CN211824930U - Negative pressure testing assembly of breast pump - Google Patents
Negative pressure testing assembly of breast pump Download PDFInfo
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- CN211824930U CN211824930U CN201922497585.3U CN201922497585U CN211824930U CN 211824930 U CN211824930 U CN 211824930U CN 201922497585 U CN201922497585 U CN 201922497585U CN 211824930 U CN211824930 U CN 211824930U
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Abstract
The utility model discloses a breast pump negative pressure test assembly, include: the negative pressure pump is communicated with the air suction nozzle through a negative pressure pipeline and is suitable for providing negative pressure in the feeding bottle; the end part of the detection rod is abutted against and seals the suction nozzle, and a detection channel is arranged in the detection rod and communicated with the suction nozzle; the detector is communicated with the detection channel and is suitable for detecting the negative pressure value in the feeding bottle. According to the utility model discloses breast pump negative pressure test assembly has following beneficial effect at least: negative pressure is formed in the feeding bottle by the negative pressure pump according to the set negative pressure value, then the suction nozzle is sealed by the detection rod, the actual negative pressure value in the feeding bottle is measured by the detector, and the set negative pressure value and the actual negative pressure value are compared to judge the sealing performance of the feeding bottle, so that the detection is rapid and stable, and the operation is simple.
Description
Technical Field
The utility model relates to a product test field, in particular to breast pump negative pressure test assembly.
Background
The milk sucking machine is a better nursing auxiliary product in the market at present, the product is provided with a pumping pump and a milk bottle, the principle is that the pumping pump is used for pumping air at a pumping nozzle of the product to manufacture negative pressure in the milk bottle, and the milk is sucked from a human body through the suction nozzle by utilizing the negative pressure, the appearance of the product changes the traditional nursing mode, the mammary gland can be dredged, the milk is easier to discharge, the milk output is increased, the milk can be stored by depending on the milk bottle on the product, so that the situation that the baby generates quick milk sucking and chocks to cause milk sucking or only can eat front milk during each milk sucking but cannot eat rear milk with rich nutrition is prevented; by storing the milk, the baby can also timely eat the breast milk when needed.
In the process of extracting milk, if the sealing performance of a milk bottle in the existing breast pump product is insufficient, milk cannot be effectively extracted by the sucking capacity of a baby, and the milk bottle has poor performance in both the use aspect of the product and the experience aspect of a user.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a breast pump negative pressure test assembly, easy operation detects stably.
According to the utility model discloses breast pump negative pressure test assembly, include: the negative pressure pump is communicated with the air suction nozzle through a negative pressure pipeline and is suitable for providing negative pressure in the feeding bottle; the end part of the detection rod is abutted against and seals the suction nozzle, and a detection channel is arranged in the detection rod and communicated with the suction nozzle; the detector is communicated with the detection channel and is suitable for detecting the negative pressure value in the feeding bottle.
According to the utility model discloses breast pump negative pressure test assembly has following beneficial effect at least: negative pressure is formed in the feeding bottle by the negative pressure pump according to the set negative pressure value, then the suction nozzle is sealed by the detection rod, the actual negative pressure value in the feeding bottle is measured by the detector, and the set negative pressure value and the actual negative pressure value are compared to judge the sealing performance of the feeding bottle, so that the detection is rapid and stable, and the operation is simple.
According to some embodiments of the utility model, be provided with negative pressure adjusting device on the negative pressure pump, negative pressure adjusting device is suitable for the settlement negative pressure value of control negative pressure pump output.
According to some embodiments of the present invention, the breast pump negative pressure test assembly further comprises a solenoid valve and a first control switch; the electromagnetic valve is arranged on the negative pressure pipeline and is suitable for switching on and switching off the negative pressure pipeline; the first control switch is in signal connection with the electromagnetic valve and is suitable for controlling the opening and closing of the electromagnetic valve.
