Dental tooth filling device

Abstract

The invention discloses a dental tooth filling device, and relates to the field of medical instruments, the dental tooth filling device comprises a grip, a tube body and an injection part, and the two ends of the tube body are fixedly connected with the grip and the injection part respectively; the injection part comprises a frame body and an injection tube rotationally connected with the frame body; an injection head and an ultraviolet lamp are mounted at the upper and lower positions of the injection tube respectively; a rotating mechanism is arranged on the tube body and is used for driving the injection tube to rotate relative to the frame body; a telescopic mechanism is arranged in the injection pipe and is used for driving the injection head to retract into the injection pipe and extend out of the injection pipe respectively when the injection pipe drives the injection head to rotate to the inner side and the outer side of the frame body; the filling and curing processes can be rapidly and alternately completed in the same device, the instrument replacement frequency and the treatment time are remarkably reduced, and the clinical operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a dental tooth filling device. BACKGROUND

[0002] In the process of tooth repair treatment, resin filling is one of the commonly used techniques. The resin material used in root canal treatment is different from the resin material used in other ordinary tooth filling. For example, the resin material used in root canal treatment is more fluid and more affinity to the nerve of the tooth bed. Figure 1 As shown in S1, the S1 part is the main part of the tooth, which is usually exposed outside the gum, and the S2 part is the root part of the tooth, which is wrapped by the gum. The ordinary tooth damage usually refers to the tooth surface damage shown in S3, and a clip is usually used to hold a hard resin material to fill the damaged part during repair. However, the root canal treatment is needed to repair the damage of S4 and S2 parts, and the tooth hole close to the root of the tooth needs to be polished in the tooth, as shown in S4. Figure 9 The space in the tooth hole is small, so the resin material used is usually more fluid and more affinity to the nerve of the tooth bed.

[0003] The traditional operation process requires the dentist to repeatedly alternate between filling resin material and ultraviolet light curing: first, use the injection head to fill the resin material into the tooth hole in layers, and then replace the light curing lamp to make it solidify. This process needs to switch the instruments many times. This alternating operation not only prolongs the treatment time and increases the discomfort of the patient, but also increases the risk of cross contamination due to the frequent in and out of the oral cavity. In addition, due to the small space in the oral cavity, the injection head is not easy to align with the tooth hole when the dentist fills the resin, and the dentist needs to frequently adjust the position to adjust the injection head to the point directly opposite the tooth hole, which will further deepen the discomfort of the patient and the workload of the dentist. SUMMARY

[0004] The purpose of the present application is to provide a dental tooth filling device to solve the problems raised in the background.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a dental tooth filling device, comprising a handle, a tube body and an injection part, the two ends of the tube body are fixedly connected with the handle and the injection part respectively; The injection part comprises a frame and an injection tube rotatably connected with the frame, an injection head and an ultraviolet lamp are installed on the injection tube at upper and lower positions respectively; the injection tube is in communication with the tube body; A rotating mechanism is arranged on the tube body, and the rotating mechanism is used to drive the injection tube to rotate relative to the frame; An extension mechanism is arranged in the injection tube, and the extension mechanism is used to drive the injection head to retract into the injection tube and extend out of the injection tube when the injection tube drives the injection head to rotate to the inside and outside of the frame respectively.

[0006] Preferably, the rotating mechanism comprises a motor fixed at the rear side of the frame, the rear end of the motor output shaft is fixedly connected with a belt pulley, and a belt is sleeved on the belt pulley; an annular belt groove is formed in the surface of the injection pipe below the belt pulley, and the belt is in transmission connection with the belt pulley and the inner wall of the belt groove.

[0007] Preferably, the pipe body is fixedly connected with a protective cover, the motor is located in the protective cover, and the injection pipe is in clearance fit with the protective cover; an opening portion at the rear side of the protective cover is provided with a protective plate I attached to the protective cover.

