Breast pump and control method thereof
By combining negative pressure and air vibration mechanisms, and using airflow disturbance to replace mechanical vibration, the problem of insufficient vibration in breast pumps has been solved, improving user comfort and milk expression efficiency, reducing noise, and simplifying the structure.
Patent Information
- Application Number
- CN202511416082.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2025-11-14
AI Technical Summary
The mechanical vibration method in existing breast pumps is not gentle enough, which reduces user comfort.
The system combines a negative pressure mechanism with a pneumatic vibration mechanism. It connects to the nipple channel through a negative pressure air path, applies periodic negative pressure, and uses airflow disturbance to generate vibration, replacing mechanical vibration. The frequency and amplitude of the pneumatic vibration mechanism are controlled to simulate the sucking action of an infant.
It achieves gentle and variable vibration, improving user comfort and milk expression efficiency, reducing noise, and has a simple structure that is easy to manufacture and maintain.
Smart Images
Figure CN120939336A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of breast pump technology, and in particular to a breast pump and a method for controlling the breast pump. Background Technology
[0002] In modern life, breast pumps, as a breastfeeding aid, are widely accepted and used by breastfeeding mothers. Their main function is to extract milk from the breasts using negative pressure, allowing mothers to collect milk on specific occasions for their babies to consume at other times.
[0003] In existing technologies, breast pumps typically use a negative pressure pump to generate negative gas pressure, allowing the diaphragm assembly to move. This reduces the air pressure inside the breast shield, allowing milk to enter and thus enabling milk expression. By controlling the on / off state of a solenoid valve, the negative pressure path of the breast pump can be connected to or isolated from the outside atmosphere, thereby controlling the movement of the diaphragm assembly and the rhythm of milk expression. Additionally, mechanical vibration is often used to vibrate the diaphragm assembly to promote milk production.
[0004] However, mechanical vibration of the diaphragm assembly often results in vibrations that are not gentle enough and lack variation, which reduces user comfort to some extent. Summary of the Invention
[0005] To address the shortcomings of existing technologies, this application provides a breast pump and a control method for the breast pump. A negative pressure mechanism is used to connect to the nipple channel through a negative pressure air path and apply periodic negative pressure directly or indirectly to the nipple channel in a first cycle. An air vibration mechanism is connected to the negative pressure air path and acts intermittently on the negative pressure air path, so that the negative pressure waveform of the negative pressure air path or the negative pressure waveform received by the nipple channel after the action is a composite waveform. This allows the vibration caused by airflow disturbance to replace the mechanical vibration, making the vibration gentler and more variable.
[0006] To address the above problems, the present invention provides the following technical solution: In a first aspect, embodiments of this application provide a breast pump, which includes: a breast shield, a nipple channel, a milk storage container, a control mechanism, a negative pressure mechanism, and an air vibration mechanism; The breast shield is used to accommodate the breast and communicate with the nipple channel; The nipple channel is used to accommodate the nipple and is directly or indirectly connected to the liquid in the milk storage container; The negative pressure mechanism is used to connect to the nipple channel through a negative pressure air path and apply periodic negative pressure directly or indirectly to the nipple channel in a first cycle, so that the negative pressure time change curve applied by the negative pressure mechanism to the nipple channel is a first periodic waveform. The first periodic waveform includes a first peak and a first trough, the secondary peak is lower than the first peak, and the secondary trough is higher than the first trough. The control mechanism is used to control the operation of the negative pressure mechanism; The air vibration mechanism is used to connect with the negative pressure air path and intermittently act on the negative pressure air path, so that the negative pressure waveform of the negative pressure air path after the action or the negative pressure waveform received by the nipple channel is a composite waveform. The period of the composite waveform is the first period. The composite waveform includes: on the basis of the first periodic waveform, at least one secondary wave is generated between at least one adjacent first peak and first trough. The secondary wave includes at least one primary peak and at least one primary trough. The composite waveform causes the nipple channel or the negative pressure airway to vibrate continuously or intermittently.
[0007] In this way, vibration caused by airflow disturbance can replace mechanical vibration, making the vibration gentler and more variable.
[0008] In some embodiments, the control mechanism is used to control the air vibration mechanism to act on the negative pressure air path at a preset frequency during the operation of the negative pressure mechanism, thereby causing gas vibration in the nipple channel or the negative pressure air path; wherein the preset frequency is in the range of [5Hz, 20Hz].
[0009] In some embodiments, the negative pressure mechanism includes one of a negative pressure pump drive mechanism, a magnetic drive mechanism, and a mechanical drive mechanism.
[0010] In some embodiments, the air vibration mechanism changes the negative pressure in the negative pressure air path by drawing gas from the negative pressure air path, and / or the air vibration mechanism changes the negative pressure in the negative pressure air path by supplying gas into the negative pressure air path.
[0011] In some embodiments, the air vibration mechanism includes an atmospheric channel and an opening and closing device. When the opening and closing device is in the open state, the negative pressure air path is connected to the atmosphere through the atmospheric channel; when the opening and closing device is in the closed state, the negative pressure air path is sealed. The control mechanism is used to control the opening and closing frequency of the opening and closing device.
[0012] In some embodiments, the air vibration mechanism further includes a working chamber, and the opening and closing device includes a drive assembly and a seal; the working chamber includes a vent and at least one connection port; the at least one connection port is used to connect to the negative pressure air circuit; The drive component can control the seal to switch between a sealed state that closes the vent and multiple open states corresponding to different degrees of openness of the vent, thereby controlling the opening and closing frequency.
[0013] In some embodiments, the drive assembly can control the seal to switch between a sealed state that closes the vent and multiple open states corresponding to different degrees of openness of the vent, thereby controlling the opening and closing frequency and the opening and closing amplitude.
[0014] In this way, vibration caused by airflow disturbance can be used instead of mechanical vibration, and the frequency and amplitude of the vibration can be easily controlled.
[0015] In some embodiments, the seal includes a resilient sealing ring that protrudes toward the vent.
[0016] This method can improve the sealing of the vent.
[0017] In some embodiments, the drive assembly includes a drive unit that moves the seal to close or open the vent and a power source unit for driving the drive unit to move, the power source unit being controlled by the control mechanism.
[0018] In this way, compared to mechanical vibration, no mechanical vibration structure is needed, which can reduce noise.
[0019] In some embodiments, the power source includes one of an electromagnetic power source, a hydraulic power source, and a pneumatic power source.
[0020] In this way, there are multiple power sources to choose from, allowing for the selection of the appropriate power source for different application scenarios.
[0021] In some embodiments, the drive assembly further includes a reset unit; The reset part is used to restore the seal to a sealed state after the power source stops applying the driving force, and is used to generate different magnitudes of reset force when the seal is in different open states.
[0022] In this way, for different open states, different magnitudes of reset force can make the seal return to the sealed state at different speeds. When the degree of openness is large, the vent can be quickly closed.
