Low-optical-loss bend machine head of root canal preparation machine with light

Abstract

The utility model discloses a low-light-loss bend machine head of a root canal preparation machine with light, which comprises a machine head shell, a gear box, a circuit board, a light-emitting part and a light-gathering part, and the machine head shell is provided with an assembling groove; the gear box is assembled in the assembling groove, and a cavity is formed by the outer surface of the gear box and the inner surface of the machine head shell; the circuit board is arranged in the cavity; the light-emitting part is electrically connected with the circuit board; the light gathering piece is arranged in front of the light emitted by the light emitting piece and gathers the light emitted by the light emitting piece. According to the utility model, under the condition that the diameter of the light guide optical fiber is not increased, the light guide rate is higher, and the light loss is reduced; and the irradiation area of the focal beam can be controlled by adjusting the focal length, so that the use of light guide optical fibers with different sizes can be met, and the flexibility is higher. The distance between the light gathering piece and the light emitting piece can be kept, dust is not prone to accumulation, and the influence of dust on the light guide rate is smaller.

Description

Technical Field

[0001] This utility model relates to the field of dental medical device technology, specifically a low-light-loss curved head for a root canal preparation machine. Background Technology

[0002] In the field of dental treatment, root canal preparation is one of the important steps in treating pulpitis and periapical periodontitis. As a key tool in this process, the performance and reliability of the root canal preparation machine directly affect the treatment outcome and patient comfort. With continuous technological advancements, modern root canal preparation machines are generally equipped with LED lights at the front of the machine head to provide ample illumination, helping dentists to more clearly observe the internal condition of the root canal, thereby improving the accuracy and efficiency of treatment.

[0003] Existing root canal preparation machines with optical heads have an LED light guiding an optical fiber. The fiber end faces the LED light, but there is a certain distance between them. To ensure acceptable light loss, the fiber diameter needs to be increased to ensure sufficient light throughput. Current technology requires the optical fiber to be aligned with the light source and have a consistent shape. The fiber area needs to be larger than the light source surface to ensure minimal light loss, which is difficult to achieve in space-constrained situations and places high demands on assembly. Furthermore, there is a small gap between the fiber surface and the lamp surface; dirt or dust can significantly increase light loss. Sealing the gap with adhesive or other methods can introduce stress, making the fiber prone to breakage. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a low-light-loss optical root canal preparation machine bend head, which can solve problems such as light loss and fiber breakage in the root canal preparation machine.

[0005] The technical solution adopted by this utility model to solve its problem is as follows:

[0006] A low-light-loss, light-integrated root canal preparation machine bend head, comprising:

[0007] A head housing, wherein the head housing has an assembly groove;

[0008] A gearbox, which is assembled in the mounting slot, and the outer surface of the gearbox forms a cavity with the inner surface of the machine head housing;

[0009] A circuit board, wherein the circuit board is disposed within the cavity;

[0010] A light-emitting element, which is electrically connected to the circuit board;

[0011] A light-concentrating element is disposed in front of the light emitted by the light-emitting element to concentrate the light emitted by the light-emitting element.

[0012] The light-emitting element and the light-concentrating element are disposed in the cavity. A rotating head is provided at the end of the machine head housing away from the gearbox. A light-guiding optical fiber is provided inside the machine head housing. One end of the light-guiding optical fiber is disposed close to the rotating head and extends to the outside of the machine head housing, while the other end faces the light-concentrating element, so that the light emitted by the light-emitting element is concentrated by the light-concentrating element and then transmitted to the light-guiding optical fiber.

[0013] The focusing element is located between the optical fiber and the light-emitting element, and its position is adjustable.

[0014] The focusing element is a focusing cover or a convex lens.

[0015] The convex lens is installed inside the cavity by means of a lens cover, or is installed on the outer surface of the gearbox by means of adhesive or snap-fit.

[0016] The outer surface of the gearbox away from the head housing is provided with an annular groove, and a seal is provided in the annular groove.

[0017] The machine head housing is provided with a spindle assembly cavity and a light guide fiber assembly cavity. The spindle assembly cavity and the light guide fiber assembly cavity are isolated from each other. The light guide fiber is disposed in the light guide fiber assembly cavity. The end of the light guide fiber assembly cavity away from the gearbox is provided with a clearance hole so that the light transmitted by the light guide fiber can pass through the machine head housing.

[0018] The sealing element is one of an O-ring, a gasket, or a potting layer.

[0019] The machine head housing is detachably connected to the gearbox.

[0020] The present invention provides a low-light-loss, light-integrated root canal preparation machine bending head, which has the following technical advantages:

[0021] 2. The light emitted by the light-emitting element is focused onto the inner surface of the optical fiber by the light-concentrating element. The illumination area of ​​the focused beam can be controlled by adjusting the focal length, which can meet the needs of optical fibers of different sizes and is more flexible.

