A root canal irrigator

Abstract

The application relates to the field of root canal washing equipment, in particular to a root canal washing instrument which comprises a shell, a driving assembly and an eccentric rotor, the driving assembly is assembled in the shell, the output end of the driving assembly is connected with the eccentric rotor, an eccentric hole is arranged at the end of the eccentric rotor away from the driving assembly, an eccentric rod is inserted into the eccentric hole, the eccentric rod is connected with a swing assembly, the shell is connected with a universal bearing, the universal bearing is connected with the swing assembly, the swing assembly is connected to the shell in a spherical swing mode through the universal bearing, and the end of the swing assembly away from the eccentric rod is connected with a washing needle. The application has the effects of prolonging the service life of the root canal washing instrument and improving the flexibility.

Description

Technical Field

[0001] This application relates to the field of root canal irrigation equipment, and in particular to a root canal irrigation device. Background Technology

[0002] In the field of dental clinical treatment, root canal treatment is the core technology for treating pulpitis and periapical periodontitis. The cleaning procedure after root canal treatment is a key step to ensure the treatment effect and reduce the risk of postoperative infection. This procedure usually requires the use of a root canal cleaning instrument. A special squeegee is used to accurately deliver the cleaning solution into the root canal to remove residual pulp tissue debris, dentin powder and pathogenic bacteria, laying the foundation for subsequent root canal filling.

[0003] Existing dental irrigators include a housing containing a drive assembly that rotates an eccentric rotor. The eccentric rotor has an eccentric hole, causing an eccentric rod within the hole to move as it rotates. A swing assembly is hinged to the inner wall of the housing and connected to the eccentric rod. The swing assembly is fitted with an irrigating needle. The movement of the eccentric rod drives the swing assembly to rotate, causing the irrigating needle to vibrate and clean the teeth. However, most mainstream dental irrigators on the market are made of plastic. Plastic has inherent limitations in its physical properties: firstly, its mechanical strength is low, making it prone to wear and deformation during long-term use with the irrigator and contact with cleaning fluid, leading to a shortened lifespan and frequent replacements, increasing clinical costs; secondly, plastic has poor energy conduction efficiency, resulting in significant energy loss when receiving the drive energy from the irrigator and converting it into irrigating action, directly affecting the irrigating performance of the device.

[0004] Meanwhile, the output end structure of existing dental rinsing equipment is relatively simple, with its agitation direction fixed in one direction. It is difficult to flexibly adjust the agitation trajectory to achieve a comprehensive cleaning effect for different areas within the root canal. Furthermore, due to the limited deformation capacity of the plastic material and structural design defects, the vibration amplitude of the output end is generally small, which cannot generate sufficient vibrational impact force to peel off stubborn debris and bacterial biofilms attached to the root canal wall. This results in incomplete cleaning, which may lead to postoperative infection recurrence after root canal treatment and affect the success rate of treatment. Utility Model Content

[0005] In order to improve the service life and flexibility of root canal irrigation instruments, this application provides a root canal irrigation instrument.

[0006] This application provides a root canal irrigation device, which adopts the following technical solution: A root canal irrigation device includes a housing, a drive assembly, and an eccentric rotor. The drive assembly is assembled inside the housing, and its output end is connected to the eccentric rotor. An eccentric hole is provided at the end of the eccentric rotor away from the drive assembly, and an eccentric rod is inserted into the eccentric hole. The eccentric rod is connected to a swinging assembly. A universal bearing is connected to the housing, and the universal bearing is connected to the swinging assembly. The swinging assembly is spherically swinging and connected to the housing through the universal bearing. An irrigation needle is connected to the end of the swinging assembly away from the eccentric rod.

[0007] By adopting the above technical solution, the swing component is connected to the outer shell in a spherical swing manner through a universal bearing, so that the swing component can swing spherically and the oscillating washing needle can swing spherically, realizing multi-directional vibration of the oscillating washing needle, expanding the cleaning coverage area, improving the cleaning effect, and increasing the vibration amplitude, which can effectively remove stubborn debris and bacterial biofilm, and reduce the risk of postoperative infection.

