Negative pressure generation type automatic breast pump device

Abstract

The invention relates to the technical field of maternal and infant nursing instruments, in particular to a negative pressure generation type automatic breast pump device which comprises a breast suction cover, a bottle cap assembly, a milk collection bottle, a connecting hose and an elastic extrusion bag. The bottle cap assembly is detachably connected with the milk collecting bottle, and the milk sucking cover is communicated with the bottle cap assembly; an emulsion channel and a negative pressure channel are formed in the bottle cap assembly, the emulsion channel is communicated with the emulsion collecting bottle to collect emulsion, and the negative pressure channel is communicated with the connecting hose through a connecting pipe; the other end of the connecting hose is communicated with the elastic extrusion bag body, so that the elastic extrusion bag body generates pulsation negative pressure on the negative pressure channel in the compression and rebounding processes; a pressure pipe is arranged on the elastic extrusion bag body, and is matched with a limiting spring and a rotating rod to adjust the opening degree of the valve, so that adjustable control on pulsation negative pressure is realized; and a deflection plate is arranged between the connecting hose and the elastic extrusion bag body and used for deflecting airflow and reducing the risk that liquid flows back to the elastic extrusion bag body along the connecting hose.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mother and infant care devices, in particular to a negative pressure generating type automatic breast pump device. BACKGROUND

[0002] As a common mother and infant care device in the process of breastfeeding and breast milk storage, the breast pump usually establishes negative pressure between the breast and the breast cup, so that the milk enters the milk collection container through the milk guide structure, and the milk collection is realized.

[0003] Among them, the manual negative pressure type breast pump usually uses an elastic extrusion capsule or a handle structure as a negative pressure source. The user changes the volume of the device cavity periodically by extrusion and release action, so as to generate intermittent or pulsating negative pressure at the breast cup. Such products have relatively simple structure, low cost and good portability, but there are still the following shortcomings in actual use:

[0004] 1. The strength and rhythm of the negative pressure depend on the human operation, and the stability is poor: the extrusion amplitude, frequency and force of the user have individual differences, so that the peak value, rising speed and pulsation period of the negative pressure are difficult to keep consistent, and the suction force is easy to be large or small, which affects the efficiency and comfort of breast pumping.

[0005] 2. Lack of effective negative pressure regulation and pressure limiting protection: some structures only realize rough adjustment by replacing parts or changing operation method, which is difficult to continuously and finely adjust the negative pressure during use, and when the sealing is good and the user exerts too much force, there is a risk of high negative pressure leading to discomfort.

[0006] 3. The gas-liquid separation structure is imperfect, and the milk liquid is easy to enter the gas path: the manual negative pressure type usually sets a gas path interface at the bottle cap or connecting seat, and communicates with the negative pressure source through a hose. When the gas path and the milk path inside the bottle cap are not isolated enough, or the channel arrangement is unreasonable (for example, the gas path inlet is too low, and there is no isolation member), the milk liquid is easy to enter the gas path when the milk liquid splashes, foam surges or uses in an inclined position, which causes pollution of the gas path, difficulty in cleaning, and even affects the subsequent establishment of negative pressure.

[0007] 4. Risk of backflow pollution: during breast pumping, condensate or entrained droplets may appear in the gas path, or backflow tendency may occur when the use posture changes or the milk collection bottle is poured. If there is no effective backflow inhibition structure, the liquid may flow back to the negative pressure generating end (such as the side of the elastic extrusion capsule) along the connecting hose, causing contamination of the negative pressure source end, odor, mold growth and other health hazards, and may cause valve sticking, air leakage, and affect the negative pressure performance

[0008] Therefore, a negative pressure generating type breast pump device with a more reasonable structure is provided, which realizes effective isolation of the milk liquid channel and the negative pressure channel through structural design, and improves the use comfort, health safety and negative pressure stability. SUMMARY

[0009] The purpose of this invention is to provide a negative pressure generating automatic breast pump device to solve the problems mentioned in the background art.

