Illumination optical fiber and device

Abstract

The invention provides an illumination optical fiber and device, and relates to the technical field of medical instruments, the illumination optical fiber provided by the invention comprises a conical tail part and a conical middle part, and the far end of the conical middle part is integrally connected with the near end of the conical tail part; the diameters of the conical tail part and the conical middle part are gradually reduced in the direction from the near end to the far end of the illumination optical fiber, and the taper of the conical tail part is greater than that of the conical middle part. The middle part, namely the conical middle part, of the illumination optical fiber is arranged to be of a conical structure, more light can be transmitted to the conical tail part, the light emitting angle of a light beam is increased, further, the far-end part, namely the conical tail part, of the illumination optical fiber is arranged to be of a conical structure, the conical degree is larger, the caliber of the light emitting end can be further reduced, and the light emitting efficiency is improved. And the emergent angle is further expanded.

Description

Technical Field

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

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

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

[0004] The purpose of the present invention is to provide an illuminating optical fiber and a device that can increase the light output angle at the distal end of the illuminating optical fiber.

[0005] In a first aspect, the present invention provides an illuminating optical fiber, including a tapered tail and a tapered middle part. The distal end of the tapered middle part is integrally connected to the proximal end of the tapered tail; From the proximal end of the illuminating optical fiber towards the distal end, the diameters of the tapered tail and the tapered middle part gradually decrease, and the taper of the tapered tail is greater than the taper of the tapered middle part.

[0006] In an optional embodiment, the taper of the tapered tail ranges from 1° to 8°; and / or, the taper of the tapered middle part ranges from 0 to 0.1°.

[0007] In an optional embodiment, the length of the tapered middle part is less than 200 mm; and / or, the length of the tapered tail ranges from 1 mm to 3 mm.

[0008] In an optional embodiment, side light-emitting holes are provided on the tapered middle part, penetrating through the outer cladding of the tapered middle part, so that the side light-emitting holes of the outer cladding of the tapered middle part and the distal end opening of the tapered tail both emit light.

[0009] In an optional embodiment, the side light-emitting holes are circular holes; or, the side light-emitting holes are annular holes arranged circumferentially around the tapered middle part; or, the side light-emitting holes are strip-shaped holes extending axially along the tapered middle part.

[0010] In an optional embodiment, the area of the core of the tapered middle part corresponding to the side light-emitting holes is roughened to increase the emission angle.

[0011] In an optional embodiment, the number of the side light-emitting holes is multiple.

[0012] In an alternative embodiment, a plurality of side light-emitting holes are arranged at intervals along the axial direction of the middle part of the cone; and / or, a plurality of side light-emitting holes are arranged at intervals along the axial direction of the middle part of the cone.

[0013] In an alternative embodiment, an outer sleeve is arranged on the outer side of the outer cladding of the middle part of the cone, and a light-transmitting hole penetrating through the outer sleeve is arranged on the outer sleeve; the shape and area of the light-transmitting hole are the same as those of the side light-emitting holes; The outer sleeve can rotate relative to the middle part of the cone so as to change the overlapping degree between the light-transmitting hole and the side light-emitting hole.

[0014] In a second aspect, the present invention provides an illumination device, including the illumination optical fiber according to any one of the foregoing embodiments.

[0015] The beneficial effects of the embodiments of the present invention are as follows: The illumination optical fiber provided by the present invention includes a tapered tail and a tapered middle part, and the distal end of the tapered middle part is integrally connected to the proximal end of the tapered tail; from the proximal end to the distal end of the illumination optical fiber, the diameters of the tapered tail and the tapered middle part gradually decrease, and the taper of the tapered tail is greater than that of the tapered middle part.

[0016] By setting the middle part of the illumination optical fiber, that is, the tapered middle part, as a tapered structure, more light can be transmitted to the tapered tail, and the beam emission angle can be increased. Further, by setting the distal part of the illumination optical fiber, that is, the tapered tail, as a tapered structure and with a larger taper, the aperture of the light-emitting end can be further reduced, and thus the emission angle can be enlarged.