According to some embodiments of the utility model, first control switch includes foot switch and the sensor that targets in place, and the sensor setting that targets in place is suitable for and detects the foot switch motion and targets in place on foot switch's motion stroke, sensor signal connection solenoid valve targets in place.
According to some embodiments of the utility model, the tip that detects the stick is the toper and the cover is equipped with the sealing washer.
According to some embodiments of the utility model, the detector includes differential pressure sensor, and differential pressure sensor is suitable for the negative pressure value in the response feeding bottle.
According to the utility model discloses a some embodiments, the detector includes measuring instrument, is suitable for to show the negative pressure value of surveying.
According to some embodiments of the present invention, the breast pump negative pressure test assembly further comprises a negative pressure value determination module and an indicator light; the negative pressure value judging module is in signal connection with the detector and is suitable for comparing the actual negative pressure value with the set negative pressure value; the indicator light is in signal connection with the negative pressure value judging module and is suitable for displaying a judging result in a light-up mode.
According to some embodiments of the present invention, the breast pump negative pressure test assembly further comprises a fixing mechanism adapted to fix the feeding bottle; the fixing mechanism comprises a fixing seat, and the fixing seat is provided with a concave position corresponding to the feeding bottle and a binding band or a pressing block suitable for fixing the feeding bottle.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of an embodiment of a negative pressure testing assembly for a breast pump;
FIG. 2 is a schematic structural view of a combined embodiment of a feeding bottle and a detection rod;
FIG. 3 is a schematic structural view of a combined embodiment of a feeding bottle and a detection rod;
the vacuum cleaner comprises a breast pump 100, a feeding bottle 110, a suction nozzle 120, a suction nozzle 130, a negative pressure pump 200, a negative pressure pipeline 210, a pressure regulating valve 220, a detection rod 300, a sealing ring 310, a detector 400, an electromagnetic valve 500, a foot switch 600, a negative pressure value judgment module 700, an indicator lamp 800 and a case 900.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of description of the present invention and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An embodiment of the utility model provides a breast pump negative pressure test assembly, refer to fig. 1, include: the negative pressure pump 200 is communicated with the suction nozzle 120 through a negative pressure pipeline 210 and is suitable for providing negative pressure in the feeding bottle 110; a detection rod 300, the end of which is abutted against and seals the suction nozzle 130, and the interior of which is provided with a detection channel and is communicated with the suction nozzle 130; the detecting instrument 400 is communicated with the detecting channel and is suitable for detecting the negative pressure value in the feeding bottle 110.
Referring to fig. 2 and 3, the breast pump 100 may include a feeding bottle 110, the feeding bottle 110 includes a bottle cap and a bottle body connected up and down, the bottom of the bottle cap is in threaded fit with the top of the bottle body, a suction nozzle 120 may be disposed on the top of the bottle cap, a suction nozzle 130 may be disposed on the side of the bottle cap, the breast pump 100 may further include a base, the base is disposed with a groove for accommodating the feeding bottle 110, a suction pump is disposed in the base, and the suction pump may be communicated with the suction nozzle 120 through a rubber tube. Usage of the breast pump 100 product: the knob or button on the surface of the base is operated to turn on the pumping pump, and the negative pressure output quantity of the pumping pump is selected to stably provide the negative pressure environment in the feeding bottle 110 through the rubber tube, so as to suck the milk from the human body through the suction nozzle 130.
The embodiment of the negative pressure testing component of the breast pump mainly detects the sealing property inside the breast bottle in the production process of the breast pump product, thereby providing guarantee for the use of subsequent products.
It should be understood that the test of the sealing performance of the milk bottle is the influence of the self problem of the pressure pump for discharging the milk pump product on the test result, the embodiment uses the negative pressure pump to provide a supply component of the negative pressure environment in the detection of the sealing performance of the milk bottle, and the negative pressure pump is a power component which is universal in the field and can provide the negative pressure in the sealing workpiece.
