Mouth mirror for oral and dental examination

Abstract

The utility model relates to the technical field of stomatoscopes for dental examination, and particularly discloses a stomatoscope for dental examination, which comprises a handle and a reflective mirror at the front end of the handle, a movable through groove is arranged at the front end of the handle, and a corner piece is rotatably mounted on the groove wall on one side of the movable through groove through a cylinder matched with an anti-dropping nail integrally formed with the movable through groove. The corner piece is composed of a face disc located at the top and a gear located at the bottom of the face disc and integrally formed with the face disc. A linkage piece is rotationally mounted on one side of the top of the surface disc through a mounting block integrally formed on the surface disc; an adjusting shaft and an adjusting rod which are used in cooperation with the connecting shaft piece and the corner piece are further rotationally installed in the handle. The reflective mirror of the mouth mirror can synchronously achieve angle adjustment in the vertical direction and rotation adjustment in the axial direction, the limitation of the mouth mirror on the placing angle in the using process can be further relieved, and the using convenience of the mouth mirror is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oral mirrors for dental examinations, and specifically relates to an oral mirror for oral and dental examinations. Background Art

[0002] As one of the essential medical devices for dental examinations of the inner side of the dental arch, an oral mirror mainly reflects the situation of the inner side of the dental arch or the gums through the reflecting mirror on it, facilitating the doctor to obtain information about the lesions or conditions inside the patient's oral cavity. At the same time, it also enables the doctor to apply medicine to the lesions on the inner side of the dental arch or gums at a fixed point.

[0003] Currently, oral mirrors are mainly divided into two categories. One is the traditional style, in which the handle and the mirror holder are integrally formed, and the angle of the oral mirror cannot be adjusted arbitrarily. The doctor can only place the oral mirror at different angles to successfully obtain the situation inside the patient's oral cavity from the oral mirror. The other is the oral mirror structure improved on the basis of the traditional one, in which the angle of the reflecting mirror of the oral mirror is adjustable, enabling the doctor to adjust the angle of the oral mirror according to needs during use. For example, the public patents: "CN216293996U", "CN209252807U", etc. However, the adjustment angle of the reflecting mirror of this kind of oral mirror is limited to the adjustment of the included angle in the vertical direction between the reflecting mirror and the handle, and the reflecting mirror of the oral mirror itself cannot be rotated axially. When the doctor uses this kind of oral mirror, compared with the traditional style oral mirror, although the convenience is improved to some extent, there are still some limitations in the placement angle of the oral mirror during operation. For example, when placing the oral mirror, the reflecting mirror in the oral mirror still needs to be placed horizontally like a traditional oral mirror (especially when observing the lower dental arch of the patient). In this placement method, first, the handle also has to be tilted in the horizontal direction to ensure that the reflecting mirror can effectively transmit the information inside the oral cavity to the doctor; when the mirror surface of the oral mirror and the handle form a left-right placement and reflect the internal situation of the oral cavity, the handle and the observation area form a horizontal misalignment, which leads to a significant increase in the occupancy rate of the horizontal space of the handle angle inside the oral cavity. In this way, in some special cases during oral examinations, such as when the patient's oral cavity is being examined or treated, sometimes an anterior and posterior tooth expansion bracket is needed. In this case, since the placement of the bracket will also occupy the horizontal space between the upper and lower dental arches of the oral cavity, it is easy for the oral mirror to conflict with the position of the bracket during placement and unable to effectively observe the target area. Second, if the handle and the reflecting mirror are placed in an upper-lower position, since the reflecting mirror can only be adjusted in angle in the vertical direction and the mirror surface cannot be rotated, when observing the lower dental arch of the patient, in order not to let the handle interfere with the line of sight and facilitate the doctor's observation, the handle is often placed high. However, this will force the patient to open their mouth as wide as possible, especially when the examination takes several minutes, which will cause some discomfort to the patient. Summary of the Invention

[0004] In view of the problems raised in the above-mentioned background art, the present utility model provides an oral mirror for oral dental examination that can adjust the reflecting mirror at multiple angles.

