Fiber coupling structure and light energy therapy device

Abstract

The present invention relates to the field of laser therapy technology, and specifically discloses a fiber optic coupling structure and a light energy therapy device. The fiber optic coupling structure includes a shell, a light source, a first light guide, a second light guide and a light guiding optical fiber. The shell has a accommodating cavity and a light outlet opening. The light source is arranged in the accommodating cavity. The first light guide and the second light guide are arranged along the opening direction of the light outlet opening. The light incident surface of the light guiding optical fiber is arranged corresponding to the second light guide. Part of the light emitted by the light source is reflected by the inner wall of the accommodating cavity and emitted to the first light guide at the light outlet opening. The first light guide is configured to converge the light to the middle of the first light guide in the first direction, and the second light guide is configured to converge the light to the middle of the second light guide in the second direction. The first direction is perpendicular to the second direction. In the above scheme, the fiber optic coupling structure can be arranged in the main unit of the light energy therapy device, which can greatly reduce the weight of the operating treatment handpiece, thereby improving the operating stability and durability of the operator.

Description

Technical Field

[0001] The present invention relates to the technical field of laser therapy, and in particular to an optical fiber coupling structure and a light energy therapy device. Background Art

[0002] In many application fields such as medical cosmetology, dermatology, and surgery, light energy therapy methods represented by pulsed intense light have become a mature and widely used technical means. The core energy source of such light energy therapy equipment usually uses a pulsed xenon lamp, which works by generating strong broadband flashes through gas discharge of xenon gas under high voltage.

[0003] Conventional light therapy devices typically employ an "internal light source integration" design approach when designing handpieces. This involves integrating a pulsed xenon lamp directly into the handpiece. This places the light energy generated closer to the treatment window, resulting in relatively low optical attenuation, which helps maintain high energy transmission efficiency to the treatment site. However, the xenon lamp and its associated components are bulky, making the entire handpiece extremely heavy and bulky. Doctors and operating technicians often need to hold the handpiece for extended periods of time for delicate manipulation, which can be uncomfortable and burdensome, impacting the accuracy and stability of treatment. Summary of the Invention

[0004] The present invention discloses an optical fiber coupling structure and a light energy therapeutic device to solve the above technical problems existing in the related art.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present application provides a fiber coupling structure, which includes a housing, a light source, a first light guide, a second light guide, and a light-guiding optical fiber; wherein:

[0007] The housing has a receiving cavity and a light outlet opening communicating with the receiving cavity, the light source is disposed in the receiving cavity, the first light guide member and the second light guide member are arranged along an opening direction of the light outlet opening, and the light incident surface of the light guide optical fiber is disposed corresponding to the second light guide member;

[0008] Part of the light emitted by the light source is reflected by the inner wall of the accommodating cavity and emitted toward the first light guide member at the light outlet opening. The first light guide member is configured to converge the light toward the middle of the first light guide member in a first direction, and the second light guide member is configured to converge the light toward the middle of the second light guide member in a second direction. The first direction is perpendicular to the second direction.

[0009] In a second aspect, the present application also provides a light energy therapy device, which includes a main unit, a hand tool and the aforementioned optical fiber coupling structure, wherein the optical fiber coupling structure is arranged in the main unit, and the distal end of the light-guiding optical fiber extends into the hand tool.

[0010] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0011] In the fiber optic coupling structure and light therapy device of the present application, the light source is independently encapsulated in the shell to form a light source part, and the first light guide and the second light guide are installed at the light output opening of the shell to form a coupling conduction part. In specific applications, the light source part and the coupling conduction part are both arranged in the main unit of the light therapy device. The light emitted by the light source is converged in two directions at two levels by the first light guide and the second light guide to form a high-density light beam, which is accurately projected onto the light incident surface of the light-guiding optical fiber and then transmitted to the handpiece of the light therapy device. Compared with the traditional light therapy device in which the light source is arranged in the handpiece, this layout can greatly reduce the volume and weight of the handpiece, greatly reduce the operating burden of the operator, improve the accuracy and stability of the treatment operation, and at the same time help to improve the durability of the treatment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only 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.