Referring to fig. 1, the negative pressure line 210 may extend from the negative pressure pump 200 to the solenoid valve 500 in the casing 900, and then to the suction nozzle 120.
Referring to fig. 2 and 3, the detection rod 300 abuts against the position of the suction nozzle 130, seals the suction nozzle 130, and has a detection channel, i.e., an internal pipeline, formed in the detection rod 300, and a detection tube extends from the rear end of the detection rod 300 to a detector 400, so that the negative pressure value in the product of the breast pump 100 is detected by the detector 400, and the detector 400 may be an instrument with an air pressure detection function commonly used in the field.
Negative pressure is formed by the negative pressure pump in the feeding bottle according to the set negative pressure value, then the suction nozzle is sealed through the detection rod, the actual negative pressure value in the feeding bottle is measured through the detector, and the set negative pressure value and the actual negative pressure value are compared to judge the sealing performance of the feeding bottle.
The utility model discloses an in some embodiments, can be provided with negative pressure adjusting device on the negative pressure pump, negative pressure adjusting device is suitable for the settlement negative pressure value of control negative pressure pump output. Referring to fig. 1, the negative pressure regulating device may be a pressure regulating valve 220 disposed on the negative pressure pump 200, the pressure regulating valve may be configured to regulate the negative pressure output by regulating the output power of the negative pressure pump, or may be controlled by regulating the upper limit of the negative pressure output in the negative pressure pump, for example, a one-way air valve is disposed on a negative pressure chamber in the negative pressure pump to control the upper limit of the negative pressure in the negative pressure chamber, and the pressure regulating valve may be a valve structure for regulating air pressure commonly used in the field. The negative pressure adjusting device can adjust and set the negative pressure value according to the test requirements of different products or different test requirements of the same product, and the detection flexibility is improved.
In some embodiments of the present invention, the breast pump negative pressure testing assembly may further include an electromagnetic valve and a first control switch; the electromagnetic valve is arranged on the negative pressure pipeline and is suitable for switching on and switching off the negative pressure pipeline; the first control switch is in signal connection with the electromagnetic valve and is suitable for controlling the opening and closing of the electromagnetic valve. Referring to fig. 1, the solenoid valve 500 and the first control switch are arranged so that an operator can control the opening and the closing of the detection according to requirements, the solenoid valve may be a valve which is commonly used in the field and can open and close a pipeline, the negative pressure pump may also be controlled by another set of switch system, or the negative pressure pump and the solenoid valve may also be controlled to open and close through the first control switch.
The utility model discloses an in some embodiments, first control switch includes foot switch and the sensor that targets in place, and the sensor setting that targets in place is suitable for and detects the foot switch motion and targets in place on foot switch's motion stroke, the sensor signal connection solenoid valve that targets in place. The electromagnetic valve is controlled by the foot switch and the in-place sensor, so that the operation is convenient and the response is fast.
It should be understood that, referring to fig. 1, the foot switch 600 includes two upper and lower plates hinged to each other, the back pre-tightening force of the two plates is achieved by a spring, the limitation of the maximum relative angle of the two plates is achieved by a protruding stop on one of the plates, so that the two plates can be rotatably connected in a relatively small angle in a returnable manner, the relative rotation angle of the two plates is reduced by stepping on the foot, and in the process of gradually reducing the included angle of the two plates, the in-place sensor can sense the in-place position of the upper plate relative to the lower plate by a touch manner or a non-touch manner, so as to send a signal to the solenoid valve 500, and the solenoid valve 500 is opened. Both touch and non-touch in-place sensors are common parts in the field, and the manner of data transmission between the in-place sensor and the solenoid valve 500 is also common in the field.
It should be understood that the signal connection may be an electrical signal connection, i.e. a wire connection, or a general wireless signal connection, and functions to transmit data, and these connection methods are all the methods commonly used in the field.
