Mouth and tooth distraction device for stomatology department examination

Abstract

The oral tooth spreader for stomatology department examination comprises a fixed seat, spreading plates are hinged to the left side of the fixed seat, and the spreading plates are symmetrically distributed up and down relative to the center point of the fixed seat; a bidirectional threaded rod and a telescopic rod are hinged to the left sides and the right sides of the opposite faces of the two opening plates correspondingly, movable sleeves are arranged on the outer sides of the two ends of the bidirectional threaded rod in a sleeving mode, tooth grooves are formed in the right sides of the opposite faces of the two opening plates, and a rotary disc is fixedly arranged on the outer side of the middle of the bidirectional threaded rod in a sleeving mode. According to the oral tooth dilator for stomatology department examination, an instrument is placed in the oral cavity of a patient, a rotating disc is rotated, a bidirectional threaded rod rotates, two movable sleeves are driven to move oppositely, two dilating plates can rotate oppositely, the oral cavity of the patient is dilated, medical staff can conveniently examine the oral cavity of the patient, meanwhile, a second air bag is expanded, and the oral cavity of the patient is dilated. Therefore, the comfort degree of the oral teeth of the patient when the oral teeth of the patient are opened is improved.

Description

Technical Field

[0001] This utility model relates to the field of dental examination technology, specifically to a dental retractor for dental examination. Background Technology

[0002] Dental examination is a medical procedure that comprehensively examines the oral cavity and maxillofacial region. During dental examinations, auxiliary instruments are used to open the patient's mouth to facilitate the examination by medical staff. However, there are drawbacks: currently available oral retractors are either solid, one-piece, or electrically adjustable. Solid, one-piece retractors have a fixed opening size and angle that cannot be adjusted, while electrically adjustable retractors, although allowing for angle adjustment, are bulky, easily obstruct the patient's mouth, and interfere with intraoral procedures, resulting in poor flexibility in practical use. To address these shortcomings, existing technology (application number: 202320990562.X, authorized announcement date: 2023) addresses these issues. Chinese Patent No. 09-22 discloses an oral retractor. An upper and lower bite-bearing portion are rotatably connected by a connecting portion. A support member is provided between the upper and lower bite-bearing portions, and the support member is locked between the upper and lower bite-bearing portions by a locking mechanism. This provides an adjustable oral retractor size, resulting in higher adaptability and comfort. Compared to traditional retractors, this oral retractor is material-saving and cost-effective in manufacturing, and facilitates oral retractor opening. Through the bite-bearing base plate, protective sides, and tooth grooves provided on the upper and lower bite-bearing portions, the upper and lower teeth bite within the tooth grooves of the bite-bearing base plate between the two protective sides, enabling the oral retractor to operate with bite limit and stabilization.

[0003] The existing technology involves rotating the upper and lower bite plates outward and tightening the nuts to lock them in place. However, each time the rotation angle of the upper and lower bite plates is adjusted, the nuts must first be loosened to release their fixation, and then the opening angle of the upper and lower bite plates must be adjusted and the nuts tightened again to fix them in place. This makes the operation time-consuming and laborious, and inconvenient to use. In addition, because the bite plates are made of a relatively hard material, they cause oral discomfort to patients when in contact with the patient's oral cavity wall.

[0004] Therefore, we proposed that dental retractors for oral examinations can effectively solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an oral retractor for dental examinations, which solves the problem mentioned in the background art that each time the rotation angle of the upper and lower bite parts is adjusted, the nuts must first be loosened to release their fixation, and then the opening angle of the upper and lower bite parts is adjusted and the nuts are tightened to fix them. This makes the operation time-consuming and laborious, and inconvenient to use. At the same time, because the bite parts are made of a relatively hard material, they cause oral discomfort to patients when in contact with the inner wall of the patient's mouth.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dental retractor for oral examination, comprising a fixed base, wherein each left side of the fixed base is hinged with a retractor plate, and the retractor plates are symmetrically distributed about the center point of the fixed base; a bidirectional threaded rod and a telescopic rod are respectively hinged to the left and right sides of the opposite surfaces of the two retractor plates, and movable sleeves are fitted on the outer sides of both ends of the bidirectional threaded rod; tooth grooves are formed on the right sides of the opposite surfaces of the two retractor plates; a turntable is fixedly fitted on the outer side of the middle part of the bidirectional threaded rod; and a second airbag is embedded and installed on the left side of the opposite surfaces of the two retractor plates.

[0007] Preferably, the threads on the outer sides of both ends of the bidirectional threaded rod have opposite directions, the two movable sleeves are threadedly connected to the bidirectional threaded rod, and the end of the movable sleeve away from the bidirectional threaded rod is hingedly connected to the side of the support plate.

[0008] Preferably, the side of the expansion plate is symmetrically fixed with protective side plates about the center point of the tooth alveolar bone, and the protective side plates are made of medical-grade silicone material.