[0023] In some embodiments, the reset part includes a spring; When the power source applies a driving force to the drive unit, causing the drive unit to drive the seal to different open states, the spring generates different magnitudes of elastic restoring force. When the power source stops applying driving force to the drive unit, the elastic restoring force of the spring causes the drive unit to move, thereby driving the seal to return to the sealing state.
[0024] In this way, the spring structure is simple, the cost can be reduced, and the air vibration mechanism is easy to manufacture and maintain.
[0025] In some embodiments, the drive unit also includes a stop portion extending from its surface; The first end of the reset part is connected to the blocking part, and the second end of the reset part abuts against the power source part.
[0026] In this way, the drive unit can be simultaneously subjected to the reset force applied by the reset unit to the blocking unit and the driving force applied by the power source unit, so that the drive unit can move the seal to different open states by means of the reset force and the driving force.
[0027] In some embodiments, the power source includes an electromagnet, and the drive unit includes a metal part connected to the seal. When the electromagnet is not energized, the reset part applies pressure to the metal part so that the metal part drives the seal to close the vent. When the electromagnet is energized, it applies a magnetic force to the metal part, driving the metal part to move, so that the seal switches to an open state corresponding to the energizing current of the electromagnet.
[0028] In this way, compared to mechanical vibration, noise can be reduced and the structure can be simplified, making the pneumatic vibration mechanism lighter.
[0029] In some embodiments, the air vibration mechanism includes a first housing and a second housing; the working chamber is disposed in the first housing, and the seal and the drive assembly are disposed in the second housing; The vent is located at the connection between the first shell and the second shell.
[0030] This method allows for easy adjustment of the size of the working chamber, seals, and drive components for different product models during the production process.
[0031] In some embodiments, the first shell and the second shell are detachably connected.
[0032] This approach facilitates large-scale production, reduces assembly complexity, and makes it easier to clean, install, and maintain the air vibration mechanism.
[0033] In some embodiments, the air vibration mechanism further includes a vent that communicates with the atmosphere; When the seal is in the open state, the vent is connected to the vent.
[0034] In this way, when the seal is open, the working chamber can be connected to the atmosphere, thereby making the air pressure in the working chamber equal to the atmospheric pressure.
[0035] Secondly, embodiments of this application provide a control method for a breast pump, the control method comprising: The negative pressure mechanism is controlled to apply periodic negative pressure directly or indirectly to the nipple channel in a first cycle, such that the time variation curve of the negative pressure applied by the negative pressure mechanism to the nipple channel is a first periodic waveform, which includes a first peak and a first trough. During the operation of the negative pressure mechanism, the control air vibration mechanism intermittently acts on the negative pressure air path, so that the negative pressure waveform of the negative pressure air path or the negative pressure waveform received by the nipple channel after the action is a composite waveform. The period of the composite waveform is the first period. The composite waveform includes: on the basis of the first periodic waveform, at least one secondary wave is generated between at least one adjacent first peak and first trough. The secondary wave includes at least one primary peak and at least one primary trough. The secondary peak is lower than the first peak, and the secondary trough is higher than the first trough. The composite waveform causes the nipple channel or the negative pressure airway to vibrate continuously or intermittently.
[0036] Thirdly, embodiments of this application provide a breast pump, the breast pump comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the control method of the breast pump as described in the second aspect.
[0037] The beneficial effects achieved by this application are as follows: the negative pressure mechanism is used to connect to the nipple channel through the negative pressure air path and to apply periodic negative pressure directly or indirectly to the nipple channel in the first cycle; the air vibration mechanism is connected to the negative pressure air path and acts on the negative pressure air path intermittently, so that the negative pressure waveform of the negative pressure air path after action or the negative pressure waveform received by the nipple channel is a composite waveform, which can replace the mechanical vibration with the vibration caused by airflow disturbance, making the vibration gentler and more variable.
[0038] By controlling the opening and closing frequency and amplitude of the vent, the diaphragm assembly of the breast pump can produce a controlled rhythmic movement, rather than a monotonous mechanical vibration. This is gentler on the user's breasts, improves milk expression efficiency, and reduces breast discomfort.
[0039] In addition, the diaphragm assembly can simulate the rhythmic sucking and releasing motions of a baby, making the milk expression process closer to real breastfeeding and thus improving user comfort. Furthermore, the diaphragm assembly can provide a pneumatic massage to the breast, helping to clear milk ducts and promote milk flow, thereby improving milk expression efficiency.
[0040] In addition, compared to the existing mechanical vibration method of motor and gear vibration, it produces less noise during operation, and the assembly of the air vibration mechanism with the breast pump makes the breast pump lighter. Attached Figure Description
[0041] Figure 1 This is a cross-sectional schematic diagram of the first embodiment of the breast pump provided in this application.
[0042] Figure 2 This is a cross-sectional schematic diagram of the second embodiment of the breast pump provided in this application.
[0043] Figure 3 This is a cross-sectional schematic diagram of the third embodiment of the breast pump provided in this application.
[0044] Figure 4 This is a schematic diagram of the negative pressure mechanism provided in this application embodiment when it is a mechanical drive mechanism using a cam.
[0045] Figure 5 This is a three-dimensional structural schematic diagram of the air vibration mechanism provided in the embodiments of this application.
[0046] Figure 6 This is a front view schematic diagram of the air vibration mechanism provided in the embodiments of this application.
[0047] Figure 7 yes Figure 6 A cross-sectional view of the air vibration mechanism at section line AA in a sealed state.
[0048] Figure 8 This is a schematic diagram of the first air pressure fluctuation curve achieved by using a negative pressure pump in the existing technology.
[0049] Figure 9 This is a schematic diagram of the second air pressure fluctuation curve achieved by using a negative pressure mechanism and an air vibration mechanism, as provided in the embodiments of this application.
[0050] Figure 10 This is a schematic diagram of the third air pressure fluctuation curve achieved by using a negative pressure mechanism and an air vibration mechanism, as provided in the embodiments of this application.
[0051] Figure 11 yes Figure 7 A magnified view of point A in the middle.
[0052] Figure 12 yes Figure 6 A cross-sectional view of the air vibration mechanism at section line AA in the open state.
[0053] Figure 13 yes Figure 7 A magnified view of point B in the middle.
[0054] Figure 14 This is an exploded view of the air vibration mechanism provided in the embodiments of this application.
[0055] Figure 15 This is a side view schematic diagram of the air vibration mechanism provided in the embodiments of this application.
[0056] Figure 16 yes Figure 15 Sectional view at section line BB.
[0057] Figure 17 This is a flowchart illustrating the control method for a breast pump provided in an embodiment of this application. Detailed Implementation
[0058] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar units or units having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and should not be construed as limiting the invention. Furthermore, it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
[0059] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit 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 invention.
[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.
