A root canal irrigation device with omnidirectional diffused light source

Abstract

This invention provides a root canal irrigation device with a circumferential diffused light source, including an instrument handle with an internal mounting cavity and an opening at one end; a motor housed within the mounting cavity, with its drive shaft extending axially from the opening; a working tip connected to the drive shaft; a light guide sleeve fitted onto the drive shaft, the front end of which has a convex surface with a rounded transition, and the rear end of which has a concave surface with a corresponding rounded transition; and a lamp plate housed within the mounting cavity and spaced behind the light guide sleeve. Through the rounded transition structure of the convex front and concave rear ends of the light guide sleeve, combined with the rear-mounted lamp plate, a circumferential diffused light source optical effect is achieved, simultaneously covering the root canal operating area and the external oral cavity observation area within the working tip's front range, meeting the multi-scenario lighting needs for root canal irrigation at different depths.

Description

Technical Field

[0001] This utility model relates to the field of dental medical device technology, specifically to a root canal irrigation device with a full-circuit diffused light source. Background Technology

[0002] During root canal treatment, dentists use a root canal scalpel to remove pulp debris, microorganisms, and preparation debris from the root canal. Early root canal scalpel procedures relied on wearable headlamps for lighting. This method couldn't provide illumination for specific areas, resulting in wasted lighting resources and adverse effects on the patient's eyes. With industry advancements, built-in surgical lights were developed for root canal scalpels, improving upon these issues of wasted lighting resources and eye strain.

[0003] However, in the existing technology, the light source illuminates the lower half of the working tip through the light guide tube. With a single illumination angle, it can only provide illumination for the working tip to find the root canal hole, but it cannot provide illumination for observing the rinsing effect after the rinsing needle is inserted into the root canal. It also cannot take into account the different illumination needs inside and outside the oral cavity, thus affecting the accuracy of the doctor's judgment. Utility Model Content

[0004] The purpose of this invention is to provide a root canal irrigation device with a circumferential diffused light source, which aims to solve the problem that the light source equipped on the existing root canal irrigation device has a single illumination angle and cannot meet the different illumination needs inside and outside the oral cavity.

[0005] To achieve the above objectives, this utility model provides a root canal irrigation device with a circumferential scattering light source, comprising: an instrument handle, the instrument handle having an internal mounting cavity with an opening at one end; a motor disposed within the mounting cavity, the motor's drive shaft extending axially from the opening; a working tip connected to the drive shaft; a light guide sleeve fitted onto the drive shaft and located within the mounting cavity, the front end of the light guide sleeve protruding from the opening, the front end face of the light guide sleeve having a convex surface formed by an arc transition, and the rear end of the light guide sleeve having a concave surface formed by an arc transition corresponding to the convex surface; and a lamp plate disposed within the mounting cavity and spaced behind the light guide sleeve.

[0006] Furthermore, a first mounting slot and a second mounting slot are provided in the mounting cavity near the opening. The rear edge of the light guide sleeve is engaged in the first mounting slot, and the outer peripheral edge of the lamp plate is engaged in the second mounting slot.

[0007] Furthermore, the instrument handle includes an upper cover and a lower cover that are connected to each other, and a mounting cavity, a first mounting slot, and a second mounting slot are formed between the upper cover and the lower cover.

[0008] Furthermore, it also includes a circuit board, buttons, and a power supply block. The circuit board and power supply block are disposed in the mounting cavity, and the buttons are disposed on the instrument handle. The circuit board is electrically connected to the motor, lamp board, buttons, and power supply block.

[0009] Furthermore, a drive shaft damping sleeve is fitted on the drive shaft inside the mounting cavity.

[0010] Furthermore, one end of the working tip is provided with a coupling sleeve, which is inserted and connected to the transmission shaft.

[0011] Furthermore, the coupling sleeve has a square hole inside, and the transmission shaft has a square connecting shaft that matches the square hole.

[0012] Furthermore, the coupling sleeve is provided with a convex ring extending radially therefrom.

[0013] This invention provides a root canal irrigation device with a circumferentially diffused light source. Compared to existing technologies, this invention achieves the optical effect of a circumferentially diffused light source through an arc-shaped transition structure between the convex front surface and the concave rear surface of the light guide sleeve, combined with a rear-mounted lamp panel. This structure allows the light source to form a wide-angle scattering after refraction on the concave surface, and then undergo secondary refraction and diffusion through the convex surface, forming a 360° annular diffused light field. This field can simultaneously cover the root canal operating area within the working tip and the external oral observation area, meeting the multi-scenario lighting needs for root canal irrigation at different depths. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a root canal irrigation device with an all-around scattering light source according to the present invention.

