medium between the first electrode and the second electrode is usually air or other fixed materials. At this time, the capacitor has an initial capacitance value C0. When milk begins to flow through the area between the first electrode and the second electrode, the milk will enter between the two electrodes and replace the original medium. Since milk has a certain dielectric constant (ε), it will affect the capacitance value of the capacitor. As a new medium, milk changes the effective dielectric constant of the capacitor, thereby changing the capacitance value.

[0085] It can be understood that the control circuit will periodically charge and discharge the capacitor formed by the first electrode 151 and the second electrode 152. As the milk flow changes, the volume of the dielectric in the capacitor changes, causing the capacitance value to change accordingly. By continuously monitoring the change in the capacitance value, the milk flow can be measured.

[0086] like Figure 4As shown, in the second embodiment, the capacitive sensor includes a first capacitive sensor 15a for detecting milk flow and a second capacitive sensor 15b for detecting interference value. It can be understood that the second capacitive sensor in the present embodiment is used to detect the interference value of the milk stored in the milk storage container to the milk on the milk flow path whose flow needs to be detected. By comparing the capacitance value changes of the two capacitors, a differential signal can be obtained. This differential signal reflects the change of the measured physical quantity, and can effectively eliminate some common mode interference, so that the milk stored in the milk storage container will not affect the work of the first capacitive sensor on the milk on the milk flow path, thereby improving the accuracy of the milk flow measurement.

[0087] In other cases of this embodiment, the flow detector can also be extended from the inner wall of the main body shell to the outer wall, which is conducive to the convenient electrical connection of the capacitive sensor.

[0088] Embodiment 3

[0089] like Figure 5 As shown, in the third embodiment, the flow detector 113 is installed on the outer side wall 143 of the milk storage container at least aligned with the position of the one-way valve 115, that is, the flow detector 113 detects the flow of milk passing through the one-way valve 115 in a non-contact manner to ensure the safety and hygiene of the milk. The flow detector 113 is also detachably installed on the outer side wall of the milk storage container. When the breast pump is not needed, the milk storage container can be removed from the main housing, and the flow detector is then detached from the milk storage container, so that the milk storage container can be cleaned, poured out, and sterilized, thereby achieving complete non-contact and pollution-free between the flow detector and the milk, further ensuring the convenience of cleaning the breast pump.

[0090] In the third embodiment, the flow detector 113 is configured as an ultrasonic sensor. The ultrasonic sensor includes a transmitting end 132a for transmitting signals and a receiving end 132b for receiving signals. The transmitting end of the ultrasonic sensor is a piezoelectric ultrasonic sensor assembly, which includes a piezoelectric ceramic substrate that vibrates to generate ultrasonic waves and an electrode that applies current to the piezoelectric ceramic substrate to vibrate the piezoelectric ceramic substrate; the receiving end is used to receive ultrasonic waves reflected from the transmitting end and returned after encountering an obstacle, so as to convert the ultrasonic waves into electrical signals. In the present application, the ultrasonic sensor is not limited to the structure described above.

[0091] The ultrasonic sensor uses the change in ultrasonic frequency to measure the flow rate. When ultrasonic waves encounter flowing particles, the frequency of the reflected waves will change due to the Doppler effect. It can detect the milk flow based on the flowing particles that are fed back to the ultrasonic sensor when the milk flows through the milk flow path. When the milk passes through the milk flow path, the ultrasonic waves emitted by the ultrasonic sensor come into contact with the milk and feed back different frequencies, thereby obtaining a more accurate milk flow rate.

[0092] Embodiment 4:

[0093] like Figure 6-8 In the fourth embodiment, the milk storage container 110 of the breast pump can be detachably assembled below the main unit 101, and the breast shield can be detachably assembled on the milk storage container 110. The breast pump further includes a one-way valve 115 partially or completely located in the milk storage container, the milk flow path 11a connects the milk suction channel 12a and the one-way valve 115 and is located between the two, the milk flow path has an outer wall 11b that does not contact the milk, and at least a part of the outer wall 11b of the milk flow path 11a is exposed outside the milk storage container 110. It can be understood that the outer wall of the milk flow path exposed outside the milk storage container in this embodiment does not contact the milk, and the flow detector 113 is arranged on the outer wall 11b of the milk flow path exposed to the milk storage container or is arranged near the outer wall 11b of the milk flow path exposed to the milk storage container, so that the flow detector 113 detects the flow of milk passing through the milk flow path 11a in a non-contacting manner to ensure the safety and hygiene of the milk.

[0094] Please refer to Figure 8 and Fig. 9 As shown, in different implementations, the flow detector 113 is distributed around the entire circumference or a portion of the outer wall 11b of the milk flow path 11a, and can be configured in coordination with the structures of different models of breast pumps to maximize the detection accuracy of the flow detector on breast pumps with different signals.