[0061] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the communication within two units or the interaction between two units. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0062] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0063] Please see Figure 1 , Figure 1 This is a cross-sectional schematic diagram of the first embodiment of the breast pump provided in this application. Figure 1As shown, in some embodiments, the breast pump 4 includes: a breast shield 461, a nipple channel 462, a milk storage container 47, a control mechanism 41, a negative pressure mechanism 42, and an air vibration mechanism 1. The breast shield 461 is used to accommodate the breast and communicates with the nipple channel 462. The nipple channel 462 is used to accommodate the nipple and communicates directly or indirectly with the milk storage container 47. The negative pressure mechanism 42 is used to connect to the nipple channel 462 through a negative pressure air path and apply periodic negative pressure to the nipple channel 462 directly or indirectly in a first cycle, such that the time variation curve of the negative pressure applied by the negative pressure mechanism 42 to the nipple channel 462 is a first periodic waveform. The first periodic waveform includes a first peak and a first trough. The control mechanism 41 is used to control the operation of the negative pressure mechanism 42. The air vibration mechanism 1 is used to connect to the negative pressure air path and intermittently act on the negative pressure air path, such that the negative pressure waveform of the negative pressure air path after the action or the negative pressure waveform received by the nipple channel 462 is a composite waveform. The period of the composite waveform is the first period as described above. The composite waveform includes, based on the first periodic waveform, at least one secondary wave generated between at least one adjacent first peak and first trough. The secondary wave includes at least one primary peak and at least one primary trough, with the secondary peak lower than the first peak and the secondary trough higher than the first trough. The composite waveform causes continuous or intermittent vibration in the nipple channel or negative pressure airway. In this way, vibration caused by airflow disturbance can replace mechanical vibration, making the vibration gentler and more variable, thus improving user comfort.
[0064] Optionally, the nipple channel 462 is indirectly connected to the milk storage container 47 via a one-way valve 471. The one-way valve 471 is used to allow milk to flow unidirectionally from the nipple channel 462 into the milk storage container 47.
[0065] Alternatively, the nipple channel 462 may also be indirectly connected to the milk storage container 47 via other liquid connection pipes.
[0066] Optionally, the nipple channel 462 is directly connected to and in liquid communication with the milk storage container 47.
[0067] In some embodiments, the control mechanism 41 is used to control the air vibration mechanism 1 to act on the negative pressure air path at a preset frequency during the operation of the negative pressure mechanism 42, thereby causing gas vibration in the nipple channel 462 or the negative pressure air path.
[0068] The operation of the negative pressure mechanism 42 includes applying negative pressure to the negative pressure air passage and stopping applying negative pressure. The negative pressure mechanism 42 operates continuously throughout the entire milk expression process.
[0069] In some embodiments, the negative pressure mechanism transmits negative pressure to a negative pressure chamber in a deformable airbag assembly or diaphragm assembly via a negative pressure air passage, causing the airbag assembly or diaphragm assembly to deform and thereby indirectly applying periodic negative pressure to the nipple channel. In this case, the airbag assembly or diaphragm assembly can also achieve gas-liquid separation.
[0070] In some embodiments, the breast pump 4 includes a control mechanism 41, a negative pressure mechanism 42, a negative pressure chamber 43, and a gas vibration mechanism 1. The negative pressure mechanism 42 is used to apply negative pressure to the negative pressure chamber 43. The control mechanism 41 is used to control the gas vibration mechanism 1 to change the negative pressure in the negative pressure chamber 43 at a preset frequency during the operation of the negative pressure mechanism 42, thereby causing the gas in the negative pressure chamber 43 to vibrate.
[0071] like Figure 1 As shown, optionally, the breast pump 4 also includes a main unit 44 and a diaphragm assembly 45. A negative pressure mechanism 42 is disposed inside the main unit 44. The negative pressure mechanism 42 is used to apply negative pressure to the negative pressure chamber 43, so as to deform the diaphragm assembly 45 and thereby allow the nipple channel 462 to draw milk from the human breast. The negative pressure chamber 43 is connected to the negative pressure air passage.
[0072] In some implementations, the negative pressure mechanism applies periodic negative pressure directly to the nipple channel via a negative pressure air path. For example, when the negative pressure mechanism is an air pump, it can directly connect to the nipple channel via a negative pressure air path.
[0073] Optionally, the breast shield 461 is connected to or integrally formed with the nipple channel 462.
[0074] In some implementations, the nipple channel may not be connected to the breast shield. For example, the nipple channel may be located on the milk storage container.
[0075] Optionally, the nipple canal can be detachably connected to the breast pump.
[0076] Optionally, the negative pressure air path connects to the negative pressure chamber 43, which is located inside the diaphragm assembly 45.
[0077] In some embodiments, the breast pump 4 also includes a milk storage container 47 for receiving and storing the milk collected by the breast shield 461, and the milk storage container 47 is connected to the breast shield 461.
[0078] Optionally, the milk storage container 47 includes a one-way valve 471, which allows milk to flow only from the breast shield 461 into the milk storage container 47.
[0079] Optionally, the milk storage container may take the form of a milk cap, milk bowl, or milk bottle, and this application does not impose any restrictions.
[0080] In some implementations, the preset frequency is within the range of [5Hz, 20Hz].
[0081] Optionally, the preset frequency refers to the average operating frequency of the pneumatic vibration mechanism. Specifically, to induce vibration of the gas within the negative pressure mechanism, the preset frequency needs to reach a certain frequency threshold. Many existing breast pumps have solenoid valves or similar structures. When the solenoid valve opens, the negative pressure air path connects to the atmosphere. In this case, the solenoid valve also effectively changes the negative pressure within the negative pressure air path. However: Firstly, the valve switching frequency is low, which cannot cause gas vibration in the negative pressure air circuit.
[0082] Secondly, the solenoid valve only operates when the negative pressure mechanism stops applying negative pressure, that is, it opens the valve to restore the negative pressure air path to atmospheric pressure, preparing for the next application of negative pressure.
[0083] The solution of this application can work during the application of negative pressure by the negative pressure mechanism, and the frequency of the air vibration mechanism changing the negative pressure in the negative pressure air path can be controlled by the control mechanism to reach the frequency threshold that causes air vibration, so as to realize the simultaneous performance of milk expression and massage / lactation.
[0084] Furthermore, the solenoid valves in the prior art do not have the function of adjusting the opening degree of the negative pressure air path. The air vibration mechanism of this application can adjust the opening degree of the vent port, thereby adjusting the opening degree of the negative pressure air path. The details will be explained below and will not be repeated here.
[0085] The preset frequency can also be understood as the frequency of gas vibration within the negative pressure air path.
[0086] Optionally, the preset frequency is 5Hz, 6Hz, 7Hz, 8Hz, 9Hz, 10Hz, 11Hz, 11.1Hz, 12Hz, 13Hz, 14Hz, 15Hz, 16Hz, 17Hz, 18Hz, 19Hz or 20Hz, etc.
[0087] Preferably, the preset frequency is 11.1 Hz. In this case, the period corresponding to the preset frequency is 0.09 seconds (s).
