CN102657902A - A milk collection device simulating the way a baby sucks milk - Google Patents

Abstract

The invention discloses a milk collecting device for simulating a milk sucking mode of a baby, which comprises: the device comprises a first negative pressure source, a second negative pressure source, a throttling and pressure-releasing hole, an electromagnetic pressure-releasing valve, a first pipeline, a second pipeline, a breast pump cover and a control circuit board; the first negative pressure source is connected with the breast pump through a first pipeline, a throttling pressure relief hole arranged on the first pipeline is communicated with the atmosphere, and when the first negative pressure source is closed, the negative pressure of the first pipeline and the breast pump slowly disappears through the throttling pressure relief hole; the second negative pressure source is connected with the breast pump through a second pipeline, an electromagnetic pressure release valve arranged on the second pipeline is communicated with the atmosphere, and when the electromagnetic pressure release valve is started, the negative pressure of the second pipeline and the breast pump can be rapidly eliminated; the control circuit board is connected with and controls the first negative pressure source, the second negative pressure source and the electromagnetic pressure relief valve. The invention has simple and compact structure and strong comfort in use, and can achieve the feeling of actual milk sucking of a baby under the control of the control circuit board, thereby improving the milk yield and having very good effect.

Description

A milk collection device simulating the way a baby sucks milk

Technical field:

The invention relates to the technical field of baby products, in particular to a milk collecting device for simulating a baby's sucking method.

Background technique:

Studies have shown that the mother's feelings have a great influence on milk production. Among them, positive feelings such as feeling that she likes the baby, or thinking of the baby's cuteness, and believing that her own milk is the best for the baby, these can be Aids milk production to make milk flow. Other sensations such as touching or seeing a baby, or hearing a baby cry can also help this reflex.

Therefore, a mother needs to be with her baby all the time so that she can look at him, touch him, and respond to him. This also helps prepare her body to start breastfeeding and helps the milk flow. If the mother is separated from the baby during the second feeding, the milk flow will be reduced.

At present, the milk collection device seen on the market uses a single negative pressure source to continuously suck the nipple intermittently. Although the milk can be sucked out, it is completely different from the actual baby’s breastfeeding experience. After a long time, the milk secretion will gradually decrease. In order to complete the breastfeeding process as soon as possible, the suction power is often adjusted too high, causing pain and discomfort during use.

U.S. Patent No. 6,706,012B2 discloses a breast-collecting device with dual air pressure sources (the part of the breast shield). Although it has the function of massaging and stimulating lactation, its massage function is only aimed at the breast, and the nipple is deliberately avoided to make it suck. There is also a gap between the feeling of milk and the feeling of actual baby sucking. In addition, it uses a single air pump as the source of air pressure, which makes the dual air pressure sources on the breast shield quite interlinked, thus further limiting the variability of its breast shield control, making it impossible to closely simulate the actual feeling of breastfeeding by a baby. In addition, in order to supply dual air pressure sources, the specifications of the single air pump must match one of the air pressure sources with a larger flow demand, which will cause waste for the other air pressure source and cause its volume to be further reduced.

Another U.S. Patent No. 7,396,340B2 discloses a milk collection device with multiple air pressure sources (breast shield part). Although it may be quite close to simulating the actual baby's breastfeeding, its structure is quite complicated and expensive, and it is not common Products that can be mass-produced.

Invention content:

The object of the present invention is to provide a breast-collecting device for simulating a baby's breast-feeding method in view of the deficiencies in the prior art, which has the characteristics of simple and compact structure, high breast-feeding efficiency and good comfort.

In order to achieve the above object, the milk collection device of the present invention that simulates the baby sucking method includes: a first negative pressure source, a second negative pressure source, a throttling pressure relief hole, an electromagnetic pressure relief valve, a first pipeline, a second pipeline , a breast shield, and a control circuit board; wherein, the first negative pressure source is connected to the breast shield through a first pipeline, and the throttling pressure relief hole arranged on the first pipeline communicates with the atmosphere. When the first negative pressure source is closed, The negative pressure between the first pipeline and the breast shield disappears slowly through the throttling pressure relief hole; the second negative pressure source is connected to the breast shield through the second pipeline, and the electromagnetic pressure relief valve installed on the second pipeline communicates with the atmosphere. When the pressure valve is activated, the negative pressure of the second pipeline and the breast shield can be quickly eliminated; the control circuit board is connected to and controls the first negative pressure source, the second negative pressure source, and the electromagnetic pressure relief valve.

