An electric vaginal dilator

Abstract

The present invention relates to the technical field of medical devices, and more specifically to an electric vaginal dilator which is convenient to connect and disassemble, has a small size, and can adapt to the shape of the vagina to expand; it comprises an upper expansion piece (1), a lower expansion piece (2), a multi-rod transmission mechanism, a power source and a control device; wherein the upper expansion piece (1) and the lower expansion piece (2) enter the vagina and contact the skin, the power source and the control device are used to provide power, assist the doctor in holding and switching, and automatically control, etc., and the multi-rod transmission mechanism is used to convert the power direction to act on the upper expansion piece (1) and the lower expansion piece (2); it has the advantages of convenient connection and disassembly, small size, adaptability to the shape of the vagina to expand, safety, etc.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to an electric vaginal dilator which is convenient to connect and disassemble, has a small volume and can adapt to the shape of the vagina. Background Art

[0002] In the examination and operation of gynecological diseases, the vaginal dilator is used to open the vagina, open the field of vision, and open the operation and treatment channel. The commonly used vaginal dilator consists of duckbill-shaped upper and lower dilators, a handle, an adjustment mechanism, etc. The relative movement of the upper and lower dilators includes relative rotation and relative movement.

[0003] ZL201520377271.9 discloses an electric fine-tuning vaginal dilator, which includes a duckbill upper shell, a duckbill lower shell, and a handheld fine-tuning device, and uses a motor, a transmission gear, etc. to realize automatic dilator expansion. The disadvantage of this device is that the handheld fine-tuning device is connected to the duckbill upper shell and the duckbill lower shell, and the handheld fine-tuning device may affect the observation space or operation space during surgery or observation.

[0004] ZL202010312111.1 discloses a disposable non-touch inductive vaginal dilator device, which includes an upper dilator and a lower dilator, and uses an electric motor and an elastic contraction belt to drive the upper dilator and the lower dilator to rotate relative to each other. The disadvantages of this device are that the upper dilator and the lower dilator only rotate relative to each other, and their shapes may not be suitable for the opening characteristics of the vagina, resulting in incomplete expansion of the outer side of the vagina, and the driving device is left on the upper dilator and the lower dilator, which may affect the observation space or operation space. Summary of the invention

[0005] The present invention aims to solve the problems that the electric device of the electric vaginal dilator remains on the vaginal dilator, which hinders observation and operation, and the problem that the upper and lower expansion plates of the electric vaginal dilator have insufficient movement ability, resulting in insufficient vaginal expansion. An electric vaginal dilator is proposed, which is easy to disassemble, small in size, and can adapt to the shape of the vagina.

[0006] The present invention provides an electric vaginal dilator comprising an upper dilator (1), a lower dilator (2), a multi-rod transmission mechanism, a power source and a control device; wherein the upper dilator (1) and the lower dilator (2) enter the vagina and contact the skin, the power source and the control device provide power, assist the doctor in holding and switching, and automatically control, etc., and the multi-rod transmission mechanism converts the power direction to act on the upper dilator (1) and the lower dilator (2).

[0007] The multi-rod transmission mechanism comprises: a lower expansion plate connecting rod (3), a screw rod 1 (4), a nut 1 (5), a slider (6), an upper expansion plate connecting rod (7), a screw rod 2 (9), and a nut 2 (10). The power source and control device comprises: a bevel gear steering gear 1 (8), a bevel gear steering gear 2 (11), a slot (12), a spring (13), a base (15), a bevel gear 1 (16), a bevel gear 2 (17), a sensor 1 (18), a sensor 2 (19), a button (20), a motor 1 (21), a motor 2 (22), a control chip (23), a battery (24), a power source and a control box (25), an unlocker (14) or an electromagnet (26), and a handle (27).

[0008] The upper expansion piece (1) and the upper expansion piece connecting rod (7) can be quickly and firmly connected via the groove and the boss, and the lower expansion piece (2) and the lower expansion piece connecting rod (3) can also be quickly and firmly connected via the groove and the boss.