[0008] Optionally, the universal bearing includes a fixed part and a rotating part, the fixed part is connected to the housing, the rotating part is spherically rotatably connected to the fixed part, and the swing assembly is connected to the rotating part.

[0009] By adopting the above technical solution, the fixed part of the universal bearing is connected to the outer shell, which plays a stable supporting role. The spherical rotating part is connected to the fixed part, so that the swinging component can flexibly rotate spherically with the rotating part. The swinging component is connected to the rotating part, which in turn drives the oscillating needle to swing spherically, expanding the cleaning coverage of the oscillating needle and making the cleaning more comprehensive. This can effectively solve the problem of incomplete cleaning coverage caused by the single output end structure and fixed agitation direction in the existing technology, and improve the cleaning effect of the root canal oscillator.

[0010] Optionally, the outer casing has an external groove, and a rubber sleeve covers the external groove, with the rubber sleeve located at the universal bearing.

[0011] By adopting the above technical solution, an external groove is opened on the outer shell to facilitate the operation or maintenance of the components inside the groove. A rubber sleeve is covered at the groove and located at the universal bearing. On the one hand, the rubber sleeve can protect the universal bearing and prevent external dust, impurities, etc. from entering and affecting the normal operation of the universal bearing, thereby ensuring the stability of the spherical oscillation of the swing component through the universal bearing. On the other hand, the rubber sleeve can also play a certain role in buffering, reducing the impact of vibration generated during equipment operation on surrounding components, improving the overall stability and reliability of the equipment, and thus helping to improve the cleaning effect and service life of the root canal irrigation instrument.

[0012] Optionally, the rubber sleeve has a swing groove, and the end of the swing assembly away from the eccentric rod is inserted into the swing groove.

[0013] By adopting the above technical solution, the rubber sleeve is opened with a swing groove, and the end of the swing component away from the eccentric rod is inserted into the swing groove, which provides specific activity space and guidance for the swing of the swing component. The swing component swings in the swing groove, making the swing direction more stable and accurate, and can better drive the oscillating cleaning needle to swing, thereby ensuring the stability of the swing amplitude and direction of the oscillating cleaning needle, and further expanding the cleaning coverage of the oscillating cleaning needle.

[0014] Optionally, there is a gap between the wall of the swing groove and the swing assembly.

[0015] By adopting the above technical solution, the swing component is not excessively obstructed by the swing groove wall during the swing process, allowing the swing component to swing more freely. This makes the swing of the rinsing needle connected to the swing component more flexible. As a result, the swing range of the rinsing needle is increased, and the swing amplitude and angle changes are more varied, expanding the cleaning coverage area, improving the cleaning effect on different areas in the root canal, and more effectively removing stubborn debris and bacterial biofilm, reducing the risk of postoperative infection.

[0016] Optionally, the eccentric rod includes a transmission part, a thin rod part, and a mounting part. The transmission part is connected to the thin rod part, and the end of the thin rod part away from the transmission part is connected to the mounting part. The transmission part is inserted into the eccentric hole and is spherically protruding from the outer wall of the thin rod part. The mounting part is connected to the swing assembly.

[0017] By adopting the above technical solution, the transmission part of the eccentric rod is inserted into the eccentric hole. When the drive assembly drives the eccentric rotor to rotate, the eccentric rotor drives the transmission part to move through the eccentric hole. Since the transmission part is spherically protruding from the outer wall of the thin rod, this structure can more flexibly convert the rotation of the eccentric rotor into oscillating motion, and transmit it to the mounting part through the thin rod. The mounting part is connected to the oscillating assembly, thereby driving the oscillating assembly to oscillate, and finally making the washing needle vibrate in multiple directions. This can more effectively convert the rotation of the eccentric rotor into oscillating motion, accurately transmit the power to the oscillating assembly, and make the vibration of the washing needle more stable and efficient.

[0018] Optionally, the swing assembly includes a swing member, a first swing member, and a second swing member. The swing member is connected to a universal bearing, the first swing member is connected to the swing member, and the second swing member is connected to the swing member.

