Passive self-heating material, breast pump shield, breast pump, preheating method and component
By using a self-heating material in the breast shield, the temperature is automatically adjusted to a comfortable range for the human body, solving the safety and comfort issues caused by electric heating devices and improving both safety and comfort.
Patent Information
- Application Number
- CN202511429380.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2025-11-28
AI Technical Summary
Existing breast shields are prone to short circuits due to contact with power sources, and they cannot effectively regulate temperature, affecting user comfort and safety.
It uses self-heating materials, including temperature-sensitive materials and phase change materials, which are activated by contact with the user's breast or liquid, and automatically adjust the temperature to the critical temperature range, thus avoiding the use of electric heating devices.
It improves the safety and comfort of the breast pumping process, avoids short circuits, simplifies the structure, reduces costs, and decreases power consumption.
Smart Images
Figure CN121022104A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of breast pump technology, specifically to a self-heating material, a breast shield, a breast pump, a preheating method, and components. Background Technology
[0002] During lactation, mothers often need to use breast pumps to collect breast milk. As a key component that comes into direct contact with the mother's body, the breast shield of the breast pump directly affects the mother's breastfeeding experience. Most breast pump shields on the market are made of ordinary plastic, which does not have temperature regulation capabilities. To prevent mothers from experiencing discomfort from the cold, some breast pump shields are equipped with electric heating devices to maintain the temperature of the breast pump shield within a comfortable range close to body temperature.
[0003] However, breast pumps come into contact with breast milk, which can cause a short circuit in the electric heating device, thus reducing the safety of the breast pumping process. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this application provides a self-heating material, a breast shield, a breast pump, a preheating method, and components. By using a self-heating material that includes at least one of temperature-sensitive materials and phase change materials, the breast shield containing the self-heating material eliminates the need for additional electric heating devices, thus avoiding the problem of short circuits caused by breast milk and improving the safety of the breast pumping process.
[0005] To address the above problems, the present invention provides the following technical solution: In a first aspect, embodiments of this application provide a self-generating material, which includes at least one of temperature-sensitive materials and phase change materials.
[0006] In some embodiments, the temperature-sensitive material comprises the following components: 70-75 parts by weight of silicone, 18-22 parts by weight of poly(N-isopropylacrylamide), 0.8-1.2 parts by weight of crosslinking agent, 8-10 parts by weight of weathering agent, and 1-1.5 parts by weight of temperature-sensitive synergist.
[0007] In some embodiments, the weathering agent comprises titanium dioxide powder.
[0008] In some embodiments, the temperature-sensitive synergist includes a temperature-sensitive ionic liquid.
[0009] In some embodiments, the temperature-sensitive ionic liquid comprises 1-ethyl-3-methylimidazolium tetrafluoroborate.
[0010] In some embodiments, the crosslinking agent includes a platinum vulcanizing agent.
[0011] In some embodiments, the poly(N-isopropylacrylamide) is uniformly dispersed in the silica gel.
[0012] In this way, the contact area between poly(N-isopropylacrylamide) and the user's breast or liquid can be increased, thereby increasing the activation speed of the self-heating material and the speed at which its temperature approaches the critical temperature.
[0013] In some embodiments, the poly-N-isopropylacrylamide is uniformly dispersed in the silica gel in the form of particles.
[0014] In this way, the probability of poly(N-isopropylacrylamide) agglomerating in silicone during the manufacturing process can be reduced, allowing poly(N-isopropylacrylamide) to be more evenly dispersed in silicone. This avoids the problem of uneven heating of self-heating materials caused by localized accumulation of poly(N-isopropylacrylamide), thereby improving the heating uniformity of self-heating materials.
[0015] In some embodiments, the particle diameter of the poly-N-isopropylacrylamide is between 5 micrometers and 8 micrometers.
[0016] In some embodiments, the phase change material includes a phase change product and a matrix material, wherein the phase change product is uniformly dispersed in the matrix material.
[0017] Secondly, embodiments of this application provide a breast pump shield for conforming to a user's breast, accommodating the user's nipple, and receiving breast milk; the breast pump shield at least partially includes a heating element, the heating element comprising a heat-free material.
[0018] In this way, even without a power source and with the heating element activated, the temperature of the breast pump shield approaches its critical temperature. This eliminates the need for an additional electric heating device, preventing short circuits caused by breast milk and improving safety during breast pumping. Furthermore, it prevents sudden temperature increases or decreases due to contact with breast milk, resulting in a more stable temperature and improved user comfort.
[0019] In some embodiments, the breast shield includes a flange and a breast suction channel, the flange being for conforming to the user's breast and the breast suction channel being for accommodating the user's nipple and receiving milk; The flange and / or the milk suction channel includes the heating element.
[0020] In some embodiments, the heating element is located on the side of the breast shield that directly contacts the user's breast or breast milk.
[0021] This method allows the heating element to be activated at the start of the breast pumping process, shortening the time it takes for the breast shield to reach the critical temperature, improving the comfort of using the breast shield, and eliminating the need for additional activation methods.