As a preference of the above technical solution, a negative pressure storage container and an electromagnetic control valve are arranged between the first negative pressure source and the first pipeline, and the electromagnetic control valve is controlled by a control circuit board.

As a preference of the above technical solution, the first negative pressure source and the second negative pressure source are pump bodies driven by the same motor.

As a preference of the above technical solution, the breast shield is composed of a cover body, an inner liner, and a milk collection container. The soft elastic body between the inner side and the breast, the outer side of the inner liner and the inner side of the breast receiving part form a second air chamber, the inner side of the inner liner contacts the breast and forms the first air chamber, and the cover is additionally provided with a first channel and a second channel , the first passage connects the first air chamber and the milk container, and additionally connects the first negative pressure source through the first pipeline, and the second passage connects the second negative pressure source with the second air chamber through the second pipeline.

As a preference for the above technical solution, the inner lining includes three parts: a breast buffer section, a lip simulation section, and a tongue simulation section, wherein the breast buffer section is used to increase the comfort of the breast contact, and the funnel-shaped inner lining The root part is a simulated section of lips that is sunken toward the central line, and behind this section is connected a simulated section of tongue that bulges toward the outside of the circumference.

As a preference for the above technical solution, the control circuit board controls the first negative pressure source, the second negative pressure source, and the electromagnetic pressure relief valve, and its control program is divided into three stages, wherein the first negative pressure source is Stage 1 and stage 3 are closed, stage 2 is open; the second negative pressure source is open in stage 1 and stage 2, and stage 3 is open or closed; the electromagnetic pressure relief valve is closed in stage 1 and stage 2, and stage 3 is open; the time of stage 3 accounts for 40% to 60% of the total time of all stages, and the time of stage 2 is between 0.08 and 0.25 seconds.

As a preference of the above technical solution, the control circuit board controls the first negative pressure source, the electromagnetic control valve, the second negative pressure source, and the electromagnetic pressure relief valve, and its control program is divided into three stages, wherein the first negative pressure The pressure source is turned on in stages 1 and 3, and turned on or off in stage 2; the electromagnetic control valve is turned off in stages 1 and 3, and turned on in stage 2; the second negative pressure source is turned on in stages 1 and 2, and turned on or off in stage 3; The electromagnetic pressure relief valve is closed in stages 1 and 2, and opened in stage 3; the time of stage 3 accounts for 40% to 60% of the total time of all stages, and the time of stage 2 is between 0.08 and 0.25 seconds.

The beneficial effects of the present invention are: the structure is simple and compact, and the comfort is strong during use. Under the control of the control circuit board, the cooperation of various components can achieve the feeling like a baby actually sucking milk, thereby increasing the milk production, and the effect is very good.

Description of drawings:

Below in conjunction with accompanying drawing, the present invention will be further described:

Fig. 1 is the structural representation of the first embodiment of the present invention;

Figure 2 is a front view of a breastshield;

Fig. 3 is the A-A sectional view of the breast shield;

Fig. 4 is an exploded view of a breast shield;

Fig. 5 is an A-A sectional view of a breast shield when the negative pressure of the second air chamber is greater than that of the first air chamber;

Fig. 6 is an A-A sectional view of a breast shield when the negative pressure of the first air chamber is greater than the negative pressure of the second air chamber;

Fig. 7 is a negative pressure and time waveform diagram of the first air chamber and the second air chamber;

8 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a third embodiment of the present invention.

Description of main component symbols in the figure

01-breast 011-nipple 0111-side of nipple 0112-front of nipple

10-First negative pressure source 11-First negative pressure source drive motor 11A-Negative pressure source drive motor

12-Throttling pressure relief hole of the first negative pressure source 13-First pipeline 14-Negative pressure storage container

15-Solenoid control valve 20-Second negative pressure source 21-Second negative pressure source drive motor

22-Electromagnetic pressure relief valve 23-Second pipe 30-Breast shield 31-Shield

311-Breast receiving part 312-Inside of breast receiving part 313-First channel

314-Second Channel 32-Inner Lining 321-Outer Lining 322-Inner Lining

323-breast buffer section 3231-buffer cylinder 324-lip simulation section

325-Tongue simulation section 326-Inner liner end 33-Milk collection container

34-First air chamber 35-Second air chamber 37-One-way valve

38-Liner support 40-Control circuit board 51-Positive pressure difference time point

52- Negative pressure difference time point

Detailed ways:

According to the baby sucking research and ultrasound photography, the baby's sucking action mainly relies on the negative pressure generated by the change of oral cavity volume to suck out the breast milk. However, in order to truly simulate the sucking action of the baby's mouth, for example, the traditional milk collection device can never be achieved by a single negative pressure source. It must be combined with the simulation of the baby's oral peristalsis, so that the mother's nipples will feel like a baby sucking .

