Lighting optical fiber and devices

Abstract

The present invention provides an illumination fiber and device, relating to the technical field of medical devices. The illumination fiber provided by the present invention includes a tapered tail portion and a tapered middle portion, wherein the distal end of the tapered middle portion is integrally connected to the proximal end of the tapered tail portion. From the proximal end toward the distal end of the illumination fiber, the diameters of the tapered tail portion and the tapered middle portion gradually decrease, and the taper of the tapered tail portion is greater than the taper of the tapered middle portion. By configuring the middle portion of the illumination fiber, i.e., the tapered middle portion, as a tapered structure, more light can be transmitted to the tapered tail portion, increasing the light beam angle. Furthermore, by configuring the distal portion of the illumination fiber, i.e., the tapered tail portion, as a tapered structure with a greater taper, the aperture of the light output end can be further reduced, thereby increasing the output angle.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to an illuminating optical fiber and a device. Background Art

[0002] During many eye surgeries, surgeons are required to use various instruments to operate inside the patient's eye.

[0003] like Figure 1 and Figure 2 As shown, the existing intraocular lighting optical fiber cannot fully illuminate the intraocular area due to its small illumination angle, and therefore its angle needs to be continuously adjusted to ensure sufficient illumination. Summary of the Invention

[0004] The object of the present invention is to provide an illumination optical fiber and a device, which can improve the light output angle of the distal end of the illumination optical fiber.

[0005] In a first aspect, the present invention provides an illumination optical fiber, comprising a tapered tail portion and a tapered middle portion, wherein the distal end of the tapered middle portion is integrally connected to the proximal end of the tapered tail portion;

[0006] From the proximal end toward the distal end of the illumination optical fiber, the diameters of the tapered tail and the tapered middle gradually decrease, and the taper of the tapered tail is greater than that of the tapered middle.

[0007] In an optional embodiment, the taper of the tapered tail portion ranges from 1° to 8°;

[0008] And / or, the taper angle of the middle portion of the cone is in the range of 0-0.1°.

[0009] In an optional embodiment, the length of the tapered middle portion is less than 200 mm;

[0010] And / or, the length of the tapered tail is in the range of 1 mm to 3 mm.

[0011] In an optional embodiment, a side light exit hole penetrating the outer cladding of the tapered middle portion is provided on the tapered middle portion, so that light can be emitted from both the side light exit hole of the outer cladding of the tapered middle portion and the distal opening of the tapered tail portion.

[0012] In an optional embodiment, the side light exit hole is a circular hole;

[0013] Alternatively, the side light exit hole is an annular hole circumferentially arranged around the middle of the cone;

[0014] Alternatively, the side light-emitting hole is a strip-shaped hole extending axially along the tapered middle portion.

[0015] In an optional embodiment, the area on the tapered middle portion of the fiber core corresponding to the side light exit hole is roughened to increase the emission angle.

[0016] In an optional embodiment, there are multiple side light-emitting holes.

[0017] In an optional embodiment, a plurality of side light exit holes are arranged at intervals along the axial direction of the tapered middle portion;

[0018] And / or, a plurality of side light-emitting holes are arranged at intervals along the circumference of the tapered middle portion.

[0019] In an optional embodiment, a jacket is provided on the outer side of the outer cladding in the middle portion of the cone, and a light-transmitting hole is provided on the jacket and passes through the jacket; the shape and area of ​​the light-transmitting hole are consistent with the shape and area of ​​the side light-emitting hole;

[0020] The outer sleeve can be rotated relative to the tapered middle portion to change the degree of overlap between the light transmission hole and the side light output hole.

[0021] In a second aspect, the present invention provides an illumination device comprising the illumination optical fiber according to any one of the aforementioned embodiments.

[0022] The beneficial effects of the embodiments of the present invention are:

[0023] The lighting optical fiber provided by the present invention includes a tapered tail portion and a tapered middle portion, wherein the distal end of the tapered middle portion is integrally connected to the proximal end of the tapered tail portion; from the proximal end toward the distal end of the lighting optical fiber, the diameters of the tapered tail portion and the tapered middle portion gradually decrease, and the taper of the tapered tail portion is greater than the taper of the tapered middle portion.

[0024] By setting a tapered structure in the middle part of the lighting fiber, that is, the middle part of the cone, more light can be transmitted to the tail of the cone and the light beam angle can be increased. Furthermore, by setting a tapered structure in the distal part of the lighting fiber, that is, the tail of the cone, and the taper is larger, the aperture of the light output end can be further reduced, thereby expanding the output angle.

