Optical fiber catheter and laser ablation device

Abstract

The application discloses a kind of optical fiber catheter and laser ablation device.The application is by being arranged the core diameter of first optical fiber is greater than second optical fiber, so that multiple second optical fibers have greater bending radius relative to first optical fiber, and connector is set at the end of first optical fiber away from multiple second optical fibers, handle is connected on multiple second optical fibers, and is spaced from connector, so that multiple second optical fibers passing through handle and away from the end of connector are optical fiber portions entering patient's body and have greater bending radius, multiple second optical fibers between connector and handle, or first optical fiber and multiple second optical fibers are optical fiber portions not entering patient's body, since at least part is multiple second optical fibers, so also have greater bending radius, so as to meet the bending of the optical fiber unit portion entering patient's body by surgical operator, and then reduce the operation influence to surgical operator, and thereby improve the efficiency of operation.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to an optical fiber catheter and a laser ablation device. Background Technology

[0002] For symptoms such as chronic occlusive lesions, thrombosis, and coexisting atherosclerotic plaques and calcified tissue lesions in blood vessels, arterial interventional therapy is generally used. This involves inserting a catheter into the blood vessel and using the principle of laser ablation to eliminate plaques and proliferative tissue, thereby clearing the blocked or narrowed blood vessels and achieving safe treatment without damaging the blood vessels.

[0003] Laser treatment of biological tissues produces a series of biological effects, such as photochemical, thermal, and mechanical effects.

[0004] 355nm ultraviolet lasers possess high photon energy, capable of directly disrupting the chemical bonds between molecules in biological tissues and breaking down large molecules into small fragments. These tiny particles are then absorbed by the body's metabolism, thus preventing microvascular blockage. When using 355nm ultraviolet lasers to ablate thrombi and other diseased tissues, the short pulse width (<10ns) effectively enhances the ablation effect, with photochemical effects playing a major role and minimal thermal effects, resulting in minimal temperature rise in the tissue.

[0005] Current laser catheters include a proximal coupler to align the optical fiber within the catheter with the laser unit, allowing the laser emitted from the unit to be transmitted through the fiber and exit from the distal end of the catheter for treatment of the lesion. For surgical operators, during laser ablation procedures, the curvature of arteries within the body necessitates adjustments to the fiber optic catheter to ensure smooth movement of the portion entering the patient's body. Simultaneously, the portion of the fiber optic catheter outside the patient's body (the part coupling with the laser unit and not entering the patient's body) needs to be bent to match the portion entering the patient's body. In existing technology, the portion of the fiber optic catheter not entering the patient's body has a larger core diameter, resulting in a larger bending radius. This makes it difficult for surgical operators to bend during the procedure, thus affecting their operation and leading to lower surgical efficiency. Utility Model Content

[0006] The main objective of this application is to provide a fiber optic catheter and a laser ablation device to solve the problem of the large bending radius of the fiber optic catheter portion that does not enter the patient's body in the prior art.

[0007] On one hand, this application provides an optical fiber conduit, the optical fiber conduit comprising:

[0008] An optical fiber unit, comprising a first optical fiber and multiple second optical fibers, wherein the multiple second optical fibers are respectively connected to the same end of the first optical fiber, and the core diameter of the first optical fiber is larger than the core diameter of any of the second optical fibers.

[0009] A connector, the connector being used to couple one end of the first optical fiber away from the plurality of second optical fibers to the laser host; and

[0010] A handle, which is fitted onto a plurality of second optical fibers and spaced apart from the connector.

[0011] Furthermore, the optical fiber unit includes a first segment, a second segment, a third segment, and a fourth segment arranged sequentially. The first segment is located inside the connector, the second segment is located between the connector and the handle, the third segment is located inside the handle, and the fourth segment is located outside the handle and away from the connector.

[0012] The first segment includes the first optical fiber and multiple second optical fibers connected to the first optical fiber, and the second segment, the third segment and the fourth segment each include multiple second optical fibers.

[0013] Furthermore, the connector includes a housing and a support member, the support member being disposed through the housing and having a support groove, the first segment being disposed within the support groove, and the connection point between the first optical fiber and multiple second optical fibers not contacting the housing.