In some embodiments of the present invention, referring to fig. 2 and 3, the end of the detection rod 300 is tapered and sleeved with a sealing ring 310. At least two sealing rings can be arranged at the end part of the detection rod along the axial direction. The arrangement of the end shape and the sealing ring 310 can further improve the sealing effect of the detection rod 300 on the suction nozzle 130.
In some embodiments of the present invention, the detector may include a differential pressure sensor adapted to sense a negative pressure value in the feeding bottle. A differential pressure sensor is a general component, which measures a difference between two pressures through an inductive membrane, and is generally used for measuring a pressure difference between front and rear ends of a certain device or component. The barometer can also be a measuring instrument commonly used in the field. The negative pressure value is detected through the differential pressure sensor, and the detection is accurate and quick
The utility model discloses an in some embodiments, the detector can include measuring instrument, is suitable for the negative pressure value that shows to survey. The data of the measuring instrument may be measured by a differential pressure sensor. The measuring instrument is suitable for displaying the negative pressure value sensed by the differential pressure sensor, so that an operator can intuitively know detection data.
In some embodiments of the present invention, the breast pump negative pressure testing assembly may further include a negative pressure value determination module and an indicator light; the negative pressure value judging module is in signal connection with the detector and is suitable for comparing the actual negative pressure value with the set negative pressure value; the indicator light is in signal connection with the negative pressure value judging module and is suitable for displaying a judging result in a light-up mode. The negative pressure value judging module can be a PLC module, a data comparison algorithm which is universal in the field can be adopted, a set negative pressure value output by the negative pressure pump is used as a reference, the set negative pressure value can be set in advance, the negative pressure pump can also be enabled to send the data to the PLC module, then the detected actual negative pressure value in the feeding bottle is compared, a fluctuation limit of a gap can be set in the PLC module, and a difference value between the two data exceeds the fluctuation limit, so that a prompt mode of a result can be corresponded.
The prompting mode may specifically be display by the indicator lamp 800, if the test result exceeds the limit, the indicator lamp 800 may light up red, and if the test result does not exceed the limit, the indicator lamp 800 may light up green. Besides the display mode of the indicator light 800 to prompt the result, the display mode can also be realized by other modes such as an alarm mode and the like.
In some embodiments of the present invention, the breast pump negative pressure test assembly may further comprise a fixing mechanism adapted to fix the feeding bottle; the fixing mechanism comprises a fixing seat, and the fixing seat is provided with a concave position corresponding to the feeding bottle and a binding band or a pressing block suitable for fixing the feeding bottle. The concave position on the fixing seat can correspond to the shape of the side part of the feeding bottle, the feeding bottle can be laterally placed in the concave position, the base can be placed beside the fixing seat, one end of the binding band can be fixed on the fixing seat, the other end of the binding band can be detachably connected with the fixing seat in a bonding mode, a screw penetrating mode and the like, and the binding band can have elasticity; the briquetting can drive the top of the feeding bottle of butt side-placing through the cylinder, and the briquetting bottom can set up the buffering elastic layer. The feeding bottle can be well fixed through the fixing mechanism, and the feeding bottle and the detection rod are not easy to move relatively in the testing process, so that air leakage is caused.
In some embodiments of the present invention, the breast pump negative pressure test assembly further comprises a driving device, a clamping device and a second control switch, wherein the clamping device is suitable for fixing the detection rod, and the driving device is suitable for driving the clamping device to move linearly; the second control switch is in signal connection with the driving device and is suitable for controlling the opening and closing of the driving device. Clamping device and drive arrangement can all set up the side at the fixing base, and drive arrangement can be cylinder or pneumatic cylinder, also can be linear module, and clamping device can be pneumatic clamping jaw, and the one end that two fingers of pneumatic clamping jaw are close is provided with the concave part that is used for the holding to detect the stick, can set up the buffer chip in the concave part. The pneumatic clamping jaw clamps the detection rod, and the cylinder drives the pneumatic clamping jaw to move towards and away from the fixed seat, so that the end part of the detection rod can be in compression joint with the suction nozzle and leave the suction nozzle. The second control switch may be a type that refers to the first control switch, but may be a remote control button type switch. The manpower can be effectively reduced through the arrangement of the driving device and the clamping device, the feeding bottle and the detection rod are not easy to move relatively in the testing process, so that air leakage is caused, and the testing is efficient.