[0009] The multi-rod transmission mechanism and the power source and control device can be connected and power transmitted by inserting the boss of the lower expansion plate connecting rod (3) into the groove of the card slot (12), the boss of the screw rod 1 (4) into the groove of the bevel gear steering gear 1 (8), and the boss of the screw rod 2 (9) into the groove of the bevel gear steering gear 2 (11). The card slot (12) can be moved downward by rotating the unlocking device (14) counterclockwise, thereby facilitating the installation and removal of the multi-rod transmission mechanism, the power source and the control device. After the vagina is expanded, only the upper expansion plate (1), the lower expansion plate (2) and the multi-rod transmission mechanism remain on the patient, which can increase the space for observation and surgical operation. In addition, the multi-rod transmission mechanism adopts a screw nut, which can be self-locking after the power source and the control device are removed.

[0010] In the multi-rod transmission mechanism, screw rod 1 (4) and screw rod 2 (9) are prime movers. The power of screw rod 1 (4) is transmitted by motor 1 (21) through sensor 1 (18), bevel gear 1 (16), and bevel gear steering gear 1 (8). The power of screw rod 2 (9) is transmitted by motor 2 (22) through sensor 2 (19), bevel gear 2 (17), and bevel gear steering gear 2 (11).

[0011] The screw rod 1 (4) and the nut 1 (5) form a spiral pair. When the screw rod 1 (4) rotates, the nut 1 (5) moves up and down. The screw rod 2 (9) and the nut 2 (10) form a spiral pair. When the screw rod 2 (9) rotates, the nut 2 (10) moves up and down. The upper expansion piece connecting rod (7) and the slider (6) form a moving pair. The slider (6) and the nut 1 (5) are hinged, and the upper expansion piece connecting rod (7) and the nut 2 (10) are hinged. Therefore, when the screw rod 1 (4) and the screw rod 2 (9) rotate, the upper expansion piece connecting rod (7) can rise, fall and rotate relative to the lower expansion piece connecting rod (3) to better adapt to the vaginal expansion characteristics of different patients.

[0012] The control chip (23) receives signals from sensor 1 (18) and sensor 2 (19) and can control the rotation of motor 1 (21) and motor 2 (22). The control chip (23) can analyze the rotation resistance of screw 1 (4) and screw 2 (9) based on the signals, thereby analyzing the difficulty of expanding the inner and outer sides of the vagina and the limits of the expansion of the inner and outer sides, so that the dilator can fully expand the outer and inner sides of the vagina while keeping the force on the tissue within a safe range. At the same time, this can replace the doctor's experience and judgment to expand the vagina more accurately and conveniently.

[0013] The beneficial effects of the present invention are: 1) the vaginal dilator can be electrically expanded, and the upper expansion piece (1) and the lower expansion piece (2) have the ability to adjust the distance and angle, which can fully expand the vagina, while reducing the doctor's labor intensity and ensuring the vaginal expansion effect. 2) The distance and angle between the upper expansion piece (1) and the lower expansion piece (2) of the vaginal dilator can be adjusted according to the torque and other data measured by the sensor to adapt to the vaginal conditions of different patients, and the pain of the patient can be reduced while the vagina is fully expanded, which is safer. 3) According to the torque and other data measured by the sensor, it can automatically check whether the patient's vagina has been fully expanded or whether it can still be expanded, etc., without the doctor personally controlling the expansion process of the vaginal dilator, only a pneumatic vaginal dilator is needed, and the degree of automation is higher. 4) The power source and the control device can be conveniently connected to the multi-rod transmission mechanism to realize power transmission. After the vagina is dilated, the unlocker (14) is rotated counterclockwise to move the slot (12) downward, thereby quickly separating the power source from the control device. The multi-rod transmission mechanism can be kept in an open state by means of the self-locking screw nut, making the device more compact and leaving more space for observation and surgical operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall structure diagram of the electric vaginal dilator.

[0015] Figure 2 It is a connection diagram of the multi-rod transmission mechanism, the power source and the control device.

[0016] Figure 3 This is a schematic diagram of the multi-rod mechanism of the four-rod vaginal dilator.

[0017] Figure 4 This is a force diagram of a multi-rod mechanism.

[0018] Figure 5 Schematic diagram of the large opening of the vaginal dilator.

[0019] Figure 6 Schematic diagram of the small opening of the vaginal dilator.

[0020] Figure 7 This is a structural diagram of Example 2.