[0014] Furthermore, the housing includes a first end and a second end opposite to each other, the support member extends out of the housing at the first end to form a plug-in portion, the end of the first optical fiber away from the plurality of second optical fibers extends into the plug-in portion, and the connection point of the first optical fiber and the plurality of second optical fibers is close to the second end.

[0015] The outer side of the shell has an anti-slip portion, which is located near the first end.

[0016] Furthermore, the housing includes a first housing and a second housing, the support member is disposed on the second housing, and the opening of the support groove faces the first housing;

[0017] The first shell has a first reinforcing rib on its inner surface facing the support member. The first reinforcing rib is close to the connection point between the first optical fiber and the multiple second optical fibers, but does not contact the connection point between the first optical fiber and the multiple second optical fibers.

[0018] Furthermore, the connector also includes a first sleeve, a fixing plate, and a fixing member. The first sleeve is sleeved on multiple second optical fibers and is close to the connection between the first optical fiber and the multiple second optical fibers. The first sleeve extends outward from the second end to form the support groove. The fixing plate limits the first sleeve within the support groove through the fixing member.

[0019] Furthermore, the connector also includes a second sleeve, which is sleeved on multiple second optical fibers and is limited at the second end of the housing by the first housing and the second housing;

[0020] The second sleeve is at least partially fitted onto the first sleeve and extends out of the housing at the second end.

[0021] Furthermore, the first shell is constructed to form a snap-fit ​​structure, the snap-fit ​​structure extending from the first end in a direction away from the second end, and the snap-fit ​​structure includes an elastic arm, a snap-fit ​​portion and a pressing portion, the snap-fit ​​portion being connected to the elastic arm and away from the second end, and the pressing portion being connected to the side of the elastic arm away from the second shell and close to the first end;

[0022] The first shell has a second reinforcing rib on its inner surface facing the support member, and the second reinforcing rib is close to the snap-fit ​​structure.

[0023] Furthermore, the connection point between the first optical fiber and the plurality of second optical fibers is located between the connector and the handle.

[0024] Furthermore, the optical fiber conduit also includes a first connecting tube, a second connecting tube, and a guide wire. The first connecting tube is connected between the connector and the handle, the second connecting tube is connected to the end of the handle away from the first connecting tube, and the guide wire passes through the handle and the second connecting tube.

[0025] The optical fiber unit is sequentially inserted through the connector, the first connecting tube, the handle, and the second connecting tube.

[0026] Furthermore, the optical fiber unit also includes a glass tube, in which all the second optical fibers are sleeved and fused with the first optical fibers to form the optical fiber unit.

[0027] Furthermore, the optical fiber unit also includes a glass tube, in which all the second optical fibers are sleeved, and after being simultaneously fused and tapered with the glass tube, they are fused with the first optical fibers to form the optical fiber unit.

[0028] On the other hand, this application also provides a laser ablation device, the laser ablation device comprising the fiber optic conduit described in any of the preceding claims; and

[0029] A laser host is connected to the fiber optic conduit, and the laser host includes a laser module and a control module. The control module is used to control the laser module to output a laser beam to the fiber optic conduit.

[0030] In the fiber optic conduit of this application, by connecting multiple second optical fibers of the fiber optic unit to the same end of the first optical fiber, and wherein the core diameter of the first optical fiber is larger than the core diameter of any of the second optical fibers, the multiple second optical fibers have a larger bending radius relative to the first optical fiber. Furthermore, by placing the connector at the end of the first optical fiber away from the multiple second optical fibers, the end of the first optical fiber away from the multiple second optical fibers can be coupled to the laser host through the connector. This allows the laser output from the laser host to be transmitted through the first optical fiber to each of the second optical fibers and output from the end of each of the second optical fibers away from the first optical fiber, for laser treatment of the lesion site. The handle is also connected to... Multiple second optical fibers are spaced apart from the connector, such that the multiple second optical fibers passing through the handle and away from the connector are the fiber portion entering the patient's body and have a large bending radius to accommodate the complex curvature of arteries. Multiple second optical fibers between the connector and the handle, or the first optical fiber and multiple second optical fibers, are the fiber portion not entering the patient's body. This portion of the fiber is at least partially composed of multiple second optical fibers and therefore also has a large bending radius. This allows for adaptive bending by the surgical operator when bending the fiber unit portion entering the patient's body, thereby reducing the impact on the surgical operator's operation and improving surgical efficiency and shortening surgical time. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0032] Figure 1 This is a schematic diagram of an optical fiber guide tube in one embodiment of this application.

