A sitz bath for gynecological care

CN224640062UActive Publication Date: 2026-08-18SOUTH YUNNAN CENT HOSPITAL OF YUNNAN PROVINCE (THE FIRST PEOPLES HOSPITAL OF HONGHE HANI & YI AUTONOMOUS PREFECTURE)
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Patent Information

Application Number
CN202520868436.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-06
Publication Date
2026-08-18
Estimated Expiration
2035-05-06

AI Technical Summary

Technical Problem

[0004]针对现有技术存在的问题,本实用新型提供了一种妇科护理用坐浴器,具备便于了根据不同使用者的身型来调节舒适的下坐高度的作用,同时可以根据机体所调节的高度来对基座的支撑面积进行扩展加大保证支撑稳定的优点,解决了现有坐浴器通常不能够进行高度的调节,这样就不便于根据不同使用者的身高、体型存在的差异来调节舒适的下坐高度,进而会影响使用者的坐浴体验和护理效果的问题

Benefits of technology

[0014]1、本实用新型通过设置机体、基座、支撑杆、活动杆、调节装置、控制组件、盒体、电机、丝杆、撑起组件、移动座、转动座、调节杆、调节扩展装置、支撑组件、滑杆、连接板、支撑台、压杆、联动组件、转杆、转盘、行程槽、压转槽、挤压件、套板和压轴的配合使用,解决了现有坐浴器通常不能够进行高度的调节,这样就不便于根据不同使用者的身高、体型存在的差异来调节舒适的下坐高度,进而会影响使用者的坐浴体验和护理效果的问题。

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Abstract

The utility model discloses a sitz bath for gynecological nursing, including organism and base, the base sets up below the organism, the base upper surface four corners department all are fixedly connected with support rod, four support rod inside all are provided with movable rod. The utility model discloses the cooperation of the use of setting organism, base, support rod, movable rod, adjusting device, control assembly, box body, motor, screw rod, prop up subassembly, moving seat, rotating seat, adjusting rod, adjusting extension device, support subassembly, slide rod, connecting plate, support platform, pressure rod, linkage assembly, rotating rod, carousel, stroke groove, pressure transfer groove, extruding piece, cover plate and pressure axle, solve the existing sitz bath usually can not carry out the height's adjustment, like this is inconvenient according to the difference of the height of different users, the difference of the body shape to adjust comfortable sitting height, and then can influence the sitz bath experience and nursing effect of user's problem.
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Description

Technical Field

[0001] This utility model belongs to the field of gynecological nursing technology, and in particular relates to a sitz bath device for gynecological nursing. Background Technology

[0002] A sitz bath for gynecological care is a thoughtfully designed health aid, specifically tailored to women's intimate care needs. Through the gentle stimulation of warm water, the sitz bath effectively promotes blood circulation in the perineum, relieving discomfort caused by inflammation and infection, such as itching and burning. Made from safe, easy-to-clean medical-grade materials, it ensures hygiene and sterility, reducing the risk of cross-infection. Whether for daily cleaning or as an adjunct treatment for gynecological diseases, a sitz bath for gynecological care is an indispensable helper in women's health care.

[0003] The problem with existing technology is that existing sitz baths usually cannot be height adjusted, which makes it inconvenient to adjust the sitting height to suit the differences in height and body shape of different users, thus affecting the user's sitz bath experience and care effect. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a sitz bath device for gynecological care. It has the advantage of being able to easily adjust the comfortable sitting height according to different users' body shapes. At the same time, it can expand and increase the support area of ​​the base according to the height of the device to ensure stable support. This solves the problem that existing sitz bath devices usually cannot adjust the height, which makes it inconvenient to adjust the comfortable sitting height according to the differences in height and body shape of different users, thus affecting the user's sitz bath experience and care effect.

[0005] This utility model is implemented as follows: a sitz bath device for gynecological care includes a body and a base. The base is located below the body. Support rods are fixedly connected to the four corners of the upper surface of the base. Each of the four support rods has a movable rod inside. The upper ends of the four movable rods extend out to the four support rods and are movably connected to them. The upper ends of the four movable rods are fixedly connected to the lower end of the body. An adjustment device is provided above the base. A cavity is opened at the rear end of the base. An adjustment expansion device is provided inside the base and is fixedly connected to the base.

