Laser ablation device

Abstract

The utility model provides a laser ablation device which comprises a first laser light source used for emitting treatment laser; the optical splitter is arranged at the output end of the first laser light source and is used for splitting the treatment laser into multiple paths of split laser; wherein the branch lasers are arranged in rows and columns; the optical modulator is arranged at the output end of the optical splitter and is used for performing independent power regulation and control on each branch laser; the optical fiber coupler is arranged at the output end of the optical modulator and is used for coupling the branch lasers into the optical fiber branches of the optical fiber array one by one; the optical fiber array is connected between the optical fiber coupler and the focusing micro-lens array, and each optical fiber branch corresponds to one focusing micro-lens of the focusing micro-lens array; and the focusing microlens array is used for focusing the split laser onto the diseased tissue in space through focusing microlenses for ablation treatment. The technical scheme can be used for ablation treatment of various irregular pathological tissues, and damage to surrounding healthy tissues is avoided.

Description

TECHNICAL FIELD

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

[0002] At present, laser ablation technology is used for treating pathological tissues, and various irregular pathological tissues are often encountered when using laser to ablate pathological tissues. The irregularity of the internal characteristics and external shape of these pathological tissues brings great challenges to diagnosis screening or ablation treatment.

[0003] When the conventional laser ablation technology is used to ablate these irregular tissues, there are problems such as difficulty in controlling the ablation range, incomplete ablation, and easy damage to the surrounding healthy tissues. Especially when the pathological tissues in the body are ablated, the limited operation space limits the ablation range and accuracy, affecting the treatment effect of laser ablation. CONTENT OF THE INVENTION

[0004] The present application aims to solve one of the above technical defects, and provides a laser ablation device which can improve the treatment effect of laser ablation.

[0005] A laser ablation device, comprising:

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

[0007] A beam splitter provided at the output end of the first laser light source for splitting the treatment laser into multiple branch lasers; wherein each branch laser is arranged in a row and column;

[0008] A light modulator provided at the output end of the beam splitter for independently controlling the power of each branch laser;

[0009] A fiber coupler provided at the output end of the light modulator for coupling each branch laser into a fiber branch of a fiber array one by one;

[0010] A fiber array connected between the fiber coupler and a focusing microlens array, each fiber branch corresponding to a focusing microlens of the focusing microlens array, for transmitting each branch laser to the focusing microlens array through the fiber branch;

[0011] A focusing microlens array for focusing each branch laser on the pathological tissue in space through the focusing microlens for ablation treatment.

[0012] In one embodiment, the laser ablation device further comprises a controller connected to the light modulator for controlling the power of each branch laser.

[0013] In one embodiment, the controller controls the light modulator to switch the branch laser.

[0014] In one embodiment, the light modulator comprises a spatial light modulator, a fiber-optic acousto-optic modulator or a two-dimensional spatial light modulator.

[0015] In one embodiment, the controller is further connected to the first laser light source; the controller is further configured to control the first laser light source to emit a treatment laser with a set parameter.

[0016] In one embodiment, the light splitter divides the treatment laser into a plurality of branch lasers arranged in an n×n layout; the focusing microlenses in the focusing microlens array are arranged in an n×n layout; wherein n≥2.

[0017] In one embodiment, the fiber coupler comprises a microlens array or a general lens group.

[0018] In one embodiment, the laser ablation device further comprises a second laser light source connected to the fiber coupler, configured to emit a diagnostic laser to the fiber coupler.

[0019] The fiber coupler is further configured to couple the diagnostic laser into a fiber branch of the fiber array and transmit to the focusing microlens array.

[0020] The focusing microlens array focuses the diagnostic laser on the lesion tissue.

[0021] In one embodiment, the focusing microlens array is further configured to collect the laser signal and transmit the laser signal to the second laser light source through the fiber array and the fiber coupler.

[0022] The second laser light source separates the laser signal from the optical path.

[0023] In one embodiment, the second laser light source is further connected to a controller.

[0024] The controller is further configured to control the second laser light source to emit a diagnostic laser with a set parameter.

[0025] The second laser light source uploads the signal characteristic parameters of the laser signal to the controller.

[0026] The technical scheme of the above-mentioned embodiment divides the treatment laser into multiple laser beams, independently switches and controls the power of the laser beams, couples each laser beam into a fiber array, and focuses the laser beams on each focal point of the diseased tissue through a focusing microlens array for ablation treatment. The technical scheme can be used for ablation of various irregular diseased tissues, the ablation range is controllable, the ablation is complete, and the surrounding healthy tissues are not damaged. In particular, the technical scheme can be applied to ablation treatment of in-vivo diseased tissues, and the ablation range and precision can be controlled in a limited operation space.

[0027] Further, the biological tissue information diagnosis and ablation treatment can be performed on the diseased tissue in sequence, and the diagnosis and treatment are completed in one process, so that the treatment pain and injury of the patient are reduced, and in particular, the in-vivo tissue can be diagnosed and treated in real time and on line in a limited space.