[0019] By adopting the above technical solution, the oscillating component in the oscillating assembly is connected to the universal bearing, which can obtain the spherical oscillation motion transmitted by the universal bearing. The first and second oscillating components are both connected to the oscillating component and move synchronously with the spherical oscillation of the oscillating component, making the movement of the oscillating assembly more flexible and diverse, further expanding the oscillation range and direction of the swishing needle, thereby greatly increasing the cleaning coverage area, effectively improving the cleaning effect in the root canal, and more comprehensively removing residual pulp tissue debris, dentin powder and pathogens in the root canal, thus better reducing the risk of postoperative infection.

[0020] Optionally, the end of the swing assembly away from the eccentric rod is connected to a connecting rod, and the rinsing needle is sleeved on the connecting rod.

[0021] By adopting the above technical solution: the swing component is connected to the rinsing needle through the connecting rod, so that the swing component drives the connecting rod and the rinsing needle to swing spherically, realizing multi-directional vibration of the rinsing needle, expanding the cleaning coverage area, improving the cleaning effect, and increasing the vibration amplitude, which can effectively remove stubborn debris and bacterial biofilm, and reduce the risk of postoperative infection.

[0022] Optionally, the connecting rod includes a guide portion, a fitting portion, and a connecting portion. The guide portion is connected to one end of the fitting portion, and the end of the fitting portion away from the guide portion is connected to one end of the connecting portion. The outer wall of the fitting portion protrudes from the outer wall of the connecting portion.

[0023] By adopting the above technical solution, the guide part of the connecting rod can play a guiding role, which facilitates the operation of installing the rinsing needle and connecting the swing assembly. The outer wall of the fitting part protrudes from the outer wall of the connecting part, so that the fitting part can stably fit the rinsing needle, reducing the possibility of the rinsing needle slipping or shifting during vibration. The connecting part is connected to the swing assembly, which can transmit the swing of the swing assembly to the connecting rod and the rinsing needle fitted in the fitting part, realize the vibration of the rinsing needle, improve the stability and accuracy of the rinsing needle installation, thereby improving the stability and reliability of the rinsing needle operation and enhancing the cleaning effect of the root canal rinsing instrument.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The swing assembly is connected to the outer shell in a spherical swing manner through a universal bearing, which allows the swing assembly to swing spherically. The swinging washing needle swings spherically, realizing multi-directional vibration of the washing needle, expanding the cleaning coverage area, improving the cleaning effect, and increasing the vibration amplitude. This can effectively remove stubborn debris and bacterial biofilm, reducing the risk of postoperative infection. 2. The fixed part of the universal bearing is connected to the outer shell, which plays a stable supporting role. The spherical rotating part is connected to the fixed part, so that the swinging component can flexibly rotate spherically with the rotating part. The swinging component is connected to the rotating part, which in turn drives the oscillating needle to swing spherically, expanding the cleaning coverage of the oscillating needle and making the cleaning more comprehensive. It can effectively solve the problem of incomplete cleaning coverage caused by the single output end structure and fixed agitation direction in the existing technology, and improve the cleaning effect of the root canal oscillator. 3. An external groove is provided on the outer casing to facilitate the operation or maintenance of the internal components. A rubber sleeve is placed over the groove, with the sleeve located at the universal bearing. On the one hand, the rubber sleeve protects the universal bearing, preventing external dust and impurities from entering and affecting its normal operation, thus ensuring the stability of the spherical oscillation of the swing assembly through the universal bearing. On the other hand, the rubber sleeve also provides a certain degree of cushioning, reducing the impact of vibrations generated during equipment operation on surrounding components, improving the overall stability and reliability of the equipment, thereby helping to improve the cleaning effect and service life of the root canal irrigation instrument. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0026] Figure 2 This is a half-section of the overall structure of Embodiment 1 of this application.

[0027] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0028] Figure 4 This is a half-section of the overall structure of Embodiment 2 of this application.

[0029] Figure 5 This is a half-section of the overall structure of Embodiment 3 of this application.

