Massage device for promoting lymphatic reflux and relieving breast distending pain

Abstract

The invention relates to a massage device for promoting lymphatic reflux and relieving breast distending pain. The massage device comprises a cup shell, an elastic film layer, a liquid storage layer cavity and a plurality of massage belts. The cups are filled with non-Newtonian fluid, so that the attaching and buffering performance is enhanced. Each massage belt is provided with a plurality of massage heads with asymmetric structures, and a controllable bending piece and a miniature pressure monitoring element are integrated in each massage belt. And the control module identifies a lymph retention area according to the pressure data, and dynamically adjusts the start-stop sequence, the massage strength and the speed rhythm of the massage head in combination with a breast anatomy modeling result, so that personalized guide drainage consistent with the mammary gland lymphatic reflux direction is realized. The system also has the functions of individual learning and map construction, can optimize a stimulation path and control parameters for a long time, effectively improves the relieving efficiency and the wearing comfort, and is suitable for breast lymph related nursing scenes such as postpartum breast distension and catheter obstruction.

Description

Technical Field

[0001] The present invention belongs to the technical field of maternal and infant care, medical rehabilitation and intelligent wearable equipment, and specifically relates to a massage device that promotes lymphatic return and relieves breast pain. Background Art

[0002] Breast engorgement is a common breast discomfort in postpartum lactating women, typically manifesting as breast fullness, tenderness, and localized skin tightness. In severe cases, it can be accompanied by nodules, fever, and even mastitis. Traditionally, breast engorgement has been attributed to excessive milk secretion and poor ductal emptying. However, a growing body of research is uncovering that obstructed local lymphatic drainage in the breast is a key underlying mechanism leading to increased interstitial pressure, compression and deformation of the mammary ducts, and difficulty in milk discharge.

[0003] The breast's lymphatic system is densely distributed between the glands and subcutaneous tissue, with its primary drainage radiating from the center of the nipple toward the axilla, subclavian region, and parasternal region. Normally, tissue fluid and metabolic waste produced within the breast flow smoothly back to the axillary lymph nodes and other areas via the superficial and deep lymphatic systems. However, in the early postpartum period, breast tissue rapidly becomes congested and edematous, and breast tension increases dramatically. This can easily lead to impaired lymphatic microcirculation, localized fluid retention, and pressure accumulation, creating a vicious cycle that can trigger or exacerbate breast engorgement and pain.

[0004] However, existing breast care devices mostly focus on promoting milk flow, using unidirectional compression, electric vibration, or hot compresses, but lack the precise identification and intervention of lymphatic pathways. They generally have the following problems:

[0005] Lack of anatomical targeting: The physiological distribution characteristics of breast lymphatic drainage channels are not taken into account. The direction of action is inconsistent with the return path, and may even cause reverse pushing, resulting in more severe fluid accumulation.

[0006] No sensing capability: Existing equipment cannot sense the fluid distribution in different areas of the breast, lacks the means to determine the location of lymphatic fluid retention, and has a passive and fixed control strategy, lacking dynamic response capabilities.

[0007] Inadequate fit and comfort: Under different breast shapes (such as sagging and loose), existing rigid massage heads are prone to poor fit, concentrated pressure, or uneven contact, which affects efficacy and increases discomfort.

[0008] Lack of feedback loop and adaptive control: Failure to combine multiple sources of information such as pressure feedback, breast tension status or pain perception to achieve individualized parameter adjustment and efficacy optimization.

[0009] In summary, although existing breast massage devices can relieve swelling and pain to a certain extent, there are still obvious technical gaps in identifying lymphatic retention areas, achieving breast structure adaptation, and dynamically adjusting massage paths and drainage directions. It is urgent to propose an intelligent massage device that can be based on the breast lymphatic anatomical path, has sensory feedback, and can be individually controlled, so as to improve the lymphatic return efficiency from the source and relieve breast swelling and pain more scientifically and efficiently. Summary of the Invention

[0010] The purpose of the present invention is to provide a massage device that promotes lymphatic return and relieves breast pain. The present invention has significant innovations in structural design, function implementation and control strategy, and can achieve flexible intelligent massage that is "adjusted to different people and regions", effectively relieve breast pain, and has high practical value and promotion prospects.

[0011] The technical solution adopted in the present invention is as follows:

[0012] A massage device for promoting lymphatic return and relieving breast pain, comprising:

[0013] A cup shell with a nipple-friendly space at the front and an outward-turning elastic bottom cover at the back;

[0014] an elastic membrane layer covering the inner surface of the cup shell, wherein the elastic membrane layer and the cup shell enclose a sealed liquid storage cavity filled with a non-Newtonian fluid;

[0015] A plurality of peristaltic massage belts are fixedly arranged on the outer surface of the elastic membrane layer and extend from front to back along the curved surface of the breast;

[0016] A plurality of massage heads are sequentially arranged along the length direction of the peristaltic massage belt;

[0017] A control module, configured to control the massage heads to bend sequentially from front to back to achieve a propulsive peristaltic squeezing of the breasts;

[0018] The massage head has a short slope facing the front end of the breast and a long slope facing the rear end of the breast. The intersection of the short slope and the long slope is an arc surface.

