Oral cavity expanding device for oral cavity examination

Abstract

The utility model relates to the field of medical equipment, and discloses an oral cavity expanding device for oral cavity examination, which comprises a supporting plate, an adjusting assembly is arranged on the upper surface of the supporting plate, the adjusting assembly comprises a supporting plate, the upper surface of the supporting plate penetrates through and is rotatably connected with a two-way threaded rod, the outer wall of the two-way threaded rod is in threaded connection with a connecting plate, and the connecting plate is in threaded connection with the supporting plate. A supporting assembly is arranged on the lower surface of the connecting plate, a pressing and positioning assembly is arranged on the upper surface of the connecting plate, a lifting assembly is arranged on the lower surface of the supporting plate, the supporting assembly comprises a positioning plate, a sliding plate is elastically connected to the inner wall of the positioning plate through a compression spring, and a round rod is fixedly connected to the upper surface of the sliding plate. According to the device, the limiting blocks, the limiting springs, the check blocks, the pressing plates and the pressing blocks are matched, so that the transverse expanding plates on the two sides can be independently adjusted, even if the face and the oral cavity of a patient are asymmetrical, the transverse expanding plates can adapt to the face and the oral cavity, and the practicability of the device is enhanced.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to an oral cavity expansion and support device for oral cavity examination. Background Art

[0002] Oral examination is a common medical examination used to evaluate the health of the oral and maxillofacial area. Oral examination helps to detect oral health problems in a timely manner and take appropriate treatment measures to maintain oral health and prevent the occurrence of diseases. During an oral examination, an oral expansion device is usually used to open the patient's mouth to prevent the patient from opening his mouth for a long time and causing facial muscle soreness. However, traditional oral expansion devices cannot be flexibly adjusted according to the patient's mouth shape and are less practical.

[0003] After searching, Chinese patent announcement number: CN218651753U discloses an oral cavity expansion device for oral examination, including a mounting seat, a movable platform is movably connected to the mounting seat, and a first expansion mechanism is installed on the end surface of the movable platform on the same side as the mounting seat. The device expands the upper and lower jaws of the patient's oral cavity through the first expansion mechanism, and expands the positions on both sides of the patient's mouth horizontally through the second expansion mechanism. After expansion, the position in the middle of the patient's oral cavity on the device will be left empty, providing a sufficiently large field of view for the doctor to examine, facilitating the doctor's examination and shortening the doctor's examination time.

[0004] Although the device has certain improvements, the second expansion mechanism of the device is used to expand the two sides of the patient's mouth laterally, and the two sides are opened synchronously, but each patient's mouth is not symmetrical and there is a deviation on both sides. Therefore, this device, like traditional oral expansion devices, cannot be flexibly adjusted according to the patient's mouth shape. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an oral expansion device for oral examination, aiming to improve the problem that the oral expansion device in the prior art cannot be flexibly adjusted according to the patient's mouth shape and its practicality needs to be improved.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an oral expansion device for oral examination, comprising a support plate, an upper surface of the support plate is provided with an adjustment component, the adjustment component comprises a support plate, the upper surface of the support plate is penetrated by and rotatably connected with a bidirectional threaded rod, the outer wall of the bidirectional threaded rod is threadedly connected with a connecting plate, the lower surface of the connecting plate is provided with a support component, the upper surface of the connecting plate is provided with a press positioning component, the lower surface of the support plate is provided with a lifting component, the support component comprises a positioning plate, the inner wall of the positioning plate is elastically connected with a slide plate via a compression spring, the upper surface of the slide plate is fixedly connected with a round rod, and the upper surface of the round rod is fixedly connected with a slider.

[0007] As a further description of the above technical solution:

[0008] The lower surface of the support plate is fixedly connected to the upper surface of the support plate, and the connecting plate is provided with two groups, which are symmetrically distributed up and down with the midline of the bidirectional threaded rod. The slide plate is slidably connected to the inner wall of the positioning plate, and the round rod passes through and is slidably connected to the upper surface of the positioning plate. One end of the compression spring is fixedly connected to the upper surface of the slide plate, and the other end of the compression spring is fixedly connected to the inner wall of the top end of the positioning plate, and the slider is slidably connected to the inner wall of the connecting plate.

[0009] As a further description of the above technical solution:

[0010] The adjustment assembly also includes a longitudinal expansion plate, the rear surface of which is fixedly connected to the front surface of the connecting plate. The support assembly also includes a transverse expansion plate. The inner wall of the sliding block is elastically connected to the limiting block via a limiting spring.