[0008] Preferably, the protective plate I is provided with a plurality of screws I in threaded connection with the protective cover.

[0009] Preferably, the telescopic mechanism comprises a connecting rod rotationally connected with the bottom side of the injection head, the injection head is in sliding connection with the injection pipe, the other end of the connecting rod is rotationally connected with a sliding rod, the sliding rod is in sliding connection with the inner wall of the injection pipe, the injection pipe is internally provided with a material suction assembly, the material suction assembly is used for sucking the remaining resin material in the injection head into the injection pipe when the injection head is retracted, and the injection pipe is internally provided with a driving assembly, the driving assembly is used for driving the material suction assembly to operate and driving the sliding rod to slide.

[0010] Preferably, the material suction assembly comprises a piston arranged at the rear side of the sliding rod, the piston is in sealing attachment with the inner wall of the injection pipe, and the piston is fixedly connected with the rear end of the sliding rod.

[0011] Preferably, the driving assembly comprises a protective plate II fixedly connected at the rear end of the injection pipe, a fixed plate is fixedly connected at one end of the inner side of the injection pipe on the protective plate II, a linear driving element is mounted on the fixed plate, and the output shaft of the linear driving element is fixedly connected with the piston.

[0012] Preferably, the protective plate II is provided with a plurality of screws II in threaded connection with the injection pipe, the piston and the sliding rod are in threaded connection through a screw III, and the protective plate II and the fixed plate are in threaded connection through a plurality of screws IV.

[0013] Compared with the prior art, the present application has the following beneficial effects: 1. The present application realizes the automatic switching and positioning of the injection head and the ultraviolet lamp by arranging the rotatable injection pipe and the telescopic mechanism, so that the filling and curing processes are quickly alternately completed in the same device, the number of instrument replacement and the treatment time are significantly reduced, and the clinical operation efficiency is improved.

[0014] 2. The application utilizes the coordinated control of the driving mechanism for rotation and extension action to ensure that the injection head is protected in the retracted state in the tube, avoiding head pollution and blockage, while the integrated design reduces the number of in-mouth instrument entries and exits, reducing the risk of cross-infection and improving patient treatment comfort. Meanwhile, the injection head adopts an extended injection form, which can help dentists quickly determine the injection point by inserting the injection head into the tooth hole, improving injection efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of a tooth; Figure 2 is a schematic diagram of the overall structure of the application Figure 3 is a schematic diagram of the rear view structure of the application; Figure 4 is a schematic diagram of the disassembled structure of the application; Figure 5 is a schematic diagram of the structure of the injection tube in the application; Figure 6 is a schematic diagram of the cross-sectional structure of the injection tube in the application; Figure 7 is a schematic diagram of the disassembled structure of the injection tube in the application; Figure 8 is a schematic diagram of the structure of the frame in the application; Figure 9 is a schematic diagram of the tooth filling process in the application.

[0016] In the drawings, the components represented by each reference numeral are as follows: 1, handle; 2, tube body; 3, frame; 4, injection tube; 5, injection head; 6, ultraviolet lamp; 7, motor; 8, pulley; 9, belt; 10, belt groove; 11, protective cover; 12, protective plate I; 13, screw I; 14, connecting rod; 15, slide rod; 16, piston; 17, protective plate II; 18, fixed plate; 19, linear drive; 20, screw II; 21, screw III; 22, screw IV. DETAILED DESCRIPTION