[0019] The short inclined surface and the long inclined surface are respectively embedded with controllable bending pieces, and the controllable bending pieces bend toward the rear end of the breast after being energized.

[0020] Wherein, the controllable bending sheet includes:

[0021] an elastic resin sheet located in the middle;

[0022] The first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet, which are respectively attached to both sides of the elastic resin sheet, generate anisotropic expansion and contraction when energized, thereby driving the entire body to generate bending deformation.

[0023] Wherein, the massage head body is made of solid rubber or silicone material.

[0024] Wherein, a micro pressure monitoring element is embedded in the arc surface to detect the contact pressure between the massage head and the breast.

[0025] The control module adjusts the voltage driving intensity and triggering rhythm of the controllable bending piece according to the pressure data fed back by the micro pressure monitoring element, so as to achieve dynamic and precise massage control.

[0026] The non-Newtonian fluid is a shear-thinning fluid, which provides compliant support when the massage head moves and forms a soft wrapping feeling when it is stationary, thereby enhancing wearing comfort.

[0027] Among them, an annular ventilation microporous structure is provided between the cup shell and the elastic bottom cover, which is used to maintain the dynamic balance of the temperature and humidity environment inside the cover during the massage process and avoid sweat retention.

[0028] The massage device further includes an intelligent detection module for collecting temperature, skin tension or tenderness sensitivity data of the user's breast area and inputting the data into the control module to adaptively adjust the massage intensity and rhythm.

[0029] Wherein, the control module includes:

[0030] An anatomical modeling module is used to identify the breast morphology based on the initial pressure distribution of each massage head after the device is worn, and select a matching model from preset spherical, teardrop, or sagging breast models. The modeling module maps the spatial position of each massage head within the cup to the anatomical regions corresponding to the breast tissue structure and major lymphatic drainage pathways.

[0031] The pressure analysis module is used to process the dynamic pressure data collected by the micro-pressure monitoring element in each massage head, extracting the average pressure value, pressure fluctuation amplitude, and pressure difference between each massage head and adjacent massage heads within a specified time window;

[0032] The fluid retention identification module is used to determine the lymphatic fluid concentration area based on the above analysis results, wherein an area that meets any of the following conditions is identified as a lymphatic fluid retention area:

[0033] (1) The average pressure of multiple consecutive massage heads increased significantly and the fluctuation amplitude decreased significantly;

[0034] (2) There is a large pressure difference between adjacent massage heads, which is inconsistent with the normal lymphatic return direction;

[0035] The retention type classification module is used to determine whether the retention area is superficial, deep or lateralized based on the distribution range, depth and corresponding anatomical structure of the retention area.

[0036] After identifying the lymphatic fluid retention area, the control module executes the following control strategy for the area and its surrounding areas:

[0037] Start-stop control: activate the massage head corresponding to the retention area in advance or extend the working time to prolong the local effect time;

[0038] Intensity control: Increase the voltage driving intensity of the controllable bending piece in the massage head in the retention area, thereby improving the massage intensity in that area;

[0039] Rhythm control: Reduce the propulsion speed of the peristaltic massage belt in the retention area, making the peristaltic action slower and more sustained, facilitating the discharge of fluid;

[0040] Multi-belt coordinated control: If the retention area is adjacent to two or more massage belts, the control module adjusts the start and stop sequence and massage rhythm of these massage belts according to the preset lymphatic flow relationship, so that they work together to form a continuous guidance path from the nipple to the armpit or clavicle;

[0041] Individual learning and map construction: The control module records the frequency and response of lymphatic retention areas during multiple uses by the user, establishes a user-individualized breast lymphatic sensitive area map, and prioritizes high-risk areas in subsequent uses to achieve adaptive optimization of massage paths and parameters.

[0042] The massage device provided by the present invention promotes lymphatic return and relieves breast pain. It integrates anatomical structure modeling, dynamic pressure monitoring, non-Newtonian fluid cushioning support, controllable bending drive, and intelligent control strategy. Compared with the existing technology, it has the following significant benefits:

[0043] First, the present invention uses a micro-pressure monitoring element to acquire real-time contact pressure data from different breast regions. Combined with a pre-defined three-dimensional anatomical model of the breast, this technology maps individual breast morphology to lymphatic pathways, identifying areas where lymphatic fluid may be concentrated or blocked. Compared to existing techniques that rely solely on passive massage based on pre-programmed pathways, this technology actively locates and dynamically identifies areas of lymphatic retention, improving drainage accuracy.

[0044] Secondly, for the identified retention areas, the control module of the present invention can implement a zoning control strategy, including adjusting the start and stop rhythm of the corresponding massage head, enhancing the driving voltage to increase the local massage intensity, reducing the propulsion speed to prolong the action time, and coordinating the rhythm between adjacent massage belts so that the overall peristaltic path is consistent with the physiological lymphatic return direction of the breast, effectively preventing reverse extrusion or massage deviation, and enhancing physiological targeting and therapeutic effects.

