CN210812921U - Be applied to tee bend extractor and breast pump of breast pump - Google Patents

Abstract

The utility model relates to the field of breast pumps, in particular to a three-way suction device, which comprises a hollow three-way component and a tubular component; the outer wall of the tubular part and the inner wall of the three-way part enclose an accommodating cavity. The utility model provides a tee joint extractor, through set up the tubular part in the tee bend part, form one end confined holding chamber between the outer pipe wall of tubular part and the tee bend part, thus make the women when lying or lying on one side, milk receives the separation of tubular part, thus milk is difficult to flow out the tee joint extractor from the fluid-discharge outlet of tubular part to the oral area direction of intaking milk; therefore, the utility model provides a tee bend extractor has solved among the prior art, and the women lies or when lying on one's side, and the technical problem that the milk in the breast pump of prior art flows from the milk entry easily.

Description

Be applied to tee bend extractor and breast pump of breast pump

Technical Field

The utility model relates to a breast pump field, concretely relates to be applicable to tee bend extractor and breast pump of breast pump that is used for that female recumbent or side recumbent use.

Background

The breast pump is used as an auxiliary tool for breast feeding and can help lactating women to collect milk for feeding infants. The breast pump of the prior art generally comprises a milk extractor for extracting milk, a negative pressure generating device for providing suction, and a collecting container for collecting milk. The breast milk extractor is switched between a positive pressure state and a negative pressure state by the negative pressure device, so that the action of sucking the breast milk by the baby is simulated, and the sucked breast milk is stored in the milk collecting container.

A breast pump in the related art, which can be used only in a state where a woman sits up when actually used; in other words, when a woman lies on his/her back or on his/her side, milk is easily discharged from the milk suction inlet of the breast pump, although the breast pump can perform a function of sucking and storing milk; in this case, the woman needs to maintain an end-seated position for a long time before the breast pump of the prior art can be used; in addition, some women with an uncomfortable physical state cannot maintain an end-seated posture for a long time, so that the women with the uncomfortable physical state cannot use the breast pump in the prior art.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that the milk is easy to flow out of the milk inlet of the breast pump in the prior art when a woman lies on the back or on the side in the prior art, the three-way suction device applied to the breast pump is provided, and comprises a hollow three-way part and a tubular part; the three through holes of the three-way component are respectively a milk inlet part, a negative pressure port part and a milk outlet part; the two pipe orifices of the tubular component are respectively a liquid inlet and a liquid outlet; the tubular component is arranged in the inner cavity of the three-way component; the outer edge of the liquid inlet of the tubular component is tightly attached to the inner wall of the three-way component; the liquid inlet of the tubular component is superposed with the milk inlet part; the tubular part extends into the tee part; and the outer pipe wall of the tubular component and the inner wall of the three-way component enclose an accommodating cavity.

Further, when the milk outlet is positioned at the lower part, the milk inlet part is positioned at the obliquely upper part of the milk outlet part; the side where the milk inlet part is located is the left side, and the side where the milk outlet part is located is the lower side; a gap is formed between the outer wall of the bottom of the tubular component and the inner wall of the three-way component, which is positioned on the left side of the milk outlet portion.

Furthermore, the three-way suction device also comprises a fixing part for fixing the milk storage container; the fixing part is arranged at the milk outlet part.

Further, the three-way suction device also comprises an elastic membrane-shaped component; the membrane-like member is provided inside the three-way member; the membrane-like member covers the negative pressure port of the three-way member;

the negative pressure port portion is isolated from the milk inlet portion and the negative pressure port portion by the film-like member.

Further, the membrane-like member is made of silicone; the membrane-shaped member protrudes from the negative pressure port into the three-way member; the membrane-like member is wavy.

Further, the three-way suction device also comprises a cover-shaped component; the cover-shaped component is provided with a negative pressure hole;

the membrane-like member covers the negative pressure port; the membrane-like member is fixed to the three-way member by the lid-like member.

Further, the tubular part and the three-way part are integrally formed.

Furthermore, the milk inlet part is trumpet-shaped.