[0028] Additional aspects and advantages of the present application will be set forth in part in the following description, will become apparent from the following description, or will be learned through practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0029] The above-mentioned and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0030] Figure 1 FIG. 1 is a structural schematic diagram of a laser ablation device according to an embodiment;

[0031] Figure 2 FIG. 2 is a schematic diagram of a branch laser interface according to an example;

[0032] Figure 3 FIG. 3 is a structural schematic diagram of a laser ablation device according to another embodiment;

[0033] Figure 4 FIG. 4 is a structural schematic diagram of a laser ablation device according to yet another embodiment. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below are examples for explaining the present application and should not be interpreted as limiting the present application.

[0035] Those skilled in the art can understand that, unless specifically stated otherwise, the singular forms "a", "an" and "the" as used herein include plural forms. It should be further understood that the use of the term "including" in the specification of the present application means that the features, integers, steps, operations, etc. described in the specification exist, but do not exclude the presence or addition of one or more other features, integers, steps, operations, etc.

[0036] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that the terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0037] The embodiment of the present application provides a laser ablation device which can accurately ablate various irregular lesion tissues and improve the treatment effect of laser ablation.

[0038] Reference Figure 1 As shown, Figure 1 is a structural schematic diagram of a laser ablation device in an embodiment, comprising: a first laser light source 01, a beam splitter 02, an optical modulator 03, a fiber coupler 04, a fiber array 05 and a focusing microlens array 06 connected in sequence through an optical path; wherein the beam splitter 02 is connected to the output end of the first laser light source 01, the optical modulator 03 is connected to the output end of the beam splitter 02, the fiber coupler 04 is connected to the output end of the optical modulator 03, and the fiber array 05 is connected between the fiber coupler 04 and the focusing microlens array 06.

[0039] In the ablation treatment, the first laser light source 01 is used to emit treatment laser, and the treatment laser can be pulse laser, for example; the beam splitter 02 divides the treatment laser into multiple branch lasers arranged in rows and columns, the optical modulator 03 independently controls the power of each branch laser, the fiber coupler 04 couples each branch laser into each fiber branch in the fiber array 05 one by one and transmits to the focusing microlens array 06, and the focusing microlenses of the focusing microlens array 06 focus each branch laser on the lesion tissue 10 in space for ablation treatment.

[0040] In an embodiment, the beam splitter 02 can divide the treatment laser into multiple branch lasers arranged in rows and columns n x n; correspondingly, the focusing microlenses in the focusing microlens array 06 adopt the arrangement in rows and columns n x n; wherein n≥2.

[0041] In an embodiment, the beam splitter 02 can include a fiber beam splitter or a spatial diffraction beam splitter.

[0042] In one embodiment, the optical modulator 03 is also used to control the switching of each branch laser, thereby determining which fiber optic branches to connect to the therapeutic laser for ablation treatment based on the shape of the lesion tissue 10. This allows the therapeutic laser to be matched to the irregular shape of the lesion tissue 10 for precise ablation treatment, avoiding damage to the surrounding healthy tissue. For example, the optical modulator 03 may include a spatial light modulator, a fiber optic acousto-optic modulator, or a two-dimensional spatial light modulator.

[0043] In one embodiment, the fiber optic coupler 04 may include a microlens array or a conventional lens group, etc.

[0044] In one embodiment, the fiber array 05 can be set to a length according to the transmission distance, and each branch laser is transmitted to the focusing microlens array 06, with each fiber branch corresponding to a focusing microlens in the focusing microlens array 06.

[0045] In one embodiment, a plurality of focusing microlenses with set optical parameters are arranged on the focusing microlens array 06. Before use, the focusing microlens array 06 is placed on the lesion tissue 10. When used, the therapeutic laser transmitted by the fiber optic branch is focused on the lesion tissue 10 for ablation treatment.

[0046] like Figure 2 As shown, Figure 2 This is a schematic diagram of an example split-laser interface; Figure 2 The left image shows the distribution shape of the irregular lesion tissue 10, and the right image shows the switch list of each laser branch controlled by the optical modulator 03. Each square represents a laser branch. ○ "×" indicates that the light path is connected, while "×" indicates that the light path is disconnected. Figure 2 It can be seen that when facing irregular lesion tissue, in order to avoid damage to the surrounding healthy tissue, the distribution shape of the lesion tissue 10 can be used to determine which branch lasers need to be turned on and which branch lasers need to be turned off. At the same time, the power of the branch lasers that need to be turned on can be adjusted by the optical modulator 03, so that high-precision ablation treatment can be performed to achieve better ablation treatment results.

[0047] The above-described embodiments are applicable to the ablation of various irregular lesions, with controllable ablation range and avoidance of damage to surrounding healthy tissues. In particular, when applied to the ablation treatment of lesions in vivo, the ablation range and ablation treatment effect can be precisely controlled within a limited operating space.

[0048] In one embodiment, such as Figure 3 As shown, Figure 3is another embodiment of the laser ablation device structure schematic diagram; the laser ablation device further comprises a controller 07 connected to the light modulator 03; wherein the controller 07 can control the light modulator 03 to switch control and power size regulation to each branch laser; further, the controller 07 can also be connected to the first laser light source 01, for controlling the first laser light source 01 to emit the treatment laser of the set parameter.

