An oral cavity assistive opening device for oral care examination

Abstract

This invention relates to the field of oral care assistive device technology, and provides an oral cavity assistive opening device for oral care examination, comprising: a support base, a support plate, a first limiting seat, a second limiting seat, an oral cavity opening mechanism, a transmission mechanism, and an angle adjustment mechanism. The support plate is fixed to one side of the support base, and the overall structure formed by the support base and the support plate has two sets, symmetrically arranged. The first limiting seat is located on the side wall of the support base, and the second limiting seat is located on the side wall of the support plate, with two sets symmetrically arranged at the upper and lower ends of the support plate. In this solution, the oral cavity is supported by the overall structure formed by the linkage rod in the oral cavity opening mechanism and the dental support plate. During support, the position of the dental support plate is adjusted by sliding the first slider within the second limiting seat, thereby adjusting the oral cavity opening angle and increasing the applicability.

Description

Technical Field

[0001] This invention belongs to the field of oral care auxiliary device technology, and in particular relates to an oral auxiliary opening device for oral care examination. Background Technology

[0002] Oral care involves cleaning and protecting the teeth, tongue, palate, cheeks, and other parts of the oral cavity. Modern life is fast-paced, and the health of the younger generation is generally sub-optimal. Many people experience high work pressure and don't have time to properly examine their bodies, and oral health is often the most easily overlooked aspect. With the significant increase in sugar intake, almost everyone has some degree of oral health problems. Therefore, regular oral care checkups are necessary. Typical oral care involves using instruments to fix the head and use auxiliary opening devices to open the mouth for medical personnel to perform the examination.

[0003] Although there are various types of oral retraction devices available today, some problems still exist. For example, most current oral retraction devices use two adjustable-angle support plates to support the patient's upper and lower jaws, thereby opening the mouth. However, because different patients have different tooth growth patterns, not all patients have teeth of the same length. Most current retraction devices have two flat support plates on each side, and the support height is the same. They cannot adaptively adjust the support height according to the growth of the teeth on both sides of the patient. This can cause discomfort for patients whose teeth are of different lengths on both sides, and in some cases, one support plate may be suspended in the air or the patient's upper and lower jaws may become crooked. Summary of the Invention

[0004] This invention provides an oral cavity auxiliary opening device for oral care examination, which aims to solve the problem that the opening height on both sides of the current auxiliary opening device is the same and cannot be adaptively adjusted according to the patient's oral environment.

[0005] This invention is implemented as follows: an oral cavity auxiliary opening device for oral care examination, comprising:

[0006] Support seat, support plate, first limit seat, second limit seat, oral cavity opening mechanism, transmission mechanism and angle adjustment mechanism;

[0007] The support plate is fixed to one side of the support seat, and the overall structure formed by the support seat and the support plate is provided in two sets and is symmetrically arranged. The first limiting seat is provided on the side wall of the support seat, and the second limiting seat is provided on the side wall of the support plate, and there are two symmetrically arranged at the upper and lower ends of the support plate.

[0008] The oral cavity opening mechanism is connected to the integral structure composed of the support seat and the support plate. The oral cavity opening mechanism includes a linkage rod, a first slider and a tooth support plate. The first slider is fixed to one end of the linkage rod and is slidably engaged in the second limiting seat. The tooth support plate is connected to the other end of the linkage rod.

[0009] The transmission mechanism for driving the entire oral cavity opening mechanism is mounted on the support seat. The angle adjustment mechanism is connected between the linkage rod and the dental support plate. The angle adjustment mechanism includes a base plate and an adjustment plate. The base plate is fixed to one end of the linkage rod near the dental support plate. The adjustment plate is fixed to one end of the dental support plate and is coaxially rotatably connected to the bottom of the base plate.