Further, the three-way suction device also comprises an adapter for a milk storage container; the adapter comprises a milk inlet connector and a milk outlet connector; the milk inlet connector is communicated with the milk outlet connector; the fixing part is annularly arranged on the three-way component and surrounds the milk outlet part; the annular inner wall of the fixing part is provided with an internal thread; the adapter at the milk inlet connecting port is provided with an external thread matched with the internal thread; the adapter is detachably fixed on the three-way component through the external thread and the internal thread.

Further, the three-way suction device also comprises a duckbill valve; the duckbill valve is made of silica gel; the three-way suction device at the milk outlet part extends downwards to form a milk outlet channel; the duckbill valve sleeve is arranged on the milk outlet channel.

The utility model provides a tee bend extractor, through set up the tubular part in the tee bend part, form one end confined holding chamber between the outer pipe wall of tubular part and the tee bend part, thus make the women when lying or lying on one side, milk is held in the holding chamber, and milk is received the separation of tubular part, thus milk is difficult to flow out the tee bend extractor from the fluid-discharge outlet of tubular part to the oral area direction of intaking milk; therefore, the utility model provides a tee bend extractor has solved among the prior art, and the women lies or when lying on one's side, and the technical problem that the milk in the breast pump of prior art flows from the milk entry easily.

In order to solve prior art, the women when lying or lying on one's side, the technical problem that the milk flows out from the milk entry of the breast pump of prior art easily, the utility model discloses still provide the breast pump that adopts aforementioned three-way extractor, including aforementioned three-way extractor who is applied to the breast pump.

Furthermore, the breast pump also comprises a one-way valve, a milk storage container and a negative pressure device; the one-way valve is arranged at the milk outlet part; the one-way valve can seal the milk outlet part in an opening and closing manner; the milk storage container is detachably fixed at the milk outlet part; the one-way valve extends into the milk storage container; the negative pressure device is communicated with the three-way component through the negative pressure opening part.

The utility model provides a breast pump has tee bend extractor, and this tee bend extractor forms one end confined holding chamber through setting up the tubular part in the tee bend part, between the outer pipe wall of tubular part and the tee bend part, thus make the women when lying or lying on one's side, the milk in the holding chamber receives the separation of tubular part, thus milk is difficult to flow out of tee bend extractor from the fluid-discharge outlet of tubular part to the oral area direction of intaking; therefore, the utility model provides a breast pump has solved among the prior art, and when the women was recumbent or the side lies, the technical problem that the milk in the breast pump of prior art flows out from the milk entry easily.

Drawings

FIG. 1 is a schematic structural view of a breast pump with a three-way suction device according to an embodiment of the present invention;

FIG. 2 is a schematic view of an inclined breast pump with a three-way suction device according to an embodiment of the present invention;

FIG. 3 is a schematic view of a split structure of a breast pump with a three-way suction device according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a breast pump having a negative pressure device and a three-way suction device according to an embodiment of the present invention.

Detailed Description

In order to solve the technical problem that in the prior art, when a woman lies or lies on one side, milk easily flows out from a milk inlet of the breast pump in the prior art, the utility model provides a three-way suction device.

Referring to fig. 1 or fig. 2, the three-way suction device comprises a hollow three-way part 1 and a tubular part 101;

the three through holes of the three-way component 1 are respectively a milk inlet part, a negative pressure port part and a milk outlet part; the two pipe orifices of the tubular component 101 are respectively a liquid inlet and a liquid outlet; the tubular part 101 is arranged in the inner cavity of the three-way part 1; the outer edge of the liquid inlet of the tubular component 101 is tightly attached to the inner wall of the three-way component 1;

the liquid inlet of the tubular part 101 is superposed with the milk inlet part; the tubular part 101 extends into the tee part 1;

the outer pipe wall of the tubular part 101 and the inner wall of the three-way part 1 enclose an accommodating cavity.

Wherein the milk inlet, the negative pressure port and the milk outlet are respectively communicated, thereby forming an internal three-way chamber of the three-way component 1.