[0011] As a further description of the above technical solution:

[0012] The rear surface of the lateral expansion plate is fixedly connected to the front surface of the positioning plate, the left surface of the limit block is set as an inclined surface, the limit block passes through and is slidably connected to the upper surface of the slider, one end of the limit spring is fixedly connected to the lower surface of the limit block, and the other end of the limit spring is fixedly connected to the inner wall of the bottom end of the slider.

[0013] As a further description of the above technical solution:

[0014] The pressing and positioning assembly comprises a stopper, a pressing block is penetrated through and slidably connected to the upper surface of the connecting plate, and a pressing plate is fixedly connected to the lower surface of the pressing block.

[0015] As a further description of the above technical solution:

[0016] The rear surface of the block is fixedly connected to the inner wall of the rear side of the connecting plate. The block is provided in multiple groups, and the multiple groups of the block are evenly distributed laterally along the inner wall of the connecting plate. The pressure plate is slidably connected to the inner wall of the connecting plate, and a protrusion is provided on the lower surface of the pressure plate.

[0017] As a further description of the above technical solution:

[0018] The lifting assembly includes a hollow tube, the upper surface of the hollow tube is penetrated by and slidably connected to a support rod, the inner wall of the bottom end of the hollow tube is rotatably connected to a one-way threaded rod, the outer wall of the one-way threaded rod is fixedly connected to a bevel gear 1, the right surface of the hollow tube is penetrated by and rotatably connected to a turntable, and the left surface of the turntable is fixedly connected to a bevel gear 2.

[0019] As a further description of the above technical solution:

[0020] The upper surface of the support rod is fixedly connected to the lower surface of the support plate, the one-way threaded rod passes through and is threadedly connected to the lower surface of the support rod, and the second bevel gear is meshed with the first bevel gear.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the lateral expansion plates on both sides can be adjusted separately through the cooperation of the limit block, the limit spring, the stopper, the pressure plate and the pressure block. Even if the patient's face and oral cavity are asymmetrical, the lateral expansion plates can adapt, thereby enhancing the practicality of the device.

[0023] 2. In the utility model, through the cooperation of the slide plate, compression spring, round rod and slider, the positioning plate and the transverse expansion plate can be located in the middle of the two connecting plates, so that the transverse expansion plate can be aligned with the center lines of both sides of the patient's mouth, avoiding the problem of the transverse expansion plate rubbing against the patient's mouth when it is opened, causing discomfort to the patient.

[0024] 3. In the utility model, through the cooperation of the hollow tube, the support rod, the one-way threaded rod, the bevel gear 1, the bevel gear 2, the turntable and the support plate, the patient's chin can be placed on the support plate when being examined. Since the support plate provides support for the patient's head, the problem of neck soreness after a long period of examination can be solved. In addition, the height of the support plate can be flexibly adjusted, and it has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic front view of the three-dimensional structure of the overall device proposed by the utility model;

[0026] Figure 2 This is a schematic cross-sectional view of the three-dimensional structure of the connecting plate and the stopper proposed in the utility model;

[0027] Figure 3 This is a schematic cross-sectional view of the three-dimensional structure of the connecting plate, the stopper, and the sliding block proposed in the utility model;

[0028] Figure 4 This is a schematic cross-sectional view of the three-dimensional structure of the positioning plate proposed by the utility model;

[0029] Figure 5 This is a schematic cross-sectional view of the three-dimensional structure of the support plate proposed by the utility model;

[0030] Figure 6 This is a schematic cross-sectional view of the three-dimensional structure of the hollow tube and the support rod proposed in the utility model.

[0031] Legend:

[0032] 1. Support plate; 21. Support plate; 22. Two-way threaded rod; 23. Connecting plate; 24. Longitudinal expansion plate; 31. Positioning plate; 32. Slide plate; 33. Compression spring; 34. Round rod; 35. Slider; 36. Limit block; 37. Limit spring; 38. Transverse expansion plate; 41. Stop block; 42. Pressure plate; 43. Pressure block; 51. Hollow tube; 52. Support rod; 53. One-way threaded rod; 54. Bevel gear one; 55. Bevel gear two; 56. Turntable. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Reference Figure 1 , Figure 4 and Figure 5 The utility model provides an embodiment: an oral expansion device for oral examination, including a support plate 1 for supporting the patient's head. The upper surface of the support plate 1 is made of rubber and is soft. When the patient examines the oral cavity, the chin can be placed on the support plate 1. The upper surface of the support plate 1 is provided with an adjustment component, and the adjustment component includes a support plate 21. The upper surface of the support plate 21 is penetrated and rotatably connected with a bidirectional threaded rod 22. The bidirectional threaded rod 22 is a prior art and can be implemented by technicians in this field. Since it is a prior art, it will not be described in detail in this case. The bidirectional threaded rod 22 has self-locking properties. The outer wall of 22 is threadedly connected with a connecting plate 23. Rotating the bidirectional threaded rod 22 can drive the connecting plate 23 to move longitudinally. The lower surface of the connecting plate 23 is provided with a supporting assembly, and the upper surface of the connecting plate 23 is provided with a pressing positioning assembly. The lower surface of the support plate 1 is provided with a lifting assembly. The supporting assembly includes a positioning plate 31. The positioning plate 31 can control the position of the lateral expansion plate 38. The inner wall of the positioning plate 31 is elastically connected with a slide plate 32 through a compression spring 33. The upper surface of the slide plate 32 is fixedly connected with a round rod 34. The upper surface of the round rod 34 is fixedly connected with a slider 35. The slide plate 32, the slider 35 and the round rod 34 will move synchronously.

[0035] Reference Figure 1 , Figure 4 and Figure 5The lower surface of the support plate 21 is fixedly connected to the upper surface of the support plate 1. The support plate 21 is located at the rear position on the support plate 1 and will not block the patient's face. Two groups of connecting plates 23 are arranged, which are symmetrically distributed up and down with the midline of the two-way threaded rod 22. When the two-way threaded rod 22 is rotated, the two groups of connecting plates 23 will move in opposite directions, and the distance between the two groups of connecting plates 23 will be expanded, so that the patient's mouth can be opened. The two-way threaded rod 22 has self-locking properties, so the stability of the device can be ensured. Two groups of support components are arranged, which are symmetrically distributed left and right with the center of the connecting plate 23, and two groups of slide plates 32, compression springs 33, round rods 34, and sliders 35 in each group of support components are also arranged. The two groups of slide plates 32, compression springs 33, round rods 34, and sliders 35 are arranged up with the midline of the positioning plate 31 The sliding plate 32 is symmetrically distributed at the bottom, and the sliding plate 32 is slidably connected to the inner wall of the positioning plate 31, and slides longitudinally. The round rod 34 passes through and is slidably connected to the upper surface of the positioning plate 31. One end of the compression spring 33 is fixedly connected to the upper surface of the sliding plate 32, and the other end of the compression spring 33 is fixedly connected to the inner wall of the top of the positioning plate 31. When the sliding plate 32 moves upward, it will squeeze the compression spring 33 to generate a reaction force, and the slider 35 is slidably connected to the inner wall of the connecting plate 23. When the two groups of connecting plates 23 move, they will drive the two groups of sliding plates 32, compression springs 33, round rods 34, and sliders 35 in opposite directions to move in opposite directions and slide horizontally. Since the model of the compression springs 33 used in the upper and lower groups is the same, the elastic force of the compression springs 33 is also the same, so the positioning plate 31 will always be in the middle position between the two groups of connecting plates 23.

[0036] Reference Figure 1 - Figure 3 The adjustment component also includes a longitudinal expansion plate 24, the rear surface of the longitudinal expansion plate 24 is fixedly connected to the front surface of the connecting plate 23, and the support component also includes a transverse expansion plate 38. The inner wall of the slider 35 is elastically connected to the limit block 36 through a limit spring 37.

[0037] Reference Figure 1 - Figure 3 The rear surface of the lateral expansion plate 38 is fixedly connected to the front surface of the positioning plate 31, so the lateral expansion plate 38 will always be in the middle position between the two groups of connecting plates 23, just like the positioning plate 31, and can also maintain the same level with the middle position of the patient's oral cavity. The left surface of the limit block 36 is set as an inclined surface, which squeezes the inclined surface of the limit block 36, and the limit block 36 will move downward. The limit block 36 passes through and is slidably connected to the upper surface of the slider 35. One end of the limit spring 37 is fixedly connected to the lower surface of the limit block 36, and the other end of the limit spring 37 is fixedly connected to the inner wall of the bottom end of the slider 35. When the limit block 36 moves downward, it will squeeze the limit spring 37 to generate a reaction force.

[0038] Reference Figure 1 - Figure 3The pressing and positioning assembly includes a stopper 41, a pressing block 43 is penetrated and slidably connected to the upper surface of the connecting plate 23, and a pressing plate 42 is fixedly connected to the lower surface of the pressing block 43, and the pressing block 43 and the pressing plate 42 will move synchronously.

