Gastroscopic oral dilator

By adjusting the mounting plate angle and position of the gastroscopy oral dilator using the adjustable components and electric telescopic rod, the problems of uneven force and low dilution efficiency caused by misaligned teeth are solved, achieving tight tooth occlusion and efficient dilution, thus ensuring the smooth conduct of gastroscopy.

CN120643174BActive Publication Date: 2026-06-26JIANGSU CANCER HOSPITAL

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU CANCER HOSPITAL
Filing Date
2025-07-18
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing endoscopic oral dilators have problems such as uneven force distribution on teeth when dealing with misaligned teeth, low dilution efficiency, large size, and difficulty in insertion into the oral cavity.

Method used

It employs adjustment components, tooth support components, and tooth fixation components. The angle and position of the mounting plate are adjusted by an electric telescopic rod and motor to ensure that the teeth bite tightly and are fixed, preventing the teeth from moving out, and achieving uniform force and efficient expansion support.

Benefits of technology

It achieves uniform force distribution on teeth, high expansion efficiency, avoids tooth damage, and the device is small in size and easy to insert into the oral cavity, thus improving the reliability and efficiency of gastroscopy.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a gastroscope oral cavity expander, and relates to the technical field of gastroscope auxiliary equipment, which comprises a bottom plate, the top end side wall of the bottom plate is fixedly connected with a support rod, one end of the support rod is fixedly connected with a first bidirectional electric telescopic rod, the telescopic ends of the first bidirectional electric telescopic rod are fixedly connected with support plates, the side walls of the support plates are all abuttingly connected with side plates, and the side walls of the two side plates are all fixedly connected with mounting plates. When the oral cavity needs to be expanded, the oblique angle of the fixed plate inside the bite groove can be adjusted according to the oblique angle of the teeth in the oral cavity of the patient, the teeth of the patient can be completely bitten in the bite groove when the teeth of the patient are bitten in the bite groove, the force on the teeth of the patient is uniform, the oblique angle of the corresponding clamping plate can be adjusted according to the oblique angle of the side wall of the teeth of the patient, the inner wall of the teeth can be fixed by the clamping plate, the teeth in the oral cavity of the patient can be tightly connected with the mounting plate, and the gastroscope can be conveniently performed on the patient.
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Description

Technical Field

[0001] This invention belongs to the technical field of gastroscopy auxiliary equipment, and particularly relates to a gastroscopy oral cavity dilator. Background Technology

[0002] A gastroscopy is a precision and expensive optical instrument (its outer diameter is usually about 9 to 11 mm). When the endoscope is inserted into the esophagus through the mouth, if the patient bites down unconsciously due to tension, discomfort, or pharyngeal reflex, the hard teeth will bite directly onto the endoscope, causing serious damage to the endoscope. It may even cause the internal optical fiber of the endoscope to break, affecting image transmission. Therefore, when performing a gastroscopy on a patient, it is necessary to use an oral dilator to support the teeth.

[0003] When it is necessary to use an oral speculum to expand teeth, the existing technology usually uses an oral speculum with a central hole for moving the endoscope tube to support the teeth. However, because the arrangement of teeth in different patients' mouths may be irregular and some teeth may be tilted, when using an oral speculum with a central hole for moving the endoscope tube to support the teeth, if the patient's teeth are tilted, the teeth in the patient's mouth cannot fully occlude in the groove inside the oral speculum, resulting in uneven force on the teeth in the patient's mouth. During the patient's endoscopy, the unconscious biting action can easily damage the teeth, reducing the reliability of the tooth expansion. In addition, the oral speculum with a central hole for moving the endoscope tube is relatively large, and it is difficult to insert this oral speculum into the patient's mouth, which greatly reduces the expansion efficiency of the patient's mouth.