[0013] Figure 1 is a structural schematic diagram of the optical fiber coupling structure of an embodiment of the present application;

[0014] Figure 2 is a schematic cross-sectional view of the optical fiber coupling structure according to an embodiment of the present application;

[0015] Figure 3 yes Figure 2 A partial enlarged schematic diagram of point A in the middle;

[0016] Figure 4 is a schematic diagram of the distribution of the first light guide member and the second light guide member in an embodiment of the present application;

[0017] Figure 5 Schematic diagram of the arrangement of the first light guide member and the second light guide member in an embodiment of the present application.

[0018] In the picture:

[0019] 100. Shell; 110. Accommodating cavity; 120. Medium inlet; 130. Medium outlet; 200. Light source; 300. First light guide; 310. First light incident surface; 320. First light emitting surface; 400. Second light guide; 410. Second light incident surface; 420. Second light emitting surface; 500. Light-guiding optical fiber; 600. Light-transmitting element; 700. Gap area; 800. Bracket; 900. Handpiece; 1000. Sapphire; 1100. Filter. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0021] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0022] The following is combined with Figures 1 to 5 , the optical fiber coupling structure and light energy therapy device provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0023] See Figure 1 and Figure 2 The embodiment of the present application discloses a fiber coupling structure, which is applied to a light energy therapy device. The disclosed fiber coupling structure includes a shell 100, a light source 200, a first light guide 300, a second light guide 400 and a light guiding fiber 500, wherein the shell 100 has a accommodating cavity 110 and a light outlet opening connected to the accommodating cavity 110, the light source 200 is arranged in the accommodating cavity 110, and the inner wall of the accommodating cavity 110 can constitute a reflective wall surface. For example, the light source 200 can be a xenon lamp, and the inner wall of the accommodating cavity 110 can be provided with a metal coating to form a reflective wall surface. Under such a setting, part of the light emitted by the light source 200 can be directly emitted outward through the light outlet opening of the shell 100, and part of the light emitted by the light source 200 can also be reflected by the inner wall of the accommodating cavity 110 and emitted outward at the light outlet opening.

[0024] In the examples of this application, please continue to refer to Figure 2 , the first light guide member 300 and the second light guide member 400 are arranged along the opening direction of the light outlet opening, and the first light guide member 300 and the second light guide member 400 are both converging lenses. Specifically, the first light guide member 300 and the second light guide member 400 can both be cylindrical lenses, wherein the first light guide member 300 is arranged corresponding to the light outlet opening of the shell 100, and the light incident surface of the light guiding optical fiber 500 is arranged corresponding to the second light guide member 400; the light emitted by the light source 200 is emitted directly or indirectly through the light outlet opening and then emitted toward the first light guide member 300, and the first light guide member 300 is configured to converge the light toward the middle of the first light guide member 300 in the first direction, and the light after the initial convergence by the first light guide member 300 is emitted toward the second light guide member 400, and the second light guide member 400 is configured to converge the light toward the middle of the second light guide member 400 in the second direction, and the first direction is perpendicular to the second direction. For example, the first direction is Figure 2 The middle Z axis direction, the second direction is Figure 2 In the Y-axis direction, the light after being converged twice by the second light guide member 400 is emitted to the light incident surface of the light guide fiber 500. The light after being converged twice can efficiently enter the light guide fiber 500 and be transmitted to the far end for light energy therapy.

[0025] In the fiber optic coupling structure of the embodiment of the present application, the light source 200 is independently encapsulated in the shell 100 to form a light source part, and the first light guide 300 and the second light guide 400 are installed at the light output opening of the shell 100 to form a coupling conduction part. In specific applications, the light source part and the coupling conduction part are both arranged in the main unit of the light energy therapy device. The light emitted by the light source 200 is converged in two directions at two levels by the first light guide 300 and the second light guide 400 to form a high-density light beam, which is accurately projected onto the light incident surface of the light guide fiber 500 and then transmitted to the handpiece of the light energy therapy device. Compared with the traditional light energy therapy device in which the light source is arranged in the handpiece, this layout in which both the light source part and the coupling conduction part are arranged in the main unit can greatly reduce the volume and weight of the handpiece, greatly reduce the operating burden of the operator, improve the accuracy and stability of the treatment operation, and at the same time is conducive to improving the durability of the treatment operation.