[0005] An oral mirror for oral dental examination disclosed by the present utility model includes a handle and a reflecting mirror at the front end of the handle. An activity through slot is provided at the front end of the handle, and a corner piece is rotatably installed on one side wall of the activity through slot through a cylinder integrally formed therewith and a anti-disengagement pin. In order to further improve the existing oral mirror, achieve multi-directional angle adjustment of the reflecting mirror, and at the same time realize the up-and-down and left-and-right placement between the handle and the reflecting mirror, thereby further liberating the limitation of the placement angle of the oral mirror during use. The corner piece is composed of a face plate at the top and a gear at the bottom of the face plate and integrally formed with the face plate; one side of the top of the face plate is rotatably installed with a linkage member through a mounting block integrally formed on the face plate; and an adjustment shaft and an adjustment rod for cooperating with the connecting shaft member and the corner piece are respectively rotatably installed inside the handle; and the linkage member is composed of a coupling transmission clamping ring and a connecting shaft integrally formed at the middle position on the back of the coupling transmission clamping ring and horizontally arranged; the adjustment shaft is in transmission connection with the coupling transmission clamping ring in cooperation; the adjustment rod is in transmission connection with the gear in the corner piece, so as to realize the vertical angle adjustment and the rotation angle adjustment in the axial direction of the reflecting mirror in the oral mirror through the adjustment rod and the adjustment shaft.

[0006] As a further improvement of the present utility model, in order to enable the reflecting mirror to be smoothly rotated and adjusted under the drive of the linkage member, a movable sleeve is fixed inside the mounting block, the connecting shaft is rotatably installed inside the movable sleeve, and one end of the connecting shaft extends out of the movable sleeve and is fixedly connected to the frame of the reflecting mirror.

[0007] In order to prevent the connecting shaft from moving back and forth in the horizontal direction and at the same time ensure the normal rotation of the connecting shaft, positioning sliding rings (not shown in the figure) are clamped at the positions of the two ends of the connecting shaft where it is located in the movable sleeve.

[0008] As a further improvement of the present utility model, in order to ensure that the vertical angle adjustment between the reflecting mirror and the handle does not affect the linkage effect between the adjustment shaft and the linkage member, the coupling transmission clamping ring is integrally designed in a circular ring structure, and an opening part for the adjustment shaft to move is provided at the front end of the coupling transmission clamping ring. Two transmission slots are symmetrically opened on the ring body of the coupling transmission clamping ring with the opening part as the center, and at the same time, both ends of the transmission pin in the following adjustment shaft are respectively movably fitted in the two transmission slots.

[0009] Further, to facilitate the doctor to adjust the rotation angle of the oral mirror through the adjustment shaft, the rotating shaft rod constituting the adjustment shaft is rotatably installed inside the handle, and the tail end of the rotating shaft rod extends outside the tail end of the handle and is equipped with a first adjustment knob.

[0010] Further, to ensure that when the oral mirror rotates in the horizontal direction, the adjustment shaft can always maintain a linkage relationship with the linkage member, the front end of the rotating shaft rod extends through the opening of the coupling transmission snap ring to the center position of the coupling transmission snap ring, and a transmission pin is integrally formed. The transmission pin is arranged at a right angle to the rotating shaft rod.

[0011] When the corner piece realizes angle adjustment in different orientations through the adjustment rod and the cylinder in the movable through slot, both ends of its transmission pin can always slide and fit with the inner side of the transmission slot on the coupling transmission snap ring, providing a linkage guarantee for the rotation adjustment of the oral mirror.

[0012] As a further improvement of the present utility model, to realize the adjustment of the vertical angle between the above-mentioned oral mirror and the handle, and at the same time to facilitate the doctor to perform the adjustment operation, the adjustment rod includes a rotating rod rotatably installed inside the handle. The tail end of the rotating rod extends out of the tail of the handle and is fixed with a second adjustment knob. A worm is integrally formed at the front end of the rotating rod. The worm meshes with the gear on the corner piece to form a worm drive through the cooperation of the worm and the gear. With the reverse self-locking effect of the worm drive, it can prevent the reflector from automatically returning during the adjustment of the vertical angle of the reflector and can play a positioning effect on the reflector.