[0017] In a second aspect, the illumination device provided by the present invention includes the illumination optical fiber according to any one of the foregoing embodiments. Since the illumination device provided by the present invention incorporates the above-mentioned illumination optical fiber, the illumination device provided by the present invention also has the advantages of the illumination optical fiber. Description of the Drawings

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is the radiation intensity distribution diagram of the existing illumination optical fiber; Figure 2 It is the outgoing light ray distribution diagram of the existing illumination optical fiber; Figure 3 It is the schematic diagram of the illumination optical fiber provided in Embodiment 1 of the present invention; Figure 4The radiation intensity distribution diagram of the lighting optical fiber provided in Embodiment 1 of the present invention; Figure 5 The outgoing light distribution diagram of the lighting optical fiber provided in Embodiment 1 of the present invention; Figure 6 The schematic diagram of the lighting optical fiber provided in Embodiment 2 of the present invention; Figure 7 The radiation intensity distribution diagram of the lighting optical fiber provided in Embodiment 2 of the present invention; Figure 8 The outgoing light distribution diagram of the lighting optical fiber provided in Embodiment 2 of the present invention; Figure 9 The radiation intensity distribution diagram of the lighting optical fiber with a roughened core provided in Embodiment 2 of the present invention; Figure 10 The outgoing light distribution diagram of the lighting optical fiber with a roughened core provided in Embodiment 2 of the present invention; Figure 11 The schematic diagram of the lighting optical fiber provided in Embodiment 3 of the present invention; Figure 12 The radiation intensity distribution diagram of the lighting optical fiber provided in Embodiment 3 of the present invention; Figure 13 The outgoing light distribution diagram of the lighting optical fiber provided in Embodiment 3 of the present invention; Figure 14 The radiation intensity distribution diagram of the lighting optical fiber with a roughened core provided in Embodiment 3 of the present invention; Figure 15 The outgoing light distribution diagram of the lighting optical fiber with a roughened core provided in Embodiment 3 of the present invention; Figure 16 The schematic diagram of the lighting optical fiber provided in Embodiment 4 of the present invention; Figure 17 The schematic diagram of the light-transmitting holes and side light-emitting holes in the outer jacket of the lighting optical fiber provided in Embodiment 5 of the present invention rotating from being completely non-overlapping to partially overlapping and then to being completely overlapping.

[0020] Icon: 1 - Conical middle part; 2 - Conical tail part; 3 - Annular hole; 4 - Strip-shaped hole; 5 - Circular hole; 6 - Light-transmitting hole; 7 - Side light-emitting hole; 8 - Outer jacket. Detailed implementation manners

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0022] Accordingly, 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 claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts fall within the scope of protection of the present invention.

[0023] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0024] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0025] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0026] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Embodiment 1 The illumination optical fiber provided by the present invention is used to transmit light and can be applied to ophthalmic phacoemulsification and vitrectomy products. For the convenience of description, in this embodiment, the side close to the surgeon is defined as the proximal end, and the side far from the surgeon is defined as the distal end.

[0028] As Figure 3 shown, the illumination optical fiber includes a tapered tail 2 and a tapered middle part 1. After light enters the illumination optical fiber, it passes through the tapered middle part 1 and the tapered tail 2 in sequence and then exits from the distal end of the tapered tail 2.

[0029] The distal end of the middle conical part 1 is integrally connected to the proximal end of the conical tail part 2, and an integrated optical fiber structure can be formed by overall tapering. The tapering of the middle conical part 1 ensures that on the basis of a relatively large incident port diameter, the optical flux entering the optical fiber is expanded, and the illumination brightness is increased. The distal port diameter of the conical tail part 2 is relatively thin, which can enter a thinner needle head and reduce the process difficulty.

[0030] From the proximal end to the distal end of the illumination optical fiber, the diameters of the conical tail part 2 and the middle conical part 1 gradually decrease, and the taper of the conical tail part 2 is greater than that of the middle conical part 1.

[0031] As Figures 3 - 5 shown, the value range of the taper of the middle conical part 1 is 0 - 0.1°, and the tapering length is less than 200 mm, which can transmit more light to the conical tail part 2 and increase the beam emission angle. The value range of the taper of the conical tail part 2 is 1° - 8°, and the value range of the tapering length is 1 mm - 3 mm, which can further reduce the diameter of the light output end and then expand the emission angle.