[0010] Preferably, the oral cavity opening mechanism further includes a second slider, an active rack, a linkage gear, and a driven rack. The second slider is slidably engaged in the first limiting seat. The active rack is fixed on the second slider. The linkage gear is rotatably connected to the side wall of the support plate and is arranged symmetrically in two positions. The active rack meshes between the two linkage gears. The driven rack is located on one side of the linkage rod and meshes with the linkage gear.

[0011] Preferably, the transmission mechanism includes a docking plate, a transmission rack, a retaining seat, a first guide rod, and a transmission gear. The docking plate is horizontally fixed to one side of the second slider and has a rectangular slot through it on the support. The docking plate passes through the rectangular slot. The transmission rack is fixed to the end of the docking plate away from the second slider. The first guide rod is fixed to the retaining seat and is slidably connected to the support. The retaining seat is rotatably connected to the transmission gear and meshes between two adjacent transmission racks.

[0012] Preferably, a first lead screw is rotatably connected to the card holder at the center of one side of the first guide rod, and a threaded hole is provided through the support seat, with the first lead screw threaded into the threaded hole.

[0013] Preferably, the angle adjustment mechanism further includes a toothed groove and a limiting gear. The toothed groove is recessed at the bottom of the base plate and the top of the adjustment plate, respectively. The limiting gear is slidably engaged between the toothed grooves of the base plate and the adjustment plate. The depth of the toothed groove on the base plate is less than the height of the limiting gear, and the depth of the toothed groove on the adjustment plate is greater than the height of the limiting gear.

[0014] Preferably, a return spring is provided at the axis of the adjusting disc, and the top end of the return spring abuts against the bottom of the limiting gear.

[0015] Preferably, a pressing rod is coaxially fixed to the top of the limiting gear, and the pressing rod protrudes from the base plate and is rotatably connected to the base plate.

[0016] Preferably, a second lead screw is rotatably connected to the center of one of the supports, and a screw hole is provided at the center of one side of the other support, with the second lead screw threaded into the screw hole.

[0017] Preferably, a second guide rod is fixed on one side of the support seat that is rotatably connected to the second lead screw. Two second guide rods are provided and are symmetrically arranged on the upper and lower sides of the second lead screw. The upper and lower ends of the other support seat are provided with through holes, and the second guide rod is slidably engaged in the through holes.

[0018] Preferably, the integral structure consisting of the docking plate and the transmission rack is symmetrically arranged in two sets, and a telescopic structure is provided in one of the docking plates, and a spring is provided inside the telescopic structure.

[0019] Compared with the prior art, the embodiments of this application have the following main advantages:

[0020] 1. The oral cavity opening mechanism utilizes the linkage rod and the tooth support plate to form an integrated structure to support the patient's oral cavity. During support, the position of the tooth support plate can be adjusted by sliding the first slider within the second limiting seat, thereby adjusting the oral cavity opening angle and increasing the applicability.

[0021] 2. By utilizing the transmission mechanism, the transmission gears in the transmission mechanism can rotate appropriately when the oral cavity opening mechanism is in linkage, thereby causing the two adjacent transmission racks to move in the same way. In turn, the transmission racks drive the two adjacent sets of second sliders to slide, and the sliding distance can be adaptively adjusted according to the height of the teeth in the oral cavity. This avoids the situation where one side of the support plate is suspended or the patient's upper and lower jaws are crooked due to the same opening height on both sides. It effectively solves the technical problem and increases the patient's comfort.