[0025] In a second aspect, the present invention provides an illumination device comprising the illumination optical fiber of any one of the aforementioned embodiments. Since the illumination device provided by the present invention uses the aforementioned illumination optical fiber, the illumination device provided by the present invention also has the advantages of the illumination optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 is the radiation intensity distribution diagram of the existing lighting optical fiber;

[0028] Figure 2 is the outgoing light distribution diagram of the existing lighting optical fiber;

[0029] Figure 3 A schematic diagram of an illumination optical fiber provided in Example 1 of the present invention;

[0030] Figure 4 This is a diagram showing the radiation intensity distribution of the illumination optical fiber provided in Example 1 of the present invention;

[0031] Figure 5 This is a distribution diagram of the outgoing light of the illumination optical fiber provided in Example 1 of the present invention;

[0032] Figure 6 A schematic diagram of an illumination optical fiber provided in Example 2 of the present invention;

[0033] Figure 7 This is a radiation intensity distribution diagram of the illumination optical fiber provided in Example 2 of the present invention;

[0034] Figure 8 This is a distribution diagram of the outgoing light of the illumination optical fiber provided in Example 2 of the present invention;

[0035] Figure 9 This is a radiation intensity distribution diagram of the illumination optical fiber after the core is roughened provided in Example 2 of the present invention;

[0036] Figure 10 This is a distribution diagram of the outgoing light of the illumination optical fiber after the core is roughened provided in Example 2 of the present invention;

[0037] Figure 11 A schematic diagram of an illumination optical fiber provided in Example 3 of the present invention;

[0038] Figure 12 This is a radiation intensity distribution diagram of the illumination optical fiber provided in Example 3 of the present invention;

[0039] Figure 13 This is a distribution diagram of the outgoing light of the illumination optical fiber provided in Example 3 of the present invention;

[0040] Figure 14 This is a radiation intensity distribution diagram of the illumination optical fiber after the core is roughened provided in Example 3 of the present invention;

[0041] Figure 15 This is a distribution diagram of the outgoing light of the illumination optical fiber after the core is roughened provided in Example 3 of the present invention;

[0042] Figure 16 A schematic diagram of an illumination optical fiber provided in Example 4 of the present invention;

[0043] Figure 17This is a schematic diagram showing the rotation of the light-transmitting hole and the side light-emitting hole in the outer jacket of the illumination optical fiber provided in Example 5 of the present invention from completely non-overlapping to partially overlapping and finally to completely overlapping.

[0044] Icon: 1-conical middle part; 2-conical tail; 3-ring-shaped hole; 4-strip hole; 5-circular hole; 6-light-transmitting hole; 7-side light-emitting hole; 8-outer shell. DETAILED DESCRIPTION

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0046] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0047] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0048] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0049] In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", not that the structure must be completely horizontal, but can be slightly tilted.

[0050] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0051] Example 1

[0052] The illumination optical fiber provided by the present invention is used for transmitting light and can be applied to ophthalmic phacovitrectomy products. For the sake of convenience, in this embodiment, the side close to the operator is referred to as the proximal end, and the side away from the operator is referred to as the distal end.

[0053] like Figure 3 As shown, the illumination fiber includes a tapered tail portion 2 and a tapered middle portion 1. After light enters the illumination fiber, it passes through the tapered middle portion 1 and the tapered tail portion 2 in sequence and is emitted from the distal end of the tapered tail portion 2.

[0054] The distal end of the tapered middle section 1 is integrally connected to the proximal end of the tapered tail section 2, allowing for a single-piece optical fiber structure. The tapered design of the tapered middle section 1 ensures a larger entrance port diameter, increasing the light flux entering the optical fiber and boosting illumination brightness. The narrower distal end of the tapered tail section 2 allows for the insertion of thinner needles and reduces manufacturing complexity.

[0055] From the proximal end toward the distal end of the illumination optical fiber, the diameters of the tapered tail portion 2 and the tapered middle portion 1 gradually decrease, and the taper of the tapered tail portion 2 is greater than that of the tapered middle portion 1 .

[0056] like Figure 3-Figure 5 As shown, the taper angle of the tapered middle portion 1 ranges from 0-0.1°, and the tapered length is less than 200mm. This allows more light to be transmitted to the tapered tail portion 2, increasing the beam angle. The taper angle of the tapered tail portion 2 ranges from 1°-8°, and the tapered length ranges from 1mm-3mm, further reducing the aperture of the light-emitting end and thereby increasing the output angle.

[0057] Example 2

[0058] like Figure 6 As shown, the difference from Example 1 is that a side light-emitting hole penetrating the outer cladding of the conical middle part 1 is provided on the conical middle part 1, so that the side light-emitting hole of the outer cladding of the conical middle part 1 and the distal opening of the conical tail 2 can both emit light, thereby improving the optical fiber illumination angle.

[0059] A side light outlet hole may be provided within a range of 1 mm to 5 mm from the proximal end of the tapered tail 2 .

[0060] like Figure 6-Figure 8 As shown, in this embodiment, the side light exit hole can be an annular hole 3 circumferentially arranged around the conical middle portion 1, thereby increasing the circumferential lighting range.

[0061] There may be multiple side light-emitting holes, and the multiple annular holes 3 are spaced apart along the axial direction.

