CN113577420B

CN113577420B - Built-in negative pressure type breast pump

Info

Publication number: CN113577420B
Application number: CN202110685385.XA
Authority: CN
Inventors: 张晓燕
Original assignee: Kunshan Haochuang Electronic Technology Co ltd
Current assignee: Kunshan Haochuang Electronic Technology Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2023-10-13
Anticipated expiration: 2041-06-21
Also published as: CN113577420A

Abstract

The invention discloses a built-in negative pressure type breast pump, which comprises a suction device component and a negative pressure source, wherein the suction device component comprises a milk storage bottle, a breast shield and a connecting part, and the connecting part is provided with a first end part, a second end part and a third end part which are respectively communicated with the milk storage bottle, the breast shield and the negative pressure source; the breast pump also comprises a negative pressure regulator and a unidirectional milk channel. On one hand, the negative pressure regulator is internally arranged, and the formed negative pressure regulating space is enlarged, so that the milk quantity which can be expressed at one time is large, repeated milk sucking is not needed, and breast distending pain of a puerpera is relieved rapidly; on the other hand, the negative pressure is kept in the feeding bottle, the state that the baby sucks the breast milk is simulated, the effects of massage and lactation promotion are achieved, in addition, the puerpera is very comfortable and free of pain when using the feeding bottle, meanwhile, the whole process of the cavity for sucking the milk is closed, the problem of milk outflow when the baby is in a recumbent state or in a lateral state is effectively solved, and the feeding bottle is particularly suitable for the mother who is in a Caesarean state.

Description

Built-in negative pressure type breast pump

Technical Field

The invention belongs to the field of breast pumps, and particularly relates to a built-in negative pressure type breast pump.

Background

As is known, when a puerpera gives off an infant, the puerpera cannot timely express milk, and the infant cannot naturally and smoothly give off milk, and a milk sucking tool is needed to be used for timely milk production; however, some puerpera has excessive sucking capacity after milk production relative to infants, so that the puerpera has breast pain, and the puerpera also needs to suck out excessive milk by a milk sucking tool.

Currently, the breast pumps on the market comprise an electric breast pump and a manual breast pump, and the basic principle of the breast pump is to suck milk in a negative pressure adsorption mode.

However, in actual use, the existing breast pumps are prone to the following problems:

1) The milk quantity which can be expressed at one time is small, and once the puerpera has too much milk, the swelling and pain of the puerpera breast can be relieved by repeated milk absorption, so that the time and the labor are wasted, the swelling and pain can not be quickly relieved, and the experience is poor;

2) Generally, in the milk sucking process, the milk drips into the milk bottle by self weight, and no pressure is generated in the milk bottle, so that milk outflow is easily caused when the milk bottle is in reclined or lateral lying suction;

3) In the whole milk sucking process, as no negative pressure exists in the milk bottle, the milk sucking state of the nipple of the mother can not be simulated, not only can a good milk sucking effect not be generated, but also the milk sucking discomfort of a puerpera can be easily caused, and the effects of massaging and promoting milk secretion can not be achieved.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects of the prior art and providing an improved built-in negative pressure breast pump.

In order to solve the technical problems, the invention adopts the following technical scheme:

a built-in negative pressure breast pump comprises a suction device component and a negative pressure source, wherein the suction device component comprises a milk storage bottle, a breast shield and a connecting part, the connecting part is provided with a first end part, a second end part and a third end part which are respectively communicated with the milk storage bottle, the breast shield and the negative pressure source,

the breast shield comprises a horn-shaped breast sucking part and a bionic infant nipple,

a first cavity is formed between the first end part and the milk storage bottle, a second cavity is formed between the second end part and the milk sucking cover, an air flow channel is formed in the third end part and is provided with a connecting end and a plug-in end, wherein the connecting end is connected with the first end part, the air flow channel is communicated with the first cavity, and the plug-in end is separated from the outer side of the first end part;

the breast pump still includes the negative pressure regulator that is located first cavity and stretches into in the storage feeding bottle from the bottleneck, and the one-way milk passageway that negative pressure regulator and the inner chamber of storage feeding bottle are linked together, wherein the negative pressure regulator has first minute chamber and the second minute chamber of mutual separation, first minute chamber and third end intercommunication, second minute chamber and second cavity intercommunication, the inner chamber is linked together with first minute chamber or second minute chamber, during the milk sucking, the intracavity forms the negative pressure, the bionic infant nipple can simulate and be the upper and lower jaw relative motion of baby.

