Clinical examination device for oral teeth and dental pulp

Abstract

The invention belongs to the technical field of medical equipment, and discloses an oral cavity tooth and dental pulp clinical examination device which comprises a base, the base is connected with a head fixing assembly and a visual diagnosis assembly, the head fixing assembly comprises a head supporting plate and a box body, the box body is connected with a clamping assembly, the clamping assembly comprises a second spring and a wedge-shaped seat, the second spring is connected with a sliding rod, and the wedge-shaped seat is connected with the sliding rod. The sliding rod is connected with a linkage rod, the linkage rod is connected with a wedge-shaped sliding block, and the wedge-shaped sliding block is connected with a clamping plate. The visual diagnosis assembly comprises a control display center and a visual diagnosis base body, the control display center is connected with a sleeve, the sleeve is connected with an operating rod, the visual diagnosis base body is connected with a camera, a non-contact distance sensor, a protective mirror and a fan, the fan is communicated with an air inlet head, and the visual diagnosis base body is provided with an air outlet. The head fixing assembly is used for fixing the head of a patient, the visual diagnosis assembly is used for observing conditions of diseased teeth and surrounding tissues of the diseased teeth, the examination process is stable, obtained images are clear, and the diagnosis and treatment efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a clinical examination device for dental pulp and endodontics. Background Technology

[0002] In the clinical diagnosis of dental caries and pulp diseases, visual inspection is the primary and crucial step in assessing the condition. Healthcare professionals observe changes in the color of the affected tooth (such as darkening or reddening), its surface morphology (such as defects, cracks, and the extent of cavities), and the condition of surrounding tissues to provide the most direct diagnostic evidence for caries, pulp necrosis, periapical disease, and other conditions. The accuracy and efficiency of this process highly depend on whether the examination instruments can provide a clear, stable, and accurate field of view. Therefore, the imaging capabilities and maneuverability of the examination tools directly affect the reliability of early lesion detection and diagnosis.

[0003] Existing dental endoscopy devices include oral mirrors combined with intraoral endoscopes. During use, medical staff hold and move the mirror or camera to adjust the field of view. However, in the confined space of the oral cavity, this operation is inconvenient and difficult to maintain stability. Furthermore, the warm, moist air exhaled by the patient condenses into fog on the cooler lens, severely obstructing the view and requiring frequent removal and wiping, disrupting the continuity of the examination and reducing the accuracy of oral cavity observation. Additionally, during the insertion of the mirror or camera into the oral cavity, its metal casing or lens can easily come into direct contact with or scrape the cheek, tongue, and gum mucosa. This not only causes pain, bleeding, and potential infection for the patient, but also contaminates the lens with saliva or blood, immediately causing blurred images and forcing the examination to be interrupted for cleaning, significantly reducing diagnostic efficiency. Summary of the Invention

[0004] This invention aims to provide a clinical examination device for oral cavity and dental pulp. It utilizes a head fixation component to stabilize the patient's head, and a camera in the visual examination component to observe the affected tooth and surrounding tissues. During observation, airflow removes water vapor from the protective lens to ensure clear visibility. A non-contact distance sensor detects the distance between the lens and the oral cavity walls, lingual mucosa, and gingiva, preventing contact or scratching of these surfaces and ensuring efficient diagnosis and treatment. This invention solves the problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A clinical examination device for dental endodontics includes a base, on which a head fixation component and an inspection component are adjustablely connected. The head fixation component includes a headrest for placing the head. The inspection component includes a control and display center and an inspection base. The control and display center is rotatably connected to a sleeve, and the sleeve is connected to an operating lever. The inspection base is detachably connected to the operating lever. The inspection base is connected to a camera, a non-contact distance sensor, a protective mirror, and a fan. The protective mirror is connected to the opening of the inspection base. The camera is located within the cavity formed by the inspection base and the protective mirror. The non-contact distance sensor... The sensor is connected to the end face of the diagnostic lens substrate, and the end of the non-contact distance sensor away from the diagnostic lens substrate is a smooth surface; the fan is connected to an air inlet, and the diagnostic lens substrate is provided with an air outlet. Both the air inlet and the air outlet are located in the cavity formed by the diagnostic lens substrate and the protective mirror; the camera, the non-contact distance sensor, and the fan are all electrically connected to the control and display center, and the control and display center also displays the image captured by the camera and the distance between the non-contact distance sensor and the obstacle, and controls the operation of the fan according to the distance. The closer the non-contact distance sensor is to the obstacle, the greater the air output power of the fan.

