Device for alleviating menstrual cramps by applying heat to the abdomen and lumbar massage

Abstract

The present invention relates to a device for alleviating menstrual cramps by applying heat to the abdomen and lumbar massage, the device comprising a semi-flexible band with a temperature mechanism and a compartment for performing massages. The semi-flexible band is wide with two sections: the inner section is made of a flexible, thermal and comfortable material and the outer section is made of a more rigid material. There is a screen on the right-hand side of the outer part of the semi-flexible band that allows the temperature and massage settings of the device to be configured. There are several Peltier plates on the front part of the semi-flexible band, located inside a hollow space between the inner and outer sections, these plates allowing the temperature of the band to be changed in order to provide heat therapy. The compartment for performing the massage is on the outer rear part of the semi-flexible band, said compartment being located in a hollow space of the outer section in the central rear portion of the semi-flexible band.

Description

[0001] DEVICE FOR THE RELIEF OF MENSTRUAL CRAMPS BY APPLYING ABDOMINAL HEAT AND LUMBAR MASSAGE

[0002] TECHNICAL FIELD OF THE INVENTION

[0003] The present invention relates to the technical field of mechanics, materials science, thermotherapy, electronics, biomedical engineering and more specifically to medical device technology since it provides a device for the relief of menstrual cramps by applying abdominal heat and lumbar massage, which helps to calm the cramps, since it is composed of a semi-flexible band with a temperature mechanism and a cabin for performing massages, on the outside of the semi-flexible band there is a screen that allows the configuration of the temperature and massage of the device.

[0004] BACKGROUND OF THE INVENTION

[0005] Menstruation, or a period, is the normal vaginal bleeding that occurs as part of a woman's monthly cycle. Many women experience painful periods, also called dysmenorrhea. The pain is most often due to menstrual cramps, which are throbbing or cramping pains in the lower abdomen. You may also experience other symptoms, such as lower back pain, nausea, diarrhea, and headaches.

[0006] For many women, menstruation is accompanied by severe pain and discomfort; so much so that it can be debilitating. This is known as dysmenorrhea, which is largely caused by the contraction and relaxation of the uterine muscles, resulting in cramps in the lower abdomen.

[0007] Menstrual cramps, medically known as dysmenorrhea, are a common problem affecting many women of reproductive age. Symptoms often include abdominal pain, nausea, vomiting, fatigue, and, in some cases, headaches. This pain can significantly interfere with daily activities and the quality of life of affected women. Traditional methods for relieving menstrual pain include nonsteroidal anti-inflammatory drugs (NSAIDs), hormonal contraceptives, and home remedies such as applying heat and massage.

[0008] NSAIDs, such as ibuprofen and naproxen, are commonly prescribed to reduce inflammation and relieve pain. Hormonal contraceptives are also used to regulate the menstrual cycle and lessen the severity of cramps. Applying heat with heating pads or hot water bottles is a popular technique that provides relief by increasing blood flow and relaxing the uterine muscles. Massages to the abdominal area can also help reduce muscle tension and relieve pain.

[0009] In recent years, technology has advanced significantly in the field of women's health. Several devices have been developed that combine the properties of heat and massage to provide more effective and convenient relief from menstrual cramps. These devices offer a non-invasive, drug-free solution, thus reducing the risk of side effects associated with pharmacological treatments.

[0010] Portable heating devices are designed to maintain a constant temperature and provide gentle, consistent warmth to the abdominal area. These devices are compact, rechargeable, and in many cases, discreet, allowing women to use them during their daily activities without interruption. Massage devices for menstrual cramp relief typically use vibration or mechanical massage technology to stimulate blood circulation and relax uterine muscles. These devices are designed to be comfortable and easy to use, with multiple intensity settings to suit individual user needs.

[0011] The combination of heat and massage in a single device has proven particularly effective for relieving menstrual cramps. These integrated devices offer a holistic solution that addresses both inflammation and muscle tension, providing fast and lasting pain relief. By combining these two therapies, the therapeutic effect is enhanced, offering greater comfort and improving the quality of life for women suffering from dysmenorrhea.

[0012] The development of devices that combine heat and massage represents a significant advance in the treatment of menstrual cramps. These technologies offer an effective and safe alternative to traditional methods, significantly improving the well-being of affected women. Ongoing research and development in this field promises even more improvements and personalized options for menstrual pain relief in the future.

