Spherical medical laser optical fiber and medical laser instrument

Abstract

The utility model belongs to the technical field of medical laser optical fibers, and discloses a spherical medical laser optical fiber and a medical laser instrument. The spherical medical laser fiber comprises a spherical output end and a laser transmission section, one end of the laser transmission section is used for being connected with an optical fiber connector, the other end of the laser transmission section is connected with the spherical output end, and laser can be emitted into the laser transmission section from the optical fiber connector and emitted out of the spherical medical laser fiber from the spherical output end after being transmitted by the laser transmission section. In addition, the spherical output end enables the laser to have a light path form of low beam convergence and high beam divergence after the laser is emitted. Compared with the prior art in which large-area irradiation is realized by moving an optical fiber output end, the spherical output end is adopted, so that the irradiation area of the laser is larger, the irradiation is more uniform, and the dependence on the operation of a doctor is small. Meanwhile, the problem that the inner wall of the endoscope catheter is scratched is solved, damage to the inner wall of the endoscope catheter due to the fact that the optical fiber penetrates through the catheter is reduced, and the passing rate of the optical fiber can be increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical laser fiber technical field especially, relate to a kind of spherical medical laser fiber and medical laser instrument. BACKGROUND

[0002] The application of laser fiber in the medical field shows extensive prospect and huge development potential. With its high precision, low trauma and flexibility, laser fiber has become an important tool in surgical treatment, tumor treatment, cosmetic surgery, ophthalmic surgery and oral treatment and other medical fields. In surgical treatment, laser fiber can realize fine cutting, coagulation hemostasis and ablation of tissue, significantly improve the accuracy and safety of operation, and reduce the surgical trauma and recovery time of patients. In tumor treatment, laser fiber can accurately destroy tumor tissue through photodynamic therapy or direct laser irradiation, providing patients with a new and safer and more effective treatment option. In addition, laser fiber also plays an important role in cosmetic surgery, ophthalmic surgery and oral treatment, providing patients with safer and more effective treatment options and greatly improving the medical effect and patient's rehabilitation experience.

[0003] However, the existing laser fiber can only directly heat the tissue in front of the output end, limiting the operation, so the doctor needs to manually rotate or move the laser fiber to irradiate a larger area, and it is easy to appear uneven irradiation, which is not conducive to obtaining better medical effect.

[0004] Based on the above, there is an urgent need for a spherical medical laser fiber and medical laser instrument to solve the above technical problems. INVENTION CONTENTS

[0005] One object of the present utility model is to provide a spherical medical laser fiber that can easily irradiate a larger area and uniformly, to achieve better medical effect.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The spherical medical laser fiber comprises a spherical output end and a laser transmission section. One end of the laser transmission section is used to connect a fiber connector, and the other end of the laser transmission section is connected with the spherical output end. Laser can be injected into the laser transmission section from the fiber connector, transmitted through the laser transmission section, and emitted from the spherical output end of the spherical medical laser fiber, and

[0008] The spherical output end makes the laser have a light path form of near light convergence and far light divergence after emission.

[0009] As preferably, the spherical output end has a converging part with a spherical outer surface, so that the laser has a light path form of near light convergence and far light divergence after being emitted.

[0010] As preferably, the spherical output end includes a connecting part and a converging part, the converging part has a spherical outer surface, so that the laser has a light path form of near light convergence and far light divergence after being emitted, and the connecting part is connected between the converging part and the laser transmission segment.

[0011] As preferably, the spherical output end is made of single component quartz.

[0012] As preferably, the laser transmission segment includes a core and a cladding, the cladding is arranged outside the core, and the refractive index of the cladding is lower than that of the core.

[0013] As preferably, the laser transmission segment further includes a polyimide coating layer and a polytetrafluoroethylene protective layer, the cladding is arranged between the core and the polyimide coating layer, and the polyimide coating layer is arranged between the fluorine-doped quartz cladding and the polytetrafluoroethylene protective layer.

[0014] As preferably, the outer diameter of the polytetrafluoroethylene protective layer is greater than the diameter of the spherical output end.

