A perineal massager for pregnant and postpartum women

Abstract

This invention discloses a perineal massager for pregnant and postpartum women, belonging to the field of childbirth and obstetrics technology. The perineal massager includes a hand handle and a massage ball head. A mounting box is located at the top of the hand handle, and a drive assembly for moving the massage ball head is installed inside the mounting box. The drive assembly penetrates the front sidewall of the mounting box and is detachably connected to the massage ball head. A U-shaped through hole matching the movement trajectory of the massage ball head is formed on the front sidewall of the mounting box. The drive assembly also includes a massage intensity adjustment component for controlling the massage intensity of the massage ball head on the vaginal wall of the pregnant woman. Guided by the U-shaped drive frame, the massage ball head can move in a reciprocating U-shape in the perineum of the pregnant woman. Simultaneously, the eccentric column allows the massage ball head to move left and right, thereby pressing the vaginal wall and improving the massage effect. Furthermore, the perineal massager allows for adjustment of the massage intensity, and the massage ball head is detachable for easy cleaning and replacement.

Description

Technical Field

[0001] This invention relates to the field of childbirth assistance technology, and in particular to a perineal massage device for pregnant and postpartum women. Background Technology

[0002] Perineal laceration is a complication of vaginal delivery. Severe lacerations are often associated with an increased risk of postpartum pelvic floor muscle damage, fecal and urinary incontinence, postpartum pain, and sexual dysfunction. Given the fear and discomfort mothers experience during childbirth, effective perineal protection is particularly urgent and important. Perineal massage, as an effective method of perineal protection, can increase the elasticity of the vaginal opening muscles, reducing perineal tears during childbirth and persistent postpartum perineal pain.

[0003] Perineal massage during labor, especially during the second stage of labor, involves obstetric staff wearing sterile gloves inserting two fingers into the mother's vagina and applying gentle, downward (towards the rectum) pressure from one side of the vagina to the other. This massage works by improving the elasticity of the perineal tissues, increasing local blood flow, and relieving pain during labor, thus providing perineal protection. Olive oil is used as the massage oil; apply it to the perineal area with your index finger to thoroughly moisten the tissue. Gently insert your fingers into the vagina, about two finger-widths (3-4 cm) (avoiding the cervix), and apply gentle downward pressure towards the rectum, maintaining the stretch in the perineal muscles for 2-3 minutes before relaxing. Then, gently press and expand the tissues on both sides of the vaginal wall, first from 3 o'clock to 9 o'clock, and then from 9 o'clock to 3 o'clock, pressing back and forth for 2-3 minutes. Follow the "U" shaped path to stretch the perineum. Maintaining this stretch helps expand and strengthen the tissues and vaginal muscles. Finally, gently massage the perineal area with your thumb and forefinger for about 1-2 minutes. Rinse off any remaining massage oil with warm water. Massage pressure: A slight tingling or burning sensation is appropriate. Current clinical experience suggests that perineal massage starting from 34-35 weeks of pregnancy, twice a day for 6-8 minutes each time, continuing until delivery, can also effectively protect the perineum.

[0004] However, current manual massage methods are inefficient, and some pregnant women find it difficult to massage themselves due to physical reasons, requiring assistance from standardized training staff at the clinic. This necessitates daily hospital visits for pregnant women before delivery, causing significant inconvenience. During the second stage of labor, midwives need to perform repetitive massages for extended periods, which can easily lead to passive muscle damage in their hands, causing tendinitis, and potentially even occupational injuries such as myasthenia gravis and muscle atrophy. Furthermore, given the shortage of midwives, to ensure the safe delivery of pregnant women, midwives must prioritize childbirth and may not have the time or energy to provide professional perineal massage to every pregnant woman.