[0013] A prior art search was conducted for devices for the relief of menstrual cramps using abdominal heat and lumbar massage. This search revealed devices used to alleviate menstrual cramp pain, such as cutaneous electrical nerve stimulation devices. Other devices involve more elaborate technology, such as the one disclosed in patent application US 2021 / 0259911 (A1) entitled "MASSAGING APPARATUS FOR WRAPPING AROUND ABDOMEN." This abdominal massage system uses selective heat, vibration, and pressure to massage the abdominal muscles to relieve menstrual pain and cramps. The system utilizes a massage belt that can be worn around the pelvis. The massage belt has a closure, such as straps, that secures the body part around the abdomen.The massage belt is remotely controlled via a control unit or remote control to selectively generate vibrations with a vibrating element, heat with a heating element, and pressure with a pressure element. These massage components are controlled by a hands-free control unit that initiates a vibration signal, a heat signal, and a pressure signal to the massage belt. The heating element, the vibrating element, and the pressure element provide perceptible stimulation to the pelvic area at predetermined times and intensities. The control unit regulates the signals between a rest mode, a signal mode, a timer, and a speed control.

[0014] Another system used is that shown in patent application US 2021 / 0015701 (A1) "SYSTEMS AND METHODS FOR PROVIDING A MENSTRUAL CRAMP RELIEF BELT," which describes an abdominal belt configured to apply heat, vibration, and / or pressure to a user's lower abdomen to relieve pain and discomfort (e.g., due to premenstrual syndrome). In some cases, the abdominal belt has a first end, a second end, and an abdominal pad disposed at the second end of the belt. In some cases, the abdominal pad includes one or more heating elements and / or vibrating mechanisms. In fact, in some cases, the pad includes two vibrating mechanisms configured to be positioned over the user's ovaries when the belt is worn.In some cases, the abdominal pad also defines an opening through which the first end of the belt can be extended. Additionally, the belt includes a coupling mechanism that connects the first end to a central portion of the belt when the belt is extended through the opening and the first end is folded over the central portion. Other implementations are described.

[0015] The devices and systems mentioned only focus on relieving lower abdominal pain, leaving aside lower back pain, and their control and power supply systems are external to the belts, which hinders their mobility.

[0016] Therefore, the need arises to develop a device that provides relief through a semi-flexible band with a temperature mechanism to apply heat to the lower abdomen and a cabin to perform massages on the lower back.

[0017] OBJECT OF THE INVENTION

[0018] The present invention aims to provide a device for the relief of menstrual cramps by applying abdominal heat and lumbar massage, which solves the aforementioned problems.

[0019] The present invention aims to provide a device for the relief of menstrual cramps by applying abdominal heat and lumbar massage, composed of a semi-flexible band with a temperature mechanism and a cabin for performing massages. The semi-flexible band is wide with two sections; the inner section is made of a flexible, thermal, and comfortable material, and the outer section is made of a more rigid material. On the outer part of the semi-flexible band, on the right side, there is a screen that allows the temperature and massage settings of the device. Also, on the front of the semi-flexible band, within the hollow space between the inner and outer sections, there are several Peltier plates that allow the temperature of the band to change in order to perform the heat therapy.On the outer rear of the semi-flexible belt is the massage cabin; this cabin is located in a hollow space of the outer section in the central rear of the semi-flexible belt.

[0020] BRIEF DESCRIPTION OF THE FIGURES

[0021] The characteristic details of this novel device for the relief of menstrual cramps by applying abdominal heat and lumbar massage are clearly shown in the following description and accompanying figures, as well as an illustration thereof, using the same reference symbols to indicate the parts shown. However, these figures are shown by way of example and should not be considered limiting to the present invention.

[0022] Figure 1 shows perspective views of the device for relieving menstrual cramps by applying abdominal heat and lumbar massage, as worn by the user. Figure 2 shows a perspective view of the device for relieving menstrual cramps by applying abdominal heat and lumbar massage.

[0023] Figure 3 shows an exploded perspective view of the parts of the device for the relief of menstrual cramps by applying abdominal heat and lumbar massage.

[0024] Figure 4 shows a perspective view with the transparency of the device for the relief of menstrual cramps by applying abdominal heat and lumbar massage, showing the detail of the thermoelectric devices.

[0025] Figure 5 shows a perspective view of the padded cover and massage chamber of the device for relieving menstrual cramps by applying abdominal heat and lumbar massage. Figure 6 shows a detailed view of the components of the adjustment and fastening strap of the device for relieving menstrual cramps by applying abdominal heat and lumbar massage.