[0006] The preferred adjustment device of this utility model includes a control component and a support component. The control component is disposed above the base and fixedly connected to the base. There are two support components, which are respectively disposed on the left and right sides of the upper end of the control component. By setting the adjustment device, the height of the machine body can be adjusted, which facilitates the adjustment of the corresponding height according to the body shape of different users, thereby improving the range of use and the comfort of use.

[0007] The preferred control component of this utility model includes a housing, a motor, and lead screws. The housing is fixedly connected to the upper surface of the base. The motor is located in the middle of the housing, and its lower end is fixedly connected to the upper surface of the base. The motor is a bidirectional output end. There are two lead screws, which are respectively fixedly connected to the left and right output ends of the motor. The ends of the two lead screws that are far apart from each other are rotatably connected to the left and right sides of the housing. By setting up the control component, it is used to drive and control the adjustment device, and has the function of adjusting the operation by driving the two supporting components to move synchronously.

[0008] The preferred supporting component of this utility model includes a movable seat, a rotating seat, and an adjusting rod. The movable seat is located inside the right side of the box body and is sleeved on the surface of the lead screw and threadedly connected to the lead screw. The rotating seat is fixedly connected to the right side of the lower surface of the machine body. The upper end of the adjusting rod is sleeved on the surface of the rotating seat and rotatably connected to the rotating seat. The lower end of the adjusting rod extends into the box body and is sleeved on the surface of the movable seat and rotatably connected to the movable seat. By providing the supporting component, it is used to cooperate with the control component to adjust the machine body upward.

[0009] The preferred adjustment and expansion device of this utility model includes a support assembly, a linkage assembly, and a pressing component. There are three support assemblies, respectively disposed on the left, right, and rear sides inside the base. The linkage assembly is disposed between the three support assemblies. The pressing component is disposed at the lower end of the machine body and corresponds to the position of the linkage assembly. By providing the adjustment and expansion device, the support area of ​​the base can be adjusted. The support area of ​​the base is expanded and increased according to the height of the machine body, resulting in a larger support area and preventing instability of the machine body after adjustment.

[0010] The preferred support assembly of this utility model includes a sliding rod, a connecting plate, a support platform, and a pressure rod. There are two sliding rods, respectively located on the front and rear sides of the right end inside the base. The right ends of both sliding rods extend out of the base and are slidably connected to it. The connecting plate is located inside the base and is fixedly connected to the left ends of the two sliding rods. The support platform is fixedly connected to one end of the two sliding rods extending out of the base. The pressure rod is fixedly connected to the lower surface of the connecting plate. By providing this support assembly, the support area of ​​the base is expanded to provide auxiliary support, ensuring that the machine remains stable during use even after height adjustment.

[0011] The preferred linkage component of this utility model includes a rotating rod, a turntable, a stroke groove, and a pressing groove. The rotating rod is disposed inside the base, with its upper end extending out of the base and its lower end rotatably connected to the base. The turntable is disposed inside the base, sleeved on the surface of the rotating rod, and fixedly connected to the rotating rod. There are three stroke grooves, which are respectively opened on the left, right, and rear sides of the upper surface of the turntable, corresponding to the positions of the three pressing rods. The lower ends of the three pressing rods extend into the three stroke grooves and are movably connected to the stroke grooves. The pressing groove is opened on the rear surface of the upper end of the rotating rod. By setting the linkage component, it is used to drive the support components, and has the function of driving the three support components to open, close, and expand synchronously.