[0005] Patent application CN115337192A discloses an exercise device for pregnant women in late pregnancy, which can massage the muscles of the vaginal opening and perineum. However, the main body of this exercise device is a support bed, which is large and can only be used in a fixed position. Pregnant women cannot take it home to use themselves, and it does not solve the inconvenience caused by daily trips to the hospital. Moreover, the massage head of this exercise device can only move back and forth in a U-shape on the pregnant woman's perineum, and cannot perform pressing operations, nor can the pressing pressure be adjusted. Utility model patent CN219184837U discloses a perineal massager specifically for obstetrics. Although this massager is easy to carry, it can only perform perineal massage through a ball-shaped massage head and cannot be moved around independently, still requiring manual operation by the pregnant woman, thus still causing considerable inconvenience. Summary of the Invention

[0006] To address the aforementioned problems, this invention aims to provide a perineal massager for pregnant and postpartum women. Guided by a U-shaped drive frame, the massage ball head can reciprocate in a U-shape over the pregnant woman's perineum. Simultaneously, the eccentric column allows the massage ball head to move left and right, thereby pressing the vaginal wall and enhancing the massage effect. Furthermore, the massager allows for adjustable massage intensity, and the massage ball head is detachable for easy cleaning and replacement.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A perineal massager for pregnant and postpartum women includes a hand handle and a massage ball head. The top of the hand handle is provided with a mounting box, and a drive assembly for driving the massage ball head to move is installed inside the mounting box. The drive assembly passes through the front side wall of the mounting box and is connected to the massage ball head. A U-shaped through hole matching the movement trajectory of the massage ball head is opened on the front side wall of the mounting box.

[0008] Furthermore, the drive assembly includes a drive shaft rotatably mounted in the mounting box, and the drive shaft moves along a U-shaped trajectory within the mounting box. An eccentric column is sleeved on the front end of the drive shaft, and an inner sleeve rod is slidably provided on the outer side wall of the eccentric column. An outer sleeve is slidably connected to the end of the inner sleeve rod, and the outer sleeve slides synchronously along a U-shape with the drive shaft. The massage ball head is connected to the inner sleeve rod.

[0009] Furthermore, a U-shaped drive frame is installed inside the mounting box, and a U-shaped rack is fixed on the inner side of the U-shaped drive frame. A gear that meshes with the U-shaped rack is sleeved on the drive shaft. A mounting plate is slidably connected along the U-shape on the rear side wall of the mounting box, and a drive motor is mounted on the mounting plate. The output shaft of the drive motor is connected to the drive shaft.

[0010] Furthermore, a roller is provided on the outer side of the U-shaped drive frame, and a first support shaft is rotatably sleeved at the center of the roller, the first support shaft being fixedly connected to the mounting plate.

[0011] Furthermore, a third connecting rod is fixedly provided on the outer wall of the outer sleeve, and the end of the third connecting rod away from the outer sleeve is also fixedly connected to the mounting plate.

[0012] Furthermore, a first connecting rod is vertically fixed on the inner sleeve rod, the first connecting rod passes through the U-shaped through hole, and the width of the U-shaped through hole is greater than the diameter of the first connecting rod. A second connecting rod is fixed on the massage ball head, and the first connecting rod is connected to the second connecting rod.

[0013] Furthermore, the center of the first connecting rod is provided with a square groove along the axial direction that matches the end of the second connecting rod, and a plate is provided on each of the left and right sides of the first connecting rod in the radial direction. A pressure plate is fixed at the end of the plate outside the first connecting rod, and a first spring is provided between the pressure plate and the first connecting rod. The ends of the two plates inside the first connecting rod are provided with square holes that match the square groove.

[0014] Furthermore, a massage intensity adjustment component is provided between the outer sleeve and the eccentric column for adjusting the left and right movement range of the first connecting rod. The massage intensity adjustment component includes a ring plate movably sleeved on the outer sleeve of the inner sleeve rod, and multiple sets of second springs are provided between the ring plate and the first connecting rod. A drive groove is formed around the circumference of the eccentric column, and an arc-shaped sliding plate is slidably disposed in the drive groove. The sliding plate is connected to the inner sleeve rod by a third spring.

[0015] Furthermore, an electric telescopic rod is installed inside the outer sleeve, and a support plate is fixedly provided at the output end of the electric telescopic rod. Multiple columns are symmetrically fixed on the support plate, and the columns slide through the outer sleeve. The ring plate is connected to the columns.

[0016] Furthermore, the end of the inner sleeve rod is provided with a sealing plug, and a sealed main air chamber is formed between the sealing plug and the outer sleeve. The surface of the massage ball head is provided with multiple elastic protrusions, and a secondary air chamber is formed between the elastic protrusions and the massage ball head. The main air chamber and the secondary air chamber are connected by an air passage.