[0022] 3. The angle adjustment mechanism allows for rapid adjustment of the angle between the linkage rod and the dental support plate, enabling medical staff to adjust the angle of the dental support plate according to the actual condition of the patient's oral cavity, so that the dental support plate can better fit against the patient's teeth. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall external structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the oral cavity opening mechanism of the present invention;

[0025] Figure 3 This is a schematic diagram of the transmission mechanism structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the support base and its connection structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the dental support plate connection structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the angle adjustment mechanism of the present invention;

[0029] Figure 7 This is a schematic diagram of the cross-sectional structure of the docking plate of the present invention;

[0030] In the diagram: 1. Support seat; 2. Support plate; 3. First limiting seat; 4. Second limiting seat; 5. Oral cavity opening mechanism; 51. Linkage rod; 52. First slider; 53. Tooth support plate; 54. Second slider; 55. Driving rack; 56. Linkage gear; 57. Driven rack; 6. Transmission mechanism; 61. Connecting plate; 62. Transmission rack; 63. Card seat; 64. First guide rod; 65. Transmission gear; 66. First lead screw; 7. Angle adjustment mechanism; 71. Base plate; 72. Adjustment plate; 73. Gear groove; 74. Limiting gear; 75. Return spring; 76. Pressing rod; 8. Second lead screw; 9. Second guide rod. Detailed Implementation

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0032] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] This invention provides an oral cavity auxiliary opening device for oral care examination, such as... Figure 1-7 As shown, it includes: a support seat 1, a support plate 2, a first limiting seat 3, a second limiting seat 4, an oral cavity opening mechanism 5, a transmission mechanism 6, and an angle adjustment mechanism 7;

[0034] The support plate 2 is fixed on one side of the support seat 1, and the overall structure consisting of the support seat 1 and the support plate 2 is provided in two sets and is symmetrically arranged. The first limiting seat 3 is provided on the side wall of the support seat 1, and the second limiting seat 4 is provided on the side wall of the support plate 2, and there are two symmetrically arranged at the upper and lower ends of the support plate 2.

[0035] The oral cavity opening mechanism 5 is connected to the overall structure formed by the support seat 1 and the support plate 2. The oral cavity opening mechanism 5 includes a linkage rod 51, a first slider 52 and a tooth support plate 53. The first slider 52 is fixed to one end of the linkage rod 51 and the first slider 52 is slidably engaged in the second limiting seat 4. The tooth support plate 53 is connected to the other end of the linkage rod 51.

[0036] The oral cavity opening mechanism 5 also includes a second slider 54, an active rack 55, a linkage gear 56, and a driven rack 57. The second slider 54 is slidably engaged in the first limiting seat 3. The active rack 55 is fixed on the second slider 54. The linkage gear 56 is rotatably connected to the side wall of the support plate 2 and two are symmetrically arranged vertically. The active rack 55 meshes between the two linkage gears 56. The driven rack 57 is arranged on one side of the linkage rod 51 and meshes with the linkage gear 56.

[0037] The transmission mechanism 6, which drives the oral cavity opening mechanism 5 to move together, is set on the support 1. The transmission mechanism 6 includes a docking plate 61, a transmission rack 62, a retaining seat 63, a first guide rod 64, and a transmission gear 65. The docking plate 61 is horizontally fixed to one side of the second slider 54 and has a rectangular slot through it on the support 1. The docking plate 61 passes through the rectangular slot. The transmission rack 62 is fixed on the docking plate 61 at the end away from the second slider 54. The first guide rod 64 is fixed on the retaining seat 63 and is slidably connected to the support 1. The transmission gear 65 is rotatably connected to the retaining seat 63 and the retaining seat 63 is engaged between two adjacent transmission racks 62.

[0038] Angle adjustment mechanism 7 is connected between linkage rod 51 and tooth support plate 53. Angle adjustment mechanism 7 includes base plate 71 and adjustment plate 72. Base plate 71 is fixed on linkage rod 51 near one end of tooth support plate 53. Adjustment plate 72 is fixed on one end of tooth support plate 53 and is coaxially rotatably connected to the bottom of base plate 71.