Preferably, the negative pressure regulator comprises a sleeve sleeved on the bottle mouth and extending into the inner cavity, and an inner partition arranged on the sleeve and forming a first sub-cavity and a second sub-cavity, wherein the second cavity is provided with a milk channel, the second sub-cavity is communicated with the second cavity through the milk channel, a milk outlet is formed at the bottom of the sleeve, the one-way milk channel is communicated with the milk outlet, and the inner partition changes the volume of the first sub-cavity and the second sub-cavity along with the change of negative pressure. The negative pressure is built in the milk storage bottle, so that the design is simple, the volume is small, and the carrying is convenient.

Specifically, the second end includes an end body having a port for interfacing with the breastshield, wherein the end body forms a milk outlet from a spaced portion of the first cavity, and the milk channel interfaces with the milk outlet.

Further, the breast-sucking cover comprises a horn-shaped breast-sucking part and a bionic baby nipple, wherein the breast-sucking part is butted at a butt joint port of the end body from the closing end part of the horn, the bionic baby nipple comprises an inner plug body plugged into the inner cavity of the breast-sucking part, and a plug sleeve arranged at the outer end part of the inner plug body and sleeved at the edge of the horn opening of the breast-sucking part, the inner plug body is provided with a thickening part and a thin wall part, the thin wall part deforms along with the inner plug body when sucking milk, and the thickening part simulates the relative movement of the upper jaw and the lower jaw of a baby. When sucking milk, the infant nipple can simulate the process of sucking breast milk by the infant through the opening and closing movement of the bionic infant nipple, so that the effects of massage and lactation promotion can be achieved, and the puerpera is very comfortable to use and has no pain.

Preferably, an air flow passage is formed in a side wall of the sleeve, the air flow passage communicating with the first subchamber or the second subchamber. The negative pressure is always present in the bottle cavity of the milk storage bottle, the milk amount extracted at one time is large, and the swelling pain of the breasts of the puerpera is relieved rapidly.

According to one specific implementation and preferred aspect of the invention, the inner partition comprises a joint and a piston capable of being folded or unfolded, wherein the joint is sleeved on the liquid outlet end part of the milk channel, one end part of the piston is connected to the joint, the other end part of the piston is in sealing fit with the inner wall of the sleeve and moves relatively along the length direction of the sleeve, and the second sub cavity comprises a piston inner cavity capable of being unfolded or folded along with the piston and a movable cavity positioned between the piston and the sleeve. The negative pressure is generated in the milk storage bottle through the movement of the piston, and the structure is simple and reliable and is convenient to implement.

Specifically, the liquid outlet end of the connector forms a milk cavity, the milk cavity is gradually reduced along the length direction of the milk channel, the piston is in a frustum shape with the outer diameter gradually enlarged along the length direction of the milk channel, the top of the frustum is butted with the liquid outlet end of the connector, and the bottom of the frustum is slidably arranged on the inner wall of the sleeve. The arrangement is that the contact area between the piston and the sleeve is small, the resistance of the piston to movement is reduced, and the milk sucking process is easier to carry out.

According to yet another specific and preferred aspect of the present invention, the inner spacer comprises a balloon assembly disposed on the sleeve, wherein an air cavity is formed in the balloon assembly, the air cavity and the inner cavity of the first end form a first subchamber, the cavity formed between the balloon assembly and the sleeve is a second subchamber, and the second subchamber is in communication with the milk channel. So arranged, when the first subchamber contracts, the second subchamber expands with it, easily creating sufficient negative pressure for expression of milk.

Specifically, the air bag component comprises a sleeve ring sleeved on the edge of the cylinder opening of the sleeve, and two or more air bags communicated with each other and formed in the sleeve ring, wherein a milk flow passage which is used for communicating a milk passage with the second subchamber is formed between the two or more air bags.

Further, the inner partition further comprises a connector for connecting the milk channel with the milk channel. This arrangement prevents milk from overflowing the milk channel.

According to a further specific and preferred aspect of the invention, the balloon assembly comprises a balloon cover having one end communicating with the milk channel and the other end covering the sleeve, the balloon cover forming a first subchamber with the inner chamber of the first end, the chamber formed between the balloon cover and the sleeve being a second subchamber.