[0017] The beneficial effects of this invention are: compared with the prior art, the improvement of this invention lies in that... 1. The perineal massager of this invention, through the design of a U-shaped drive frame, ensures that the drive shaft moves along a U-shaped trajectory within the mounting box. This causes the massage ball head to move along a U-shape within the perineal area of ​​the pregnant woman's vagina. Simultaneously, the eccentric column connected to the drive shaft drives the inner sleeve rod to move left and right along the axial direction of the outer sleeve, thereby reciprocatingly pressing the vaginal wall of the pregnant woman, achieving a massage effect. Therefore, this perineal massager, as a whole, can both provide a pressing massage to the vaginal wall of the pregnant woman and move along a U-shape within the vagina, achieving an effective perineal massage effect.

[0018] 2. The perineal massager of this invention has a compact structure, can be held in the hand, and is easy to carry. Pregnant women do not need to go to the hospital every day for perineal massage. They can operate it at home by themselves. Moreover, the massage ball head is driven by a drive motor to massage the perineum without manual operation, which is convenient for pregnant women to operate and saves energy.

[0019] 3. The perineal massager massage ball head in this invention is detachably connected to the drive component in the installation box, which facilitates the disassembly and assembly of the massage ball head. After each use, the massage ball head can be disassembled for easy cleaning and replacement.

[0020] 4. The perineal massager of the present invention has a massage intensity adjustment component between the outer sleeve and the eccentric column for adjusting the left and right movement range of the first connecting rod. The length of the electric telescopic rod is controlled by the gear adjustment control switch of the electric telescopic rod, thereby adjusting the position of the ring plate and the second spring. When the inner sleeve rod moves towards the outer sleeve, it will squeeze the second spring, thereby reducing the movement range between the first connecting rod and the massage ball head, which plays the role of adjusting the massage intensity of the massage ball head on the vaginal wall. Pregnant women can choose a suitable massage intensity level.

[0021] 5. The perineal massager of the present invention has a sealing plug at the end of the inner sleeve rod, and a sealed main air chamber is formed between the sealing plug and the outer sleeve. The surface of the massage ball head is provided with multiple elastic protrusions, and a secondary air chamber is formed between the elastic protrusions and the massage ball head. The main air chamber and the secondary air chamber are connected by an air passage, so that while the massage ball head massages the vaginal wall of the pregnant woman, the reciprocating protrusions of the elastic protrusions can also massage the vaginal wall of the pregnant woman, thus improving the massage effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the perineal massager in Embodiment 1 of the present invention.

[0023] Figure 2 This is a top view of the internal structure of the mounting box in Embodiment 1 of the present invention.

[0024] Figure 3 For the present invention Figure 2 Cross-sectional view along the AA direction.

[0025] Figure 4 For the present invention Figure 2 Cross-sectional view along the BB direction.

[0026] Figure 5 This is a side view of the eccentric column and the first connecting rod structure in Embodiment 1 of the present invention.

[0027] Figure 6 For the present invention Figure 2 A schematic diagram showing the positional relationship of the first connecting rod after the eccentric column rotates half a turn.

[0028] Figure 7 This is a schematic diagram showing the connection relationship between the first connecting rod and the second connecting rod in Embodiment 2 of the present invention.

[0029] Figure 8 This is a top view of the first connecting rod structure in Embodiment 2 of the present invention.

[0030] Figure 9 This is a side view showing the positional relationship between the insert plate and the first connecting rod in Embodiment 2 of the present invention.

[0031] Figure 10 This is a top view of the internal structure of the massage intensity adjustment component in Embodiment 3 of the present invention.

[0032] Figure 11 This is a side view of the internal structure of the massage intensity adjustment component in Embodiment 3 of the present invention.

[0033] Figure 12 This is a side view of the outer sleeve structure in Embodiment 3 of the present invention.

[0034] Figure 13 This is a side view of the ring plate structure in Embodiment 3 of the present invention.

[0035] Figure 14 This is a schematic diagram showing the positional relationship between the main air chamber, secondary air chamber, and airway in Embodiment 4 of the present invention.