[0062] Furthermore, when processing the side light-emitting hole, after removing the surface cladding of the tapered middle part 1, the fiber core at the side light-emitting hole is roughened, so that a part of the fiber can be transmitted and scattered from the side, so that the fiber output angle is greater than 180°, thereby achieving a 360° light output effect. Figure 9 and Figure 10 shown.

[0063] Example 3

[0064] like Figure 11 As shown, the difference from embodiment 2 is that, in this embodiment, the side light-emitting hole is a strip-shaped hole 4 extending axially along the tapered middle portion 1, thereby increasing the axial illumination range.

[0065] The number of side light-emitting holes can be multiple. Multiple strip holes 4 are arranged at intervals along the circumference, such as Figure 11-13 shown.

[0066] Furthermore, during processing, after removing the surface cladding of the tapered middle portion 1, the fiber core at the side light exit hole is roughened, so that a portion of the fiber can be transmitted and scattered from the side, achieving a fiber exit angle greater than 180°, thereby achieving a 360° light exit effect, such as Figure 14 and Figure 15 shown.

[0067] Example 4

[0068] like Figure 16 As shown, the difference from embodiment 2 is that, in this embodiment, the side light-emitting hole can be a circular hole 5, so as to achieve a concentrated lighting effect.

[0069] The number of the side light-emitting holes can be multiple. The multiple circular holes 5 are arranged at intervals along the circumference of the conical middle part 1 to form an annular structure, and the multiple annular structures are arranged at intervals along the axial direction of the conical middle part 1 to form a three-dimensional network structure.

[0070] Example 5

[0071] like Figure 17As shown, the difference from Example 3 or Example 4 is that an outer sleeve 8 is provided on the outer surface of the outer cladding of the tapered middle portion 1, and a light-transmitting hole 6 is provided on the outer sleeve 8 and extends through the outer sleeve 8; the shape and area of ​​the light-transmitting hole 6 are consistent with the shape and area of ​​the side light-emitting hole 7. The outer sleeve 8 can be rotated relative to the tapered middle portion 1 to change the degree of overlap between the light-transmitting hole 6 and the side light-emitting hole 7. When there is no overlap, no light is emitted from the side, and the light output from the distal end of the illumination fiber is the most accurate. As the overlap increases, the amount of light emitted from the side increases and the light output from the distal end decreases. When there is complete overlap, the side light output is maximized, and the surgeon can adjust the overlap according to surgical needs.

[0072] The lighting device provided by the present invention includes a lighting optical fiber and a light source.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An illumination optical fiber, characterized in that: It comprises a tapered tail portion (2) and a tapered middle portion (1), wherein the distal end of the tapered middle portion (1) is integrally connected to the proximal end of the tapered tail portion (2); From the proximal end toward the distal end of the illumination optical fiber, the diameters of the tapered tail portion (2) and the tapered middle portion (1) gradually decrease, and the taper of the tapered tail portion (2) is greater than the taper of the tapered middle portion (1); The conical middle portion (1) is provided with a side light-emitting hole penetrating the outer cladding of the conical middle portion (1), so that the side light-emitting hole of the outer cladding of the conical middle portion (1) and the distal opening of the conical tail portion (2) both emit light; An outer jacket (8) is provided on the outer side of the outer cladding of the tapered middle portion (1), and a light-transmitting hole (6) penetrating the outer jacket (8) is provided on the outer jacket (8); the shape and area of ​​the light-transmitting hole (6) are consistent with the shape and area of ​​the side light-emitting hole; The outer sleeve (8) is rotatable relative to the tapered middle portion (1) to change the degree of overlap between the light-transmitting hole (6) and the side light-emitting hole.

2. The lighting optical fiber according to claim 1, characterized in that The taper of the tapered tail (2) ranges from 1° to 8°; And / or, the taper of the tapered middle portion (1) has a value ranging from 0 to 0.1°.

3. The illumination optical fiber according to claim 1, wherein The length of the tapered middle portion (1) is less than 200 mm; And / or, the length of the tapered tail (2) ranges from 1 mm to 3 mm.

4. The illumination optical fiber according to claim 1, wherein The side light exit hole is a circular hole (5); Alternatively, the side light exit hole is an annular hole (3) circumferentially arranged around the conical middle portion (1); Alternatively, the side light exit hole is a strip-shaped hole (4) extending axially along the tapered middle portion (1).

5. The illumination optical fiber according to claim 1, wherein The area on the core of the tapered middle part (1) corresponding to the side light exit hole is roughened to increase the exit angle.

6. The illumination optical fiber according to claim 1, characterized in that There are multiple side light-emitting holes.

7. The illumination optical fiber according to claim 6, characterized in that A plurality of side light exit holes are arranged at intervals along the axial direction of the tapered middle portion (1); And / or, a plurality of the side light exit holes are arranged at intervals along the circumference of the tapered middle portion (1).

8. A lighting device, characterized in that: The illumination optical fiber comprises the illumination optical fiber according to any one of claims 1 to 7.

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