Multi-mode constant-temperature perineal massage instrument

Abstract

This invention discloses a multi-mode constant-temperature bionic perineal massager, belonging to the field of obstetric rehabilitation equipment technology. It includes a bionic thumb massage head, a depth control limiting ring, a handheld main unit, a temperature control component, a closed-loop pressure drive component, a servo push rod, a main control circuit board, a human-machine interface component, and a lithium battery. The depth control limiting ring is located on the bionic thumb massage head, which is coaxially arranged with the handheld main unit. The handheld main unit has a circular guide mounting hole, and the bionic thumb massage head slides and seals with the circular guide mounting hole. The servo push rod is fixedly installed inside the handheld main unit and is drively connected to the bionic thumb massage head. Both the temperature control component and the closed-loop pressure drive component are located inside the bionic thumb massage head. This invention uses the above-mentioned multi-mode constant-temperature bionic perineal massager to achieve one-button standardized working condition switching through parameter linkage binding, while simultaneously constructing a dual-layer hardware safety protection architecture.

Description

Technical Field

[0001] This invention relates to the field of midwifery rehabilitation equipment technology, and in particular to a multi-mode constant temperature bionic perineal massager. Background Technology

[0002] Perineal massage devices are core auxiliary instruments used in obstetrics for prenatal labor preparation, vaginal dilation assistance, and postpartum perineal soft tissue repair. Through constant temperature hot compresses combined with bionic mechanical massage movements, they improve the flexibility of perineal tissues, reduce the risk of tearing during vaginal delivery, and effectively relieve postpartum perineal edema, muscle tension, and other problems. They are widely used in clinical obstetrics and home pregnancy and childbirth care.

[0003] Traditional equipment lacks a hardware-level multi-mode parameter fixed storage architecture, making it impossible to achieve one-click linkage and parameter locking for different modes. It relies solely on a single safety threshold as a fallback, and cannot perform individualized pressure fine-tuning for core midwifery scenarios. It has significant shortcomings in clinical adaptability, intelligence, and safety of use, making it difficult to meet the standardized, professional, and individualized needs of the entire pregnancy and childbirth care cycle. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-mode constant temperature bionic perineal massager that overcomes the shortcomings of existing technologies, such as poor end size adaptability, inability to insert for synchronous constant temperature hot compress, lack of pressure monitoring methods, imperfect stroke safety protection, and inconvenient cleaning and maintenance.

[0005] This invention provides a multi-mode constant-temperature bionic perineal massager, comprising a bionic thumb massage head, a depth control limiting ring, a handheld main unit, a temperature control component, a closed-loop pressure drive component, a servo push rod, a main control circuit board, a human-machine interface component, and a lithium battery. The depth control limiting ring is disposed on the bionic thumb massage head, which is coaxially arranged with the handheld main unit. The handheld main unit has a circular guide mounting hole, and the bionic thumb massage head slides and seals with the circular guide mounting hole. The servo push rod is fixedly installed inside the handheld main unit and is drively connected to the bionic thumb massage head. The temperature control component and the closed-loop pressure drive component are both disposed inside the bionic thumb massage head. The temperature control component, the closed-loop pressure drive component, the servo push rod, and the human-machine interface component are electrically connected to the main control circuit board. The main control circuit board and the lithium battery are both installed inside the handheld main unit. The main control circuit board integrates a multi-mode parameter storage and control module, a PID temperature control module, an over-temperature power-off protection module, and an over-pressure shutdown protection module. The human-machine interface component includes a mode selection unit and a pressure fine-tuning unit.

[0006] Preferably, the multi-mode parameter storage and control module internally stores four sets of hardware parameter configuration packages that are factory-fixed. The four sets of hardware parameter configuration packages include a prenatal preparation parameter configuration package, a birth canal dilation parameter configuration package, a postpartum repair parameter configuration package, and a custom adjustable parameter configuration package.

[0007] Preferably, the mode selection unit, the pressure fine-tuning unit, and the multi-mode parameter storage and control module are electrically connected, and the multi-mode parameter storage and control module is electrically connected to the PID temperature control module, the over-temperature power-off protection module, and the over-pressure shutdown protection module on the main control circuit board, respectively.