[0007] Furthermore, the base is connected to a motor, the output shaft of the motor is fixedly connected to a lead screw that is rotatably connected to the base, the lead screw is threadedly connected to a sliding seat that is slidably connected to the base, and the control display center is connected to the sliding seat through a second telescopic member.

[0008] Furthermore, the second telescopic member is an electric telescopic rod, and both the motor and the second telescopic member are electrically connected to the control and display center. The handle of the operating rod is connected to an operation button that controls the operation of the motor and the second telescopic member.

[0009] Furthermore, the sleeve is rotatably connected to the upper side of the control display center via a connecting frame. The sleeve is rotatably connected to the connecting frame, and the operating lever is rotatably connected to the sleeve. In the three-dimensional space of XYZ, the connecting frame rotates relative to the control display center in the XY plane, the sleeve rotates relative to the connecting frame in the YZ plane, and the operating lever rotates relative to the sleeve in the ZX plane.

[0010] Furthermore, the opening end of the visual diagnostic substrate is annular, and the non-contact distance sensor is disposed on the annular end face to form a complete detection ring; multiple air inlets and outlets are provided, and the airflow guided by the multiple air inlets converges at the center of the protective mirror, and the multiple air outlets are distributed around the non-contact distance sensor.

[0011] Furthermore, the diagnostic substrate is connected to the operating rod via threads; the air outlet is inclined upward along the side wall of the diagnostic substrate, and the air outlet end of the air outlet is inclined downward.

[0012] Furthermore, the head fixing assembly also includes a housing, which is connected to the base via a first telescopic member; the housing is connected to a pair of clamping assemblies, each clamping assembly including a second spring and a wedge-shaped seat, the free end of the second spring being connected to a slide rod slidably connected to the housing, the slide rod being slidably connected to a linkage rod, the linkage rod being fixedly connected to a wedge-shaped slider that slidably abuts against the wedge-shaped inclined surface of the wedge-shaped seat, the wedge-shaped slider being connected to a clamping plate, and the head support plate being disposed between the two clamping plates of the pair of clamping assemblies.

[0013] Furthermore, the head support plate is slidably inserted through the box body, and the head support plate and the box body are connected by a first spring, and the head support plate is fixedly connected to the slide rod.

[0014] Furthermore, both the head support plate and the two clamping plates are provided with arc-shaped portions, and the arc-shaped groove of the head support plate faces upward, while the arc-shaped grooves of the two clamping plates are arranged opposite each other in a "()" shape.

[0015] Furthermore, the inner sidewall of the housing and the slide rod are both provided with slide grooves, and the slide rod and the linkage rod are both provided with protrusions that cooperate with the slide grooves. The protrusions are slidably disposed on the inner side of the slide grooves.

[0016] The principles and beneficial effects of the technical solution are as follows:

[0017] 1. The present invention provides a clinical examination device for dental pulp and endodontics, which connects a head fixation component and a visual examination component on a base. The visual examination component has a camera, a non-contact distance sensor, a protective mirror, and a fan connected to its base. When using this examination device, the patient's head is placed on the headrest of the head fixation component. The camera is used to observe the condition of the affected tooth and its surrounding tissues. During the observation, airflow is used to remove water mist from the surface of the protective mirror to ensure the clarity of the field of vision. The non-contact distance sensor is used to detect the distance between the protective mirror and the oral cavity sidewall, lingual mucosa, and gingiva to avoid contact or scratching between the protective mirror and the oral cavity sidewall, lingual mucosa, and gingiva, thus ensuring the efficiency of the examination. In addition, the control display center displays images captured by the camera and the distance between the non-contact distance sensor and obstacles, allowing medical staff to more intuitively understand and judge the examination of the dental pulp. The control display center controls the operation of the fan based on the distance between the non-contact distance sensor and the obstacle. The closer the non-contact distance sensor is to the obstacle, the greater the air output power of the fan. Since the closer the contact distance sensor is to the obstacle, the more water mist the patient exhales onto the protective lens, the greater the air output power can ensure the effectiveness of removing water mist. Moreover, the airflow from the air outlet acts as a dynamic "virtual safety airbag" for the visual examination substrate. The airflow is blocked by the inner wall of the oral cavity, the lingual mucosa, and the gums, forming a "force feedback anti-collision" effect. This generates a slight reverse damping force against further approach of the visual examination substrate, forming a tactile resistance warning, further reducing the probability of the protective lens coming into contact with or scratching the inner wall of the oral cavity, the lingual mucosa, and the gums.