[0045] Secondly, the massage head structure of this invention provides a clear propulsion and guidance function. Each massage head is made of solid silicone or rubber, providing excellent flexibility and support. Its structural design features a short bevel on one side and a long bevel on the other, forming a transitional arc surface between them, simulating the "one-way valve" function of lymphatic drainage. The short bevel faces the nipple, while the long bevel faces the axilla. As the massage head moves along the breast surface, a continuous propulsion pressure differential is generated, forming a flow path from the nipple outward.

[0046] Furthermore, controllable bending blades are embedded in the short and long slopes of the massage head. These blades, composed of two piezoelectric ceramic layers sandwiched between a layer of elastic resin, produce localized bending deformation through anisotropic expansion and contraction. This structure not only simplifies the traditional motor drive mechanism, significantly reducing thickness and noise, but also enables adjustable deformation of a single massage head in different directions, creating a realistic "push-and-relax" peristaltic rhythm that creates a physiological compression of breast tissue, simulating manual massage techniques for greater efficiency and a more natural experience.

[0047] Thirdly, the present invention adopts a liquid storage layer structure filled with non-Newtonian fluid. The fluid exhibits shear-thinning characteristics during the massage process, which can provide compliant support when the massage head moves, and form a soft and fitting covering when it is stationary. It can not only improve wearing comfort, but also buffer local stress concentration. It is superior to traditional airbags, springs or foam structures, and is especially suitable for long-term wear by people in the breast sensitive period.

[0048] In addition, the system also introduces an individual learning mechanism to record the recognition results and massage feedback effects of the retention area during use, gradually build a user-specific breast sensitive area map, and automatically optimize massage parameters and path allocation in subsequent use to achieve adaptive regulation based on individual physiological characteristics, effectively improving the intelligence level and long-term use efficiency of the equipment.

[0049] Finally, the present invention also integrates an intelligent detection module, which can synchronously collect physiological parameters such as temperature, skin tension or tenderness sensitivity in the breast area, and integrate them with pressure monitoring data to judge changes in tissue status, further realizing early identification and intervention of hidden problems such as breast blockage, inflammation or uneven tension, thereby improving the monitoring dimension and safety of the device.

[0050] In summary, the present invention has significant innovations in structural design, function realization and control strategy. It can realize flexible intelligent massage that is "adjusted to different people and regions", effectively relieve breast swelling pain, and has high practical value and promotion prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a schematic structural diagram of a massage device according to embodiment 1 of the present invention;

[0052] Figure 2 This is a schematic diagram of the massage device in Example 1 of the present invention when in operation;

[0053] Figure 3 Schematic diagram of the structure of the massage head of the present invention;

[0054] Figure 4 Schematic diagram of the structure of the controllable bending sheet of the present invention;

[0055] Figure 5 Schematic diagram of the structure of the massage device according to embodiment 2 of the present invention.

[0056] In the figure, 1. cup shell; 11. clearance space; 12. elastic bottom cover; 2. nipple; 3. elastic membrane layer; 31. liquid storage cavity; 32. non-Newtonian fluid; 4. peristaltic massage belt; 41. massage head; 42. short inclined plane; 43. long inclined plane; 44. arc surface; 45. controllable bending sheet; 451. elastic resin sheet; 452. first piezoelectric ceramic sheet; 453. second piezoelectric ceramic sheet; 46. micro pressure monitoring element; 5. breast; 6. elastic sac; 61. pressing sac body; 62. covering body; 63. reduced diameter portion; 64. through hole. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0058] Example 1. The present invention provides a massage device that promotes lymphatic return and relieves breast pain. It combines the breast anatomical structure, fluid retention distribution and user interaction behavior, and realizes dynamic identification and directional drainage of lymphatic concentration areas through multi-channel pressure sensing and control response. It is suitable for related nursing scenarios such as postpartum breast swelling and breast edema.

[0059] like Figures 1 to 4 As shown, the massage device includes: a cup shell 1, an elastic membrane layer 3, a liquid storage layer cavity 31, a non-Newtonian fluid 32, a peristaltic massage belt 4, a plurality of massage heads 41, a control module and an intelligent detection module.

[0060] The cup shell 1 is a rigid structure, integrally injection-molded from polycarbonate (PC), ABS, or other medical-grade high-strength plastics, offering excellent grip stability and pressure-applying rigidity. Its shallow, bowl-shaped form conforms to the contours of the human breast, with a clearance space 11 at the front to protect the nipple from direct pressure. An outward-folding elastic bottom cover 12 at the rear assists with positioning and protection.

[0061] During use, the user or a caregiver holds the cup shell and presses it against the breast, providing external compressive pressure on the mammary glands during the massage process, enhancing the depth of the internal massage structure and the efficiency of fluid drainage. To enhance physiological comfort and hygiene during use, an annular ventilation microporous structure is provided between the cup shell 1 and the bottom cover 12 to maintain air circulation within the cover, regulate local temperature and humidity, and reduce sweat retention and stuffiness.

[0062] The inner surface of the cup is covered with an elastic membrane layer 3, forming a sealed liquid reservoir cavity 31 between the cup shell and the outer shell. This cavity is filled with a shear-thinning non-Newtonian fluid 32. In static mode, this fluid is soft and enveloping, enhancing breast conformity and wearing comfort. During massage, the movement of the internal massage heads generates localized shear flow, providing flexible support and evenly transmitting force.