[0033] Figure 2 Reference is made to one embodiment disclosed in this application. Figure 1 A schematic diagram of the optical fiber unit is shown.

[0034] Figure 3 This is a schematic diagram of a connector in one embodiment of the present application.

[0035] Figure 4 This is an exploded view of the connector in one embodiment of this application.

[0036] Figure 5 This is a schematic diagram of a connector pointing from the first shell to the second shell in one embodiment of this application, where the first shell is hidden.

[0037] Figure 6 This is a schematic diagram of the inner surface of the first shell in one embodiment disclosed in this application.

[0038] Figure 7 This is a schematic diagram of the inner surface of the second shell in one embodiment disclosed in this application.

[0039] Figure 8 This is a schematic diagram of the first segment of an optical fiber unit in one embodiment of this application.

[0040] Figure 9 for Figure 8 A cross-sectional view along the A-A1 direction.

[0041] Figure 10 for Figure 8 A cross-sectional view along the B-B1 direction.

[0042] Figure 11 for Figure 8 A cross-sectional view along the C-C1 direction.

[0043] Fiber optic conduit 100, fiber optic unit 10, first fiber optic cable 11, second fiber optic cable 12, first segment 13, first sub-segment 131, second sub-segment 132, third sub-segment 133, second segment 14, third segment 15, fourth segment 16, input end 17, output end 18, connector 20, housing 21, first end 211, second end 212, anti-slip part 213, rib 214, first shell 215, first reinforcing rib 2151, snap-fit Structure 2152, elastic arm 2153, snap-fit ​​part 2154, pressing part 2155, second reinforcing rib 2156, second shell 216, support member 22, support groove 221, plug-in part 222, cover plate 23, glass tube 24, first sleeve 251, second sleeve 252, fixing plate 26, fixing member 27, fixing pressure plate 28, radio frequency chip 29, handle 30, guide wire 40, first connecting tube 50, second connecting tube 60. Detailed Implementation

[0044] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0046] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0047] Please see Figure 1-2 As shown, in one aspect, this application provides an optical fiber conduit 100, which is used to connect to a laser module and transmit the laser beam emitted by the laser module, so that the laser beam output from the optical fiber conduit 100 can perform laser treatment on the lesion.

[0048] Further, the fiber optic catheter 100 includes a fiber optic unit 10, a connector 20, and a handle 30. The fiber optic unit 10 is respectively inserted through the connector 20 and the handle 30. The fiber optic unit 10 includes an input end 17 and an output end 18. The input end 17 is located inside the connector 20, and the output end 18 is located outside the handle 30 and away from the connector 20. The connector 20 can be used to connect the fiber optic unit 10 to the laser module. The handle 30 is used for the fiber optic unit 10 to pass through and for a guidewire 40 to pass through. The guidewire 40 is used to guide the output end 18 into the patient's body and move to the lesion location.

[0049] Please refer to Figure 2As shown, the optical fiber unit 10 includes a first optical fiber 11 and multiple second optical fibers 12. By connecting the multiple second optical fibers 12 of the optical fiber unit 10 to the same end of the first optical fiber 11, and ensuring that the core diameter of the first optical fiber 11 is larger than the core diameter of any of the second optical fibers 12, the second optical fibers 12 have a larger bending radius relative to the first optical fiber 11. Furthermore, by placing the connector 20 at the end of the first optical fiber 11 away from the multiple second optical fibers 12, the end of the first optical fiber 11 away from the multiple second optical fibers 12 can be coupled to the laser host through the connector 20. This allows the laser output from the laser host to be transmitted via the first optical fiber 11 to each of the second optical fibers 12, and output from the end of each second optical fiber 12 away from the first optical fiber 11, for laser treatment of the lesion. And by connecting the handle 30 to... Multiple second optical fibers 12 are spaced apart from the connector 20, such that the multiple second optical fibers 12 passing through the handle 30 and away from the connector 20 are the optical fiber portions entering the patient's body, and have a large bending radius to accommodate the complex curvature of arteries. Alternatively, multiple second optical fibers 12 located between the connector 20 and the handle 30, or the first optical fiber 11 and multiple second optical fibers 12, are optical fiber portions that do not enter the patient's body. This portion of the optical fiber is at least partially composed of multiple second optical fibers 12, and therefore also has a large bending radius. This allows for adaptive bending when the surgical operator bends the portion of the optical fiber unit 10 entering the patient's body, thereby reducing the impact on the surgical operator's operation, improving surgical efficiency, and shortening surgical time.