[0012] The preferred extrusion component of this utility model includes a sleeve plate and a pressure shaft. The sleeve plate is fixedly connected to the lower surface of the machine body, and its lower end is sleeved on the rear surface of the rotating rod and movably connected to the rotating rod. The pressure shaft is disposed in the pressure rotation groove and movably connected to the pressure rotation groove. The rear end of the pressure shaft extends out of the pressure rotation groove and is fixedly connected to the lower end of the sleeve plate. By setting the extrusion component, it is used to drive the linkage component. When the machine body moves upward for adjustment, it drives the extrusion component to move upward to extrude and rotate the linkage component.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model solves the problem that existing sitz baths usually cannot be height-adjusted, which makes it inconvenient to adjust the comfortable sitting height according to the differences in height and body shape of different users, thus affecting the user's sitz bath experience and care effect. By setting up a body, base, support rod, movable rod, adjustment device, control component, box, motor, lead screw, support component, moving seat, rotating seat, adjustment rod, adjustment extension device, support component, slide rod, connecting plate, support platform, pressure rod, linkage component, rotating rod, turntable, stroke groove, pressure rotation groove, extrusion part, sleeve plate and pressure shaft in cooperation, it solves the problem that existing sitz baths usually cannot be height-adjusted. This makes it inconvenient to adjust the sitting height according to the differences in height and body shape of different users, thus affecting the user's sitz bath experience and care effect. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the sitz bath provided in this embodiment of the utility model;

[0016] Figure 2 This is an exploded three-dimensional structural diagram of the sitz bath provided in this embodiment of the utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the adjustment device in a sitz bath provided in this embodiment of the utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the adjustment and expansion device in the sitz bath provided by an embodiment of the present utility model;

[0019] Figure 5 This is a three-dimensional structural diagram of the support component in the sitz bath provided by an embodiment of the present invention;

[0020] Figure 6 This is a three-dimensional structural diagram of the linkage component and the pressing component in the sitz bath provided by this utility model embodiment.

[0021] In the diagram: 1. Body; 2. Base; 3. Support rod; 4. Movable rod; 5. Adjustment device; 51. Control component; 511. Box body; 512. Motor; 513. Lead screw; 52. Support component; 521. Moving seat; 522. Rotating seat; 523. Adjustment rod; 6. Adjustment extension device; 61. Support component; 611. Slide rod; 612. Connecting plate; 613. Support platform; 614. Pressure rod; 62. Linkage component; 621. Rotating rod; 622. Turntable; 623. Stroke groove; 624. Pressing groove; 63. Extrusion part; 631. Sleeve plate; 632. Pressure shaft. Detailed Implementation

[0022] To further understand the invention content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0023] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0024] like Figures 1 to 6 As shown in the figure, a gynecological sitz bath device provided by this utility model includes a body 1 and a base 2. The base 2 is located below the body 1. Support rods 3 are fixedly connected to the four corners of the upper surface of the base 2. Movable rods 4 are provided inside the four support rods 3. The upper ends of the four movable rods 4 extend out of the four support rods 3 and are movably connected to the support rods 3. The upper ends of the four movable rods 4 are fixedly connected to the lower end of the body 1. An adjustment device 5 is provided above the base 2. A cavity is opened at the rear end of the base 2. An adjustment expansion device 6 is provided inside the base 2 and is fixedly connected to the base 2.

[0025] refer to Figure 1 , Figure 2 and Figure 3 The adjustment device 5 includes a control component 51 and a support component 52. The control component 51 is located above the base 2 and is fixedly connected to the base 2. There are two support components 52, which are respectively located on the left and right sides of the upper end of the control component 51.

[0026] The above solution involves setting an adjustment device 5 to adjust the height of the body 1, which facilitates adjusting the height according to the body shape of different users, thereby improving the range of use and user comfort.

[0027] refer to Figure 1 , Figure 2 and Figure 3 The control component 51 includes a housing 511, a motor 512, and a lead screw 513. The housing 511 is fixedly connected to the upper surface of the base 2. The motor 512 is located in the middle of the housing 511, and its lower end is fixedly connected to the upper surface of the base 2. The motor 512 is a bidirectional output end. There are two lead screws 513, which are fixedly connected to the left and right output ends of the motor 512 respectively. The ends of the two lead screws 513 that are far apart from each other are rotatably connected to the left and right sides inside the housing 511 respectively.

[0028] The above scheme is adopted: by setting up a control component 51, it is used to drive and control the adjustment device 5, and has the function of adjusting the operation by driving the two support components 52 to move synchronously.