[0018] 2. The present invention provides a clinical examination device for dental pulp and endodontics, wherein a base is connected to a motor, the motor is connected to a lead screw rotatably connected to the base, the lead screw is connected to a sliding seat slidably connected to the base, and a control display center is connected to the sliding seat according to the second telescopic component, the motor is started, and the control display center moves along the relative straight line of the base under the action of the lead screw, the sliding seat and the base, so as to adjust the distance between the inspection base and the head fixation component to adapt to different clinical needs. The second telescopic component is an electric telescopic rod. Both the motor and the second telescopic component are electrically connected to the control and display center. The handle of the operating rod is connected to the operation buttons that control the operation of the motor and the second telescopic component. Medical staff can directly control the height and distance of the visual examination base relative to the head fixation component according to the operation buttons, which further improves the convenience of operation and can effectively improve the efficiency of diagnosis and treatment. In the three-dimensional space of XYZ, the connecting frame rotates relative to the control and display center in the XY plane, the sleeve rotates relative to the connecting frame in the YZ plane, and the operating rod rotates relative to the sleeve in the ZX plane. Medical staff can flexibly and accurately adjust the position and posture of the visual examination base and the camera in three-dimensional space through the operating rod, so as to realize the exploration of different areas in the oral cavity, especially the proximal surfaces and subgingival areas that are difficult to observe directly, without blind spots. The operation is convenient and the field of vision is stable.

[0019] 3. The present invention provides a clinical examination device for dental pulp and endodontics. The opening end of the inspection substrate is annular, and a non-contact distance sensor is set on the annular end face to form a "detection ring," enabling it to monitor the distance between the front end of the inspection substrate and the oral mucosa in real time. Multiple air inlets and outlets are provided, with the airflow from the air inlets converging at the center of the protective lens. Multiple outlets are distributed around the non-contact distance sensor. The airflow generated by the fan is introduced through the air inlets and blown out from the surrounding outlets. A circulating air curtain is formed between the airflow protective lens and the camera lens to prevent the moisture exhaled by the patient from condensing into fog on the lens. Combined with the working effect of the fan and the non-contact distance sensor, when the sensor detects the probe approaching the tissue (distance decreases), the fan power is automatically increased to enhance local airflow to cope with the more foggy conditions; when the probe moves away, the power is reduced to reduce interference and energy consumption, resulting in an adaptive defogging mechanism. This ensures a clear field of view at any operating distance without interrupting the examination for wiping, significantly improving diagnostic efficiency. In addition, the diagnostic substrate is connected to the operating rod via threads to facilitate disassembly, cleaning, and disinfection after use. The air outlet is tilted upward along the side wall of the diagnostic substrate, and the air outlet end is tilted downward. This effectively guides the airflow that removes water mist out of the diagnostic substrate and acts on the inner wall of the oral cavity, the lingual mucosa, and the gums to form a "virtual safety airbag." It also prevents liquids in the oral cavity (saliva, blood, etc.) from flowing back into the inner side of the diagnostic substrate, reducing pollution to the inner environment of the diagnostic substrate.