[0088] In some embodiments, the suction cycle of the negative pressure mechanism is a first preset time, and the deflation cycle is a second preset time. The first and second preset times are usually determined by the user or the current mode of the breast pump, and this application does not impose any restrictions. This application activates the air vibration mechanism during the suction cycle of the negative pressure mechanism to achieve simultaneous massage / lactation stimulation while the breast pump is pumping milk.
[0089] Optionally, the first preset time is 1s or 1.2s, etc., and the second preset time is 0.5s or 0.3s, etc.
[0090] In some embodiments, the negative pressure mechanism includes one of a negative pressure pump drive mechanism, a magnetic drive mechanism, and a mechanical drive mechanism.
[0091] Optionally, the mechanical drive mechanism may include a mechanical drive mechanism employing a cam and a mechanical drive mechanism employing a piston, etc.
[0092] For example, the negative pressure mechanism 42 is a negative pressure pump drive mechanism. The negative pressure mechanism 42 directly draws gas from the negative pressure chamber 43 and / or delivers gas into the negative pressure chamber 43 to apply / relieve negative pressure to the nipple channel 462.
[0093] Please see Figure 2 , Figure 2 This is a cross-sectional schematic diagram of a second embodiment of the breast pump provided in this application. (See attached diagram.) Figure 2 As shown, exemplarily, the negative pressure mechanism 42 is a magnetic drive mechanism, and the negative pressure mechanism 42 includes a first magnetic element 421 and a second magnetic element 422. The diaphragm assembly 45 includes a deformable portion 451 and a flexible portion 452, and a negative pressure chamber 43 is formed between the deformable portion 451 and the flexible portion 452. Figure 2 The connection structure between the air vibration mechanism 1 and the negative pressure chamber 43 is not shown, but the air vibration mechanism 1 is connected to the negative pressure chamber 43. The second magnetic element 422 is disposed in the flexible portion 452 of the diaphragm assembly 45, with the first magnetic element 421 and the second magnetic element 422 disposed opposite to each other. When the control mechanism 41 controls the first magnetic element 421 to be energized, the first magnetic element 421 drives the second magnetic element 422 to move through magnetic force to apply negative pressure to the negative pressure chamber 43, thereby causing the diaphragm assembly 45 to deform.
[0094] Optionally, the second magnetic element 422 includes a magnet or a material that can be magnetically guided.
[0095] Optionally, the second magnetic element 422 includes one or more magnets.
[0096] In some embodiments, when the opposing magnetic poles of the first magnetic element 421 and the second magnetic element 422 are different, a magnetic attraction force is generated between them. Under the action of this magnetic attraction force, the second magnetic element 422 is driven to move, causing the flexible part 452 to move. At this time, a negative pressure is generated inside the negative pressure chamber 43, which in turn causes the deformable part 451 of the diaphragm assembly 45 to deform. When the opposing magnetic poles of the first magnetic element 421 and the second magnetic element 422 are the same, a repulsive force is generated between them, causing the flexible part 452 to reset, the negative pressure inside the negative pressure chamber 43 to disappear, and the deformable part 451 to reset.
[0097] In some embodiments, when the control mechanism 41 de-energizes the first magnetic element 421, the flexible part 452 and the deformable part 451 can naturally reset.
[0098] Please see Figure 3 , Figure 3 This is a cross-sectional schematic diagram of the third embodiment of the breast pump provided in this application. Figure 3 As shown, the negative pressure mechanism 42 is a mechanically driven mechanism using a piston. The negative pressure mechanism 42 includes a piston assembly 423, which includes a screw 4231 and a piston 4232. The diaphragm assembly 45 includes a deformable portion 451 and a flexible portion 452, forming a negative pressure chamber 43 between the deformable portion 451 and the flexible portion 452. The piston 4232 is connected to the flexible portion 452. When the control mechanism controls the movement of the piston assembly 423 by controlling the movement of the screw 4231, the flexible portion 452 deforms, generating negative pressure inside the negative pressure chamber 43, thereby causing the deformable portion 451 to move.
[0099] Optionally, piston 4232 is connected to the deformable part of diaphragm assembly, and the deformable part of diaphragm assembly and the outer shell of diaphragm assembly form a negative pressure chamber 43. Piston 4232 is used to drive the deformable part of diaphragm assembly to move.
[0100] In some embodiments, the control mechanism controls the screw 4231 to rotate via a motor and a transmission assembly connected to the motor, causing the piston 4232 to reciprocate, thereby generating or eliminating negative pressure inside the negative pressure chamber 43.
[0101] Optionally, the conveying components may include a conveyor belt and gears.
[0102] Please see Figure 4 , Figure 4 This is a schematic diagram of the negative pressure mechanism provided in this application embodiment when it is a mechanical drive mechanism using a cam. Figure 4 As shown, exemplarily, the negative pressure mechanism 42 is a mechanically driven mechanism employing a cam. The negative pressure mechanism 42 includes a motor 4241, a lever arm mechanism 4242, a gear transmission mechanism 4243, and a cam 4244. The motor 4241 is connected to the lever arm mechanism 4242, the lever arm mechanism 4242 is connected to the gear transmission mechanism 4243, and the gear transmission mechanism 4243 is connected to the cam 4244.
[0103] Optionally, the cam 4244 is connected to the flexible part 452 of the diaphragm assembly. The control mechanism is used to control the operation of the motor 4241. The motor 4241 drives the lever arm mechanism 4242 and the gear transmission mechanism 4243 in sequence to move, so that the cam 4244 drives the flexible part 452 of the diaphragm assembly to move, so that negative pressure is generated inside the negative pressure chamber, thereby causing the deformation part to move.
[0104] Optionally, the cam 4244 is connected to the deformable part of the diaphragm assembly, and the deformable part of the diaphragm assembly and the outer shell of the diaphragm assembly form a negative pressure chamber. The cam 4244 is used to drive the deformable part of the diaphragm assembly to move.
[0105] In some implementations, the air vibration mechanism changes the negative pressure in the negative pressure air path by drawing in gas from the negative pressure air path.
[0106] In some implementations, the air vibration mechanism changes the negative pressure in the negative pressure air path by supplying gas into the negative pressure air path.
[0107] In some implementations, the air vibration mechanism changes the negative pressure in the negative pressure air path by alternately drawing gas from the negative pressure air path and delivering gas into the negative pressure air path.
[0108] In some embodiments, the air vibration mechanism includes an atmospheric passage and an opening and closing device. When the opening and closing device is in the open state, the negative pressure air passage is connected to the atmosphere through the atmospheric passage. When the opening and closing device is in the closed state, the negative pressure air passage is sealed. A control mechanism is used to control the opening and closing frequency of the opening and closing device.
[0109] It is understandable that, in the presence of a negative pressure chamber connected to a negative pressure air path, when the negative pressure air path is connected to the atmosphere through an atmospheric channel, the negative pressure chamber is also connected to the atmosphere; when the negative pressure air path is closed, the negative pressure chamber is also closed; when the air vibration mechanism changes the negative pressure in the negative pressure air path, the negative pressure in the negative pressure chamber also changes accordingly.