[0009] Preferably, the fixed base has an internal receiving groove, and the receiving groove is provided with a first airbag. A rack is connected to the right side of the fixed base, and a compression plate is fixed to the left end of the rack. A drive gear is sleeved and fixed to the outside of the bidirectional threaded rod. A connecting tube is fixed between the first airbag and the second airbag.

[0010] Preferably, the rack is slidably disposed inside the fixed seat, and the left end of the rack extends into the interior of the protective side plate, and the left side of the extrusion plate is in contact with the surface of the first airbag.

[0011] Preferably, the right end of the rack extends out of the right side of the fixed seat, and the rack and the drive gear are meshed.

[0012] Preferably, the first airbag and the second airbag are connected by a connecting tube.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the oral cavity retractor for dental examination adopts a novel structural design, the specific contents of which are as follows: (1) the instrument is placed in the patient's oral cavity and the turntable is rotated so that the bidirectional threaded rod rotates and drives the two movable sleeves to move in opposite directions, which can rotate the two retractor plates in opposite directions, thereby opening the patient's oral cavity and facilitating medical staff to examine the patient's oral cavity; furthermore, since the movable sleeve and the bidirectional threaded rod are threadedly connected, the retractor plates after rotation can be locked to prevent them from falling off during use.

[0014] (2) The tooth sockets are designed to allow the patient’s teeth to be placed in them, and the bite is limited after the teeth are opened. The protective side plate can fit into the patient’s teeth, making the open bite more stable.

[0015] (3) When the bidirectional threaded rod rotates in the forward direction, it can drive the drive gear to rotate. At the same time, the rack drives the extrusion plate to extrude the first airbag, so that the gas inside the first airbag enters the second airbag through the connecting tube. At this time, the second airbag expands and comes into contact with the inner wall of the patient's mouth, thereby improving the patient's comfort when the mouth is stretched open. Furthermore, when the bidirectional threaded rod rotates in the reverse direction, the rack drives the extrusion plate to reset. At this time, the first airbag returns to its original state, and the gas in the second airbag is drawn back through the connecting tube. At this time, the second airbag returns to its original state and does not come into contact with the inner wall of the patient's mouth. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main cross-section of the present invention;

[0017] Figure 2 This is a schematic diagram of the outward rotation structure of the two supporting plates of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the support plate of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the movable sleeve and bidirectional threaded rod of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the first airbag of this utility model;

[0021] Figure 6 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. Fixed base; 2. Spreading plate; 3. Two-way threaded rod; 4. Movable sleeve; 5. Tooth groove; 6. Protective side plate; 7. Receiving groove; 8. First airbag; 9. Second airbag; 10. Connecting pipe; 11. Rack; 12. Extrusion plate; 13. Drive gear; 14. Turntable. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-6 The present invention provides the following technical solution: a dental retractor for dental examination;

[0025] Example 1: To address the problem in the prior art that each adjustment of the upper and lower bite plates requires first loosening the nuts to release their fixation, then adjusting the opening angle of the upper and lower bite plates and tightening the nuts to fix them, resulting in a time-consuming and laborious operation that is inconvenient to use, and also because the bite plates are made of a relatively hard material, causing discomfort to the patient when in contact with the patient's oral cavity wall, the following solution is disclosed. Please refer to the following for details. Figures 1-6 As shown, the device includes a fixed base 1, with a support plate 2 hinged to the left side of the fixed base 1, and the support plates 2 are symmetrically distributed about the center point of the fixed base 1. Two bidirectional threaded rods 3 and telescopic rods are respectively hinged to the left and right sides of the opposite faces of the two support plates 2. Movable sleeves 4 are fitted on the outer sides of both ends of the bidirectional threaded rods 3. The threads on the outer sides of both ends of the bidirectional threaded rods 3 are in opposite directions. The two movable sleeves 4 are threadedly connected to the bidirectional threaded rods 3. The end of the movable sleeve 4 away from the bidirectional threaded rods 3 is hinged to the side of the support plate 2. A turntable 14 is fixedly fitted on the outer side of the middle of the bidirectional threaded rods 3. A second airbag 9 is embedded and installed on the left side of the opposite faces of the two support plates 2.

[0026] The instrument is placed in the patient's mouth. At this time, the medical staff manually rotates the turntable 14 in the forward direction, so that the turntable 14 drives the bidirectional threaded rod 3 to rotate in the forward direction. At the same time, the two movable sleeves 4 move in opposite directions on the outside of the bidirectional threaded rod 3 (and drive the telescopic rod to extend), which can rotate the two opening plates 2 in opposite directions, thereby opening the patient's mouth, making it easier for the medical staff to examine the patient's mouth. Since the movable sleeves 4 and the bidirectional threaded rod 3 are threadedly connected, the rotating opening plates 2 can be automatically locked to prevent them from falling off during use and to ensure the stability after opening.