[0008] Preferably, the bionic thumb massage tip is coaxially connected from front to back with an arc end, a massage working section column and a thin columnar connecting section, and a depth control limiting ring is integrally formed at the junction of the massage working section column and the thin columnar connecting section. A transmission connecting seat is embedded and fixed in the center of the end of the thin columnar connecting section.

[0009] Preferably, the transmission connector is a rigid engineering plastic embedded injection molding structure, the transmission connector has a coaxial internal thread hole inside, the output shaft of the servo push rod has an external thread, and the output shaft of the servo push rod is threadedly engaged and tightened with the transmission connector.

[0010] Preferably, a circular guide mounting hole is opened at the front end of the handheld host. A waterproof sealing ring is embedded in the inner wall of the circular guide mounting hole. A thin columnar connecting section is coaxially inserted into the circular guide mounting hole. The outer wall of the thin columnar connecting section is sealed with the inner wall of the waterproof sealing ring. An annular groove is provided on the inner wall of the circular guide mounting hole. The waterproof sealing ring is a silicone O-ring and is interference-fitted into the annular groove.

[0011] Preferably, the temperature control component includes a graphene PTC heating element and an NTC thermistor, both of which are embedded and fixed within the inner wall of the bionic thumb massage tip. The main control circuit board integrates a PID temperature control module and an over-temperature power-off protection module.

[0012] Preferably, the closed-loop pressure drive component includes a distributed thin-film pressure sensor, which is embedded and fixed in the inner wall of the bionic thumb massage tip, and the main control circuit board integrates an overpressure shutdown protection module.

[0013] Preferably, the human-computer interaction component is embedded on the outer surface of the handheld host.

[0014] Preferably, the lithium battery is a DC5V low-voltage polymer lithium battery.

[0015] Therefore, the present invention adopts the above-mentioned multi-mode constant temperature bionic perineal massager, which overcomes the defects of the prior art, such as poor end size adaptability, inability to insert synchronous constant temperature hot compress, lack of pressure monitoring means, imperfect stroke safety protection, and inconvenient cleaning and maintenance.

[0016] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall structure of a multi-mode constant temperature bionic perineal massager according to the present invention; Figure 2 This is an enlarged structural schematic diagram of the bionic thumb massage tip in a multi-mode constant temperature bionic perineal massager of the present invention; Figure 3 This is an enlarged structural diagram of the front end of the handheld main unit in a multi-mode constant temperature bionic perineal massager of the present invention; Figure 4 This is a system block diagram of a multi-mode constant temperature bionic perineal massager according to the present invention.

[0018] Figure Labels 1. Bionic thumb massage tip; 11. Massage working section column; 12. Arc-shaped tip; 13. Thin columnar connecting section; 14. Transmission connecting seat; 2. Depth control limit stop ring; 3. Handheld host; 31. Servo push rod; 32. Circular guide mounting hole; 33. Waterproof sealing ring; 4. Temperature control component; 41. Graphene PTC heating element; 42. NTC thermistor; 5. Closed-loop pressure drive component; 51. Distributed thin-film pressure sensor; 6. Main control circuit board; 7. Human-machine interaction component; 8. Lithium battery. Detailed Implementation

[0019] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0021] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] Example 1 like Figures 1-4As shown, this invention discloses a multi-mode constant-temperature bionic perineal massager, comprising a bionic thumb massage tip 1, a depth control limiting ring 2, a handheld main unit 3, a temperature control component 4, a closed-loop pressure drive component 5, a servo push rod 31, a main control circuit board 6, a human-machine interaction component 7, and a lithium battery 8. The depth control limiting ring 2 is mounted on the bionic thumb massage tip 1 to improve operational safety. The bionic thumb massage tip 1 and the handheld main unit 3 are coaxially arranged to ensure high centering, no wear, and no jamming during the telescopic movement, thus improving the stability of the massage action. The handheld main unit 3 has a circular guide mounting hole 32, and the bionic thumb massage tip 1 slides and seals with the circular guide mounting hole 32, which not only ensures the freedom of movement of the servo push rod 31 driving the bionic thumb massage tip 1 to reciprocate, but also prevents external moisture and dirt from entering the interior of the handheld main unit 3.