Specifically, one end of the air bag cover comprises a cannula inserted from the milk channel, and a cladding sleeve formed around the cannula and cladding the periphery of the milk channel, the other end of the air bag cover is covered on the end face of the barrel mouth of the sleeve, and the outer diameter of the air bag cover is gradually increased from one end to the other end. When the device is used for sucking, the surface of the air bag cover bears a large negative pressure, so that the air bag cover is easier to deform, and further negative pressure capable of sucking milk is generated.

According to still another specific implementation and preferred aspect of the present invention, a milk channel is formed on the second cavity, the negative pressure regulator includes a spacer extending from an inner wall of the first end into the inner cavity, a sleeve located in the inner cavity, and an inner spacer disposed on the sleeve and located in the spacer, wherein one end of the inner spacer is communicated with the milk channel, the other end of the inner spacer is connected with the spacer and the sleeve, the inner spacer, the sleeve, the spacer, and the inner wall of the first end form a first separated cavity and a second separated cavity, a milk outlet is formed at the bottom of the sleeve, the one-way milk channel is communicated with the milk outlet, and the inner spacer changes the volume of the first separated cavity and the second separated cavity along with the change of negative pressure.

Specifically, the diameter of the sleeve is R1, the diameter of the spacer bush is R2, the diameter of the milk channel is R3, wherein R1 is more than R2 and more than R3, the diameter of a cavity formed by the inner spacer from the milk channel to the sleeve is gradually increased, and the end part of the inner spacer, far away from the milk channel, is positioned between the inner wall of the sleeve and the outer wall of the spacer bush at the butt joint end part.

Further, an air flow channel is formed in the spacer bush or the sleeve, and the air flow channel is communicated with the first sub-cavity or the second sub-cavity. By the arrangement, when sucking milk, the negative pressure state in the milk storage bottle can be kept all the time, and the milk sucking effect is improved.

Preferably, the second end comprises an end body having a port for interfacing with a breastshield, wherein the end body forms a milk outlet from a spaced portion from the first cavity, the milk channel interfacing with the milk outlet;

the breast-sucking cover comprises a horn-shaped breast-sucking part and a bionic baby nipple, wherein the breast-sucking part is butted with a butt joint port of the end body from the closing end part of the horn, the bionic baby nipple comprises an inner plug body plugged into the inner cavity of the breast-sucking part, a plug sleeve arranged at the outer end part of the inner plug body and sleeved at the edge of a horn opening of the breast-sucking part, and a plug arranged at the inner end part of the inner plug body, the inner plug body is provided with a thickening part and a thin wall part, the thin wall part deforms along with the inner plug body when sucking milk, the thickening part simulates relative movement of the upper jaw and the lower jaw of a baby, and sucked milk drops to a milk channel below from the plug. By the arrangement, the opening at the inner end part of the inner plug body is reduced, and the inner plug body can better simulate sucking action of an infant during sucking milk.

In addition, the third end part is internally provided with an air flow channel and is provided with a connecting end and a plugging end, wherein the connecting end is connected with the first end part, the air flow channel is communicated with the first sub-cavity, and the plugging end is separated from the outer side of the first end part. Thus, the negative pressure source is convenient to connect.

Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:

on one hand, the negative pressure regulator is internally arranged, and the formed negative pressure regulating space is enlarged, so that the milk quantity which can be expressed at one time is large, repeated milk sucking is not needed, and breast distending pain of a puerpera is relieved rapidly; on the other hand, the negative pressure is kept in the feeding bottle, the state that the baby sucks the breast milk is simulated, the effects of massage and lactation promotion are achieved, in addition, the puerpera is very comfortable and free of pain when using the feeding bottle, meanwhile, the whole process of the cavity for sucking the milk is closed, the problem of milk outflow when the baby is in a recumbent state or in a lateral state is effectively solved, and the feeding bottle is particularly suitable for the mother who is in a Caesarean state.