[0027] Example 2: Unlike Example 1, this example utilizes a protective side plate 6 that fits snugly against the patient's teeth, resulting in a more stable bite after opening. See details... Figure 1 and Figure 3As shown, tooth grooves 5 are provided on the right side of the opposite sides of the two support plates 2. Protective side plates 6 are symmetrically fixed on the side of the support plates 2 about the center point of the tooth grooves 5, and the protective side plates 6 are made of medical silicone material.

[0028] The tooth socket 5 allows the patient's teeth to be placed in it, and the bite is limited after the teeth are opened. The protective side plate 6 can fit into the patient's teeth, making the open bite more stable.

[0029] Example 3: Unlike Example 2, this example utilizes the inflating of the second airbag 9, which can contact the inner wall of the patient's mouth, thereby improving the patient's comfort when their mouth is stretched open. See details... Figures 1-5 As shown, the fixed base 1 has an internal receiving groove 7, and the receiving groove 7 is provided with a first airbag 8. A rack 11 is connected to the right side of the fixed base 1, and a pressing plate 12 is fixed to the left end of the rack 11. The rack 11 is slidably disposed inside the fixed base 1, and the left end of the rack 11 extends into the interior of the protective side plate 6. The left side of the pressing plate 12 is in contact with the surface of the first airbag 8. A drive gear 13 is sleeved and fixed on the outside of the bidirectional threaded rod 3. The right end of the rack 11 extends out of the right side of the fixed base 1, and the rack 11 and the drive gear 13 are meshed. A connecting pipe 10 is fixed between the first airbag 8 and the second airbag 9, and the first airbag 8 and the second airbag 9 are connected through the connecting pipe 10.

[0030] When the bidirectional threaded rod 3 rotates in the forward direction, it drives the drive gear 13 to rotate. At the same time, the rack 11 drives the compression plate 12 to compress the first airbag 8, so that the gas inside the first airbag 8 enters the second airbag 9 through the connecting tube 10. At this time, the second airbag 9 inflates and comes into contact with the inner wall of the patient's mouth, thereby improving the patient's comfort when the mouth is opened. Then, when the bidirectional threaded rod 3 rotates in the reverse direction, the rack 11 drives the compression plate 12 to reset. At this time, the first airbag 8 returns to its original shape, and the gas in the second airbag 9 is drawn back in through the connecting tube 10. At this time, the second airbag 9 returns to its original shape and does not come into contact with the inner wall of the patient's mouth, making it easier to remove the instrument later.

[0031] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mouth and teeth expander for dental examination, comprising a fixed base (1), the left side of the fixed base (1) is hingedly connected with an expander plate (2), and the expander plates (2) are symmetrically distributed above and below the center point of the fixed base (1); characterized in that, Two opposite sides of the two said expansion plates (2) are respectively hinged with bidirectional threaded rods (3) and telescopic rods, and the outer sides of the two ends of the bidirectional threaded rods (3) are respectively sleeved with movable sleeves (4), the right sides of the two said expansion plates (2) are respectively provided with tooth grooves (5), the outer side of the middle part of the bidirectional threaded rod (3) is sleeved with a rotating disc (14), and the left sides of the two said expansion plates (2) are respectively embedded with second air bags (9).

2. The mouth and teeth spreader according to claim 1, characterized in that: The threads on the outer sides of the two ends of the bidirectional threaded rod (3) are in opposite directions, the movable sleeves (4) and the bidirectional threaded rod (3) are in threaded connection, and the end of the movable sleeve (4) away from the bidirectional threaded rod (3) is in hinged connection with the side of the expansion plate (2).

3. The mouth and teeth spreader according to claim 1, wherein: The expansion plate (2) is symmetrically fixed with a protective side plate (6) about the center point of the tooth groove (5), and the protective side plate (6) is made of medical silica gel.

4. The mouth and teeth spreader according to claim 1, wherein: The inside of the fixed seat (1) is provided with a containing groove (7), and the inside of the containing groove (7) is provided with a first air bag (8), the right side of the inside of the fixed seat (1) is connected with a rack (11), and the left end of the rack (11) is fixed with an extrusion plate (12), the outer side of the bidirectional threaded rod (3) is sleeved with a driving gear (13), and the first air bag (8) and the second air bag (9) are fixedly connected with a connecting pipe (10).

5. The mouth and teeth spreader according to claim 4, characterized in that: The rack (11) is slidably arranged in the inside of the fixed seat (1), and the left end of the rack (11) extends into the inside of the protective side plate (6), and the left side of the extrusion plate (12) is in contact with the surface of the first air bag (8).

6. The mouth and teeth spreader according to claim 4, wherein: The right end of the rack (11) extends out of the right side of the fixed seat (1), and the rack (11) and the driving gear (13) are in meshing connection.

7. The mouth and teeth spreader according to claim 4, wherein: The first air bag (8) and the second air bag (9) are connected in communication through the connecting pipe (10).

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