Particularly, when the milk outlet is positioned at the lower part, the milk inlet part is positioned at the oblique upper part of the milk outlet part; the side where the milk inlet part is positioned is the left side, and the side where the milk outlet part is positioned is the lower side; a gap is formed between the outer wall of the bottom of the tubular part 101 and the inner wall of the three-way part 1 on the left side of the milk outlet.

At the bottom end of the tubular part 101, a gap is formed between the outer pipe wall of the tubular part 101 at the bottom end and the inner wall of the adjacent three-way part, and the gap is a part of the accommodating cavity; when the female uses the three-way suction device in the sitting posture, the emulsion flows into the inner cavity of the three-way component 1 from the liquid outlet of the tubular component 101; if the female changes the sitting posture into lying or side lying posture, the three-way suction device changes from the original natural vertical placement into inclined vertical placement; at this time, the milk retained in the three-way member 1 first flows into the gap (i.e., into the accommodating chamber), and the milk is blocked by the outer tube wall of the lowermost end of the tubular member 101, so that the milk is difficult to 'climb over' the outer tube wall of the lowermost end of the tubular member 101, and the milk cannot enter the liquid discharge port; on the contrary, when the woman lies or lies on his side, the milk flowing out of the drainage port flows into the gap (i.e., the accommodation chamber) along the outer tube wall of the bottommost tubular member 101, and then flows out of the accommodation chamber to the milk outlet.

Before the three-way expression apparatus is actually used, it needs to be connected to the milk reservoir 2 for collecting milk, so that the milk can be stored in the milk reservoir 2 after the three-way expression apparatus has expressed the milk.

The milk inlet of the three-way part 1 is a milk inlet, and the milk inlet should be capable of accommodating a woman's nipple, so that the interior of the three-way part 1 at the milk inlet can form a contact seal with the woman's nipple. The negative pressure port of the three-way suction device is connected with an external negative pressure device 3; when the negative pressure device 3 works, the inner cavity of the three-way component 1 has two states of positive pressure and negative pressure, and the inner cavity of the three-way component 1 can be switched between the positive pressure state and the negative pressure state through the negative pressure device 3, so that the action of sucking milk by a baby is simulated. When the inner cavity of the three-way component 1 is in a negative pressure state, milk flows into the inner cavity of the three-way component 1 from the milk inlet part and then flows into the milk storage container 2 for collecting the milk from the inner cavity of the three-way component 1.

The tubular part 101 is arranged in the inner cavity of the three-way part 1, the connection part of the liquid inlet of the tubular part 101 and the milk inlet part forms a sealed state, and the liquid outlet of the tubular part 101 extends from the milk inlet part to the inner direction of the three-way part 1; in addition, an accommodating cavity with one sealed end is formed between the outer pipe wall of the tubular part 101 and the inner wall of the three-way part 1. The milk flows into the lumen of the tubular part 101 from the milk inlet part through the liquid inlet of the tubular part 101 and then flows out from the lumen through the liquid outlet of the tubular part 101; the milk flowing out of the tubular member 101 flows into the three-way chamber of the three-way member 1.

After the three-way suction device is assembled with the milk storage container 2 and the negative pressure device 3, in the process of actually using the three-way suction device by a woman, if the woman is in an end sitting state, the milk inlet part of the three-way suction device is contacted with the breast of the woman; the milk outlet of the three-way suction device is communicated with the milk storage container 2; after a negative pressure opening of the three-way suction device is connected with an external negative pressure device 3, the negative pressure device 3 controls the switching of the inner cavity of the three-way component 1 between a positive pressure state and a negative pressure state; at this moment, the utility model provides a tee bend suction means can be regarded as tee bend suction means among the breast pump among the prior art, and the milk storage container 2 who is connected with this tee bend suction means should be in the state of hanging down naturally. Then, if the female changes from the sitting state to the lying state, the collecting device which is originally in the natural vertical state changes to the inclined state; at the moment, the milk in the inner cavity of the three-way extractor is stored in the accommodating cavity, so that the milk is prevented from flowing out of the three-way extractor from the milk inlet part; in other words, milk is contained in the lumen, which is obstructed by the outer wall of the tubular member 101, making it difficult for milk to flow out of the lumen of the three-way aspirator from the drainage port of the tubular member 101.