[0017] Please refer to Figures 1-8 The application provides a technical solution: a dental tooth filling device, comprising a handle 1, a tube body 2, and an injection part, the tube body 2 is fixedly connected with the handle 1 and the injection part at both ends; The injection part comprises a frame 3 and an injection tube 4 rotatably connected with the frame 3, and an injection head 5 and an ultraviolet lamp 6 are installed on the injection tube 4 at upper and lower positions respectively; the injection tube 4 is connected with the tube body 2; A rotating mechanism is provided on the tube body 2, which is used to drive the injection tube 4 to rotate relative to the frame 3; The injection tube 4 is provided with a telescopic mechanism, which is used for driving the injection head 5 to retract into the injection tube 4 and extend out of the injection tube 4 when the injection tube 4 drives the injection head 5 to rotate to the inside and outside positions of the frame body 3 respectively; In use, when filling the tooth, the dentist needs to polish and clean the damaged part of the tooth body to form a clean filling space, which is a deep hole Figure 1 As shown, then the dentist holds the handle 1 to insert the injection part into the hole position of the patient's mouth, and then starts the rotating mechanism to drive the injection tube 4 to rotate by 180 degrees, so that the injection head 5 and the ultraviolet lamp 6 are located at the lower side and the upper side of the injection tube 4 respectively, and the injection head 5 is located opposite to the hole position of the tooth to be filled. At this time, the driving mechanism drives the telescopic mechanism to operate, and the telescopic mechanism drives the injection head 5 to extend out of the injection tube 4. After the dentist controls the injection head 5 to be aligned with and inserted into the filling hole of the tooth through the handle 1, the filling material is quantitatively filled into the tooth hole through the injection head 5 by the external controller.

[0018] After the filling material is filled to a layer, the ultraviolet lamp 6 is needed for curing. The injection head 5 is retracted into the injection tube 4 by starting the telescopic mechanism, and then the injection tube 4 is rotated by 180 degrees by starting the rotating mechanism to reset. At this time, the ultraviolet lamp 6 is located at the position of irradiating the filling material, and the filling material can be quickly cured by the irradiation of the ultraviolet lamp 6. The filling of the tooth can be effectively completed by repeatedly filling and curing. Compared with the traditional method that the filling device is removed from the patient's mouth by the dentist after the tooth is filled, and the ultraviolet lamp 6 is inserted into the patient's mouth for curing, the device can effectively simplify the filling operation of the dentist and improve the efficiency of tooth filling. By setting the injection head 5 to extend out of the injection tube 4 during injection, the injection head 5 can be inserted into the tooth hole, so that the dentist can quickly align and determine the injection position in the narrow oral environment, and the resin can be prevented from being injected into other positions.

[0019] The frame body 3 can also protect the injection head 5, which can effectively prevent the injection head 5 from being contaminated and blocked.

[0020] Referring to Figures 5-7 As a further scheme of the present application, the rotating mechanism comprises a motor 7 fixed at the rear side of the frame body 3, the rear end of the output shaft of the motor 7 is fixedly connected with a belt pulley 8, and a belt 9 is sleeved on the belt pulley 8; an annular belt groove 9 is formed on the surface of the injection tube 4 at the lower side of the belt pulley 8, and the belt 9 is in transmission connection with the belt pulley 8 and the inner wall of the belt groove 9; The pipe body 2 is fixedly connected with a protective cover 11, the motor 7 is located in the protective cover 11 and the injection pipe 4 is in clearance fit with the protective cover 11; the rear opening part of the protective cover 11 is provided with a protective plate 1 2 which is attached to the protective cover 1 1; A plurality of screws 1 3 are arranged on the protective plate 1 2, and the screws 1 3 are in threaded connection with the protective cover 1 1; When starting to fill the tooth hole with resin, the motor 7 is started to drive the belt pulley 8 to rotate, and the belt pulley 8 drives the injection pipe 4 to rotate through the belt 9, and the motor 7 is stopped when the injection pipe 4 rotates half a circle; Due to the relatively hot and humid environment in the oral cavity and the heavy bacteria, the micro motor 7 is easy to be damaged in use and has high requirements on the environment, and the protective cover 1 1 and the protective plate 1 2 can protect the motor 7; the screws 1 3 can quickly disassemble and assemble the protective plate 1 2, so that the motor 7 can be maintained and replaced conveniently.