[0023] The servo push rod 31 is fixedly installed inside the handheld host 3. The servo push rod 31 is connected to the bionic thumb massage end 1 for transmission, providing stable power output for the reciprocating kneading, pulling and pressing actions of the bionic thumb massage end 1.

[0024] Both the temperature control component 4 and the closed-loop pressure drive component 5 are located inside the bionic thumb massage tip 1, which can be as close as possible to the human body contact area to achieve close-range accurate acquisition and real-time feedback of temperature and pressure, avoiding the problems of data lag and large errors caused by long-distance sensing.

[0025] Temperature control component 4, closed-loop pressure drive component 5, servo push rod 31, and human-machine interface component 7 are electrically connected to the main control circuit board 6, realizing fully electronic control linkage of signal acquisition, power execution, human-machine operation, and safety protection. The main control circuit board 6 and lithium battery 8 are both installed inside the handheld host 3, making the entire device compact and portable. The main control circuit board 6 integrates a multi-mode parameter storage and control module, a PID temperature control module, an over-temperature power-off protection module, and an over-pressure shutdown protection module. The human-machine interface component 7 includes a mode selection unit and a pressure fine-tuning unit.

[0026] The biomimetic thumb massage tip 1 consists of a rounded tip 12, a massage working section column 11, and a thin columnar connecting section 13, all coaxially connected from front to back. The overall design mimics the contour of a human thumb, conforming to the anatomical curvature of the perineum, providing comfortable contact without any sharp pressure. A depth control limiting ring 2 is integrally molded at the junction of the massage working section column 11 and the thin columnar connecting section 13. It boasts high structural strength, is stable and free from loosening or displacement, and can provide long-term, stable depth control protection. A transmission connecting seat 14 is embedded and fixed at the center of the end of the thin columnar connecting section 13.

[0027] The transmission connector 14 is a rigid engineering plastic embedded injection molded structure, which is highly rigid, has good insulation, and is lightweight, meeting the lightweight requirements of handheld devices. The transmission connector 14 has a coaxial internal threaded hole, and the output shaft of the servo push rod 31 has an external thread. The output shaft of the servo push rod 31 is screwed tightly into the transmission connector 14. This design not only results in small transmission gaps and precise power transmission, but also facilitates easy disassembly and assembly, allowing for convenient cleaning, disinfection, and replacement of the bionic thumb massage tip 1. This overcomes the shortcomings of traditional one-piece structures, which cannot be disassembled for cleaning and have unsanitary corners.

[0028] A circular guide mounting hole 32 is located at the front end of the handheld main unit 3. A waterproof sealing ring 33 is embedded in the inner wall of the circular guide mounting hole 32. A thin columnar connecting section 13 is coaxially inserted into the circular guide mounting hole 32. The outer wall of the thin columnar connecting section 13 is sealed to the inner wall of the waterproof sealing ring 33, effectively improving the waterproof rating of the equipment. An annular groove is provided on the inner wall of the circular guide mounting hole 32. The waterproof sealing ring 33 is a silicone O-ring that is interference-fitted into the annular groove, ensuring a stable assembly structure that is not easily dislodged.

[0029] The temperature control component 4 includes a graphene PTC heating element 41 and an NTC thermistor 42. Both the graphene PTC heating element 41 and the NTC thermistor 42 are embedded and fixed in the inner wall of the bionic thumb massage tip 1. The graphene PTC heating element 41 has the advantages of rapid heating, uniform temperature, and strong constant temperature stability. The NTC thermistor 42 can collect the surface temperature of the bionic thumb massage tip 1 in real time at the millisecond level, providing data support for the precise temperature control of the main control circuit board 6.