[0050] In addition, while effectively increasing the bending radius of the fiber optic portion that does not enter the patient's body, the length of this portion of the fiber optic cable can be appropriately shortened as needed, thereby reducing the overall cost of the fiber optic catheter 100.

[0051] In the embodiments of this application, please refer to Figure 1-2 As shown, the fiber optic unit 10 includes a first segment 13, a second segment 14, a third segment 15, and a fourth segment 16 connected in sequence. The first segment 13 is... Figure 2 The portion to the left of the dashed line L2, and the first segment 13 is located within the connector 20, while the second segment 14 is... Figure 2 The portion between the dashed lines L2 and L3, and the second segment 14 located between the connector 20 and the handle 30, the third segment 15 is... Figure 2 The portion between the dashed lines L3 and L4, and the third segment 15 is located within the handle 30, while the fourth segment 16 is... Figure 2The portion to the left of the dashed line L4, and the fourth segment 16 is located outside the handle 30 and away from the connector 20.

[0052] The first segment 13 includes the first optical fiber 11 and multiple second optical fibers 12 connected to the first optical fiber 11. Therefore, the connection between the first optical fiber 11 and the multiple second optical fibers 12 is located within the connector 20, thereby effectively protecting the connection and reducing the risk of bending and breakage. In addition, the second segment 14, the third segment 15, and the fourth segment 16 each include multiple second optical fibers 12. Therefore, the second segment 14 can have a large bending radius, which can maximize the bending requirements of the surgical personnel for the second segment 14.

[0053] In the embodiments of this application, please refer to Figure 3-7 As shown, the connector 20 includes a housing 21 and a support member 22. The support member 22 passes through the housing 21 and has a support groove 221. The first segment 13 is disposed in the support groove 221, thereby effectively protecting the connection point using the support groove 221. Furthermore, the connection point between the first optical fiber 11 and the multiple second optical fibers 12 does not contact the housing 21, thus effectively preventing the connection point from being squeezed when the operator holds the connector 20 and inserts it into or pulls it out of the laser host, thereby effectively extending the service life of the optical fiber conduit 100.

[0054] In an embodiment of this application, the housing 21 includes a first end 211 and a second end 212 opposite to each other. A portion of the support member 22 is disposed within the housing 21, and another portion of the support member 22 extends out of the housing 21 from the first end 211 to form a plug-in portion 222. The support groove 221 extends to the plug-in portion 222. The end of the first optical fiber 11 away from the plurality of second optical fibers 12 extends into the plug-in portion 222. After the plug-in portion 222 is plugged into the laser host, the laser emitted by the laser host will enter the first optical fiber 11 from the end of the first optical fiber 11 away from the plurality of second optical fibers 12, and will be transmitted to the plurality of second optical fibers 12 at the connection point of the first optical fiber 11 and the plurality of second optical fibers 12, thereby realizing laser transmission from a single fiber (i.e., the first optical fiber 11) to multiple fibers (i.e., multiple second optical fibers 12).

[0055] Furthermore, by using the end of the single first optical fiber 11 furthest from the multiple second optical fibers 12 as the input end 17, the laser output from the laser host can be effectively received by the first optical fiber 11. This improves the coupling efficiency of the laser emitted by the laser host entering the optical fiber unit 10 and transmits it to the multiple second optical fibers 12 through the first optical fiber 11. This avoids the laser output from the laser host being directly transmitted to the multiple second optical fibers 12, thereby preventing damage to the multiple second optical fibers 12. This effectively improves the service life and transmission efficiency of the optical fiber unit 10, as well as the stability and service life of the optical fiber guide tube 100.

[0056] Furthermore, the support plate is made of metal and the housing 21 is made of plastic. Therefore, the support plate has higher structural strength than the housing 21, so that the support plate can dissipate the heat generated by the first segment 13 during operation.