Drawings

FIG. 1 is a schematic view in half section of a built-in negative pressure breast pump of example 1;

FIG. 2 is a schematic view of the sleeve of FIG. 1;

FIG. 3 is a schematic semi-sectional view of the internal negative pressure breast pump of example 2;

FIG. 4 is a schematic view of the air bag assembly of FIG. 3;

FIG. 5 is a schematic view of the air bag assembly of FIG. 3 (another view);

FIG. 6 is a schematic semi-sectional view of the internal negative pressure breast pump of example 3;

FIG. 7 is a schematic view of the airbag cover of FIG. 6;

FIG. 8 is a schematic view in half section of a built-in negative pressure breast pump of example 4;

wherein: 1. a aspirator assembly; 10. a milk storage bottle; 11. a breast shield; 110. a breast pump; 111. bionic baby nipple; s0, an inner plug body; s00, a thickening part; s01, a thin wall part; s1, a plug sleeve; s2, a plug nozzle; 12. a connection part; d1, a first end; q1, a first cavity; d2, a second end; d20, an end body; k1, a milk outlet; q2, a second cavity; r1, milk channel; d3, a third end part; d30, a connecting end; d31, a plug end;

2. a negative pressure regulator; 20. a sleeve; k2, milk outlet; k3, an airflow channel; 21. an inner spacer; f1, first sub-cavities; f2, a second subchamber; f20, a piston inner cavity; f21, a movable cavity; 210. a joint; q3, milk cavity; 211. a piston; 212. an airbag module; t0, collar; t1, an air bag; r2, milk flow channel; 213. a connector; 214. an airbag cover; g0, intubation; g1, coating a sleeve; 22. a spacer bush;

3. a unidirectional milk channel.

Detailed Description

The present invention will be described in detail with reference to the drawings and the detailed description, so that the above objects, features and advantages of the present invention can be more clearly understood. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Example 1

As shown in fig. 1, the internal negative pressure breast pump according to the present embodiment is a piston breast pump, which includes a pump assembly 1, a negative pressure regulator 2, a one-way milk channel 3, and a negative pressure source.

Specifically, the extractor assembly 1 includes a milk storage bottle 10, a breast-sucking cap 11, and a connection portion 12, wherein the connection portion 12 has a first end d1, a second end d2, and a third end d3, which are respectively communicated with the milk storage bottle 10, the breast-sucking cap 11, and a negative pressure source, a first cavity q1 is formed between the first end d1 and the milk storage bottle 10, a second cavity q2 is formed between the second end d2 and the breast-sucking cap 11, and a milk channel r1 extending downward is formed on the second cavity q 2.

The milk storage bottle 10 is connected with the first end d1 through screw threads from the periphery of the bottle mouth.

For ease of implementation, the second end d2 comprises an end body d20 having a port for interfacing with the breastshield 11, wherein the end body d20 forms a milk outlet k1 from a spaced portion from the first cavity q1, and the milk channel r1 interfaces with the milk outlet k 1.

The breast shield 11 comprises a horn-shaped breast pumping part 110 and a bionic infant nipple 111, wherein the breast pumping part 110 is butted at a butt joint port of the end body d20 from a closing end part of the horn, the bionic infant nipple 111 comprises an inner plug body s0 plugged into an inner cavity of the breast pumping part 110, a plug sleeve s1 arranged at the outer end part of the inner plug body s0 and sleeved at the edge of a horn opening of the breast pumping part 110, the inner plug body s0 is provided with a thickening part s00 and a thin wall part s01, the thin wall part s01 deforms along with the thickening part s00, and the thickening part s00 simulates the relative movement of the upper jaw and the lower jaw of an infant. When sucking milk, the infant nipple can simulate the process of sucking breast milk by the infant through the opening and closing movement of the bionic infant nipple, so that the effects of massage and lactation promotion can be achieved, and the puerpera is very comfortable to use and has no pain.

Meanwhile, the bionic infant nipple 111 in this example is made of silica gel.

The negative pressure regulator 2 comprises a sleeve 20 sleeved on the bottle mouth and extending into the inner cavity of the milk storage bottle 10, and an inner partition 21 arranged on the sleeve 20 and forming a first sub-cavity f1 and a second sub-cavity f2, wherein the first sub-cavity f1 is communicated with a third end d3, the second sub-cavity f2 is communicated with the second cavity q2 through a milk channel r1, and the inner partition 21 changes the volume of the first sub-cavity f1 and the second sub-cavity f2 along with the change of negative pressure during milk sucking. The negative pressure is built in the milk storage bottle, so that the design is simple, the volume is small, and the carrying is convenient.