[0022] 3. The light-guiding component and the optical fiber do not need to be close together to ensure the light guide rate. The spacing can be adjusted according to the working conditions, making it more adaptable.

[0023] 4. The light-concentrating component and the light-emitting component can maintain a distance, making it less likely for dust to accumulate, and the light transmittance is less affected by dust. Attached Figure Description

[0024] Figure 1 This is a cross-sectional view of the present invention;

[0025] Figure 2 for Figure 1 Enlarged view of part A and schematic diagram of the optical path;

[0026] Figure 3 for Figure 1 Enlarged view of part B;

[0027] Figure 4 for Figure 1 Enlarged view of part C;

[0028] In the diagram: 1. Rotating head; 2. Head housing; 3. Optical fiber; 4. Spindle assembly cavity; 5. Spindle; 6. Gearbox; 7. Optical fiber assembly cavity; 8. Circuit board; 9. Light-emitting element; 10. Convex lens; 10-1. Light-receiving area; 10-2. Lens axis; 10-3. Lens centerline; 10-4. Beam edge; 10-5. Reverse extension line of the light-receiving boundary; 11. Cavity; 12. Lens cover; 13. Clearance hole; 14. Annular groove; 15. Seal. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this is not intended to limit the present invention.

[0030] See Figures 1-4 This utility model discloses a low-light-loss, light-integrated root canal preparation machine bending head, including a head housing 2, a gearbox 6, a circuit board 8, a light-emitting element 9, and a focusing element. The head housing 2 has an assembly groove; the gearbox 6 is assembled in the assembly groove, and the outer surface of the gearbox 6 and the inner surface of the head housing 2 form a cavity 11; the circuit board 8 is disposed in the cavity 11; the light-emitting element 9 is electrically connected to the circuit board 8; the focusing element is disposed directly in front of the light emitted by the light-emitting element 9 to focus the light emitted by the light-emitting element 9.

[0031] Specifically, the headpiece housing 2 has an assembly slot for accommodating the gearbox 6. The gearbox 6 is assembled in the assembly slot of the headpiece housing 2. A cavity 11 is formed by the concavity of the outer surface of the gearbox 6 or the expansion of the headpiece housing 2, for mounting the circuit board during assembly of the gearbox 6 and the headpiece housing 2. The circuit board 8 is located within the cavity 11, and the light-emitting element 9 is electrically connected to the circuit board 8. A focusing element is positioned directly in front of the light emitted by the light-emitting element 9 to focus the light emitted by the light-emitting element 9. The focusing element allows for higher light transmittance and reduced light loss without increasing the diameter of the optical fiber 3. The specific location of the light-emitting element 9 and the electrical connection method between the light-emitting element 9 and the circuit board 8 are not limited here. The light-emitting element 9 can be an LED or other light source element; the specific type is not limited here, as long as it meets the needs of the root canal preparation process.

[0032] The light-emitting element 9 and the focusing element are housed within the cavity 11. A rotating head 1 is located at the end of the head housing 2 furthest from the gearbox 6. An optical fiber 3 is installed inside the head housing 2. One end of the optical fiber 3 is positioned close to the rotating head 1 and extends to the outside of the head housing 2, while the other end faces the focusing element. This allows the light emitted by the light-emitting element 9 to be focused by the focusing element before entering the optical fiber 3. Finally, the light is transmitted through the optical fiber 3 to the front end of the head or the working area requiring illumination. The focusing element concentrates the light emitted by the light-emitting element 9, reducing light loss and ensuring light transmittance without increasing the diameter of the optical fiber.

[0033] The focusing element is located between the light guide fiber 3 and the light emitting element 9 and its position is adjustable. The position of the focusing element can be adjusted according to the actual working conditions.

[0034] The focusing element is a focusing cover or a convex lens 10.

[0035] In this embodiment, the focusing element is a convex lens 10, which is disposed within the cavity 11 via a lens cover 12, such as... Figure 2 The optical path diagram shown indicates that the beam edge 10-4 represents the boundary of the beam emitted by the light-emitting element 9, and the area enclosed by the light-emitting boundary is the light-emitting area. 10-3 is the lens centerline, 10-2 is the lens axis, f is the focal length, 10-1 is the light-collecting area, and 10-5 is the distance from the focal point of the backward extension line of the beam edge to the lens center, which is the focal length. In this case, the light emitted from the light-emitting area of ​​the light-emitting element 9 is focused by the convex lens 10 and converges into a light-collecting area with a smaller radius, forming a parallel beam, which then converges to the light-guiding fiber 3. As can be seen from the schematic diagram, the light-collecting area 10-1 can be enlarged / reduced by adjusting the lens axis 10-2, i.e., adjusting the distance between the convex lens 10 and the light-guiding fiber 3, so that even when the size of the light-guiding fiber 3 is smaller than the light-emitting area, it can still collect all the beams.