[0010] The technical solution adopted by this application to solve its technical problem is: a negative pressure generating automatic breast pump device, including: a breast shield, a bottle cap assembly, a milk collection bottle, a connecting hose, and an elastic squeezing bladder;

[0011] The bottle cap assembly is detachably connected to the milk collection bottle, and the breast suction shield is connected to the bottle cap assembly;

[0012] The bottle cap assembly forms an emulsion channel and a negative pressure channel. The emulsion channel is connected to the emulsion collection bottle to collect the emulsion, and the negative pressure channel is connected to the connecting hose through a connecting tube.

[0013] The other end of the connecting hose is connected to the elastic compression bladder, so that the elastic compression bladder generates pulsating negative pressure on the negative pressure channel during compression and rebound.

[0014] The elastic compression bladder is equipped with a pressure tube, which has a through valve. A limiting spring and a rotating rod are used to adjust the opening of the through valve, thereby achieving adjustable control of the pulsating negative pressure. A deflection plate is provided between the connecting hose and the elastic compression bladder to deflect the airflow and reduce the risk of liquid flowing back into the elastic compression bladder along the connecting hose.

[0015] Preferably, the breast shield has a contact layer on the side that contacts the human body, and the contact layer is made of a flexible material and can be detachably assembled onto the breast shield.

[0016] Preferably, an extension tube is provided between the breast shield and the bottle cap assembly, with one end of the extension tube connected to the breast shield and the other end connected to the bottle cap assembly, so as to extend the flow channel between the breast shield and the bottle cap assembly and improve the operating space.

[0017] Preferably, the milk collection bottle is provided with an external thread, and the cap assembly is provided with an internal thread that mates with the external thread, so as to realize the screw-on connection between the cap assembly and the milk collection bottle.

[0018] Preferably, the outer surface of the milk collection bottle is provided with anti-slip grooves.

[0019] Preferably, the bottle cap assembly is provided with a separation tube, which divides the fluid path within the bottle cap assembly into an emulsion channel and a negative pressure channel to achieve gas-liquid separation.

[0020] Preferably, the negative pressure channel is located above the emulsion channel, and the negative pressure channel is connected to the connecting hose via a connecting pipe, thereby reducing the probability of emulsion entering the negative pressure channel.

[0021] Preferably, the valve is installed on the pressure pipe, and the rotating rod is connected to the valve for transmission. When the rotating rod rotates, it changes the opening of the valve to adjust the negative pressure intensity.

[0022] Preferably, the limiting spring acts on the deflection plate to provide rotational damping, limiting, or resetting functions, so that the opening of the valve is maintained at a set position or returns to a preset position after the external force is released.

[0023] Preferably, the end of the pressure tube is provided with a connector tube for connecting to the hose to achieve a detachable and sealed connection.

[0024] The beneficial effects of this application are:

[0025] The negative pressure generating automatic breast pump device provided in this application has a connecting hose connected to the negative pressure channel of the bottle cap assembly via a connecting tube. The connecting tube can be a rigid short tube or a tube connector structure, used to enhance the connection strength between the connecting hose and the bottle cap assembly and form a reliable seal. The other end of the connecting hose is connected to the elastic squeezing bladder, and a deflection plate is provided at the connection point to reduce the risk of backflow. The pressure tube end is provided with a connector tube, which can be integrally formed with the pressure tube or assembled with it. The connector tube is used to achieve a detachable and sealed connection with the hose or tube connector, which is convenient for disassembly, assembly, cleaning and maintenance.