In order to achieve this goal, the present invention simplifies the peristalsis of the baby's oral cavity into two major actions: 1. The opening and closing of the mouth. Studies have shown that the baby increases the oral space through the lower jaw to generate suction, so through the continuous opening and closing of the mouth Causes intermittent suction. 2. Swallowing, the tongue moves like waves to bring milk into the esophagus.

The baby's complete sucking action is a continuous and alternating movement of opening and closing the mouth and swallowing. When the mouth is opened, a vacuum negative pressure is generated in the oral cavity. When the vacuum negative pressure reaches the maximum, the mouth is closed and swallowed at the same time. In order to produce the above-mentioned baby's oral cavity peristalsis and sucking action, one of the embodiments of the present invention is shown in Figure 1; Valve 22 , first conduit 13 , second conduit 23 , breastshield 30 , and control circuit board 40 . Wherein, the first negative pressure source 10 is driven by the first negative pressure source driving motor 11 and connected with the breast shield 30 through the first pipeline 13, and a throttling pressure relief hole 12 is arranged on the first pipeline 13 to communicate with the atmosphere. When the negative pressure source 10 is closed, the negative pressure of the first pipeline 13 and the breast shield 30 can slowly disappear through the throttling pressure relief hole 12, and the second negative pressure source 20 is driven by the second negative pressure source drive motor 21 and is driven by the second pipeline. 23 is connected with the breast shield 30, and an electromagnetic pressure relief valve 22 is arranged on the second pipeline 23 to communicate with the atmosphere. The pressure can be quickly eliminated; the first negative pressure source drive motor 11 , the second negative pressure source drive motor 21 , and the electromagnetic pressure relief valve 22 are controlled by the control circuit board 40 .

As shown in Figures 2 to 4, the breast shield 30 is composed of a shield body 31, a lining 32, and a milk collection container 33. The front end of the shield body 31 is a funnel-shaped breast receiving portion 311 for receiving the breast 01; the lining 32 is a soft elastic body arranged between the inner side 312 of the breast receiving part and the breast 01, and a sealing ring is arranged at the inner substrate end 326 to be attached to the cover body 31, so that the outer side 321 of the lining and the inner side 312 of the breast receiving part form a second The air chamber 35, the lining inner side 322 is in contact with the breast 01 to form the first air chamber 34, and the cover body 31 is further provided with a first channel 313 and a second channel 314, wherein the first channel 313 is connected to the first air chamber 34 and the collector. The milk container 33 is connected to the first negative pressure source 10 through the first pipeline 13; the second passage 314 connects the second negative pressure source 20 to the second air chamber 35 through the second pipeline 23.

In order to improve the efficiency of the negative pressure establishment of the first negative pressure source 10, a one-way valve 37 can also be selectively arranged between the first passage 313 and the milk container 33, so that the required pressure of the first negative pressure source 10 can be effectively reduced. The size of the negative pressure space can be established without affecting the flow of milk into the milk collection container 33 .

The liner 32 that is in direct contact with the breast 01 includes three parts: the breast buffer section 323, the lip simulation section 324, and the tongue simulation section 325; the funnel-shaped part at the front end of the liner 32 is the breast buffer section 323, which is provided with a buffer Cylinder 3231, since the lining 32 is made of soft elastic body, the breast cushioning section 323 can increase the comfort when the breast 01 is in contact; in addition, the funnel-shaped root of the lining 32 is a lip simulation section 324, which is connected to the tongue at the rear Simulation section 325, as shown in Figure 5: when the negative pressure of the second air chamber 35 is greater than the negative pressure of the first air chamber 34, the lip simulation section 324 will approach the breast receiving portion 311, thereby expanding the inner size of the lip simulation section 324 and The feeling of simulating the opening of the oral cavity, see also shown in Figure 6, when the negative pressure of the first air chamber 34 is greater than the negative pressure of the second air chamber 35, the lip simulation section 324 will return to its original size and simulate the mouth when the mouth is closed. Feeling; the tongue simulation section 325 is in the shape of an outward bulge. When the negative pressure of the first air chamber 34 is greater than the negative pressure of the second air chamber 35, the tongue simulation section 325 will be concentrated inwards and then attached to the nipple 011, because The scope of the tongue simulation section 325 can completely cover the nipple 011. When it is concentrated inward, it will first attach to the side of the nipple 0111 and then wrap to the front end of the nipple 0112, thereby creating the sensation of oral swallowing and peristalsis.

