A thermostatic visual gynecological speculum

Abstract

This invention discloses a constant-temperature visual gynecological speculum, relating to the field of medical device technology. It includes: a first and a second dilatation piece for examining gynecological patients; a constant-temperature mechanism to maintain a constant temperature for the first and second dilatation pieces; an expansion mechanism to assist in sliding expansion between the first and second dilatation pieces; and a limiting mechanism to limit and fix the upper connecting frame and the lower receiving frame. Through the built-in constant-temperature mechanism, specifically the heating wires located inside the first and second dilatation pieces, combined with a heat spreader plate for uniform heating, and precise temperature control by a temperature sensor, the dilatation pieces maintain a constant temperature when in contact with the human body. This completely solves the clinical pain point of traditional metal or plastic speculum, where low temperatures cause vaginal contraction, discomfort, and even obstruct the doctor's field of vision, significantly improving patient comfort during examination.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a constant temperature visual gynecological speculum. Background Technology

[0002] A gynecological speculum, also known as a vaginal speculum, is an indispensable medical instrument in gynecological clinical examinations and treatments. It is typically made of medical-grade stainless steel or transparent plastic, and has a duckbill-shaped structure consisting of two parts, upper and lower, with the opening and closing controlled by an adjustable locking mechanism or screw mechanism. During use, the doctor gently inserts it into the patient's vagina and slowly opens it, using its dilating effect to expose the vaginal walls and cervix, allowing direct observation of the vaginal mucosa, the characteristics of secretions, the morphology of the cervix, and any lesions. It also provides a clear field of vision and operating space for procedures such as taking secretion samples, cervical cytology examinations (e.g., TCT), HPV testing, insertion of intrauterine devices, or minor surgical procedures (e.g., biopsy, polyp removal).

[0003] Current gynecological speculum is inserted directly into the patient's vagina for observation. Since most gynecological speculum are made of metal or plastic, their temperature is lower than the body temperature during use. This can cause discomfort to the patient, especially in cold winter temperatures, where the low temperature can stimulate vaginal contractions, making it difficult for medical staff to observe the affected area. Summary of the Invention

[0004] The purpose of this invention is to provide a constant temperature visual gynecological speculum to solve the problem that the low temperature of existing gynecological speculum causes discomfort to patients during examination.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a constant-temperature visual gynecological speculum, comprising a first dilator and a second dilator, used for examining gynecological patients, and further comprising: a constant-temperature mechanism, fixedly disposed on the first and second dilators, for maintaining the first and second dilators at a constant temperature, the constant-temperature mechanism comprising a plurality of heating wires fixedly disposed inside the first and second dilators; and an expansion mechanism, fixedly disposed on the first and second dilators, for assisting in the movement between the first and second dilators. For sliding expansion, the expansion mechanism includes an upper connecting frame fixedly disposed on the top of the first expansion piece, a lower receiving frame fixedly disposed on the top of the second expansion piece, and the upper connecting frame and the lower receiving frame are slidably positioned relative to each other; a limiting mechanism is disposed on the upper connecting frame and the lower receiving frame to limit and fix the upper connecting frame and the lower receiving frame, the limiting mechanism includes a limiting block fixedly disposed on the bottom of the upper connecting frame, a toothed plate elastically slidably disposed on the top of the lower receiving frame, and the limiting block engaging with the toothed plate.

[0006] Furthermore, the constant temperature mechanism also includes a heat spreader plate fixedly disposed inside the expansion plate one and the expansion plate two, and a temperature sensor is fixedly disposed on the heat spreader plate.

[0007] Furthermore, the constant temperature mechanism also includes electrical wires fixedly installed on the upper connecting frame and the lower supporting frame, and the electrical wires are connected together to be electrically connected to an external power source.

[0008] Furthermore, the expansion mechanism also includes two limiting sliders symmetrically fixed on both sides of the bottom of the upper connecting frame, and limiting grooves are provided on both sides of the top of the lower receiving frame; and the two limiting sliders are respectively limited and slidably connected in the two limiting grooves.

[0009] Furthermore, the expansion mechanism also includes several anti-slip grooves formed on the top of the upper connecting frame and the bottom of the lower supporting frame.