[0026] Figure 7 shows a perspective view that shows details of the interior of the massage cabin of the device for the relief of menstrual cramps by applying abdominal heat and lumbar massage, and the space where it is installed.

[0027] Figure 8 shows a detailed perspective view of the movement mechanism of the massage roller of the device for the relief of menstrual cramps by applying abdominal heat and lumbar massage.

[0028] Figures 9 to 12 show detailed views of the movement mechanism of the massage rollers of the device for the relief of menstrual cramps by applying abdominal heat and lumbar massage.

[0029] Figures 13 to 17 show detailed perspective views of the massage rollers of the device for the relief of menstrual cramps by applying abdominal heat and lumbar massage.

[0030] Figure 18 shows a detailed perspective view of the circular support of the device for the relief of menstrual cramps by applying abdominal heat and lumbar massage, where the rectangular perforation is shown.

[0031] DETAILED DESCRIPTION OF THE INVENTION

[0032] For a better understanding of the present invention, the parts that make up the temperature and massage device for the relief of menstrual cramps, which is the subject of the present invention, are listed below:

[0033] 1. Band 2. Padded cover

[0034] 3. Massage cabin 4. Control module

[0035] 5. Loading Port

[0036] 6. Thermoelectric devices 7. Screen

[0037] 8. Empty space

[0038] 9. Posterior end

[0039] 10. Front wing

[0040] 11. Adjustment and fastening band 12. Rectangular cut

[0041] 13. Housing

[0042] 14. Worm gear

[0043] 15. Guides

[0044] 16. Rectangular bases

[0045] 17. Rectangular support

[0046] 18. Rectangular perforation 19. Circular support

[0047] 20. Central axis

[0048] 21. First massage roller 22. Base

[0049] 23. Rectangular support

[0050] 24. Circular drilling

[0051] 25. Lower base

[0052] 26. Second massage roller and 27. Cylindrical body

[0053] 28. Acupressure points

[0054] 29. Circular massage base

[0055] 30. Engine

[0056] 31. Balero

[0057] 32. Circular base

[0058] 33. Battery

[0059] 34. Rigid extension

[0060] 35. Semi-curved base 36. Conductive plates

[0061] 37. Second rigid extensions

[0062] 38. Semi-curved plate

[0063] With reference to the figures, the device for the relief of menstrual cramps by applying abdominal heat and lumbar massage of the present invention is made up of a band (1) which is preferably semi-flexible and has a temperature mechanism on its front and a cabin for performing massages (3) on its back. The band (1) is of wide dimensions such that it allows covering the abdomen and the lower back. It is made up of two sections, one called the inner section and the other called the outer section. A space is located between both sections. The inner section is made of a flexible, thermal and ergonomic material, since it is the one that is in contact with the user, and the outer section is made of a more rigid material.

[0064] The temperature mechanism and the massage cabin (3) are managed by a control module (4) located at the rear of the belt (1) inside the massage cabin (3). This control module (4) is operated by a screen (7) integrated into a frame with buttons and a charging port (5), preferably located on either side of the outer part of the belt (1). This screen (7) allows for the configuration of the device's temperature and massage settings. The control module (4) also has a wireless communication unit (not shown) that allows wireless connection to a mobile device via an application to configure the temperature and massage settings. The wireless communication unit (not shown) uses Bluetooth, Wi-Fi (Wireless Fidelity), or UWB (Ultra Wide Band).In the space between the two sections of the belt (1) is the wiring that connects the control module (4) to the display and the other electronic components of the device, as well as to a rechargeable battery (not shown) that powers the control module (4), the display (7), and a plurality of thermoelectric devices (6), which may be Peltier plates, micro heat pumps, advanced thermoelectric modules (TECs), dual thermoelectric USB devices, or a combination thereof. As shown in Figure 4, the plurality of thermoelectric devices (6) are located on the front of the belt (1) within the hollow space between the inner and outer sections; the thermoelectric devices (6) allow the temperature of the belt (1) to change for heat and cold therapy.

[0065] The band (1) is divided on one of its sides to allow the user to place the device for the relief of menstrual cramps by applying abdominal heat and lumbar massage, the reason for the present invention, as can be seen in figure 6, the band (1) has two ends, one in each section of the band (1), at the rear end (9) there is an adjustment and fastening band (11), which is joined at one of its ends, said band can be made of a material such as sailcloth;At the front end (10) of the band (1), on one side of it there is a rectangular cut (12) that crosses the band (1) completely. This rectangular cut (12) serves to pass and hold the end of the adjustment and fastening band (11) that is not attached to the rear end (9). This configuration allows the user to adjust and accommodate the device for the relief of menstrual cramps by applying abdominal heat and lumbar massage, the reason for the present invention.