[0004] Therefore, we propose a gastroscopic oral dilator to solve the above problems. Summary of the Invention

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

[0006] An endoscopic oral cavity dilator includes a base plate. A support rod is fixedly connected to the top side wall of the base plate. A first bidirectional electric telescopic rod is fixedly connected to one end of the support rod. A support plate is fixedly connected to the telescopic end of the first bidirectional electric telescopic rod. Side plates are abuttingly connected to the side walls of the support plates. Mounting plates are fixedly connected to the side walls of the two side plates. An adjustment component for adjusting the tilt angle of the mounting plates according to the size of oral cavity opening and closing is fixedly connected to the side walls of the two mounting plates at opposite ends. A tooth support component for facilitating occlusion is fixedly connected to the inner wall of the mounting plate. A tooth fixation component for fixing the inner and outer walls of the teeth is provided on one side of the tooth support component.

[0007] Preferably, the adjustment assembly includes two sets of connecting plates symmetrically and fixedly connected to one side wall of two mounting plates. Each set of connecting plates has two plates. A round rod is fixedly connected to the side wall of each connecting plate. The two ends of the round rod are rotatably connected to the same clamping plate. A first motor is fixedly connected to the side wall of each clamping plate. The output end of the first motor passes through the side wall of the corresponding clamping plate and is fixedly connected to one end of the round rod. The side wall of each set of clamping plates is provided with the same second bidirectional electric telescopic rod. The telescopic ends of the second bidirectional electric telescopic rod are fixedly connected to the side wall of the corresponding clamping plate.

[0008] Preferably, the tooth support assembly includes a slide rail fixedly connected to the inner wall of the mounting plate, a slide plate slidably connected to the top side wall of the slide rail, a stop block fixedly connected to the inner wall of the mounting plate, an annular opening for the slide plate to move on the top side wall of the stop block, and a second motor fixedly connected to the inner wall of the slide plate.

[0009] Preferably, the output end of the second motor is fixedly connected to a first electric telescopic rod, the telescopic end of the first electric telescopic rod is fixedly connected to a locking block, the inner wall of the locking block is rotatably connected to a rotating rod, the side wall of the locking block is fixedly connected to a third motor, and the output end of the third motor passes through the side wall of the locking block and is fixedly connected to one end of the rotating rod.

[0010] Preferably, a connecting block is fixedly connected to the wall of the rotating rod, and a fixing plate is fixedly connected to the top side wall of the connecting block. A meshing groove is opened on the bottom inner wall of the fixing plate, and a meshing rubber is fixedly connected inside the meshing groove.

[0011] Preferably, the dental fixation assembly includes a first groove formed on the inner wall of both ends of the fixation plate, a second groove formed on the inner wall of each of the first grooves, a fourth motor fixedly connected to the inner wall of each of the second grooves, and a side rod fixedly connected to the output end of each of the fourth motors.

[0012] Preferably, one end of the side rod is rotatably connected to the inner wall of the first groove, and a second electric telescopic rod is fixedly connected to the rod wall of the side rod. The telescopic end of the second electric telescopic rod is fixedly connected to an installation block. A T-shaped sliding groove is opened on the side wall of the installation block, and a clamping plate is movably connected inside the T-shaped sliding groove.

[0013] Preferably, the mounting block has two symmetrically opened screw holes on its side wall, and bolts are rotatably connected to the corresponding screw holes. The outer wall of each bolt is rotatably connected to a mounting seat. The side wall of the two mounting seats is fixedly connected to the same baffle at one end, and the side wall of the baffle abuts against the side wall of the clamp.