[0022] In some embodiments, the breast shield further includes a heat insulation layer adjacent to the heating element.
[0023] In this way, the insulation layer can keep the heat-generating part warm, thereby prolonging the time that the temperature of the breast shield approaches the critical temperature and improving the comfort of using the breast shield.
[0024] In some embodiments, the heat insulation layer is disposed on the side of the heating element away from the user's breast or breast milk.
[0025] In some embodiments, the breast shield further includes a support layer for maintaining the shape of the breast shield, the support layer being adjacent to the heat insulation layer.
[0026] In this way, the support layer can maintain the shape of the breast shield, preserve its elasticity and softness, and thus improve the comfort of using the breast shield.
[0027] Thirdly, embodiments of this application provide a breast pump, which includes a breast shield as described in the second aspect, and further includes a milk storage container and a main unit; the milk storage container is used to store the milk collected by the breast shield; the main unit is used to control the breast pump to perform milk pumping operations.
[0028] In this way, the breast pump does not need to include an additional electric heating device specifically designed for the breast shield, which can avoid the problem of short circuits caused by milk, thereby improving the safety of the milk pumping process.
[0029] In some embodiments, the breast pump further includes an activation component for activating the heating element in the breast shield to generate heat.
[0030] In this way, the heating element can be activated in advance by the activation component when the user is about to start using the breast pump, so that the temperature of the breast shield reaches the critical temperature when the pumping begins, thereby improving the comfort of using the breast pump.
[0031] In some embodiments, the activation component is a barrier layer that at least isolates the non-self-heating material in the heating element from air or water. When the barrier layer is peeled off or damaged, the heating element begins to heat up after coming into contact with at least one of water, air, skin, or breast milk.
[0032] In this way, the heating element can be prevented from heating when it is not necessary to activate it, and it can be easily activated when it is necessary to activate it.
[0033] Fourthly, embodiments of this application provide a breast pumping system, including a breast pump and an activation device as described in the third aspect, wherein when the breast pump is placed in the activation device, the heating element in the breast pump's breast shield is activated.
[0034] Fifthly, embodiments of this application provide a method for preheating a breast pump shield, the method comprising: triggering or activating the heating element of the breast pump shield to heat up.
[0035] In some embodiments, triggering or activating the heating element of the breast shield to heat up includes: The heating element of the breast shield comes into contact with at least one of water, air, skin, or breast milk, thereby triggering or activating the heating element of the breast shield to generate heat.
[0036] In some embodiments, the heating element includes a self-generating material that can be activated; After the self-generating material is activated, it releases heat when it comes into contact with substances below the critical temperature and absorbs heat when it comes into contact with substances above the critical temperature, so as to maintain its tendency to approach the critical temperature.
[0037] In some embodiments, the critical temperature is in the range of 30 to 50 degrees Celsius.
[0038] In some embodiments, the self-generating material is activated upon contact with the user's breast or liquid or upon contact with air.
[0039] Sixthly, embodiments of this application provide a heating element for a breast pump, characterized in that it includes a heat-generating material without its own source.
[0040] In some embodiments, the self-generating material can be activated; After the self-generating material is activated, it releases heat when it comes into contact with substances below the critical temperature and absorbs heat when it comes into contact with substances above the critical temperature, so as to maintain its tendency to approach the critical temperature.
[0041] In some embodiments, the critical temperature is in the range of 30 to 50 degrees Celsius.
[0042] In some embodiments, the self-generating material is activated upon contact with the user's breast or liquid or upon contact with air.
[0043] In some embodiments, the self-generating material includes at least one of temperature-sensitive materials and phase change materials.
[0044] In some embodiments, the temperature-sensitive material comprises the following components: 70-75 parts by weight of silicone, 18-22 parts by weight of poly(N-isopropylacrylamide), 0.8-1.2 parts by weight of crosslinking agent, 8-10 parts by weight of weathering agent, and 1-1.5 parts by weight of temperature-sensitive synergist.
[0045] In some embodiments, the breast pump heating element includes a barrier layer that at least isolates the non-heat-generating material in the breast pump heating element from air, water, milk, or skin.
[0046] In some embodiments, the barrier layer at least isolates the non-self-heating material in the breast pump heating element from air or water. When the barrier layer is peeled off or damaged, the breast pump heating element begins to heat up after coming into contact with at least one of water, air, skin, and breast milk.
[0047] In some embodiments, the heating element of the breast pump is integrally integrated into at least one of the components of the breast pump, including the flange, the main unit, and the milk storage container.
[0048] In some embodiments, the heating element of the breast pump is detachably mounted on at least one of the components of the breast pump, including the flange, the main unit, and the milk storage container.
[0049] This application provides a self-heating material, a breast shield, a breast pump, a preheating method, and components. The self-heating material includes at least one of temperature-sensitive materials and phase change materials, which eliminates the need for additional electric heating devices on the breast shield, thus avoiding the problem of short circuits caused by breast milk and improving the safety of the breast pumping process.