[0013] As a further improvement of the present utility model, to prevent the mirror surface of the oral mirror from fogging during use, a layer of XN-501A nano anti-fog coating is provided on the mirror surface of the reflector.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The present utility model rotatably installs a corner piece in the movable through slot opened at the front end of the handle, cooperates with the adjustment shaft and the adjustment rod installed inside the handle, and the linkage member rotatably installed by means of the installation block. Through the cross coupling transmission mechanism constituted by the adjustment shaft and the linkage member, the reflector of the oral mirror can synchronously achieve the angle adjustment in the vertical direction and the rotation adjustment in the axial direction. When the handle and the reflector are placed in the upper and lower positions and the left and right positions, the angle limitation of the handle can be reduced as much as possible, so that even in a limited operation space, the doctor can still adjust the angle of the reflector in different orientations and observe the internal situation of the patient's oral cavity from different directions and perspectives, thereby further liberating the limitation of the placement angle of the oral mirror during use and further improving the convenience of the oral mirror during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is Figure 1 an enlarged structural diagram of part A in

[0019] Figure 3 is Figure 1 a sectional structural diagram of part A in

[0020] Figure 4 is a schematic structural diagram of the adjusting rod of the present utility model;

[0021] Figure 5 is a schematic structural diagram of the connection structure of the cooperation and transmission between the linkage member and the adjusting shaft of the present utility model.

[0022] In the figure: 1. handle; 2. movable through slot; 3. corner piece; 301. face plate; 302. gear; 4. mounting block; 5. movable sleeve; 6. linkage member; 601. coupling transmission snap ring; 602. opening part; 603. transmission slot; 604. connecting shaft; 7. adjusting shaft; 701. rotating shaft rod; 702. transmission pin; 703. first adjusting knob; 8. adjusting rod; 801. rotating rod; 802. worm; 803. second adjusting knob; 9. rearview mirror; 10. cylinder; 11. anti-disengagement pin. Detailed embodiments

[0023] The following will disclose multiple embodiments of the present utility model in the form of drawings. For the sake of clarity, many physical details will be described in the following narrative. However, it should be understood that these physical details are not used to limit the present utility model. That is to say, in some embodiments of the present utility model, these physical details are not necessary. In addition, for the sake of simplifying the drawings, some well-known and commonly used structures and components will be shown in a simple schematic manner in the drawings.

[0024] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes, not specifically referring to the order or sequence, nor are they used to limit the present utility model. They are merely used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. Additionally, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0025] Please refer to Figure 1 、 Figure 2 、 Figure 3 A dental oral mirror for oral dental examination disclosed by the present utility model includes a handle 1 and a reflecting mirror 9 at the front end of the handle 1. An activity through slot 2 is opened at the front end of the handle 1. On one side wall of the activity through slot 2, a corner piece 3 is rotatably installed through a cylindrical column 10 integrally formed therewith and a retaining pin 11. In order to further improve the existing oral mirror, to achieve multi-directional angle adjustment of the reflecting mirror 9, and at the same time realize the up / down and left / right placement between the handle 1 and the reflecting mirror 9, thereby further liberating the limitations of the placement angle of the oral mirror during use. The corner piece 3 is composed of a face plate 301 at the top and a gear 302 located at the bottom of the face plate 301 and integrally formed with the face plate 301; on one side of the top of the face plate 301, a linkage member 6 is rotatably installed through a mounting block 4 integrally formed on the face plate 301; and an adjusting shaft 7 and an adjusting rod 8 for cooperating with the connecting shaft member and the corner piece 3 are respectively rotatably installed inside the handle 1; and the linkage member 6 is composed of a coupling transmission clamping ring 601 and a connecting shaft 604 integrally formed at the middle position on the back of the coupling transmission clamping ring 601 and arranged horizontally; the adjusting shaft 7 is in transmission connection with the coupling transmission clamping ring 601 in cooperation; the adjusting rod 8 is in transmission connection with the gear 302 in the corner piece 3 in cooperation, so as to realize the vertical angle adjustment and the axial rotation angle adjustment of the reflecting mirror 9 in the oral mirror through the adjusting rod 8 and the adjusting shaft 7.