[0057] Furthermore, the connection point between the first optical fiber 11 and the multiple second optical fibers 12 is close to the second end 212, and the outer side of the housing 21 is formed with an anti-slip part 213. The anti-slip part 213 is close to the first end 211. The anti-slip part 213 is used for the operator to hold the connector 20 to insert the connector 20 into the laser host or to pull the connector 20 out of the laser host.

[0058] Furthermore, the outer side of the housing 21 is provided with a plurality of protruding ribs 214 in the region near the first end 211. The plurality of protruding ribs 214 are spaced apart on the housing 21 and together with the corresponding housing 21 sections, form the anti-slip portion 213. By providing the anti-slip portion 213, the stability of the connector 20 when the operator holds it for insertion and removal operations can be effectively increased. Furthermore, by providing the protruding ribs 214, the structural strength of the housing 21 can be effectively improved, thereby reducing the degree of deformation of the housing 21 when the operator holds it, and thus avoiding the phenomenon of breakage at the connection point due to compression caused by deformation of the housing 21.

[0059] In addition, by setting the anti-slip part 213 close to the first end 211 and setting the connection point close to the second end 212, the connection point can be further effectively protected by the misalignment of the anti-slip part 213 and the connection point.

[0060] In the embodiments of this application, please refer to Figure 3-7As shown, the housing 21 includes a first housing 215 and a second housing 216. The support member 22 is disposed on the second housing 216, and the groove of the support groove 221 faces the first housing 215, so that the first segment 13 can be easily assembled into the support groove 221 along the groove, thereby effectively improving the efficiency of assembling the first segment 13 onto the connector 20.

[0061] The first shell 215 has a first reinforcing rib 2151 on the inner surface facing the support member 22. The first reinforcing rib 2151 is close to the connection point of the first optical fiber 11 and the multiple second optical fibers 12, but does not contact the connection point. After the first shell 215 and the second shell 216 are assembled together, the first reinforcing rib 2151 can abut against the support member 22 and the second shell 216, so that when the shell 21 is held, the force applied to the shell 21 will not cause significant deformation of the first shell 215 and the second shell 216, thus further protecting the connection point.

[0062] Further, please refer to Figure 4-5 As shown, the connector 20 also includes a cover plate 23, which covers the insertion portion 222 and is inserted into the laser host together with the insertion portion 222. By providing the cover plate 23, the first optical fiber 11 extending from the first end 211 of the housing 21 can be effectively protected in conjunction with the support plate, thereby preventing this part of the first optical fiber 11 from being broken by impact during insertion / removal or when not connected to the laser host.

[0063] Furthermore, in an embodiment of this application, the optical fiber unit 10 further includes a glass tube 24, in which all the second optical fibers 12 are fitted inside the glass tube 24 and fused with the first optical fibers 11 to form the optical fiber unit 10. Therefore, it is unnecessary to taper the second optical fibers 12 and the glass tube 24.

[0064] In an embodiment of this application, the optical fiber unit further includes a glass tube 24, all of the second optical fibers 12 are sleeved inside the glass tube 24, and are fused and tapered synchronously with the glass tube 24 and then fused with the first optical fiber 11 to form the optical fiber unit 10.

[0065] It should be noted that since the first optical fiber 11 and multiple second optical fibers 12 are interconnected by fusion splicing, and in order to allow multiple second optical fibers 12 to be fused to the same end of the first optical fiber 11, it is usually necessary to fused and taper multiple second optical fibers 12. This allows each cylindrical second optical fiber 12 to gradually deform and adaptively shape under the mutual restraint of adjacent second optical fibers 12 and the glass tube 24, as the tension applied by the taper decreases, until the gap between adjacent second optical fibers 12 becomes smaller. This allows a higher proportion of the laser transmitted by the first optical fiber 11 to be transmitted to each of the second optical fibers 12, thereby effectively improving the efficiency of laser transmission and reducing the proportion of laser loss from the gap between adjacent second optical fibers 12, and thus reducing the high heat phenomenon caused by the loss of laser between multiple second optical fibers 12.

[0066] Therefore, the fabrication process of fusing multiple second optical fibers 12 to the same end of the first optical fiber 11 is as follows:

[0067] Step 1: Remove the coating and protective layer from the portion adjacent to the fusion splice of the first optical fiber 11 and multiple second optical fibers 12. Therefore, this portion of the first optical fiber 11 retains only the core and cladding, with the cladding covering the outer periphery of the core. Also, remove the coating and protective layer from the portion adjacent to the fusion splice of the multiple second optical fibers 12 and the first optical fiber 11 respectively. Therefore, this portion of the second optical fiber 12 retains only its own core and cladding, with each cladding covering the outer periphery of its corresponding core.