[0036] In other embodiments, the convex lens 10 may also be disposed on the outer surface of the gearbox 6 by means of adhesive bonding or snap-fit.

[0037] The outer surface of the gearbox 6 away from the head housing 2 is provided with an annular groove 14, and a sealing element 15 is provided in the annular groove 14 to achieve a sealing effect at the tail end of the head, which can prevent moisture and other substances from entering the head housing.

[0038] The head housing 2 is provided with a spindle assembly cavity 5 and a light guide fiber assembly cavity 7. The spindle assembly cavity 5 and the light guide fiber assembly cavity 7 are isolated from each other. The spindle 4 is located in the spindle assembly cavity 5, and the light guide fiber 3 is located in the light guide fiber assembly cavity 7. The end of the light guide fiber assembly cavity 7 away from the gearbox 6 is provided with a clearance hole 13 so that the light transmitted by the light guide fiber 3 can pass through the head housing 2.

[0039] Specifically, seal 15 is one of an O-ring, gasket, or potting compound. Specifically, an O-ring, as a ring-shaped elastic seal, is easy to install and remove, provides high-efficiency sealing performance, and is adaptable to various environmental conditions. Gaskets, with their good sealing and cushioning properties, reduce mechanical vibration and extend equipment life, and are particularly suitable for irregular surfaces. Potting compounds, after curing, form a virtually impermeable barrier, which not only enhances mechanical stability but also provides a durable sealing effect, making them especially suitable for medical devices operating stably for extended periods.

[0040] The head housing 2 and gearbox 6 are detachably connected. Specifically, the head housing 2 and gearbox 6 are connected by a detachable method, such as a threaded connection, a snap-fit ​​connection, or a quick coupling. This structure ensures that the two can be easily separated and reassembled without affecting the integrity of the overall structure.

Claims

1. A low-light-loss, light-integrated root canal preparation machine bend head, characterized in that, include: The head housing (2) has an assembly groove; Gearbox (6), the gearbox (6) is assembled in the assembly slot, and the outer surface of the gearbox (6) and the inner surface of the machine head housing (2) form a cavity (11). Circuit board (8), said circuit board (8) is disposed in said cavity (11); Light-emitting element (9), which is electrically connected to the circuit board (8); A light-concentrating element is provided in front of the light emitted by the light-emitting element (9) to concentrate the light emitted by the light-emitting element (9).

2. The low-light-loss root canal preparation machine bending head according to claim 1, characterized in that, The light-emitting element (9) and the light-concentrating element are disposed in the cavity (11). The end of the machine head housing (2) away from the gearbox (6) is provided with a rotating head (1). The machine head housing (2) is provided with a light-guiding fiber (3). One end of the light-guiding fiber (3) is located close to the rotating head (1) and extends to the outside of the machine head housing (2). The other end faces the light-concentrating element so that the light emitted by the light-emitting element (9) is concentrated by the light-concentrating element and then transmitted to the light-guiding fiber (3).

3. The low-light-loss root canal preparation machine bending head according to claim 2, characterized in that, The light-concentrating element is located between the light-guiding fiber (3) and the light-emitting element (9) and its position is adjustable.

4. The low-light-loss root canal preparation machine bend head according to claim 3, characterized in that, The light-concentrating element is a light-concentrating cover or a convex lens (10).

5. A low-light-loss root canal preparation machine bend head according to claim 4, characterized in that, The convex lens (10) is disposed in the cavity (11) by means of lens cover (12), or disposed on the outer surface of the gearbox (6) by means of adhesive or snap-fit.

6. A low-light-loss root canal preparation machine bend head according to claims 1-5, characterized in that, The gearbox (6) has an annular groove (14) on the outer surface of the end away from the machine head housing (2), and a seal (15) is provided in the annular groove (14).

7. A low-light-loss root canal preparation machine bend head according to claims 1-5, characterized in that, The machine head housing (2) is provided with a spindle assembly cavity (5) and a light guide fiber assembly cavity (7). The spindle assembly cavity (5) and the light guide fiber assembly cavity (7) are isolated from each other. The light guide fiber (3) is located in the light guide fiber assembly cavity (7). The end of the light guide fiber assembly cavity (7) away from the gearbox (6) is provided with a clearance hole (13) so that the light transmitted by the light guide fiber (3) can pass through the machine head housing (2).

8. A low-light-loss root canal preparation machine bend head according to claims 1-5, characterized in that, The sealing element (15) is one of an O-ring, a gasket, or a potting layer.

9. A low-light-loss bendable head for root canal preparation according to claims 1-5, characterized in that, The head housing (2) is detachably connected to the gearbox (6).

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