[0063] Multiple peristaltic massage belts 4 are fixed to the outer surface of the elastic membrane layer 3, extending along the breast surface from the nipple to the armpit. Each belt 4 is lined with multiple massage heads 41 along its length. These heads are made of solid silicone or rubber, flexible and conforming to the contours of the breast. They feature a short bevel 42 at the front and a long bevel 43 at the rear, with a curved surface 44 at their intersection. This geometric design allows the massage heads to gradually push toward the outer edge of the breast when activated, mimicking the natural flow of lymphatic fluid.

[0064] Embedded within the arcuate surface 44 is a micro-pressure monitoring element 46, which monitors the contact pressure between the massage head and breast tissue in real time. Controllable bending plates 45 are embedded within the short and long slopes of the massage head, respectively. These plates are constructed from an elastic resin sheet 451, with a first piezoelectric ceramic plate 452 and a second piezoelectric ceramic plate 453 attached to their respective sides. When applied with control voltages of opposite polarity, the two piezoelectric ceramic plates expand and contract in opposite directions, driving the entire bending plate to bend in a predetermined direction, achieving active, controllable squeezing action.

[0065] The device also includes a control module for controlling the massage head 41 to bend from front to back in sequence to achieve a propulsive peristaltic squeeze on the breast 5; the control module adjusts the voltage driving intensity and triggering rhythm of the controllable bending piece 45 according to the pressure data fed back by the micro pressure monitoring element 46 to achieve dynamic and precise massage control; the control module is installed in the external control box of the cup placement device or connected to a smart terminal (such as a mobile phone app). It mainly includes the following functional units:

[0066] An anatomical modeling module is used to identify the breast morphology type based on the initial pressure distribution of each massage head 41 after the device is worn, and select a matching model from the preset spherical cap, teardrop, or sagging breast models. The modeling module maps the spatial position of each massage head within the cup to the anatomical regions corresponding to the breast tissue structure and major lymphatic drainage pathways.

[0067] A pressure analysis module is used to process the dynamic pressure data collected by the micro pressure monitoring element 46 in each massage head 41, and extract the average pressure value, pressure fluctuation amplitude, and pressure difference between each massage head and adjacent massage heads within a specified time window;

[0068] The fluid retention identification module is used to determine the lymphatic fluid concentration area based on the above analysis results, wherein an area that meets any of the following conditions is identified as a lymphatic fluid retention area:

[0069] (1) The average pressure of multiple consecutive massage heads increased significantly and the fluctuation amplitude decreased significantly;

[0070] (2) There is a large pressure difference between adjacent massage heads, which is inconsistent with the normal lymphatic return direction;

[0071] The retention type classification module is used to determine whether the retention area is superficial, deep or lateralized based on the distribution range, depth and corresponding anatomical structure of the retention area;

[0072] After identifying the lymphatic fluid retention area, the control module executes the following control strategy for the area and its surrounding areas:

[0073] Start-stop control: activate the massage head 41 corresponding to the retention area in advance or extend the working time to prolong the local action time;

[0074] Strength control: increasing the voltage driving intensity of the controllable bending piece 45 in the massage head in the retention area, thereby improving the massage intensity in the area;

[0075] Rhythm control: reduce the propulsion speed of the peristaltic massage belt 4 in the retention area, making the peristaltic action slower and more sustained, facilitating the discharge of liquid;

[0076] Multi-belt coordinated control: If the retention area is adjacent to two or more massage belts, the control module adjusts the start and stop sequence and massage rhythm of these massage belts according to the preset lymphatic flow relationship, so that they work together to form a continuous guidance path from the nipple to the armpit or clavicle;

[0077] Individual learning and map construction: The control module records the frequency and response of lymphatic retention areas during multiple uses by the user, establishes a user-individualized breast lymphatic sensitive area map, and prioritizes high-risk areas in subsequent uses to achieve adaptive optimization of massage paths and parameters.

[0078] Furthermore, the massage device also includes an intelligent detection module for collecting temperature, skin tension or tenderness sensitivity data of the user's breast area, and inputting it into the control module to adaptively adjust the massage intensity and rhythm.

[0079] The working method of the massage device is:

[0080] Step S1: Manual fitting

[0081] The user or caregiver holds the rigid cup shell 1 and presses the device against the breast surface to ensure that the elastic membrane layer 3 fits the skin and the non-Newtonian fluid 32 in the cup covers the breast area, forming a good basic attachment state.

[0082] Step S2: Initial pressure modeling

[0083] The control module receives the initial static pressure values ​​of the pressure monitoring elements 46 embedded in all massage heads 41 and establishes an initial pressure distribution model;

[0084] Through the "anatomical modeling module", the breast shape (such as spherical crown type, teardrop type, and loose type) is identified, and based on the position of each massage head in the cup, a spatial mapping relationship with the breast tissue structure and the main lymphatic drainage path is generated.