[0030] The closed-loop pressure drive component 5 includes a distributed thin-film pressure sensor 51, which is embedded and fixed to the inner wall of the bionic thumb massage tip 1. It can collect real-time pressure distribution data of the entire massage contact surface, providing high pressure feedback accuracy with no blind spots, and accurately reproducing the actual pressure state of the human body, avoiding pressure misjudgment caused by single-point pressure detection. The main control circuit board 6 integrates an overpressure shutdown protection module, a PID temperature control module, and an over-temperature power-off protection module. The PID temperature control module, in conjunction with the temperature control component 4, achieves precise constant temperature control. The over-temperature power-off and overpressure shutdown modules are independently deployed, providing ultimate safety assurance for equipment use. The lithium battery 8 is a DC 5V low-voltage polymer lithium battery, belonging to the ultra-low voltage level for human safety, fully conforming to the safety standards for human contact equipment, eliminating the risk of leakage and electric shock.

[0031] The human-machine interface component 7 is embedded on the outer surface of the handheld host 3. Its operating position conforms to comfortable handheld grip. The human-machine interface component 7 includes a mode selection unit and a pressure fine-tuning unit, serving as the device's only external operation entry point. It features high structural integration, simple operation, and is suitable for the easy-to-use needs of pregnant women. The main control circuit board 6 integrates a multi-mode parameter storage and control module, a PID temperature control module, an over-temperature power-off protection module, and an over-pressure shutdown protection module. Compared to the single, fixed control logic of traditional equipment, this device adopts a modular onboard integrated architecture. Each module operates independently, interacts with each other, and does not interfere with each other, resulting in a clear control logic hierarchy and higher operational stability.

[0032] The multi-mode parameter storage and control module internally stores four independent and interconnected hardware parameter configuration packages. These packages include prenatal preparation, birth canal dilation, postpartum recovery, and a custom adjustable package. These four packages are stored and accessed independently without overwriting each other, completely resolving the industry deficiency of traditional equipment that only has a single set of fixed parameters and cannot adapt to the differentiated nursing needs of different physiological stages of pregnancy and childbirth. Each hardware parameter configuration package features a linked and fixed design for temperature, pressure, push-rod sequence, and working duration. Unlike the scattered and independent adjustment modes of ordinary equipment, a one-click mode switch simultaneously locks all operating parameters, ensuring that each nursing mode is a clinically standardized, evidence-based condition with high parameter matching, strong professionalism, and good repeatability.

[0033] The mode selection unit, pressure fine-tuning unit, and multi-mode parameter storage and control module are electrically connected. The mode selection unit, as the mode switching signal input, can selectively retrieve any set of hardware parameter configuration packages within the module at the hardware level. Only one hardware parameter configuration package is active per working state, avoiding conflicts and confusion among multiple mode parameters and ensuring unique, stable, and controllable equipment operation. The pressure fine-tuning unit has a unique signal interaction mechanism, only interacting with the birth canal dilation parameter configuration package, and only granting pressure fine-tuning permissions when the birth canal dilation mode is in operation. Once the prenatal preparation parameter configuration package, postpartum repair parameter configuration package, and custom adjustable parameter configuration package are invoked, the parameters are completely fixed and locked, and do not respond to fine-tuning commands. This hardware isolation design effectively ensures that standard prenatal and postpartum care conditions are not mistakenly modified, and that fine-tuning functionality is only available for full-term birth canal dilation scenarios requiring individualized adaptation.

[0034] The PID temperature control module receives temperature parameter commands from the multi-mode parameter storage and control module and regulates the operation of temperature control component 4. The over-temperature power-off protection module and over-pressure shutdown protection module operate independently of the multi-mode parameter storage and control module, forming a comprehensive hardware safety net and a hardware linkage architecture of coordinated operation control and dual-layer safety constraints. The mode selection unit is used for hardware-level switching to retrieve the corresponding parameter configuration package, synchronously locking the overall machine operating conditions, including temperature reference, working pressure, servo push rod 31 reciprocating timing, and single-cycle working duration. The pressure fine-tuning unit interacts only with the production canal expansion parameter configuration package, using hardware-level fine-tuning to lock the output pressure of the production canal expansion mode.