[0030] Explanation of reference numerals in the attached figures: 1. Housing; 2. Drive assembly; 3. Eccentric rotor; 31. Eccentric hole; 4. Eccentric rod; 41. Transmission part; 42. Thin rod part; 43. Mounting part; 5. Swing assembly; 51. Swinging component; 52. First swing component; 53. Second swing component; 6. Universal bearing; 61. Fixing part; 62. Rotating part; 7. Connecting rod; 71. Guide part; 72. Fitting part; 73. Connecting part; 8. Washing needle; 9. Rubber sleeve. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0032] This application discloses a root canal irrigation device.

[0033] Example 1 Reference Figure 1 and Figure 2 A root canal irrigation device includes a housing 1, a drive assembly 2, an eccentric rotor 3, an eccentric rod 4, a swing assembly 5, a universal bearing 6, and a connecting rod 7. The drive assembly 2 is assembled inside the housing 1, and its output end is connected to a transmission assembly. The output end of the transmission assembly is fixedly connected to the eccentric rotor 3. An eccentric hole 31 is formed at the end of the eccentric rotor 3 furthest from the drive assembly 2. An eccentric rod 4 is inserted into the eccentric hole 31, and a gap exists between the eccentric rod 4 and the eccentric hole 31. The position of the eccentric hole 31 is offset from the central axis of the eccentric rotor 3. When the eccentric rotor 3 rotates under the drive of the transmission assembly 2, the eccentric hole 31 performs a circular motion, thereby driving the inserted rod 4... The eccentric rod 4 moves, and the wall of the eccentric hole 31 pushes the eccentric rod 4. The end of the eccentric rod 4 away from the eccentric hole 31 is fixedly connected to the swing assembly 5. The inner wall of the outer shell 1 is fixedly connected to the universal bearing 6. The universal bearing 6 is fixedly connected to the swing assembly 5. The swing assembly 5 is spherically swinging connected to the outer shell 1 through the universal bearing 6. The end of the swing assembly 5 away from the eccentric rod 4 is fixedly connected to the connecting rod 7. The connecting rod 7 is fitted with a washing needle 8 made of metal, so that the transmission group of the drive assembly 2 drives the eccentric rotor 3 to rotate, and then drives the swing assembly 5 to spherically swing through the eccentric rod 4, so that the washing needle 8 can achieve multi-directional vibration, which greatly improves the cleaning effect.

[0034] Reference Figure 2 and Figure 3 The eccentric rod 4 includes a transmission part 41, a thin rod part 42, and a mounting part 43. Preferably, the transmission part 41 is spherical, allowing it to rotate and move flexibly within the eccentric hole 31. The transmission part 41 is fixedly connected to one end of the thin rod part 42. The transmission part 41 is spherically protruding from the outer wall of the thin rod part 42 to reduce the friction between the transmission part 41 and the eccentric hole 31 and improve transmission efficiency. The end of the thin rod part 42 away from the transmission part 41 is fixedly connected to the mounting part 43. The thin rod part 42 serves to connect the transmission part 41 and the mounting part 43. Its diameter is relatively small to reduce the weight of the entire eccentric rod 4. The mounting part 43 is fixedly connected to the swing assembly 5.

[0035] The universal bearing 6 includes a fixed part 61 and a rotating part 62. The fixed part 61 is fixedly connected to the inner wall of the housing 1. The rotating part 62 is spherically rotatably connected to the fixed part 61, so that the rotating part 62 can perform omnidirectional spherical rotation on the fixed part 61. The swing assembly 5 is fixedly connected to the rotating part 62. The rotating part 62 can provide a flexible rotation fulcrum for the swing assembly 5, so that the swing assembly 5 can achieve spherical swing.

[0036] The swing assembly 5 includes a swing member 51, a first swing member 52, and a second swing member 53. The swing member 51 is fixedly connected to the rotating part 62. The first swing member 52 and the second swing member 53 are respectively fixedly connected to the outer wall of the swing member 51, and the first swing member 52 and the second swing member 53 are set at an angle of no more than 90° to form an integral swing structure. The mounting part 43 is fixedly connected to the first swing member 52. Preferably, in this embodiment, the mounting part 43 is fixed to the first swing member 52 by a threaded connection, which is convenient for disassembly and replacement.