The utility model discloses breast pump negative pressure test assembly can correspond breast pump negative pressure test method, refer to fig. 1, include: a conduction step, in which the test stick is abutted against and seals the suction nozzle 130, the detector 400 is communicated with the inside of the feeding bottle 110 through the detection channel, the suction nozzle 120 is communicated through the negative pressure pipeline 210, and the negative pressure pump 200 is communicated with the inside of the feeding bottle 110; and a suction detection step of starting the negative pressure pump 200 to set a negative pressure value to form a negative pressure in the feeding bottle 110, measuring an actual negative pressure value in the feeding bottle 110 by using the detector 400, and comparing the set negative pressure value with the actual negative pressure value to obtain a test result.
In the air extraction detection step, a negative pressure adjusting device can be used for adjusting the set negative pressure value output by the negative pressure pump. In the air exhaust detection step, the on-off of the negative pressure pipeline can be controlled by using an electromagnetic valve, and the opening and closing of the electromagnetic valve can be controlled by using a first control switch. The first control switch can comprise a foot switch and an in-place sensor, the foot switch is stepped to a position which can be detected by the in-place sensor, the in-place sensor transmits a detection signal to the electromagnetic valve, and the electromagnetic valve is opened. In the conducting step, the conical end part of the detection rod can be abutted against the suction nozzle, and the suction nozzle is sealed by a sealing ring sleeved on the end part of the detection rod. In the step of air suction detection, the detector may include a differential pressure sensor, and the actual negative pressure value in the feeding bottle is measured by the differential pressure sensor. In the air extraction detection step, the measured actual negative pressure value can be displayed by using a measuring instrument. In the air extraction detection step, the negative pressure value judgment module can be used for comparing the actual negative pressure value with the set negative pressure value, judging whether the difference between the actual negative pressure value and the set negative pressure value is within the set fluctuation range, and the indicator lamp displays the judgment result in a lamp-on mode. In the conducting step, the feeding bottle can be fixed by using a fixing mechanism; the fixing mechanism comprises a fixing seat, the feeding bottle is placed in a concave position on the fixing seat, and the feeding bottle is tightly bound by a binding band or pressed by a pressing block on the fixing seat. In the conducting step, the detection rod can be fixed by the clamping device, the driving device is used for driving the clamping device to do linear motion, and the second control switch is used for controlling the driving device to be opened and closed.
The negative pressure testing method of the breast pump aims at detecting the sealing performance of the feeding bottle, after the testing is completed, the finished breast pump product can also be subjected to fatigue testing of the breast pump, the testing is to carry out fatigue testing on the whole breast pump product comprising the base and the feeding bottle, and the purpose is to check whether the product is qualified or not when the product is continuously used or discontinuously used, and specifically can be that: the vacuum pump is used for pumping air by opening the self-contained pressure pumping pump of the base of the breast pump product, so that the working process of a product can be simulated, negative pressure value data in the feeding bottle can be recorded through the barometer and the paperless recorder, the pressure is pumped in a repeated cycle, the real-time negative pressure value is displayed through the barometer, and the negative pressure value curve in a period of time is displayed through the paperless recorder and the data can be stored.
The mode that barometer and paperless record appearance detected the interior negative pressure value of feeding bottle also can be accomplished through the mode of detecting the sealed suction nozzle of stick, through the tip butt with detecting the stick and sealed suction nozzle, the barometer can be through negative pressure pipe intercommunication detection channel, detection channel can be the interior pipeline of seting up in detecting the stick, the barometer switches on promptly with in the feeding bottle, can real-time detection the vacuum in the feeding bottle through the barometer, paperless record appearance then can be corresponding in certain period of time record set interval the vacuum that the barometer detected down, and can form the curve, paperless record appearance can save data on the one hand, the other party can carry out the digital display through its own display.
