Multi-waterproof ultrasonic handle

Abstract

The utility model relates to the technical field of tooth cleaning equipment, in particular to a multi-waterproof ultrasonic handle which comprises a handle shell, a transducer, a fixing piece, a connecting piece, a silica gel piece, an internal waterway, a first sealing ring, a second sealing ring, a third sealing ring, a fourth sealing ring and a sealing belt, the handle shell is used for protecting the transducer installed in the handle shell, the transducer is fixed in the handle shell through the fixing piece, the silica gel piece fixes the two sides of a ceramic piece on the transducer, vibration is stable, the connecting piece is connected with the handle shell, and an internal water path is led out. The ultrasonic handle performs watertight sealing through the internal waterway, the first sealing ring, the second sealing ring, the third sealing ring, the fourth sealing ring and the sealing belt, the service life of the handle is greatly prolonged, the reliability is greatly improved, and the problems that an existing ultrasonic handle is poor in waterproof effect, water flow easily enters a ceramic piece in the handle, and the service life of the handle is affected are solved. And the handle is damaged.

Description

Technical Field

[0001] This utility model relates to the field of dental cleaning equipment technology, and in particular to a multi-layer waterproof ultrasonic handpiece. Background Technology

[0002] Ultrasonic scaling technology and dental ultrasonic bone scalpels have been widely used in the field of oral health care. Ultrasonic scaling machines can effectively remove supragingival and subgingival calculus, while dental ultrasonic bone scalpels can quickly perform dental surgeries such as alveolar bone cutting. The handles of the above devices need to be ultrasonically cleaned and sterilized with high-temperature steam.

[0003] Currently, most ultrasonic handpieces on the market are piezoelectric, consisting of four or six piezoelectric ceramic discs connected in parallel. One end uses a stainless steel counterweight as the base, while the other end uses a titanium alloy amplitude transformer to amplify the vibration. The amplitude transformer and the counterweight are connected by threads, applying a certain torque to lock the piezoelectric ceramic discs, ensuring they are always under pressure. During operation, the piezoelectric ceramic discs convert high-frequency alternating voltage signals into ultrasonic vibrations. The vibrations of the four or six ceramic discs connected in parallel are superimposed and amplified, effectively reducing the pressure on a single ceramic disc and extending its lifespan. The vibrations are then amplified by the amplitude transformer and transmitted to the tip for scaling or osteotomy. During scaling or osteotomy, water must be used to cool the operating area to reduce the temperature of the operating area (including the tip) and prevent high-temperature damage to the tooth and gum tissue. This also cools the handpiece to prevent high temperatures from affecting the ceramic disc parameters and shortening its lifespan. During this process, water may leak into the ceramic discs inside the handpiece. The handle and tip must be cleaned and sterilized before and after use to avoid cross-infection among patients. Cleaning is usually done with an ultrasonic cleaner, and sterilization is usually done with high-temperature steam at 134°C and 2.2 bar for several minutes.

[0004] However, during the cooling and cleaning processes mentioned above, water can easily enter the ceramic plates inside the handle, causing a short circuit between the positive and negative terminals or changes in the performance parameters of the ceramic plates, thereby damaging the handle. Utility Model Content

[0005] The purpose of this invention is to provide a multi-layered waterproof ultrasonic handpiece, which aims to solve the problem that existing ultrasonic handpieces have poor waterproof performance and water can easily enter the ceramic plate inside the handpiece, causing damage to the handpiece.

[0006] To achieve the above objectives, this utility model provides a multi-layer waterproof ultrasonic handpiece, including a handpiece shell, a transducer, a fixing member, a connecting member, a silicone component, an internal water channel, a first sealing ring, a second sealing ring, a third sealing ring, a fourth sealing ring, and a sealing strip; the transducer is disposed inside the handpiece shell, the fixing member is disposed on one side of the transducer, the connecting member is disposed on the side of the handpiece shell near the fixing member, the silicone component is disposed between the handpiece shell and the transducer, the internal water channel communicates with the transducer and passes through the fixing member and the connecting member, the first sealing ring is disposed on the side of the transducer away from the fixing member, the second and third sealing rings are respectively disposed on one side of the fixing member, the fourth sealing ring is disposed between the fixing member and the handpiece shell, and the sealing strip is disposed between the handpiece shell and the connecting member.