[0036] Wherein: 1-Handle, 2-Mounting box, 201-U-shaped through hole, 202-First U-shaped slide groove, 203-Third U-shaped slide groove, 3-Massage ball head, 301-Elastic protrusion, 4-U-shaped drive frame, 5-First sliding block, 6-Mounting plate, 7-Drive motor, 8-U-shaped rack, 9-Drive shaft, 10-Gear, 11-Second U-shaped slide groove, 12-Roller, 13-First support shaft, 14-Eccentric column, 1401-Drive groove, 15-Inner sleeve rod, 16-Outer sleeve, 1601-Second sliding groove, 17- First connecting rod, 1701-square groove, 1702-first sliding groove, 18-second connecting rod, 19-third connecting rod, 20-insertion plate, 2001-square hole, 21-pressure plate, 22-first spring, 23-electric telescopic rod, 24-support plate, 25-column, 26-ring plate, 27-second spring, 28-slide plate, 29-third spring, 30-sealing plug, 31-main air chamber, 32-first air passage, 33-second air passage, 34-third air passage, 35-main air passage, 36-secondary air chamber, 37-secondary air passage. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments. Example 1

[0038] See attached document Figure 1-6 The illustration shows a perineal massager for pregnant and postpartum women, including a hand handle 1 and a massage ball head 3. A mounting box 2 is fixed to the top of the hand handle 1. A drive component for driving the massage ball head 3 is installed inside the mounting box 2. The drive component passes through the front side wall of the mounting box 2, and one end of the drive component connected to the massage ball head 3 passes through the mounting box 2. A U-shaped through hole 201 matching the movement trajectory of the massage ball head 3 is provided on the front side wall of the mounting box 2.

[0039] Specifically, the drive assembly includes a U-shaped drive frame 4 fixedly installed inside the mounting box 2. A first U-shaped groove 202 is provided on the rear side wall of the mounting box 2. A first sliding block 5 is slidably connected in the first U-shaped groove 202. A mounting plate 6 is fixedly provided on the front side of the first sliding block 5. A drive motor 7 is mounted on the mounting plate 6. A U-shaped rack 8 is fixedly provided on the inner side of the U-shaped drive frame 4. A drive shaft 9 is connected to the output shaft of the drive motor 7. A gear 10 matching the U-shaped rack 8 is fixedly sleeved on the outside of the drive shaft 9. A second U-shaped groove 11 is provided on the outer side of the U-shaped drive frame 4. A roller 12 is rolled in the second U-shaped groove 11. A first support shaft 13 is rotatably sleeved at the center of the roller 12. The end of the first support shaft 13 away from the roller 12 is also fixedly connected to the mounting plate 6. When the drive motor 7 starts, it drives the drive shaft 9 and gear 10 to rotate. When the gear 10 rotates, it moves along the path of the U-shaped rack 8, thereby driving the drive motor 7 and the mounting plate 6 as a whole to move along the path of the U-shaped rack 8. The sliding connection between the first sliding block 5 and the rear side wall of the mounting box 2 ensures the stable movement of the entire mounting plate 6. The cooperation between the roller 12 and the second U-shaped slide groove 11 limits the position of the gear 10 and prevents the gear 10 from disengaging from the U-shaped rack 8. Finally, the overall structure formed by the first sliding block 5, mounting plate 6, drive motor 7, drive shaft 9, gear 10, roller 12, and first support shaft 13 moves along the path of the U-shaped rack 8. At the same time, the drive shaft 9 can also rotate.