[0029] refer to Figure 1 , Figure 2 and Figure 3 The supporting assembly 52 includes a movable seat 521, a rotating seat 522, and an adjusting rod 523. The movable seat 521 is located inside the right side of the box body 511 and is sleeved on the surface of the lead screw 513 and threadedly connected to the lead screw 513. The rotating seat 522 is fixedly connected to the right side of the lower surface of the machine body 1. The upper end of the adjusting rod 523 is sleeved on the surface of the rotating seat 522 and rotatably connected to the rotating seat 522. The lower end of the adjusting rod 523 extends into the box body 511 and is sleeved on the surface of the movable seat 521 and rotatably connected to the movable seat 521.

[0030] The above solution is adopted: by setting up the support component 52, it is used to cooperate with the control component 51 to adjust the body 1 upward.

[0031] refer to Figure 1 , Figure 2 and Figure 4The adjustment and expansion device 6 includes a support component 61, a linkage component 62, and an extrusion component 63. There are three support components 61, which are respectively arranged on the left and right sides and the rear side inside the base 2. The linkage component 62 is arranged between the three support components 61. The extrusion component 63 is arranged at the lower end of the machine body 1 and corresponds to the position of the linkage component 62.

[0032] The above solution is adopted: by setting an adjustment and expansion device 6, the support area of ​​the base 2 is adjusted. The support area of ​​the base 2 is expanded and increased according to the height of the body 1. The expansion of the support area of ​​the base 2 makes the support force area of ​​the base 2 larger, and avoids the body 1 from becoming unstable after the height is adjusted.

[0033] refer to Figure 2 , Figure 4 and Figure 5 The support assembly 61 includes a slide rod 611, a connecting plate 612, a support platform 613, and a pressure rod 614. There are two slide rods 611, which are respectively arranged on the front and rear sides of the right end inside the base 2. The right ends of the two slide rods 611 extend out of the base 2 and are slidably connected to the base 2. The connecting plate 612 is arranged inside the base 2 and is fixedly connected to the left ends of the two slide rods 611. The support platform 613 is fixedly connected to one end of the two slide rods 611 that extends out of the base 2. The pressure rod 614 is fixedly connected to the lower surface of the connecting plate 612.

[0034] The above solution is adopted: by setting up a support component 61, the support area of ​​the base 2 is expanded to provide auxiliary support, ensuring that the body 1 remains stable during use after the height is adjusted.

[0035] refer to Figure 4 and Figure 6 The linkage component 62 includes a rotating rod 621, a turntable 622, a stroke groove 623, and a pressing groove 624. The rotating rod 621 is located inside the base 2, with its upper end extending out of the base 2 and its lower end rotatably connected to the base 2. The turntable 622 is located inside the base 2, sleeved on the surface of the rotating rod 621, and fixedly connected to the rotating rod 621. There are three stroke grooves 623, which are respectively opened on the left, right, and rear sides of the upper surface of the turntable 622, and correspond to the positions of the three pressing rods 614. The lower ends of the three pressing rods 614 all extend into the three stroke grooves 623 and are movably connected to the stroke grooves 623. The pressing groove 624 is opened on the rear side surface of the upper end of the rotating rod 621.

[0036] The above solution involves setting up a linkage component 62 to drive the support component 61, thereby enabling the three support components 61 to open, close, and expand synchronously.

[0037] refer to Figure 2 , Figure 4 and Figure 6The extrusion component 63 includes a sleeve plate 631 and a pressure shaft 632. The sleeve plate 631 is fixedly connected to the lower surface of the machine body 1, and its lower end is sleeved on the rear surface of the rotating rod 621 and movably connected to the rotating rod 621. The pressure shaft 632 is disposed in the pressure groove 624 and movably connected to the pressure groove 624. The rear end of the pressure shaft 632 extends out of the pressure groove 624 and is fixedly connected to the lower end of the sleeve plate 631.

[0038] The above solution is adopted: by setting up the extrusion member 63, it is used to drive the linkage component 62. When the machine body 1 moves upward for adjustment, it drives the extrusion member 63 to move upward to extrude and rotate the linkage component 62.