[0035] The multi-mode parameter storage and control module is electrically connected to the PID temperature control module, over-temperature power-off protection module, and over-pressure shutdown protection module on the main control circuit board 6, forming a hierarchical dual-layer safety control architecture. The PID temperature control module, acting as the operating condition execution layer, accurately receives mode-specific temperature commands from the multi-mode parameter storage and control module, and adjusts the output of the temperature control component 4 in real time to achieve the corresponding constant-temperature heat therapy effect, realizing differentiated constant-temperature care for different modes. The over-temperature power-off protection module and the over-pressure shutdown protection module are independent of the operating condition control logic and are not constrained by the parameters in the hardware parameter configuration package. They continuously monitor the extreme operating state of the equipment, serving as the bottom-level safety protection layer. This dual-layer architecture design enables the equipment to possess both refined and scenario-based intelligent control capabilities and unwavering hardware extreme protection capabilities, solving the technical shortcomings of traditional equipment that either only has fixed operating conditions or only simple protection, failing to balance refinement and high safety.

[0036] Based on the aforementioned complete hardware structure, module connection relationships, parameter package linkage logic, and dedicated signal interaction mechanism, intelligent massage care is achieved throughout the entire pregnancy and postpartum period, in stages, in a standardized and individualized manner. The specific implementation conditions and corresponding technical effects are as follows: The prenatal preparation parameter configuration package enables a prenatal pretreatment mode for 35 to 37 weeks of gestation. This mode is designed to provide low-stimulation conditions suitable for sensitive soft tissues in early pregnancy, with a constant temperature of 37.5℃, a baseline pressure of 0.8N, a 3-second press-2-second release interval, and automatic shutdown after 8 minutes per session. The low-temperature, low-pressure, intermittent point-pressure hardware parameter design is specifically adapted to the physiological characteristics of perineal tightness, high sensitivity, and low tolerance in early pregnancy. It can gently stretch soft tissues, gradually build tissue elasticity, and avoid the discomfort and tension caused by strong stimulation massage. This lays the tissue foundation for the dilation of the birth canal at full term, with fixed parameters throughout the process, stable operating conditions, and high safety.

[0037] The birth canal dilation parameter configuration package enables a birth canal dilation mode from 37 weeks of gestation to the pre-labor stage. It maintains a fixed temperature of 38.5℃, a base pressure of 1.8N, a 5-second traction and 3-second relaxation sequence, and a 10-minute duration per session. This aligns with standardized dilation protocols for full-term delivery in clinical settings, effectively improving perineal collagen elasticity and reducing the risk of tearing during vaginal delivery. Furthermore, relying on a unique signal interaction architecture, it is the only system to offer a hardware-level pressure fine-tuning range of 1.0N-3.0N. This allows for real-time fine-tuning and locking of the pressure based on the individual pregnant woman's tolerance and soft tissue relaxation, achieving a perfect combination of standardized medical conditions and individualized adaptation, significantly improving the adaptability of full-term delivery care.

[0038] This postpartum recovery parameter configuration package implements a one-week postpartum recovery mode for vaginal deliveries, featuring a fixed low temperature of 37.0℃, low pressure of 0.6N, intermittent kneading and soothing sequence, and a single 12-minute recovery session. Addressing the physiological characteristics of postpartum perineal edema, delicate wounds, and poor blood circulation, this mode employs extremely low-load and gentle conditions to effectively promote perineal microcirculation, accelerate edema reduction, soothe pelvic floor muscle tension, prevent soft tissue adhesions and stiffness, and facilitate rapid postpartum recovery.

[0039] Personalized care modes are achieved through a customizable adjustable parameter configuration package. The hardware allows for autonomous adjustment of temperature, pressure, and reciprocating timing, adapting to the different body types, tolerance levels, and care preferences of various users. Meanwhile, the 16mm massage working section column 11 and the 18mm arc end 12 in the bionic thumb massage tip 1 have fixed, non-adjustable dimensions, retaining the standardized medical anatomical adaptation structure. This ensures medical safety and standardization while enabling personalized parameter customization, adapting to more specific clinical and home care scenarios.