[0015] As preferably, the optical fiber connector includes an SMA905 connector.

[0016] The spherical medical laser optical fiber has the advantages that compared with the prior art that uses a moving optical fiber output end to realize irradiation of a large area, the spherical output end can make the irradiation area of the laser larger and more uniform, and the operation of a doctor is less dependent.

[0017] Another object of the present application is to provide a medical laser device that can irradiate a large area conveniently and uniformly to achieve better medical treatment effect.

[0018] To achieve the above object, the present application adopts the following technical scheme.

[0019] The medical laser device includes the above spherical medical laser optical fiber.

[0020] The medical laser device has the advantages that compared with the prior art which realizes large-area irradiation by moving the output end of the optical fiber, the medical laser device adopts a spherical output end to make the irradiation area of the laser larger and more uniform, and the operation of the doctor is less dependent. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a front view of the spherical medical laser optical fiber according to the present application;

[0022] Figure 2 is a partial enlarged view of the spherical output end of the spherical medical laser optical fiber;

[0023] Figure 3 is a partial enlarged view of the spherical output end of another spherical medical laser optical fiber;

[0024] Figure 4 is a sectional view of the laser transmission section of the spherical medical laser optical fiber;

[0025] Figure 5 is an assembly sectional view of the spherical medical laser optical fiber and the optical fiber connector.

[0026] In the drawings:

[0027] 101, fiber core; 102, cladding; 103, polyimide coating layer; 104, polytetrafluoroethylene protective layer;

[0028] 11, laser transmission section; 12, spherical output end; 121, converging part; 122, connecting part;

[0029] 2, optical fiber connector. DETAILED DESCRIPTION

[0030] The present application will be further described below in conjunction with the drawings and examples. It should be understood that the specific examples described herein are intended to serve only as an explanation of the present application and not as a limitation thereof. In addition, it should be noted that only the parts related to the present application are shown in the drawings for the purpose of description.

[0031] In the description of the utility model, unless another definite provision and limitation, the term "link", "connect", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can pass through the intermediate medium indirectly connected, can be two element internal communication or two element mutual action relation.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0032] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features are not direct contact but contact through the additional feature between them.Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature.The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0033] In the description of the embodiment, the orientation or position relationship of the terms "on", "under", "right", "left" and the like is based on the orientation or position relationship shown in the drawing, only for the convenience of description and simplification operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0034] The following will be described according to the accompanying Figure 1 to the accompanying Figure 5 The utility model provides a spherical medical laser fiber and medical laser instrument are introduced.

[0035] As Figure 1 Shown in the embodiment, the spherical medical laser fiber mainly includes spherical output end 12 and laser transmission section 11, and the laser transmission section 11 can be bent and transmit laser, and the spherical output end 12 can emit laser in a specific light path form to realize better medical effect.

[0036] Specifically, as Figures 1 to 2As shown, one end of the laser transmission section 11 is used to connect the optical fiber connector 2, and the other end of the laser transmission section 11 is connected with the spherical output end 12. Laser can be emitted from the optical fiber connector 2 into the laser transmission section 11, and then emitted from the spherical output end 12 after transmission through the laser transmission section 11. The diameter of the laser transmission section 11 is smaller than the diameter of the spherical output end 12. The spherical output end 12 makes the laser have a light path shape of near light convergence and far light divergence after emission.

[0037] As shown in the drawings, Figure 2 In this embodiment, the spherical output end 12 is directly formed by burning one end of the laser transmission section 11. In the case of direct burning, the spherical output end 12 is a mixture of core and cladding, and there is no clear boundary with the laser transmission section 11. In other embodiments, the protective layer and coating layer at one end of the laser transmission section 11 can be removed before burning.

[0038] As shown in the drawings, Figure 3 In other embodiments, the spherical output end 12 is a single-component pure quartz body fused to one end of the laser transmission section 11. The spherical output end 12 can be fused to the laser transmission section 11 first and then burned, or burned first and then fused to the laser transmission section 11.