[0095] It is understandable that in the fourth embodiment, the flow detector can be set as a capacitive sensor or an ultrasonic sensor, or an optical sensor. As shown in the figure, the flow detector is set as an optical sensor, and the milk flow path is transparent at least at the position corresponding to the flow detector.

[0096] Similarly, if the flow detector is installed on the milk storage container or the milk channel, and the flow detector is configured as an optical sensor, at least the position of the milk storage container or the milk channel corresponding to the flow detector is also transparent.

[0097] Embodiment five:

[0098] like Figure 10-11As shown, in the fifth embodiment, the breast shield 111 of the breast pump 100 is in liquid communication with the milk storage container 110, and the breast pump further comprises a negative pressure chamber 116 and a one-way valve 115 which are in communication with the milk suction channel 12a; the milk flow path 11a is in communication with the negative pressure chamber 116 and the one-way valve 115 and is located therebetween, and at least a portion of the one-way valve 115 is located in the milk storage container 110, and milk flows into the milk storage container 110 through the one-way valve.

[0099] At least part of the side wall of the milk flow path 11a shares a flow detection section side wall 161 with the side wall of the milk storage container. The flow detection section side wall 161 includes an inner side wall that contacts the milk and an outer side wall that does not contact the milk.

[0100] In an embodiment, the side wall of the flow detection section 161 may be the side wall of the milk flow path 11a, and the outer side wall of the side wall of the flow detection section 161 may be the outer wall 11b of the milk flow path. In other embodiments, the side wall of the flow detection section 161 may also be the side wall of the milk storage container 110.

[0101] In the fifth embodiment, the flow detector is installed on the outer wall of the flow detection section 161, and can also be arranged close to the outer wall of the flow detection section 161. The outer wall of the flow detection section 161 does not contact the milk, so that the flow detector 113 detects the flow of milk passing through the milk flow path 11a in a non-contact manner, thereby ensuring the safety and hygiene of the milk.

[0102] In the fifth embodiment, the main unit 101 of the breast pump and the milk storage container 110 are detachably assembled, the negative pressure system 112 is arranged in the main unit housing 117, the diaphragm 114 is installed on the negative pressure chamber 116 of the milk storage container, and the negative pressure chamber 116 is interconnected with the milk suction channel 12a and the one-way valve 115.

[0103] In the fifth embodiment, the flow detector 113 is detachably mounted on the outer wall of the flow detection section 161 or disposed near the outer wall of the flow detection section. When the breast pump is not needed, the flow detector is disassembled so that the flow detector is separated from the milk storage container and the breast shield, so that the milk storage container and the breast shield can be cleaned, poured out, and sterilized, and the flow detector will not affect any of the aforementioned operations. Thus, the flow detector is completely non-contact and non-contamination-free with the milk, and the breast pump is further ensured to be easy to clean.

[0104] It can be understood that in the fifth embodiment, the flow detector can be set as a capacitive sensor or an ultrasonic sensor, or an optical sensor.

[0105] Embodiment 6,

[0106] like Fig.12As shown, in the sixth embodiment, the milk storage container 110 and the breast shield 111 are assembled and connected, and a gap space 12d is provided between the milk storage container and the breast shield, and a flow detector 113 is installed in the gap space 12d, and the gap space 12d is at least aligned with the milk flow path 11a; further, the breast pump also includes a one-way valve 115, and the gap space 12d is at least aligned with the one-way valve 115, so that the flow detector 113 installed at the gap space can detect the flow of milk passing through the one-way valve 115.

[0107] In the sixth embodiment, the gap 12d does not contact the milk, so that the flow detector 113 can detect the flow of milk passing through the milk flow path 11a in a non-contact manner, thereby ensuring the safety and hygiene of the milk.

[0108] It can be understood that in this sixth embodiment, the flow detector can be set as a capacitive sensor or an ultrasonic sensor, or an optical sensor.

[0109] Embodiment 7

[0110] like Fig.13 As shown, the main unit 101 of the breast pump, the milk storage container 110 and the breast shield 111 can be disassembled and assembled, and the negative pressure system 112 is arranged in the main unit housing 117. The breast shield 111 includes a flange 121 that fits the breast and a breast suction channel 12a that accommodates the nipple, and the breast suction channel 12a is provided with a milk outlet. The breast suction channel 12a includes an inner wall facing the nipple and an outer wall 12f facing away from the nipple. The flow detector 113 is installed on the outer wall 12f of the breast suction channel to detect the milk passing through the breast suction channel 12a in a non-contact manner to ensure the safety and hygiene of the milk. It can be understood that in this embodiment, the flow detector installed on the breast suction channel 12a is a detachable assembly, so that when the breast pump is not in use, the flow detector can be removed from the breast suction channel, so that the breast suction channel can be cleaned and disinfected.