[0039] It should be noted that most current auxiliary opening devices have two flat support plates on both sides, and the height they can support is the same. They cannot adaptively adjust the support height according to the growth of the teeth on both sides of the patient. This can cause some discomfort for patients whose teeth are of different lengths on both sides. In some cases, one support plate may be suspended or the patient's upper and lower jaws may be crooked. To solve this problem, this solution is designed with an oral cavity opening mechanism 5, a transmission mechanism 6, and an angle adjustment mechanism 7. The oral cavity opening mechanism 5 is supported by the linkage rod 51 and the tooth support plate 53. During support, the position of the tooth support plate 53 is adjusted by sliding the first slider 52 in the second limit seat 4, thereby adjusting the size of the oral cavity opening angle and increasing the applicability.

[0040] By utilizing the transmission mechanism 6, when the oral cavity opening mechanism 5 is in linkage, the transmission gear 65 in the transmission mechanism 6 can rotate appropriately, thereby causing the two adjacent transmission racks 62 to move in the same way. In turn, the transmission racks 62 drive the two adjacent sets of second sliders 54 to slide, and the sliding distance can be adaptively adjusted according to the height of the teeth in the oral cavity. This avoids the situation where one side of the support plate is suspended or the patient's upper and lower jaws are crooked due to the same opening height on both sides. This effectively solves the technical problem and increases the patient's comfort.

[0041] The angle adjustment mechanism 7 allows for rapid adjustment of the angle between the linkage rod 51 and the dental support plate 53, enabling medical staff to adjust the angle of the dental support plate 53 according to the actual condition of the patient's oral cavity, so that the dental support plate 53 can better contact the patient's teeth.

[0042] Specifically, in this embodiment, the solution mainly includes a support 1, a support plate 2, a first limiting seat 3, a second limiting seat 4, an oral cavity opening mechanism 5, a transmission mechanism 6, and an angle adjustment mechanism 7. In use, the tooth support plate 53 is first adjusted according to the condition of the patient's teeth. During adjustment, the limiting gear 74 is pushed to slide by the pressing rod 76, causing the limiting gear 74 to separate from the tooth groove 73 of the base plate 71. At this time, the adjusting disc 72 unlocks and rotates. After adjusting to the appropriate position, the limiting gear 74 resets and engages between the base plate 71 and the tooth groove 73 of the adjusting disc 72. Then, the entire device is placed inside the patient's mouth. At this time, the first lead screw 66 is rotated to move the transmission gear 65. The transmission gear 65 drives the docking plate 61 and the transmission rack 62 to move as a whole, which in turn drives the second slider 54 to slide. The second slider 54 drives the active rack 55 to move, which in turn drives the linkage gear 56 to mesh and move together. While the linkage gear 56 is rotating, the linkage gear 56 drives the driven rack 57 to mesh and move together, which in turn drives the linkage rod 51 to slide until the tooth support plate 53 abuts against the patient's teeth, thus opening the patient's mouth.

[0043] In a further preferred embodiment of the present invention, such as Figure 1-7 As shown, a first lead screw 66 is rotatably connected to the center of one side of the first guide rod 64 on the card holder 63, and a screw hole is provided through the support seat 1, with the first lead screw 66 threaded into the screw hole.

[0044] In this embodiment, the first lead screw 66 moves as a whole by being linked by the thread in the screw hole.

[0045] In a further preferred embodiment of the present invention, such as Figure 1-7 As shown, the angle adjustment mechanism 7 also includes a toothed groove 73 and a limiting gear 74. The toothed groove 73 is recessed at the bottom of the base plate 71 and the top of the adjustment plate 72, respectively. The limiting gear 74 is slidably engaged between the toothed groove 73 of the base plate 71 and the adjustment plate 72. The depth of the toothed groove 73 on the base plate 71 is less than the height of the limiting gear 74, and the depth of the toothed groove 73 on the adjustment plate 72 is greater than the height of the limiting gear 74.

[0046] In this embodiment, the limiting gear 74 is limited by the tooth groove 73, and the base plate 71 and the adjusting plate 72 are also limited by the limiting gear 74. When the limiting gear 74 is located between the tooth groove 73 of the base plate 71 and the adjusting plate 72, the two can be locked to prevent rotation. When the limiting gear 74 is separated from the tooth groove 73 of the base plate 71, the base plate 71 and the adjusting plate 72 can be unlocked and rotated, thereby allowing the angle of the tooth support plate 53 to be quickly adjusted.