[0110] Please see Figures 5 to 7 , Figure 5 This is a three-dimensional structural schematic diagram of the air vibration mechanism provided in the embodiments of this application. Figure 6 This is a front view schematic diagram of the air vibration mechanism provided in the embodiments of this application. Figure 7 yes Figure 6 A cross-sectional view of the air vibration mechanism at section line AA in a sealed state. (See figure) Figure 5 and Figure 6 As shown, this application provides a pneumatic vibration mechanism 1. Figure 7 As shown, in some embodiments, the air vibration mechanism 1 further includes a working chamber Q, and the opening and closing device K includes a drive assembly 20 and a seal 30. When the air vibration mechanism 1 is in a sealed state, the seal 30 is in a sealed state that closes the vent c.
[0111] Please see Figure 15 and Figure 16 , Figure 15 This is a side view schematic diagram of the air vibration mechanism provided in the embodiments of this application. Figure 16 yes Figure 15 A sectional view at section line BB. (e.g.) Figure 16 As shown, the air vibration mechanism 1 includes an atmospheric channel D, which includes a vent d that connects to the atmosphere. When the seal 30 is in the open state, the vent d is connected to the vent c.
[0112] In some embodiments, the working chamber Q includes a vent c and at least one connection port. The at least one connection port is used to connect to a negative pressure air path. Optionally, in this case, the negative pressure air path is located between the negative pressure mechanism 42 and the negative pressure chamber 43.
[0113] like Figure 7 As shown, exemplarily, at least one connection port includes a first connection port a and a second connection port b. When the air vibration mechanism 1 is assembled with the breast pump, the first connection port a is used to connect the negative pressure pump, and the second connection port b is used to connect the diaphragm assembly. When the vent port c is sealed, the working chamber Q is isolated from the atmosphere. At this time, the negative pressure pump works to generate negative pressure, which can make the air pressure in the working chamber Q lower than the atmospheric pressure, thereby deforming the diaphragm assembly of the breast pump and allowing the nipple channel to draw milk from the human breast.
[0114] Figure 7 Only one embodiment with two connection ports is shown, but the working chamber may have only one connection port. For example, the air vibration mechanism can be directly connected to the negative pressure air path through one connection port to form a T-shaped air path structure.
[0115] Optionally, there can be multiple connection ports, such as 3, 4, 5 or 8, so that the air vibration mechanism 1 can connect to different components through the connection ports.
[0116] In some embodiments, the drive assembly 20 can control the seal 30 to switch between a sealed state that closes the vent c and multiple open states corresponding to different degrees of openness of the vent c, thereby controlling the opening and closing frequency and amplitude of the vent c. In this way, vibration caused by airflow disturbance can be used instead of mechanical vibration, and the frequency and amplitude of the vibration can be easily controlled.
[0117] By controlling the opening and closing frequency and amplitude of the vent c, the airflow in the working chamber Q can be disturbed, thereby replacing mechanical vibration with vibration caused by airflow disturbance. This causes the diaphragm assembly of the breast pump, including the air vibration mechanism 1, to vibrate, and the vibration becomes gentler and more variable, improving user comfort.
[0118] The control seal 30 switches between a sealed state and an open state to control the generation of gas vibration. By setting multiple open states with different degrees of openness corresponding to the vent c, the strength of the gas vibration can be controlled. When the gas vibration mechanism 1 is installed in the breast pump, the vibration of the diaphragm assembly can better simulate the sucking of an infant.
[0119] Optionally, the opening and closing frequency and amplitude of the vent c can be controlled by a control mechanism to customize the movement of the diaphragm assembly. For example, the suction strength generated by the movement of the diaphragm assembly can alternate between strong and weak, simulating the rhythmic sucking and releasing motion of a baby sucking, rather than a monotonous mechanical suction, thereby improving user comfort.
[0120] Furthermore, by controlling the opening and closing frequency and amplitude of the vent c based on the personalized breast pumping mode, the corresponding diaphragm components move in different patterns, thereby achieving personalized breast pumping and further improving user comfort.
[0121] Optionally, the opening and closing frequency and amplitude of the vent c can be randomized. This simulates the irregular sucking and releasing movements of an infant, rather than a monotonous mechanical suction, thereby improving user comfort.
[0122] Please see Figures 8 to 10 , Figure 8 This is a schematic diagram of the first air pressure fluctuation curve achieved using a negative pressure pump in existing technology. Figure 9 This is a schematic diagram of the second air pressure fluctuation curve achieved by using a negative pressure mechanism and an air vibration mechanism, as provided in the embodiments of this application. Figure 10 This is a schematic diagram of the third air pressure fluctuation curve achieved using a negative pressure mechanism and an air vibration mechanism, as provided in an embodiment of this application. Figures 8 to 10 In this embodiment, the operating frequency of the negative pressure pump is 0.67Hz.
[0123] Figure 9 In the embodiment, the opening and closing frequency of the seal is 11.1 Hz, and the opening and closing amplitude is a fixed value. Figure 10 In the embodiment, the opening and closing frequency of the seal is 11.1 Hz, and the opening and closing amplitude is a random value. For ease of demonstration, Figures 8 to 10 The air pressure index is the value obtained by subtracting one standard atmosphere from the air pressure in the negative pressure air circuit, and the unit is kilopascal (kPa).
[0124] As described above, the time variation curve of the negative pressure applied to the nipple channel by the negative pressure mechanism is a first periodic waveform, which includes a first peak and a first trough.
[0125] like Figure 8 As shown, in the prior art, the first pressure fluctuation curve L1 achieved using a negative pressure pump is a standard 0.67Hz sine wave. The first pressure fluctuation curve L1 is also an example of a first periodic waveform, which includes a first peak F1 and a first trough G1. However, in this application, the final negative pressure time change curve is not a first periodic waveform, but a composite waveform.
[0126] In some implementations, the period of the composite waveform is the first period of the first periodic waveform. The composite waveform includes: based on the first periodic waveform, at least one secondary wave is generated between at least one adjacent first peak and first trough, the secondary wave including at least one primary peak and at least one primary trough, the secondary peak being lower than the first peak and the secondary trough being higher than the first trough.
[0127] like Figure 9 and Figure 10 As shown, the second air pressure fluctuation curve L2 and the third air pressure fluctuation curve L3, achieved by simultaneously operating a negative pressure mechanism and an air vibration mechanism, are superimposed waves of a 0.67Hz sine wave and an 11.1Hz sawtooth wave. Both the second air pressure fluctuation curve L2 and the third air pressure fluctuation curve L3 are composite waveforms with a period equal to the first periodicity of the first periodic waveform.
[0128] For example, in the second pressure fluctuation curve L2, multiple secondary waves C1 are generated between adjacent first peaks and first troughs. The secondary peak F21 is lower than... Figure 8 The first peak F1 and the secondary trough G21 are higher than the first peak F1 and the second trough G21, respectively. Figure 8 The first trough in G1.