[0040] An eccentric column 14 is fixedly sleeved on the outer side of the drive shaft 9 away from the drive motor 7. The eccentric column 14 is located on the front side of the U-shaped drive frame 4. A drive groove 1401 is formed around the outer periphery of the eccentric column 14. An inner sleeve rod 15 is slidably connected in the drive groove 1401. An outer sleeve 16 is slidably sleeved on the outer side of the inner sleeve rod 15 away from the eccentric column 14. A second sliding groove 1601 for sliding of the inner sleeve rod 15 is formed in the outer sleeve 16. The outer sleeve 16 is also slidably connected to the inner side wall of the mounting box 2. A complete third U-shaped sliding groove 203 is formed on the left and right side walls and the bottom of the mounting box 2. The outer sleeve 16 is slidably connected to the third U-shaped sliding groove 203 at the outer side wall away from the inner sleeve rod 15. A first connecting rod 17 is vertically fixed to the inner sleeve rod 15. The first connecting rod 17 passes through the U-shaped through hole 201. The width of the U-shaped through hole 201 is greater than the diameter of the first connecting rod 17, so that the first connecting rod 17 can not only move along a U-shaped trajectory within the U-shaped through hole 201, but also move left and right within the U-shaped through hole 201. A second connecting rod 18 is fixed to the massage ball head 3. The first connecting rod 17 is connected to the second connecting rod 18, realizing the connection between the massage ball head 3 and the entire drive assembly. When the drive shaft 9 rotates, it drives the eccentric column 14, inner sleeve rod 15, outer sleeve 16, first connecting rod 17, second connecting rod 18, and massage ball head 3 to move along the path of the U-shaped rack 8. The sliding connection between the outer sleeve 16 and the inner wall of the mounting box 2 also ensures a stable connection between the inner sleeve rod 15 and the outer sleeve 16, allowing them to move synchronously with the eccentric column 14 along the U-shaped trajectory, thus enabling the massage ball head 3 to move stably along the U-shaped trajectory as well. On the other hand, when the eccentric column 14 rotates, it pulls the inner sleeve rod 15 to move left and right within the outer sleeve 16, thereby driving the first connecting rod 17, second connecting rod 18, and massage ball head 3 to move left and right with the inner sleeve rod 15. When the massage ball head 3 moves left and right, it can press on the vaginal wall of the pregnant woman, improving the massage effect.

[0041] To improve the stability and synchronicity of the inner sleeve rod 15 and the outer sleeve 16 moving synchronously with the eccentric column 14, a third connecting rod 19 is fixedly provided on the outer side wall of the outer sleeve 16. The end of the third connecting rod 19 away from the outer sleeve 16 is also fixedly connected to the mounting plate 6, so that the mounting plate 6 and the outer sleeve 16 form an integral structure, ensuring that they can move synchronously.

[0042] The working principle of the perineal massager in this embodiment is as follows: When using the perineal massager in this embodiment, the pregnant or postpartum woman is in a semi-reclining position with her legs bent and spread apart. She holds the entire massager by holding the handle 1, applies massage oil around the perineum and on the massage ball head 3, and then inserts the massage ball head 3 and the second connecting rod 18 into the vagina. The massage ball head 3 contacts the perineum, and then the drive motor 7 is activated (the switch for the drive motor 7 is directly located on the handle 1 for easy operation). The drive motor 7 drives the drive shaft 9 and the gear 10 to rotate. When the gear 10 rotates, it moves along the path of the U-shaped rack 8. This causes the drive motor 7 and the mounting plate 6 to move along the path of the U-shaped rack 8. The sliding connection between the first sliding block 5 and the rear side wall of the mounting box 2 ensures the stable movement of the entire mounting plate 6. The cooperation between the roller 12 and the second U-shaped slide groove 11 limits the position of the gear 10, preventing the gear 10 from disengaging from the U-shaped rack 8. Ultimately, the overall structure formed by the first sliding block 5, the mounting plate 6, the drive motor 7, the drive shaft 9, the gear 10, the roller 12, and the first support shaft 13 moves along the path of the U-shaped rack 8. At the same time, the drive shaft 9 can also rotate.

[0043] When the drive shaft 9 rotates, it drives the eccentric column 14, inner sleeve rod 15, outer sleeve 16, first connecting rod 17, second connecting rod 18, and massage ball head 3 to move along the path of the U-shaped rack 8, thus enabling the massage ball head 3 to move stably along the U-shaped trajectory within the pregnant woman's vagina. Simultaneously, the rotation of the eccentric column 14 pulls the inner sleeve rod 15 to move left and right within the outer sleeve 16, causing the first connecting rod 17, second connecting rod 18, and massage ball head 3 to move left and right with the inner sleeve rod 15. This left-right movement of the massage ball head 3 presses against the vaginal wall, enhancing the massage effect. It should be noted that the drive motor 7 in this invention is a reciprocating motor, which drives the gear 10 to reciprocate along the U-shaped rack 8, thereby enabling the massage ball head 3 to reciprocate along the U-shaped trajectory within the pregnant woman's vagina. Combined with the left-right movement of the massage ball head 3, this achieves a massage of the pregnant woman's perineum. Example 2

[0044] Based on Embodiment 1, in order to facilitate the disassembly, cleaning and replacement of the massage ball head 3, the first connecting rod 17 and the second connecting rod 18 are detachably connected. After one massage, the second connecting rod 18 and the massage ball head 3 can be detached from the first connecting rod 17 as a whole, and the second connecting rod 18 and the massage ball head 3 can be cleaned or replaced.