[0068] The second step involves placing the glass tube 24 around the periphery of multiple second optical fibers 12, where the coating and protective layers have been removed, and extending the glass tube 24 to the periphery of the multiple second optical fibers 12 where the coating and protective layers have not been removed.

[0069] Step 3: The glass tube 24 and the multiple second optical fibers 12 located inside the glass tube 24 are heated, melted and tapered, so that the spacing between adjacent second optical fibers 12 located inside the glass tube 24 gradually decreases during the tapering process, so that the overall cross-section of the multiple second optical fibers 12 after tapering is basically the same as the cross-section of the first optical fiber 11.

[0070] Step 4: Cut and polish the tapered second optical fibers 12 and the glass tube 24 to obtain a flat end face for fusion with the first optical fiber 11.

[0071] Step 5: The first optical fiber 11 is fused with multiple second optical fibers 12 having flat end faces to obtain the optical fiber unit 10.

[0072] It should be noted that you should refer to [link / reference]. Figure 8-11 As shown, for the tapered structure of multiple second optical fibers 12, the multiple second optical fibers 12 after being stretched can be divided into a first sub-segment 131, a second sub-segment 132, and a third sub-segment 133 connected in sequence. The overall outer diameter of the first sub-segment 131 is basically consistent, therefore the first sub-segment 131 is a constant diameter segment, and the spacing between each of the second optical fibers 12 corresponding to the first sub-segment 131 is the smallest; the overall outer diameter of the second sub-segment 132 gradually increases along the direction from the first sub-segment 131 to the third sub-segment 133, therefore the second sub-segment 132 is a variable diameter segment, and the spacing between each of the second optical fibers 12 corresponding to the second sub-segment 132 gradually increases along the direction towards the third sub-segment 133; the diameters at the junctions of the second sub-segment 132 and the first sub-segment 131 are equal, the diameters at the junctions of the second sub-segment 132 and the third sub-segment 133 are equal, and the overall outer diameter of the third sub-segment 133 is basically consistent, therefore the third sub-segment 133 is a constant diameter segment, and the spacing between each of the second optical fibers 12 corresponding to the third sub-segment 133 is relatively large.

[0073] In the embodiments of this application, please refer to Figure 2 as well as Figure 8 As shown, the first sub-segment 131, the second sub-segment 132, the third sub-segment 133, and the first optical fiber 11 are all located within the connector 20. Therefore, the first sub-segment 131, the second sub-segment 132, the third sub-segment 133, and the first optical fiber 11 together form the first segment 13 of the optical fiber unit 10, and the first sub-segment 131, the second sub-segment 132, the third sub-segment 133, the second segment 14, the third segment 15, and the fourth segment 16 together form the second optical fiber 12.

[0074] In the embodiments of this application, please refer to Figure 3-5 As shown, the connector 20 further includes a first sleeve 251, a fixing piece 26, and a fixing member 27. The first sleeve 251 is sleeved on multiple second optical fibers 12 and is close to the connection between the first optical fiber 11 and the multiple second optical fibers 12. The first sleeve 251 extends outward from the second end 212 to form the support groove 221. The fixing piece 26 limits the first sleeve 251 within the support groove 221 through the fixing member 27.

[0075] The first sleeve 251 can be fitted onto the outer periphery of the third segment 133, and when fixed by the fastener 27 and the fixing piece 26, it can effectively limit the portion of the first segment 13 near the second end 212 within the support groove 221.

[0076] The connector 20 further includes a second sleeve 252. The second sleeve 252 is fitted onto the plurality of second optical fibers 12 and is limited at the second end 212 of the housing 21 by the first shell 215 and the second shell 216. The second sleeve 252 is at least partially fitted onto the first sleeve 251 and extends out of the housing 21 at the second end 212. The second sleeve 252 is made of a material with a certain degree of elasticity, such as silicone or rubber.

[0077] By setting the second sleeve 252, the connection between the first segment 13 and the second segment 14 (i.e., the position where multiple second optical fibers 12 extend out of the connector 20 at the second end 212) can be effectively protected, thereby avoiding rigid contact between the multiple second optical fibers 12 at the position where they extend out of the connector 20 and the housing 21, which would cause the second optical fibers 12 to be broken.