Specifically, a milk outlet k2 is formed at the bottom of the sleeve 20, and the one-way milk channel 3 communicates with the milk outlet k 2. Thus, the negative pressure regulator is communicated with the inner cavity of the milk storage bottle, so that the milk storage bottle is convenient for collecting milk.

As shown in fig. 2, an air flow passage k3 is formed in the sidewall of the sleeve 20, and the inner cavity of the milk storage bottle 10 is communicated with the first sub-cavity f1 through the air flow passage k3, and when sucking milk, the inner cavity of the milk storage bottle 10 forms negative pressure. The negative pressure is always present in the bottle cavity of the milk storage bottle, the milk amount extracted at one time is large, and the swelling pain of the breasts of the puerpera is relieved rapidly.

In this example, the inner spacer 21 includes a joint 210, a piston 211 that can be folded or unfolded.

The joint 210 is sleeved on the liquid outlet end of the milk channel r1, one end of the piston 211 is connected to the joint 210, the other end of the piston 211 is in sealing fit with the inner wall of the sleeve 20 and moves up and down, and the second sub-cavity f2 comprises a piston inner cavity f20 which can be unfolded or folded along with the piston 211 and a movable cavity f21 which is positioned between the piston 211 and the sleeve 20. The negative pressure is generated in the milk storage bottle through the movement of the piston, and the structure is simple and reliable and is convenient to implement.

Specifically, the liquid outlet end of the connector 210 forms a milk cavity q3, the milk cavity q3 gradually decreases from top to bottom, the piston 211 is in a frustum shape with gradually increased outer diameter from top to bottom, the top of the frustum is butt-jointed with the liquid outlet end of the connector 210, and the bottom of the frustum is slidably arranged on the inner wall of the sleeve 20. The arrangement is that the contact area between the piston and the sleeve is small, the resistance of the piston to movement is reduced, and the milk sucking process is easier to carry out.

In addition, an air flow channel is formed inside the third end d3 and is provided with a connecting end d30 and a plugging end d31, wherein the connecting end d30 is connected with the first end d1, the air flow channel is communicated with the first sub-cavity f1, and the plugging end d31 is separated from the outer side of the first end d 1. Thus, the negative pressure source is convenient to connect.

Example 2

As shown in fig. 3, the internal negative pressure breast pump according to the present embodiment is a lung lobe type breast pump, and is different from embodiment 1 in the inner spacer 21.

In this example, the inner spacer 21 includes a balloon assembly 212 disposed on the sleeve 20, wherein an air cavity is formed in the balloon assembly 212, the air cavity and the inner cavity of the first end d1 form a first sub-cavity f1, and a cavity formed between the balloon assembly 212 and the sleeve 20 is a second sub-cavity f2. So arranged, when the first subchamber contracts, the second subchamber expands with it, easily creating sufficient negative pressure for expression of milk.

Specifically, the first sub-cavity f1 is communicated with the third end d3, the second sub-cavity f2 is communicated with the second cavity q2 through the milk channel r1, is communicated with the inner cavity of the milk storage bottle 10 through the air flow channel k3, and the volume of the first sub-cavity f1 and the volume of the second sub-cavity f2 are changed along with the negative pressure change of the inner partition piece 21 during milk sucking. So arranged, when the first subchamber contracts, the second subchamber expands with it, easily creating sufficient negative pressure for expression of milk.

As shown in fig. 4 to 5, the air bag assembly 212 includes a collar t0 sleeved on the rim of the nozzle of the sleeve 20, and two air bags t1 formed in the collar t0, wherein a milk channel r2 is formed between the two air bags t1 to communicate the milk channel r1 with the second sub-chamber f2. The two air bags t1 are parallel and form a lung shape, simulate the state that an infant sucks breast milk, and have better breast sucking effect.

The inner spacer 21 further includes a connector 213 for connecting the milk channel r1 to the milk channel r2. This arrangement prevents milk from overflowing the milk channel.

Example 3

As shown in fig. 6, the internal negative pressure type breast pump according to the present embodiment is an air bag cap type breast pump, and is different from embodiment 1 only in the inner spacer 21.

In this example, the inner spacer 21 includes an air bag cover 214 with one end communicating with the milk channel r1 and the other end covering the sleeve 20, the air bag cover 214 and the inner cavity of the first end d1 form a first sub-cavity f1, and a cavity formed between the air bag cover 214 and the sleeve 20 is a second sub-cavity f2.