[0085] Step S3: Dynamic pressure acquisition and analysis

[0086] The system continuously collects the contact pressure value of each massage head at a set frequency and extracts the following parameters:

[0087] Average pressure, fluctuation amplitude, adjacent pressure difference;

[0088] Step S4: Identification rules for lymphatic fluid retention areas

[0089] If any of the following conditions are met, the system identifies the area as a lymphatic retention area:

[0090] The average pressure of multiple consecutive massage heads increased significantly, and the fluctuation amplitude decreased;

[0091] There is a sudden change in pressure difference between adjacent massage heads, and the direction is opposite to the physiological lymphatic drainage path.

[0092] Step S5: Automatic classification of detention types

[0093] The identified areas are automatically classified according to their spatial depth, distribution range and anatomical location as follows:

[0094] Superficial type: close to the epidermis, limited to 1 to 2 massage heads;

[0095] Deep type: involves multiple continuous massage heads and requires high thrust;

[0096] Hemitype: located in the upper outer quadrant of the breast, near the entrance of the axillary tunnel.

[0097] Step S6: Strategy scheduling and execution

[0098] The control module automatically sets the following parameters based on the retention type and anatomical model:

[0099] Start-stop control: prolong the working time of the massage head corresponding to the retention area;

[0100] Force control: Increase the driving voltage in this area;

[0101] Rhythm control: slow down the advancement frequency and extend the massage dwell time;

[0102] Multi-belt coordinated control: coordinates multiple massage belts to form a continuous drainage path from the nipple to the armpit / clavicle.

[0103] Step S7: Constructing the user's individual lymphatic sensitivity map

[0104] The system records each identified detention area, mitigation response effect, and control parameters, creating a user-specific historical map for subsequent use:

[0105] Predict high-risk areas, prioritize and adjust control rhythm and intensity, and improve nursing efficiency and comfort;

[0106] Step S8: Physiological parameter auxiliary judgment

[0107] The intelligent detection module collects breast area data: surface temperature (>37.8°C may indicate inflammation), local tension (>10N / m), and tenderness response. If abnormal parameters are found, the control module will include the corresponding area in the high-priority reasoning processing sequence.

[0108] Step S9: Elastic bladder fluid transfer adjustment

[0109] When the user presses the cup shell too tightly or feels uncomfortable locally, the non-Newtonian fluid 32 will overcome the hoop force formed by the reduced diameter portion 63 of the elastic bladder 6 and enter the elastic bladder from the outer wall of the space 11 at the front of the cup, playing a buffering and decompression role.

[0110] Step S10: Manual assisted drainage

[0111] The user can squeeze the elastic bladder 6 to direct the non-Newtonian fluid to the back of the breast, coordinating with the natural lymphatic return direction to achieve auxiliary manual massage. After releasing the grip, the non-Newtonian fluid slowly flows back due to its low reflux characteristics, without forming reverse blockage.

[0112] The following are three typical clinical cases of the device of the present invention, used to illustrate its adaptability and effectiveness in different breast conditions:

[0113] Case 1: A woman who was breastfeeding for the first time on the 4th day after delivery experienced significant breast pain in both breasts

[0114] Basic status: The patient's breasts are generally tight and swollen, tender in the upper outer quadrant, palpation shows mild obstruction in the superficial duct area, and no milk secretion from the nipple.

[0115] System reaction process:

[0116] After the device is worn, the pressure modeling module identifies the breast shape as "spherical crown type" and the peristaltic massage belt is automatically arranged to adapt to the breast contour;

[0117] Initial data showed that the pressure of massage heads 3 to 5 in the upper outer quadrant increased (>4.5 kPa), and the fluctuation amplitude decreased significantly (<0.3 kPa), which was judged as "superficial retention";

[0118] The control module automatically extends the massage head's action time in that area by 10% and increases the drive voltage to 6.2V;

[0119] The pressure in the monitoring area dropped to 3.1 kPa within 5 minutes, and nipple milk leakage began;

[0120] Results of use: Within 10 minutes, the swelling and pain are relieved by more than 70%, the mammary ducts are unobstructed, and milk discharge is completed with breastfeeding.

[0121] Case 2: Deep pain in the left breast with discomfort during the second week after delivery

[0122] Basic condition: The breast shape is teardrop-shaped, there is no tenderness in the areola, but the pressure in the deep tissue is obvious.

[0123] System reaction process:

[0124] The initial pressure distribution showed a pattern of "high pressure in deep symmetrical areas and low fluctuation in superficial areas";

[0125] The system identified the deep retention area as the middle section of the breast corresponding to massage heads 6 to 9, and classified it as "deep retention";

[0126] The control module increases the driving voltage of this area from 5V to 7.5V, and adjusts the propulsion rhythm from once every 5 seconds to once every 8 seconds;

[0127] Simultaneously activate the adjacent side areas of the massage belt to create a transverse contraction force to guide drainage;

[0128] Results: After the first use, the pain was reduced by about 40%, and after the third use, the deep tenderness disappeared, and the patient was able to pump breast milk independently.

[0129] Case 3: One month after delivery, the right breast had a history of repeated milk blockage and local swelling and hardening.

[0130] Basic condition: The breast contour is loose and unilateral, the nipple is mildly galactorrhea, and the patient said that there is always a hard lump on the upper edge of the right breast.