[0026] The negative pressure generating automatic breast pump device provided in this application has a contact layer on the side of the breast shield that contacts the human body. The contact layer is preferably made of a flexible elastic material such as silicone to balance comfort and sealing. The contact layer can be detachably assembled, for example, by means of buckles, flanged sleeves, or annular pressure rings to secure it to the edge of the breast shield, making it easy to remove, clean, or replace. The extension tube and the breast shield can be fitted with a conical interference fit or a sleeved sealing fit; a sealing ring can be provided if necessary to improve sealing reliability. A flow channel is formed inside the extension tube, which can serve as part of the mixing channel for emulsion and air, and can also divert the flow into the emulsion channel near the cap assembly. Negative pressure channel; the upstream of the emulsion channel is connected to the breast shield side, and the downstream is connected to the receiving cavity of the milk collection bottle; under negative pressure, the emulsion flows from the breast shield side through the emulsion channel into the milk collection bottle for collection and storage; the emulsion channel can be set with a relatively large cross-section to reduce flow resistance, reduce emulsion retention, and facilitate cleaning; the negative pressure channel is used to transmit the negative pressure generated by the elastic squeezing bladder to the breast shield end; the negative pressure channel is connected to the connecting hose through a connecting pipe to form a continuous air path; the negative pressure channel is set above the emulsion channel or away from the emulsion flow area, so that even if the emulsion splashes or falls back, it is difficult to enter the negative pressure channel, thus structurally reducing the probability of accidental entry.

[0027] The negative pressure generating automatic breast pump device provided in this application, when the user squeezes the elastic squeezing bladder, the internal volume of the bladder decreases, and the internal gas is discharged through the pressure tube or released through related channels; when the user releases the elastic squeezing bladder, the bladder rebounds, the internal volume increases and negative pressure is formed, and air is drawn into the negative pressure channel through the connecting hose, thereby forming suction at the breast shield; through continuous squeezing and rebound, periodic pulsating negative pressure is formed; the pressure tube is set on the elastic squeezing bladder and can serve as a branch for depressurization, gas replenishment, and gas exhaust; a valve is set on the pressure tube to change the on / off state or flow area of ​​the pressure tube, thereby changing the amplitude and recovery speed of the negative pressure formed by the elastic squeezing bladder during compression and rebound; when the valve opening is increased, the release of pressure increases, the peak negative pressure formed by the elastic squeezing bladder decreases or the negative pressure establishment speed decreases; when the valve opening is decreased, the release decreases, the peak negative pressure increases or the negative pressure establishment speed increases, thereby realizing the adjustment of negative pressure intensity.

[0028] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. These will be further described in detail below with reference to figures. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0031] Figure 3 This is a partial cross-sectional view of the breast shield of the present invention;

[0032] Figure 4 This is a schematic diagram of the elastic compression bladder structure of the present invention;

[0033] Figure 5 This is a schematic diagram of the pressure tube structure of the present invention;

[0034] Figure 6 This is a schematic diagram of the emulsion channel and negative pressure channel of the present invention.

[0035] Drawing number explanation:

[0036] 1. Breast pump; 2. Bottle cap assembly; 3. Milk collection bottle; 4. Connecting hose; 5. Elastic compression capsule; 6. Contact layer; 7. Extension tube; 8. Anti-slip groove; 9. External thread; 10. Internal thread; 11. Separation tube; 12. Pressure tube; 13. Through valve; 14. Restriction spring; 15. Rotating rod; 16. Deflecting plate; 17. Connecting tube; 18. Connecting tube; 19. Milk channel; 20. Negative pressure channel. Detailed Implementation

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0039] Please refer to Figures 1 to 6 The negative pressure generating automatic breast pump device includes: a bottle cap assembly 2 connected to a milk collection bottle 3; the milk collection bottle 3 is provided with an external thread 9, and the bottle cap assembly 2 is provided with an internal thread 10 that mates with the external thread 9; during assembly, the bottle cap assembly 2 is fitted axially onto the mouth of the milk collection bottle 3 and tightened to form a stable connection.

[0040] Furthermore, to ensure a seal, a sealing ring can be provided at the contact point between the cap assembly 2 and the emulsion collection bottle 3. After the sealing ring is compressed, a circumferential seal is formed to prevent emulsion leakage and the entry of outside air into the emulsion channel 19.