[0039] In use, by controlling the distance between the spherical output end 12 and the ablated tissue, the irradiation range of the laser can be controlled. For example, when a smaller area needs to be irradiated, the distance between the spherical output end 12 and the ablated tissue can be reduced so that the light path convergence is located on the surface of the ablated tissue; when a larger area needs to be irradiated, the distance between the spherical output end 12 and the ablated tissue can be increased so that the light path divergence is located on the surface of the ablated tissue.

[0040] Compared with the prior art that uses a moving optical fiber output end to achieve a larger irradiation area, the spherical output end 12 can make the irradiation area of the laser larger and more uniform and stable, and the dependence on the doctor's operation is small. At the same time, it also solves the problem of scratching the inner wall of the endoscope catheter, which is more conducive to reducing the damage to the inner wall of the endoscope catheter caused by the optical fiber passing through the catheter, and can improve the passing rate of the optical fiber.

[0041] Specifically, as shown in the drawings, Figure 2 In this embodiment, the spherical output end 12 has a convergence part 121 with a spherical outer surface. When the laser passes through the convergence part 121, the direction of the laser changes so that the laser has a light path shape of near light convergence and far light divergence after emission.

[0042] Optionally, as shown in the drawings, Figure 3As shown, in some embodiments, the spherical output end 12 includes a connecting portion 122 and a converging portion 121, the converging portion 121 has an outer surface in a spherical shape, so that the laser has a light path form of near light convergence and far light divergence after being emitted. The connecting portion 122 is heat-fused between the converging portion 121 and the laser transmission segment 11, which can play a role in transmitting the laser.

[0043] More specifically, in the present embodiment, the spherical output end 12 is made of a single component of quartz material, which has the characteristics of high transparency and low loss, and can greatly reduce the propagation loss of the laser. The laser transmission segment 11 includes a core 101 and a cladding 102, the cladding 102 is arranged outside the core 101, and the refractive index of the cladding 102 is lower than that of the core 101, thereby forming total reflection. Exemplarily, a germanium-doped core 101 can be used in combination with a pure cladding 102, or a pure core 101 can be used in combination with a fluorine-doped cladding 102, or a germanium-doped core 101 can be used in combination with a fluorine-doped cladding 102, all of which can make the refractive index of the cladding 102 lower than that of the core 101, and are also within the scope to be protected by the present application. Preferably, the cladding 102 is made of fluorine-doped quartz, which has low friction characteristics that help the optical fiber to move smoothly in the catheter or other interventional devices, reducing damage and resistance caused by friction. Moreover, the non-adhesion of fluorine-doped quartz can prevent the optical fiber surface from adhering to blood, tissue or other biological substances, thereby maintaining the cleanliness and functional integrity of the optical fiber. At the same time, fluorine-doped quartz has good biocompatibility, which can reduce adverse reactions between the optical fiber and human tissues, ensuring the safety and effectiveness of the surgical process.

[0044] As shown, Figure 4 In the present embodiment, the laser transmission segment 11 also includes a polyimide coating layer 103 and a polytetrafluoroethylene protective layer 104, the cladding 102 is arranged between the core 101 and the polyimide coating layer 103, and the polyimide coating layer 103 is arranged between the cladding 102 and the polytetrafluoroethylene protective layer 104. Polyimide is a high molecular material with extremely high heat resistance, which can maintain stable performance in high temperature environment. In medical optical fibers, the polyimide coating layer 103 can effectively resist the damage of high temperature environment to the optical fiber, ensuring the stability and reliability of the optical fiber in high temperature surgery or treatment process. Moreover, the polyimide coating layer 103 has excellent mechanical properties such as high strength and high modulus. This makes the optical fiber resistant to impact and extrusion of various external forces during use, thereby improving the durability and service life of the optical fiber, and helping to ensure the stability and safety of the optical fiber during surgery or treatment.