[0037] The connecting rod 7 includes a guide portion 71, a fitting portion 72, and a connecting portion 73. The guide portion 71 is conical to facilitate the accurate insertion of the washing needle 8 into the fitting portion 72. The guide portion 71 is fixedly connected to the fitting portion 72. The guide portion 71, the fitting portion 72, and the connecting portion 73 are integrally formed. The end of the fitting portion 72 away from the guide portion 71 is fixedly connected to the connecting portion 73. The outer wall of the fitting portion 72 protrudes from the outer wall of the connecting portion 73. The fitting portion 72 is used to fit the washing needle 8. The two are fitted together by an interference fit to ensure that the washing needle 8 can be firmly fitted onto the fitting portion 72. The connecting portion 73 is fixedly connected to the second ornament 53. Preferably, in this embodiment, the connecting portion 73 is fixed to the second ornament 53 by a threaded connection, which facilitates disassembly and replacement.

[0038] The rinsing needle 8 is made of metal, such as stainless steel or titanium alloy. Stainless steel has good corrosion resistance and strength and can be protected from corrosion during long-term contact with the cleaning fluid. Titanium alloy has higher strength and lighter weight, which can improve the vibration performance of the rinsing needle 8. The surface of the rinsing needle 8 is polished to make it smoother and reduce damage to the root canal wall. Preferably, in this embodiment, the rinsing needle 8 is made of titanium alloy.

[0039] The outer casing 1 has an external groove, and a rubber sleeve 9 is covered at the external groove. The rubber sleeve 9 is located at the universal bearing 6 and is fixedly connected to the outer casing 1. Preferably, in this embodiment, the rubber sleeve 9 and the outer casing 1 are connected by a threaded connection, which facilitates disassembly and replacement. The elasticity and sealing of the rubber sleeve 9 effectively protect the universal bearing 6 and reduce the possibility of damage caused by external factors.

[0040] The outer wall of the rubber sleeve 9 is provided with a swing groove. The end of the second swing member 53 away from the swing member 51 is inserted into the swing groove. There is a gap between the groove wall of the swing groove and the swing assembly 5. This gap can provide enough space for the swing assembly 5 to swing, reduce the possibility of the first swing member 52 interfering with the rubber sleeve 9 during the swing process. At the same time, the gap can also play a buffering role, reducing the impact force on the rubber sleeve 9 when the swing assembly 5 swings.

[0041] The implementation principle of the root canal irrigator in this embodiment is as follows: When the drive assembly 2 is started, the drive assembly 2 drives the eccentric rotor 3 to rotate through the transmission group. Since the eccentric hole 31 on the eccentric rotor 3 is off-center from the central axis, the eccentric hole 31 will make a circular motion, thereby driving the eccentric rod 4 inserted therein to move. The movement of the eccentric rod 4 is transmitted to the swinging component 51 through the mounting part 43. The swinging component 51 makes a spherical swing under the spherical rotation connection structure of the universal bearing 6. The swing of the swing assembly 5 is transmitted to the irrigating needle 8 through the connecting rod 7, so that the irrigating needle 8 can achieve multi-directional vibration, expand the cleaning coverage area. At the same time, the metal irrigating needle 8 has high mechanical strength and energy conduction efficiency, which can effectively improve the service life and irrigation performance of the irrigator, increase the vibration amplitude, effectively remove stubborn debris and bacterial biofilm, greatly improve the root canal cleaning effect, and reduce the postoperative infection risk. Compared with the prior art, this embodiment solves the problems of low mechanical strength of plastic material, poor energy conduction efficiency, single output end structure, fixed stirring direction, and small vibration amplitude, and has significant improvement and contribution.