[0039] The working principle of this utility model:

[0040] In operation, the control motor 512 drives the two lead screws 513 to rotate. Simultaneously, the rotation of the lead screws 513 causes the two movable seats 521 to move left and right within the housing 511. This movement of the movable seats 521 pushes the two adjusting rods 523 to the left and right, causing them to press upwards and push the rotating seat 522. This upward push of the rotating seat 522 lifts the machine body 1. As the machine body 1 moves upwards, it also drives the four movable rods 4 to move upwards within the support rod 3, providing a limiting function and thus adjusting the machine's position. When the height of body 1 is adjusted upwards, it causes the sleeve plate 631 to move upwards. Simultaneously, the upward movement of the sleeve plate 631 causes the pressure shaft 632 to move upwards within the pressure groove 624, pressing and squeezing the rotating rod 621. This compression causes the rotating rod 614 to rotate. The rotation of the pressure rod 614, in turn, causes the turntable 622 to rotate. The rotation of the turntable 622, in turn, causes the three stroke grooves 623 to rotate. Simultaneously, the rotation of the three stroke grooves 623 compresses the internal pressure rod 614, causing it to move and thus the connecting plate 612. The movement of the connecting plate 612, along with the sliding... Rod 611 pushes the support platform 613 outward, thereby expanding the support area of ​​the base 2 while adjusting the height. When adjusting downward, the control motor 512 drives the lead screw 513 to rotate in the opposite direction. The rotation of the two lead screws 513 drives the two movable seats 521 to move closer together inside the box 511. At the same time, the two movable seats 521 pull the lower ends of the two adjusting rods 523 to move closer together, causing the adjusting rods 523 to be pulled and tilted. This tilts the machine body 1 downward through the rotating seat 522. At the same time, the downward movement of the machine body 1 drives the movable rod 4 to move inward inside the support rod 3. The body 1 moves downward, and then adjusts downward. The downward movement of the body 1 drives the sleeve plate 631 downward. At the same time, the sleeve plate 631 moves downward, and at the same time, it drives the pressure shaft 632 to move downward in the pressure groove 624 to squeeze. This causes the rotating rod 621 to rotate in the opposite direction under pressure. At the same time, the rotation drives the turntable 622 to rotate in the opposite direction. At the same time, the rotation of the turntable 622 drives the three stroke grooves 623 to rotate to squeeze the internal pressure rod 614. The pressure rod 614 is squeezed and pulls the connecting plate 612 to move. At the same time, the moving connecting plate 612 pulls the support platform 613 together and retracts it through the slide rod 611.

[0041] In summary, this gynecological sitz bath device, through the coordinated use of a body 1, base 2, support rod 3, movable rod 4, adjustment device 5, control component 51, housing 511, motor 512, lead screw 513, support component 52, movable seat 521, rotating seat 522, adjustment rod 523, adjustment extension device 6, support component 61, slide rod 611, connecting plate 612, support platform 613, pressure rod 614, linkage component 62, rotating rod 621, turntable 622, stroke groove 623, pressure groove 624, extrusion component 63, sleeve plate 631, and pressure shaft 632, solves the problem that existing sitz bath devices typically cannot adjust their height, making it inconvenient to adjust the comfortable sitting height according to the differences in height and body shape of different users, thus affecting the user's sitz bath experience and nursing effect.

[0042] It should be noted that the motor 512 is a device or equipment existing in the prior art, or a device or equipment that can be implemented by the prior art, and the specific composition and principle of the power supply of the motor 512 are clear to those skilled in the art, so they will not be described in detail.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sitz bath device for gynecological care, comprising a body (1) and a base (2), characterized in that: The base (2) is located below the body (1). Support rods (3) are fixedly connected to the four corners of the upper surface of the base (2). Movable rods (4) are provided inside the four support rods (3). The upper ends of the four movable rods (4) extend out of the four support rods (3) and are movably connected to the support rods (3). The upper ends of the four movable rods (4) are fixedly connected to the lower end of the body (1). An adjustment device (5) is provided above the base (2). A cavity is opened at the rear end of the base (2). An adjustment expansion device (6) is provided inside the base (2). The adjustment expansion device (6) is fixedly connected to the base (2).