[0050] Furthermore, the self-heating material can be activated. Once activated, the self-heating material releases heat when it comes into contact with substances below the critical temperature and absorbs heat when it comes into contact with substances above the critical temperature, thus maintaining itself close to the critical temperature. This also prevents the breast shield or breast pump heating element from experiencing sudden temperature rises or drops due to contact with liquid, keeping the temperature of the breast shield or breast pump heating element stable near the critical temperature. This improves user comfort and eliminates the need for an additional temperature sensor.
[0051] Furthermore, it simplifies the structure of breast pumps, including breast shields or heating elements, reducing costs and power consumption. Attached Figure Description
[0052] Figure 1 This is a schematic diagram of the breast shield provided in the embodiments of this application.
[0053] Figure 2 This is a schematic diagram of the material structure of the breast shield provided in the embodiments of this application.
[0054] Figure 3 This is a schematic diagram of the structure of the breast pump provided in the embodiments of this application.
[0055] Figure 4 This is a schematic diagram of the structure of the breast pumping system provided in the embodiments of this application. Detailed Implementation
[0056] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "multiple" means two or more, unless otherwise explicitly specified.
[0058] This application provides a self-heating material, a breast shield, a breast pump, a preheating method, and components. By using a self-heating material that includes at least one of temperature-sensitive materials and phase change materials, the breast shield containing the self-heating material can be made to eliminate the need for an additional electric heating device, thereby avoiding the problem of short circuits caused by breast milk and improving the safety of the breast pumping process.
[0059] The breast shield provided in this application will be described in detail below with reference to the accompanying drawings.
[0060] This application provides a self-heating material for a breast pump shield, which can be activated. When activated, the self-heating material releases heat when in contact with substances below its critical temperature and absorbs heat when in contact with substances above its critical temperature, thus maintaining its temperature close to the critical temperature.
[0061] In this way, without a power source and without the self-heating material being activated, the temperature of the breast pump shield or heating element made of this self-heating material can approach the critical temperature. This eliminates the need for additional electric heating devices on the breast pump shield or heating element, preventing short circuits caused by breast milk and improving the safety of the breast pumping process. Furthermore, it prevents sudden temperature rises or falls in the breast pump shield or heating element due to contact with liquid, keeping the temperature stable near the critical temperature, improving user comfort, and eliminating the need for an additional temperature sensor.
[0062] In some implementations, the critical temperature is located in the range of 30 to 50 degrees Celsius. 30 to 50 degrees Celsius is the temperature range that is comfortable for the human body; temperatures that are too high or too low can easily cause discomfort.
[0063] Optionally, the critical temperature is 30 degrees, 35 degrees, 36 degrees, 37 degrees, 38 degrees, 39 degrees, 40 degrees, 41 degrees, 42 degrees, 43 degrees, 44 degrees, 45 degrees or 50 degrees.
[0064] Preferably, the critical temperature is 40 degrees Celsius.
[0065] In some implementations, the heat-generating material is activated upon contact with the user's breast or a liquid. Optionally, the liquid is milk or water, etc.
[0066] In some embodiments, the self-generating material includes at least one of a temperature-sensitive material and a phase change material. A temperature-sensitive material (referred to as "thermally sensitive material") is capable of responding to changes in ambient temperature, causing its temperature to approach its critical temperature. A phase change material can absorb or release a large amount of latent heat during a phase change process, thereby causing its temperature to approach its critical temperature.
[0067] In some implementations, the time during which the self-generating material tends to approach the critical temperature after activation is a first preset time.
[0068] Optionally, the first preset time is the average time of one breast pumping session. For example, the first preset time is 15 minutes, 20 minutes, or 30 minutes, etc.
[0069] Optionally, during a second preset time after the self-generating material is activated, the temperature of the self-generating material can be maintained within a first preset temperature range, which includes a critical temperature.
[0070] For example, the second preset time is 1 second (s), 2s, 5s, 10s, 15s or 20s, etc.
[0071] Optionally, the first preset temperature range is determined based on the critical temperature plus or minus the preset temperature fluctuation amplitude.
[0072] For example, the preset temperature fluctuation amplitude is 0.1 degrees, 0.5 degrees, 0.8 degrees or 1 degree, etc.
[0073] For example, when the critical temperature is 40 degrees and the preset temperature fluctuation amplitude is 0.5 degrees, the first preset temperature range is [39.5 degrees, 40.5 degrees].
[0074] In some embodiments, the temperature-sensitive material comprises the following components: 70-75 parts by weight of silicone, 18-22 parts by weight of poly(N-isopropylacrylamide), 0.8-1.2 parts by weight of crosslinking agent, 8-10 parts by weight of weathering agent, and 1-1.5 parts by weight of temperature-sensitive synergist. The poly(N-isopropylacrylamide) is used to adjust the critical temperature of the temperature-sensitive material.