[0042] Example 2 Reference Figure 4 The difference between this embodiment and Embodiment 1 lies in the relative positions of the first and second ornaments 52 and 53, and the rinsing needle 8 is directly connected to the second ornament 53. In this embodiment, the first and second ornaments 52 are located on the same straight line, and the rinsing needle 8 is fixedly connected to the second ornament 53, allowing the rinsing needle 8 to penetrate deeper into the oral cavity, facilitating the doctor's operation. Preferably, in this embodiment, the rinsing needle 8 is fixed to the second ornament 53 by a threaded connection, facilitating disassembly and replacement.

[0043] Example 3 Reference Figure 5 The difference between this embodiment and Embodiment 2 lies in the connection method between the drive assembly 2 and the eccentric rotor 3. In this embodiment, the output end of the drive assembly 2 is fixedly connected to the eccentric rotor 3, eliminating the transmission assembly, so that the power of the drive assembly 2 is directly transmitted to the washing needle 8, resulting in stronger cleaning ability.

[0044] The above are all preferred embodiments of this application. These embodiments are only explanations of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A root canal irrigation device, comprising a housing (1), a drive assembly (2), and an eccentric rotor (3), wherein the drive assembly (2) is assembled inside the housing (1), the output end of the drive assembly (2) is connected to the eccentric rotor (3), and an eccentric hole (31) is provided at the end of the eccentric rotor (3) away from the drive assembly (2), characterized in that, An eccentric rod (4) is inserted into the eccentric hole (31). The eccentric rod (4) is connected to a swing assembly (5). The outer shell (1) is connected to a universal bearing (6). The universal bearing (6) is connected to the swing assembly (5). The swing assembly (5) is connected to the outer shell (1) in a spherical swinging manner through the universal bearing (6). The end of the swing assembly (5) away from the eccentric rod (4) is connected to a washing needle (8).

2. The root canal irrigation device according to claim 1, characterized in that, The universal bearing (6) includes a fixed part (61) and a rotating part (62). The fixed part (61) is connected to the housing (1), and the rotating part (62) is spherically rotatably connected to the fixed part (61). The swing assembly (5) is connected to the rotating part (62).

3. The root canal irrigation device according to claim 1, characterized in that, The outer casing (1) has an external groove, and a rubber sleeve (9) is covered at the external groove. The rubber sleeve (9) is located at the universal bearing (6).

4. A root canal irrigation device according to claim 3, characterized in that, The rubber sleeve (9) has a swing groove, and the end of the swing assembly (5) away from the eccentric rod (4) is inserted into the swing groove.

5. A root canal irrigation device according to claim 4, characterized in that, There is a gap between the wall of the swing groove and the swing assembly (5).

6. A root canal irrigation device according to claim 1, characterized in that, The eccentric rod (4) includes a transmission part (41), a thin rod part (42), and a mounting part (43). The transmission part (41) is connected to the thin rod part (42). The end of the thin rod part (42) away from the transmission part (41) is connected to the mounting part (43). The transmission part (41) is inserted into the eccentric hole (31). The transmission part (41) is spherically protruding from the outer wall of the thin rod part (42). The mounting part (43) is connected to the swing assembly (5).

7. A root canal irrigation device according to claim 1, characterized in that, The swing assembly (5) includes a swing member (51), a first swing member (52) and a second swing member (53). The swing member (51) is connected to a universal bearing (6), the first swing member (52) is connected to the swing member (51), and the second swing member (53) is connected to the swing member (51).

8. A root canal irrigation device according to claim 1, characterized in that, The end of the swing assembly (5) away from the eccentric rod (4) is connected to a connecting rod (7), and the washing needle (8) is sleeved on the connecting rod (7).

9. A root canal irrigation device according to claim 8, characterized in that, The connecting rod (7) includes a guide part (71), a fitting part (72) and a connecting part (73). The guide part (71) is connected to one end of the fitting part (72). The end of the fitting part (72) away from the guide part (71) is connected to one end of the connecting part (73). The outer wall of the fitting part (72) protrudes from the outer wall of the connecting part (73). The washing needle (8) is fitted onto the fitting part (72). The connecting part (73) is connected to the swing assembly (5).

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