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

[0015] By incorporating adjustable, tooth-supporting, and tooth-fixing components, the tilt angle of the occlusal groove within the fixing plate can be adjusted according to the tilt angle of the patient's teeth when oral cavity expansion is required. This ensures that the patient's teeth are fully engaged in the occlusal groove, resulting in even force distribution. Furthermore, the tilt angle of the corresponding splint is adjusted based on the tilt angle of the patient's tooth lateral walls, facilitating splint fixation of the tooth's inner walls and ensuring a tight connection between the patient's teeth and the mounting plate. This facilitates gastroscopy. As the mounting plate enters the patient's mouth, the distance between the two mounting plates continuously increases, further expanding the oral cavity. This avoids the difficulty of inserting a bulky oral dilator with a central port for the gastroscopy tube, which would otherwise be challenging. During the expansion process, the angle of the mounting plate is continuously adjusted using connecting plates, ensuring that the occlusal groove within the fixing plate always aligns with the corresponding teeth, preventing teeth from shifting out of the fixing plate during expansion. This significantly improves the efficiency and reliability of oral cavity expansion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a partial structural diagram of the present invention. Figure 1 ;

[0018] Figure 3 This is a partial structural diagram of the present invention. Figure 2 ;

[0019] Figure 4 This is a partial structural diagram of the present invention. Figure 3 ;

[0020] Figure 5 This is a partial structural diagram of the present invention. Figure 4 ;

[0021] Figure 6 This is a partial structural diagram of the present invention. Figure 5 ;

[0022] Figure 7 For the present invention Figure 6 Enlarged view of part A.

[0023] In the diagram: 1. Base plate; 2. Support rod; 3. First bidirectional electric telescopic rod; 4. Support plate; 5. Side plate; 6. Mounting plate; 7. Adjustment assembly; 71. Connecting plate; 72. Round rod; 73. Clamping plate; 74. First motor; 75. Second bidirectional electric telescopic rod; 8. Tooth support assembly; 81. Slide rail; 82. Slide plate; 83. Stop block; 84. Annular opening; 85. Second motor; 86. First electric telescopic rod; 87. Clamping block; 88. Rotating rod; 89. Third motor; 810. Connecting block; 811. Fixing plate; 812. Biting groove; 813. Biting rubber; 9. Tooth fixing assembly; 91. First groove; 92. Second groove; 93. Fourth motor; 94. Side rod; 95. Second electric telescopic rod; 96. Mounting block; 97. T-shaped slide; 98. Clamping plate; 99. Bolt; 910. Mounting seat; 911. Baffle. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] The following electrical components are all electrically connected to the external PLC controller.

[0026] Reference Figure 1 - Figure 7 An endoscopic oral dilator includes a base plate 1. A support rod 2 is fixedly connected to the top side wall of the base plate 1. A first bidirectional electric telescopic rod 3 is fixedly connected to one end of the support rod 2. A support plate 4 is fixedly connected to the telescopic end of the first bidirectional electric telescopic rod 3. Side plates 5 are abuttingly connected to the side walls of the support plates 4. Mounting plates 6 are fixedly connected to the side walls of the two side plates 5. An adjustment component 7 for adjusting the tilt angle of the mounting plates 6 according to the size of the mouth opening and closing is fixedly connected to the side walls of the two mounting plates 6 at opposite ends. A tooth support component 8 for facilitating teeth biting is fixedly connected to the inner wall of the mounting plate 6. A tooth fixing component 9 for fixing the inner and outer walls of the teeth is provided on one side of the tooth support component 8.

[0027] In this embodiment, the adjustment component 7 includes two sets of connecting plates 71 symmetrically and fixedly connected to the sidewalls of two mounting plates 6 at opposite ends. Each set of connecting plates 71 has two plates. A round rod 72 is fixedly connected to the sidewall of each connecting plate 71. The two ends of the round rod 72 are rotatably connected to the same clamping plate 73. A first motor 74 is fixedly connected to the sidewall of each clamping plate 73. The output end of the first motor 74 passes through the sidewall of the corresponding clamping plate 73 and is fixedly connected to one end of the round rod 72. The sidewall of each set of clamping plates 73 at opposite ends is provided with the same second bidirectional electric telescopic rod 75. The telescopic ends of the second bidirectional electric telescopic rod 75 are fixedly connected to the sidewall of the corresponding clamping plate 73.