[0041] The breast shield 1 and the bottle cap assembly 2 are connected by an extension tube 7; one end of the extension tube 7 is sealed to the connecting section of the breast shield 1, and the other end is sealed to the upper interface of the bottle cap assembly 2; the extension tube 7 is used to adjust the spatial position of the breast shield 1 relative to the milk collection bottle 3, so that the breast shield 1 has a more suitable angle and distance when in use, thereby improving the fit and ease of operation.

[0042] One end of the connecting hose 4 is connected to the negative pressure channel 20 of the bottle cap assembly 2 via the connecting tube 18; the connecting tube 18 can be a rigid short tube or a pipe joint structure, used to enhance the connection strength between the connecting hose 4 and the bottle cap assembly 2 and form a reliable seal; the other end of the connecting hose 4 is connected to the elastic compression bladder 5, and a deflection plate 16 is provided at the connection point to reduce the risk of backflow; the end of the pressure tube 12 is provided with a connector tube 17, which can be integrally formed with the pressure tube 12 or assembled and connected. The connector tube 17 is used to achieve a detachable sealed connection with the hose or pipe joint, which is convenient for disassembly, cleaning and maintenance;

[0043] The outer surface of the milk collection bottle 3 is provided with anti-slip grooves 8, which are arranged along the axial or circumferential direction to prevent the user from slipping when holding the milk collection bottle 3, and to ensure stable grip, especially under cleaning or emulsion adhesion conditions.

[0044] Please refer to Figures 1 to 3The breast shield 1 has a contact layer 6 on the side that contacts the human body. The contact layer 6 is preferably made of a flexible elastic material such as silicone, and its hardness can be selected in the range of Shore hardness 30A-60A to take into account both fit and comfort and sealing. The contact layer 6 can be detachably assembled, for example, by means of buckles, flanged sleeves or ring pressure rings to fix it to the edge of the breast shield 1, so that the contact layer 6 can be easily disassembled for cleaning or replacement. The extension tube 7 and the breast shield 1 can be fitted with a conical interference fit or a sleeve sealing fit. If necessary, a sealing ring is provided to improve the sealing reliability. The extension tube 7 forms a flow channel inside, which can be used as part of the mixing channel of emulsion and air, and can also divert the flow into the emulsion channel 19 and the negative pressure channel 20 near the cap assembly 2.

[0045] like Figure 5 As shown, the bottle cap assembly 2 forms an emulsion channel 19 and a negative pressure channel 20 inside, and the two channels are isolated by a separation tube 11;

[0046] The upstream of the emulsion channel 19 is connected to the breast shield 1 side, and the downstream is connected to the receiving cavity of the milk collection bottle 3. Under negative pressure, the emulsion flows from the breast shield 1 side through the emulsion channel 19 into the milk collection bottle 3 for collection and storage. The emulsion channel 19 can be set with a relatively large cross-section to reduce flow resistance, reduce emulsion retention, and facilitate cleaning. The negative pressure channel 20 is used to transmit the negative pressure generated by the elastic squeezing bladder 5 to the breast shield 1 end. The negative pressure channel 20 is connected to the connecting hose 4 through the connecting pipe 18, so that the air path forms a continuous channel.

[0047] Preferably, the negative pressure channel 20 is located above the emulsion channel 19 or away from the emulsion flow area, so that even if the emulsion splashes or falls back, it is difficult for it to enter the negative pressure channel 20, thus structurally reducing the probability of accidental entry.

[0048] Reference Appendix Figures 1-3 The separation tube 11 is located inside the bottle cap assembly 2, with one end close to the breast suction shield 1 and the other end extending into the partition area inside the bottle cap assembly 2. The separation tube 11 forms an isolation boundary, separating the emulsion channel 19 from the negative pressure channel 20, so that the emulsion mainly flows down along the emulsion channel 19 into the milk collection bottle 3, while the negative pressure of the gas mainly propagates in the negative pressure channel 20. The separation tube 11 can be an integrally formed partition tube, or it can be an independent part assembled inside the bottle cap assembly 2 and fixed by snap-fit ​​or ultrasonic welding.