[0047] In a further preferred embodiment of the present invention, such as Figure 1-7As shown, a return spring 75 is provided at the axis of the adjusting disc 72, and the top of the return spring 75 abuts against the bottom of the limiting gear 74.

[0048] In this embodiment, the limit gear 74 is quickly reset and engaged between the tooth grooves 73 of the base plate 71 and the adjustment plate 72 by means of the reset spring 75.

[0049] In a further preferred embodiment of the present invention, such as Figure 1-7 As shown, a pressing rod 76 is coaxially fixed to the top of the limiting gear 74. The pressing rod 76 protrudes from the base plate 71 and is rotatably connected to the base plate 71.

[0050] In this embodiment, pressing the lever 76 facilitates the movement of the limiting gear 74 by medical staff.

[0051] In a further preferred embodiment of the present invention, such as Figure 1-7 As shown, a second lead screw 8 is rotatably connected to the center of one of the support seats 1, and a screw hole is provided at the center of one side of the other support seat 1, with the second lead screw 8 threaded into the screw hole.

[0052] In this embodiment, the distance between two adjacent support seats 1 can be adjusted by the screw hole linkage of the second lead screw 8 in the screw hole, thereby allowing the distance between the oral cavity opening mechanism 5 on the two adjacent support seats 1 to be adjusted according to the actual situation of the patient.

[0053] In a further preferred embodiment of the present invention, such as Figure 1-7 As shown, a second guide rod 9 is fixed on one side of the support 1 that is rotatably connected to the second lead screw 8. There are two second guide rods 9, which are symmetrically arranged on the upper and lower sides of the second lead screw 8. The upper and lower ends of the other support 1 are provided with through holes, and the second guide rod 9 is slidably engaged in the through holes.

[0054] In this embodiment, the second guide rod 9 limits the movement of two adjacent support seats 1, allowing them to slide in a specific direction.

[0055] In a further preferred embodiment of the present invention, such as Figure 1-7 As shown, the integral structure consisting of the docking plate 61 and the transmission rack 62 is symmetrically arranged in two sets, and a telescopic structure is provided in one of the docking plates 61, and a spring is provided inside the telescopic structure.

[0056] In this embodiment, the telescopic structure ensures that the transmission rack 62 always abuts against the transmission gear 65 when the distance between two adjacent support seats 1 is adjusted.