The utility model provides a tee bend extractor, through set up tubular part 101 in tee bend part, form one end confined holding chamber between the outer pipe wall of tubular part 101 and the tee bend part to make the women when lying or lying on one side, milk is held in the holding chamber, and milk receives the separation of tubular part 101, thereby milk is difficult to flow out tee bend extractor from the fluid-discharge outlet of tubular part 101 to the oral area direction of intaking; therefore, the utility model provides a tee bend extractor has solved among the prior art, and the women lies or when lying on one's side, and the technical problem that the milk in the breast pump of prior art flows from the milk entry easily.

Further, referring to fig. 1 or fig. 2 or fig. 3, the three-way extractor further comprises a fixing portion 104 for fixing the milk container 2; the fixation portion 104 is arranged at the milk outlet portion.

Wherein, the three-way suction device can be connected with the external milk storage container 2 through the fixing part 104. When the milk storage container 2 is fixed on the three-way suction device through the fixing part 104, the milk flows into the three-way chamber of the three-way component 1 through the tubular component 101 from the milk inlet part, and then flows into the inner cavity of the milk storage container 2 through the milk outlet part from the three-way chamber.

Further, referring to fig. 1 or fig. 2 or fig. 3, the three-way suction device further comprises an elastic membrane-like member 102;

the membrane-like member 102 is provided inside the three-way member 1; the membrane-like member 102 covers the negative pressure port of the three-way member 1;

the negative pressure port portion is isolated from the milk inlet portion and the negative pressure port portion by the film-like member 102, respectively.

By providing the elastic membrane-like member 102 and covering the negative pressure port of the three-way member 1 with the membrane-like member 102, the milk is blocked by the membrane-like member 102, and the milk can be prevented from flowing out from the negative pressure port. Furthermore, the negative effects of milk flowing into the negative pressure device 3 are also avoided, since milk cannot flow out of the negative pressure port.

And, after the negative pressure port portion is connected to the negative pressure device 3, the lumen between the membrane-like member 102 and the negative pressure port portion forms a first chamber, and the lumen between the membrane-like member 102 and the milk inlet portion and the negative pressure port portion forms a second chamber; when the negative pressure device 3 works, the first chamber is in a positive pressure state, and the second chamber is in a positive pressure state; the first chamber is in a negative pressure state, and the membrane-shaped component 102 deforms, so that the second chamber is changed from a positive pressure state to a negative pressure state; when the membrane-like member 102 is deformed by the negative pressure, the deformed portion of the membrane-like member 102 moves in the direction of the negative pressure port.

Preferably, the membrane-like member 102 is made of silicone; the membrane-shaped component protrudes from the negative pressure opening part to the inside of the three-way component 1; the membrane-like member is wavy.

The membrane-shaped part 102 made of silica gel has low manufacturing cost, and is beneficial to reducing the manufacturing cost of the three-way suction device. The membrane-like member 102 is arranged to protrude into the three-way member 1, so that the membrane-like member 102 has a sufficient space for deformation, and the volume of the three-way aspirator can be preferably reduced. In addition, the range of deformation of the membrane-like member 102 at the deformed position can be preferably expanded by making the membrane-like member 102 wavy.

Further, referring to fig. 1 or fig. 2 or fig. 3, the three-way extractor further comprises a cap-shaped part 103; the cover-shaped component 103 is provided with a negative pressure hole; the film-like member 102 covers the negative pressure port; the membrane-like member 102 is fixed to the three-way member 1 by a lid member 103.

Wherein, the connection between the cap-shaped member 103 and the negative pressure port includes but is not limited to: a threaded connection or a snap connection. In other words, the outer wall of the three-way member 1 at the negative pressure port portion and the cap-shaped member 103 may be connected by a screw structure or a snap structure. In this embodiment, the cap member 103 is preferably connected to the three-way member 1 at the negative pressure port by a snap connection.

And the negative pressure hole on the cover-shaped component 103 is used for connecting with the external negative pressure device 3; when the negative pressure device 3 is connected to the negative pressure hole, the negative pressure device 3 realizes the conversion of the positive pressure state and the negative pressure state of the three-way suction device through the negative pressure hole.