[0020] 4. The present invention provides a clinical examination device for dental pulp and endodontics. The head fixation component housing is connected to the base via a first telescopic member, allowing the height of the head fixation component to be adjusted according to clinical needs. The housing is connected to a pair of clamping components. The sliding rods of the pair of clamping components are connected to the housing via a second spring, and the sliding rods are connected to a linkage rod. The linkage rod is connected to a wedge-shaped slider that slides against the wedge-shaped inclined surface of the wedge-shaped seat. The wedge-shaped slider is connected to a clamping plate. The head support plate slides through the housing, and the head support plate is connected to the housing via a first spring. The head support plate is fixedly connected to the sliding rod. When the patient's head (chin) is placed on the head support plate, the head support plate moves downward under the action of gravity, overcoming the action of the first spring. This causes the sliding rod to move downward over the action of the second spring. As a result, the two clamping plates move downward under the action of the linkage rod, the wedge-shaped slider, and the wedge-shaped seat, while simultaneously moving towards each other, clamping and fixing the left and right sides (both sides of the face) of the patient's head. This effectively improves the stability of the head / mouth during the examination, thereby ensuring the accuracy and efficiency of the examination. The head support plate and the two clamping plates are all equipped with arc-shaped sections, with the arc-shaped groove of the head support plate facing upwards. The arc-shaped grooves of the two clamping plates are arranged opposite each other in a "()" shape, making the head support plate and clamping plates more ergonomic and further improving the fixation effect on the head. The inner side wall of the box and the sliding rod are both provided with sliding grooves. The sliding rod and the linkage rod are both provided with protrusions that cooperate with the sliding grooves. The protrusions slide in the sliding grooves, which can guide and limit the movement between the two (the sliding rod relative to the box and the linkage rod relative to the sliding rod), thereby ensuring the uniformity and stability of the relative movement, and further ensuring the stability and functionality of the entire device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a clinical examination device for dental pulp and endodontics according to the present invention;

[0022] Figure 2 This is a side view of a clinical examination device for dental pulp and endodontics according to the present invention.

[0023] Figure 3 for Figure 2 Sectional view of AA;

[0024] Figure 4 for Figure 3 A magnified view of a portion of point B in the middle;

[0025] Figure 5 This is a front view of a clinical examination device for dental pulp and endodontics according to the present invention.

[0026] Figure 6 for Figure 5 A sectional view of CC.

[0027] The names of the corresponding labels in the attached diagram are:

[0028] 1. Base, 2. Housing, 3. Head support plate, 4. First spring, 5. Slide rod, 6. Second spring, 7. Clamping plate, 8. Wedge slider, 9. Wedge seat, 10. Linkage rod, 11. First telescopic component, 12. Control and display center, 13. Sleeve, 14. Operating lever, 15. Visual inspection base, 16. Camera, 17. Non-contact distance sensor, 18. Protective goggles, 19. Fan, 20. Air inlet, 21. Air outlet, 22. Motor, 23. Lead screw, 24. Sliding seat, 25. Second telescopic component. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0030] like Figures 1 to 6 As shown, a clinical examination device for dental endodontics includes a base 1, a head fixation assembly, and an inspection assembly. The head fixation assembly includes a housing 2, a headrest 3, and a pair of identical clamping assemblies. The housing 2 is connected to the base 1 via a first telescopic member 11, making the overall height of the housing 2 adjustable. The headrest 3 slides through an opening at the top of the housing 2, and a first spring 4 is connected below it. The lower end of the first spring 4 is connected to the upper side of the housing 2, providing an upward buffering and restoring force for the headrest 3. A pair of clamping assemblies are located on both sides of the headrest 3. Each clamping assembly includes a slide rod 5, a second spring 6, a clamping plate 7, a wedge-shaped slider 8, a wedge-shaped seat 9, and a linkage rod 10. The slide rod 5 is horizontally arranged, and its middle part is vertically slidably connected to the side wall of the housing 2 via a sliding groove and a protruding structure. The second spring 6 is connected to the upper side of the housing 2 via a first telescopic member 11, making the overall height of the housing 2 adjustable. The lower side of the second spring 6 is connected to the bottom surface of the box 2, which is attached to the lower side of the slide rod 5 to provide an upward restoring force for the slide rod 5; the head support plate 3 is fixedly connected to the upper end of the corresponding slide rod 5 to achieve linkage; the wedge seat 9 is fixedly installed inside the box 2 and has an inclined wedge-shaped slope. The lower middle part of the linkage rod 10 and the upper end face of the slide rod 5 are connected laterally through another set of sliding grooves and protrusions. The wedge slider 8 is fixed to the inner end of the linkage rod 10 and its slope slides against the slope of the wedge seat 9; the clamping plate 7 is installed on the outside of the box 2 and fixedly connected to the outer end of the wedge slider 8. The upper surface of the head support plate 3 is provided with an upwardly concave arc-shaped part to support the patient's chin. The two clamping plates 7 are also provided with arc-shaped grooves on their opposite inner sides, in the shape of "()", to fit the cheekbone area on both sides of the patient's head.