[0007] The transducer includes a counterweight, an amplitude transformer, a ceramic plate, a copper electrode plate, a high-temperature resistant wire, and a silicone tube. The silicone tube is located outside the amplitude transformer, the ceramic plate is located on the side of the silicone tube away from the amplitude transformer, the copper electrode plate is located on one side of the ceramic plate, the counterweight is located on the side of the ceramic plate away from the amplitude transformer, and the high-temperature resistant wire is connected to the copper electrode plate and located outside the counterweight.

[0008] The number of ceramic pieces is even, and they are divided into three types: two pieces, four pieces, and six pieces.

[0009] The fastener has a through hole.

[0010] The silicone part has moderate hardness, with a Shore hardness of 40-60 degrees, and is under compression.

[0011] This utility model discloses a multi-layered waterproof ultrasonic handpiece. The handpiece shell protects the transducer installed inside. A fixing member secures the transducer within the handpiece shell. A silicone component fixes both sides of the ceramic plate on the transducer, ensuring stable vibration. A connector connects to the handpiece shell, leading out the internal water channel. A high-temperature resistant wire is welded to a conductive copper rod on the connector. After welding, the weld joint is completely wrapped with silicone to prevent short circuit between positive and negative terminals in case of leakage. The handpiece shell has an annular groove in which a sealing strip is placed, pressing against the inner wall of the connector for sealing. The handpiece shell also has an annular protrusion that engages with the groove on the inner wall of the connector for axial fixation. Additionally, a fixing groove on the handpiece shell is circumferentially fixed to a protrusion on the connector. This ultrasonic handpiece achieves water sealing through multiple pathways—the internal water channel, the first sealing ring, the second sealing ring, the third sealing ring, the fourth sealing ring, and the sealing strip—significantly extending the handpiece's service life and greatly improving reliability. It solves the problem of poor waterproofing in existing ultrasonic handpieces, where water easily enters the internal ceramic plate, causing damage to the handpiece. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the transducer assembly of a multi-waterproof ultrasonic handpiece according to this utility model.

[0014] Figure 2 This is a schematic diagram of the assembly of the transducer and handle shell of a multi-waterproof ultrasonic handpiece according to this utility model.

[0015] Figure 3 This is a schematic diagram of the handle shell of a multi-waterproof ultrasonic handpiece according to this utility model.

[0016] Figure 4 This is a schematic diagram of a fixing component for a multi-waterproof ultrasonic handle according to this utility model.

[0017] Figure 5 This is a schematic diagram of a connector for a multi-layer waterproof ultrasonic handle according to this utility model.

[0018] In the diagram: 10-Handle housing, 11-Stepped through hole, 12-Annular groove, 13-Annular groove, 14-Annular protrusion, 15-Fixing groove, 20-Transducer, 21-Counterweight, 22-Amplitude rod, 23-Ceramic plate, 24-Copper electrode plate, 25-High temperature resistant wire, 26-Silicone tube, 30-Fixing component, 31-First annular groove, 32-First stepped shaft, 33-Annular protrusion, 34-Second annular groove, 35-Through hole, 36-Second stepped shaft, 40-Connector, 41-Groove, 42-Boss, 43-Third stepped shaft, 44-Conductive copper rod, 50-Silicone component, 60-Internal water channel, 70-First sealing ring, 71-Second sealing ring, 72-Third sealing ring, 73-Fourth sealing ring, 74-Sealing strip. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] Please see Figures 1 to 5 This utility model provides a multi-layer waterproof ultrasonic handpiece, including a handpiece shell 10, a transducer 20, a fixing member 30, a connecting member 40, a silicone part 50, an internal water channel 60, a first sealing ring 70, a second sealing ring 71, a third sealing ring 72, a fourth sealing ring 73, and a sealing strip 74; the transducer 20 is disposed inside the handpiece shell 10, the fixing member 30 is disposed on one side of the transducer 20, the connecting member 40 is disposed on the side of the handpiece shell 10 near the fixing member 30, and the silicone part 50 is disposed on the... Between the handle housing 10 and the transducer 20, the internal water passage 60 communicates with the transducer 20 and passes through the fixing member 30 and the connecting member 40. The first sealing ring 70 is disposed on the side of the transducer 20 away from the fixing member 30. The second sealing ring 71 and the third sealing ring 72 are respectively disposed on one side of the fixing member 30. The fourth sealing ring 73 is disposed between the fixing member 30 and the handle housing 10. The sealing strip 74 is disposed between the handle housing 10 and the connecting member 40.