[0021] Explanation of main symbols: 1. Upper expansion piece, 2. Lower expansion piece, 3. Lower expansion piece connecting rod, 4. Screw 1, 5. Nut 1, 6. Slider, 7. Upper expansion piece connecting rod, 8. Bevel gear steering gear 1, 9. Screw 2, 10. Nut 2, 11. Bevel gear steering gear 2, 12. Slot, 13. Spring, 14. Unlocker, 15. Base, 16. Bevel gear 1, 17. Bevel gear 2, 18. Sensor 1, 19. Sensor 2, 20. Button, 21. Motor 1, 22. Motor 2, 23. Control chip, 24. Battery, 25. Power source and control box, 26. Electromagnet, 27. Handle. DETAILED DESCRIPTION

[0022] The specific implementation modes of the present invention are described in detail below with reference to the accompanying drawings.

[0023] Figure 1 This is an embodiment disclosed in the present invention, an electric vaginal dilator comprises an upper dilator (1), a lower dilator (2), a multi-rod transmission mechanism, a power source and a control device; wherein the upper dilator (1) and the lower dilator (2) enter the vagina and contact the skin, the power source and the control device are used to provide power, assist the doctor in holding and switching, and automatically control, etc., and the multi-rod transmission mechanism is used to convert the power direction to act on the upper dilator (1) and the lower dilator (2).

[0024] The upper expansion piece (1) and the lower expansion piece (2) each have a groove opening toward the center line at one end. Specifically, the groove of the upper expansion piece (1) opens downwards, while the groove of the lower expansion piece (2) opens upwards. Both the upper expansion piece (1) and the lower expansion piece (2) are disposable.

[0025] The multi-rod transmission mechanism comprises: a lower expansion plate connecting rod (3), a screw rod 1 (4), a nut 1 (5), a slider (6), an upper expansion plate connecting rod (7), a screw rod 2 (9), and a nut 2 (10). The lower expansion plate connecting rod (3) forms a rotation pair with the screw rod 1 (4) and the screw rod 2 (9) respectively, and the screw rod 1 (4) and the screw rod 2 (9) can rotate around their own center lines; the lower expansion plate connecting rod (3) has three bosses, one of which can be inserted into the groove of the lower expansion plate (2), and the other two bosses can be inserted into the two grooves of the clamping groove (12). The screw rod 1 (4) and the nut 1 (5) form a spiral pair, and the upper end of the screw rod 1 (4) has a boss, which can be inserted into the groove of the bevel gear steering gear 1 (8) to realize the power transmission from the bevel gear steering gear 1 (8) to the screw rod 1 (4). The slider (6) and the upper expansion piece connecting rod (7) form a moving pair, the slider (6) can move on the upper expansion piece connecting rod (7), and the slider (6) is hinged to the nut 1 (5). The screw rod 2 (9) and the nut 2 (10) form a spiral pair, the upper end of the screw rod 2 (9) has a boss, and the boss can be inserted into the groove of the bevel gear steering gear 2 (11), so as to realize the power transmission from the bevel gear steering gear 2 (11) to the screw rod 2 (9). The upper expansion piece connecting rod (7) is hinged to the nut 2 (10), and the upper expansion piece connecting rod (7) has a boss, and the boss can be inserted into the groove of the upper expansion piece (1).

[0026] The power source and control device include: a bevel gear steering gear 1 (8), a bevel gear steering gear 2 (11), a slot (12), a spring (13), an unlocker (14), a base (15), a bevel gear 1 (16), a bevel gear 2 (17), a sensor 1 (18), a sensor 2 (19), a button (20), a motor 1 (21), a motor 2 (22), a control chip (23), a battery (24), a power source and a control box (25). The bevel gear steering gear 1 (8) has a bevel gear and a slot, the bevel gear steering gear 1 (8) and the base (15) form a rotating pair, the bevel gear steering gear 1 (8) can rotate around the center line of the bevel gear, and the bevel gear steering gear 1 (8) is meshed with the bevel gear 1 (16). The bevel gear steering gear 2 (11) has a bevel gear and a groove. The bevel gear steering gear 2 (11) and the base (15) form a rotation pair. The bevel gear steering gear 2 (11) can rotate around the center line of the bevel gear. The bevel gear steering gear 2 (11) is meshed with the bevel gear 2 (17). The base (15) and the bevel gear 1 (16) and the bevel gear 2 (17) respectively form a rotation pair. The base (15) is fixedly connected to the power source and the control box (25). The base (15) and the unlocker (14) are hinged. The base (15) and the slot (12) form a moving pair. The slot (12) can slide up and down. The slot (12) has two grooves. A spring (13) is installed between the slot (12) and the base (15) to make the slot (12) move upward. The unlocker (14) can contact the upper end of the slot (12). Rotating the unlocker (14) counterclockwise pushes the slot (12) to move downward. The motor 1 (21) is fixed in the power source and the control box (25), the output shaft of the motor 1 (21) is connected to the sensor 1 (18), the sensor 1 (18) is fixed in the power source and the control box (25), and the other end of the sensor 1 (18) is connected to the bevel gear 1 (16). The motor 2 (22) is fixed in the power source and the control box (25), the output shaft of the motor 2 (22) is connected to the sensor 2 (19), the sensor 2 (19) is fixed in the power source and the control box (25), and the other end of the sensor 2 (19) is connected to the bevel gear 2 (17). The button (20) is installed on the power source and the control box (25). The control chip (23) and the battery (24) are respectively fixed in the power source and the control box (25), the control chip (23) receives signals from the sensor 1 (18) and the sensor 2 (19), and can control the motor 1 (21) and the motor 2 (22), and the battery (24) provides electrical energy to the device.