[0010] Furthermore, the limiting mechanism also includes a lower pressure block slidably disposed on the top of the upper connecting frame. Two sliding shafts are fixedly disposed at the bottom of the lower pressure block, and two lower pressure plates are fixedly disposed on the lower pressure block through the two sliding shafts. Two springs are fixedly disposed at the bottom of the lower pressure block, and the two springs are sleeved on the two sliding shafts, with the other end of the springs fixedly disposed inside the upper connecting frame.

[0011] Furthermore, the limiting mechanism also includes several springs fixedly disposed at the bottom of the toothed plate, and the toothed plate is elastically slidably disposed at the top of the lower support frame by the several springs.

[0012] Furthermore, both expansion piece one and expansion piece two have observation ports at their tops.

[0013] Compared with existing technologies, the present invention provides a constant temperature visual gynecological speculum. By inserting dilators one and two into the patient's vagina in a closed configuration, and then pressing the lower pressure block located at the top of the upper connecting frame, the lower pressure block, via a sliding shaft, overcomes the elastic force of spring one, causing the lower pressure plate to move downwards. The lower pressure plate then presses against the elastically set retaining plate below, causing the retaining plate to move downwards against the elastic force of spring two, thereby releasing the retaining plate from the limiting block fixed at the bottom of the upper connecting frame. Next, medical personnel push the anti-slip groove on the upper connecting frame or the lower receiving frame, causing the limiting slider at the bottom of the upper connecting frame to slide along the limiting groove on the lower receiving frame, thereby causing dilators one and two to slide relative to each other to the desired degree of dilation. After releasing the lower pressure block, spring one pulls back the lower pressure plate, and spring two pushes the retaining plate back to reset, causing the retaining plate to re-lock the limiting block to the dilation state. At this time, medical personnel can examine the patient's affected area through the observation ports at the top of dilators one and two. The core advantages of this device are: through its built-in constant temperature mechanism, namely the heating wires inside the first and second expansion plates, which work with the heat spreader to provide uniform heating, and the precise temperature control by the temperature sensor, the expansion plates maintain a constant temperature when in contact with the human body. This completely solves the clinical pain point of traditional metal or plastic speculums, which cause vaginal contraction due to low temperature, resulting in discomfort and even affecting the doctor's field of vision, significantly improving the patient's examination comfort. At the same time, its press-type limiting mechanism is easy to operate and can be stably locked after expansion, avoiding accidental changes in the expansion state and providing the doctor with a clear and stable examination field of vision. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a schematic diagram of the overall structure of the gynecological speculum provided in an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the expansion piece structure provided in an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the expansion piece 2 structure provided in an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the internal constant temperature structure of the expansion plate provided in an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the lower pressure plate connection structure provided in an embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of the toothed plate connection structure provided in an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Expansion plate one; 2. Expansion plate two; 3. Observation port; 4. Lower pressure block; 5. Upper connecting frame; 6. Lower receiving frame; 7. Anti-slip groove; 8. Electrical wire; 9. Limiting slider; 10. Limiting block; 11. Lower pressure plate; 12. Limiting groove; 13. Toothed plate; 14. Heat spreader plate; 15. Heating wire; 16. Temperature sensor; 17. Sliding shaft; 18. Spring one; 19. Spring two. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] As attached Figure 1 To be continued Figure 6 As shown:

[0025] Example 1:

[0026] This invention provides a constant-temperature visual gynecological speculum, including a first dilator 1 and a second dilator 2, for use in examining gynecological patients. It further includes: a constant-temperature mechanism, fixedly disposed on the first dilator 1 and the second dilator 2, for maintaining the first dilator 1 and the second dilator 2 at a constant temperature; the constant-temperature mechanism includes a plurality of heating wires 15 fixedly disposed inside the first dilator 1 and the second dilator 2; and an expansion mechanism, fixedly disposed on the first dilator 1 and the second dilator 2, for assisting in sliding expansion between the first dilator 1 and the second dilator 2. The expansion mechanism includes an upper connecting frame 5 fixedly mounted on the top of the expansion piece 1, and a lower receiving frame 6 fixedly mounted on the top of the expansion piece 2, with the upper connecting frame 5 and the lower receiving frame 6 being limited and slidably positioned together; a limiting mechanism is provided on the upper connecting frame 5 and the lower receiving frame 6 for limiting and fixing the upper connecting frame 5 and the lower receiving frame 6, the limiting mechanism including a limiting block 10 fixedly mounted on the bottom of the upper connecting frame 5, and a toothed plate 13 elastically slidably mounted on the top of the lower receiving frame 6, with the limiting block 10 engaging with the toothed plate 13;