[0045] For details, see attached. Figure 7-9As shown, the first connecting rod 17 is a round rod, and a square groove 1701 is formed along the axial direction at the center of the first connecting rod 17. The end of the second connecting rod 18 near the first connecting rod 17 is a square structure that can be inserted into the square groove 1701. A plate 20 is slidably provided on the left and right sides of the first connecting rod 17. The plate 20 is radially connected within the first connecting rod 17, and a first sliding groove 1702 matching the plate 20 is formed radially within the first connecting rod 17. The first sliding groove 1702 communicates with the square groove 1701. A pressure plate 21 is fixedly provided at the end of the plate 20 outside the first connecting rod 17. A first spring 22 is provided between the pressure plate 21 and the first connecting rod 17. The two plates 20 are staggered, and each end of the two plates 20 within the first connecting rod 17 has a square hole 2001 matching the square groove 1701.

[0046] In this embodiment, when the first connecting rod 17 and the second connecting rod 18 are connected, the pressure plate 21 is pressed first, so that the insert plate 20 moves in the first sliding groove 1702 until it fits against the edge of the first sliding groove 1702. At this time, the square holes 2001 on the two insert plates 20 are completely aligned and correspond to the square groove 1701 on the first connecting rod 17. The second connecting rod 18 is inserted into the square groove 1701, with its end penetrating through the square holes 2001 on the two insert plates 20 until it is completely fitted against the innermost side of the square groove 1701. The pressure plate 21 is released, the first spring 22 returns to its deformation, and the edges of the square holes 2001 on the two insert plates 20 apply squeezing force to the left and right sides of the second connecting rod 18 respectively, so that the second connecting rod 18 can be firmly fixed in the first connecting rod 17. When disassembling the second connecting rod 18, first press the pressure plate 21 to release the force exerted on the second connecting rod 18 by the edge of the square hole 2001 of the insertion plate 20, and then pull the second connecting rod 18 out of the first connecting rod 17. It should be noted that the part of the second connecting rod 18 outside the first connecting rod 17 has a cylindrical structure, which facilitates insertion into the pregnant woman's vagina and will not cause damage to the pregnant woman's vagina. Example 3

[0047] Based on Embodiment 2, in order to adjust the massage intensity of the massage ball head 3 on the vaginal wall of the pregnant woman, a massage intensity adjustment component is provided between the outer sleeve 16 and the eccentric column 14 to adjust the left and right movement range of the first connecting rod 17, as shown in the attached figure. Figure 10-13 As shown.

[0048] Specifically, the massage intensity adjustment component includes an electric telescopic rod 23 installed inside the outer sleeve 16. A support plate 24 is fixedly mounted at the end of the electric telescopic rod 23. The outer sleeve 16 has a slot for mounting the electric telescopic rod 23 and the support plate 24, as well as for moving the support plate 24. Four uprights 25 are symmetrically fixed on the support plate 24. The uprights 25 are slidably disposed inside the outer sleeve 16, with their ends penetrating the outer sleeve 16. A single annular plate 26 is fixedly mounted at the ends of the four uprights 25. The annular plate 26 is fitted over the inner sleeve rod 15. The first connecting rod 17 is fixedly connected to the inner sleeve rod 15, and the inner sleeve rod 15 is fitted inside the first connecting rod 17. Multiple sets of second springs 27 are provided between the annular plate 26 and the first connecting rod 17. An arc-shaped sliding plate 28 is slidably disposed within the drive groove 1401 of the eccentric column 14. The sliding plate 28 is connected to the inner sleeve rod 15 via a third spring 29. It should be noted that the electric telescopic rod 23 has multiple different settings, and the telescopic length of the electric telescopic rod 23 is different in different settings. The control switch for adjusting the settings of the electric telescopic rod 23 is also located on the hand handle 1, which is convenient for pregnant women to adjust.