[0039] Reference Figure 1 - Figure 3 The rear surface of the stopper 41 is fixedly connected to the inner wall of the rear side of the connecting plate 23, and the stopper 41 is provided with multiple groups. The multiple groups of stoppers 41 are evenly distributed laterally along the inner wall of the connecting plate 23. There are equal-width intervals between the multiple groups of stoppers 41, which are limit grooves. The limit blocks 36 can be stuck in these limit grooves. Since the left surface of the limit block 36 is an inclined surface, these stoppers 41 can only limit the limit block 36 in the right direction. The pressing plate 42 is slidably connected to the inner wall of the connecting plate 23. The lower surface of the pressing plate 42 is provided with a protrusion. The shape and size of the protrusion on the lower surface of the pressing plate 42 fit the limit groove. When the pressing plate 42 moves downward, it will squeeze the upper surface of the limit block 36, so that the limit block 36 is disengaged from the limit groove to release the limit.

[0040] Reference Figure 1 and Figure 6 The lifting assembly includes a hollow tube 51, the upper surface of the hollow tube 51 is penetrated by and slidably connected with a support rod 52, and the inner wall of the bottom end of the hollow tube 51 is rotatably connected with a one-way threaded rod 53. The one-way threaded rod 53 is a prior art and can be implemented by technicians in this field. Since it is a prior art, it will not be described in detail in this case. The one-way threaded rod 53 has self-locking properties, and the outer wall of the one-way threaded rod 53 is fixedly connected with a bevel gear 1 54. The right surface of the hollow tube 51 is penetrated by and rotatably connected with a turntable 56. Rotating the turntable 56 can drive the bevel gear 2 55 to rotate synchronously, and the left surface of the turntable 56 is fixedly connected with the bevel gear 2 55.

[0041] Reference Figure 1 and Figure 6 The upper surface of the support rod 52 is fixedly connected to the lower surface of the support plate 1, and the one-way threaded rod 53 passes through and is threadedly connected to the lower surface of the support rod 52. When the one-way threaded rod 53 rotates, it can drive the support rod 52 to move up and down, and the bevel gear 2 55 is meshed with the bevel gear 1 54. When the bevel gear 2 55 rotates, it can drive the bevel gear 1 54 to rotate.

[0042] Working principle: When in use, first adjust the height of the device according to the patient's needs. When adjusting, rotate the turntable 56 to drive the bevel gear 2 55 to rotate. When the bevel gear 2 55 rotates, it will drive the bevel gear 1 54 to rotate. The rotating bevel gear 1 54 will drive the one-way threaded rod 53 to rotate. The rotating one-way threaded rod 53 will drive the support rod 52 and the support plate 1 to move upward. When it moves to a suitable height, release the turntable 56, and the device will be fixed due to the self-locking property of the support rod 52. Similarly, if the device needs to be adjusted downward, rotate the turntable 56 in the opposite direction to drive the entire device to move downward.

[0043] After the height adjustment of the device is completed, the patient places the head on the support plate 1 and clamps the teeth on the two groups of longitudinal expansion plates 24 facing oppositely, and then the two-way threaded rod 22 is screwed to drive the two groups of connecting plates 23 and the longitudinal expansion plates 24 to move in opposite directions, so as to open the patient's mouth up and down. In the process of opening the connecting plate 23, the two groups of sliders 35, round rods 34, compression springs 33 and slide plates 32 in opposite directions are pulled to move in opposite directions. Since the elastic force of the round rod 34 is the same, the two groups of sliders 35, round rods 34, compression springs 33 and slide plates 32 move the same distance, so the transverse expansion plates 38 will be in the two groups. The connecting plate 23 is in the middle position. At this time, the movable positioning plate 31 is opened toward the two sides of the connecting plate 23. During the movement, the inclined surface of the limit block 36 will be squeezed and moved downward to disengage from the limit groove, so it will not cause obstruction. The moving positioning plate 31 will drive the lateral expansion plate 38 to move synchronously to open the patient's mouth laterally. When it moves to the appropriate position, it stops moving. The limit block 36 will be stuck with another limit groove to form a limit to ensure the stability of the device. The positioning plates 31 on both sides can be adjusted separately, so even if the distance between the left and right faces of the patient is different, the lateral expansion plate 38 can be used normally. After the patient's mouth is opened, the examination begins.