[0021] Referring to Figures 6-7 As a further scheme of the present application, the telescopic mechanism comprises a connecting rod 14 rotatably connected with the bottom side part of the injection head 5, and the injection head 5 is in sliding connection with the injection pipe 4; the other end of the connecting rod 14 is rotatably connected with a sliding rod 15, and the sliding rod 15 is in sliding connection with the inner wall of the injection pipe 4; a material suction assembly is arranged in the injection pipe 4, and the material suction assembly is used to suck the remaining resin material in the injection head 5 into the injection pipe 4 when the injection head 5 is retracted; a driving assembly is arranged in the injection pipe 4, and the driving assembly is used to drive the material suction assembly to operate and drive the sliding rod 15 to slide; When the motor 7 drives the injection pipe 4 to rotate half a circle to the position below the frame body 3, the motor 7 is stopped and the driving assembly is started, the sliding rod 15 is pushed to slide forward in the injection pipe 4 through the driving assembly, and the injection head 5 is driven to slide downward relative to the injection pipe 4 through the connecting rod 14 when the sliding rod 15 slides forward; when the sliding rod 15 slides to the most forward position, the injection head 5 is extended to the maximum extent; After the injection head 5 is extended out of the injection pipe 4, the dentist can control the injection head 5 to slowly explore into the tooth hole, and then the filling of the tooth hole with resin can be started; When the tooth hole is filled with a layer of resin, the driving assembly is started to drive the injection head 5 to retract into the injection pipe 4, and the injection head 5 is automatically removed from the tooth hole when it retracts; since a certain amount of resin material is reserved in the injection head 5, in order to prevent the resin material reserved in the injection head 5 from being squeezed out when the injection head 5 retracts, the material suction assembly is started to suck the resin material in the injection pipe 4 when the injection head 5 retracts, so that the resin in the injection head 5 can be effectively prevented from being squeezed out.

[0022] Referring to Figure 6As a further scheme of the present application, the suction component comprises a piston 16 arranged at the rear side of the slide rod 15, the piston 16 is in sealing contact with the inner wall of the injection pipe 4, and the piston 16 is fixedly connected with the rear end of the slide rod 15; The driving component comprises a protection plate two 17 fixedly connected with the rear end of the injection pipe 4, a fixed plate 18 fixedly connected with one end of the injection pipe 4 at the inner side of the protection plate two 17, and a linear driving part 19 installed on the fixed plate 18, wherein the output shaft of the linear driving part 19 is fixedly connected with the piston 16; During operation, the piston 16 can be driven to move linearly in the injection pipe 4 by starting the linear driving part 19; when it is needed to drive the injection head 5 to extend outward, the piston 16 is driven to move forward by starting the linear driving part 19, and the piston 16 can drive the slide rod 15 to move forward, thereby driving the injection head 5 to extend out of the injection pipe 4; When the piston 16 is driven to move backward, the injection head 5 can be driven to retract into the injection pipe 4, and when the injection head 5 retracts, the piston 16 can expand the internal space of the injection pipe 4 and suck the resin material in the injection pipe 4 backward, so that the resin material reserved in the injection head 5 is sucked into the injection pipe 4, thereby effectively preventing the resin material reserved in the injection head 5 from being squeezed out when the injection head 5 retracts.

[0023] Referring to Figures 6-7 As a further scheme of the present application, the protection plate two 17 is provided with a plurality of screws two 20, the screws two 20 are in threaded connection with the injection pipe 4; the piston 16 and the slide rod 15 are in threaded connection through a screw three 21; and the protection plate two 17 and the fixed plate 18 are in threaded connection through a plurality of screws four 22. During operation, when the equipment is not used for a long time or the resin material needs to be replaced, the interior of the injection pipe 4 needs to be cleaned, the fixed plate 18 and the protection plate two 17 can be separated by unscrewing the plurality of screws four 22, then the plurality of screws two 20 can be unscrewed, at this time, the protection plate two 17 can be disassembled; after the protection plate two 17 is disassembled, the piston 16 can be separated from the slide rod 15 by unscrewing the screw three 21 on the piston 16, at this time, the piston 16 can be taken out of the injection pipe 4, and after the piston 16 is taken out, the interior of the injection pipe 4 can be cleaned.