[0075] Poly(N-isopropylacrylamide) (PNIPAM) is a thermosensitive polymer that responds to changes in ambient temperature; the balance of hydrophilic and hydrophobic groups in its molecular chain changes with temperature. In the case of temperature-sensitive materials including PNIPAM, the material is activated upon contact with a liquid without any self-generating source.
[0076] When a temperature-sensitive material comes into contact with a substance below its critical temperature, the molecular chains of poly(N-isopropylacrylamide) are in a hydrophilic, swelling state, releasing heat and causing the temperature of the material itself to rise. When the temperature-sensitive material comes into contact with a substance above its critical temperature, the molecular chains of poly(N-isopropylacrylamide) are in a hydrophobic, contracting state, absorbing heat and inhibiting the temperature rise of the material, thus maintaining its temperature close to the critical temperature.
[0077] The content of poly(N-isopropylacrylamide) is related to the critical temperature of the temperature-sensitive material and the time required to maintain the activated state. To ensure that the critical temperature of the temperature-sensitive material is within the range of 30°C to 50°C and is maintained for at least a first preset time, the content of poly(N-isopropylacrylamide) in this application is set to 18-22 parts by weight.
[0078] In some embodiments, poly(N-isopropylacrylamide) is uniformly dispersed in silicone. This increases the contact area between the poly(N-isopropylacrylamide) and the user's breast or liquid, thereby increasing the rate at which the self-heating material is activated and its temperature approaches the critical temperature.
[0079] Optionally, poly(N-isopropylacrylamide) is uniformly dispersed in silica gel in the form of particles. This reduces the probability of poly(N-isopropylacrylamide) agglomerating in the silica gel during manufacturing, resulting in more uniform dispersion of poly(N-isopropylacrylamide) in the silica gel. This avoids the problem of uneven heating in self-heating materials caused by localized accumulation of poly(N-isopropylacrylamide), thereby improving the heating uniformity of self-heating materials.
[0080] When poly(N-isopropylacrylamide) is uniformly dispersed in silica gel in the form of particles, a crosslinking agent is used to promote the chemical bonding between the silica gel and the poly(N-isopropylacrylamide) particles, prevent the poly(N-isopropylacrylamide) particles from separating from the silica gel, thereby improving the stability of the temperature-sensitive material.
[0081] In some embodiments, the particle diameter of poly-N-isopropylacrylamide is between 5 micrometers and 8 micrometers.
[0082] When the temperature-sensitive material is not activated, poly(N-isopropylacrylamide) can adjust the state of its molecular chains according to the ambient temperature, so that the temperature of the temperature-sensitive material is consistent with the ambient temperature, and then be reactivated when it comes into contact with the user's breast or liquid again.
[0083] In some implementations, silicone is used to adjust the elastic and mechanical properties of the temperature-sensitive material to corresponding parameter value ranges.
[0084] Optionally, the silicone may be medical-grade or food-grade silicone.
[0085] Optionally, weathering agents are used to improve the weather resistance of temperature-sensitive materials, enabling them to withstand multiple temperature changes from ambient temperature to critical temperature without damage, thus extending their service life. Weathering agents can also be used to narrow the low critical solution temperature phase transition range of poly(N-isopropylacrylamide), improving the precision of critical temperature regulation, thereby allowing the temperature-sensitive material to approach its critical temperature more precisely upon activation.
[0086] In some embodiments, the weathering agent may include at least one of titanium dioxide powder, zinc oxide powder, and silicon dioxide powder.
[0087] For example, the weathering agent includes titanium dioxide powder, which may be nanoscale. Nanoscale titanium dioxide powder is used to enhance the weather resistance of temperature-sensitive materials and, through the nano-effect, narrows the low critical solution temperature phase transition range of poly(N-isopropylacrylamide), improving the precision of critical temperature regulation, thereby enabling the temperature-sensitive material to approach its critical temperature more closely when activated.
[0088] Optionally, the temperature-sensitive synergist is used to stabilize the conformation of the poly(N-isopropylacrylamide) molecular chain through ion-dipole interactions, further improving the precision of the critical temperature regulation, thereby enabling the temperature-sensitive material to be activated closer to the critical temperature.
[0089] In some embodiments, the temperature-sensitive synergist includes at least one of temperature-sensitive ionic liquid, chitosan, lauric acid, gelatin, citric acid, and trehalose.
[0090] For example, temperature-sensitive synergists include temperature-sensitive ionic liquids. In some embodiments, the temperature-sensitive ionic liquid includes at least one of 1-imidazolium-based temperature-sensitive ionic liquids, pyridine-based temperature-sensitive ionic liquids, quaternary ammonium salt-based temperature-sensitive ionic liquids, and quaternary phosphonium salt-based temperature-sensitive ionic liquids.
[0091] Optionally, imidazole-based temperature-sensitive ionic liquids include 1-ethyl-3-methylimidazolium tetrafluoroborate, 1-butyl-3-methylimidazolium tetrafluoroborate, 1-butyl-3-methylimidazolium hexafluorophosphate, 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide, 1-hexyl-3-methylimidazolium tetrafluoroborate, and 1-hydroxyethyl-3-methylimidazolium tetrafluoroborate, etc.