[0131] System reaction process:

[0132] The location is recorded in the individual map as a historical high-frequency retention point, and the control module is activated first;

[0133] During this use, we again identified a sudden change in pressure difference at the position of massage head No. 5, with a sudden drop in fluctuation amplitude, consistent with lateral retention.

[0134] The control module applies local pressure (voltage +1.8V) and guides the multi-belt linkage to open the oblique drainage path (nipple → upper outer part → axilla);

[0135] Real-time pressure pain detection showed that the peak skin tension decreased from 11.4N / m to 7.2N / m;

[0136] Results of use: After the first use, the patient felt that the area was no longer swollen and milk blockage did not occur again within 3 days.

[0137] Example 2, see Figure 5 On the basis of Example 1, an elastic bag 6 is fixedly sleeved outside the clearance space 11 at the front end of the cup shell 1; the elastic bag 6 has an octopus-head-shaped pressing bag body 61 and an outwardly expanding covering body 62; the pressing bag body 61 and the covering body 62 are connected by a reduced diameter portion 63; the reduced diameter portion 63 presses and contacts the outer wall of the clearance space 11 at the front end of the cup shell 1 under static conditions, forming a self-hoop structure; the outer ring of the covering body 62 is sealed and fixedly connected to the outer surface of the cup shell 1; a plurality of through holes 64 are opened on the cup shell 1 corresponding to the covering body 62; the through holes 64 communicate with the liquid storage layer cavity 31 and the cavity enclosed by the covering body 62 and the cup shell 1.

[0138] Specifically, the pressing sac 61 is located at the front end of the elastic sac 6, directly corresponding to the nipple area 2, and can be made of flexible silicone or highly elastic TPE with certain ductility and resilience; the covering body 62 expands outward in a bowl-shaped shape, covering the outer ring of the front end of the cup shell 1; the reduced diameter portion 63 is located between 61 and 62, and is a narrow middle section, forming an "octopus head" type elastic constraint point; the reduced diameter portion 63 is self-hooped at the front end of the cup shell 1 (that is, the periphery of the clearance space 11) in static state, providing the function of a "closed pressure door"; the interior is filled with non-Newtonian fluid, which is homogeneous with the liquid storage layer cavity 31, so that it remains closed and fits under low shear conditions.

[0139] Dynamic response mechanism during user use

[0140] Scenario A: Overvoltage Protection Mechanism

[0141] When the user holds the cup shell and presses it against the breast, if too much force is applied, the internal pressure increases;

[0142] At this time, the non-Newtonian fluid is enhanced due to shear thinning fluidity, and impacts the reduced diameter portion 63 along the through hole 64;

[0143] The reduced diameter portion is deformed by force, opening the channel, and the non-Newtonian fluid is squeezed into the pressing capsule 61, causing volume expansion;

[0144] The expanded compression bag 61 pushes outward to offset part of the pressure exerted by the cup on the breast;

[0145] Achieve self-limiting pressure function to avoid excessive compression of the nipple and surrounding mammary ducts.

[0146] Scenario B: Manual assisted drain function

[0147] When the massage head 41 is not activated to work automatically, the user can manually squeeze and press the capsule 61;

[0148] This squeezing causes the non-Newtonian fluid to be pressed from the front area of ​​the nipple 2 through the through hole 64 into the liquid storage cavity 31 inside the cup;

[0149] The non-Newtonian fluid spreads behind the breast contour, guiding the lymph fluid in the superficial tissue to flow along the natural drainage direction;

[0150] After release, due to the high static viscosity of the non-Newtonian fluid, it will not flow back to the nipple as quickly as when squeezed, but will rebound viscously to maintain a stable volume, achieving the goal of energy-free, controllable and safe manual directional liquid pushing.

[0151] This device realizes the self-limiting pressure logic of "releasing pressure only when the threshold is exceeded" through the clamping force of the reduced diameter part and the passive response of the non-Newtonian fluid; it can realize intelligent judgment and force feedback response without electronic components, solving the problem of traditional cup-type breast care devices without overpressure protection.

[0152] The "shear thinning and static high damping" characteristics of non-Newtonian fluids naturally prevent flow in the opposite direction; after releasing manual squeezing, there is almost no fluid backflow in the "nipple → gland" direction, effectively avoiding the side effect of "pushing and massaging causing lymph congestion".

[0153] It can also be used independently of the electric control system, and is particularly suitable for primiparas and patients in the early stages of lactation who "cannot tolerate electric stimulation"; the manual pinching action has the advantages of controllability, individual adaptability and no need for electricity, filling the needs of people that electric massage systems cannot meet.

[0154] Compared with traditional cup devices, this embodiment constructs a complete chain of "inter-layer linkage → mechanical feedback → control and regulation", which improves the self-consistency of the overall response and the intelligence of the system.

[0155] In general, the elastic bladder structure proposed in Example 2:

[0156] In terms of structure, a "physical valve" is cleverly formed by reducing the diameter and using non-Newtonian fluid;

[0157] Functionally realize "automatic overpressure relief + passive directional auxiliary massage";

[0158] In terms of usage scenarios, it takes into account the needs of electric and manual, main system and peripheral buffer, shallow and deep care;

[0159] The safety, adaptability and user-friendliness of the device of the present invention are significantly improved, providing a very practical solution for breast-related care.