[0027] The upper expansion piece (1), the lower expansion piece (2), the multi-rod transmission mechanism, the power source and the control device can quickly form a firm connection. The upper expansion piece (1) and the upper expansion piece connecting rod (7) can be quickly and firmly connected through the groove and the boss, and the lower expansion piece (2) and the lower expansion piece connecting rod (3) can also be quickly and firmly connected through the groove and the boss. Figure 2 As shown, the multi-rod transmission mechanism and the power source and control device can be connected and power transmitted by inserting the boss of the lower expansion plate connecting rod (3) into the groove of the card slot (12), the boss of the screw rod 1 (4) into the groove of the bevel gear steering gear 1 (8), and the boss of the screw rod 2 (9) into the groove of the bevel gear steering gear 2 (11). Counterclockwise rotation of the unlocking device (14) can make the card slot (12) move downward, thereby facilitating the installation and removal of the multi-rod transmission mechanism, the power source and the control device. After the vagina is expanded, only the upper expansion plate (1), the lower expansion plate (2) and the multi-rod transmission mechanism remain on the patient, which can increase the space for observation and surgical operation; and the multi-rod transmission mechanism adopts a screw nut, which can be self-locking after the power source and the control device are removed.

[0028] Figure 3 The invention is a schematic diagram of a multi-rod mechanism of a four-rod uterine dilator. As shown in the figure, the screw rod 1 (4) and the screw rod 2 (9) are the prime movers and can rotate. The screw rod 1 (4) and the nut 1 (5) form a spiral pair. When the screw rod 1 (4) rotates, the nut 1 (5) moves up and down. The screw rod 2 (9) and the nut 2 (10) form a spiral pair. When the screw rod 2 (9) rotates, the nut 2 (10) moves up and down. The upper expansion piece connecting rod (7) and the slider (6) form a moving pair. The slider (6) and the nut 1 (5) are hinged. The upper expansion piece connecting rod (7) and the nut 2 (10) are hinged. Therefore, when the screw rod 1 (4) and the screw rod 2 (9) rotate, the upper expansion piece connecting rod (7) can rise, fall and rotate relative to the lower expansion piece connecting rod (3), thereby driving the upper expansion piece (1) and the lower expansion piece (2) to move and rotate relative to each other, so as to better adapt to the vaginal dilation characteristics of different patients.

[0029] The force condition of the multi-bar mechanism can be simplified as Figure 4 The situation shown is as follows: the upper expansion plate (1) is subjected to a downward force F1 from the vagina, and this force is distributed over most of the upper expansion plate (1); the lower expansion plate (2) is subjected to an upward force F2 from the vagina, and this force is distributed over most of the lower expansion plate (2); there is a pressure T1 on the screw rod 1 (4), and there is a pressure T2 on the screw rod 2 (9).