[0027] Simultaneously, by closing and inserting dilators 1 and 2 into the patient's vagina, and then pressing the lower pressure block 4 located at the top of the upper connecting frame 5, the lower pressure block 4, through the sliding shaft 17, overcomes the elastic force of the spring 18, causing the lower pressure plate 11 to move downward. The lower pressure plate 11 then presses the elastically set retaining plate 13 below, causing the retaining plate 13 to overcome the elastic force of the spring 2 19 and move downward, thereby releasing the retaining plate 13 from the limiting block 10 fixed at the bottom of the upper connecting frame 5. Then, the medical staff pushes the upper connecting frame 5... Alternatively, the anti-slip groove 7 on the lower support frame 6 allows the limiting slider 9 at the bottom of the upper connecting frame 5 to slide along the limiting groove 12 on the lower support frame 6, thereby causing the expansion piece 1 and expansion piece 2 to slide relative to each other to the required degree of expansion; after releasing the lower pressure block 4, the spring 18 pulls back the lower pressure plate 11, and the spring 2 19 pushes the retaining plate 13 back to reset, so that the retaining plate 13 re-locks the limiting block 10 to lock the expansion state; at this time, medical staff can examine the patient's affected area through the observation port 3 at the top of the expansion piece 1 and expansion piece 2. The core advantages of this device are as follows: Through the built-in constant temperature mechanism, namely the heating wire 15 set inside the expansion plate 1 and expansion plate 2, which works in conjunction with the heat spreader 14 to provide uniform heating, and the temperature sensor 16 to precisely control the temperature, the expansion plate maintains a constant temperature when in contact with the human body. This completely solves the clinical pain point of traditional metal or plastic speculums, which cause the patient's vagina to contract due to cold, resulting in discomfort and even affecting the doctor's field of vision, due to excessively low temperature. This significantly improves the patient's examination comfort. At the same time, its press-type limiting mechanism is easy to operate and can be stably locked after expansion, avoiding accidental changes in the expansion state and providing the doctor with a clear and stable field of vision.

[0028] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The constant temperature mechanism includes a heating wire 15, a heat spreader 14, a temperature sensor 16, and an electrical wire 8;

[0029] By incorporating dilatation piece 1 and dilatation piece 2, medical personnel can insert dilatation piece 1 and dilatation piece 2 into the vagina of gynecological patients during examinations, and then control the dilatation between dilatation piece 1 and dilatation piece 2 to achieve the purpose of examining the vagina. An upper connecting frame 5 is fixedly connected to the top of dilatation piece 1, and a lower receiving frame 6 is fixedly connected to the top of dilatation piece 2. Both the upper connecting frame 5 and the lower receiving frame 6 are provided with observation ports 3, allowing medical personnel to examine the patient's affected area through the observation ports 3 when examining through dilatation piece 2.

[0030] Meanwhile, several heating wires 15 are fixedly connected inside both expansion pad 1 and expansion pad 2, and a heat spreader 14 is also fixedly connected inside both expansion pad 1 and expansion pad 2. The heat spreader 14 and the heating wires 15 are fixedly connected inside expansion pad 1 and expansion pad 2, so that when expansion pad 1 and expansion pad 2 are used, the heating wires 15 can generate heat, and the heat spreader 14 can evenly conduct the heat emitted by the heating wires 15 to every part of expansion pad 1 and expansion pad 2. Thus, during the use of expansion pad 1 and expansion pad 2, the expansion pad 1 and expansion pad 2 can maintain a constant temperature during insertion into the patient, thereby avoiding patient discomfort caused by the low temperature of expansion pad 1 and expansion pad 2, thus improving the patient's examination comfort, preventing the patient's vagina from contracting due to excessive cold stimulation, and facilitating medical staff to examine the patient's affected area.