[0066] Referring to figures 7 and 8, on the outer rear of the belt (1) is the massage cabin (3), this cabin is located in a hollow space (8) of the outer section in the central rear of the belt (1) and is made up of a hollow rectangular housing (13) with rounded outer edges, which houses a first massage roller (21) that can be interchanged with a second massage roller (26).At the top of the massage cabin (3) there is a movement mechanism for the massage rollers (21, 26) provided with a worm gear (14) with three guides (15), an upper guide (15) located to one side of the worm gear (14), both held at their ends by two rectangular bases (16) located at the upper ends of the inside of the housing (13), likewise at the bottom of the massage cabin (3), there are two lower guides (15) held at their ends by two other rectangular bases (16) located at the lower ends of the inside of the housing (13); these lower guides (15) serve as a guide for a rectangular support (23).For the movement of the worm gear (14) there is a motor (not illustrated) in the widest space of the housing (13), within the same space are the control module (4) and the rechargeable battery (not shown), from which the wiring for the control and power supply of the thermoelectric devices (6) and the display (7) comes out.

[0067] On the worm screw (14) and the upper guide (15) is installed a rectangular support (17) with perforations that moves along the worm screw (14) to move the massage rollers (21, 26); the front face of said rectangular support (17) protrudes from the upper guide (15), on the front face of the protruding part there is a rectangular perforation (18) of the same size as a circular support (19) of a central shaft (20) of the first massage roller (21) or the second massage roller (26), as shown in figures 9 to 12. From the lower face of the rectangular support (17) protrudes a U-shaped base (22), which supports the circular support (19) of the central axis (20), which is provided with a rectangular perforation (39) into which the U-shaped base (22) fits, as shown in figure 18.

[0068] At the bottom of the housing (13), where the pair of lower guides (15) are located, held by the two rectangular bases (16) at their ends, a second rectangular support (23) is placed on these rectangular bases (16). This support has perforations across its width to fit onto the guides (15). The second rectangular support (23) has a projection that extends from the housing (13). On the upper face of this projection, a circular perforation (24) is placed, which coincides with the rectangular perforation (18) of the rectangular support (17). This circular perforation (24) is the same diameter as that of a lower base (25) of the shaft of the massage roller (21) or of the massage roller (26).Inside the circular perforation (24) there is a magnet, as well as on the underside of the lower base (25). This configuration allows the magnet in the circular perforation (24) to be joined with the magnet on the underside of the lower base (25).

[0069] To place the first massage roller (21) or the second massage roller (26), the circular support (19) of the central shaft (20) must be inserted into the top of the circular perforation (18) and the first massage roller (21) or second massage roller (26) must be slid in until it is held in the U-shaped base (22) and the lower base (25) has entered the circular perforation (24).

[0070] As can be seen in Figures 13, there is a pair of massage rollers (21 and 26), which are interchangeable so that the user can decide which one to use. The first massage roller (21) consists of a cylindrical body (27) provided with acupressure points (28) around its outer face. Each acupressure point (28) has a rounded top for greater user comfort. In addition, around the cylindrical body (27), distributed on the top and bottom of it, there are four circular massage bases (29) provided with spheres around their upper face. Each of the circular massage bases (29) has a shaft in its center, connected to a motor (30), which allows the circular massage base (29) to rotate and perform a circular massage while the massage roller (21) rotates.

[0071] Referring to figures 11, 13 to 17, on the inner part of the upper and lower ends of the cylindrical body (27) there are bearings (31), which allow the first massage roller (21) or the second massage roller (26) to rotate while the central shaft (20) slides on the worm gear (14) and the upper and lower guides (15). The central shaft (20) passes completely through the first massage roller (21) or the second massage roller (26) and through the center of each bearing (31).

[0072] On the lower inner part of the first massage roller (21) or the second massage roller (26), there is a circular base (32), which is fixed to the central axis (20) and to the inner walls of the cylindrical body (27). On this base is a rechargeable battery (33). On the top of the battery (33) are the connections to the positive and negative poles. From each of these comes the rigid metal extension (34) to a semi-curved rectangular base (35), which is provided with a pair of conductive plates (36). The upper plate is connected to the positive pole of the battery and the lower one to the negative pole.Behind the semi-curved base (35) protrudes a second pair of rigid extensions (37) that connect to a second semi-curved base (35) above the middle part of the cylindrical body (27) of the first massage roller (21) or the second massage roller (26). The purpose of these conductive plates (36) is to drive the motor (30) of each circular massage base (29). Each motor (30) has a semi-curved plate (38) with a curve opposite to the semi-curved base (35) and is provided with a pair of conductive plates (36), which are aligned with each semi-curved base (35). This configuration allows that every time the semi-curved plate (38) of the motor (30) makes contact with the semi-curved base (35), the motor (30) is turned on to rotate the circular massage bases (29).