[0021] In this embodiment, the handle housing 10 protects the transducer 20 installed inside. The fixing member 30 fixes the transducer 20 inside the handle housing 10. The silicone part 50 fixes both sides of the ceramic plate 23 on the transducer 20, ensuring stable vibration. The connector 40 connects to the handle housing 10 and leads out the internal water passage 60. The high-temperature resistant wire 25 is welded to the conductive copper rod 44 on the connector 40. After welding, the solder joint is completely wrapped with silicone to prevent short circuit between the positive and negative poles in case of leakage. The handle housing 10 has an annular groove 13, in which the sealing strip 74 is placed and connected to the connector. The inner wall of the connector 40 is squeezed and sealed. The handle housing 10 has an annular protrusion 14 that engages with the groove 41 on the inner wall of the connector 40 for axial fixation. In addition, the fixing groove 15 on the handle housing 10 is circumferentially fixed with the boss 42 on the connector 40. The ultrasonic handle is water-sealed through multiple means, including the internal water channel 60, the first sealing ring 70, the second sealing ring 71, the third sealing ring 72, the fourth sealing ring 73, and the sealing strip 74. This significantly extends the service life of the handle and greatly improves its reliability. It solves the problem that the existing ultrasonic handles have poor waterproof performance and water can easily enter the ceramic plate inside the handle, causing damage to the handle.

[0022] Furthermore, the transducer 20 includes a counterweight 21, an amplitude transformer 22, a ceramic plate 23, a copper electrode plate 24, a high-temperature resistant wire 25, and a silicone tube 26. The silicone tube 26 is disposed outside the amplitude transformer 22, the ceramic plate 23 is disposed on the side of the silicone tube 26 away from the amplitude transformer 22, the copper electrode plate 24 is disposed on the side of the ceramic plate 23, the counterweight 21 is disposed on the side of the ceramic plate 23 away from the amplitude transformer 22, and the high-temperature resistant wire 25 is connected to the copper electrode plate 24 and is located outside the counterweight 21.

[0023] In this embodiment, the transducer 20 has a counterweight 21 at one end and an amplitude transformer 22 at the other end, with ceramic plates 23 in the middle. Copper electrode plates 24 are located between the ceramic plates 23. The positive terminals of the copper electrode plates 24 are connected to each other and the negative terminals are connected to each other via high-temperature resistant wires 25, thus completing the parallel connection of the ceramic plates 23. The amplitude transformer 22 or the counterweight 21 passes through the ceramic plates 23, applying a preload force to the ceramic plates 23 with a certain torque to keep the ceramic plates 23 under pressure. This torque ranges from 2 N*m to 5 N*m, preventing the copper electrode plates 24 from being compressed. The positive and negative electrodes are short-circuited. The silicone tube 26 is provided to prevent the positive and negative electrodes of the ceramic plate 23 from short-circuiting due to contact between the copper electrode plate 24 and the counterweight 21. The connection between the amplitude rod 22 and the counterweight 21 is sealed by the first sealing ring 70. The amplitude rod 22 has a regular polygonal structure and cooperates with the regular polygonal through hole in the handle housing 10 to prevent the transducer 20 from rotating when the tip is installed or removed. The silicone part 50 and the fixing part 30 are fixedly supported in the stepped through hole 11 inside the handle housing 10. The two support points are located at both ends of the ceramic plate 23 of the vibration source, making the vibration more stable.

