Laser diagnostic device

Abstract

The utility model provides a laser diagnosis device comprising a first laser light source used for emitting diagnosis laser; the light deflector is connected with the output end of the first laser light source and is used for carrying out light beam deflection at a specific angle on the diagnosis laser; the optical fiber coupler is arranged at the output end of the optical deflector and is used for coupling the diagnosis laser with the deflected light beam into one optical fiber branch of the optical fiber array; the optical fiber array is connected with the optical fiber coupler and is used for transmitting the diagnosis laser coupled by the optical fiber coupler to a focusing microlens of the focusing microlens array; wherein the optical fiber branches in the optical fiber array are mutually independent; the focusing micro-lens array is connected with the optical fiber array and is used for focusing the diagnosis laser on the diseased tissue through a focusing micro-lens to generate a laser signal with tissue characteristic information; wherein each focusing microlens in the focusing microlens array is correspondingly connected with one optical fiber branch of the optical fiber array; the device is compact in structure, easy and convenient to operate and capable of conducting refined diagnosis on diseased tissue.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser medical equipment, in particular to a laser diagnosis device. BACKGROUND

[0002] In recent years, pathological screening of biological tissues by using laser has become a new diagnosis technology. With the advantages of non-destructive imaging, high resolution and multi-dimensional measurement information, the development of modern medical precise diagnosis and treatment is increasingly inseparable from laser diagnosis technology.

[0003] At present, in the process of laser diagnosis, sampling and slicing are still needed, and then a scanning mirror or a displacement table is used for scanning. The cumbersome operation and large volume make real-time online diagnosis of in-vivo tissues difficult, which affects the popularization and use of laser diagnosis technology. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to solve one of the above technical defects, and provides a laser diagnosis device which can realize real-time online diagnosis of in-vivo tissues.

[0005] A laser diagnosis device comprises:

[0006] A first laser light source for emitting diagnosis laser;

[0007] A light deflector arranged at the output end of the first laser light source for beam deflection of the diagnosis laser at a specific angle;

[0008] A fiber coupler arranged at the output end of the light deflector for coupling the beam deflected diagnosis laser into a fiber branch of a fiber array;

[0009] A fiber array connected to the fiber coupler for transmitting the diagnosis laser coupled by the fiber coupler to a focusing microlens of a focusing microlens array; wherein each fiber branch in the fiber array is independent of each other;

[0010] A focusing microlens array connected to the fiber array for focusing the diagnosis laser by a focusing microlens to generate a laser signal with tissue characteristic information on a diseased tissue; wherein each focusing microlens in the focusing microlens array corresponds to a fiber branch connected to the fiber array.

[0011] In one embodiment, the laser diagnosis device further comprises a controller connected to the first laser light source for controlling the first laser light source to output diagnosis laser with set parameters.

[0012] In one embodiment, the first laser light source emits diagnosis laser pulses at a set period.

[0013] In one embodiment, the controller is further connected to the light deflector for controlling the deflection angle of the light deflector.

[0014] In one embodiment, the focusing microlens array is further used for collecting the laser signal and transmitting the laser signal to the first laser source through the optical fiber array, the optical fiber coupler and the light deflector in sequence.

[0015] In one embodiment, the first laser source is further used for outputting the signal characteristic parameter of the laser signal to the controller.

[0016] In one embodiment, a dichroic mirror is arranged on the light path of the output end of the first laser source for separating the laser signal from the light path.

[0017] In one embodiment, the focusing microlens in the focusing microlens array adopts a row-column n x n layout; wherein n≥2.

[0018] In one embodiment, the light deflector comprises an acousto-optic deflector or a galvanometer.

[0019] In one embodiment, the optical fiber coupler comprises a microlens array or a general lens group.

[0020] The above laser diagnostic device can use the optical fiber branch to focus the diagnostic laser to the focus point of the lesion tissue through the focusing microlens array for diagnosis, has compact structure and simple operation, can perform fine diagnosis on the lesion tissue, and is especially beneficial to real-time online diagnosis on the in-vivo tissue in limited space, thereby providing important support for the treatment of the lesion tissue.