[0031] The visual examination assembly includes a control display center 12, a sleeve 13, an operating lever 14, and a visual examination base 15. A motor 22 is mounted on the base 1, and the output shaft of the motor 22 is connected to a lead screw 23 that is rotatably connected to the base 1. The lead screw 23 is threadedly connected to a sliding seat 24 that is slidably connected to the base 1. The upper surface of the base 1 has a through groove, and the sliding seat 24 passes through the through groove and can slide along the axial direction of the through groove. The control display center 12 is connected to the sliding seat 24 through a second telescopic member 25. In this embodiment, the second telescopic member 25 is an electric telescopic rod. The motor 22 drives the control display center 12 to move horizontally left and right relative to the base 1 / head fixing assembly, and the second telescopic member 25 can drive it to move vertically.

[0032] A sleeve 13 is rotatably connected to the upper side of the control display center 12 via a connecting frame. The operating lever 14 is rotatably connected to the sleeve 13. In the three-dimensional space of XYZ, the connecting frame rotates relative to the control display center 12 in the XY plane, the sleeve 13 rotates relative to the connecting frame in the YZ plane, and the operating lever 14 rotates relative to the sleeve 13 in the ZX plane. The visual examination base 15 is detachably connected to the operating lever 14 via a thread, so that the operating lever 14 has the ability to drive the visual examination base 15 to move in multiple degrees of freedom in three-dimensional space. Furthermore, a control button for the operation of the control motor 22 and the second telescopic component 25 is connected to the handle of the operating lever 14. The operation of the motor 22 and the second telescopic component 25 can be controlled by the control button to adjust the left and right position and height of the visual examination base 15 relative to the base 1 / head fixing assembly.

[0033] A transparent protective mirror 18 is installed at the front opening of the visual examination base 15, and the two together form a closed chamber. A camera 16 is connected to the inside of the chamber. The front end face of the visual examination base 15 is annular, and a non-contact distance sensor 17 (such as an infrared sensor) is connected to its annular end face to form a complete "detection ring". A fan 19 is also installed inside the visual examination base 15. The fan 19 is connected to multiple small air inlets 20. The outlets of these air inlets 20 point to the central area of ​​the protective mirror 18. Multiple air outlets 21 are opened on the side wall of the chamber and inside the non-contact distance sensor 17. The channel of the air outlet 21 is inclined upward, but the direction of its air outlet is slightly inclined downward. Among them, the camera 16, the non-contact distance sensor 17, the fan 19, the motor 22, and the second telescopic component 25 are all electrically connected to the controller inside the control display center 12 through wires. The screen of the control display center 12 is used to display the image captured by the camera 16 in real time, as well as the shortest distance value between the non-contact distance sensor 17 and the oral tissue. The operation of the fan 19 is controlled according to the distance. The closer the non-contact distance sensor 17 is to the obstacle (such as the oral cavity sidewall, lingual mucosa, and gums), the greater the air output power of the fan 19.

[0034] The specific implementation process is as follows:

[0035] When using this examination device, first adjust the housing 2 to a suitable height according to the patient's height using the first telescopic component 11; then place the patient's chin in the arc-shaped groove of the headrest 3. The headrest 3 moves downward under force, compressing the first spring 4, and simultaneously driving the sliding rods 5 on both sides to move downward. During the downward movement of the sliding rods 5, the wedge-shaped slider 8 is pushed along the inclined surface of the fixed wedge-shaped seat 9 through the linkage rod 10. Due to the inclined surface, the wedge-shaped slider 8 moves horizontally inward (towards the patient's head) while moving downward, thereby driving the two clamping plates 7 to smoothly and gently close towards the middle until their arc-shaped groove is closed. The slot fits against both sides of the patient's head, achieving adaptive clamping and fixation. Then, the medical staff holds the operating lever 14 and controls the operation of the motor 22 and the second telescopic component 25 through the buttons on it, moving the visual examination base 15 to a suitable position in front of the patient's mouth. The medical staff continues to finely control the operation of the motor 22 and the second telescopic component 25, sending the visual examination base 15 into the patient's oral cavity. By using the operating lever 14 of the multi-degree-of-freedom swing handle, the observation angle and position of the camera 16 are adjusted to conduct a comprehensive exploration of the target tooth and surrounding tissues. The control display center 12 displays high-definition images in real time.