[0111] It can be understood that in this sixth embodiment, the flow detector can be set as a capacitive sensor or an ultrasonic sensor, or an optical sensor.

[0112] Embodiment 8

[0113] like Fig.14 As shown, the main unit 101 of the breast pump, the milk storage container 110 and the breast shield 111 can be disassembled and assembled, and the negative pressure system 112 is arranged in the main unit housing 117. The main unit housing 117 includes an outer side surface 117a corresponding to the milk suction channel 12a; the flow detector 113 is installed on the outer side surface 117a of the main unit housing at least aligned with the position of the milk suction channel 12a, so as to detect the milk passing through the milk suction channel 12a in a non-contact manner, thereby ensuring the safety and hygiene of the milk.

[0114] It can be understood that in this sixth embodiment, the flow detector can be set as a capacitive sensor or an ultrasonic sensor, or an optical sensor.

[0115] Embodiment 9

[0116] like Figure 15-16 As shown, the breast pump comprises a breast shield 111, a one-way valve 115 and a milk flow path 11a, wherein the milk flow path 11a is connected to the milk suction channel 12a and the one-way valve 115 and is located between the two;

[0117] At least a portion of the outer wall 11b of the milk flow path is exposed outside the milk storage container.

[0118] A flow detector 113 is provided on the outer wall 11b of the milk flow path for detecting the milk passing through the milk suction channel 12a in a non-contact manner to ensure the safety and hygiene of the milk.

[0119] In the ninth embodiment, the flow detector is an optical sensor 133, and a rotating member 181 is provided in the milk flow path 11a. The rotating member 181 is provided with evenly distributed light-transmitting parts 191 and non-light-transmitting shielding parts 192. When the rotating member 181 is impacted and rotated by milk, the light-transmitting part 191 and the optical sensor 133 are located in a straight line, and the light of the optical sensor passes through the light-transmitting part 191. The optical sensor can identify the flow of milk by identifying the optical shielding or light transmission frequency of the rotating member.

[0120] In this embodiment, the optical sensor 133 is an illumination sensor, and may also be an infrared sensor.

[0121] It can be understood that in this embodiment, the optical sensor mounted on the outer wall 11b is detachably assembled, so that when the breast pump is not in use, the optical sensor can be removed from the outer wall 11b, so that the accessories related to the breast pump can be cleaned and disinfected.

[0122] In summary, the present invention provides a breast pump, which further upgrades breast pumps and other related products, by setting a flow detector to detect milk flow without contacting milk, so that the milk flow can be accurately measured, and the service life of the flow detector is increased, ensuring the safety and hygiene of the breast pump measurement process.

[0123] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A breast pump, characterized in that: include: Milk storage container, used to store breast milk; A breast shield, the breast shield comprising a flange that fits the breast and a milk suction channel that accommodates the nipple, the milk suction channel being provided with a milk outlet; A negative pressure system for directly or indirectly applying negative pressure to the milk extraction channel to extract the milk and discharge it into the milk storage container; a milk flow path, comprising at least a portion of a milk flow path through which milk is discharged from the milk suction channel into the milk storage container; The flow detector is used for detecting the flow of milk passing through the milk flow path in a non-contact manner with the milk.

2. The breast pump according to claim 1, characterized in that: The milk flow path has an outer wall that does not contact the milk, and the flow detector is arranged on the outer wall or close to the outer wall.

3. The breast pump according to claim 1, characterized in that: The breast pump further comprises a one-way valve connected to the milk suction channel, milk flows into the milk storage container through the one-way valve, and the outer side wall of the one-way valve contacts the inner side wall of the milk storage container; The breast pump further comprises a main body shell assembled with the milk storage container, and the negative pressure system is arranged in the main body shell; The flow detector is installed on the inner wall of the main housing and is at least aligned with the position of the one-way valve, and / or the flow detector is installed on the outer wall of the main housing and is at least aligned with the position of the one-way valve.

4. The breast pump according to claim 1, characterized in that: The breast pump further comprises a one-way valve connected to the milk suction channel, milk flows into the milk storage container through the one-way valve, and the outer side wall of the one-way valve contacts the inner side wall of the milk storage container; The flow detector is mounted on the outer side wall of the milk storage container and is at least aligned with the position of the one-way valve.

5. The breast pump according to claim 4, characterized in that: The flow detector is detachably mounted on the milk storage container.

6. The breast pump according to claim 3 or 4, characterized in that: The position where the inner wall of the milk storage container contacts the outer wall of the one-way valve is inclined.