As shown in fig. 7, one end of the air bag cover 214 includes a cannula g0 inserted from within the milk channel r1, bao Futao g1 formed around the cannula g0 and covering the outer periphery of the milk channel r1, the other end of the air bag cover 214 is covered on the end face of the nozzle of the sleeve 20, and the outer diameter of the air bag cover 214 is gradually increased from one end to the other end. When the device is used for sucking, the surface of the air bag cover bears a large negative pressure, so that the air bag cover is easier to deform, and further negative pressure capable of sucking milk is generated.

Example 4

As shown in fig. 8, the internal negative pressure type breast pump according to the present embodiment is a diaphragm type breast pump, and differs from embodiment 1 mainly in the negative pressure regulator 2.

Specifically, the negative pressure regulator 2 includes a spacer 22 extending from the inner wall of the first end d1 into the cavity of the milk bottle 10, a sleeve 20 positioned within the cavity of the milk bottle 10, and an inner spacer 21 disposed on the sleeve 20 and positioned within the spacer 22.

One end of the inner partition piece 21 is communicated with the milk channel r1, the other end of the inner partition piece is connected with the spacer 22 and the sleeve 20, the inner walls of the inner partition piece 21, the sleeve 20, the spacer 22 and the first end d1 form a first sub-cavity f1 and a second sub-cavity f2 which are separated from each other, a milk outlet k2 is formed at the bottom of the sleeve 20, the one-way milk channel 3 is communicated with the milk outlet k2, and the volume of the first sub-cavity f1 and the volume of the second sub-cavity f2 are changed along with negative pressure change of the inner partition piece 21.

In this example, the diameter of the sleeve 20 is R1, the diameter of the spacer 22 is R2, the diameter of the milk channel R1 is R3, where R1 > R2 > R3, the diameter of the cavity formed by the inner spacer 21 from the milk channel R1 to the sleeve 20 is gradually increased, and the end of the inner spacer 21 away from the milk channel R1 is located between the inner wall of the sleeve 20 and the outer wall of the spacer 22 at the butt joint end.

Further, an airflow passage k3 is formed in the sleeve 20, and the airflow passage k3 communicates with the second sub-chamber f2. By the arrangement, when sucking milk, the negative pressure state in the milk storage bottle can be kept all the time, and the milk sucking effect is improved.

Meanwhile, this embodiment is also different from embodiment 1 in that: the bionic infant nipple 111 of the embodiment includes an inner plug body s0 plugged into the inner cavity of the breast pumping part 110, a plug sleeve s1 arranged at the outer end part of the inner plug body s0 and sleeved at the edge of the horn opening of the breast pumping part 110, and a plug nozzle s2 arranged at the inner end part of the inner plug body s0, wherein the inner plug body s0 is formed with a thickened part s00 and a thin wall part s01, the thin wall part s01 deforms along with the inner plug body s0 when sucking milk, the thickened part s00 simulates the relative movement of the upper jaw and the lower jaw of an infant, and the plug nozzle s2 is positioned above the milk outlet k 1.

In summary, the present embodiment has the following advantages:

1. the negative pressure regulator is built in, so that the formed negative pressure regulating space is enlarged, the milk amount which can be expressed at one time is large, repeated milk absorption is not needed, breast pain of a puerpera is relieved rapidly, and particularly manual milk absorption is realized, so that the labor is saved relatively;

2. the negative pressure is kept in the milk bottle, the state that the infant sucks the breast milk is simulated, the effects of massage and lactation promotion are achieved, and the puerpera is very comfortable and free from pain;

3. the whole process of the cavity for sucking milk is closed, so that the phenomenon of milk outflow can not occur, the problem of milk outflow when the milk is sucked in a recumbent or lateral lying way is effectively solved, and the milk sucking cavity is particularly suitable for a mother in Caesarean section;

4. negative pressure is regulated, piston type, lung type, air bag cover type and the like are adopted, the style is diversified, and the body feeling of a user is enhanced;

5. simple structure, installation and dismantlement are convenient, and under the setting of silica gel moreover, not only nontoxic harmless, be convenient for clean, and in addition, comfortable with the contact sense of skin, in addition, processing is convenient, the production of being convenient for.