[0073] The second massage roller (26), unlike the first massage roller (21), around its cylindrical body (27), has only circular massage bases (29), eight in total, which are distributed along the cylindrical body (27). Each one is connected by a central shaft to a motor (30), which in turn is connected to a semi-curved plate (38) with conductive plates (36). Each pair of circular massage bases (29) is turned on when the second massage roller (26) rotates and the first and second semi-curved bases (35) make contact with the semi-curved plate (38).

[0074] For greater user comfort and to avoid injuries when activating the first massage roller (21) or the second massage roller (26), there is a padded cover (2) that completely covers the massage cabin (3).

[0075] In view of the foregoing, it is reiterated that the scope of the present invention shall not be limited by the specific embodiments described, and it shall be understood that variations may be made in several respects. Such variations shall not be considered a departure from the spirit and scope of the invention, and all such modifications may be obvious to a person skilled in the art and shall be included within the scope of the following claims.

Claims

CLAIMS 1. A device for the relief of menstrual cramps by applying abdominal heat and lumbar massage, characterized in that it comprises: a band (1) formed by two sections, one called the inner section and the other the outer section, a space being located between both sections; the band (1) has a temperature mechanism on its front and a massage cabin (3) on its back; a control module (4) located on the back of the band (1) and on the inside of the massage cabin (3), said control module (4) allows management of the temperature mechanism and the massage cabin (3), and is powered by a rechargeable battery and connected to a wireless communication unit, said battery being located in the wider space of the housing (13), within the same space is the control module (4);a screen (7) integrated into a frame with buttons and a charging port (5), located on the outside of the rear section of the belt (1), which allows setting the temperature and massage of the device, the screen (7) is connected to the control module (4); a plurality of thermoelectric devices (6) located on the front of the belt (1) within the space between the inner and outer sections, which allow changing the temperature of the belt (1);The massage cabin (3) is located in a hollow space (8) of the outer section at the rear center of the semi-flexible belt (1), consisting of a housing (13) which houses a first roller (21) or a second interchangeable massage roller (26), at the top of the massage cabin there is a movement mechanism for the massage rollers (21, 26) by means of a motor installed in the wide space of the housing (13) within the same space where the control module (4) is located; and a padded cover (2) which completely covers the massage cabin (3).

2. The device according to claim 1, further characterized in that: the band (1) is semi-flexible of a dimension such that it allows covering the abdomen and the lower back.

3. The device according to claim 1, further characterized in that: the inner section of the band (1) is made of a flexible, thermal and ergonomic material; and, the outer section is made of a more rigid material.

4. The device according to claim 1, further characterized in that: in the space between both sections of the band (1) is located the wiring that connects the control module (4) with the display (7) and with the other electronic components of the device, as well as the rechargeable battery that powers the control module (4), the display (7) and the thermoelectric devices (6).

5. The device according to claim 1, further characterized in that: the wireless communication unit is by means of Bluetooth, WiFi or UWB.

6. The device according to claim 1, further characterized in that: the thermoelectric devices (6) are Peltier plates, micro heat pumps, advanced thermoelectric modules (TECs), dual thermoelectric USB devices or a combination thereof.

7. The device according to claim 1, further characterized in that: the band (1) is divided on one of its sides forming two ends in each section of the band (1), a rear end (9) and a front end (10).

8. The device according to claim 7, further characterized in that: at the rear end (9) there is It has an adjustment and fastening band (11), which is joined at one of its ends; and, at the other front end (10) on one side of this there is a rectangular cut (12) which serves to pass and hold the adjustment and fastening band (11) the end of the adjustment and fastening band (11) which is not joined to the rear end (9).

9. The device according to claim 8, further characterized in that: the adjustment and fastening band (11) is made of a Velcro material that allows the device to be adjusted and accommodated on the user.

10. The device according to claim 1, further characterized in that: the housing (13) is rectangular with rounded outer edges.

11. The device according to claim 1, further characterized in that: the Bluetooth module of the control module (4) allows wireless connection with a mobile device to wirelessly configure the temperature and massage of the device.