[0021] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0023] Figure 1 FIG. 1 is a structural schematic diagram of a laser diagnostic device of one embodiment;

[0024] Figure 2 FIG. 2 is a structural schematic diagram of a laser diagnostic device of another embodiment;

[0025] Figure 3 FIG. 3 is a structural schematic diagram of an optical fiber coupler of one example;

[0026] Figure 4 FIG. 4 is an encoding schematic diagram of the deflection angle and the light exit point position of one example. Detailed Implementation

[0027] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0028] Those skilled in the art will understand that, unless otherwise stated, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the word “comprising” as used in this application’s specification means the presence of the stated feature, integer, step, or operation, but does not preclude the presence or addition of one or more other features, integers, steps, or operations.

[0029] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0030] This application provides a laser diagnostic device with a compact structure and simple operation. In particular, it can perform real-time online diagnosis of in vivo tissues in a limited space, thereby improving the laser diagnostic effect.

[0031] refer to Figure 1 As shown, Figure 1 This is a schematic diagram of a laser diagnostic device according to one embodiment, including: a first laser source 11, an optical deflector 12, an optical fiber coupler 13, an optical fiber array 14, and a focusing microlens array 15 connected sequentially through an optical path; wherein, the optical deflector 12 is connected to the output end of the first laser source 11, the optical fiber coupler 13 is connected to the output end of the optical deflector 12, the optical fiber array 14 is connected to the optical fiber coupler 13, the optical fiber coupler 13 is independently connected to each optical fiber branch in the optical fiber array 14, and each optical fiber branch is connected to a focusing microlens in the focusing microlens array 15. The length of the optical fiber in the optical fiber array 14 can be set according to the transmission distance. For the focusing microlens in the focusing microlens array 15, the corresponding light output point position can be arranged in an n×n row and column layout, where n≥2.

[0032] During diagnosis, the first laser source 11 emits diagnostic laser. For example, the first laser source 11 can emit diagnostic laser pulses at a set period. The diagnostic laser enters the optical deflector 12, which deflects the diagnostic laser beam at a specific angle. The fiber coupler 13 couples the diagnostic laser into a fiber branch in the fiber array 14 and transmits it to the focusing microlens array 15. Then, the focusing microlens array 15 focuses the diagnostic laser onto the focal point of the lesion tissue 01 to generate a laser signal with tissue feature information.

[0033] In the above embodiment, since each optical fiber branch corresponds to a focusing microlens in the focusing microlens array 15, the diagnostic laser is transmitted using each optical fiber branch. The lesion tissue 01 is diagnosed once at the focal position of each focusing microlens in the focusing microlens array 15, thereby enabling a refined diagnosis of the lesion tissue 01 and obtaining more accurate biological tissue information of the lesion tissue 01.

[0034] In one embodiment, reference Figure 2 As shown, Figure 2 This is a schematic diagram of a laser diagnostic device according to another embodiment. It may also include a controller 20, which is connected to a first laser source 11 and an optical deflector 12. The controller 20 can control the first laser source 11 to output a diagnostic laser with set parameters and control the optical deflector 12 to deflect the diagnostic laser sequentially by a specific angle, thereby coupling the diagnostic laser into one optical fiber branch of the optical fiber array 14.

[0035] For example, in the implementation scheme of the optical deflector 12 and the fiber coupler 13, the optical deflector 12 can be an acousto-optic deflector or a galvanometer, and the fiber coupler 13 can be a microlens array or a conventional lens group. Figure 3 As shown, Figure 3 This is a schematic diagram of an example fiber optic coupler structure. In order to achieve higher coupling efficiency, an arc shape is set on the fiber optic coupler 13 according to the distance between the optical deflector 12 and the fiber optic coupler 13. The end face of each fiber optic branch is set perpendicular to the laser incident direction, so that after the optical deflector 12 deflects the diagnostic laser, it can be incident perpendicularly into the fiber optic branch.

[0036] In one embodiment, in the laser diagnostic device of this application, the focusing microlens array 15 also collects the laser signal generated by the lesion tissue 01, and transmits it to the first laser source 11 in sequence through the fiber array 14, the fiber coupler 13, and the optical deflector 12; the first laser source 11 can separate the laser returning from the original path from the optical path; for example, the first laser source 11 can emit diagnostic laser pulses at a set period for diagnosis.

[0037] In one embodiment, the first laser source 11 can separate the laser signal from the optical path using a dichroic mirror 11a disposed on the optical path.

[0038] In one embodiment, the first laser source 11 can analyze the obtained laser signal to obtain signal characteristic parameters and upload them to the controller 20; for example, the controller 20 can send the signal characteristic parameters to the corresponding system to calculate the biological tissue information of the lesion tissue 01.