[0026] Please refer to Figure 1 、 Figure 2 In order to enable the reflecting mirror 9 to smoothly rotate and adjust under the drive of the linkage member 6, a movable sleeve 5 is fixed inside the mounting block 4, the connecting shaft 604 is rotatably installed in the movable sleeve 5, and one end of the connecting shaft 604 extends out of the movable sleeve 5 and is fixedly connected to the frame of the reflecting mirror 9. In order to prevent the mirror surface of the oral mirror from fogging during use, a layer of XN-501A nano anti-fog coating is provided on the mirror surface of the reflecting mirror 9.

[0027] To prevent the connecting shaft 604 from moving back and forth in the horizontal direction and at the same time ensure the normal rotation of the connecting shaft 604, positioning slip rings (not shown in the figure) are snap-connected at the positions of the connecting shaft 604 at both ends of the movable sleeve 5.

[0028] Please refer to Figure 1 , Figure 5 , in order to ensure that the vertical angle adjustment between the rearview mirror 9 and the handle 1 does not affect the linkage effect between the adjustment shaft 7 and the linkage member 6, the coupling drive snap ring 601 is integrally designed with a circular ring structure, and an opening 602 for the movement of the adjustment shaft 7 is provided at the front end of the coupling drive snap ring 601. Two drive slots 603 are symmetrically formed on the ring body of the coupling drive snap ring 601 with the opening 602 as the center, and the two ends of the drive pin 702 in the following adjustment shaft 7 are respectively movably fitted into the two drive slots 603.

[0029] To facilitate the doctor to adjust the rotation angle of the oral mirror through the adjustment shaft 7, the rotating shaft rod 701 constituting the adjustment shaft 7 is rotatably installed inside the handle 1, and the tail end of the rotating shaft rod 701 extends outside the tail end of the handle 1 and is installed with a first adjustment knob 703.

[0030] To ensure that the adjustment shaft 7 can always maintain a linkage relationship with the linkage member 6 when the oral mirror rotates in the horizontal direction, the front end of the rotating shaft rod 701 extends through the opening 602 of the coupling drive snap ring 601 to the center position of the coupling drive snap ring 601, and a drive pin 702 is integrally formed. The drive pin 702 is arranged at a right angle to the rotating shaft rod 701.

[0031] When the angled member 3 realizes angle adjustment in different directions through the adjustment rod 8 and the cylinder 10 in the movable through slot 2, the two ends of its drive pin 702 can always slide and fit with the inner side of the drive slot 603 on the coupling drive snap ring 601, providing a linkage guarantee for the rotation adjustment of the oral mirror.

[0032] Please refer to Figure 4 , to realize the vertical angle adjustment between the above-mentioned oral mirror and the handle 1, and at the same time to facilitate the doctor's adjustment operation, the adjustment rod 8 includes a rotating rod 801 rotatably installed inside the handle 1. The tail end of the rotating rod 801 extends out of the tail of the handle 1 and is fixed with a second adjustment knob 803. A worm 802 is integrally formed at the front end of the rotating rod 801. The worm 802 meshes with the gear 302 on the angled member 3 to form a worm 802 drive. By means of the reverse self-locking effect of the worm 802 drive, it is possible to prevent the rearview mirror 9 from automatically returning during the vertical angle adjustment of the rearview mirror 9 in the non-manual operation, and the rearview mirror 9 can be positioned.