[0049] In this embodiment, the massage intensity adjustment component operates on the following principle: the length of the electric telescopic rod 23 is controlled by the gear adjustment control switch, thereby adjusting the overall position of the support plate 24, column 25, ring plate 26, and second spring 27. When the drive shaft 9 rotates, it drives the eccentric column 14, inner sleeve rod 15, outer sleeve 16, first connecting rod 17, second connecting rod 18, and massage ball head 3 to move along the path of the U-shaped rack 8, so that the massage ball head 3 can also move stably along the U-shaped trajectory inside the pregnant woman's vagina. On the other hand, when the eccentric column 14 rotates, it pulls the slide plate 28, third spring 29, and inner sleeve rod 15 along the axial direction of the outer sleeve 16. When the inner sleeve 15 moves towards the outer sleeve 16, it compresses the second spring 27 (without the second spring 27, the inner sleeve 15 and the first connecting rod 17 would continuously move towards the outer sleeve 16; the closer the first connecting rod 17 is to the outer sleeve 16, the greater the pressure exerted by the massage ball head 3 on the vaginal wall of the pregnant woman). This prevents the inner sleeve 15 and the first connecting rod 17 from moving towards the outer sleeve 16, thus shortening the distance the first connecting rod 17 moves towards the outer sleeve 16 and reducing the massage intensity. Simultaneously, to ensure the normal rotation of the eccentric column 14, the third spring 29 provides some clearance for the rotation of the eccentric column 14. Therefore, the closer the ring plate 26 is to the eccentric column 14, the less intense the massage intensity of the massage ball head 3 on the vaginal wall of the pregnant woman; conversely, the farther the ring plate 26 is from the eccentric column 14, the greater the massage intensity of the massage ball head 3 on the vaginal wall of the pregnant woman. Example 4

[0050] Based on Embodiment 1, Embodiment 2, or Embodiment 3, to further improve the massage effect, a sealing plug 30 is provided at one end of the inner sleeve rod 15 located inside the outer sleeve 16. The sealing plug 30 and the second sliding groove 1601 form a sealed total air chamber 31. A first air passage 32 is provided at the center of both the sealing plug 30 and the inner sleeve rod 15. A second air passage 33 communicating with the first air passage 32 is provided inside the first connecting rod 17. A third air passage 34 is provided inside the second connecting rod 18 (the second air passage 33 and the third air passage 34 are connected and their end faces are sealed after the first connecting rod 17 and the second connecting rod 18 are connected together). A main air passage 35 communicating with the third air passage 34 is provided inside the massage ball head 3. Multiple elastic protrusions 301 are provided on the surface of the massage ball head 3. A secondary air chamber 36 is formed between the elastic protrusions 301 and the massage ball head 3. Secondary air passages 37 communicate between the main air passage 35 and each of the multiple secondary air chambers 35, as shown in the attached diagram. Figure 14 As shown.

[0051] When the eccentric column 14 drives the inner sleeve rod 15 to move axially along the outer sleeve 16, the inner sleeve rod 15 and the sealing plug 30 move towards the outer sleeve 16, and the massage ball head 3 moves towards the vaginal wall of the pregnant woman, massaging the vaginal wall. At the same time, the sealing plug 30 squeezes the main air chamber 31, and the gas in the main air chamber 31 enters the main air chamber 35 in the massage ball head 3 through the first air passage 32, the second air passage 33 and the third air passage 34, and then enters the secondary air chamber 36 through the secondary air passage 37, causing the elastic protrusion 301 to protrude outward, further improving the massage effect on the vaginal wall. When the inner sleeve rod 15 moves away from the outer sleeve 16, the sealing plug 30 moves accordingly, and the gas in the secondary air chamber 36 is drawn back into the main air chamber 31. The massage ball head 3 also moves away from the vaginal wall of the pregnant woman, and this cycle repeats.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A perineal massager for pregnant and postpartum women, comprising a hand handle (1) and a massage ball head (3), characterized in that: The top of the hand handle (1) is provided with a mounting box (2), and a drive component for driving the massage ball head (3) to move is installed in the mounting box (2). The drive component passes through the front side wall of the mounting box (2) and is connected to the massage ball head (3). A U-shaped through hole (201) matching the movement trajectory of the massage ball head (3) is opened on the front side wall of the mounting box (2). The drive assembly includes a drive shaft (9) rotatably mounted in the mounting box (2), and the drive shaft (9) moves along a U-shaped trajectory in the mounting box (2). An eccentric column (14) is sleeved on the front end of the drive shaft (9), and an inner sleeve rod (15) is slidably provided on the outer side wall of the eccentric column (14). An outer sleeve (16) is slidably connected to the end of the inner sleeve rod (15). The outer sleeve (16) slides synchronously with the drive shaft (9) along a U-shape. The massage ball head (3) is connected to the inner sleeve rod (15). The end of the inner sleeve rod (15) is provided with a sealing plug (30), and a sealed main air chamber (31) is formed between the sealing plug (30) and the outer sleeve (16). The surface of the massage ball head (3) is provided with multiple elastic protrusions (301), and a secondary air chamber (36) is formed between the elastic protrusions (301) and the massage ball head (3). The main air chamber (31) and the secondary air chamber (36) are connected by an air passage.