In order to facilitate the installation and removal of the lining 32, and further help the airtightness of the first air chamber 34 and the second air chamber 35, a lining bracket 38 can be selectively added to fix the lining 32, and avoid installation and removal Breast milk can be infected by contact with places where breast milk will come into contact with.

The complete breast pumping action is a continuous and alternating action of opening the mouth and swallowing. Observing the baby sucking milk, the oral ultrasound photography can push the baby to open the mouth and at the same time the internal space of the oral cavity becomes larger, so that a vacuum negative pressure is generated inside the oral cavity. When the vacuum negative pressure reaches the maximum , close the mouth and swallow at the same time, so the negative pressure control action sequence of the first air chamber 34 and the second air chamber 35 is as follows:

1. The negative pressure of the second air chamber 35 is established (mouth opening);

2. The negative pressure of the first air chamber 34 is established (vacuum negative pressure is generated in the oral cavity);

3. The first air chamber 34 and the second air chamber 35 reach the maximum negative pressure at the same time (the vacuum negative pressure reaches the maximum);

4. The negative pressure in the second air chamber 35 disappears (close your mouth and swallow);

5. The negative pressure of the first air chamber 34 decreases (the vacuum negative pressure in the oral cavity disappears);

Wherein, the negative pressure of the second air chamber 35 is established earlier than the negative pressure of the first air chamber 34, but because the negative pressure of the first air chamber 34 must be greater than the negative pressure of the second air chamber 35 when simulating swallowing action, so The establishment speed of the negative pressure of the first air chamber 34 needs to be greater than that of the second air chamber 35; The speed is faster than the first air chamber 34. In other words, the suction flow rate of the first negative pressure source 10 must be greater than that of the second negative pressure source 20 , but the pressure release flow rate of the first negative pressure source 10 must be smaller than that of the second negative pressure source 20 . Please refer to FIG. 7 for the change of the negative pressure of each air chamber mentioned above with time. Wherein, the variation of the pressure difference can basically represent the action of the lip simulation section 324 and the tongue simulation section 325 in the lining 32, as shown in the time point 51 in the figure, the positive value of the pressure difference PdP represents that the negative pressure P2P of the second air chamber 35 is greater than The negative pressure P1P of the first air chamber 34 is the mouth opening state; at the time point 52 in the figure, the pressure difference PdN is a negative value, which means that the negative pressure P2N of the second air chamber 35 is smaller than the negative pressure P1N of the first air chamber 34, This is the state of mouth closing and swallowing.

In order to achieve the above-mentioned control method, the first negative pressure source 10 and the second negative pressure source 20 must be vacuum pumps with different flow rates and driven by different motors respectively. According to actual experiments, in order to achieve better results, the first negative pressure source The flow rate of the pressure source 10 must be more than 5 times the flow rate of the second negative pressure source 20. This ratio will vary slightly according to the space ratio of the first air chamber 34 and the second air chamber 35, and in order to achieve an effective breastfeeding frequency ( 45 ~ 110Cycle/Min), the flow rate of the first negative pressure source 10 must reach more than 9L/Min, the following is an example of the control sequence of breastfeeding frequency 50Cycle/Min, but the proportion of time in each stage must be in accordance with the first air chamber 34 The size and proportion of the second air chamber 35 are slightly adjusted to achieve the best results; the total time of stage 1, stage 2, and stage 3 is a cycle (cycle) total time, and the length of the total cycle time determines breastfeeding The speed of the frequency, the time of stage 3 should account for 40% to 60% of the total time of the entire cycle, and the time of stage 2 should be between 0.08 and 0.25 seconds.

However, the cost and volume of the high-flow first negative pressure source 10 required in this embodiment are relatively large, and two motors must be used to drive each negative pressure source separately, which is not ideal in terms of cost and product volume. Another preferred embodiment of the present invention is shown in FIG. 8 . It includes a first negative pressure source 10, a second negative pressure source 20, a negative pressure storage container 14, an electromagnetic control valve 15, a throttle pressure relief hole 12, an electromagnetic pressure relief valve 22, a first pipeline 13, a second pipeline 23, the breast shield 30, and the control circuit board 40.