[0049] Reference Figure 4 As shown, Figure 4 is another embodiment of the laser ablation device structure schematic diagram, the laser ablation device of the embodiment, which can also include a second laser light source 08, the second laser light source 08 is connected to the fiber coupler 04; mainly can be before ablation treatment, the diagnosis of the lesion tissue 10, in use, the second laser light source 08 emits diagnostic laser, diagnostic laser enters the fiber coupler 04, the fiber coupler 04 couples the diagnostic laser into a light fiber branch in the fiber array 05, and transmits to the focusing microlens array 06, the focusing microlens array 06 focuses the diagnostic laser on the lesion tissue 10 through the corresponding focusing microlens, thereby generating laser signals with tissue characteristic information, which can be used for diagnosing the lesion tissue 10 to obtain the corresponding biological tissue information; exemplary, in diagnosis, diagnostic laser can be coupled into each light fiber branch in turn, and then diagnosed one by one, thereby obtaining the biological tissue information of the whole lesion tissue 10.

[0050] In one embodiment, as Figure 4 shown, the focusing microlens array 06 is also used to collect the diagnostic laser signals, and the laser signals are transmitted to the second laser light source 08 through the fiber array 05 and the fiber coupler 04; that is, the laser signals return to the second laser light source 08 by the original route; the second laser light source 08 can separate the laser signals from the light path; exemplary, the second laser light source 08 can separate the laser signals by a dichroic mirror arranged on the light path.

[0051] In one embodiment, as Figure 4 shown, the second laser light source 08 can also be connected to the controller 07; the controller 07 can control the second laser light source 08 to emit diagnostic laser of the set parameter; the second laser light source 08 can upload the signal characteristic parameters of the laser signals to the controller 07.

[0052] As described in the above embodiment, the lesion tissue can be diagnosed and ablated in sequence, and the diagnosis and treatment can be completed in one process, reducing the treatment pain and harm to the patient, especially being conducive to real-time online diagnosis of the in-vivo tissue in limited space, and controlling the ablation range and precision in limited operation space.

[0053] The above merely describes some embodiments of the present application, and it should be pointed out that, for those skilled in the art, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A laser ablation device, characterized in that, include: The first laser source (01) is used to emit therapeutic lasers; A beam splitter (02) is located at the output end of the first laser source (01) and is used to divide the therapeutic laser into multiple beams; wherein each beam is arranged in rows and columns. An optical modulator (03) is located at the output end of the beam splitter (02) and is used to independently control the power of each beam splitter. An optical fiber coupler (04) is located at the output end of the optical modulator (03) to couple each branch laser into the optical fiber branch of the optical fiber array (05). The fiber array (05) is connected between the fiber coupler (04) and the focusing microlens array (06). Each fiber branch corresponds to a focusing microlens in the focusing microlens array (06) and is used to transmit the laser from each branch to the focusing microlens array (06) through the fiber branch. A focusing microlens array (06) is used to focus the split laser onto the lesion tissue (10) in space for ablation treatment by focusing the microlenses.

2. The laser ablation device according to claim 1, characterized in that, Also includes: A controller (07) connected to the optical modulator (03) is used to control the optical modulator (03) to perform power regulation on each branch laser.

3. The laser ablation device according to claim 2, characterized in that, The controller (07) controls the optical modulator (03) to switch the split laser on and off.

4. The laser ablation device according to claim 2, characterized in that, The optical modulator (03) includes: a spatial optical modulator, an optical fiber acousto-optic modulator, or a two-dimensional spatial optical modulator.

5. The laser ablation device according to claim 2, characterized in that, The controller (07) is also connected to the first laser source (01); the controller (07) is also used to control the first laser source (01) to emit a therapeutic laser with set parameters.

6. The laser ablation device according to claim 1, characterized in that, The beam splitter (02) divides the therapeutic laser into rows and columns. n × n The layout features a multi-path laser; the focusing microlenses in the focusing microlens array (06) are arranged in rows and columns. n × n Layout; among which, n ≥2.

7. The laser ablation device according to claim 1, characterized in that, The fiber optic coupler (04) includes a microlens array or a conventional lens group.

8. The laser ablation device according to any one of claims 1-7, characterized in that, Also includes: A second laser source (08) connected to the fiber optic coupler (04) is used to emit diagnostic lasers to the fiber optic coupler (04). The fiber coupler (04) is also used to couple the diagnostic laser into one fiber branch of the fiber array (05) and transmit it to the focusing microlens array (06). The focusing microlens array (06) focuses the diagnostic laser onto the lesion tissue (10) to generate a laser signal with tissue characteristic information.

9. The laser ablation device according to claim 8, characterized in that, The focusing microlens array (06) is also used to collect the laser signal and transmit the laser signal to the second laser source (08) through the fiber array (05) and fiber coupler (04); The second laser source (08) separates the laser signal from the optical path.

10. The laser ablation device according to claim 8, characterized in that, The second laser source (08) is also connected to the controller (07); The controller (07) is also used to control the second laser source (08) to emit diagnostic lasers with set parameters; The second laser source (08) uploads the signal characteristic parameters of the laser signal to the controller (07).

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