[0044] After the inspection is completed, the pressure block 43 is pressed downward to drive the pressure plate 42 to move downward to squeeze the limit block 36 so that the limit block 36 disengages from the limit groove to release the limit. After the limit is released, the positioning plate 31 and the horizontal expansion plate 38 are moved to the middle of the connecting plate 23, and the two-way threaded rod 22 is rotated in the opposite direction to drive the two groups of connecting plates 23 to move together so that the patient's mouth is not stretched open. Then the device is taken out of the patient's mouth and then cleaned and disinfected for subsequent use.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An oral cavity expansion device for oral examination, comprising a support plate (1), characterized in that: The upper surface of the support plate (1) is provided with an adjustment assembly, the adjustment assembly comprises a support plate (21), the upper surface of the support plate (21) is penetrated by and rotatably connected with a bidirectional threaded rod (22), the outer wall of the bidirectional threaded rod (22) is threadedly connected with a connecting plate (23), the lower surface of the connecting plate (23) is provided with a support assembly, the upper surface of the connecting plate (23) is provided with a pressing positioning assembly, the lower surface of the support plate (1) is provided with a lifting assembly, the support assembly comprises a positioning plate (31), the inner wall of the positioning plate (31) is elastically connected with a slide plate (32) via a compression spring (33), the upper surface of the slide plate (32) is fixedly connected with a round rod (34), and the upper surface of the round rod (34) is fixedly connected with a slider (35).

2. The oral cavity expansion device for oral cavity inspection according to claim 1, characterized in that: The lower surface of the support plate (21) is fixedly connected to the upper surface of the support plate (1); the connecting plate (23) is provided with two groups, which are symmetrically distributed up and down with the center line of the bidirectional threaded rod (22); the slide plate (32) is slidably connected to the inner wall of the positioning plate (31); the round rod (34) penetrates and is slidably connected to the upper surface of the positioning plate (31); one end of the compression spring (33) is fixedly connected to the upper surface of the slide plate (32); the other end of the compression spring (33) is fixedly connected to the inner wall of the top end of the positioning plate (31); and the slider (35) is slidably connected to the inner wall of the connecting plate (23).

3. The oral cavity expansion device for oral cavity inspection according to claim 1, characterized in that: The adjustment assembly also includes a longitudinal expansion plate (24), the rear surface of which is fixedly connected to the front surface of the connecting plate (23), and the support assembly also includes a transverse expansion plate (38). The inner wall of the sliding block (35) is elastically connected to the limiting block (36) via a limiting spring (37).

4. The oral cavity expansion device for oral cavity inspection according to claim 3, characterized in that: The rear surface of the transverse expansion plate (38) is fixedly connected to the front surface of the positioning plate (31), the left surface of the limit block (36) is set as an inclined surface, the limit block (36) passes through and is slidably connected to the upper surface of the slider (35), one end of the limit spring (37) is fixedly connected to the lower surface of the limit block (36), and the other end of the limit spring (37) is fixedly connected to the inner wall of the bottom end of the slider (35).

5. The oral cavity expansion device for oral cavity inspection according to claim 1, characterized in that: The pressing and positioning assembly comprises a stopper (41), a pressing block (43) passes through and is slidably connected to the upper surface of the connecting plate (23), and a pressing plate (42) is fixedly connected to the lower surface of the pressing block (43).

6. The oral cavity expansion device for oral cavity inspection according to claim 5, characterized in that: The rear surface of the stopper (41) is fixedly connected to the inner wall of the rear side of the connecting plate (23), and the stopper (41) is provided in multiple groups. The multiple groups of the stopper (41) are evenly distributed laterally along the inner wall of the connecting plate (23). The pressing plate (42) is slidably connected to the inner wall of the connecting plate (23), and a protrusion is provided on the lower surface of the pressing plate (42).

7. The oral cavity expansion device for oral cavity inspection according to claim 1, characterized in that: The lifting assembly comprises a hollow tube (51), the upper surface of the hollow tube (51) is penetrated by a support rod (52) and is slidably connected thereto, the inner wall of the bottom end of the hollow tube (51) is rotatably connected thereto a one-way threaded rod (53), the outer wall of the one-way threaded rod (53) is fixedly connected thereto a bevel gear 1 (54), the right surface of the hollow tube (51) is penetrated by a turntable (56) and is rotatably connected thereto, and the left surface of the turntable (56) is fixedly connected thereto a bevel gear 2 (55).

8. The oral cavity expansion device for oral cavity inspection according to claim 7, characterized in that: The upper surface of the support rod (52) is fixedly connected to the lower surface of the support plate (1), the one-way threaded rod (53) passes through and is threadedly connected to the lower surface of the support rod (52), and the second bevel gear (55) is meshed with the first bevel gear (54).

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