2. The perineal massager for pregnant and postpartum women according to claim 1, characterized in that: The mounting box (2) is equipped with a U-shaped drive frame (4), and a U-shaped rack (8) is fixed on the inner side of the U-shaped drive frame (4). A gear (10) meshing with the U-shaped rack (8) is sleeved on the drive shaft (9). A mounting plate (6) is slidably connected along the U-shape on the rear side wall of the mounting box (2). A drive motor (7) is mounted on the mounting plate (6), and the output shaft of the drive motor (7) is connected to the drive shaft (9).

3. A perineal massager for pregnant and postpartum women according to claim 2, characterized in that: The outer side of the U-shaped drive frame (4) is provided with a roller (12), and the center of the roller (12) is fitted with a first support shaft (13), which is fixedly connected to the mounting plate (6).

4. A perineal massager for pregnant and postpartum women according to claim 3, characterized in that: A third connecting rod (19) is fixedly provided on the outer wall of the outer sleeve (16), and the end of the third connecting rod (19) away from the outer sleeve (16) is also fixedly connected to the mounting plate (6).

5. A perineal massager for pregnant and postpartum women according to claim 4, characterized in that: A first connecting rod (17) is vertically fixed on the inner sleeve rod (15). The first connecting rod (17) passes through the U-shaped through hole (201), and the width of the U-shaped through hole (201) is greater than the diameter of the first connecting rod (17). A second connecting rod (18) is fixed on the massage ball head (3), and the first connecting rod (17) is connected to the second connecting rod (18).

6. A perineal massager for pregnant and postpartum women according to claim 5, characterized in that: The center of the first connecting rod (17) is provided with a square groove (1701) that matches the end of the second connecting rod (18) along the axial direction. A plug plate (20) is provided on the left and right sides of the first connecting rod (17) respectively along the radial direction. A pressure plate (21) is fixed at one end of the plug plate (20) outside the first connecting rod (17). A first spring (22) is provided between the pressure plate (21) and the first connecting rod (17). A square hole (2001) matching the square groove (1701) is provided at one end of the two plug plates (20) inside the first connecting rod (17).

7. A perineal massager for pregnant and postpartum women according to claim 5 or 6, characterized in that: A massage intensity adjustment component for adjusting the left and right movement range of the first connecting rod (17) is provided between the outer sleeve (16) and the eccentric column (14). The massage intensity adjustment component includes a ring plate (26) movably sleeved outside the inner sleeve rod (15). Multiple sets of second springs (27) are provided between the ring plate (26) and the first connecting rod (17). A drive groove (1401) is opened around the circumference of the eccentric column (14). An arc-shaped sliding plate (28) is slidably provided in the drive groove (1401). The sliding plate (28) is connected to the inner sleeve rod (15) by a third spring (29).

8. A perineal massager for pregnant and postpartum women according to claim 7, characterized in that: An electric telescopic rod (23) is installed inside the outer sleeve (16). A support plate (24) is fixedly provided at the output end of the electric telescopic rod (23). Multiple columns (25) are symmetrically fixed on the support plate (24). The columns (25) slide through the outer sleeve (16). The ring plate (26) is connected to the columns (25).

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