[0028] Specifically, after the mounting plate 6 is inserted into the patient's oral cavity, the distance between the two mounting plates 6 is continuously increased to expand the oral cavity. This avoids the large size of the oral cavity dilator with the central hole for moving the gastroscope tube, which would make it difficult to insert into the patient's oral cavity. Furthermore, during the process of expanding the oral cavity with the mounting plate 6, the angle of the mounting plate 6 is continuously adjusted using the connecting plate 71 so that the occlusal groove 812 in the fixing plate 811 always corresponds to the corresponding tooth. This prevents the tooth from moving out of the fixing plate 811 during the expansion process, greatly improving the efficiency and reliability of expanding the oral cavity.

[0029] In this embodiment, the tooth support assembly 8 includes a slide rail 81 fixedly connected to the inner wall of the mounting plate 6, a slide plate 82 slidably connected to the top side wall of the slide rail 81, a stop block 83 fixedly connected to the inner wall of the mounting plate 6, an annular opening 84 for the slide plate 82 to move on the top side wall of the stop block 83, and a second motor 85 fixedly connected to the inner wall of the slide plate 82.

[0030] The output end of the second motor 85 is fixedly connected to the first electric telescopic rod 86. The telescopic end of the first electric telescopic rod 86 is fixedly connected to the locking block 87. The inner wall of the locking block 87 is rotatably connected to the rotating rod 88. The side wall of the locking block 87 is fixedly connected to the third motor 89. The output end of the third motor 89 passes through the side wall of the locking block 87 and is fixedly connected to one end of the rotating rod 88.

[0031] A connecting block 810 is fixedly connected to the rod wall of the rotating rod 88. A fixing plate 811 is fixedly connected to the top side wall of the connecting block 810. A meshing groove 812 is opened on the bottom inner wall of the fixing plate 811. A meshing rubber 813 is fixedly connected inside the meshing groove 812.

[0032] The dental fixation assembly 9 includes a first groove 91 formed on the inner wall of both ends of the fixation plate 811, a second groove 92 formed on the inner wall of each first groove 91, a fourth motor 93 fixedly connected to the inner wall of each second groove 92, and a side rod 94 fixedly connected to the output end of each fourth motor 93.

[0033] One end of the side rod 94 is rotatably connected to the inner wall of the first groove 91. The side rod 94 is fixedly connected to the second electric telescopic rod 95. The telescopic end of the second electric telescopic rod 95 is fixedly connected to the mounting block 96. The side wall of the mounting block 96 is provided with a T-shaped slide groove 97. The T-shaped slide groove 97 is movably connected to the clamping plate 98.

[0034] The mounting block 96 has two symmetrical screw holes on its side wall, and bolts 99 are rotatably connected to the corresponding screw holes. The outer walls of the bolts 99 are rotatably connected to mounting seats 910. The side walls of the two mounting seats 910 are fixedly connected to the same baffle 911, and the side wall of the baffle 911 abuts against the side wall of the clamp 98.

[0035] Specifically, when oral cavity expansion is required, the tilt angle of the occlusal groove 812 in the fixing plate 811 can be adjusted according to the tilt angle of the patient's teeth, so that when the patient's teeth bite into the occlusal groove 812, the patient's teeth are fully engaged in the occlusal groove 812, so that the patient's teeth are evenly stressed. Furthermore, the tilt angle of the corresponding splint 98 can be adjusted according to the tilt angle of the side wall of the patient's teeth, so that the splint 98 can be used to fix the inner wall of the teeth, ensuring that the patient's teeth can be tightly connected to the mounting plate 6, which is convenient for performing gastroscopy on the patient.