[0078] Furthermore, the connector 20 also includes a fixing plate 28, which is disposed on the insertion part 222 and fixes the first optical fiber 11 located in the insertion part 222 in the support groove 221 by adhesive bonding.

[0079] Furthermore, the connector 20 also includes an RF chip 29, which is disposed on the plug portion 222 and is used to identify the specifications and other parameter information of the optical fiber conduit 100.

[0080] Further, please refer to Figure 4 As shown, the first housing 215 is configured to have a snap-fit ​​structure 2152, which extends from the first end 211 in a direction away from the second end 212 and is used to limit the connector 20 to be connected to the laser host.

[0081] The snap-fit ​​structure 2152 includes an elastic arm 2153, a snap-fit ​​portion 2154, and a pressing portion 2155. The snap-fit ​​portion 2154 is connected to the elastic arm 2153 and is located away from the second end 212. The pressing portion 2155 is connected to the side of the elastic arm 2153 away from the second housing 216 and close to the first end 211. By pressing the pressing portion 2155, the elastic arm 2153 can be driven to move closer to the cover plate 23, thereby causing the snap-fit ​​portion 2154 to disengage from the corresponding slot on the laser host, and thus the connector 20 can be pulled out from the laser host.

[0082] Please refer to Figure 6-7As shown, the inner surface of the first shell 215 facing the support member 22 also has a second reinforcing rib 2156. The second reinforcing rib 2156 is close to the snap-fit ​​structure 2152. Therefore, by setting the second reinforcing rib 2156, the connection strength of the snap-fit ​​structure 2152 on the first shell 215 can be effectively improved, so that the snap-fit ​​structure 2152 can be more stably snapped with the laser host.

[0083] In addition, the second reinforcing rib 2156 is located inside the anti-slip part 213. Therefore, during the insertion and removal operation of the connector 20, the mutual abutment between the second reinforcing rib 2156, the first shell 215, and the support member 22 can prevent the first shell 215 from squeezing the first segment 13, thereby reducing the risk of the first segment 13 being squeezed and breaking.

[0084] In one embodiment of this application, the connection point between the first optical fiber 11 and the multiple second optical fibers 12 may also be located between the connector 20 and the handle 30. Therefore, the portion of the optical fiber unit 10 within the connector 20 is entirely composed of the first optical fiber 11. The portion of the optical fiber unit 10 between the connector 20 and the handle 30 includes a portion of the first optical fiber 11 and a portion of the second optical fibers 12. Thus, the optical fiber unit 10 between the connector 20 and the handle 30 has a larger bending radius compared to the prior art where this portion is only the first optical fiber 11, and can also meet the needs of surgical operators for more convenient bending.

[0085] In the embodiments of this application, please refer to Figure 1 As shown, the fiber optic conduit 100 further includes a first connecting tube 50, a second connecting tube 60, and a guide wire 40. The first connecting tube 50 is connected between the connector 20 and the handle 30. The second connecting tube 60 is connected to the end of the handle 30 away from the first connecting tube 50. The fiber optic unit 10 is sequentially passed through the connector 20, the first connecting tube 50, the handle 30, and the second connecting tube 60. The guide wire 40 is passed through the handle 30 and the second connecting tube 60 to guide the second connecting tube 60 and the multiple second optical fibers 12 passing through the second connecting tube 60 to the lesion location.

[0086] On the other hand, please see Figure 1-11 As shown, this application also provides a laser ablation device, which includes the fiber optic conduit 100 described in any of the above claims. Therefore, the laser ablation device possesses all the aforementioned beneficial effects, which will not be repeated here.

[0087] Furthermore, the laser ablation device also includes a main unit. The laser main unit is connected to the fiber optic conduit 100, and includes a laser module and a control module. The control module controls the laser module to output a laser beam to the fiber optic conduit 100, so that the output laser beam is transmitted via the first fiber 11 to each of the second fibers 12, and then output via the second fibers 12 to act on the patient's lesion.