[0015] Figure 2 This is a cross-sectional view of a root canal irrigation device with an all-around scattering light source according to the present invention.

[0016] Figure 3 for Figure 2 Enlarged view of section A;

[0017] Figure 4 This is a schematic diagram of the structure of a light guide sleeve in a full-circle scattering light source according to the present invention;

[0018] Figure 5 This is a schematic diagram of the structure of the light guide sleeve in a full-circumference scattering light source according to this utility model from another perspective.

[0019] Explanation of reference numerals in the attached figures

[0020] 10-Instrument handle; 101-Upper cover; 102-Lower cover; 11-Mounting cavity; 12-Opening; 13-Lamp panel; 14-Drive shaft damping sleeve; 15-First mounting slot; 16-Second mounting slot;

[0021] 20 - Motor; 22 - Drive shaft;

[0022] 30 - Working point; 31 - Coupling sleeve; 32 - Convex ring;

[0023] 40 - Light guide sleeve; 41 - Convex surface; 42 - Concave surface;

[0024] 50 - Circuit board; 51 - Button; 52 - Power supply block. Detailed Implementation

[0025] The present invention will be described in detail below with reference to specific embodiments.

[0026] In this utility model, when directional terms appear, they are used to facilitate the description of this utility model and simplify the description, rather than indicating or implying that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this utility model.

[0027] In this utility model, unless otherwise explicitly specified and limited, when terms such as "set in," "connected," or "linked" appear, these terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] like Figures 1 to 5 As shown, a root canal irrigation device with a full-circumference diffused light source includes an instrument handle 10, a motor 20, a light guide sleeve 40, and a lamp plate 13.

[0029] The instrument handle 10 has a mounting cavity 11 inside, and an opening 12 at one end of the mounting cavity 11. The motor 20 is installed in the mounting cavity 11, and the drive shaft 22 of the motor 20 extends axially from the opening 12. The working tip 30 is connected to the drive shaft 22.

[0030] The light guide sleeve 40 is fitted onto the drive shaft 22 and located within the mounting cavity 11. The front end of the light guide sleeve 40 protrudes from the opening 12, and the front end face of the light guide sleeve 40 has a convex surface 41 formed by an arc transition. The rear end of the light guide sleeve 40 has a concave surface 42 formed by an arc transition corresponding to the convex surface 41. A stop is provided at the opening 12, which is threaded to the end of the instrument handle 10, for fixing the front end of the light guide sleeve 40.

[0031] The lamp plate 13 is disposed inside the mounting cavity 11 and is located at a distance behind the light guide sleeve 40.

[0032] In practical implementation, the arc transition structure between the convex surface 41 at the front end and the concave surface 42 at the rear end of the light guide sleeve 40, combined with the lamp panel 13 at the rear, achieves the optical effect of a full-circumference scattering light source. This structure allows the light from the light source to form a wide-angle scattering after being refracted by the concave surface 42, and then undergoes secondary refraction and diffusion through the convex surface 41, forming a 360° annular scattering light field. This field can simultaneously cover the root canal operation area and the external oral cavity observation area within the range of the working tip 30, meeting the multi-scenario lighting needs during root canal irrigation at different depths.

[0033] The convex surface 41 radius of curvature (R1) and concave surface 42 radius of curvature (R2) of the light guide sleeve 40 are optimized (R1:R2 = 1:1.2-1.5). Combined with the controlled spacing (3-5mm gap) between the lamp plate 13 and the light guide sleeve 40, an axially progressive light intensity distribution is formed. When the working tip 30 penetrates deep into the root canal, the scattered light field can form 3-5 alternating bright and dark annular light spots along the root canal axis, providing three-dimensional illumination in the depth direction, allowing the doctor to clearly observe the tissue residue at different depths of the root canal during the irrigation process.

[0034] The light guide sleeve 40 is made of high-refractive-index optical-grade PC material (refractive index 1.58-1.62).

[0035] In this embodiment, a first mounting slot 15 and a second mounting slot 16 are provided in the mounting cavity 11 near the opening 12. The rear edge of the light guide sleeve 40 is engaged in the first mounting slot 15, and the outer peripheral edge of the lamp plate 13 is engaged in the second mounting slot 16.

[0036] Specifically, the instrument handle 10 includes an upper cover 101 and a lower cover 102 that are connected to each other, and a mounting cavity 11, a first mounting slot 15 and a second mounting slot 16 are formed between the upper cover 101 and the lower cover 102.