[0092] Optionally, pyridine-based temperature-sensitive ionic liquids include 1-butyl-4-methylpyridine tetrafluoroborate, 1-hexylpyridine hexafluorophosphate, and 1-octylpyridine bis(trifluoromethanesulfonyl)imide, etc.
[0093] Optionally, quaternary ammonium salt temperature-sensitive ionic liquids include tetrabutylammonium tetrafluoroborate, trioctylmethylammonium bis(trifluoromethanesulfonyl)imide, and dodecyltrimethylammonium nitrate, etc.
[0094] Optionally, quaternary phosphonium salt temperature-sensitive ionic liquids include tetrabutylphosphonium hexafluorophosphate and trihexyltetradecylphosphonium bis(trifluoromethanesulfonyl)imide, etc.
[0095] For example, temperature-sensitive ionic liquids include 1-ethyl-3-methylimidazolium tetrafluoroborate.
[0096] In some embodiments, a crosslinking agent is used to promote the bonding between silicone and poly(N-isopropylacrylamide) and prevent the poly(N-isopropylacrylamide) particles from separating from the silicone, thereby improving the stability of the temperature-sensitive material.
[0097] In some embodiments, the crosslinking agent includes at least one of platinum vulcanizing agent, zinc oxide, methyldichlorosilane, or polymethylhydrosiloxane.
[0098] For example, the crosslinking agent includes a platinum vulcanizing agent.
[0099] In some embodiments, the phase change material includes a phase change product and a matrix material, wherein the phase change product is uniformly dispersed in the matrix material.
[0100] Optionally, the phase change product is uniformly dispersed in the matrix material in the form of particles.
[0101] Alternatively, the matrix material may include at least one of silicone, plastic and graphene.
[0102] Alternatively, plastics include polyvinyl chloride (PVC), polyethylene, and polypropylene, etc.
[0103] For example, the matrix material includes silicone.
[0104] Optionally, the phase change agent includes at least one of paraffin, fatty acid, and polyethylene glycol.
[0105] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of the breast shield provided in an embodiment of this application. Figure 1 As shown, this application also provides a breast pump shield 10, which is used to conform to the user's breast, accommodate the user's nipple, and receive milk. The breast pump shield 10 includes at least a portion of a heating element, which includes a self-heating material. The self-heating material can be the self-heating material described above in this application, or it can be a self-heating material in the prior art. In this way, when the heating element is activated without being connected to a power source, the temperature of the breast pump shield approaches the critical temperature, eliminating the need for an additional electric heating device on the breast pump shield. This avoids the problem of short circuits caused by milk, thereby improving the safety of the milk pumping process. Furthermore, it also prevents the breast pump shield from experiencing sudden temperature rises or drops due to contact with liquid, keeping the temperature of the breast pump shield stable near the critical temperature, improving user comfort, and eliminating the need for an additional temperature sensor.
[0106] In some embodiments, the breast shield 10 includes a flange 11 and a breast suction channel 12, the flange 11 being for conforming to the user's breast and the breast suction channel 12 being for accommodating the user's nipple and receiving milk.
[0107] Optionally, the flange includes a heating element.
[0108] Optionally, the breast pump channel includes a heating element.
[0109] Optionally, both the flange and the milk suction channel include heating elements.
[0110] In some embodiments, the thickness of the heating element is between 0.2 mm and 0.5 mm, for example, the thickness of the heating element is 0.2 mm, 0.3 mm, 0.4 mm or 0.5 mm.
[0111] In some implementations, the heating element is a layered structure within the breast shield.
[0112] In some implementations, the heating element can be an integral structure covering all or part of the breast shield.
[0113] Please see Figure 2 , Figure 2 This is a schematic diagram of the material structure of the breast shield provided in an embodiment of this application. For example... Figure 2 As shown, in some embodiments, the heating element 13 is located on the first side P1 of the breast shield 10 that directly contacts the user's breast or breast milk. In this way, the heating element can be easily activated at the beginning of the breast pumping process, which can shorten the time it takes for the breast shield to reach the critical temperature, improve the comfort of using the breast shield, and eliminate the need for an additional activation method.
[0114] like Figure 2 As shown, exemplarily, the heating element is a self-heating material layer. In some embodiments, the breast shield 10 further includes a heat insulation layer 14, which is adjacent to the heating element 13. In this way, the heat insulation layer can provide heat preservation for the heating element, thereby prolonging the duration for which the temperature of the breast shield approaches the critical temperature and improving the comfort of using the breast shield.
[0115] In some embodiments, the thickness of the insulation layer is between 0.2 mm and 0.8 mm, for example, the thickness of the insulation layer is 0.2 mm, 0.3 mm, 0.5 mm or 0.8 mm, etc.