[0049] like Figure 4 As shown, the elastic compression bladder 5 is a compressible and resilient elastic bladder structure, which achieves air extraction and negative pressure establishment through compression and rebound.

[0050] When the user squeezes the elastic compression bladder 5, the internal volume of the bladder decreases, and the internal gas is discharged through the pressure tube 12 or released through the relevant passage; when the user releases the elastic compression bladder 5, the bladder rebounds, the internal volume increases and a negative pressure is formed, and air is drawn from the negative pressure channel 20 through the connecting hose 4, thereby forming a suction force at the breast shield 1; through continuous squeezing and rebounding, a periodic pulsating negative pressure is formed.

[0051] Pressure pipe 12 is installed on the elastic compression bladder 5 and can serve as a branch for pressure relief, air replenishment, and air exhaust. A valve 13 is installed on pressure pipe 12 to change the on / off state or flow area of ​​pressure pipe 12, thereby altering the negative pressure amplitude and recovery speed formed by the elastic compression bladder 5 during compression and rebound. When the opening of valve 13 increases, the discharge volume of pressure pipe 12 increases, and the peak negative pressure formed by the elastic compression bladder 5 decreases or the negative pressure establishment speed decreases. When the opening of valve 13 decreases, the discharge volume decreases, and the peak negative pressure increases or the negative pressure establishment speed increases, thus achieving negative pressure intensity adjustment. Rotating rod 15 is connected to valve 13 via a transmission mechanism; the user can rotate rotating rod 15 to drive the valve core or valve plate to rotate / displace, thereby changing the opening of valve 13. A connector pipe 17 is installed at the end of pressure pipe 12. The connector pipe 17 can adopt a conical seal or stepped seal structure for reliable connection with hoses or pipe fittings. The connector pipe 17 facilitates the disassembly and cleaning of related components of pressure pipe 12 and allows for easy replacement of pressure pipes 12 of different specifications.

[0052] like Figure 2 and Figure 4 As shown, a deflector plate 16 is provided between the connecting hose 4 and the elastic compression bladder 5. The deflector plate 16 can be arranged inside the connection seat between the connecting hose 4 and the elastic compression bladder 5, or in the pipeline cavity near the inlet of the elastic compression bladder 5. The deflector plate 16 is inclined relative to the main direction of airflow, so that the airflow is deflected when it passes through. When the airflow enters the side of the elastic compression bladder 5 from the connecting hose 4, the deflector plate 16 guides the airflow to change direction, reducing the droplet entrainment caused by the direct airflow. When there is a backflow tendency, such as emulsion splashing or condensate migrating along the pipe wall, the droplets are easy to gather and fall back at the deflector plate 16 under the action of gravity, reducing the probability of the droplets continuing to move towards the elastic compression bladder 5. The deflector plate 16 can form a local liquid-blocking space with the connection part, so that the liquid is preferentially retained on the side away from the elastic compression bladder 5, thereby improving the backflow prevention capability.

[0053] Through all the above embodiments, the working principle of the present invention is as follows: During assembly, the bottle cap assembly 2 is screwed and pressed tightly to seal the milk collection bottle 3 by the internal thread 10 and the external thread 9; the breast suction shield 1 is connected to the extension tube 7 and communicates with the bottle cap assembly 2; the connecting hose 4 is connected to the negative pressure channel 20 of the bottle cap assembly 2 by the connecting tube 18, and the other end of the connecting hose 4 is connected to the elastic compression bladder 5, ensuring that the deflection plate 16 is at the connection point; during use, the breast suction shield 1 fits the breast, and the contact layer 6 forms a flexible seal; the user repeatedly squeezes and releases... The elastic squeezing capsule 5 creates a pulsating negative pressure within the negative pressure channel 20. Under this negative pressure, the emulsion flows into the milk collection bottle 3 through the emulsion channel 19. The user can adjust the negative pressure and the pumping rhythm by rotating the rotating rod 15 to change the opening of the valve 13, thus adjusting the amount of negative pressure. The limiting spring 14 provides positioning / limiting for more stable adjustment. During use, the separating tube 11 isolates the emulsion channel 19 from the negative pressure channel 20, and the deflecting plate 16 inhibits liquid from entering the elastic squeezing capsule 5, thereby improving hygiene and safety and negative pressure stability.