[0045] Further, the outer diameter of the polytetrafluoroethylene protective layer 104 is larger than the diameter of the spherical output end 12 to improve the passability when the spherical medical laser fiber is inserted into an endoscope or the like. For example, in the present embodiment, the diameter of the core 101 is 200-1000 μm, the diameter of the cladding layer 102 is 240-1200 μm, the diameter of the polytetrafluoroethylene protective layer 104 is 375-1450 μm, the spherical output end 12 is formed by fusion of the core 101 after removal of the cladding layer 102 (or direct fusion of a single component quartz body, as shown in Figure 3

[0046] Preferably, the optical fiber connector 2 comprises an SMA905 connector. The SMA905 connector is made of metal material, and has higher power carrying capacity compared with other types of interfaces. In addition, the SMA905 connector adopts a suspended structure, and is easy to install and connect, without the need for complex operation and maintenance.

[0047] The utility model also provides a kind of medical laser instrument, and the medical laser instrument includes the spherical medical fiber described above.Compared with the way of moving fiber output end in prior art to realize larger area irradiation, the medical laser instrument uses spherical output end 12 to make the irradiation area of laser larger, make irradiation more uniform, and the operation dependence to doctor is small.Meanwhile, it also solves the problem of scratching the inner wall of endoscope catheter, is more conducive to reducing the damage of endoscope catheter inner wall caused by fiber through pipe, and can improve fiber pass rate.

[0048] Obviously, the above embodiment of the utility model is only for clear illustration of the utility model, and is not the limitation of the embodiment of the utility model. For ordinary skilled person in the art, can make various obvious changes, re-adjustment and replacement without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all embodiments. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.​

Claims

1. A medical laser fiber having a spherical shape, characterized in that, The spherical medical laser fiber comprises a spherical output end (12) and a laser transmission section (11), one end of the laser transmission section (11) is used for connecting a fiber connector (2), the other end of the laser transmission section (11) is connected with the spherical output end (12), laser can be emitted into the laser transmission section (11) from the fiber connector (2), and the laser is emitted out of the spherical medical laser fiber from the spherical output end (12) after being transmitted through the laser transmission section (11), and The spherical output end (12) makes the laser have a light path form of near light convergence and far light divergence after being emitted, and the spherical output end (12) is configured to make the light path convergence position on the surface of the ablated tissue and irradiate with a small area or make the light path divergence position on the surface of the ablated tissue and irradiate with a large area by controlling the distance between the spherical output end (12) and the ablated tissue.

2. The spherical medical laser fiber according to claim 1, wherein The spherical output end (12) has a convergence part (121) with a spherical outer surface, so that the laser has a light path form of near light convergence and far light divergence after being emitted.

3. The spherical medical laser fiber according to claim 1, wherein The spherical output end (12) comprises a connection part (122) and a convergence part (121), the convergence part (121) has a spherical outer surface, so that the laser has a light path form of near light convergence and far light divergence after being emitted, and the connection part (122) is connected between the convergence part (121) and the laser transmission section (11).

4. The spherical medical laser fiber according to claim 2 or 3, wherein The spherical output end (12) is made of single-component quartz.

5. The spherical medical laser fiber according to claim 1, wherein The laser transmission section (11) comprises a core (101) and a cladding (102), the cladding (102) is arranged outside the core (101), and the refractive index of the cladding (102) is lower than the refractive index of the core (101).

6. The spherical medical laser fiber according to claim 5, wherein The laser transmission section (11) further comprises a polyimide coating layer (103) and a polytetrafluoroethylene protective layer (104), the cladding (102) is arranged between the core (101) and the polyimide coating layer (103), and the polyimide coating layer (103) is arranged between the cladding (102) and the polytetrafluoroethylene protective layer (104).

7. The spherical medical laser fiber according to claim 6, wherein The outer diameter of the polytetrafluoroethylene protective layer (104) is greater than the diameter of the spherical output end (12).

8. The spherical medical laser fiber according to claim 7, wherein The diameter of the spherical output end (12) is smaller than the diameter of the polytetrafluoroethylene protective layer (104).

9. The medical laser fiber according to claim 1, characterized in that the fiber connector (2) comprises an SMA 905 connector.

10. A medical laser device, characterized by A medical laser system comprising a medical laser fiber according to any one of claims 1-9.

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