Wherein, the first negative pressure source 10 is driven by the driving motor 11A and connected to the negative pressure storage container 14, and the driving motor 11A runs full time (or nearly full time) to provide sufficient negative pressure in the negative pressure storage container 14, and the negative pressure The other outlet of the pressure storage container 14 is provided with an electromagnetic control valve 15 and is connected to the breast shield 30 through the first pipeline 13. The first pipeline 13 is provided with a throttling pressure relief hole 12 to communicate with the atmosphere. When the electromagnetic control valve 15 is activated , the negative pressure storage container 14 is connected with the first pipeline to quickly establish the negative pressure of the first pipeline 13 and the first air chamber 34 in the breast shield 30, when the electromagnetic control valve 15 is closed, the negative pressure storage container 14 is connected with the first pipeline. A pipeline 13 is blocked, and the negative pressure between the first pipeline 13 and the breast shield 30 can slowly disappear through the throttling pressure relief hole 12; the second negative pressure source 20 is also driven by the drive motor 11A and connected to the breast shield 30 through the second pipeline 23 The second pipeline 23 is provided with an electromagnetic pressure relief valve 22 to communicate with the atmosphere. When the electromagnetic pressure relief valve 22 is activated, the second pipeline 23 is communicated with the atmosphere, and the second pipeline 23 is connected to the negative air chamber 35 of the second air chamber 35 in the breast shield 30. The pressure can be quickly eliminated; the driving motor 11A, the electromagnetic control valve 15 and the electromagnetic pressure relief valve 22 are controlled by the control circuit board 40 .

This embodiment can produce the same effect as the previous embodiment, but it only needs to use a single motor to drive two vacuum pump bodies of the same specification as the negative pressure source, and the vacuum pump body can be a low-flow vacuum pump (such as flow rate<3L/Min) , so the size and cost can be greatly reduced. Actual experiments have confirmed that the negative pressure source can achieve the same effect by using a vacuum pump with a flow rate of 3L/Min. At this time, the control sequence of breastfeeding frequency 50Cycle/Min is as follows:

stage 1 2 3 time 0s～0.5s 0.5s～0.6s 0.6s～1.2s Drive motor (11A) ON ON or OFF ON Solenoid control valve(15) OFF ON OFF Electromagnetic pressure relief valve (22) OFF OFF ON

In practice, two independent vacuum pumps can also be used instead of a vacuum pump driven by a single motor, and the next best embodiment is shown in Figure 9, which includes a first negative pressure source 10, a second negative pressure source 20, and a negative pressure storage container. 14. Electromagnetic control valve 15, throttle pressure relief hole 12, electromagnetic pressure relief valve 22, first pipeline 13, second pipeline 23, breast shield 30, and control circuit board 40

Wherein, the first negative pressure source 10 is driven by the first negative pressure source drive motor 11 and connected to the negative pressure storage container 14, and the first negative pressure source drives the motor 11 to run full time (or nearly full time) to provide negative pressure storage. Sufficient negative pressure in the pressure container 14, the other outlet of the negative pressure storage container 14 is provided with an electromagnetic control valve 15 and connected with the breast shield 30 through the first pipeline 13, and a throttling pressure relief hole 12 is arranged on the first pipeline 13 Connected to the atmosphere, when the electromagnetic control valve 15 is activated, the negative pressure storage container 14 is connected to the first pipeline 13 to quickly establish the negative pressure of the first pipeline 13 and the first air chamber 34 in the breast shield 30, when the electromagnetic control valve When 15 is closed, the negative pressure storage container 14 is blocked from the first pipeline, and the negative pressure of the first pipeline 13 and the first air chamber 34 in the breast shield 30 can slowly disappear through the throttling pressure relief hole 12; the second negative pressure source 20 Driven by the second negative pressure source drive motor 21 and connected to the breast shield 30 through the second pipeline 23, an electromagnetic pressure relief valve 22 is arranged on the second pipeline 23 to connect with the atmosphere. When the electromagnetic pressure relief valve 22 is activated, the second pipeline 23 is connected to the atmosphere, and the negative pressure of the second pipeline 23 and the second air chamber 35 in the breast shield 30 can be quickly eliminated; the first negative pressure source drives the motor 11, the second negative pressure source drives the motor 21, and the electromagnetic control valve 15 has The electromagnetic relief valve 22 is controlled by the control circuit board 40 .