2. The sitz bath device for gynecological care as described in claim 1, characterized in that: The adjustment device (5) includes a control component (51) and a support component (52). The control component (51) is disposed above the base (2) and is fixedly connected to the base (2). There are two support components (52), which are respectively disposed on the left and right sides of the upper end of the control component (51).

3. A sitz bath device for gynecological care as described in claim 2, characterized in that: The control component (51) includes a housing (511), a motor (512), and lead screws (513). The housing (511) is fixedly connected to the upper surface of the base (2). The motor (512) is located in the middle of the housing (511), and its lower end is fixedly connected to the upper surface of the base (2). The motor (512) is a bidirectional output end. There are two lead screws (513), which are fixedly connected to the left and right output ends of the motor (512), respectively. The ends of the two lead screws (513) that are far apart from each other are rotatably connected to the left and right sides inside the housing (511).

4. A sitz bath device for gynecological care as described in claim 3, characterized in that: The supporting assembly (52) includes a movable seat (521), a rotating seat (522), and an adjusting rod (523). The movable seat (521) is located inside the right side of the box body (511) and is sleeved on the surface of the lead screw (513) and threadedly connected to the lead screw (513). The rotating seat (522) is fixedly connected to the right side of the lower surface of the machine body (1). The upper end of the adjusting rod (523) is sleeved on the surface of the rotating seat (522) and rotatably connected to the rotating seat (522). The lower end of the adjusting rod (523) extends into the box body (511), is sleeved on the surface of the movable seat (521), and rotatably connected to the movable seat (521).

5. A sitz bath device for gynecological care as described in claim 1, characterized in that: The adjustment and expansion device (6) includes a support assembly (61), a linkage assembly (62), and an extrusion member (63). There are three support assemblies (61), which are respectively arranged on the left and right sides and the rear side inside the base (2). The linkage assembly (62) is arranged between the three support assemblies (61). The extrusion member (63) is arranged at the lower end of the body (1) and corresponds to the position of the linkage assembly (62).

6. A sitz bath device for gynecological care as described in claim 5, characterized in that: The support assembly (61) includes a slide rod (611), a connecting plate (612), a support platform (613), and a pressure rod (614). There are two slide rods (611), which are respectively located on the front and rear sides of the right end inside the base (2). The right ends of the two slide rods (611) extend out of the base (2) and are slidably connected to the base (2). The connecting plate (612) is located inside the base (2) and is fixedly connected to the left ends of the two slide rods (611). The support platform (613) is fixedly connected to one end of the two slide rods (611) that extends out of the base (2). The pressure rod (614) is fixedly connected to the lower surface of the connecting plate (612).

7. A sitz bath device for gynecological care as described in claim 6, characterized in that: The linkage component (62) includes a rotating rod (621), a turntable (622), a stroke groove (623), and a pressing groove (624). The rotating rod (621) is disposed inside the base (2), with its upper end extending out of the base (2) and its lower end rotatably connected to the base (2). The turntable (622) is disposed inside the base (2), sleeved on the surface of the rotating rod (621), and fixedly connected to the rotating rod (621). There are three stroke grooves (623), which are respectively opened on the left and right sides and the rear side of the upper surface of the turntable (622), and correspond to the positions of the three pressing rods (614). The lower ends of the three pressing rods (614) extend into the three stroke grooves (623) and are movably connected to the stroke grooves (623). The pressing groove (624) is opened on the rear side surface of the upper end of the rotating rod (621).

8. A sitz bath device for gynecological care as described in claim 7, characterized in that: The extrusion component (63) includes a sleeve plate (631) and a pressure shaft (632). The sleeve plate (631) is fixedly connected to the lower surface of the machine body (1), and its lower end is sleeved on the rear surface of the rotating rod (621) and movably connected to the rotating rod (621). The pressure shaft (632) is disposed in the pressure groove (624) and movably connected to the pressure groove (624). The rear end of the pressure shaft (632) extends out of the pressure groove (624) and is fixedly connected to the lower end of the sleeve plate (631).