[0054] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary. Under the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0055] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A negative pressure generating automatic breast pump device, characterized in that, Includes a breast pump (1), a cap assembly (2), a milk collection bottle (3), a connecting tube (4), and an elastic compression capsule (5); The bottle cap assembly (2) is detachably connected to the milk collection bottle (3), and the breast suction shield (1) is connected to the bottle cap assembly (2); The bottle cap assembly (2) forms an emulsion channel (19) and a negative pressure channel (20). The emulsion channel (19) is connected to the milk collection bottle (3) to collect the emulsion. The negative pressure channel (20) is connected to the connecting hose (4) through the connecting pipe (18). The other end of the connecting hose (4) is connected to the elastic compression bladder (5) so that the elastic compression bladder (5) generates pulsating negative pressure on the negative pressure channel (20) during compression and rebound. The elastic compression bladder (5) is provided with a pressure tube (12), and the pressure tube (12) is provided with a through valve (13). A limiting spring (14) and a rotating rod (15) are used to adjust the opening of the through valve (13), thereby realizing the adjustable control of the pulsating negative pressure. A deflection plate (16) is provided between the connecting hose (4) and the elastic compression bladder (5) to deflect the airflow and reduce the risk of liquid flowing back to the elastic compression bladder (5) along the connecting hose (4).

2. The negative pressure generating automatic breast pump device according to claim 1, characterized in that, The breast shield (1) has a contact layer (6) on the side that contacts the human body. The contact layer (6) is made of a flexible material and can be detachably assembled onto the breast shield (1).

3. The negative pressure generating automatic breast pump device according to claim 2, characterized in that, An extension tube (7) is provided between the breast shield (1) and the bottle cap assembly (2). One end of the extension tube (7) is connected to the breast shield (1), and the other end is connected to the bottle cap assembly (2) to extend the flow channel between the breast shield (1) and the bottle cap assembly (2) and improve the operating space.

4. The negative pressure generating automatic breast pump device according to claim 1, characterized in that, The milk collection bottle (3) is provided with an external thread (9), and the bottle cap assembly (2) is provided with an internal thread (10) that mates with the external thread (9) so as to realize the screw connection between the bottle cap assembly (2) and the milk collection bottle (3).

5. The negative pressure generating automatic breast pump device according to claim 1, characterized in that, The outer surface of the milk collection bottle (3) is provided with anti-slip grooves (8).

6. The negative pressure generating automatic breast pump device according to claim 1, characterized in that, The bottle cap assembly (2) is provided with a separation tube (11), which divides the fluid path in the bottle cap assembly (2) into an emulsion channel (19) and a negative pressure channel (20) to achieve gas-liquid separation.

7. The negative pressure generating automatic breast pump device according to claim 6, characterized in that, The negative pressure channel (20) is located above the emulsion channel (19), and the negative pressure channel (20) is connected to the connecting hose (4) via the connecting pipe (18), thereby reducing the probability of emulsion entering the negative pressure channel (20).

8. The negative pressure generating automatic breast pump device according to claim 1, characterized in that, The valve (13) is installed on the pressure pipe (12), and the rotating rod (15) is connected to the valve (13) in a transmission manner. When the rotating rod (15) rotates, it changes the opening degree of the valve (13) to achieve the adjustment of negative pressure intensity.

9. The negative pressure generating automatic breast pump device according to claim 8, characterized in that, The limiting spring (14) acts on the deflection plate (16) to provide rotational damping, limiting or resetting function, so that the opening of the valve (13) is maintained at a set position or returns to a preset position after the external force is released.

10. The negative pressure generating automatic breast pump device according to claim 9, characterized in that, The pressure tube (12) is provided with a connector tube (17) at its end for connecting to the hose (4) to achieve a detachable and sealed connection.

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