[0129] For example, in the third pressure fluctuation curve L3, multiple secondary waves C2 are generated between adjacent first peaks and first troughs. The secondary peak F22 is lower than... Figure 8 The first peak F1 and the secondary trough G22 are higher than the first peak F1 and the second trough G22, respectively. Figure 8 The first trough in G1.
[0130] like Figure 9 As shown, when the opening and closing amplitude is a fixed value, the amplitude of the secondary wave C1 is a fixed value, while the amplitude varies significantly near the maximum value of the second pressure fluctuation curve L2, and the second pressure fluctuation curve L2 exhibits a periodic pattern. In this way, the diaphragm assembly can vibrate regularly, making it easier for the user to adapt to the rhythm of breastfeeding.
[0131] like Figure 10 As shown, when the opening and closing amplitude is a random value, the amplitude of the secondary wave C2 is a random value, and the variation near the maximum value of the third air pressure fluctuation curve L3 is small, indicating that the air pressure fluctuation is smoother. In this way, the vibration of the diaphragm assembly can be made gentler and more varied.
[0132] Furthermore, the air vibration device can also apply vibration at a fixed frequency or at a varying frequency. The figure illustrates the application of vibration at a fixed frequency, but does not preclude the option of applying vibration at a varying frequency.
[0133] Please see Figure 11 , Figure 11 yes Figure 7 A magnified view of point A in the middle. (See image below.) Figure 11 As shown, optionally, the seal 30 includes an elastic sealing ring 31 that protrudes toward the vent c. When the seal 30 is in a sealed state, the elastic sealing ring 31 extends into the vent c and fits against the wall of the vent c, thereby improving the sealing performance of the vent c.
[0134] Alternatively, the seal 30 may be an elastic plug, such as a silicone plug.
[0135] Please see Figure 7 and Figure 12 , Figure 12 yes Figure 6 A cross-sectional view of the air vibration mechanism at section line AA in the open state. (See figure) Figure 7 and Figure 12 As shown, in some embodiments, the drive assembly 20 includes a drive unit 21 that moves the seal 30 to close or open the vent c, and a power source unit 22 that drives the drive unit 21 to move. The power source unit 22 is subjected to... Figure 1 The control mechanism 41 controls the operation. When the air vibration mechanism 1 is in the open state, the seal 30 is in an open state corresponding to a certain degree of openness of the vent c.
[0136] In some embodiments, the power source 22 includes one of an electromagnetic power source, a hydraulic power source, or a pneumatic power source. Appropriate power sources can be used for different application scenarios, and this application does not impose any limitations. In this way, a variety of power sources are available, allowing for the selection of a suitable power source for different application scenarios.
[0137] like Figure 7 and Figure 12 As shown, in some embodiments, the drive assembly 20 further includes a reset section 23. The reset section 23 is used to restore the seal 30 to a sealed state after the power source 22 stops applying the driving force, and is used to generate different magnitudes of reset force when the seal 30 is in different open states. In this way, for different open states, different magnitudes of reset force can cause the seal 30 to return to a sealed state at different speeds, and when the degree of opening is large, the vent can be quickly closed.
[0138] Optionally, when the power source 22 includes an electromagnetic power source, stopping the application of driving force by the power source 22 includes stopping the power supply to the electromagnet by the power source 22.
[0139] Optionally, when the power source 22 includes a hydraulic power source, stopping the application of driving force by the power source 22 includes stopping the power supply to the micro hydraulic pump.
[0140] Optionally, when the power source 22 includes a pneumatic power source, stopping the application of driving force by the power source 22 includes stopping the power supply to the air pump by the power source 22.
[0141] In some embodiments, the reset part 23 includes a spring. When the power source 22 applies a driving force to the drive part 21, causing the drive part 21 to drive the seal 30 to different open states, the spring generates different magnitudes of elastic restoring force. When the power source 22 stops applying the driving force to the drive part 21, the elastic restoring force of the spring causes the drive part 21 to move, thereby driving the seal 30 back to the sealed state. In this way, the spring structure is simple, reducing costs and making the pneumatic vibration mechanism 1 easy to manufacture and maintain. The elastic restoring force of the spring is the reset force.
[0142] like Figure 12 As shown, in some embodiments, the seal 30 is in the open state when the air vibration mechanism 1 is in the open state. The distance h between the seal 30 and the vent c can be used to represent the opening and closing amplitude of the vent c. The distance h between the seal 30 and the vent c is different when the seal 30 is in different open states. The greater the distance h between the seal 30 and the vent c, the faster the air enters the working chamber Q, and the faster the atmospheric pressure is restored in the working chamber Q. When the air vibration mechanism 1 is installed in the breast pump, the opening and closing frequency and amplitude of the vent c can be controlled by the control mechanism to control the degree of turbulence of the airflow in the working chamber Q, so that the movement of the diaphragm assembly is in a preset mode.
[0143] In some embodiments, when the power source 22 applies a preset driving force to the drive unit 21, causing the drive unit 21 to move away from the vent c, the spring is compressed. When the elastic restoring force of the spring on the drive unit 21 is equal to the driving force and the weight of the drive unit 21 itself, the drive unit 21 will stop moving, thereby controlling the power source 22 to apply different magnitudes of driving force to the drive unit 21 to keep the seal 30 in different open states.
[0144] After the power source 22 stops applying driving force to the drive unit 21, the elastic restoring force of the spring causes the drive unit 21 to move towards the vent c, thereby driving the seal 30 to return to the sealed state. Figure 3 As shown, the seal 30 is in a sealed state, closing the vent c. At this time, the spring can be compressed, and the direction of the elastic restoring force of the spring on the drive unit 21 is towards the vent c, causing the drive unit 21 to drive the seal 30 to tightly abut against the vent c. In this way, the sealing degree of the vent c can be improved.
[0145] In other embodiments, the reset part 23 may include an elastic material such as elastic rubber.
[0146] Please see Figure 13 , Figure 13 yes Figure 7 A magnified view of point B in the middle. (See example.) Figure 13 As shown, in some embodiments, the drive unit 21 further includes a stop portion 211 extending from its surface. For example... Figure 7 and Figure 13 As shown, the first end of the reset part 23 is connected to the stop part 211, and the second end of the reset part 23 abuts against the power source part 22. In this way, the drive part 21 can be simultaneously subjected to the reset force applied by the reset part 23 to the stop part 211 and the driving force applied by the power source part 22, so that the drive part 21 can move the seal 30 to different open states by means of the reset force and the driving force.
[0147] Optionally, when the reset part 23 includes a spring, the spring may be partially embedded in the stop part 211.
[0148] Optionally, the surface of the drive unit 21 is further provided with a groove 221, and the abutment 211 extends out from the groove 221 on the surface of the drive unit 21.