[0036] The operating principle of the present invention is described as follows:

[0037] In this invention, when it is necessary to expand the patient's cavity to facilitate gastroscopy, the first bidirectional electric telescopic rod 3 is controlled to retract, driving the support plate 4 to move, so that the support plate 4 is not fixed to the side plate 5. Then the doctor removes the mounting plate 6, and then controls the slide rail 81 to start, driving multiple sliding plates 82 to move, causing multiple fixing plates 811 to move. After the multiple fixing plates 811 move to the position corresponding to the teeth in the patient's mouth, the slide rail 81 is controlled to close, and then the corresponding third motor 89 is controlled to start, driving the rotating rod 88 to rotate. During the rotation of the rotating rod 88, the connecting block 810 is controlled to drive the fixing plate 811 to rotate. After the tilt angle of the side wall of the fixing plate 811 is the same as the tilt angle of the corresponding tooth, the third motor 89 is controlled to close, and then the control... The second motor 85 starts, driving the fixing plate 811 to rotate. After the occlusal groove 812 rotates to the position matching the corresponding tooth, the second motor 85 is turned off. Then, the doctor places the mounting plate 6 into the patient's mouth. The patient's teeth then bite into the corresponding occlusal groove 812, making contact with the corresponding occlusal rubber 813. The fourth motor 93 then starts, driving the corresponding side rod 94 to rotate. During the rotation of the side rod 94, it drives the mounting block 96 and the clamp 98 to rotate. After the tilt angle of the clamp 98 is the same as the tilt angle of the inner wall of the corresponding tooth, the fourth motor 93 is turned off. Then, the second electric telescopic rod 95 starts, driving the clamp 98 to move, using the clamp 98 to fix the inner wall of the tooth, ensuring the patient's oral cavity... The teeth inside the cavity can be tightly connected to the mounting plate 6, facilitating gastroscopy. Then, the second bidirectional electric telescopic rod 75 is activated, moving the clamping plate 73, which in turn moves the corresponding mounting plate 6, opening the two mounting plates 6 and thus opening the patient's mouth. As the distance between the two mounting plates 6 increases, the first motor 74 drives the round rod 72 to rotate, which in turn uses the connecting plate 71 to rotate the corresponding mounting plate 6. As the distance between the two mounting plates 6 increases, the tilt angle of the fixing plate 811 inside the mounting plate 6 always matches the tilt angle of the corresponding teeth, facilitating tooth fixation and thus expanding the oral cavity. After the gastroscopy is completed, the doctor loosens the bolt 99, removing it from the mounting base 91. Remove the baffle 911 from the mounting plate 96. The baffle 911 no longer obstructs the splint 98. The dentist can then directly pull the splint 98 out of the T-shaped groove 97 on the side wall of the mounting block 96. This facilitates quick disassembly and cleaning of the splint 98 after use. When oral cavity expansion is needed, the tilt angle of the occlusal groove 812 in the fixing plate 811 can be adjusted according to the tilt angle of the patient's teeth. This ensures that the patient's teeth are fully engaged in the occlusal groove 812, resulting in even force distribution. Furthermore, the tilt angle of the splint 98 can be adjusted according to the tilt angle of the side walls of the patient's teeth, facilitating the fixation of the inner walls of the teeth and ensuring a tight connection between the patient's teeth and the mounting plate 6.This design facilitates gastroscopy on patients. Furthermore, after the mounting plate 6 is inserted into the patient's oral cavity, the distance between the two mounting plates 6 continuously increases, expanding the oral cavity. This avoids the difficulty of inserting a large oral dilator with a central hole for moving the gastroscope tube, which would otherwise be difficult. During the expansion process, the angle of the mounting plates 6 is continuously adjusted using the connecting plate 71, ensuring that the occlusal groove 812 within the fixing plate 811 always aligns with the corresponding teeth. This prevents teeth from shifting out of the fixing plate 811 during expansion, significantly improving the efficiency and reliability of oral cavity expansion.