Covering the edge of the membrane-like member 102 on the negative pressure port, and pressing the edge of the membrane-like member 102 on the three-way member 1 through the cap member 103; on the one hand, the membrane-like member 102 can be detachably fixed to the three-way member 1, and on the other hand, the edge of the membrane-like member 102 is pressed by the lid member 103, so that the membrane-like member 102 and the inner cavity of the three-way member 1 form a seal structure. Further, the aforementioned first chamber is formed between the film-like member 102 and the lid-like member 103, and the negative pressure hole of the lid-like member 103 communicates with the first chamber; and the membrane-like member 102 forms the aforementioned second chamber with the milk inlet portion and the negative pressure port portion. After the negative pressure device is connected with an external negative pressure device 3 through a negative pressure hole, the negative pressure device 3 is started; if the air pressure of the first chamber is the same as the air pressure of the second chamber, the membrane-like member 102 is in a zero-position state in which it does not relax and does not contract; if the first chamber is in a negative pressure state, so that the air pressure of the first chamber is smaller than that of the second chamber, the membranous part 102 is in a relaxation state from a zero position state to the direction of a negative pressure opening part, and the air pressure of the second chamber is changed from a positive pressure state to a negative pressure state; if the first chamber is changed from the negative pressure state to the positive pressure state, and the air pressure of the first chamber tends to be equal to the air pressure of the second chamber, the membrane-like member 102, which is originally in the diastolic state, is changed to the contracted state until the membrane-like member 102 returns to the zero position state.

In addition, the cap-like member 103 provided on the three-way aspirator facilitates the exchange of the membrane-like member 102 and the cleaning of the lumen of the three-way aspirator, in addition to the sealing between the membrane-like member 102 and the three-way member 1.

Further, referring to fig. 1 or 2, the tubular member 101 is integrally formed with the three-way member 1.

The tubular part 101 and the three-way part 1 are integrally formed, so that the three-way suction device can be conveniently manufactured, and the manufacturing cost of the three-way suction device can be reduced.

Further, referring to fig. 1, 2 or 3, the milk inlet is trumpet-shaped.

The milk inlet part is arranged in a horn shape, so that on one hand, the opening area and the volume of the milk inlet part can be enlarged; on the other hand, the trumpet-shaped milk inlet part can form a larger contact area with the female breast, so that the milk inlet part can be better in contact sealing with the female breast.

In addition, when the female uses the three-way suction device with the trumpet-shaped milk inlet part, the contact between the female breast and the milk inlet part is more comfortable, so that the female can obtain good experience.

Further, with reference to fig. 1 or 2 or 3, the three-way extractor also comprises an adapter 105 for the milk container 2;

the adapter 105 comprises a milk inlet connector and a milk outlet connector; the milk inlet connector is communicated with the milk outlet connector;

the fixing part 104 is annularly arranged on the three-way component 1, and the fixing part 104 surrounds the milk outlet part; the annular inner wall of the fixing part 104 is provided with an internal thread;

an external thread matched with the internal thread is arranged on the adapter 105 at the milk inlet connecting port;

the adapter 105 is detachably fixed to the three-way member 1 by external and internal threads.

The external thread at the milk inlet connection of the adapter 105 is connected with the internal thread of the fixing part 104 arranged around the milk outlet, and the milk outlet connection of the adapter 105 is connected with the milk storage container 2, so that the milk storage container 2 or the three-way suction device can be conveniently detached or replaced.

It will be appreciated that the milk outlet connection should be provided with an adapter 105 of different specifications in order to accommodate different forms of milk storage containers 2. For example: if the milk storage container 2 is a feeding bottle, an external thread structure can be arranged on the feeding bottle; correspondingly, an internal thread structure may be provided at the milk outlet interface of the adapter 105 for connecting the feeding bottle, so that the feeding bottle is connected with the internal thread structure of the adapter 105 through the external thread structure. For another example: if the milk storage container 2 is a milk bag, a clamping female head can be arranged on the opening of the milk bag; correspondingly, a clamping male head can be arranged on the outer wall of the milk outlet interface of the adapter 105 for connecting the milk bag, so that the milk bag is clamped and connected with the clamping male head of the adapter 105 through the clamping female head. In this embodiment, the adapter 105 is preferably configured to be connected to a feeding bottle.