[0116] Optionally, the insulation layer may be made of at least one of polyethylene, polyurethane, polyester fiber, and cotton fiber.
[0117] Alternatively, the insulation layer can have a porous or hollow structure. In this way, the insulation layer contains air, providing better thermal insulation.
[0118] like Figure 2 As shown, in some embodiments, the heat insulation layer 14 is disposed on the side of the heating element 13 away from the user's breast or breast milk.
[0119] like Figure 2 As shown, in some embodiments, the breast shield 10 further includes a support layer 15 for maintaining the shape of the breast shield 10, and the support layer 15 is adjacent to the heat insulation layer 14. In this way, the support layer can maintain the shape of the breast shield, maintain the elasticity and softness of the breast shield, thereby improving the comfort of using the breast shield.
[0120] In some implementations, the thickness of the support layer is between 0.5 mm and 1 mm, for example, the thickness of the insulation layer is 0.5 mm, 0.6 mm, 0.8 mm or 1 mm.
[0121] Optionally, the support layer 15 is located on the second side P2 opposite to the first side P1 of the breast shield 10.
[0122] Please see Figure 3 , Figure 3 This is a schematic diagram of the structure of the breast pump provided in an embodiment of this application. Figure 3 As shown, this application also provides a breast pump 1, which includes a breast shield 10 as described above, a milk storage container 20, and a main unit 30. The milk storage container 20 is used to store the milk collected by the breast shield 10. The main unit 30 is used to control the breast pump 1 to perform milk expression. In this way, the breast pump does not need to include an additional electric heating device specifically designed for the breast shield, which can avoid the problem of short circuits caused by milk, thereby improving the safety of the milk expression process. Furthermore, there is no need to set up an additional temperature sensor, which simplifies the structure of the breast pump including the breast shield, reduces costs, and also reduces power consumption.
[0123] In some implementations, the breast pump also includes an activation component for activating the heating element in the breast shield. This allows the heating element to be activated in advance when the user is about to begin pumping, ensuring the breast shield reaches its critical temperature at the start of pumping, thus improving user comfort.
[0124] Optionally, the activation component includes a liquid pump, and a liquid flow path is provided in the heating element. The liquid pump is used to pump liquid into the liquid flow path to activate the heating element.
[0125] Optionally, the activation component includes a first sprayer disposed on the breast pump, the first sprayer including at least one nozzle for spraying liquid onto the breast shield. The heating element is activated when the first sprayer sprays liquid onto the surface of the heating element of the breast shield.
[0126] Optionally, the activation component can heat the liquid therein, and the temperature of the heated liquid can be between 30 degrees Celsius and 50 degrees Celsius.
[0127] In some embodiments, the activation component is a barrier layer that at least isolates the non-self-generating material in the heating element from air or water. When the barrier layer is peeled off or damaged, the heating element begins to generate heat after coming into contact with at least one of water, air, skin, or milk.
[0128] Optionally, the barrier layer is a separate barrier element.
[0129] Optionally, the barrier layer is detachably connected to the heating element.
[0130] Optionally, the barrier layer is made of silicone.
[0131] For example, the barrier layer is a silicone patch that can be attached to the heating element, thereby detachably connecting the barrier layer and the heating element.
[0132] Please see Figure 4 , Figure 4 This is a schematic diagram of the structure of the breast pumping system provided in an embodiment of this application. Figure 4 As shown, this application also provides a breast pumping system 2, including a breast pump 1 as described above and an activation device 21. When the breast pump 1 is placed in the activation device 21, the heating element 13 in the breast shield 10 of the breast pump 1 is activated. In this way, the heating element can be activated in advance by the activation device when the user is about to start using the breast pump, so that the temperature of the breast shield reaches the critical temperature when the user starts pumping, thereby improving the comfort of using the breast pump.
[0133] Optionally, the activation device includes a first liquid container. When the first liquid container contains a first preset volume of liquid, the breast pump can be placed into the first liquid container, thereby activating the heating element in the breast pump's breast shield.
[0134] Optionally, the activation device includes a second liquid container. When the second liquid container contains a second preset volume of liquid, the breast shield of the breast pump can be placed into the second liquid container, thereby activating the heating element in the breast shield.
[0135] Optionally, the activation device includes a second sprayer. The heating element is activated when the second sprayer sprays liquid onto the surface of the heating element of the breast pump cover.
[0136] Optionally, the activation device can heat the liquid therein, and the temperature of the heated liquid can be between 30 degrees Celsius and 50 degrees Celsius.
[0137] In some embodiments, this application also provides a method for preheating a breast pump shield, the method comprising step S100.
[0138] Step S100: Trigger or activate the heating element of the breast shield to heat up.
[0139] In some embodiments, triggering or activating the heating element of the breast shield to heat up includes: bringing the heating element of the breast shield into contact with at least one of water, air, skin, and breast milk, thereby triggering or activating the heating element of the breast shield to heat up.
[0140] In some embodiments, the heating element includes a self-generating material as described above.