[0026] In the examples of this application, see Figure 2 and Figure 3The light source 200 is a columnar structure, and the inner wall of the accommodating cavity 110 has a reflective side surface, which is a parabola. The light source 200 is located at the focus of the reflective side surface. It should be noted that the light source 200 is located at the focus of the reflective side surface, which means that the extension direction of the reflective side surface is consistent with the axial direction of the cylindrical light source 200, and the axis of the cylindrical light source 200 always passes through the focus of the reflective side surface. Under such a setting, the light of the light source 200 irradiated on the reflective side surface can be reflected by the reflective side surface and then emitted almost parallel to the light output opening. In this way, the usable light emitted by the light source 200 can be emitted through the light output opening as much as possible, providing sufficient light for the convergence of the first light guide 300 and effectively improving the energy density. At the same time, the divergence angle of the parallel light beam reflected by the reflective side surface is extremely small, and the energy is concentrated in a narrow area, which is beneficial to the convergence processing of the first light guide 300 and the second light guide 400.

[0027] In the embodiment of the present application, the light outlet opening of the housing 100 may be a rectangular opening, and the reflected light beams generated by the cylindrical light source 200 in the parabolic reflective side surface are naturally distributed in a rectangular shape. For example, see Figure 2 In the figure, the Z-axis direction is the long side direction of the light exit opening, and the Y-axis direction is the short side direction of the light exit opening. The long side of the rectangular light exit opening covers the widening of the light beam in the first direction, and the short side of the rectangular light exit opening covers the widening of the light beam in the second direction, that is, the rectangular light exit opening does not block the light reflected from the reflective side, so that the reflected light beam is almost completely directly exported through the light exit opening; at the same time, when the light exit opening is a rectangular opening, the first light guide 300 only needs to perform a pure focusing function in the first direction, and the second light guide 400 only needs to perform a pure focusing function in the second direction. Both do not require additional correction of the divergence angle, and simpler lenses can be designed and selected, which can reduce the manufacturing and selection costs of the first light guide 300 and the second light guide 400.

[0028] For further technical solutions, please continue to refer to Figure 2 and Figure 3The fiber coupling structure may further include a light-transmitting member 600, which is a hollow cylindrical structure. The light-transmitting member 600 is disposed around the periphery of the light source 200 and forms a gap region 700 between the light source 200 and the light source 200. The gap region 700 is used to circulate a heat dissipation medium. For example, the light-transmitting member 600 may be a glass tube, and the heat dissipation medium may be water. Heat generated by the light source can be directly dissipated through the heat dissipation medium flowing through the gap region 700, thereby significantly reducing the operating temperature of the light source 200 and ensuring the service life and stability of the light source 200. For example, the housing 100 is provided with a medium inlet 120 and a medium outlet 130, which are connected to the gap region 700. The heat dissipation medium can enter the gap region 700 through the medium inlet 120 and, after sufficient heat exchange with the light source 200, flow out of the medium outlet 130, removing heat from the light source 200. It will be appreciated that the light-transmitting member 600 has high light transmittance. For example, the light-transmitting member 600 may be made of optical quartz or a transparent glass material with high thermal conductivity.

[0029] In the examples of this application, see Figure 2 、 Figure 4 and Figure 5 The first light guide member 300 is a strip structure extending along the first direction. The first light guide member 300 has a first light incident surface 310 and a first light emitting surface 320. The first light incident surface 310 and the first light emitting surface 320 are two outer wall surfaces of the first light guide member 300 opposite to each other, wherein the first light incident surface 310 is a plane, the length direction of the first light incident surface 310 is the first direction, and the width direction of the first light incident surface 310 is the second direction. The first light incident surface 310 is adapted to the light emitting opening, that is, all the light emitted through the light emitting opening can be projected onto the first light incident surface 310. The first light emitting surface 320 is a cylindrical surface. The light incident on the first light guide member 300 through the first light incident surface 310 converges on the first light emitting surface 320 and converges in the middle of the first light guide member 300 in the first direction.