The effect that this embodiment can produce is the same as other embodiments, but can use two low-flow vacuum pumps (such as flow rate＜3L/Min) as negative pressure source, and cost and volume can be lower than first embodiment, although cost and volume Slightly larger than the second embodiment, but because the two negative pressure sources are driven by individual motors, the first negative pressure source 10 and the second negative pressure source 20 have no linkage, which can control the actions of each part of the lining 32 more flexibly and accurately . According to actual experiments, both negative pressure sources can use a vacuum pump with a flow rate of 3L/Min to achieve the same effect. At this time, the control sequence of breastfeeding frequency 50Cycle/Min is as follows:

The above descriptions are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention. All equivalent changes and modifications made according to the present invention belong to the patent scope covered by the present invention.

Claims (7)

1. simulate the milk collector that the baby inhales newborn mode for one kind, it is characterized in that including: first negative pressure source, second negative pressure source, throttling relief hole, electromagnetic relief valve, first pipeline, second pipeline, humalacter and control circuit board; Wherein, first negative pressure source is connected with humalacter through first pipeline, is arranged at throttling relief hole and atmosphere on first pipeline, and when first negative pressure source was closed, the negative pressure of first pipeline and humalacter slowly disappeared through the throttling relief hole; Second negative pressure source is connected with humalacter through second pipeline, is arranged at electromagnetic relief valve and atmosphere on second pipeline, and when electromagnetic relief valve started, the negative pressure of second pipeline and humalacter can be eliminated rapidly; The control circuit board connection is also controlled first negative pressure source, second negative pressure source and electromagnetic relief valve.

2. require 1 described simulation baby to inhale the milk collector of newborn mode according to power, it is characterized in that: a negative pressure pressurised container and a solenoid electric valve is set between described first negative pressure source and first pipeline, and solenoid electric valve is controlled by control circuit board.

3. require 2 described simulation babies to inhale the milk collector of newborn mode according to power, it is characterized in that: described first negative pressure source and second negative pressure source the pump housing for driving by same motor.

4. require according to power that each described simulation baby inhales the milk collector of newborn mode in 1 to 3; It is characterized in that: described humalacter is by cover body, liner and collect newborn container and form; The front end of cover body is the funnel-form breast carrier that is used to accept breast; Liner is the soft elastomer that is arranged between breast carrier inboard and the breast, the liner outside and inboard second air chamber that forms of breast carrier, and the liner inboard contacts and forms first air chamber with breast; Cover body is provided with first passage and second channel in addition; First passage connects first air chamber and the newborn container of collection, and connects first negative pressure source through first pipeline in addition, and second channel is connected second negative pressure source through second pipeline with second air chamber.

5. require 4 described simulation babies to inhale the milk collector of newborn mode according to power; It is characterized in that: described liner comprises three parts: breast breeze way, lip analog section and tongue analog section; Wherein, Comfortableness when the breast breeze way is used to increase the breast contact, the funnelform root of liner are to concentrate recessed lip analog section to centrage, and this section rear connects the tongue analog section to the periphery protuberance.

6. simulation baby according to claim 1 inhales the milk collector of newborn mode; It is characterized in that: described control circuit board is controlled first negative pressure source, second negative pressure source and electromagnetic relief valve; Its control sequence is divided into three phases; Wherein, first negative pressure source was closed in stage 1 and stage 3, and the stage 2 opens; Second negative pressure source was opened in stage 1 and stage 2, and the stage 3 opens or closes; Electromagnetic relief valve was closed in stage 1 and stage 2, and the stage 3 opens; The time in stage 3 accounts for 40%～60% of all stage temporal summations, and the time in stage 2 is between 0.08～0.25 second.

7. simulation baby according to claim 2 inhales the milk collector of newborn mode; It is characterized in that: described control circuit board is controlled first negative pressure source, solenoid electric valve, second negative pressure source and electromagnetic relief valve; Its control sequence is divided into three phases; Wherein, first negative pressure source was opened in stage 1 and stage 3, and the stage 2 opens or closes; Solenoid electric valve cut out in stage 1 and stage 3, and the stage 2 opens; Second negative pressure source was opened in stage 1 and stage 2, and the stage 3 opens or closes; Electromagnetic relief valve was closed in stage 1 and stage 2, and the stage 3 opens; The time in stage 3 accounts for 40%～60% of all stage temporal summations, and the time in stage 2 is between 0.08～0.25 second.

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