[0032] Embodiment 2 As Figure 6 shown, the difference from Embodiment 1 is that a side light output hole penetrating through the outer cladding of the middle conical part 1 is provided on the middle conical part 1, so that the side light output hole of the outer cladding of the middle conical part 1 and the distal end opening of the conical tail part 2 both output light, improving the illumination angle of the optical fiber.

[0033] The side light output hole can be set within the range of 1 mm - 5 mm from the proximal end of the conical tail part 2.

[0034] As Figures 6 - 8 shown, in this embodiment, the side light output hole can be an annular hole 3 arranged circumferentially around the middle conical part 1, thereby increasing the circumferential illumination range.

[0035] The number of side light output holes can be multiple, and multiple annular holes 3 are arranged at intervals along the axial direction.

[0036] Furthermore, when processing the side light output hole, after removing the surface cladding of the middle conical part 1, the optical fiber core at the side light output hole is roughened, so that a part of the optical fiber can be transmitted and scattered from the side, realizing that the optical fiber emission angle > 180°, and further achieving a 360° light output effect, as Figure 9 and Figure 10 shown.

[0037] Embodiment 3 As Figure 11 shown, the difference from Embodiment 2 is that in this embodiment, the side light output hole is a strip-shaped hole 4 extending axially along the middle conical part 1, thereby increasing the axial illumination range.

[0038] The number of side light-emitting holes can be multiple. A plurality of strip holes 4 are arranged at intervals in the circumferential direction, as Figures 11 - 13 shown.

[0039] Furthermore, during processing, after removing the surface cladding of the conical middle part 1, the optical fiber core at the side light-emitting holes is roughened, so that part of the optical fiber can be transmitted and scattered from the side, realizing that the light-emitting angle of the optical fiber is >180°, and further achieving a 360° light-emitting effect, as Figure 14 and Figure 15 shown.

[0040] Embodiment 4 As Figure 16 shown, the difference from Embodiment 2 is that in this embodiment, the side light-emitting holes can be circular holes 5, so as to achieve a concentrated lighting effect.

[0041] The number of side light-emitting holes can be multiple. A plurality of circular holes 5 are arranged at intervals in the circumferential direction of the conical middle part 1 to form an annular structure, and a plurality of annular structures are arranged at intervals in the axial direction of the conical middle part 1, so as to form a three-dimensional network structure.

[0042] Embodiment 5 As Figure 17 shown, the difference from Embodiment 3 or Embodiment 4 is that an outer sleeve 8 is arranged on the outer side of the outer cladding of the conical middle part 1, and a light-transmitting hole 6 penetrating through the outer sleeve 8 is arranged on the outer sleeve 8; the shape and area of the light-transmitting hole 6 are the same as those of the side light-emitting hole 7. The outer sleeve 8 can rotate relative to the conical middle part 1 to change the overlapping degree of the light-transmitting hole 6 and the side light-emitting hole 7. When there is no overlap at all, no light is emitted from the side, and the light emitted from the distal end of the illumination optical fiber is the most; as the overlapping degree increases, the light emission amount from the side increases and the light emission from the distal end decreases; when they completely overlap, the light emission from the side is the largest, and the operator can adjust the overlap according to the surgical needs.

[0043] The lighting device provided by the present invention includes an illumination optical fiber and a light source.

[0044] 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 them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions 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 conical tail portion (2) and a conical middle portion (1), wherein the distal end of the conical middle portion (1) is integrally connected to the proximal end of the conical 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 part (1) is provided with a side light-emitting hole penetrating the outer cladding of 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 part (2) can 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 conical middle portion (1) so as to change the degree of overlap between the light transmission hole (6) and the side light output hole.

2. The illumination 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) is in the range of 0-0.1°.

3. The illumination optical fiber according to claim 1, characterized in that: 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, characterized in that: The side light exit hole is a circular hole (5); Alternatively, the side light exit hole is an annular hole (3) arranged circumferentially 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, characterized in that: The fiber core of the tapered middle part (1) is roughened in an area corresponding to the side light exit hole to increase the exit angle.

6. The illumination optical fiber according to claim 1, characterized in that: The number of the side light output holes is multiple.

7. The illumination optical fiber according to claim 6, characterized in that: A plurality of the 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 axial direction 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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