[0057] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0058] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units described above may be implemented in other ways in practice. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0059] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. An oral care examination mouth prop device for use in oral care examinations, characterized in that The utility model relates to a kind of oral cavity expansion mechanism, including: Support seat (1), support plate (2), first limit seat (3), second limit seat (4), oral cavity expansion mechanism (5), transmission mechanism (6) and angle adjusting mechanism (7); The support plate (2) is fixed on the side of support seat (1), and the whole structure of support seat (1) and support plate (2) is provided with two groups, and is symmetrically arranged, the first limit seat (3) is arranged on the side wall of support seat (1), and the second limit seat (4) is arranged on the side wall of support plate (2), and two are symmetrically arranged at the upper and lower ends of support plate (2). The oral cavity expansion mechanism (5) is connected to the whole structure of support seat (1) and support plate (2), and the oral cavity expansion mechanism (5) includes a linkage rod (51), a first sliding block (52) and a tooth support plate (53). The first sliding block (52) is fixed to one end of the linkage rod (51), and the first sliding block (52) is slidingly connected in the second limit seat (4). The tooth support plate (53) is connected to the other end of the linkage rod (51). The transmission mechanism (6) for driving the whole oral cavity expansion mechanism (5) is arranged on the support seat (1), and the angle adjusting mechanism (7) is connected between the linkage rod (51) and the tooth support plate (53). The angle adjusting mechanism (7) includes a bottom plate (71) and an adjusting disc (72). The bottom plate (71) is fixed to one end of the linkage rod (51) near the tooth support plate (53). The adjusting disc (72) is fixed to one end of the tooth support plate (53), and the adjusting disc (72) is coaxially connected to the bottom of the bottom plate (71). The oral cavity expansion mechanism (5) further includes a second sliding block (54), a driving rack (55), a linkage gear (56) and a driven rack (57). The second sliding block (54) is slidingly connected in the first limit seat (3). The driving rack (55) is fixed to the second sliding block (54). The linkage gear (56) is rotatably connected to the side wall of the support plate (2), and two are symmetrically arranged above and below. The driving rack (55) is engaged between the two linkage gears (56). The driven rack (57) is arranged on one side of the linkage rod (51) and engaged with the linkage gear (56). The transmission mechanism (6) includes a butt plate (61), a transmission rack (62), a clamping seat (63), a first guide rod (64) and a transmission gear (65). The butt plate (61) is horizontally fixed to one side of the second sliding block (54), and a rectangular notch is provided through the support seat (1). The butt plate (61) passes through the rectangular notch. The transmission rack (62) is fixed to one end of the butt plate (61) away from the second sliding block (54). The first guide rod (64) is fixed to the clamping seat (63), and the first guide rod (64) is slidingly connected to the support seat (1). The clamping seat (63) is rotatably connected with the transmission gear (65). The clamping seat (63) is engaged between the adjacent two transmission racks (62). A first screw rod (66) is rotatably connected to the center of one side of the first guide rod (64) on the card seat (63), and a screw hole is provided through the support seat (1), and the first screw rod (66) is threadedly connected in the screw hole.

2. An oral care check assist retraction device for use in oral care examinations as defined in claim 1, characterized in that The angle adjusting mechanism (7) further comprises a tooth groove (73) and a limiting gear (74), the tooth groove (73) is respectively concavely arranged at the bottom of the bottom plate (71) and the top of the adjusting disc (72), the limiting gear (74) is slidingly connected between the tooth grooves (73) of the bottom plate (71) and the adjusting disc (72), and the depth of the tooth groove (73) on the bottom plate (71) is less than the height of the limiting gear (74), and the depth of the tooth groove (73) on the adjusting disc (72) is greater than the height of the limiting gear (74).

3. An oral care check oral assist prop device as in claim 2, wherein, A reset spring (75) is arranged at the shaft center of the adjusting disc (72), and the top end of the reset spring (75) abuts against the bottom of the limiting gear (74).

4. An oral care check assist prop device for use in oral care examinations as defined in claim 2, wherein The top of the limiting gear (74) is coaxially fixed with a pressing rod (76), the pressing rod (76) partially protrudes from the bottom plate (71) and is rotatably connected with the bottom plate (71).

5. An oral care check auxiliary retraction device for oral care examination according to claim 1, characterized in that, The center of one of the support seats (1) is rotatably connected with a second screw rod (8), and the center of the other support seat (1) is provided with a screw hole, and the second screw rod (8) is threadedly connected in the screw hole.

6. An oral care check auxiliary retraction device for oral care examination according to claim 5, characterized in that, The side of the support seat (1) rotatably connected with the second screw rod (8) is fixed with a second guide rod (9), the second guide rod (9) is provided with two and symmetrically arranged on the upper and lower sides of the second screw rod (8), and the upper and lower ends of the side of the other support seat (1) are provided with through holes, and the second guide rod (9) is slidingly connected in the through holes.

7. An oral care check auxiliary retraction device for oral care examination according to claim 1, characterized in that, The overall structure of the butt joint plate (61) and the transmission rack (62) is symmetrically provided with two groups, one of the butt joint plates (61) is provided with an extension structure, and a spring is arranged in the extension structure.

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