[0030] The ability of different patients to expand the inner and outer sides of the vagina will affect the expansion of the vagina and the shape of the vaginal speculum. When the vaginal speculum is used to expand the vagina, the safety of the patient must be guaranteed, that is, to avoid excessive expansion of the vagina and causing vaginal tearing, etc. Figure 5 As shown, if the distance allowed for the outside of the vagina to expand is small, the angle between the upper expansion piece (1) and the lower expansion piece (2) is larger, such as Figure 6As shown, if the distance allowed for the outside of the vagina to expand is large, the angle between the upper expansion piece (1) and the lower expansion piece (2) is smaller. The pressures T1 and T2 on the screw rod 1 (4) and the screw rod 2 (9) can be calculated by using the torque and other parameters measured by the sensor 1 (18) and the sensor 2 (19). At the same time, the size and pressure of the screw rod 1 (4) and the screw rod 2 (9) can be used to calculate the magnitude and position of the combined force of the vagina on the upper expansion piece (1) and the lower expansion piece (2). If the combined force is close to the outside of the vagina, it means that the outside of the vagina is subjected to a greater force at this time. If the combined force is close to the inside of the vagina, it means that the inside of the vagina is subjected to a greater force at this time. Therefore, the combined force of the vagina on the upper expansion piece (1) and the lower expansion piece (2) and the position can be used to accurately estimate the force conditions on the inside and outside of the vagina. The control chip (23) receives signals from sensor 1 (18) and sensor 2 (19) and can control the rotation of motor 1 (21) and motor 2 (22). The control chip (23) can analyze the rotation resistance of screw 1 (4) and screw 2 (9) based on the signals, thereby analyzing the difficulty of expanding the inner and outer sides of the vagina and the limits of the expansion of the inner and outer sides, so that the dilator can fully expand the outer and inner sides of the vagina while keeping the force on the tissue within a safe range. At the same time, this can replace the doctor's experience and judgment to expand the vagina more accurately and conveniently.

[0031] The working process of the device is as follows: 1) The doctor connects the upper expansion piece (1) and the lower expansion piece (2) to the upper expansion piece connecting rod (7) and the lower expansion piece connecting rod (3) of the multi-rod transmission mechanism through the groove and the boss; 2) The doctor holds the power source and the control box (25), rotates the unlocker (14) counterclockwise, inserts the boss of the lower expansion piece connecting rod (3) into the groove of the card slot (12), inserts the boss of the screw rod 1 (4) into the groove of the bevel gear steering gear 1 (8), and inserts the boss of the screw rod 2 (9) into the groove of the bevel gear steering gear 2 (11) to achieve connection and power transmission; 3) The upper expansion piece (1) and the lower expansion piece (2) are placed in the patient's vagina, the dilator is started by the button (20), and after waiting for the dilation to be completed, the unlocker (14) is rotated counterclockwise to remove the power source and the control device.

[0032] Figure 7 This is the second embodiment disclosed in the present invention. Compared with the first embodiment, the pushing method of the card slot (12), the doctor's hand-held position, the installation position of the button (20), the control chip (23) and the battery (24) in the second embodiment are changed. Figure 7 As shown, the electromagnet (26) is mounted on the base (15), and the electromagnet (26) can push the card slot (12) to move downward, replacing the unlocker (14) in the first embodiment. The action of the electromagnet (26) is controlled by the button (20). Figure 7As shown, the button (20), the control chip (23), and the battery (24) are respectively mounted on the handle (27), the handle (27) and the base (15) are hinged, and the remaining devices after removing the handle (27), the button (20), the control chip (23), and the battery (24) are balanced in gravity torque about the hinge point.

[0033] Compared with the working process of the device of the first embodiment, the working process of the device of the second embodiment is slightly changed, including that when the doctor uses it, he holds the handle (27) and the card slot (12) is pushed by the electromagnet (26).

[0034] The problem addressed by this embodiment is that when a doctor holds the device described in the first embodiment, under the influence of the gravity of the device and the external force of the doctor's grip, the interaction force between the upper expansion plate (1), the lower expansion plate (2) and the vagina will include an additional component to balance the gravity of the device and the external force of the doctor's grip, which will affect the calculation of the expansion conditions of the inner and outer sides of the vagina.

[0035] The working principle of this embodiment is: 1) utilizing the reasonable position of the hinge point between the handle (27) and the base (15), and using this hinge point as a fulcrum to balance the vaginal dilator device left and right, thereby reducing the influence of gravity on the device; 2) the doctor holds the handle (27), and the handle (27) is hinged to the base (15), which can reduce the influence of the doctor's external force.

[0036] The advantages of this embodiment are: reducing the influence of the gravity of the device and the external force of the doctor's grip on the expansion of the vagina, and the control chip (23) analyzes the difficulty of expanding the inner and outer sides of the vagina and the limits of the inner and outer expansion more accurately, making the electric vaginal dilator safer and more reliable.