[0030] In an embodiment of the present application, the second light guide member 400 is a strip structure extending along the second direction. The second light guide member 400 has a second light incident surface 410 and a second light emitting surface 420. The second light incident surface 410 is a plane, and the second light emitting surface 420 is a cylindrical surface. The light rays converged by the first light guide member 300 are projected onto the second light incident surface 410 and converge toward the middle of the second light guide member 400 in the second direction on the second light emitting surface 420.

[0031] Based on the arrangement of the first light guide member 300 and the second light guide member 400, the light emitted through the light exit opening is concentrated in the first direction and the second direction. After being converged twice by the first light guide member 300 and the second light guide member 400, the light emitted by the light source 200 becomes more concentrated and orderly transmitted to the light-guiding optical fiber 500, thereby forming a stronger light spot at the target treatment site, which improves the utilization rate of light energy. Under the same light source power, more effective treatment light can be output, thereby improving the accuracy and effect of treatment.

[0032] In the examples of this application, see Figure 2 and Figure 4 The optical fiber coupling structure may further include a bracket 800, which is connected to the housing 100. For example, the bracket 800 may be fixed to the housing 100 by gluing, snapping, or threaded fasteners. The present application does not impose any specific restrictions on this. The bracket 800 may serve as an installation base for the first light guide 300 and the second light guide 400. The first light guide 300 and the second light guide 400 are both provided on the bracket 800. The proximal end of the light-guiding optical fiber 500 is connected to the bracket 800, and the second light-emitting surface 420 of the second light guide 400 is opposite to the light-entering surface of the light-guiding optical fiber 500.

[0033] The embodiment of the present application also discloses a light energy therapy device, which includes a main unit, a handpiece 900 and the aforementioned fiber optic coupling structure. The fiber optic coupling structure is arranged in the main unit, the proximal end of the light guide fiber 500 is connected to the main unit, and the light entrance surface of the light guide fiber 500 is opposite to the second light exit surface 420, and the distal end of the light guide fiber 500 extends into the handpiece 900. Under such a setting, the light source part and the coupling transmission part are both arranged in the main unit of the light energy therapy device. The light emitted by the light source 200 is converged in two directions at two levels by the first light guide member 300 and the second light guide member 400 to form a high-density light beam, which is precisely projected onto the light entrance surface of the light guide fiber 500 and then transmitted to the handpiece 900 of the light energy therapy device. Compared with the traditional light energy therapy device in which the light source is arranged in the handpiece, this layout can greatly reduce the volume and weight of the handpiece, greatly reduce the operating burden of the operator, improve the accuracy and stability of the operation treatment, and at the same time is conducive to improving the durability of the treatment operation.

[0034] In a further technical solution, sapphire 1000 is provided in the handpiece 900, and sapphire 1000 is used to contact the skin. On the one hand, the sapphire 1000 lens can focus the laser and transmit it to the skin to the maximum extent, so that the light beam is well coupled with the skin, reducing internal reflection and ensuring that sufficient energy reaches the treatment site. On the other hand, sapphire 1000 effectively cools the epidermis through heat conduction, reducing thermal damage to the epidermis during laser treatment. This cooling method is more efficient than exogenous air cooling and can ensure the safety of treatment.

[0035] In a further technical solution, the sapphire 1000 is in a truncated cone shape, the small end of the sapphire 1000 is arranged corresponding to the light-emitting surface of the light-guiding optical fiber 500, and the large end of the sapphire 1000 is used to contact the skin. The sapphire 1000 lens is conducive to the effective transmission of laser energy, reduces energy loss, and enables more laser energy to reach the treatment site.

[0036] In an embodiment of the present application, the light energy therapy device further includes a filter 1100, which is disposed in the handpiece 900 and between the light-emitting surface of the light-guiding optical fiber 500 and the sapphire 1000. The filter can accurately and selectively transmit laser light of a specific wavelength while blocking other unnecessary wavelengths. For example, in the process of using a light energy therapy device for hair removal treatment, a laser light with a wavelength in the range of 800-1100 nm is usually selected because the laser light in this wavelength band can be better absorbed by the melanin in the hair follicles and causes less damage to the surrounding normal tissues. In other words, the filter 1100 can ensure that only laser light in a specific wavelength range passes through, thereby ensuring the treatment effect. At the same time, the filter 1100 can filter out some wavelengths that are harmful to the skin, such as the ultraviolet band, to prevent the skin from being damaged.