The breast pump product can be bled through the pump in the base, through the suction nozzle at silicon rubber pipe intercommunication feeding bottle top for the pump can be followed and is taken out gas formation negative pressure in the feeding bottle, can set up the pressure regulating knob that is used for adjusting the negative pressure value in the feeding bottle on the base, specifically can adjust the output of pump and realize, can also set up the battery in the base and charge the mouth.
The paperless recorder is a general part, and can record data at intervals of 0.1s to form an output curve, and can also continuously store the data for a long time, which can be about 32 days.
In the description herein, references to the description of the term "some embodiments" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. Breast pump negative pressure test subassembly, its characterized in that includes:
the negative pressure pump is communicated with the air suction nozzle through a negative pressure pipeline and is suitable for providing negative pressure in the feeding bottle;
the end part of the detection rod is abutted against and seals the suction nozzle, and a detection channel is formed in the detection rod and communicated with the suction nozzle;
and the detector is communicated with the detection channel and is suitable for detecting the negative pressure value in the feeding bottle.
2. The breast pump negative pressure test assembly as set forth in claim 1, wherein the negative pressure pump is provided with a negative pressure adjusting device adapted to control a set negative pressure value output by the negative pressure pump.
3. The breast pump negative pressure test assembly of claim 1 further comprising a solenoid valve and a first control switch; the electromagnetic valve is arranged on the negative pressure pipeline and is suitable for switching on and off the negative pressure pipeline; the first control switch is in signal connection with the electromagnetic valve and is suitable for controlling the electromagnetic valve to be opened and closed.
4. The breast pump negative pressure test assembly as set forth in claim 3 wherein the first control switch comprises a foot switch and an in-position sensor disposed on a movement stroke of the foot switch and adapted to detect that the foot switch is moved into position, the in-position sensor being in signal communication with the solenoid valve.
5. The breast pump negative pressure test assembly of claim 1, wherein the end of the detection rod is tapered and sleeved with a sealing ring.
6. The breast pump negative pressure test assembly as set forth in claim 1 wherein the detector comprises a differential pressure sensor adapted to sense a negative pressure value within the bottle.
7. The breast pump negative pressure test assembly as set forth in claim 1 wherein the meter comprises a gauge adapted to display a measured negative pressure value.
8. The breast pump negative pressure test assembly of claim 1, further comprising a negative pressure value determination module and an indicator light; the negative pressure value judging module is in signal connection with the detector and is suitable for comparing an actual negative pressure value with a set negative pressure value; the indicator light is in signal connection with the negative pressure value judging module and is suitable for displaying a judging result in a light-up mode.
9. The breast pump negative pressure test assembly of claim 1 further comprising a securing mechanism adapted to secure the baby bottle; the fixing mechanism comprises a fixing seat, and the fixing seat is provided with a concave position corresponding to the feeding bottle and a binding band or a pressing block suitable for fixing the feeding bottle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922497585.3U CN211824930U (en) | 2019-12-31 | 2019-12-31 | Negative pressure testing assembly of breast pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922497585.3U CN211824930U (en) | 2019-12-31 | 2019-12-31 | Negative pressure testing assembly of breast pump |
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| CN211824930U true CN211824930U (en) | 2020-10-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697417A (en) * | 2020-12-28 | 2021-04-23 | 全鼎电子(苏州)有限公司 | Suction and frequency test system of breast pump |
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2019
- 2019-12-31 CN CN201922497585.3U patent/CN211824930U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697417A (en) * | 2020-12-28 | 2021-04-23 | 全鼎电子(苏州)有限公司 | Suction and frequency test system of breast pump |
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