[0040] Prenatal preparation mode: Suitable for the first perineal pretreatment at 35 to 37 weeks of pregnancy. After powering on and unlocking, the prenatal preparation parameter configuration package is retrieved through the mode selection unit of the human-machine interaction component 7. The multi-mode parameter storage and control module automatically calls the solidified linkage parameters of this group and synchronously locks the machine's operating conditions: constant temperature reference temperature 37.5℃, reference working pressure 0.8N, servo push rod 31 executes an intermittent reciprocating pressure sequence of pressing for 3 seconds and releasing for 2 seconds. The equipment automatically stops after working continuously for 8 minutes at a time.

[0041] This mode is designed for the physiological characteristics of pregnant women between 35 and 37 weeks of gestation, where the perineal soft tissue is tight, highly sensitive, and has low tolerance. It employs a low-temperature, low-pressure, intermittent, gentle working logic to gently stretch the perineal soft tissue, gradually improving tissue elasticity and establishing prenatal tissue adaptability. All operating parameters are fixed and cannot be adjusted. The entire process relies on over-temperature power-off protection and over-pressure shutdown protection modules for comprehensive safety monitoring. Combined with the mechanical limiting structure of the depth control limit ring 2, it ensures the gentleness and safety of the initial care.

[0042] Birth Canal Dilation Mode: Suitable for intensive birth canal care from 37 weeks of pregnancy to labor. After retrieving the birth canal dilation parameter configuration package through the mode selection unit, the equipment automatically fixes the following linkage parameters: constant temperature baseline 38.5℃, basic working pressure 1.8N, servo push rod 31 executes a continuous flexible stretching sequence of 5 seconds of traction and 3 seconds of relaxation, with a fixed single working time of 10 minutes. It is suitable for the birth canal dilation needs of full-term pregnant women awaiting delivery, effectively improving the relaxation and extensibility of perineal collagen tissue through continuous and regular flexible traction, reducing the risk of perineal tearing during vaginal delivery.

[0043] The only working mode that allows for pressure fine-tuning relies on the exclusive hardware signal interaction between the pressure fine-tuning unit and the birth canal dilation parameter configuration package. Users can precisely fine-tune the output pressure and lock the parameters within the 1.0N-3.0N range at the hardware level, adapting to the individual differences in pain tolerance and soft tissue relaxation among pregnant women. It takes into account both standardized midwifery conditions and individualized adaptation needs. The entire operation uses a dual-layer safety protection architecture to ensure safe use during full-term pregnancy.

[0044] Postpartum Repair Mode: Suitable for perineal repair therapy 1 to 7 days after vaginal delivery. The postpartum repair parameter configuration package is retrieved through the mode selection unit. The equipment automatically locks into low-pressure, low-temperature, and soothing repair conditions: a constant temperature baseline of 37.0℃ and a baseline working pressure of 0.6N. The servo push rod 31 executes intermittent, gentle kneading reciprocating sequences, automatically stopping after 12 minutes of operation. Addressing the physiological characteristics of the perineal wound in the week following vaginal delivery—delicate wound, tissue edema, poor blood circulation, and a tendency for scar stiffness—the low-load, gentle working condition effectively promotes local microcirculation in the perineum, accelerates edema reduction, soothes pelvic floor muscle tension, and prevents soft tissue adhesion and stiffness during healing. This achieves gentle repair of postpartum perineal soft tissue, with parameters fixed throughout the process, stable operation, and high safety.