[0031] Secondly, electrical wires 8 are fixedly connected to both the upper connecting frame 5 and the lower supporting frame 6. Two electrical wires 8 are combined and then electrically connected to an external power source. This allows the heating wires 15 inside the expansion piece 1 and expansion piece 2 to be powered by the electrical wires 8 during use. Several temperature sensors 16 are fixedly connected inside the expansion piece 1 and expansion piece 2, enabling them to sense the internal temperature of the expansion piece 1 and expansion piece 2 during use. This temperature information is transmitted to the information transmission module and command control module within the upper connecting frame 5 and the lower supporting frame 6, facilitating the regulation of the operating temperature of the expansion piece 1 and expansion piece 2. Control methods include, but are not limited to, remote control, wireless Bluetooth connection to electronic devices, and wireless Wi-Fi connection to electronic devices.

[0032] Example 2:

[0033] refer to Figure 1 , Figure 2 and Figure 3 The expansion mechanism includes an upper connecting frame 5, a lower supporting frame 6, an anti-slip groove 7, a limiting slider 9, and a limiting slide 12;

[0034] By fixing an upper connecting frame 5 to the top of the expansion piece 1 and a lower receiving frame 6 to the top of the expansion piece 2, the upper connecting frame 5 and the lower receiving frame 6 can be controlled to slide relative to each other when expansion is required between the expansion pieces 1 and 2 during use. This achieves the purpose of controlling the expansion between the expansion pieces 1 and 2, allowing the expansion pieces 1 and 2 to dilate and open the patient's vagina, thus facilitating medical staff to examine the patient's affected area through the observation port 3.

[0035] Meanwhile, limit sliders 9 are fixedly connected to both sides of the bottom of the upper connecting frame 5, and limit grooves 12 are opened on both sides of the top of the lower supporting frame 6. Two limit sliders 9 are respectively limited and slidably connected in the two limit grooves 12, so that the upper connecting frame 5 and the lower supporting frame 6 can be adjusted horizontally through the two limit sliders 9 and the limit grooves 12, thereby driving the expansion piece 1 and the expansion piece 2 to expand. However, the limiting sliding structure of the limit sliders 9 and the limit grooves 12 prevents the upper connecting frame 5 and the lower supporting frame 6 from sliding vertically, thereby preventing the upper connecting frame 5 and the lower supporting frame 6 from falling off directly, and thus preventing the expansion piece 1 and the expansion piece 2 from being misaligned.

[0036] Secondly, several anti-slip grooves 7 are provided on the top of the upper connecting frame 5 and the bottom of the lower supporting frame 6. During use, when the upper connecting frame 5 and the lower supporting frame 6 slide and drive the expansion plate 1 and expansion plate 2 to expand, the anti-slip grooves 7 can assist medical staff in pushing the upper connecting frame 5 and the lower supporting frame 6 to slide together. The anti-slip grooves 7 can increase the friction between the surfaces of the upper connecting frame 5 and the lower supporting frame 6, thereby improving the ease of use of the upper connecting frame 5 and the lower supporting frame 6.

[0037] Example 3:

[0038] refer to Figure 2 , Figure 3 , Figure 5 and Figure 6 The limiting mechanism includes a limiting block 10, a toothed plate 13, a lower pressing block 4, a sliding shaft 17, a spring 18, and a lower pressing plate 11;

[0039] By fixing a limiting block 10 to the bottom of the upper connecting frame 5 and elastically sliding a toothed plate 13 to the top of the lower supporting frame 6, the limiting block 10 can engage with the top of the toothed plate 13 when the upper connecting frame 5 and the lower supporting frame 6 slide and adjust each other. The groove at the top of the toothed plate 13 limits and engages the limiting block 10, thereby achieving the purpose of limiting and fixing the upper connecting frame 5. This prevents the upper connecting frame 5 and the lower supporting frame 6 from sliding freely, and thus prevents the expansion piece 1 and the expansion piece 2 from expanding or contracting randomly. This allows medical staff to perform continuous and stable expansion examinations when examining the patient's affected area with the expansion piece 1 and the expansion piece 2 in conjunction with the observation port 3, improving the convenience and stability of using the expansion piece 1 and the expansion piece 2.