7. The breast pump according to claim 3 or 4, characterized in that: The flow detector is aligned with the narrow end of the one-way valve away from the milk suction channel.

8. The breast pump according to claim 3, characterized in that: The outer side wall of the main unit housing at least contacts the milk storage container at a position corresponding to the one-way valve.

9. The breast pump according to claim 2, characterized in that: The breast pump further includes a one-way valve; the milk flow path communicates with the milk suction channel and the one-way valve and is located between the two; At least a portion of the outer wall of the milk flow path is exposed outside the milk storage container.

10. The breast pump according to claim 2, characterized in that: The breast shield is in liquid communication with the milk storage container; the breast pump further comprises a negative pressure chamber and a one-way valve connected to the milk suction channel; the milk flow path is in communication with the negative pressure chamber and the one-way valve and is located between the two; At least part of the one-way valve is located in the milk storage container, and milk flows into the milk storage container through the one-way valve; At least part of the outer wall of the milk flow path is shared with the side wall of the milk storage container.

11. The breast pump according to claim 1, characterized in that: The breast shield is in liquid communication with the milk storage container; the breast pump further comprises a negative pressure chamber and a one-way valve connected to the milk suction channel; the milk flow path is in communication with the negative pressure chamber and the one-way valve and is located between the two; At least part of the one-way valve is located in the milk storage container, and milk flows into the milk storage container through the one-way valve; At least a portion of the side wall of the milk flow path shares a flow detection section side wall with the side wall of the milk storage container, the flow detection section side wall includes an inner side wall that contacts the milk and an outer side wall that does not contact the milk, and the flow detector is installed on the outer side wall of the flow detection section or is arranged close to the outer side wall of the flow detection section.

12. The breast pump according to claim 2, characterized in that: The flow detectors are distributed on the entire circumference or a portion of the outer wall of the milk flow path.

13. The breast pump according to claim 11, characterized in that: The flow detectors are distributed on the entire circumference or a portion of the outer side wall of the flow detection section.

14. The breast pump according to claim 2, characterized in that: The flow detector is detachably mounted on the outer wall of the milk flow path.

15. The breast pump according to claim 1, characterized in that: The milk storage container and the breast shield are assembled and connected, and a gap is provided between the milk storage container and the breast shield. The flow detector is installed in the gap, and the gap is at least aligned with the milk flow path.

16. The breast pump according to claim 15, characterized in that: The breast pump further comprises a one-way valve, and the gap space is at least aligned with the one-way valve.

17. The breast pump according to claim 1, characterized in that: The milk suction channel comprises an inner wall facing the nipple and an outer wall facing away from the nipple, and the flow detector is mounted on the outer wall of the milk suction channel.

18. The breast pump according to claim 12, characterized in that: The flow detector is detachably mounted on the milk suction channel.

19. The breast pump according to claim 1, characterized in that: The breast pump further comprises a main body shell assembled with the breast shield, and the negative pressure system is arranged in the main body shell; The mainframe housing includes an outer side surface corresponding to the milk suction channel; The flow detector is mounted on the outer side of the mainframe housing and is at least aligned with the position of the milk suction channel.

20. The breast pump according to claim 19, characterized in that: The outer side surface of the main unit housing at least corresponds to the position of the milk suction channel and contacts the milk suction channel.

21. The breast pump according to claim 1, characterized in that: The flow detector includes a capacitive sensor including a first capacitive sensor for detecting milk flow.

22. The breast pump according to claim 21, characterized in that: The capacitive sensor further includes a second capacitive sensor for detecting an interference value.

23. A breast pump according to claim 21 or 22, characterized in that: The capacitive sensor is a differential capacitive sensor assembly, and the differential capacitive sensor assembly includes a dual-electrode capacitor and a control circuit; The dual-electrode capacitor comprises a first electrode and a second electrode arranged opposite to each other; The control circuit is used to charge the dual-electrode capacitor and detect the capacitance value of the dual-electrode capacitor.

24. The breast pump according to claim 1, characterized in that: The flow detector includes an acoustic sensor, an ultrasonic sensor or a laser sensor.

25. The breast pump according to claim 1, characterized in that: The flow detector includes an optical sensor.

26. The breast pump according to claim 25, characterized in that: The flow detector further comprises a rotating member disposed in the milk flow path, wherein the rotating member is provided with evenly distributed light-transmitting parts and non-light-transmitting shielding parts, and the optical sensor can identify the flow of milk by identifying the optical shielding or light-transmitting frequency of the rotating member.

27. The breast pump according to claim 25, characterized in that: The optical sensor includes an illumination sensor or an infrared sensor.

28. A breast pump according to claim 24 or 25, characterized in that: At least a position of the milk flow path, the milk storage container or the milk channel corresponding to the flow detector is transparent.

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