[0149] In some embodiments, the power source 22 includes an electromagnet, and the drive unit 21 includes a metal part connected to the seal 30. When the electromagnet is not energized, the reset unit 23 applies pressure to the metal part to drive the seal and close the vent c. When the electromagnet is energized, it applies magnetic force to the metal part, driving it to move and causing the seal 30 to switch to an open state corresponding to the electromagnet's energizing current. In this way, noise is reduced and the structure is simplified compared to mechanical vibration, making the pneumatic vibration mechanism 1 more portable.
[0150] When the electromagnet is energized, it applies a magnetic force to the metal part in a direction away from the vent c. The greater the current of the electromagnet, the greater the magnetic force applied to the metal part, the greater the distance that the metal part drives the sealing member 30 to move, the greater the distance h between the sealing member 30 and the vent c, and thus the greater the degree of opening of the vent c.
[0151] By controlling the magnitude of the current flowing through the electromagnet using a control mechanism, the magnitude of the magnetic force applied by the electromagnet to the drive unit 21 can be controlled, thereby controlling the speed of the drive unit 21 and the opening degree of the vent c. By controlling the duration of the electromagnet's energization, the duration of the magnetic force applied to the drive unit 21 can be controlled, thereby controlling the movement time of the drive unit 21. By controlling the frequency of the electromagnet's energization, the frequency of the drive unit 21's movement can be controlled, thereby controlling the opening and closing frequency of the vent c.
[0152] As described above, in some embodiments, the power source 22 includes one of an electromagnetic power source, a hydraulic power source, and a pneumatic power source. Appropriate power sources can be used for different application scenarios, and this application does not impose any limitations.
[0153] Exemplarily, the power source 22 and the drive unit 21 are not limited to the form of an electromagnet and a metal part cooperating. For example, the power source 22 may include a micro motor connected to the drive unit 21. When the micro motor is not energized, the seal 30 closes the vent c. When the micro motor is energized, it applies a driving force to the drive unit 21, causing the drive unit 21 to switch the seal 30 to an open state corresponding to the control signal of the micro motor. This method still uses airflow disturbance to cause vibration instead of mechanical vibration by controlling the opening and closing amplitude and frequency of the vent c, so that the air in the working chamber Q can vibrate when the working chamber Q is closed.
[0154] Alternatively, the micro motor can be a micro stepper motor, which can precisely control the movement amplitude of the drive unit 21.
[0155] For example, the power source 22 may include a miniature hydraulic pump connected to the drive unit 21. By controlling the fluid flow rate of the miniature hydraulic pump through a solenoid valve, the power source 22 can precisely control the movement amplitude of the drive unit 21.
[0156] For example, the power source 22 may include an air pump, and a sealed space may be formed between the power source 22 and the drive unit 21. By controlling the air pump to draw in or release air, the air pressure in the sealed space can be changed, thereby causing the drive unit 21 to move.
[0157] Please see Figure 14 , Figure 14 This is an exploded view of the air vibration mechanism provided in an embodiment of this application. Figure 14 As shown, in some embodiments, the pneumatic vibration mechanism 1 includes a housing 10. The housing 10 includes a first housing 11 and a second housing 12. A working chamber Q is disposed in the first housing 11, and a seal 30 and a drive assembly 20 are disposed in the second housing 12. A vent c is disposed at the connection between the first housing 11 and the second housing 12. This allows for easy adjustment of the size of the working chamber Q and the drive assembly 20 during production for different product models.
[0158] like Figure 7 As shown, optionally, the first shell 11 and the second shell 12 are detachably connected. This facilitates mass production, reduces assembly complexity, and makes it easier to clean, install, and maintain the air vibration mechanism 1.
[0159] The connection methods for the detachable connection between the first shell 11 and the second shell 12 include, but are not limited to, snap-fit connection, threaded connection and magnetic connection. The specific connection can be selected as needed, and this application does not impose any restrictions.
[0160] Please see Figure 15 and Figure 16 , Figure 15This is a side view schematic diagram of the air vibration mechanism provided in the embodiments of this application. Figure 16 yes Figure 15 A sectional view at section line BB. (e.g.) Figure 16 As shown, the air vibration mechanism 1 also includes an atmospheric channel D, which includes a vent d that connects to the atmosphere. When the seal 30 is in the open state, the vent d is connected to the vent c.
[0161] See Figure 7 , Figure 12 , Figure 15 and Figure 16 It can be seen that the vent d is located away from the first connection port a, the second connection port b, and the vent port c. When the seal 30 is in the open state, the vent d can connect to the working chamber Q through the vent port c, so that atmospheric air can enter the working chamber Q from the vent d through the vent port c, changing the air pressure in the working chamber Q. When the seal 30 is in the sealed state, the vent d does not connect to the working chamber Q.
[0162] In some embodiments, the breast pump also includes a diaphragm assembly. One connection port of the working chamber Q is connected to the negative pressure mechanism, and the other connection port of the working chamber Q is connected to the diaphragm assembly.
[0163] In some embodiments, when the seal 30 is in a sealed state, a negative pressure mechanism is used to create a vacuum, causing the diaphragm assembly to deform. After the seal 30 changes from a sealed state to an open state, the diaphragm assembly gradually returns to its shape, and the recovery speed of the diaphragm assembly is positively correlated with the degree of opening of the vent c. In this way, the vibration of the diaphragm assembly can be varied, further improving user comfort.
[0164] As described above, in some embodiments, the opening and closing frequency and amplitude of the vent c can be controlled by a control mechanism to make the diaphragm assembly move in a preset manner.
[0165] In summary, the breast pump provided in this application has the following advantages: 1. A negative pressure mechanism is used to connect the negative pressure air path to the nipple channel and apply periodic negative pressure directly or indirectly to the nipple channel in the first cycle. The air vibration mechanism is connected to the negative pressure air path and acts intermittently on the negative pressure air path, so that the negative pressure waveform of the negative pressure air path or the negative pressure waveform received by the nipple channel after the action is a composite waveform. The vibration caused by airflow disturbance can replace the mechanical vibration, making the vibration gentler and more variable.
[0166] 2. By including a metal part in the drive unit 21 and an electromagnet in the power source unit 22, noise can be reduced and the structure can be simplified compared to mechanical vibration, making the pneumatic vibration mechanism 1 lighter.
[0167] 3. By setting the working chamber Q in the first shell 11 and the sealing element 30 and the drive assembly 20 in the second shell 12, it is convenient to adjust the size of the working chamber Q and the drive assembly 20 for different product models during the production process.
[0168] Please see Figure 17 , Figure 17 This is a flowchart illustrating the control method for a breast pump provided in an embodiment of this application. Figure 17 As shown, this application also provides a control method for a breast pump, the control method including step S100.
[0169] Step S100: Control the negative pressure mechanism to apply periodic negative pressure directly or indirectly to the nipple channel in the first cycle, so that the time change curve of the negative pressure applied by the negative pressure mechanism to the nipple channel is the first periodic waveform.
[0170] The first periodic waveform includes the first peak and the first trough.
[0171] Step S200: During the operation of the negative pressure mechanism, the control air vibration mechanism is intermittently applied to the negative pressure air path, so that the negative pressure waveform of the negative pressure air path or the negative pressure waveform received by the nipple channel after the application is a composite waveform.