[0033] When using the present utility model: The doctor rotates the second adjustment knob 803 at the end of the adjustment rod 8, causing the worm 802 rotating handle at the front end of the adjustment rod 8 to drive the corner piece 3 to rotate around the cylinder 10. In this way, the corner piece 3 drives the mounting block 4 and the linkage member 6 to rotate together, achieving the angle adjustment in the vertical direction between the reflector 9 and the handle 1. At the same time, since the coupling drive snap ring 601 on the linkage member 6 is designed as a whole circle, and the position of the drive pin 702 on the adjustment shaft 7 is at the center of the circle of the coupling drive snap ring 601, and the drive pin 702 fits with the drive slot 603, this enables the drive pin 702 to always maintain an effective connection with the drive slot 603 when the linkage member 6 is at different angles. Therefore, the doctor can, according to his own habits or the actual scenario during the patient's oral examination, choose to adjust the axial rotation angle of the reflector 9 through the adjustment shaft 7, so that when the oral mirror is in use, the doctor can effectively observe the actual situation of the inner observation area of the patient's oral cavity when the reflector 9 and the handle 1 are placed in the upper and lower positions. During this period, without the patient having to open their mouth too wide, by adjusting the rotation angle of the reflector 9, the doctor can smoothly observe the situation inside the patient's oral cavity from the reflector 9, and at the same time, it will also avoid the situation of the handle 1 blocking the line of sight. Compared with the current oral mirror with single-angle adjustment, the limitations of the oral mirror during use will be much smaller, and the convenience of the oral mirror can be further improved.

[0034] The above is only the embodiment of the present utility model and is not used to limit the present utility model. For those skilled in the art, various changes and modifications can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the scope of the claims of the present utility model.

Claims

1. A dental mirror for oral dental examination, comprising a handle (1) and a reflector (9) at the front end of the handle (1), characterized in that: The front end of the handle (1) is provided with a movable through slot (2), and a corner piece (3) is rotatably mounted on a side slot wall of the movable through slot (2) through a cylinder (10) integrally formed therewith and cooperating with an anti-dropping pin (11), and the corner piece (3) comprises a face plate (301) located at the top and a gear (302) located at the bottom of the face plate (301) and integrally formed with the face plate (301); A linkage member (6) is rotatably mounted on one side of the top of the face plate (301) via a mounting block (4) integrally formed on the face plate (301); An adjusting shaft (7) and an adjusting rod (8) are rotatably mounted inside the handle (1); The linkage member (6) is composed of a coupling drive snap ring (601) and a connecting shaft (604) which is integrally formed at the middle of the back side of the coupling drive snap ring (601) and is arranged horizontally; The adjusting shaft (7) is in driving connection with the coupling transmission clamp ring (601); and the adjusting rod (8) is in driving connection with the gear (302) in the corner piece (3).

2. The oral mirror for oral dental examination according to claim 1, characterized in that: A movable sleeve (5) is fixed inside the mounting block (4), and a connecting shaft (604) is rotatably mounted inside the movable sleeve (5). One end of the connecting shaft (604) extends out of the movable sleeve (5) and is fixedly connected to the frame of the reflector (9).

3. The oral mirror for oral dental examination according to claim 1, characterized in that: The coupling transmission snap ring (601) as a whole adopts a circular ring structure design, and the front end of the coupling transmission snap ring (601) is provided with an opening portion (602) for the adjustment shaft (7) to move, and the ring body of the coupling transmission snap ring (601) is provided with two transmission grooves (603) at symmetrical angles with the opening portion (602) as the center.

4. The oral mirror for oral dental examination according to claim 1, characterized in that: The adjusting shaft (7) comprises a rotating shaft (701) rotatably mounted inside the handle (1); the rear end of the rotating shaft (701) extends outside the rear end of the handle (1) and is mounted with a No. 1 adjusting knob (703); the front end of the rotating shaft (701) extends through an opening (602) of the coupling transmission snap ring (601) to the center of the coupling transmission snap ring (601) and is integrally formed with a transmission pin (702); the transmission pin (702) and the rotating shaft (701) are arranged at a vertical angle, and the two ends of the transmission pin (702) are respectively movably fitted in the two transmission grooves (603).

5. The oral mirror for oral dental examination according to claim 1, characterized in that: The adjusting rod (8) comprises a rotating rod (801) rotatably mounted inside the handle (1), the rear end of the rotating rod (801) extending out of the rear end of the handle (1) and fixed with a second adjusting knob (803), and a worm (802) is integrally formed at the front end of the rotating rod (801), and the worm (802) is meshed with a gear (302) on the corner piece (3) for transmission.

6. The oral mirror for oral dental examination according to claim 1, characterized in that: A layer of XN-501A nano anti-fog coating is provided on the mirror surface of the reflector (9).

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