[0045] Therefore, the present invention adopts the above-mentioned multi-mode constant temperature bionic perineal massager, which can match the differentiated nursing conditions throughout the entire pregnancy and childbirth cycle, realize one-click standardized condition switching through parameter linkage binding, and at the same time construct a dual-layer hardware safety protection architecture.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention; and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A multi-mode constant temperature bionic perineum massage instrument, characterized in that, The device includes a bionic thumb massage head, a depth control limiting ring, a handheld main unit, a temperature control component, a closed-loop pressure drive component, a servo push rod, a main control circuit board, a human-machine interface component, and a lithium battery. The depth control limiting ring is located on the bionic thumb massage head, which is coaxially arranged with the handheld main unit. The handheld main unit has a circular guide mounting hole, and the bionic thumb massage head slides and seals with the circular guide mounting hole. The servo push rod is fixedly installed inside the handheld main unit and is drivenly connected to the bionic thumb massage head. The temperature control component and the closed-loop pressure drive component are both located inside the bionic thumb massage head. The temperature control component, the closed-loop pressure drive component, the servo push rod, and the human-machine interface component are all electrically connected to the main control circuit board. The main control circuit board and the lithium battery are both installed inside the handheld main unit. The main control circuit board integrates a multi-mode parameter storage and control module, a PID temperature control module, an over-temperature power-off protection module, and an over-pressure shutdown protection module. The human-machine interface component includes a mode selection unit and a pressure fine-tuning unit.

2. The multi-mode constant temperature bionic perineal massage instrument according to claim 1, characterized in that, The multi-mode parameter storage and control module internally stores four sets of hardware parameter configuration packages that are fixed at the factory. These four sets of hardware parameter configuration packages include a prenatal preparation parameter configuration package, a birth canal dilation parameter configuration package, a postpartum repair parameter configuration package, and a custom adjustable parameter configuration package.

3. The multi-mode constant temperature bionic perineal massager according to claim 2, characterized in that, The mode selection unit, pressure fine-tuning unit, and multi-mode parameter storage and control module are electrically connected. The multi-mode parameter storage and control module is electrically connected to the PID temperature control module, over-temperature power-off protection module, and over-pressure shutdown protection module on the main control circuit board, respectively.

4. The multi-mode constant temperature bionic perineal massager according to claim 3, characterized in that, The bionic thumb massage tip is coaxially connected from front to back with an arc end, a massage working section column and a thin columnar connecting section. The depth control limiting ring is integrally formed at the junction of the massage working section column and the thin columnar connecting section. A transmission connecting seat is embedded and fixed in the center of the end of the thin columnar connecting section.

5. A multi-mode constant temperature bionic perineal massager according to claim 4, characterized in that, The transmission connector is a rigid engineering plastic embedded injection molding structure. The transmission connector has a coaxial internal threaded hole inside, and the output shaft of the servo push rod has an external thread. The output shaft of the servo push rod is screwed into the transmission connector for fastening.

6. A multi-mode constant temperature bionic perineal massager according to claim 5, characterized in that, A circular guide mounting hole is opened at the front end of the handheld main unit. A waterproof sealing ring is embedded in the inner wall of the circular guide mounting hole. A thin columnar connecting section is coaxially inserted into the circular guide mounting hole. The outer wall of the thin columnar connecting section is sealed to the inner wall of the waterproof sealing ring. An annular groove is provided on the inner wall of the circular guide mounting hole. The waterproof sealing ring is a silicone O-ring and is interference-fitted into the annular groove.

7. A multi-mode constant temperature bionic perineal massager according to claim 6, characterized in that, The temperature control components include a graphene PTC heating element and an NTC thermistor. Both the graphene PTC heating element and the NTC thermistor are embedded and fixed in the inner wall of the bionic thumb massage tip. The main control circuit board integrates a PID temperature control module and an over-temperature power-off protection module.

8. A multi-mode constant temperature bionic perineal massager according to claim 7, characterized in that, The closed-loop pressure drive component includes a distributed thin-film pressure sensor, which is embedded and fixed in the inner wall of the bionic thumb massage tip, and the main control circuit board integrates an overpressure shutdown protection module.

9. A multi-mode constant temperature bionic perineal massager according to claim 8, characterized in that, The human-computer interaction components are embedded on the outer surface of the handheld host.

10. A multi-mode constant temperature bionic perineal massager according to claim 9, characterized in that, The lithium battery is a DC5V low-voltage polymer lithium battery.

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