Further, referring to fig. 1 or fig. 2 or fig. 3, the three-way aspirator further comprises a duckbill valve; the duckbill valve is made of silica gel; the three-way suction device at the milk outlet part extends downwards to form a milk outlet channel; the duckbill valve sleeve is arranged on the milk outlet channel.

Wherein the duckbill valve is one of the one-way valves 201 suitable for use in the breast pump field. The duckbill of the silicone duckbill valve should be arranged in the inner cavity of the milk storage container 2; the other end of the silica gel duckbill valve is sleeved on the milk outlet channel of the three-way suction device corresponding to the duckbill part. When the inner chamber between silica gel duckbill valve to the tee bend extractor is negative pressure state, the duckbill of silica gel duckbill valve is the shrink state for the flat mouth of duckbill is encapsulated situation, and at this moment, the milk in the storage milk container 2 is difficult to flow into the inner chamber of tee bend extractor through silica gel duckbill valve, thereby has avoided the milk in the storage milk container 2 to flow out to the outside of storage milk container 2.

In order to solve the technical problem that the milk is easy to flow out from the milk inlet of the breast pump in the prior art when a woman lies or lies on the side in the prior art, the utility model also provides a breast pump adopting the three-way suction device. Referring to fig. 1 to 4, the breast pump provided by the present invention has the technical effects of the breast pump with the three-way suction device described above and the three-way suction device described above, and therefore, the description thereof is omitted here.

Specifically, referring to fig. 1 or fig. 2 or fig. 3 or fig. 4, the breast pump further includes a one-way valve 201, a milk storage container 2 and a negative pressure device 3;

the one-way valve 201 is arranged at the milk outlet; a sealing milk outlet part which can be opened and closed by the one-way valve 201;

the milk storage container 2 is detachably fixed at the milk outlet part; the one-way valve 201 extends into the milk storage container 2;

the negative pressure device 3 is communicated with the three-way component 1 through a negative pressure opening part.

The check valve 201 has a conducting state and a blocking state. When the breast pump provided by the utility model is actually used, if the one-way valve 201 is in a conducting state, milk can flow in and out of the one-way valve 201 through the milk outlet part in two directions; if the one-way valve 201 is in the blocked state, milk is blocked by the one-way valve 201 when milk flows from the milk outlet to the one-way valve 201, and milk is blocked by the one-way valve 201 when milk outside the three-way member 1 flows into the three-way member 1.

In the foregoing three-way suction device solution, the connection manner and specific use effect of the milk storage container 2 and the three-way suction device have been described, and are not described herein again.

If the one-way valve 201 is in a conducting state, the three-way suction device is communicated with the milk storage container 2 through the one-way valve; if the one-way valve 201 is in the cut-off state, the one-way valve 201 separates the inner cavity of the three-way suction device and the inner cavity of the milk storage container 2 into a mutually isolated state. Therefore, the milk in the milk storage container 2 can be prevented from flowing back into the three-way suction device by setting the milk storage container 2 and the three-way suction device in an intermittent conduction state and an isolation state through the one-way valve 201.

In the case of a three-way aspirator not including the aforementioned membrane-like member 102 and cap-like member 103, the negative pressure means 3 may be connected to the negative pressure port of the three-way member 1 by providing a separate negative pressure connection member.

In the solution of the three-way aspirator comprising the aforementioned membrane-like member 102, but not comprising the aforementioned cap-like member 103, the negative pressure device 3 can be connected to the negative pressure port of the three-way member 1 by providing a separate negative pressure connection member, and the separate negative pressure connection member can press the membrane-like member 102 against the three-way member 1, the aforementioned first chamber being formed between the geographical negative pressure connection member and the membrane-like member 102.