[0024] Furthermore, the number of ceramic pieces 23 is even, and they are divided into three types: two pieces, four pieces, and six pieces.

[0025] Furthermore, the fastener 30 has a through hole 35.

[0026] In this embodiment, the fixing member 30 has 2-5 through holes 35. These through holes 35 allow the high-temperature resistant wire 25 of the transducer 20 or lamp to pass through. Furthermore, a certain amount of silicone can be injected through the through holes 35 to further seal and waterproof the ceramic sheet 23 by filling the gap between the exterior of the ceramic sheet 23 and the inner wall of the handle housing 10. The through holes 35 are then filled with silicone for sealing.

[0027] The fixing member 30 is axially supported by the second sealing ring 71 and the counterweight block 21, serving as a fixing seal. The fixing member 30 has a first annular groove 31, and the first stepped shaft 32 protruding from the fixing member 30 is sealed to the internal water passage 60 by the third sealing ring 72, which also provides support. In addition, the outer ring of the fixing member 30 has an annular protrusion 33 that fits into an annular groove 12 on the inner wall of the handle housing 10 to fix the fixing member 30. The outer ring of the fixing member 30 has a second annular groove 34, in which the fourth sealing ring 73 is installed to seal the gap between the fixing member 30 and the handle housing 10. The two high-temperature resistant wires 25 are connected to the connector 40 at the tail end through the through hole 35.

[0028] The second stepped shaft 36 on the fixing member 30 and the third stepped shaft 43 on the connecting member 40 are connected by the silicone tube 26. The third stepped shaft 43 is recessed in the middle, which facilitates the fixing and sealing of the silicone tube 26.

[0029] Furthermore, the silicone part 50 has moderate hardness, with a Shore hardness of 40-60 degrees, and is under a certain compression state.

[0030] In this embodiment, the silicone part 50 has moderate hardness, with a Shore hardness of 40-60 degrees. It is located on the side of the large diameter of the amplitude rod 22 and the inner wall of the handle housing 10, and is under a certain compression state, so as to provide support and external waterproofing.

[0031] The above-disclosed embodiments are merely preferred embodiments of a multi-waterproof ultrasonic handpiece of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments, and equivalent variations made in accordance with the claims of this application, still fall within the scope of this application.

Claims

1. A multi-layered waterproof ultrasonic handpiece, characterized in that... ； Includes handle housing, transducer, fixing parts, connectors, silicone parts, internal water channels, first sealing ring, second sealing ring, third sealing ring, fourth sealing ring and sealing strip; The transducer is disposed inside the handle housing. The fixing member is disposed on one side of the transducer. The connecting member is disposed on the side of the handle housing near the fixing member. The silicone part is disposed between the handle housing and the transducer. The internal water channel communicates with the transducer and passes through the fixing member and the connecting member. The first sealing ring is disposed on the side of the transducer away from the fixing member. The second sealing ring and the third sealing ring are respectively disposed on one side of the fixing member. The fourth sealing ring is disposed between the fixing member and the handle housing. The sealing strip is disposed between the handle housing and the connecting member.

2. The multi-waterproof ultrasonic handpiece as described in claim 1, characterized in that... ； The transducer includes a counterweight, an amplitude transformer, a ceramic plate, a copper electrode plate, a high-temperature resistant wire, and a silicone tube. The silicone tube is located outside the amplitude transformer, the ceramic plate is located on the side of the silicone tube away from the amplitude transformer, the copper electrode plate is located on one side of the ceramic plate, the counterweight is located on the side of the ceramic plate away from the amplitude transformer, and the high-temperature resistant wire is connected to the copper electrode plate and located outside the counterweight.

3. The multi-waterproof ultrasonic handpiece as described in claim 2, characterized in that... ； The number of ceramic pieces is even, and they are divided into three types: two pieces, four pieces, and six pieces.

4. The multi-waterproof ultrasonic handpiece as described in claim 1, characterized in that... ； The fastener has a through hole.

5. The multi-waterproof ultrasonic handpiece as described in claim 1, characterized in that... ； The silicone part has moderate hardness, with a Shore hardness of 40-60 degrees, and is under compression.

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