The present invention has been described in detail with the purpose of enabling those skilled in the art to understand the contents of the present invention and to implement the same, but not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a built-in negative pressure breast pump, its includes aspirator subassembly, negative pressure source, aspirator subassembly include storage feeding bottle, breast-sucking cover and connecting portion, wherein connecting portion have with first tip, second tip and the third tip that storage feeding bottle, breast-sucking cover and negative pressure source are linked together respectively, its characterized in that: the breast shield comprises a horn-shaped breast pumping part and a bionic baby nipple, the bionic baby nipple is made of silica gel, a first cavity is formed between the first end part and the milk storage bottle, the milk storage bottle is connected with the first end part in a matched manner through threads from the periphery of the bottle opening, and a second cavity is formed by the second end part and the breast shield; the milk pump further comprises a negative pressure regulator which is positioned in the first cavity and stretches into the milk storage bottle from the bottle opening, and a one-way milk channel which is communicated with the inner cavity of the milk storage bottle, wherein the negative pressure regulator is provided with a first sub-cavity and a second sub-cavity which are mutually separated, the first sub-cavity is communicated with the third end, the second sub-cavity is communicated with the second cavity, the inner cavity is communicated with the first sub-cavity or the second sub-cavity, the negative pressure regulator comprises a sleeve sleeved on the bottle opening and stretching into the inner cavity, and an inner partition which is arranged on the sleeve and forms the first sub-cavity and the second sub-cavity, and the air flow channel is formed on the side wall of the sleeve and is communicated with the first sub-cavity or the second sub-cavity; during milk sucking, negative pressure is formed in the inner cavity, the bionic infant nipple can simulate the relative movement of the upper jaw and the lower jaw of an infant, and the volume of the first sub-cavity and the volume of the second sub-cavity are changed along with the change of the negative pressure by the inner partition.

2. The internal negative pressure breast pump of claim 1, wherein: the milk channel is arranged on the second cavity, the second sub-cavity is communicated with the second cavity through the milk channel, a milk outlet is formed at the bottom of the sleeve, and the one-way milk channel is communicated with the milk outlet.

3. The internal negative pressure breast pump of claim 2, wherein: the second end includes an end body having a docking port with the breastshield, wherein the end body forms a milk outlet from a spaced portion with the first cavity, the milk channel being docked with the milk outlet.

4. A built-in negative pressure breast pump according to claim 3, wherein: the bionic infant nipple comprises an inner plug body plugged into the inner cavity of the breast pumping part, a plug sleeve arranged at the outer end of the inner plug body and sleeved at the edge of the horn opening of the breast pumping part, wherein the inner plug body is provided with a thickening part and a thin wall part, the thin wall part deforms along with the thickening part when the milk is pumped, and the thickening part simulates the relative movement of the upper jaw and the lower jaw of an infant.

5. The internal negative pressure breast pump of claim 2 or 3 or 4, wherein: the inner partition comprises a joint and a piston capable of being folded or unfolded, wherein the joint is sleeved on the liquid outlet end part of the milk channel, one end part of the piston is connected to the joint, the other end part of the piston is in sealing fit with the inner wall of the sleeve and moves relatively along the length direction of the sleeve, and the second sub cavity comprises a piston inner cavity capable of being unfolded or unfolded along with the piston and a movable cavity located between the piston and the sleeve.

6. The internal negative pressure breast pump of claim 5, wherein: the milk cavity that the play liquid end of joint formed just the milk cavity is followed milk passageway length direction diminishes gradually and sets up.

7. The internal negative pressure breast pump of claim 5, wherein: the piston is in a frustum shape with the outer diameter gradually becoming larger along the length direction of the milk channel, wherein the top of the frustum is in butt joint with the liquid outlet end of the joint, and the bottom of the frustum is arranged on the inner wall of the sleeve in a sliding manner.

8. The internal negative pressure breast pump of claim 2 or 3 or 4, wherein: the inner partition comprises an air bag component arranged on the sleeve, wherein an air cavity is formed in the air bag component, the air cavity and the inner cavity of the first end part form a first sub-cavity, a cavity formed between the air bag component and the sleeve is a second sub-cavity, and the second sub-cavity is communicated with the milk channel.

9. The internal negative pressure breast pump of claim 8, wherein: the air bag component comprises a lantern ring sleeved at the edge of the cylinder opening of the sleeve and two or more air bags communicated with each other, wherein a milk flow passage which is used for communicating the milk passage with the second subchamber is formed between the two or more air bags.