In the embodiment including the membrane-like member 102 and the cap-like member 103, the negative pressure device 3 is connected to the negative pressure hole of the cap-like member 103, and is further connected to the three-way member 1 through the cap-like member 103.

After the negative pressure device 3 is connected with the three-way component 1, the using effect thereof is already expressed in the scheme of the three-way suction device, and the description is omitted here.

By providing the negative pressure device 3, the inner cavity of the three-way component 1 is switched between the positive pressure state and the negative pressure state, so that the one-way valve 201 can be switched between the on state and the off state.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structural changes made by the contents of the specification and the drawings, or the direct or indirect application in other related technical fields, are included in the same way in the protection scope of the present invention.

Claims (12)

1. A three-way suction device applied to a breast pump is characterized by comprising a hollow three-way part and a tubular part;

the three through holes of the three-way component are respectively a milk inlet part, a negative pressure port part and a milk outlet part;

the two pipe orifices of the tubular component are respectively a liquid inlet and a liquid outlet; the tubular component is arranged in the inner cavity of the three-way component; the outer edge of the liquid inlet of the tubular component is tightly attached to the inner wall of the three-way component;

the liquid inlet of the tubular component is superposed with the milk inlet part; the tubular part extends into the tee part;

and the outer pipe wall of the tubular component and the inner wall of the three-way component enclose an accommodating cavity.

2. The three-way extractor for a breast pump according to claim 1, wherein the milk inlet is located obliquely above the milk outlet when the milk outlet is located below;

the side where the milk inlet part is located is the left side, and the side where the milk outlet part is located is the lower side;

a gap is formed between the outer wall of the bottom of the tubular component and the inner wall of the three-way component, which is positioned on the left side of the milk outlet portion.

3. The three-way extractor for a breast pump according to claim 1, further comprising a fixing part for fixing a milk storage container; the fixing part is arranged at the milk outlet part.

4. The three-way extractor for a breast pump of claim 1, further comprising a resilient membrane-like member;

the membrane-like member is provided inside the three-way member; the membrane-like member covers the negative pressure port of the three-way member;

the negative pressure port portion is isolated from the milk inlet portion and the negative pressure port portion by the film-like member.

5. The three-way extractor for a breast pump according to claim 4, wherein the membrane-like member is made of silicone;

the membrane-shaped member protrudes from the negative pressure port into the three-way member;

the membrane-like member is wavy.

6. The three-way extractor for a breast pump of claim 4, further comprising a cap-like member;

the cover-shaped component is provided with a negative pressure hole;

the membrane-like member covers the negative pressure port;

the membrane-like member is fixed to the three-way member by the lid-like member.

7. The three-way extractor for a breast pump according to any of claims 1 to 6, wherein the tubular part is integrally formed with the three-way part.

8. The three-way extractor for a breast pump according to claim 1, wherein the milk inlet is flared.

9. The three-way extractor for a breast pump of claim 3, further comprising an adapter for a milk container;

the adapter comprises a milk inlet connector and a milk outlet connector; the milk inlet connector is communicated with the milk outlet connector;

the fixing part is annularly arranged on the three-way component and surrounds the milk outlet part; the annular inner wall of the fixing part is provided with an internal thread;

the adapter at the milk inlet connecting port is provided with an external thread matched with the internal thread;

the adapter is detachably fixed on the three-way component through the external thread and the internal thread.

10. The three-way extractor for a breast pump of claim 1, further comprising a duckbill valve;

the duckbill valve is made of silica gel;

the three-way suction device at the milk outlet part extends downwards to form a milk outlet channel; the duckbill valve sleeve is arranged on the milk outlet channel.

11. A breast pump comprising a three-way extractor for a breast pump as claimed in any one of claims 1 to 8.

12. The breast pump as set forth in claim 11 wherein the breast pump further comprises a one-way valve, a milk reservoir and a negative pressure device;

the one-way valve is arranged at the milk outlet part; the one-way valve can seal the milk outlet part in an opening and closing manner;

the milk storage container is detachably fixed at the milk outlet part; the one-way valve extends into the milk storage container;

the negative pressure device is communicated with the three-way component through the negative pressure opening part.

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