[0039] During the diagnostic process, for example, the controller 20 can control the optical deflector 12 to deflect the diagnostic laser by a set angle and couple it into one of the branch optical fibers, control the first laser source 11 to emit the diagnostic laser, and then collect the laser signal returned from the original path; after completing this collection, the controller 20 controls the optical deflector 12 to deflect the diagnostic laser by the next angle, controls the first laser source 11 to emit the diagnostic laser, and then collects the laser signal returned from the original path, and so on, repeating the operation until all optical fiber branches have been collected.

[0040] refer to Figure 4 As shown, Figure 4 This is a schematic diagram illustrating the encoding of deflection angles and light emission point positions. The light emission point position is encoded for each branch fiber, with each position corresponding to a deflection angle θ, which is a spatial angle. Thus, n optical fibers can form deflection angles θ1 to θ2. n For example, the deflection angles θ1 to θ when n = 5 × 5 in the figure. 25 These can correspond to branch optical fibers coded from 1 to 25, respectively; as shown in the figure, the branch optical fibers start from code 1 and go all the way to code 25. The controller 20 determines the branch optical fibers based on the deflection angles θ1 to θ25. 25 The laser is deflected sequentially and coupled into each fiber branch of the fiber array 14. The focusing microlens array 15 then focuses the diagnostic laser onto the lesion tissue 01.

[0041] The laser diagnostic device described above is compact in structure and easy to operate, enabling precise diagnosis of diseased tissues. It is particularly beneficial for real-time online diagnosis of in vivo tissues in confined spaces.

[0042] The solution described in the above embodiments can be used for the ablation of various irregular lesions, with controllable ablation range, thorough ablation, and avoidance of damage to surrounding healthy tissues. In particular, when applied to the ablation treatment of lesions in vivo, the ablation range and precision can be controlled within a limited operating space.

[0043] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A laser diagnostic device, characterized by, The application relates to a laser diagnosis device. The device comprises: a first laser light source (11) for emitting diagnostic laser light; a light deflector (12) arranged at the output end of the first laser light source (11) and used for performing a specific-angle beam deflection on the diagnostic laser light; a fiber coupler (13) arranged at the output end of the light deflector (12) and used for coupling the beam-deflected diagnostic laser light into a fiber branch of a fiber array (14); the fiber array (14) is connected with the fiber coupler (13) and used for transmitting the diagnostic laser light coupled in by the fiber coupler (13) to a focusing microlens of a focusing microlens array (15); wherein each fiber branch of the fiber array (14) is independent of each other; 2. The laser diagnostic apparatus according to claim 1, characterized in that the focusing microlens array (15) is connected with the fiber array (14) and used for focusing the diagnostic laser light on a lesion tissue (01) through a focusing microlens to generate laser signals with tissue characteristic information; wherein each focusing microlens of the focusing microlens array (15) corresponds to a fiber branch of the fiber array (14). The device further comprises:

3. The laser diagnostic apparatus according to claim 2, characterized in that, a controller (20) connected with the first laser light source (11) and used for controlling the first laser light source (11) to output diagnostic laser light with a set parameter.

4. The laser diagnostic apparatus according to claim 2, characterized by The first laser light source (11) emits diagnostic laser light pulses at a set period.

5. The laser diagnostic apparatus according to claim 4, characterized in that The controller (20) is further connected with the light deflector (12) and used for controlling the deflection angle of the light deflector (12).

6. The laser diagnostic apparatus according to claim 5, characterized in that The focusing microlens array (15) is further used for collecting the laser signals and transmitting the laser signals through the fiber array (14), the fiber coupler (13) and the light deflector (12) to the first laser light source (11) in sequence.

7. The laser diagnostic apparatus according to claim 6, characterized in that The first laser light source (11) is further used for outputting signal characteristic parameters of the laser signals to the controller (20).

8. The laser diagnostic apparatus according to claim 1, characterized by A dichroic mirror (11a) is arranged on the light path of the output end of the first laser light source (11) and used for separating the laser signals from the light path.

9. The laser diagnostic apparatus according to claim 1, characterized by The focusing microlenses in the focusing microlens array (15) adopt an n*n layout; wherein n>=2.

10. The laser diagnostic apparatus according to claim 1, characterized by The light deflector (12) comprises an acousto-optic deflector or a galvanometer. The fiber coupler (13) comprises a microlens array or a common lens group.

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