[0141] This application also provides a heating element for a breast pump, comprising a self-generating material. This self-generating material can be the self-generating material described above in this application, or it can be a self-generating material in the prior art.
[0142] In some embodiments, the heating element of the breast pump includes a barrier layer that at least isolates the non-heat-generating material in the heating element from air, water, milk, or skin.
[0143] In some embodiments, the barrier layer at least isolates the non-self-heating material in the breast pump heating element from air or water. When the barrier layer is peeled off or damaged, the breast pump heating element begins to heat up after coming into contact with at least one of water, air, skin, or breast milk.
[0144] Optionally, the barrier layer is a separate barrier element.
[0145] Optionally, the barrier layer is detachably connected to the heating element of the breast pump.
[0146] Optionally, the barrier layer is made of silicone.
[0147] For example, the barrier layer is a silicone patch that can be attached to the heating element of the breast pump heating component, thereby detachably connecting the barrier layer to the breast pump heating component.
[0148] In some embodiments, the heating element of the breast pump is integrated into at least one of the components of the breast pump, including the flange, the main unit, and the milk storage container.
[0149] In some embodiments, the heating element of the breast pump is detachably mounted on at least one of the components of the breast pump, including the flange, the main unit, and the milk storage container.
[0150] For example, the heating element of the breast pump is installed on the flange of the breast pump. After the barrier layer is torn off, the heating element can come into contact with the human breast and start to heat up.
[0151] In summary, the beneficial effects of this application are: 1. By using a self-heating material, including at least one of temperature-sensitive materials and phase change materials, the breast pump shield containing the self-heating material can be made to eliminate the need for an additional electric heating device, thereby avoiding the problem of short circuits caused by breast milk and improving the safety of the breast pumping process.
[0152] 2. The self-heating material can be activated. After activation, the self-heating material releases heat when it comes into contact with substances below the critical temperature and absorbs heat when it comes into contact with substances above the critical temperature, so as to maintain itself close to the critical temperature. It can also prevent the breast shield or the heating element of the breast pump from experiencing a sudden rise or fall in temperature due to contact with liquid. This keeps the temperature of the breast shield or the heating element of the breast pump stable near the critical temperature, which can improve the user's comfort and eliminate the need for an additional temperature sensor.
[0153] 3. It simplifies the structure of breast pumps, including breast shields or heating elements, reducing costs and power consumption.
[0154] 4. The breast shield also includes a heat insulation layer, which can keep the heat-generating part warm, thereby prolonging the time that the temperature of the breast shield approaches the critical temperature and improving the comfort of using the breast shield.
[0155] 5. The breast shield also includes a support layer, which can maintain the shape of the breast shield and preserve its elasticity and softness, thereby improving the comfort of using the breast shield.
[0156] 6. The breast pump also includes an activation component that can pre-activate the heating element when the user is about to start pumping, so that the temperature of the breast shield reaches the critical temperature when pumping begins, thereby improving the comfort of using the breast pump.
[0157] In summary, this application provides a self-heating material, a breast shield, a breast pump, a preheating method, and components. The self-heating material includes at least one of temperature-sensitive materials and phase change materials. By using a self-heating material that includes at least one of temperature-sensitive materials and phase change materials, this application eliminates the need for additional electric heating devices on the heating element of the breast shield or breast pump incorporating this material. This avoids the problem of short circuits caused by breast milk, thereby improving the safety of the breast pumping process.
[0158] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A self-generating material, characterized in that, The self-generating material without heat source includes at least one of temperature-sensitive materials and phase change materials.
2. The self-generating material according to claim 1, characterized in that, The temperature-sensitive material comprises the following components: 70-75 parts by weight of silicone, 18-22 parts by weight of poly(N-isopropylacrylamide), 0.8-1.2 parts by weight of crosslinking agent, 8-10 parts by weight of weathering agent, and 1-1.5 parts by weight of temperature-sensitive synergist.
3. The self-generating material according to claim 2, characterized in that, The weather-resistant agent includes titanium dioxide powder.
4. The self-generating material according to claim 2, characterized in that, The temperature-sensitive synergist includes a temperature-sensitive ionic liquid.
5. The self-generating material according to claim 4, characterized in that, The temperature-sensitive ionic liquid includes 1-ethyl-3-methylimidazolium tetrafluoroborate.
6. The self-generating material according to claim 2, characterized in that, The crosslinking agent includes a platinum vulcanizing agent.
7. The self-generating material according to claim 2, characterized in that, The poly(N-isopropylacrylamide) is uniformly dispersed in the silica gel.
8. The self-generating material according to claim 7, characterized in that, The poly(N-isopropylacrylamide) is uniformly dispersed in the silica gel in the form of particles.
9. The self-generating material according to claim 8, characterized in that, The particle diameter of the poly(N-isopropylacrylamide) is between 5 micrometers and 8 micrometers.
10. The self-generating material according to claim 1, characterized in that, The phase change material includes a phase change product and a matrix material, wherein the phase change product is uniformly dispersed in the matrix material.