10. The internal negative pressure breast pump of claim 9, wherein: the inner partition also comprises a connector for connecting the milk channel with the milk channel.

11. The internal negative pressure breast pump of claim 8, wherein: the air bag assembly comprises an air bag cover, one end of the air bag cover is communicated with the milk channel, the other end of the air bag cover covers the sleeve, the air bag cover and the inner cavity of the first end form a first sub-cavity, and a cavity formed between the air bag cover and the sleeve is a second sub-cavity.

12. The internal negative pressure breast pump of claim 11, wherein: the air bag cover comprises an insertion tube inserted into the milk channel, and a coating sleeve formed on the periphery of the insertion tube and coated on the periphery of the milk channel, wherein the other end of the air bag cover is covered on the end face of the sleeve opening of the sleeve, and the outer diameter of the air bag cover is gradually increased from the one end to the other end.

13. The utility model provides a built-in negative pressure breast pump, its includes aspirator subassembly, negative pressure source, aspirator subassembly include storage feeding bottle, breast-sucking cover and connecting portion, wherein connecting portion have with first tip, second tip and the third tip that storage feeding bottle, breast-sucking cover and negative pressure source are linked together respectively, its characterized in that: the breast shield comprises a horn-shaped breast pumping part and a bionic baby nipple, the bionic baby nipple is made of silica gel, a first cavity is formed between the first end part and the milk storage bottle, the milk storage bottle is connected with the first end part in a matched manner through threads from the periphery of the bottle opening, a second cavity is formed by the second end part and the breast shield, and a milk channel extending downwards is formed in the second cavity; the utility model provides a milk pump, including first end, second end, milk pump, air current passageway is formed with inside the third end and have link and grafting end, wherein the link is connected with first end, air current passageway is linked together with first cavity, grafting end separates with the outside of first end, milk pump still includes and is located in the first cavity and stretches into the negative pressure regulator in the milk bottle from the bottleneck, and the negative pressure regulator with the one-way milk passageway that the inner chamber of milk bottle is linked together, wherein the negative pressure regulator has first partial chamber and the second partial chamber of mutual separation, first partial chamber with third end intercommunication, the second partial chamber with second cavity intercommunication, the inner chamber with first partial chamber or second partial chamber is linked together offer milk passageway on the second cavity, just the negative pressure regulator includes from the inner wall of first end to the spacer that extends in the inner chamber, be located the sleeve, and set up on the sleeve and be located the inner spacer inside, wherein the inner spacer have a tip with another partial chamber, second partial chamber and second partial chamber are linked together with the inner wall change, the one-way milk passageway is formed with the second partial chamber and the second partial chamber is linked together with the inner wall, the second partial chamber is changed.

14. The internal negative pressure breast pump of claim 13, wherein: the diameter of the sleeve is R1, the diameter of the spacer bush is R2, and the diameter of the milk channel is R3, wherein R1 is more than R2 and more than R3.

15. The internal negative pressure breast pump of claim 13, wherein: the diameter of the cavity formed by the inner partition member from the milk channel to the sleeve is gradually increased, and the end part of the inner partition member, which is far away from the milk channel, is positioned between the inner wall of the sleeve and the outer wall of the spacer sleeve at the butt joint end part.

16. The internal negative pressure breast pump of claim 13 or 14 or 15, wherein: an air flow channel is formed in the spacer bush or the sleeve, and the air flow channel is communicated with the first sub-cavity or the second sub-cavity.

17. The internal negative pressure breast pump of claim 13, wherein: the second end includes an end body having a docking port with the breastshield, wherein the end body forms a milk outlet from a spaced portion with the first cavity, the milk channel being docked with the milk outlet.

18. The internal negative pressure breast pump of claim 17, wherein: the bionic infant nipple comprises an inner plug body plugged into the inner cavity of the milk sucking part, a plug sleeve arranged at the outer end of the inner plug body and sleeved at the edge of a horn opening of the milk sucking part, and a plug arranged at the inner end of the inner plug body, wherein the inner plug body is provided with a thickening part and a thin wall part, the thin wall part deforms along with the thickening part when sucking milk, the thickening part simulates relative movement of the upper jaw and the lower jaw of an infant, and sucked milk drops from the plug to the milk channel below.