12. The device according to claim 1, further characterized in that: the movement mechanism for the massage rollers (21, 26) located in the housing (13), is provided in its upper part with a worm gear (14) with three guides (15), an upper guide (15) located to one side of the worm gear (14), both held at their ends by two rectangular bases (16) located at the upper ends of the interior of the housing (13); in its lower part of the massage cabin (3), there are two lower guides (15) held at their ends by two other rectangular bases (16) located at the lower ends of the interior of the housing (13); These lower guides (15) serve as a guide for a rectangular support (23).

13. The device according to claim 12, further characterized in that: on the worm screw (14) and the upper guide (15) there is a rectangular support (17) with perforations which moves along the worm screw (14) in order to move the massage rollers (21, 26).

14. The device according to claim 13, further characterized in that: the front face of the rectangular support (17) protrudes from the upper guide (15); on its protruding front face there is a rectangular perforation (18) of the same size as a circular support (19) of a central shaft (20) of the first massage roller (21) or of the second massage roller (26); and, on its lower face there protrudes a U-shaped base (22) which supports the circular support (19) of the central shaft (20), which is provided with a rectangular perforation (39) into which the U-shaped base (22) fits.

15. The device according to claim 12, further characterized in that: the movement mechanism for the massage rollers (21, 26) in the lower part of the housing (13) has the pair of lower guides (15) held by two rectangular bases (16) at their ends, on which there is a second rectangular support (23).

16. The device according to claim 15, further characterized in that: the second rectangular support (23) has perforations across its width through which the lower guides (15) pass; the second rectangular support (23) has a projection that protrudes from the housing (13); on the upper face of this projection, a circular perforation (24) is placed which coincides with the rectangular perforation (18) of the rectangular support (17); said circular perforation (24) is of the same diameter as that of a lower base (25) of the shaft of the massage roller (21) or of the massage roller (26).

17. The device according to claim 1, further characterized in that: the first roller (21) is interchangeable with a second massage roller (26), and they are installed on the circular support (19) at the top of the circular perforation (18) by holding it in the "U" shaped base (22) and the lower base (25) in its circular perforation (24) by means of magnets located in the lower base (25) and the circular perforation (24).

18. The device according to claim 1, further characterized in that: the first massage roller (21) and the second massage roller (26) comprise a cylindrical body (27) with circular massage bases (29) provided with spheres around their upper face distributed around the cylindrical body (27).

19. The device according to claim 18, further characterized in that: the first massage roller (21) is provided in the cylindrical body (27) with acupressure points (28) around its outer face.

20. The device according to claim 19, further characterized in that: each acupressure point (28) has a rounded top.

21. The device according to claim 18, further characterized in that: each of the circular massage bases (29) has a shaft in its center connected to a motor (30), which allows the circular massage base (29) to rotate and perform a circular massage while the roller rotates.

22. The device according to claim 18, further characterized in that: bearings are located in the inner part of the upper and lower ends of the cylindrical body (27). (31) , which allow the first massage roller (21) or the second massage roller (26) to rotate while the central shaft (20) slides over the worm gear (14) and the upper and lower guides (15).

23. The device according to claim 22, further characterized in that: the central shaft (20) passes completely through the first massage roller (21) or the second massage roller (26) and passes through the center of each bearing (31).

24. The device according to claim 14, further characterized in that: in the lower inner part of the first massage roller (21) or the second massage roller (26) there is a circular base (32), which is fixed to the central shaft (20) and to the inner walls of the cylindrical body (27).

25. The device according to claim 24, further characterized in that: on the circular base (32) there is a rechargeable battery (33), and on the top of it are the connections with the positive and negative poles, from which rigid metallic extensions (34) extend towards a semi-curved base (35) with a rectangular shape, which is provided with a pair of conductive plates (36).

26. The device according to claim 25, further characterized in that: behind the semi-curved base (35) protrudes a second pair of rigid extensions (37) which connect to a second semi-curved base (35) above the middle part of the cylindrical body (27).

27. The device according to claim 26, further characterized in that: the conductive plates (36) drive the motor (30) of each circular massage base (29), given that each motor (30) has a semi-curved plate (38) with an opposite curve to the semi-curved base (35) and is provided with a pair of conductive plates (36) and these are aligned to each semi-curved base (35).

28. The device according to claim 15, further characterized in that: the first massage roller (21) has four circular massage bases (29) and the second massage roller (26) has eight circular massage bases (29), distributed along the cylindrical body (27).

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