11. A breast pump shield, characterized in that, The breast shield is designed to fit against the user's breast, accommodate the user's nipple, and receive breast milk. The breast shield includes at least a heating element, which comprises a heat-generating material.
12. The breast shield according to claim 11, characterized in that, The breast shield includes a flange and a breast suction channel. The flange is used to fit against the user's breast, and the breast suction channel is used to accommodate the user's nipple and receive milk. The flange and / or the milk suction channel includes the heating element.
13. The breast shield according to claim 11, characterized in that, The heating element is located on the side of the breast shield that directly contacts the user's breast or breast milk.
14. The breast shield according to claim 11, characterized in that, The breast shield also includes a heat insulation layer, which is adjacent to the self-heating material.
15. The breast shield according to claim 14, characterized in that, The heat insulation layer is located on the side of the heating element away from the user's breast or breast milk.
16. The breast shield according to claim 14, characterized in that, The breast shield also includes a support layer for maintaining the shape of the breast shield, and the support layer is adjacent to the heat insulation layer.
17. A breast pump, characterized in that, The breast pump includes a breast shield as described in any one of claims 11-16, and the breast pump further includes a milk storage container and a main unit; The milk storage container is used to store the milk collected by the breast shield; The host is used to control the breast pump to perform the milk pumping operation.
18. The breast pump according to claim 17, characterized in that, The breast pump also includes an activation component, which is used to activate the heating element in the breast shield to generate heat.
19. The breast pump according to claim 17, characterized in that, The activation component is a barrier layer that at least isolates the non-self-heating material in the heating element from air or water. When the barrier layer is peeled off or damaged, the heating element begins to heat up after coming into contact with at least one of water, air, skin, or breast milk.
20. A breast pumping system comprising a breast pump as described in claim 17 and an activation device, wherein when the breast pump is placed in the activation device, a heating element in the breast pump's breast shield is activated.
21. A method for preheating a breast pump shield, characterized in that, The breast shield preheating method includes: triggering or activating the heating element of the breast shield to heat up.
22. The preheating method for the breast pump shield according to claim 21, characterized in that, The triggering or activation of the heating element of the breast shield includes: The heating element of the breast shield comes into contact with at least one of water, air, skin, or breast milk, thereby triggering or activating the heating element of the breast shield to generate heat.
23. The preheating method for the breast pump shield according to claim 21, characterized in that, The heating element includes a self-generating material, which can be activated. After the self-generating material is activated, it releases heat when it comes into contact with substances below the critical temperature and absorbs heat when it comes into contact with substances above the critical temperature, so as to maintain its tendency to approach the critical temperature.
24. The preheating method for the breast pump shield according to claim 23, characterized in that, The critical temperature is in the range of 30 degrees Celsius to 50 degrees Celsius.
25. The preheating method for the breast pump shield according to claim 23, characterized in that, The self-generating material is activated upon contact with the user's breast or liquid or upon contact with air.
26. A heating element for a breast pump, characterized in that, This includes materials that do not generate heat from their own source.
27. The breast pump heating element according to claim 26, characterized in that, The self-generating material can be activated; After the self-generating material is activated, it releases heat when it comes into contact with substances below the critical temperature and absorbs heat when it comes into contact with substances above the critical temperature, so as to maintain its tendency to approach the critical temperature.
28. The breast pump heating element according to claim 27, characterized in that, The critical temperature is in the range of 30 degrees Celsius to 50 degrees Celsius.
29. The breast pump heating element according to claim 27, characterized in that, The self-generating material is activated upon contact with the user's breast or liquid or upon contact with air.
30. The breast pump heating element according to claim 27, characterized in that, The self-generating material without heat source includes at least one of temperature-sensitive materials and phase change materials.
31. The heating element of the breast pump according to claim 30, characterized in that, The temperature-sensitive material comprises the following components: 70-75 parts by weight of silicone, 18-22 parts by weight of poly(N-isopropylacrylamide), 0.8-1.2 parts by weight of crosslinking agent, 8-10 parts by weight of weathering agent, and 1-1.5 parts by weight of temperature-sensitive synergist.
32. The breast pump heating element according to claim 26, characterized in that, The heating element of the breast pump includes a barrier layer that at least isolates the non-heat-generating material in the heating element from air, water, milk, or skin.
33. The heating element of the breast pump according to claim 32, characterized in that, The barrier layer at least isolates the non-self-heating material in the breast pump heating element from air or water. When the barrier layer is peeled off or damaged, the breast pump heating element begins to heat up after coming into contact with at least one of water, air, skin, and breast milk.
34. The breast pump heating element according to any one of claims 26 to 33, characterized in that, The heating element of the breast pump is integrated into at least one of the components of the breast pump, including the flange, the main unit, and the milk storage container.
35. The breast pump heating element according to any one of claims 26 to 33, characterized in that, The heating element of the breast pump can be detachably installed on at least one of the components of the breast pump, including the flange, the main unit, and the milk storage container.