[0037] In practice, the instrument handle 10 adopts a structure in which the upper cover 101 and the lower cover 102 are connected to each other, which makes it easy to install the parts inside the instrument handle 10. Finally, the upper cover 101 and the lower cover 102 are locked and fixed with screws.

[0038] In this embodiment, the system also includes a main circuit board 50, a button 51, and a power supply block 52. The main circuit board 50 and the power supply block 52 are disposed in the mounting cavity 11, and the button 51 is disposed on the instrument handle 10. The main circuit board 50 is electrically connected to the motor 20, the lamp board 13, the button 51, and the power supply block 52.

[0039] In this embodiment, a drive shaft damping sleeve 14 is fitted on the drive shaft 22 inside the mounting cavity 11 to reduce the vibration between the rotating shaft and the instrument handle 10 during operation.

[0040] In this embodiment, one end of the working tip 30 is provided with a coupling sleeve 31, which is connected to the transmission shaft 22 by insertion.

[0041] Specifically, the coupling sleeve 31 has a square hole inside, and the transmission shaft 22 has a square connecting shaft that matches the square hole.

[0042] In practice, the working tip 30 and the drive shaft 22 are connected by a plug-in connection, which eliminates the multiple rotation operations required by the traditional threaded connection. Only one axial plug-in is needed to complete the installation, which greatly shortens the time for changing root canal irrigation needles in clinical operations and effectively improves assembly efficiency.

[0043] Furthermore, the square cross-section mating structure has positioning characteristics, allowing the root canal irrigation needle to automatically maintain a preset angle after insertion, eliminating random angle deviations caused by traditional threaded connections and ensuring consistent handle grip angles during operation. The surface contact of the square mating surface offers higher mating stability compared to the line contact of threads, preventing a sudden drop in energy transmission efficiency.

[0044] In this embodiment, the coupling sleeve 31 is provided with a convex ring 32 extending radially thereon, which is used to provide more force when disassembling and installing by hand, and to make disassembly and assembly more convenient.

[0045] Where there is no conflict, the above embodiments and features can be combined with each other.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A root canal irrigation device with a circumferential diffused light source, characterized in that, include: An instrument handle, wherein the instrument handle has a mounting cavity inside, and one end of the mounting cavity has an opening; An electric motor is disposed within the mounting cavity, and the drive shaft of the electric motor extends axially from the opening; The working tip is connected to the drive shaft; A light guide sleeve is fitted onto the drive shaft and located within the mounting cavity. The front end of the light guide sleeve protrudes from the opening, and the front end face of the light guide sleeve has a convex surface formed by an arc transition. The rear end of the light guide sleeve has a concave surface formed by an arc transition corresponding to the convex surface. The light panel is disposed inside the mounting cavity and is located at a distance behind the light guide sleeve.

2. The root canal irrigation device with omnidirectional diffused light source according to claim 1, characterized in that, The mounting cavity is provided with a first mounting slot and a second mounting slot near the opening. The rear edge of the light guide sleeve is engaged in the first mounting slot, and the outer peripheral edge of the lamp plate is engaged in the second mounting slot.

3. A root canal irrigation device with a circumferential scattering light source according to claim 2, characterized in that, The instrument handle includes an upper cover and a lower cover that are connected to each other, and a mounting cavity, a first mounting slot and a second mounting slot are formed between the upper cover and the lower cover.

4. A root canal irrigation device with a circumferential scattering light source according to claim 1, characterized in that, It also includes a circuit board, buttons, and a power supply block. The circuit board and power supply block are disposed in the mounting cavity, and the buttons are disposed on the instrument handle. The circuit board is electrically connected to the motor, lamp board, buttons, and power supply block.

5. A root canal irrigation device with a circumferentially diffused light source according to claim 1, characterized in that, A vibration damping sleeve is fitted onto the drive shaft inside the mounting cavity.

6. A root canal irrigation device with a circumferential scattering light source according to claim 1, characterized in that, One end of the working tip is provided with a coupling sleeve, which is inserted and connected to the transmission shaft.

7. A root canal irrigation device with a circumferential scattering light source according to claim 6, characterized in that, The coupling sleeve has a square hole inside, and the transmission shaft has a square connecting shaft that matches the square hole.

8. A root canal irrigation device with a circumferentially diffused light source according to claim 6, characterized in that, The coupling sleeve is provided with a convex ring extending radially therefrom.

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