[0088] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0089] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0090] The above are merely preferred embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An optical fiber duct, characterized in that, include: An optical fiber unit, comprising a first optical fiber and multiple second optical fibers, wherein the multiple second optical fibers are respectively connected to the same end of the first optical fiber, and the core diameter of the first optical fiber is larger than the core diameter of any of the second optical fibers. A connector for coupling one end of the first optical fiber away from the plurality of second optical fibers to a laser host; and A handle, which is fitted onto a plurality of second optical fibers and spaced apart from the connector.

2. The optical fiber conduit according to claim 1, characterized in that, The optical fiber unit includes a first segment, a second segment, a third segment, and a fourth segment arranged sequentially. The first segment is located inside the connector, the second segment is located between the connector and the handle, the third segment is located inside the handle, and the fourth segment is located outside the handle and away from the connector. The first segment includes the first optical fiber and multiple second optical fibers connected to the first optical fiber, and the second segment, the third segment and the fourth segment each include multiple second optical fibers.

3. The optical fiber conduit according to claim 2, characterized in that, The connector includes a housing and a support member. The support member passes through the housing and has a support groove. The first section is disposed in the support groove, and the connection point between the first optical fiber and multiple second optical fibers does not contact the housing.

4. The optical fiber conduit according to claim 3, characterized in that, The housing includes a first end and a second end opposite to each other. The support extends out of the housing at the first end to form a plug-in portion. The end of the first optical fiber away from the plurality of second optical fibers extends into the plug-in portion. The connection point of the first optical fiber and the plurality of second optical fibers is close to the second end. The outer side of the shell has an anti-slip portion, which is located near the first end.

5. The optical fiber conduit according to claim 4, characterized in that, The housing includes a first housing and a second housing, the support member is disposed on the second housing, and the opening of the support groove faces the first housing; The first shell has a first reinforcing rib on its inner surface facing the support member. The first reinforcing rib is close to the connection point between the first optical fiber and the multiple second optical fibers, but does not contact the connection point between the first optical fiber and the multiple second optical fibers.

6. The optical fiber conduit according to claim 5, characterized in that, The connector further includes a first sleeve, a fixing plate, and a fixing member. The first sleeve is sleeved on multiple second optical fibers and is close to the connection between the first optical fiber and the multiple second optical fibers. The first sleeve extends outward from the second end to form the support groove. The fixing plate limits the first sleeve within the support groove through the fixing member.

7. The optical fiber conduit according to claim 6, characterized in that, The connector also includes a second sleeve, which is sleeved on multiple second optical fibers and is limited at the second end of the housing by the first housing and the second housing. The second sleeve is at least partially fitted onto the first sleeve and extends out of the housing at the second end.

8. The optical fiber conduit according to claim 5, characterized in that, The first shell is constructed to form a snap-fit ​​structure, which extends from the first end in a direction away from the second end, and the snap-fit ​​structure includes an elastic arm, a snap-fit ​​portion and a pressing portion. The snap-fit ​​portion is connected to the elastic arm and away from the second end, and the pressing portion is connected to the side of the elastic arm away from the second shell and close to the first end. The first shell has a second reinforcing rib on its inner surface facing the support member, and the second reinforcing rib is close to the snap-fit ​​structure.

9. The optical fiber conduit according to claim 1, characterized in that, The connection point between the first optical fiber and the multiple second optical fibers is located between the connector and the handle.

10. The optical fiber conduit according to claim 1, characterized in that, The optical fiber conduit further includes a first connecting tube, a second connecting tube, and a guide wire. The first connecting tube is connected between the connector and the handle. The second connecting tube is connected to the end of the handle away from the first connecting tube. The guide wire passes through the handle and the second connecting tube. The optical fiber unit is sequentially inserted through the connector, the first connecting tube, the handle, and the second connecting tube.

11. The optical fiber conduit according to claim 1, characterized in that, The optical fiber unit also includes a glass tube, in which all the second optical fibers are sleeved and fused with the first optical fibers to form the optical fiber unit.

12. The optical fiber conduit according to claim 1, characterized in that, The optical fiber unit also includes a glass tube, in which all the second optical fibers are sleeved and tapered synchronously with the glass tube and then fused with the first optical fibers to form the optical fiber unit.

13. A laser ablation device, characterized in that, The laser ablation device includes the fiber optic conduit as described in any one of claims 1-12; and A laser host is connected to the fiber optic conduit, and the laser host includes a laser module and a control module. The control module is used to control the laser module to output a laser beam to the fiber optic conduit.

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