[0172] The composite waveform has a first period and includes at least one secondary wave generated between at least one adjacent first peak and trough, based on the first periodic waveform. The secondary wave includes at least one primary peak and at least one primary trough. The composite waveform causes continuous or intermittent vibration in the nipple channel or negative pressure airway.
[0173] In some embodiments, this application also provides a breast pump, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the control method of the breast pump as described above.
[0174] Optionally, the control mechanism of the breast pump includes a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the control method of the breast pump as described above.
[0175] In the description of this specification, references to terms such as "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the described embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0176] Furthermore, the above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.
Claims
1. A breast pump, characterized in that, The breast pump includes: a breast shield, a nipple channel, a milk storage container, a control mechanism, a negative pressure mechanism, and an air vibration mechanism; The breast shield is used to accommodate the breast and communicate with the nipple channel; The nipple channel is used to accommodate the nipple and is directly or indirectly connected to the liquid in the milk storage container; The negative pressure mechanism is used to connect to the nipple channel through a negative pressure air path and to apply periodic negative pressure directly or indirectly to the nipple channel in a first cycle, so that the negative pressure time change curve applied by the negative pressure mechanism to the nipple channel is a first periodic waveform, the first periodic waveform including a first peak and a first trough; The control mechanism is used to control the operation of the negative pressure mechanism; The air vibration mechanism is used to connect with the negative pressure air path and intermittently act on the negative pressure air path, so that the negative pressure waveform of the negative pressure air path after the action or the negative pressure waveform received by the nipple channel is a composite waveform. The period of the composite waveform is the first period. The composite waveform includes: on the basis of the first periodic waveform, at least one secondary wave is generated between at least one adjacent first peak and first trough. The secondary wave includes at least one primary peak and at least one primary trough. The secondary peak is lower than the first peak, and the secondary trough is higher than the first trough. The composite waveform causes the nipple channel or the negative pressure airway to vibrate continuously or intermittently.
2. The breast pump according to claim 1, characterized in that, The control mechanism is used to control the air vibration mechanism to act on the negative pressure air path at a preset frequency during the operation of the negative pressure mechanism, thereby causing gas vibration in the nipple channel or the negative pressure air path; wherein the preset frequency is in the range of [5Hz, 20Hz].
3. The breast pump according to claim 1, characterized in that, The negative pressure mechanism includes one of the following: a negative pressure pump drive mechanism, a magnetic drive mechanism, and a mechanical drive mechanism.
4. The breast pump according to claim 1, characterized in that, The air vibration mechanism changes the negative pressure in the negative pressure air path by absorbing gas from the negative pressure air path, and / or the air vibration mechanism changes the negative pressure in the negative pressure air path by supplying gas into the negative pressure air path.
5. The breast pump according to claim 4, characterized in that, The air vibration mechanism includes an atmospheric channel and an opening and closing device. When the opening and closing device is in the open state, the negative pressure air path is connected to the atmosphere through the atmospheric channel; when the opening and closing device is in the closed state, the negative pressure air path is sealed. The control mechanism is used to control the opening and closing frequency of the opening and closing device.
6. The breast pump according to claim 5, characterized in that, The air vibration mechanism also includes a working chamber, and the opening and closing device includes a drive assembly and a sealing element; The working chamber includes a vent and at least one connection port, the at least one connection port being used to connect to the negative pressure air circuit; The drive assembly can control the seal to switch between a sealed state that closes the vent and an open state that opens the vent, thereby controlling the opening and closing frequency.
7. The breast pump according to claim 6, characterized in that, The drive component can control the seal to switch between a sealed state that closes the vent and multiple open states corresponding to different degrees of openness of the vent, thereby controlling the opening and closing frequency and the opening and closing amplitude.
8. The breast pump according to claim 6, characterized in that, The seal includes an elastic sealing ring that protrudes toward the vent.
9. The breast pump according to claim 7, characterized in that, The drive assembly includes a drive unit for moving the seal to close or open the vent and a power source unit for driving the drive unit to move, the power source unit being controlled by the control mechanism.
10. The breast pump according to claim 9, characterized in that, The power source unit includes one of the following: electromagnetic power source, hydraulic power source, and pneumatic power source.
11. The breast pump according to claim 9, characterized in that, The drive assembly also includes a reset unit; The reset part is used to restore the seal to a sealed state after the power source stops applying the driving force, and is used to generate different magnitudes of reset force when the seal is in different open states.
12. The breast pump according to claim 11, characterized in that, The reset part includes a spring; When the power source applies a driving force to the drive unit, causing the drive unit to drive the seal to different open states, the spring generates different magnitudes of elastic restoring force. When the power source stops applying driving force to the drive unit, the elastic restoring force of the spring causes the drive unit to move, thereby driving the seal to return to the sealing state.
13. The breast pump according to claim 9, characterized in that, The drive unit also includes a stop extending from its surface; The first end of the reset part is connected to the blocking part, and the second end of the reset part abuts against the power source part.
14. The breast pump according to claim 11, characterized in that, The power source includes an electromagnet, and the drive unit includes a metal part connected to the seal. When the electromagnet is not energized, the reset part applies pressure to the metal part so that the metal part drives the seal to close the vent. When the electromagnet is energized, it applies a magnetic force to the metal part, driving the metal part to move, so that the seal switches to an open state corresponding to the energizing current of the electromagnet.
15. The breast pump according to claim 6, characterized in that, The air vibration mechanism includes a first housing and a second housing; the working chamber is disposed in the first housing, and the sealing element and the driving assembly are disposed in the second housing; The vent is located at the connection between the first shell and the second shell.
16. The breast pump according to claim 15, characterized in that, The first shell and the second shell are detachably connected.
17. The breast pump according to claim 6, characterized in that, The air vibration mechanism also includes a vent that connects to the atmosphere; When the seal is in the open state, the vent is connected to the vent.
18. A method for controlling a breast pump, characterized in that, The control method includes: The negative pressure mechanism is controlled to apply periodic negative pressure directly or indirectly to the nipple channel in a first cycle, such that the time variation curve of the negative pressure applied by the negative pressure mechanism to the nipple channel is a first periodic waveform, which includes a first peak and a first trough. During the operation of the negative pressure mechanism, the control air vibration mechanism intermittently acts on the negative pressure air path, so that the negative pressure waveform of the negative pressure air path or the negative pressure waveform received by the nipple channel after the action is a composite waveform. The period of the composite waveform is the first period. The composite waveform includes: on the basis of the first periodic waveform, at least one secondary wave is generated between at least one adjacent first peak and first trough. The secondary wave includes at least one primary peak and at least one primary trough. The secondary peak is lower than the first peak, and the secondary trough is higher than the first trough. The composite waveform causes the nipple channel or the negative pressure airway to vibrate continuously or intermittently.
19. A breast pump, characterized in that, The breast pump includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the control method of the breast pump as described in claim 18.