[0160] Example 3: Control mode and implementation scheme with nipple massage function

[0161] Based on the above-mentioned embodiment 1, this embodiment further provides a control mode that can be switched to a massage mode that pushes the nipple, which is applicable to the following typical scenarios:

[0162] The mammary ducts are patent but milk secretion is slow;

[0163] Mild firmness in the areola area or lack of tension in the nipple base;

[0164] Used to stimulate milk ejection reflex before breastfeeding;

[0165] Initial obstruction of the nipple site but normal peripheral glandular status;

[0166] To achieve the above functions, this embodiment does not require additional structures. By simply reversing the voltage polarity of the controllable bending piece through the control strategy, the bending direction of the massage head 41 can be reversed from the original "nipple to outer edge" to "outer edge to nipple", thereby achieving the switching of the pushing direction.

[0167] Since the massage head 41 of the present invention realizes active bending control by driving the controllable bending piece 45 through the double-sided anisotropic expansion and contraction of the piezoelectric ceramic, its bending direction is reversible:

[0168] In the original mode: the positive electrode of the first piezoelectric sheet 452 is energized, and the negative electrode of the second piezoelectric sheet 453 is energized, so that the bending sheet 451 bends toward the outer edge of the mammary gland;

[0169] In reverse mode: exchanging the polarities, active bending towards the nipple can be achieved, thereby driving the massage head towards the center.

[0170] This reversible control strategy does not require any changes to the massage head material, installation method, or piezoelectric piece structure; it only requires the control module to support bidirectional control logic.

[0171] Two switchable mode commands are set inside the control module:

[0172] Mode A: Default lymphatic drainage mode (nipple to outer edge)

[0173] Mode B: Nipple activation mode (outer edge to nipple)

[0174] When switching to mode B, the control flow is as follows:

[0175] Reverse the activation sequence: Set the activation sequence from the massage head farther from the nipple to the massage head closer to the nipple.

[0176] Voltage polarity switching: The control module synchronously reverses the polarity of the piezoelectric drive signal to drive the bending piece in the reverse direction;

[0177] Rhythm control: Considering the relative fragility of nipple tissue, the system automatically reduces the propulsion frequency in this mode (e.g., from 6 times / minute to 3 times / minute) and extends the dwell time at each point to 1.5-2.0 seconds.

[0178] Safety threshold judgment: The micro pressure monitoring element 46 embedded in the massage head monitors the pressure in real time. If the pressure in the nipple area exceeds a preset threshold (such as 6.0 kPa), the control system automatically reduces the driving intensity or suspends the advancement to prevent tissue damage.

[0179] Since the cup contains a shear-thinning non-Newtonian fluid 32, the massage head can also generate a thrust transmission mechanism equivalent to that of mode A when it is pushed in the reverse direction: when the bending drives the massage head downward, the non-Newtonian fluid flows locally in the shear zone and "derives" the fluid pressure toward the nipple; the non-Newtonian fluid has good static recovery properties, and no "backflow" will be formed after the massage is completed, and directional pressure discharge can be maintained.

[0180] The solution of this embodiment does not add any additional mechanical structure and can work in both directions through control logic switching; it can be used for the sequential nursing process of "first reverse push to start the nipple → then forward push to drain the outer edge"; the reverse squeezing action is soft and adjustable, combined with pressure feedback to ensure nipple safety; the same massage head and the same control module can achieve two completely opposite functional directions; it can also be combined with AI learning: if a certain part in the user map has long-term low pressure or difficulty in lactation, the system can automatically switch to this mode and activate it in advance.

[0181] Example 4:

[0182] On the basis of Example 3, this embodiment further optimizes the structure of the cup shell 1 so that it has the function of quickly connecting to a breast pump, so that the breast pumping operation can be performed synchronously after or during the lymphatic drainage massage.

[0183] Specifically, a removable cover is provided at the front end of the cup shell 1, corresponding to the nipple and areola area. This cover is screwed to the main body of the cup shell 1 via a threaded structure. The cover is made of medical-grade hard plastic or high-temperature resistant silicone and is normally closed, protecting the nipple and forming a sealed massage cavity.

[0184] When breast pumping is required, the user can unscrew the cover 8 and directly connect the breast pump to the threaded interface of the cup shell 1 through a dedicated breast pump connector to achieve a tight fit between the nipple and the breast pump flange.

[0185] This structure facilitates the following process operations:

[0186] After completing the automatic identification of lymphatic retention and performing local massage and drainage, the cover body 8 is unscrewed through the thread;

[0187] Use a breast pump to connect to the front thread of the cup to perform vacuum milk discharge;

[0188] Since the drainage has been guided in the front and the duct is unobstructed, milk extraction is smoother at this time and milk blockage is avoided.

[0189] This structure not only ensures the modular independence of massage and breast pumping functions, but also realizes functional expansion under the same cup structure, improving the convenience of device use and nursing efficiency.