[0040] Meanwhile, a lower pressure block 4 is slidably connected to the top of the upper connecting frame 5, and two sliding shafts 17 are fixedly connected to the bottom of the lower pressure block 4. Two lower pressure plates 11 are fixedly connected to the bottom of the two sliding shafts 17 respectively, and two springs 18 are fixedly connected to the bottom of the lower pressure block 4. The two springs 18 are sleeved on the two sliding shafts 17, and the other end of the springs 18 is fixedly connected to the inside of the upper connecting frame 5. This allows the lower pressure block 4 to be elastically slidably connected to the top of the upper connecting frame 5 through the sliding shafts 17 and the springs 18, while the two sliding shafts 17 can be elastically slidably connected to the bottom of the upper connecting frame 5. Furthermore, several springs 2 19 are fixedly connected to the bottom of the toothed plate 13, allowing the toothed plate 13 to be elastically slidably connected to the top of the lower supporting frame 6 through the several springs 2 19. This allows the upper connecting frame 5 and... When the lower support frame 6 is used for sliding adjustment, the lower pressure block 4 must be pressed first, so that the two sliding shafts 17 drive the two lower pressure plates 11 to press down the toothed plate 13. At this time, after the toothed plate 13 is pressed down, it can release the limiting engagement and fixation of the limiting block 10, so that the upper connecting frame 5 and the lower support frame 6 can be released from the limiting fixation and used for sliding adjustment. After the sliding adjustment between the upper connecting frame 5 and the lower support frame 6 is completed, the pressure on the lower pressure block 4 is released. At this time, the sliding shafts 17 and the lower pressure plates 11 will release the pressure on the toothed plate 13 under the elastic pull of the spring 18. The toothed plate 13 will rise again under the elastic rebound of several springs 19, so that the groove at its top will once again engage and limit the limiting block 10, thereby achieving the purpose of limiting engagement and fixing between the upper connecting frame 5 and the lower support frame 6.

[0041] Working principle: Medical staff first gently insert the dilator 1 and dilator 2, which are in a closed state, into the patient's vagina. Then, to adjust the dilator to a suitable degree of expansion for observation, the medical staff needs to operate the limiting mechanism by pressing the lower pressure block 4, which is slidably mounted on the top of the upper connecting frame 5, with their fingers. When the lower pressure block 4 is subjected to force, it drives the two sliding shafts 17 fixedly connected to its bottom to slide downwards along the inside of the upper connecting frame 5, overcoming the elastic force of the spring 18. The two sliding shafts 17 then drive the two lower pressure plates 1 fixedly connected to their bottoms. 1. Simultaneously moving downwards, the lower pressure plate 11 directly presses against and pushes the retaining plate 13 located on the top of the lower support frame 6, causing the retaining plate 13 to move downwards against the elastic force of several springs 19 at its bottom. After the retaining plate 13 moves downwards, the groove on its top disengages from the limiting block 10 that was originally engaged with it, thereby releasing the limiting and fixing state between the upper connecting frame 5 and the lower support frame 6. After the limiting is released, medical staff can use the several anti-slip grooves 7 on the top of the upper connecting frame 5 and the bottom of the lower support frame 6 to adjust the upper connecting frame 5 or the lower support frame 6. When the receiving frame 6 applies a pushing or pulling force, the limiting sliders 9, which are symmetrically fixed on both sides of the bottom of the upper connecting frame 5, slide smoothly horizontally along the limiting slide grooves 12 opened on both sides of the top of the lower receiving frame 6. This sliding process causes the expansion plates 1 and 2 to expand relative to each other at the required amplitude, thereby dilating the patient's vagina to a suitable opening size for examination. When the expansion plates 1 and 2 slide to the ideal dilation position, the medical staff releases the pressure on the lower pressure block 4. At this time, the sliding shaft 17 and the lower pressure plate 11 are elastically pulled back by the spring 18. The device automatically resets upwards, releasing the downward pressure on the retaining plate 13. Simultaneously, the retaining plate 13 automatically resets upwards under the elastic rebound of several springs 19, causing the groove at its top to re-engage tightly with the limiting block 10. This re-locks the relative position between the upper connecting frame 5 and the lower receiving frame 6, ensuring that the dilatation piece will not shift or loosen due to accidental contact during the examination. Finally, medical personnel can clearly observe the condition of the patient's vaginal wall and cervix through the observation ports 3 opened at the top of both dilatation pieces 1 and 2. Throughout the entire process, the constant temperature mechanism operates continuously. Several heating wires 15 fixed inside dilatation pieces 1 and 2 are energized and generate heat. The heat is evenly conducted to the entire surface of the dilatation piece through the fixed heat spreader 14. Simultaneously, the temperature sensor 16 senses the temperature in real time and regulates it through the control module connected by the wire 8, ensuring that the dilatation piece maintains a constant temperature suitable for the human body, thus avoiding cold stimulation and discomfort caused to the patient due to excessively low instrument temperature.