[0037] In a preferred embodiment of the present application, the filter 1100 is detachably connected to the handpiece 900. For example, the handpiece 900 is provided with a mounting position, and the filter 1100 can be assembled in the mounting position by plugging. When the filter 1100 needs to be replaced according to the treatment purpose, the current filter 1100 can be directly pulled out and the filter 1100 to be used can be selected and reinserted, which has the characteristic of convenient replacement operation.

[0038] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0039] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A fiber coupling structure, applied to a light energy therapy device, characterized in that: It comprises a housing (100), a light source (200), a first light guide (300), a second light guide (400) and a light-guiding optical fiber (500); wherein: The housing (100) has a housing cavity (110) and a light outlet opening communicated with the housing cavity (110); the light source (200) is arranged in the housing cavity (110); the first light guide member (300) and the second light guide member (400) are arranged along the opening direction of the light outlet opening; and the light incident surface of the light guide optical fiber (500) is arranged corresponding to the second light guide member (400); The first light guide member (300) is a strip-shaped structure extending along a first direction, the first light guide member (300) having a first light incident surface (310) and a first light exit surface (320), the first light incident surface (310) being a plane adapted to the light exit opening, and the first light exit surface (320) being a cylindrical surface; The second light guide member (400) is a strip-shaped structure extending along a second direction, the second light guide member (400) has a second light incident surface (410) and a second light emitting surface (420), the second light incident surface (410) is a plane, and the second light emitting surface (420) is a cylindrical surface; The light source (200) is a columnar structure, the inner wall of the accommodating cavity (110) has a reflective side surface, the reflective side surface is a parabola, and the light source (200) is located at the focus of the reflective side surface, and part of the light emitted by the light source (200) is reflected by the inner wall of the accommodating cavity (110) and then emitted to the first light guide member (300) at the light outlet opening, and the first light guide member (300) is configured to converge the light toward the middle of the first light guide member (300) in a first direction, and the second light guide member (400) is configured to converge the light toward the middle of the second light guide member (400) in a second direction, and the first direction is perpendicular to the second direction.

2. The optical fiber coupling structure according to claim 1, wherein: It also includes a light-transmitting member (600), which is a hollow columnar structure. The light-transmitting member (600) is sleeved on the periphery of the light source (200) and forms a gap area (700) between the light-transmitting member (600) and the light source (200). The gap area (700) is used for circulating a heat dissipation medium.

3. The optical fiber coupling structure according to claim 1, wherein: The invention also includes a bracket (800), wherein the bracket (800) is connected to the housing (100), the first light guide member (300) and the second light guide member (400) are both arranged on the bracket (800), the proximal end of the light-guiding optical fiber (500) is connected to the bracket (800), and the second light-emitting surface (420) is opposite to the light-entering surface of the light-guiding optical fiber (500).

4. A light energy therapy device, characterized in that: The invention comprises a main unit, a hand tool (900), and a fiber coupling structure according to any one of claims 1 to 3, wherein the fiber coupling structure is arranged in the main unit, and the distal end of the light-guiding fiber (500) extends into the hand tool (900).

5. The light energy therapy device according to claim 4, characterized in that: A sapphire (1000) is provided in the hand tool (900), and the sapphire (1000) is used for contacting the skin.

6. The light energy therapy device according to claim 5, characterized in that: The sapphire (1000) is in a truncated cone shape, the small end of the sapphire (1000) is arranged corresponding to the light-emitting surface of the light-guiding optical fiber (500), and the large end of the sapphire (1000) is used for contacting the skin.

7. The light energy therapy device according to claim 5, characterized in that: It also includes a filter (1100), which is arranged between the light-emitting surface of the light-guiding optical fiber (500) and the sapphire (1000).

8. The light energy therapy device according to claim 7, characterized in that: The optical filter (1100) is detachably connected to the hand tool (900).

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