[0190] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A massage device for promoting lymphatic return and relieving breast pain, characterized in that: include: A cup shell (1) is provided with a space (11) at the front end corresponding to the nipple (2), and an outward-turned elastic bottom cover (12) at the rear end; an elastic membrane layer (3) covering the inner surface of the cup shell (1), wherein the elastic membrane layer (3) and the cup shell (1) enclose a sealed liquid storage layer cavity (31), and the liquid storage layer cavity (31) is filled with a non-Newtonian fluid (32); A plurality of peristaltic massage belts (4) are fixedly arranged on the outer surface of the elastic membrane layer (3) and extend from front to back along the curved surface of the breast (5); A plurality of massage heads (41) are sequentially arranged along the length direction of the peristaltic massage belt (4); A control module for controlling the massage head (41) to bend from front to back in sequence to achieve propulsive peristaltic squeezing of the breast (5); The massage head (41) has a short inclined surface (42) on the side facing the front end of the breast (5), and a long inclined surface (43) on the side facing the rear end of the breast (5), and the intersection of the short inclined surface (42) and the long inclined surface (43) is an arc surface (44). The short inclined surface (42) and the long inclined surface (43) are respectively embedded with a controllable bending piece (45), and the controllable bending piece (45) bends toward the rear end of the breast (5) after being energized.

2. The massage device according to claim 1, wherein: The controllable bending sheet (45) comprises: an elastic resin sheet (451) located in the middle; The first piezoelectric ceramic sheet (452) and the second piezoelectric ceramic sheet (453) respectively attached to both sides of the elastic resin sheet (451) generate anisotropic expansion and contraction when energized, thereby driving the entire body to generate bending deformation.

3. The massage device according to claim 1, wherein: The massage head (41) body is made of solid rubber or silicone material.

4. The massage device according to claim 1, wherein: A micro pressure monitoring element (46) is embedded inside the arc surface (44) for detecting the contact pressure between the massage head (41) and the breast (5).

5. The massage device according to claim 4, characterized in that The control module adjusts the voltage driving intensity and triggering rhythm of the controllable bending piece (45) according to the pressure data fed back by the micro pressure monitoring element (46), so as to achieve dynamic and precise massage control.

6. The massage device according to claim 1, wherein: The non-Newtonian fluid (32) is a shear-thinning fluid, which provides compliant support when the massage head (41) moves, and forms a soft covering feeling in a static state, thereby enhancing wearing comfort.

7. The massage device according to claim 1, wherein: An annular ventilation microporous structure is provided between the cup shell (1) and the elastic bottom cover (12), which is used to maintain a dynamic balance of temperature and humidity in the cover during the massage process and to prevent sweat from stagnation.

8. The massage device according to claim 1, wherein: It also includes an intelligent detection module for collecting temperature, skin tension or tenderness sensitivity data of the user's breast area, and inputting it into the control module to adaptively adjust the massage intensity and rhythm.

9. The massage device according to claim 1, wherein: The control module includes: an anatomical modeling module for identifying the breast morphology type according to the initial pressure distribution of each massage head (41) after the device is worn, and selecting a matching model from a preset spherical crown type, teardrop type or loose breast model; the modeling module maps the spatial position of each massage head in the cup to the anatomical partition corresponding to the breast tissue structure and the main lymphatic drainage pathway; A pressure analysis module for processing dynamic pressure data collected by the micro pressure monitoring element (46) in each massage head (41), extracting the average pressure value of each massage head within a specified time window, the pressure fluctuation amplitude, and the pressure difference between adjacent massage heads; The fluid retention identification module is used to determine the lymphatic fluid concentration area based on the above analysis results, wherein an area that meets any of the following conditions is identified as a lymphatic fluid retention area: (1) The average pressure of multiple consecutive massage heads increased significantly and the fluctuation amplitude decreased significantly; (2) There is a large pressure difference between adjacent massage heads, which is inconsistent with the normal lymphatic return direction; The retention type classification module is used to determine whether the retention area is superficial, deep or lateralized based on the distribution range, depth and corresponding anatomical structure of the retention area.

10. The massage device according to claim 9, characterized in that After identifying the lymphatic fluid retention area, the control module executes the following control strategy for the area and its surrounding areas: Start-stop control: activating the massage head (41) corresponding to the retention area in advance or extending the working time to prolong the local action time; Strength control: increasing the voltage driving intensity of the controllable bending piece (45) in the massage head in the retention area, thereby improving the massage intensity in the area; Rhythm control: reducing the propulsion speed of the peristaltic massage belt (4) in the retention area, making the peristaltic action slower and more sustained, facilitating the discharge of fluid; Multi-belt coordinated control: If the retention area is adjacent to two or more massage belts, the control module adjusts the start and stop sequence and massage rhythm of these massage belts according to the preset lymphatic flow relationship, so that they work together to form a continuous guidance path from the nipple to the armpit or clavicle; Individual learning and map construction: The control module records the frequency and response of lymphatic retention areas during multiple uses by the user, establishes a user-individualized breast lymphatic sensitive area map, and prioritizes high-risk areas in subsequent uses to achieve adaptive optimization of massage paths and parameters.

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