[0036] During the examination, if another area of ​​the oral cavity needs to be examined, the doctor can directly adjust the position of the visual acuity 15 over a wide range using the control lever 14 button, without having to completely remove the device. Throughout the examination, the non-contact distance sensor 17 continuously monitors the distance between the front end of the visual acuity 15 and soft tissues such as the oral mucosa, gums, and tongue. This distance value is displayed on the screen in real time. When the distance is too close, the control display center 12 issues an audible and visual alarm to remind the doctor to avoid collision. At the same time, the control display center 12 adjusts the power of the fan 19: the closer the distance, the more the airflow of the fan 19 automatically increases, and the stronger the dry airflow introduced from the air inlet 20 and blown out through the air outlet 21 becomes. This enhanced airflow can first more effectively blow the inner surface of the protective lens 18, preventing the lens from fogging up due to proximity to warm tissues. Secondly, when the airflow blows towards the oral tissues, it will form a slight reverse pressure, like an "air cushion," providing the doctor with slight tactile feedback, further assisting in preventing contact.

[0037] After the examination, the visual inspection base 15 is unscrewed from the operating lever 14 and, together with the protective goggles 18, is strictly disinfected and sterilized for future use. When the patient raises their head, the headrest 3 and a pair of clamping plates 7 automatically release the head under the restoring force of the first spring 4 and the second spring 6.

[0038] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific technical solutions or characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An oral dental pulp clinical examination device, characterized by, The base is connected with a motor, the output shaft of the motor is fixedly connected with a screw rod which is rotationally connected with the base, the screw rod is threadedly connected with a sliding seat which is slidingly connected with the base, and the control display center is connected with the sliding seat through a second telescopic member.

2. The device according to claim 1, wherein The second telescopic member is an electric telescopic rod, and the motor and the second telescopic member are electrically connected with the control display center, and an operation button for controlling the operation of the motor and the second telescopic member is connected on the handle of the operation rod.

3. The device according to claim 2, wherein the device is a dental device. The sleeve is rotationally connected with the control display center through a connecting frame, the sleeve is rotationally connected with the connecting frame, the operation rod is rotationally connected with the sleeve, and in the X-Y-Z three-dimensional space, the connecting frame rotates relative to the control display center in the X-Y plane, the sleeve rotates relative to the connecting frame in the Y-Z plane, and the operation rod rotates relative to the sleeve in the Z-X plane.

4. The device according to claim 1, wherein The opening end of the visual diagnosis base is annular, the non-contact distance sensor is arranged on the annular end face, forming a complete detection ring, the air flow guided by the plurality of air inlet heads converges at the central position of the protective mirror, and the plurality of air outlets are distributed around the non-contact distance sensor.

5. The device according to claim 4, wherein the device is a dental device. The visual diagnosis base is connected with the operation rod through a thread, the air outlets are inclined upward along the side wall of the visual diagnosis base, and the air outlet ends are inclined downward.

6. The oral cavity dental pulp clinical examination device according to claim 5, characterized in that, ​ 7. The device according to claim 1, wherein the device is a dental clinical examination device. The head fixing assembly further comprises a box body connected with the base through a first telescopic piece; the box body is connected with a pair of clamping assemblies, each of which comprises a second spring and a wedge-shaped seat; a free end of the second spring is connected with a sliding rod in sliding connection with the box body; the sliding rod is in sliding connection with a linkage rod; the linkage rod is fixedly connected with a wedge-shaped sliding block in sliding abutment with a wedge-shaped inclined surface of the wedge-shaped seat; the wedge-shaped sliding block is connected with a clamping plate; the head supporting plate is arranged between the two clamping plates of the pair of clamping assemblies.

8. The oral cavity dental pulp clinical examination device according to claim 7, characterized in that, The head supporting plate is arranged in sliding connection with the box body, and the head supporting plate is in fixed connection with the sliding rod.

9. The device according to claim 7, wherein the device is a dental clinical examination device. The head supporting plate and the two clamping plates are both provided with arc-shaped portions, and the arc-shaped recesses of the head supporting plate face upward, and the arc-shaped recesses of the two clamping plates are oppositely arranged in a "()" shape.

10. The device according to claim 7, wherein the device is a dental clinical examination device. The inner side wall of the box body and the sliding rod are both provided with sliding grooves, and the sliding rod and the linkage rod are both provided with protrusions in matching arrangement with the sliding grooves, and the protrusions are arranged in sliding connection with the inner sides of the sliding grooves.

Images