[0042] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A constant temperature visual gynecological speculum comprising a first dilator blade (1) and a second dilator blade (2) for use in examining a gynecological patient, characterized in that, Also includes: The constant temperature mechanism is fixedly installed on expansion plate one (1) and expansion plate two (2) to keep expansion plate one (1) and expansion plate two (2) at a constant temperature. The constant temperature mechanism includes a number of heating wires (15) fixedly installed inside expansion plate one (1) and expansion plate two (2). An expansion mechanism is fixedly installed on expansion piece one (1) and expansion piece two (2) to assist expansion piece one (1) and expansion piece two (2) in sliding expansion. The expansion mechanism includes an upper connecting frame (5) fixedly installed on the top of expansion piece one (1) and a lower receiving frame (6) fixedly installed on the top of expansion piece two (2). The upper connecting frame (5) and the lower receiving frame (6) are limited to sliding between each other. A limiting mechanism is provided on the upper connecting frame (5) and the lower supporting frame (6) for limiting and fixing the upper connecting frame (5) and the lower supporting frame (6). The limiting mechanism includes a limiting block (10) fixedly provided at the bottom of the upper connecting frame (5). A toothed plate (13) is elastically slidably provided on the top of the lower supporting frame (6), and the limiting block (10) is engaged on the toothed plate (13).

2. The thermostatic visual gynecological speculum according to claim 1, characterized in that, The constant temperature mechanism also includes a heat spreader (14) fixedly disposed inside the expansion plate one (1) and the expansion plate two (2), and a temperature sensor (16) is fixedly disposed on the heat spreader (14).

3. The thermostatic visual gynecological speculum according to claim 2, characterized in that, The constant temperature mechanism also includes an electrical wire (8) fixedly installed on the upper connecting frame (5) and the lower supporting frame (6), and the electrical wire (8) is connected together to be electrically connected to an external power source.

4. The thermostatic visual gynecological speculum according to claim 1, characterized in that, The expansion mechanism also includes two limiting sliders (9) symmetrically fixed on both sides of the bottom of the upper connecting frame (5), and limiting grooves (12) are provided on both sides of the top of the lower supporting frame (6). The two limiting sliders (9) are respectively limited and slidably connected in the two limiting grooves (12).

5. A constant temperature visual gynecological speculum according to claim 4, characterized in that, The expansion mechanism also includes several anti-slip grooves (7) formed on the top of the upper connecting frame (5) and the bottom of the lower supporting frame (6).

6. The thermostatic visual gynecological speculum according to claim 1, characterized in that, The limiting mechanism also includes a lower pressure block (4) that is slidably disposed on the top of the upper connecting frame (5). Two sliding shafts (17) are fixedly disposed at the bottom of the lower pressure block (4). Two lower pressure plates (11) are fixedly disposed on the lower pressure block (4) through the two sliding shafts (17). The bottom of the lower pressure block (4) is fixedly provided with two springs (18), the two springs (18) are sleeved on the two sliding shafts (17), and the other end of the springs (18) is fixedly provided inside the upper connecting frame (5).

7. A constant temperature visual gynecological speculum according to claim 6, characterized in that, The limiting mechanism also includes several springs (19) fixedly disposed at the bottom of the toothed plate (13), and the toothed plate (13) is elastically slidably disposed on the top of the lower support frame (6) by the several springs (19).

8. A constant temperature visual gynecological speculum according to claim 1, characterized in that, Both the expansion piece one (1) and the expansion piece two (2) have observation ports (3) at their top.

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