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A gastroscopy oral cavity dilator, comprising a base plate (1), characterized in that, A support rod (2) is fixedly connected to the top side wall of the base plate (1). A first bidirectional electric telescopic rod (3) is fixedly connected to one end of the support rod (2). A support plate (4) is fixedly connected to the telescopic end of the first bidirectional electric telescopic rod (3). A side plate (5) is abutted to the side wall of the support plate (4). A mounting plate (6) is fixedly connected to the side wall of the two side plates (5). An adjustment component (7) for adjusting the tilt angle of the mounting plate (6) according to the size of the mouth opening and closing is fixedly connected to the side wall of the two mounting plates (6). A tooth support component (8) for making it easier for the teeth to bite is fixedly connected to the inner wall of the mounting plate (6). A tooth fixing component (9) for fixing the inner and outer walls of the teeth is provided on one side of the tooth support component (8). The adjustment assembly (7) includes two sets of connecting plates (71) symmetrically fixedly connected to the side walls of two mounting plates (6) at opposite ends. Each set of connecting plates (71) has two plates. A round rod (72) is fixedly connected to the side wall of each connecting plate (71). The two ends of the round rod (72) are rotatably connected to the same clamping plate (73). A first motor (74) is fixedly connected to the side wall of each clamping plate (73). The output end of the first motor (74) passes through the side wall of the corresponding clamping plate (73) and is fixedly connected to one end of the round rod (72). The side wall of each set of clamping plates (73) at opposite ends is provided with the same second bidirectional electric telescopic rod (75). The telescopic ends of the second bidirectional electric telescopic rod (75) are fixedly connected to the side wall of the corresponding clamping plate (73). The tooth support assembly (8) includes a slide rail (81) fixedly connected to the inner wall of the mounting plate (6), a slide plate (82) slidably connected to the top side wall of the slide rail (81), a stop block (83) fixedly connected to the inner wall of the mounting plate (6), an annular opening (84) for the slide plate (82) to move on the top side wall of the stop block (83), and a second motor (85) fixedly connected to the inner wall of the slide plate (82). The output end of the second motor (85) is fixedly connected to the first electric telescopic rod (86), and the telescopic end of the first electric telescopic rod (86) is fixedly connected to the locking block (87). The inner wall of the locking block (87) is rotatably connected to the rotating rod (88), and the side wall of the locking block (87) is fixedly connected to the third motor (89). The output end of the third motor (89) passes through the side wall of the locking block (87) and is fixedly connected to one end of the rotating rod (88). The rotating rod (88) has a connecting block (810) fixedly connected to its rod wall. The top side wall of the connecting block (810) is fixedly connected to a fixing plate (811). The bottom inner wall of the fixing plate (811) is provided with a biting groove (812). Biting rubber (813) is fixedly connected inside the biting groove (812). The dental fixation assembly (9) includes a first groove (91) opened on the inner wall of both ends of the fixation plate (811), and a second groove (92) is opened on the inner wall of each of the first grooves (91). A fourth motor (93) is fixedly connected to the inner wall of each of the second grooves (92), and a side rod (94) is fixedly connected to the output end of each of the fourth motors (93). One end of the side rod (94) is rotatably connected to the inner wall of the first groove (91). The side rod (94) is fixedly connected to the second electric telescopic rod (95). The telescopic end of the second electric telescopic rod (95) is fixedly connected to the mounting block (96). The side wall of the mounting block (96) is provided with a T-shaped slide groove (97). The T-shaped slide groove (97) is movably connected to a clamping plate (98).

2. The oral cavity dilator for gastroscopy according to claim 1, characterized in that, The mounting block (96) has two symmetrical screw holes on its sidewall, and bolts (99) are rotatably connected to the corresponding screw holes. The outer walls of the bolts (99) are rotatably connected to mounting seats (910). The sidewalls of the two mounting seats (910) are fixedly connected to the same baffle (911) at opposite ends. The sidewall of the baffle (911) abuts against the sidewall of the clamp (98).