Claims

1. A dental dental filling device comprising a handle (1), a tube (2) and an injection part, characterized in that: The pipe body (2) is fixedly connected with the handle (1) and the injection part at both ends respectively; The injection part comprises a frame (3) and an injection pipe (4) rotatably connected with the frame (3), and the injection pipe (4) is provided with an injection head (5) and an ultraviolet lamp (6) at upper and lower positions respectively; the injection pipe (4) is connected with the pipe body (2); A rotating mechanism is arranged on the pipe body (2), and the rotating mechanism is used for driving the injection pipe (4) to rotate relative to the frame (3); An extension mechanism is arranged in the injection pipe (4), and the extension mechanism is used for driving the injection head (5) to retract into the injection pipe (4) and extend out of the injection pipe (4) when the injection pipe (4) drives the injection head (5) to rotate to the inside and outside positions of the frame (3) respectively.

2. A dental restorative device according to claim 1, wherein: The rotating mechanism comprises a motor (7) fixed at a rear position of the frame (3), a belt pulley (8) fixedly connected to a rear end of an output shaft of the motor (7), and a belt (9) sleeved on the belt pulley (8); a belt groove (10) is formed in an annular shape on a surface of the injection pipe (4) at a lower position of the belt pulley (8), and the belt (9) is in transmission connection with the belt pulley (8) and an inner wall of the belt groove (10) simultaneously.

3. The dental dental restorative device of claim 1, wherein: A protective cover (11) is fixedly connected to the pipe body (2), the motor (7) is located in the protective cover (11), and the injection pipe (4) is in gap cooperation with the protective cover (11); a protective plate (12) is arranged at a rear opening portion of the protective cover (11) and is attached to the protective cover (11).

4. A dental restorative device according to claim 3, wherein: A plurality of screws (13) are arranged on the protective plate (12) and are in threaded connection with the protective cover (11).

5. The dental dental restorative device of claim 1, wherein: The extension mechanism comprises a connecting rod (14) rotatably connected to a bottom side portion of the injection head (5), the injection head (5) is in sliding connection with the injection pipe (4), the other end of the connecting rod (14) is rotatably connected with a sliding rod (15), the sliding rod (15) is in sliding connection with an inner wall of the injection pipe (4), a material suction assembly is arranged in the injection pipe (4), the material suction assembly is used for sucking the remaining resin material in the injection head (5) into the injection pipe (4) when the injection head (5) is retracted, and a driving assembly is arranged in the injection pipe (4) and is used for driving the material suction assembly to operate and driving the sliding rod (15) to slide.

6. A dental restorative device according to claim 5, wherein: The material suction assembly comprises a piston (16) arranged at a rear side of the sliding rod (15), the piston (16) is in sealing attachment with the inner wall of the injection pipe (4), and the piston (16) is fixedly connected with the rear end of the sliding rod (15).

7. A dental restorative device according to claim 6, wherein: The driving assembly comprises a protective plate (17) fixedly connected to the rear end of the injection pipe (4), one end of the protective plate (17) located at the inside of the injection pipe (4) is fixedly connected with a fixed plate (18), the fixed plate (18) is provided with a linear drive (19), and an output shaft of the linear drive (19) is fixedly connected with the piston (16).

8. A dental restorative device according to claim 7, wherein: The second protection plate (17) is provided with a plurality of second screws (20) which are in threaded connection with the injection pipe (4); the piston (16) and the slide rod (15) are in threaded connection through a third screw (21); the second protection plate (17) and the fixed plate (18) are in threaded connection through a plurality of fourth screws (22).

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