Claims

1. An electric vaginal dilator, comprising an upper dilator (1), a lower dilator (2), a multi-rod transmission mechanism, a power source and a control device, characterized in that: The multi-rod transmission mechanism comprises a lower expansion plate connecting rod (3), a screw rod 1 (4), a nut 1 (5), a slider (6), an upper expansion plate connecting rod (7), a screw rod 2 (9), and a nut 2 (10); the power source and control device comprises: a bevel gear steering gear 1 (8), a bevel gear steering gear 2 (11), a slot (12), a spring (13), a base (15), a bevel gear 1 (16), a bevel gear 2 (17), a sensor 1 (18), a sensor 2 (19), a button (20), a motor 1 (21), a motor 2 (22), a control chip (23), a battery (24), a motor The power source and the control box (25), the unlocker (14) or the electromagnet (26) and the handle (27); the lower expansion piece connecting rod (3) and the screw rod 1 (4) and the screw rod 2 (9) respectively form a rotating pair, the screw rod 1 (4) and the screw rod 2 (9) rotate around their own center lines, the screw rod 1 (4) and the nut 1 (5) form a spiral pair, the slider (6) and the upper expansion piece connecting rod (7) form a moving pair, the slider (6) moves on the upper expansion piece connecting rod (7), the slider (6) and the nut 1 (5) are hinged, the screw rod 2 (9) and the nut 2 (10) form a spiral pair, the upper expansion piece connecting rod (7) and the nut 2 (10) form a spiral pair. ) is hinged; the bevel gear steering gear 1 (8) and the base (15) form a rotating pair, the bevel gear steering gear 1 (8) is meshed with the bevel gear 1 (16), the bevel gear 1 (16) and the base (15) form a rotating pair, the bevel gear steering gear 2 (11) and the base (15) form a rotating pair, the bevel gear steering gear 2 (11) and the bevel gear 2 (17) are meshed, the bevel gear 2 (17) and the base (15) form a rotating pair, the base (15) and the slot (12) form a moving pair, a spring (13) is installed between the slot (12) and the base (15), so that the slot (12) moves upward, and the base (15) and The power source is fixedly connected to the control box (25); the sensor 1 (18), the sensor 2 (19), the button (20), the motor 1 (21), and the motor 2 (22) are installed in the power source and the control box (25); the output shaft of the motor 1 (21) is connected to the sensor 1 (18); the other end of the sensor 1 (18) is connected to the bevel gear 1 (16); the bevel gear 1 (16) drives the screw rod 1 (4) to rotate; the output shaft of the motor 2 (22) is connected to the sensor 2 (19); the other end of the sensor 2 (19) is connected to the bevel gear 2 (17); the bevel gear 2 (17) drives the screw rod 2 (9) to rotate.

2. The electric vaginal dilator according to claim 1, characterized in that: The upper expansion piece (1) and the lower expansion piece (2) each have a groove opening toward the center line at one end, and the groove of the upper expansion piece (1) opens downward, and the groove of the lower expansion piece (2) opens upward. The upper expansion piece (1) and the lower expansion piece (2) are disposable. The lower expansion piece connecting rod (3) has three bosses, and the upper expansion piece connecting rod (7) has one boss. The bevel gear steering gear 1 (8) has a bevel gear and a groove, and the bevel gear steering gear 2 (11) has a bevel gear and a groove. The slot (12) has two grooves, and the upper ends of the screw rod 1 (4) and the screw rod 2 (9) each have a boss.

3. The electric vaginal dilator according to claim 1, characterized in that: The unlocker (14) is hinged to the base (15), and the unlocker (14) is rotated counterclockwise to push the card slot (12) to move downward. The control chip (23) and the battery (24) are installed in the power source and the control box (25).

4. The electric vaginal dilator according to claim 1, characterized in that: The electromagnet (26) is installed on the base (15), and the electromagnet (26) pushes the card slot (12) to move downward. The action of the electromagnet (26) is controlled by the button (20). The button (20), the control chip (23), and the battery (24) are respectively installed on the handle (27), and the handle (27) and the base (15) are hinged.

5. The electric vaginal dilator according to claim 2 or 3, characterized in that: The control chip (23) receives signals from sensor 1 (18) and sensor 2 (19), controls the rotation of motor 1 (21) and motor 2 (22), and analyzes the rotation resistance of screw rod 1 (4) and screw rod 2 (9) according to the signals, thereby analyzing the difficulty of expanding the inner and outer sides of the vagina and the limits of the expansion of the inner and outer sides, so that the vaginal dilator can fully expand the outer and inner sides of the vagina and keep the force applied to the tissue within a safe range.

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